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Sample records for subfam maloideae rosaceae

  1. Phylogenetic and phytogeographical relationships in Maloideae (Rosaceae) based on morphological and anatomical characters

    NARCIS (Netherlands)

    Aldasoro, J.J.; Aedo, C.; Navarro, C.

    2005-01-01

    Phylogenetic relationships among 24 genera of Rosaceae subfam. Maloideae and Spiraeoideae are explored by means of a cladistic analysis; 16 morphological and anatomical characters were included in the analysis. Published suprageneric classifications and characters used in these classifications are

  2. The Malesian species of the subfamily Maloideae (Rosaceae)

    NARCIS (Netherlands)

    Kalkman, C.

    1973-01-01

    Taxonomic revision, precursory to the treatment of the Rosaceae in Flora Malesiana. Generic limits in tribus Sorbeae are discussed, Stranvaesia is included in Photinia (5 spp. in Malesia), Micromeles (1 sp. in Malesia) is treated as generically different from Sorbus. Apart from these, there are in

  3. Intergeneric hybrids in Rosaceae subtribe Pyrinae (formerly subfamily Maloideae) at USDA genebank

    Science.gov (United States)

    The USDA Agricultural Research Service maintains clonal germplasm collections representing world diversity of Pyrus, Cydonia and Mespilus at its National Clonal Germplasm Repository in Corvallis, Oregon, USA. Smaller collections of Amelanchier, Aronia, Crataegus, Sorbus and other genera in Rosaceae ...

  4. [Rosacea].

    Science.gov (United States)

    Barco, D; Alomar, A

    2008-05-01

    Rosacea is a chronic inflammatory skin disease appearing in the central area of the face of middle-aged patients. It is characterized by flushing, permanent erythema, telangiectasia, papules, pustules, and the absence of comedones. Its underlying pathophysiological mechanisms are not completely understood, although a number of hypotheses point to vascular abnormalities and infection by microorganisms such as Demodex folliculorum. Rosacea is classified into 4 subtypes, which determine the therapeutic approach based on skin care, topical antiinflammatory agents, topical and oral antibiotics and retinoids, and, in some instances, light-based therapy and surgery.

  5. Rosacea

    Science.gov (United States)

    ... hair and blue eyes. From Celtic or Scandinavian ancestry. Likely to have someone in their family tree with rosacea or severe acne. Likely to have had lots of acne — or acne cysts and/or nodules. Women are a bit more likely than men to ...

  6. Rosacea

    Directory of Open Access Journals (Sweden)

    Ewa Robak

    2010-09-01

    Full Text Available Rosacea is a chronic, inflammatory disease of the skin, usually localized on the face. The disease predominantly affects inhabitants of Northern and Western Europe and North America and is rarely found among other ethnic groups. The disease usually starts at the age of 20–30, with visible progression in the next decade of life and full clinical presentation at the age of 40–50. The pathogenesis of rosacea is heterogenic and not fully elucidated. The disease is associated with many different factors. The pathomechanism of the disease is complex and depends on: natural immunity, vascular disturbances, action of reactive oxygen species and proteolytic enzymes, UV radiation and infectious factors. The influence of environmental factors on natural, innate immunity can be responsible for different symptoms of the disease and can determine a type of treatment. At present rosacea is divided into 4 subtypes based on a type of clinical manifestiations: erythematotelangiectatic, papulopustular, phymatous and ocular rosacea. The course of the disease is characterized by remissions and progressions. In most cases it is sufficient to use a topical, but sometimes even a systemic treatment. Every relapse to the disesae is connected with progression of skin damage and aggravation of symptoms. Different topical and systemic ways of treatment are used but some of them are not accepted by FDA as a standard therapy of the disease. Except of the treatment also a proper care and life style are also important to control the disease. In the review the contemporary opinions on pathogenesis, clinical manifestations and therapeutic strategies were presented.

  7. [Rosacea].

    Science.gov (United States)

    Grosshans, E

    1988-12-17

    Rosacea should no longer be considered a follicular skin disease. It is a vascular disease of the face characterized by a significant evolution towards local complications such as telangiectasias, papular and aseptic pustular lesions, lupoid granulomas, chronic facial oedema and seboglandular hyperplasia. The basic abnormality seems to be a microcirculatory disturbance of the function of the facial angular veins directly involved in the brain-cooling vascular mechanism. The first clinic hallmark of this dysfunction is the occurrence of flushing, which may be spontaneous or induced by alcohol, intake of hot food, emotional stress and sudden variations in temperature. Tetracycline, metronidazole and isotretinoin are very useful for therapy but they only influence the cutaneous and ocular complications and do not act upon the basic vascular trouble. Current therapeutic research is directed towards drugs having an alpha-sympathomimetic activity and inhibiting the endogenous opioid mediators of flushing such as naloxone or clonidine.

  8. Managing Rosacea

    Science.gov (United States)

    ... of Rosacea Management Options for Rosacea Rosacea Treatment Algorithms Grading System for Rosacea Glossary How to ... patient guide for controlling this chronic and often complex disorder Introduction Rosacea at a Glance What to Tell Your ...

  9. Rosacea (image)

    Science.gov (United States)

    Rosacea is a condition where the area of the cheeks, nose, chin, forehead, or eyelids become inflamed. ... vessels, swelling, or skin eruptions similar to acne. Rosacea occurs most often in fair skinned people, particularly ...

  10. Pediatric rosacea.

    Science.gov (United States)

    Kellen, Roselyn; Silverberg, Nanette B

    2016-07-01

    Because rosacea is uncommon in the pediatric population, care must be taken to exclude other papulopustular disorders. Children can present with vascular, papulopustular, and/or ocular findings. Importantly, ocular symptoms can appear before the cutaneous symptoms of rosacea, leading to misdiagnosis. Rosacea is a clinical diagnosis, but histopathologic examination typically reveals dilated vessels, perivascular lymphohistiocytic infiltrates in the upper dermis, elastosis, and disorganization of the upper dermal connective tissue. Treatment involves avoiding known triggers and utilizing topical and/or systemic therapies. Although treatment can control flares, pediatric rosacea often persists into adulthood.

  11. Ocular Rosacea

    Science.gov (United States)

    ... default.asp. Accessed March 31, 2015. Bron A. Ocular rosacea. http://www.uptodate.com. Accessed March 31, 2015. Riordan-Eva P, et al. Conjunctiva and tears. In: Vaughan & Asbury's General Ophthalmology. 18th ed. New ...

  12. Ocular rosacea

    Directory of Open Access Journals (Sweden)

    Đaković Zorana

    2004-01-01

    Full Text Available Five cases of ocular rosacea (one male and four females are reported in this paper. Two of the patients were with keratoconjunctivitis sicca, one with conjunctivitis chronica and blepharitis, one with conjunctivitis chronica and meibomitis, and one with reccurent corneal erosions with meibomitis and chordeloum. In four patients ocular symptoms preceded the occurence of skin lesions. The treatment with oral tetracyclines significantly improved the state of ocular rosacea in four patients, while in one case the changes of the anterior eye segment progressed in more severe state of ulcerative keratitis. It is considered that in almost 20% of the patients with rosacea ocular lesions may precede the skin changes, representing a diagnostic problem. Thus, in those cases multidisciplinary approach is suggested. Such approach is particularly important because of the decrease of morbidity and the prevention of the onset of the eye complications such as drastic worsening of visual acuity, i.e., the blindness.

  13. Rosacea Management

    Science.gov (United States)

    Abokwidir, Manal; Feldman, Steven R.

    2016-01-01

    Background Rosacea is a chronic inflammatory skin condition associated with four distinct subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular. Purpose To review the different kinds of management for all subtypes. Methods We divided rosacea management into three main categories: patient education, skin care, and pharmacological/procedural interventions. Results Flushing is better prevented rather than treated, by avoiding specific triggers, decreasing transepidermal water loss by moisturizers, and blocking ultraviolet light. Nonselective β-blockers and α2-adrenergic agonists decrease erythema and flushing. The topical α-adrenergic receptor agonist brimonidine tartrate 0.5% reduces persistent facial erythema. Intradermal botulinum toxin injection is almost safe and effective for the erythema and flushing. Flashlamp-pumped dye, potassium-titanyl-phosphate and pulsed-dye laser, and intense pulsed light are used for telangiectasias. Metronidazole 1% and azelaic acid 15% cream reduce the severity of erythema. Both systemic and topical remedies treat papulopustules. Systemic remedies include metronidazole, doxycycline, minocycline, clarithromycin and isotretinoin, while topical remedies are based on metronidazole 0.75%, azelaic acid 15 or 20%, sodium sulfacetamide, ivermectin 1%, permethrin 5%, and retinoid. Ocular involvement can be treated with oral or topical antibacterial. Rhinophyma can be corrected by dermatosurgical procedures, decortication, and various types of lasers. Conclusion There are many options for rosacea management. Patients may have multiple subtypes, and each phase has its own treatment. PMID:27843919

  14. Rosacea Management.

    Science.gov (United States)

    Abokwidir, Manal; Feldman, Steven R

    2016-09-01

    Rosacea is a chronic inflammatory skin condition associated with four distinct subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular. To review the different kinds of management for all subtypes. We divided rosacea management into three main categories: patient education, skin care, and pharmacological/procedural interventions. Flushing is better prevented rather than treated, by avoiding specific triggers, decreasing transepidermal water loss by moisturizers, and blocking ultraviolet light. Nonselective β-blockers and α2-adrenergic agonists decrease erythema and flushing. The topical α-adrenergic receptor agonist brimonidine tartrate 0.5% reduces persistent facial erythema. Intradermal botulinum toxin injection is almost safe and effective for the erythema and flushing. Flashlamp-pumped dye, potassium-titanyl-phosphate and pulsed-dye laser, and intense pulsed light are used for telangiectasias. Metronidazole 1% and azelaic acid 15% cream reduce the severity of erythema. Both systemic and topical remedies treat papulopustules. Systemic remedies include metronidazole, doxycycline, minocycline, clarithromycin and isotretinoin, while topical remedies are based on metronidazole 0.75%, azelaic acid 15 or 20%, sodium sulfacetamide, ivermectin 1%, permethrin 5%, and retinoid. Ocular involvement can be treated with oral or topical antibacterial. Rhinophyma can be corrected by dermatosurgical procedures, decortication, and various types of lasers. There are many options for rosacea management. Patients may have multiple subtypes, and each phase has its own treatment.

  15. Coping with Rosacea: Managing Psychosocial Aspects of Rosacea

    Science.gov (United States)

    ... form Search You are here Home Coping With Rosacea Managing Psychosocial Aspects of Rosacea The conspicuous redness, blemishes and swelling caused by ... constructive opportunities to create understanding. top Living With Rosacea Millions of people suffer from rosacea, yet increasing ...

  16. Rosacea and rhinophyma.

    Science.gov (United States)

    Tüzün, Yalçın; Wolf, Ronni; Kutlubay, Zekayi; Karakuş, Ozge; Engin, Burhan

    2014-01-01

    Rosacea is a common and chronic inflammatory cutaneous disease with unknown etiology. The pathophysiology of rosacea is still poorly understood. Epidemiological studies indicate a genetic component, but a rosacea gene has not been detected yet. Recent molecular studies propose that an altered innate immune response is involved in the pathogenesis of the rosacea disease. Signs of rosacea are indicated by the presence of characteristic facial or ocular inflammation involving both the vascular and tissue stroma. A wide range of drug options is available for the treatment of rosacea, including several topical ones (metronidazole, antibiotics, azelaic acid, benzoyl peroxide, sulfacetamide/sulfur, retinoids) and oral ones (mainly tetracyclines, metronidazole, macrolides, isotretinoin). This review highlights the recent clinical and pathophysiological developments concerning rosacea. © 2013 Elsevier Inc. All rights reserved.

  17. Rosacea and gastrointestinal disorders

    DEFF Research Database (Denmark)

    Egeberg, A; Weinstock, L B; Thyssen, E P

    2017-01-01

    BACKGROUND: Rosacea is a common inflammatory facial skin condition. Recent genetic and epidemiological studies have suggested pathogenic links between rosacea and gastrointestinal disorders, but data are limited. OBJECTIVES: The objective was to investigate the association between rosacea...... and coeliac disease (CeD), Crohn disease (CD), ulcerative colitis (UC), Helicobacter pylori infection (HPI), small intestinal bacterial overgrowth (SIBO) and irritable bowel syndrome (IBS), respectively. METHODS: We performed a nationwide cohort study. A total of 49 475 patients with rosacea and 4 312 213...... with rosacea. RESULTS: The prevalence of CeD, CD, UC, HPI, SIBO and IBS, respectively, was higher among patients with rosacea when compared with the control subjects. Adjusted HRs revealed significant associations between rosacea and CeD (HR 1·46, 1·11-1·93), CD (HR 1·45, 1·19-1·77), UC (HR 1·19, 1...

  18. Topical therapies for rosacea.

    Science.gov (United States)

    Nally, Jennie B; Berson, Diane S

    2006-01-01

    Therapeutic options for rosacea include topical agents, oral therapies, laser and light treatments, and surgical procedures. Topical therapies play a critical role in the treatment of patients with papulopustular rosacea and erythematotelangiectatic rosacea, and have the ability to effectively minimize certain manifestations of the disease, including papules, pustules, and erythema. The 3 primary agents for the topical treatment of rosacea are metronidazole, azelaic acid, and sodium sulfacetamide-sulfur. Each of these therapies is approved for the treatment of rosacea and has been validated by multiple studies. Additional topical therapies including benzoyl peroxide, clindamycin, retinoids, topical steroids, calcineurin inhibitors, and permethrin are not approved for the treatment of rosacea and play variable roles in the management of this condition.

  19. Ocular rosacea: a review

    Directory of Open Access Journals (Sweden)

    Ana Carolina Cabreira Vieira

    2012-10-01

    Full Text Available Rosacea is a prevalent chronic cutaneous disorder with variable presentation and severity. Although considered a skin disease, rosacea may evolve the eyes in 58-72% of the patients, causing eyelid and ocular surface inflammation. About one third of the patients develop potentially sight-threatening corneal involvement. Untreated rosacea may cause varying degrees of ocular morbidity. The importance of early diagnosis and adequate treatment cannot be overemphasized. There is not yet a diagnostic test for rosacea. The diagnosis of ocular rosacea relies on observation of clinical features, which can be challenging in up to 90% of patients in whom accompanying roseatic skin changes may be subtle or inexistent. In this review, we describe the pathophysiologic mechanisms proposed in the literature, clinical features, diagnosis and management of ocular rosacea, as well as discuss the need for a diagnostic test for the disease.

  20. A revision of Tecophilaeaceae subfam. Tecophilaeoideae in Africa

    Directory of Open Access Journals (Sweden)

    J. C. Manning

    2012-12-01

    Full Text Available Family Tecophilaeaceae subfam. Tecophilaeoideae is revised for the Flora of southern Africa region, with the inclusion of the tropical Walleria mackenzii J.Kirk for completeness. The genera Cyanella Royen ex L. (9 spp., Eremiolirion J.C.Manning & F.Forest (1 sp. and Walleria J.Kirk (3 spp. are treated, with keys to the genera, species and subspecies; and full descriptions and distribution maps. A formal infrageneric classification is proposed for Cyanella, in which sect. Trigella (Salisb. Pax & K.Hoffm. is revived for the species with a 3 + 3 arrangement of stamens. The new species, C. marlothii J.C.Manning & Goldblatt, is described from the Richtersveld; and C. pentheri Zahlbr. is resuscitated from the synonomy of C. hyacinthioides Royen ex L. Pink-flowered plants of normally yellow-flowered C. lutea have a separate geographical distribution and are recognized as subsp. rosea (Eckl. ex Baker J.C.Manning & Goldblatt.

  1. [Rosacea: what's new?].

    Science.gov (United States)

    Czernielewski, Justine; Conrad, Curdin

    2016-03-30

    Rosacea is a common chronic inflammatory skin disease with a variety of clinical manifestations such as centro-facial erythema, papules and pustules, as well as ocular involvement. Based on these manifestations, rosacea is clinically divided into four subtypes necessitating distinct therapies. Despite recent scientific advances, the pathomechanisms underlying rosacea in general and the different subtypes in particular are still elusive. Accordingly, current treatment options remain mostly broad and symptomatic. In this review we discuss the clinic of rosacea, its impact on the patient, and the pathophysiological mechanisms involved, describe treatment options and highlight differential diagnoses relevant for treating physicians.

  2. Seborrheic Dermatitis and Rosacea

    Science.gov (United States)

    ... Moisturizer Makeup Tips Men's Shaving Tips Causes of Rosacea Introduction Innate Immune System Neurovascular System Vascular Changes Demodex & Microbes Bibliography Genetics The Ecology of Your Face ...

  3. Pharmacologic treatments for rosacea.

    Science.gov (United States)

    Layton, Alison M

    Rosacea represents a common and chronic inflammatory skin disorder. Clinical features include transient and permanent erythema, inflammatory papules and pustules, phymatous changes, and ocular signs and symptoms. Rosacea is generally classified into four subtypes and one variant. Subtype 1, erythematotelangiectatic rosacea, includes clinical features of flushing and persistent central facial erythema with or without telangiectasia. Subtype 2, papulopustular rosacea, is characterized by persistent central facial erythema with transient papules or pustules or both on the central face. Subtype 3, phymatous rosacea, includes thickening of the skin with irregular surface nodularities and enlargement. Subtype 4, ocular rosacea, includes inflammation of different parts of the eye and eyelid. A variant, granulomatous rosacea, is noninflammatory and is characterized by hard, brown, yellow, or red cutaneous papules or nodules of uniform size. Patients may present with more than one subtype, and each individual characteristic may fluctuate. There is debate whether rosacea progresses from one subtype over time or subtypes represent discreet entities. Defining clinical presentation and improved understanding of pathophysiology has resulted in identification of novel treatment approaches. This contribution outlines a rationale for treatment, highlights an evidence-based approach with approved treatments, and considers novel developments and off-license therapy available. Crown Copyright © 2016. Published by Elsevier Inc. All rights reserved.

  4. National Rosacea Society

    Science.gov (United States)

    ... according to a new study published in the Journal of the American Academy of Dermatology . Read More » Study Investigates Rosacea's Prevalence in Black ... pathophysiology of rosacea has been published in the Journal of the American Academy of Dermatology . Read More » Make Your Opinion Count Take the ...

  5. Fitohemijska karakterizacija i biohemijska ispitivanja plodova vrsta roda Sorbus L. 1753 (Rosaceae, Maloideae) kao izvora prirodnih nutraceutika

    OpenAIRE

    Mrkonjić, Zorica

    2017-01-01

       Cilj ove doktorske disertacije predstavljao je ispitivanje fitohemijskog sastava i biološke aktivnosti vodenih i metanolnih ekstrakata svežih i suvih plodova, kao  i pekmeza  pripremljenog  po tradicionalnoj recepturi od plodova  četiri (od kojih se jedna javlja u dve forme)  samonike  vrsta  roda  Sorbus  L.:  S. aucuparia, S. domestica, S. torminalis  f.  torminalis, S. torminalis  f. semitorminalis  i...

  6. Rosacea - the ophthalmic perspective.

    Science.gov (United States)

    Awais, Muhammad; Anwar, Muhammad Irfan; Iftikhar, Raheel; Iqbal, Zohaib; Shehzad, Nazia; Akbar, Bushra

    2015-01-01

    Rosacea is a chronic cutaneous inflammatory disorder with variable presentations. Although primarily considered a skin disease, rosacea may involve the eyes in a significant number of patients leading to ocular complications. It has been recognized that many patients of ocular rosacea in dermatological outpatient department (OPD) go unnoticed as the physicians don't ask about eye symptoms. Same holds true in ophthalmic OPD's where the doctors usually don't consider this diagnosis. The diagnosis of ocular rosacea primarily relies on observation of ophthalmic clinical features but it can be easily missed if accompanying cutaneous features are subtle or inconsistent. The subject diagnosis if not diagnosed and treated promptly, may cause varying degrees of ocular morbidity and may impair vision secondary to corneal involvement. To review published literature and provide an overview on different pathophysiologic mechanisms of ocular rosacea and clinical features required for its diagnosis. As well as to highlight various treatment modalities available for ocular rosacea. In our study Medline and Google Scholar were the key search engines to find literature using keywords like epidemiology, pathogenesis, clinical features, management and complications of ocular rosacea.

  7. The pathophysiology of rosacea.

    Science.gov (United States)

    Mc Aleer, M A; Lacey, N; Powell, F C

    2009-12-01

    Rosacea is thought to be a common skin disorder in the general population, presenting with many different clinical features and unknown causes. Theories of pathogenesis have been extrapolated from clinical observation of factors, leading to a definition of the etiology of rosacea which was very limited until recently. A recent upsurge in translational research in rosacea has significantly advanced the insight into this disease. In this review the authors discuss the pathogenesis of this disease, which could be determined by the following factors: 1) exposure to UV radiation; 2) reactive oxygen species (including superoxide and hydroxyl radicals, hydrogen peroxide and singlet oxygen); 3) vascular hyperreactivity; 4) neuropeptides; 5) exacerbation of innate immune response; 6) microbes, in particular H. pylori and environmental aggressors, such as Demodex mite. Even if the recent investigations have significantly improved the understanding of its pathogenesis, the authors conclude that the histopathology of rosacea remains to be clarified according to subtype and age of development of individual lesions.

  8. Rosacea: Diagnosis and Treatment.

    Science.gov (United States)

    Oge', Linda K; Muncie, Herbert L; Phillips-Savoy, Amanda R

    2015-08-01

    Rosacea is a chronic facial skin condition of unknown cause. It is characterized by marked involvement of the central face with transient or persistent erythema, telangiectasia, inflammatory papules and pustules, or hyperplasia of the connective tissue. Transient erythema, or flushing, is often accompanied by a feeling of warmth. It usually lasts for less than five minutes and may spread to the neck and chest. Less common findings include erythematous plaques, scaling, edema, phymatous changes (thickening of skin due to hyperplasia of sebaceous glands), and ocular symptoms. The National Rosacea Society Expert Committee defines four subtypes of rosacea (erythematotelangiectatic, papulopustular, phymatous, and ocular) and one variant (granulomatous). Treatment starts with avoidance of triggers and use of mild cleansing agents and moisturizing regimens, as well as photoprotection with wide-brimmed hats and broad-spectrum sunscreens (minimum sun protection factor of 30). For inflammatory lesions and erythema, the recommended initial treatments are topical metronidazole or azelaic acid. Once-daily brimonidine, a topical alpha-adrenergic receptor agonist, is effective in reducing erythema. Papulopustular rosacea can be treated with systemic therapy including tetracyclines, most commonly subantimicrobial-dose doxycycline. Phymatous rosacea is treated primarily with laser or light-based therapies. Ocular rosacea is managed with lid hygiene, topical cyclosporine, and topical or systemic antibiotics.

  9. Severe rosacea: A case report

    Directory of Open Access Journals (Sweden)

    Ebrahim Shirzadeh

    2017-01-01

    Conclusion: Rosacea can be extremely severe and disfiguring, and it can be misdiagnosed as the pathognomonic butterfly rash of LE. Demodex carriage in rosacea is consistent and may play a significant role in the severe forms.

  10. Rosacea with extensive extrafacial lesions

    OpenAIRE

    Pereira, TM; Vieira, AP; Sousa-Basto, A

    2008-01-01

    Rosacea is a very common skin disorder in the clinical practice that primarily affects the convex areas of the face. Extrafacial rosacea lesions have occasionally been described, but extensive involvement is exceptional. In the absence of its typical clinical or histological features, the diagnosis of extrafacial rosacea may be problematic. We describe an unusual case of rosacea with very exuberant extrafacial lesions, when compared with the limited involvement of the face.

  11. [Physiopathology of rosacea].

    Science.gov (United States)

    Cribier, B

    2014-09-01

    For a long time rosacea was thought to be mainly a vascular disorder. In the past ten years many other concepts have emerged, such as the neurovascular aspects and involvement of innate immunity. There is obviously a genetic part in rosacea, as it is much more common in people with fair skin, blue eyes and Celtic ascendance. The same persons are submitted to continental weather, with major temperature seasonal variations. Erythema and telangiectasia result from dilated superficial capillaries that have bizarre shapes, and induce constant edema of the dermis. This might be a favouring factor for Demodex colonization, which plays a major role in rosacea. Inflammation is always present, even in erythematotelangiectatic subtypes. It involves innate immunity, in response to environmental factors, like Demodex and its own biotope, resulting in overproduction of LL37, a pro-inflammatory peptide able to induce skin inflammation in an animal model, trough activation of inflammatory cells. Tool like receptors are involved in the activation of innate immunity. Demodex is the cause of ganulomas seen in papulopustular rosacea, but it is also always present in the erythematotelangiectatic subtypoe. Colonization by Demodex is nevertheless not decreased with conventional treatments of rosacea, like tetracyclins and metronizaole. This might be due to induction of inflamation by bacteria hosted by Demodex, like Bacillus oleronius, and dozens of bacteria that are being investigated. Finaly, rhinophyma is linked to both vascular changes and activation of fibrosis, involving TGF beta. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  12. [Treatment of rosacea].

    Science.gov (United States)

    Parodi, A; Drago, F; Paolino, S; Cozzani, E; Gallo, R

    2011-09-01

    A range of treatment options are available in rosacea, which include several topical (mainly metronidazole, azelaic acid, other antibiotics, sulfur, retinoids) and oral drugs (mainly tetracyclines, metronidazole, macrolides). In some cases, the first choice is a systemic therapy because patients may have sensitive skin and topical medications can be irritant. Isotretinoin can be used in resistant cases of rosacea. Unfortunately, the majority of studies on rosacea treatments are at high or unclear risk of bias. A recent Cochrane review found that only topical metronidazole, azelaic acid, and oral doxycycline (40 mg) had some evidence to support their effectiveness in moderate to severe rosacea and concluded that further well-designed, adequately-powered randomised controlled trials are required. In our practice, we evaluate our patients for the presence of two possible triggers, Helicobacter pylori infection and small intestinal bacterial overgrowth. When they are present we use adapted antibiotic protocols. If not, we use oral metronidazole or oral tetracycline to treat papulopustolar rosacea. We also look for Demodex folliculorum infestation. When Demodex concentration is higher than 5/cm(2) we use topical crotamiton 10% or metronidazole. Copyright © 2011 Elsevier Masson SAS. All rights reserved.

  13. Treatment of rosacea.

    Science.gov (United States)

    Parodi, A; Drago, F; Paolino, S; Cozzani, E; Gallo, R

    2011-11-01

    A range of treatment options are available in rosacea, which include several topical (mainly metronidazole, azelaic acid, other antibiotics, sulfur, retinoids) and oral drugs (mainly tetracyclines, metronidazole, macrolides). In some cases, the first choice is a systemic therapy because patients may have sensitive skin and topical medications can be irritant. Isotretinoin can be used in resistant cases of rosacea. Unfortunately, the majority of studies on rosacea treatments are at high or unclear risk of bias. A recent Cochrane review found that only topical metronidazole, azelaic acid, and oral doxycycline (40 mg) had some evidence to support their effectiveness in moderate to severe rosacea and concluded that further well-designed, adequately-powered randomised controlled trials are required. In our practice, we evaluate our patients for the presence of two possible triggers, Helicobacter pylori infection and small intestinal bacterial overgrowth. When they are present we use adapted antibiotic protocols. If not, we use oral metronidazole or oral tetracycline to treat papulopustolar rosacea. We also look for Demodex folliculorum infestation. When Demodex concentration is higher than 5/cm(2) we use topical crotamiton 10% or metronidazole. Copyright © 2011 Elsevier Masson SAS. All rights reserved.

  14. Rosacea and the pilosebaceous follicle.

    Science.gov (United States)

    Powell, Frank C

    2004-09-01

    The pathophysiology of rosacea remains unknown. A leading theory suggests a vascular basis; however, clinical observations and histopathologic studies suggest that inflammation of the pilosebaceous follicle may be central to the pathogenesis of rosacea. Demodex folliculorum is a frequently seen commensal in the follicles of facial skin. According to evidence from biopsies of the skin surface, individuals with rosacea have a higher density of this parasite. This increased mite density may play a role in the pathophysiology of rosacea by triggering inflammatory or specific immune reactions, mechanically blocking the follicles, or acting as a vector for bacteria. Ongoing research has shown that bacteria from patients with rosacea may behave differently at the higher skin temperature that may be present in patients with rosacea. Another group has isolated bacteria from the Demodex mites; these bacteria may play a pathogenic role in papulopustular rosacea by facilitating follicular-based inflammatory changes.

  15. Rosacea: a Clinical Review

    Science.gov (United States)

    Mikkelsen, Carsten Sauer; Holmgren, Helene Ringe; Kjellman, Petra; Heidenheim, Michael; Kappinnen, Ari; Bjerring, Peter; Huldt-Nystrøm, Theis

    2016-01-01

    Rosacea is a field within dermatology with new insight within immunological research and new treatment-algorithm. Patient education on rosacea and appropriate treatments is an important aspect in helping patients succeed with therapy. Treatment should be tailored to each individual patient, taking into account: symptoms, trigger factors, patients’ wishes, most bothersome symptoms, psychological aspect, individual needs. A combination of clinical therapies to treat different symptoms concomitantly may offer the best possible outcomes for the patient. In this review article we describe these aspects. PMID:27942368

  16. Rosacea: a clinical review

    Directory of Open Access Journals (Sweden)

    Carsten Sauer Mikkelsen

    2016-06-01

    Full Text Available Rosacea is a field within dermatology with new insight within immunological research and new treatment-algorithm. Patient education on rosacea and appropriate treatments is an important aspect in helping patients succeed with therapy. Treatment should be tailored to each individual patient, taking into account: symptoms, trigger factors, patients’ wishes, most bothersome symptoms, psychological aspect, individual needs. A combination of clinical therapies to treat different symptoms concomitantly may offer the best possible outcomes for the patient. In this review article we describe these aspects.

  17. [Signs and symptoms of rosacea].

    Science.gov (United States)

    Schmutz, J-L

    2014-09-01

    Rosacea is a chronic inflammatory dermatosis characterized by outbreaks of exacerbation and remission. The diagnosis of rosacea based on specific clinical criteria, mainly centrofacial erythema occurring between 30 and 50 years. The disease predominates in women, in light phototype, especially from Northern Europe. Several classifications of the disease exist. In France, Edouard Grosshans described four stages. Stage I is that of flushing, stage II is that of erythrocouperosis, stage III papules and pustules and stage IV rhinophyma. German schools described only 3 stages, like experts from the National Rosacea Society (NRS), who described four subtypes: • 1. erythematotelangiectatic rosacea; • 2. papulopustular rosacea; • 3. phymas; • 4. ocular rosacea. The patient can enter the disease at any stage. CLINICAL ASPECTS OF ROSACEA: Stage I (flushes) sometimes starts very early at the age of 20 years by the occurrence of paroxysmal facial erythema that might be associated with conjunctival hyperemia. Flushes occur after meals, sudden change in temperature or absorption of alcohol or hot drinks. Stage II or erythrocouperosis comprises permanent facial erythema with telangiectasia. Stage III is the most characteric of the disease. On the erythematous background patient develop outbreak of papules and pustules. Stage IV is mainly observed in males and is characterized mainly by rhinophyma. There is no consensus regarding the description of the other variants. NRS describe a particular subtype, granulomatous or lupoid rosacea, characterized by yellowish or brownish papules of the cheeks and peri-orificial areas. Ocular rosacea is common and should be systematically looked for in all patients with rosacea. Steroid rosacea is a complication of topical corticosteroids use on the face. Fulminant rosacea occurs abruptly in young women, who develop papules, pustules and deep purulent sinuses. Treatment includes the combination of systemic corticosteroids and isotretinoin

  18. Interventions for rosacea

    NARCIS (Netherlands)

    van Zuuren, Esther J.; Fedorowicz, Zbys; Carter, Ben; van der Linden, Mireille M. D.; Charland, Lyn

    2015-01-01

    Rosacea is a common chronic skin condition affecting the face, characterised by flushing, redness, pimples, pustules and dilated blood vessels. The eyes are often involved and thickening of the skin with enlargement (phymas), especially of the nose, can occur in some people. A range of treatment

  19. Pathophysiology of rosacea: redness, telangiectasia, and rosacea.

    Science.gov (United States)

    Cribier, B

    2011-11-01

    The pathophysiology of rosacea involves a large number of factors that are at times difficult to correlate. There is not a single physiopathological model. Nevertheless, today it seems to have been established that two essential factors are involved: vascular and inflammatory. The disease occurs in individuals with a predisposition, mainly a light phototype subjected to substantial variations in climate. On a background of primary vascular anomaly, external factors (climate, exposure to ultraviolet rays, cutaneous flora, etc.) contribute to the development of abnormal superficial blood vessels, with a low permeability. The edema that results undoubtedly favors the colonization and multiplication of Demodex folliculorum. This parasite creates inflammation, directly and indirectly, which is seen in the papules and pustules as well as granulomas. Inflammation from rosacea is also characterized by innate immune system anomalies, with an increase in the expression of epidermal proteases and production of pro-inflammatory cathelicidin peptides. In addition, facial hypersensitivity exists, even though the cutaneous barrier is not altered. Finally, rhinophyma remains poorly explained; the vascular abnormalities induce local production of transforming growth factor β1 (TGF-β1) capable of creating fibrosis and therefore cutaneous thickening. Copyright © 2011 Elsevier Masson SAS. All rights reserved.

  20. [Physiopathology of rosacea. Redness, telangiectasia, and rosacea].

    Science.gov (United States)

    Cribier, B

    2011-09-01

    The physiopathology of rosacea involves a large number of factors that are at times difficult to correlate. There is not a single physiopathological model. Nevertheless, today it seems to have been established that two essential factors are involved: vascular and inflammatory. The disease occurs in individuals with a predisposition, mainly a light phototype subjected to substantial variations in climate. On a background of primary vascular anomaly, external factors (climate, exposure to ultraviolet rays, cutaneous flora, etc.) contribute to the development of abnormal superficial blood vessels, with a low permeability. The edema that results undoubtedly favors the colonization and multiplication of Demodex folliculorum. This parasite creates inflammation, directly and indirectly, which is seen in the papules and pustules as well as granulomas. Inflammation from rosacea is also characterized by innate immune system anomalies, with an increase in the expression of epidermal proteases and production of pro-inflammatory cathelicidin peptides. In addition, facial hypersensitivity exists, even though the cutaneous barrier is not altered. Finally, rhinophyma remains poorly explained; the vascular abnormalities induce local production of transforming growth factor β 1 (TGF-β1) capable of creating fibrosis and therefore cutaneous thickening. Copyright © 2011 Elsevier Masson SAS. All rights reserved.

  1. Association of rosacea with demodicosis.

    Science.gov (United States)

    Moravvej, Hamideh; Dehghan-Mangabadi, Mohammad; Abbasian, Mohammad-Reza; Meshkat-Razavi, Gita

    2007-04-01

    There are controversial reports about the role of Demodex mites in pathogenesis of acne rosacea. The aim of this study was to examine the relationship between the presence and number of Demodex mites and the pathogenesis of rosacea. In this case-control study, the prevalence of Demodex mites was studied in facial biopsy of 75 patients with acne rosacea as case group, and in 75 patients with discoid lupus erythematosus and 75 patients with actinic lichen planus as control groups. The prevalence of Demodex mites in patients with acne rosacea (38.6%) was significantly higher than the patients with discoid lupus erythematosus (21.3%) and actinic lichen planus patients (10.6%) (P Demodex mites may play a role in pathogenesis of rosacea but it is not clear whether rosacea merely provides a suitable environment for multiplication of mites, or whether the mites play a role in the pathological changes.

  2. Granulomatous rosacea: a case report.

    Science.gov (United States)

    Kelati, A; Mernissi, F Z

    2017-08-20

    Granulomatous rosacea is a rare chronic inflammatory skin disease with an unknown origin. The role of Demodex follicularum in its pathogenesis is currently proved. We report a case of a 54-year-old Moroccan man with a 3-month history of erythematous, nonpruritic papules on the lateral side around the eyes. Dermoscopy and histology confirmed the diagnosis of granulomatous rosacea. We describe another clinical presentation of granulomatous rosacea with a clinical-dermoscopic-pathological correlation.

  3. Molecular mechanisms of rosacea pathogenesis

    Directory of Open Access Journals (Sweden)

    Davydova A.M.

    2013-09-01

    Full Text Available The article presents possible molecular mechanisms for rosacea pathogenesis from current domestic and foreign clinical observations and laboratory research: regulation and expression defects of antimicrobial peptides, vascular endothelial growth factor, the effect of serine proteases, oxidative stress, reactive oxygen species and ferritin on the occurrence and course of rosacea. New developments in molecular biology and genetics are advanced for researching the interaction of multiple factors involved in rosacea pathogenesis, as well as providing the bases for potentially new therapies.

  4. Interventions for rosacea.

    Science.gov (United States)

    van Zuuren, Esther J; Kramer, Sharon; Carter, Ben; Graber, Mark A; Fedorowicz, Zbys

    2011-03-16

    Rosacea is a common chronic skin condition affecting the face, characterised by flushing, redness, pimples, pustules, and dilated blood vessels. The eyes are often involved and thickening of the skin with enlargement (phymas), especially of the nose, can occur in some patients. A range of treatment options are available but it is unclear which are the most effective. To assess the evidence for the efficacy and safety of treatments for rosacea. In February 2011 we updated our searches of the Cochrane Skin Group Specialised Register, the Cochrane Central Register of Controlled Trials (Clinical Trials) in The Cochrane Library, MEDLINE, EMBASE, Science Citation Index, and Ongoing Trials Registers. Randomised controlled trials in people with moderate to severe rosacea. Study selection, data extraction, assessment of risk of bias, and analyses were carried out by two independent review authors. Fifty-eight trials, including 27 from the original review, comprising 6633 participants were included in this updated review. Interventions included topical metronidazole, oral antibiotics, topical azelaic cream or gel, topical benzoyl peroxide and/or combined with topical antibiotics, sulphacetamide/sulphur, and others. Only two studies assessed our primary outcome 'quality of life'.Pooled data from physician assessments in three trials provided some evidence that metronidazole was more effective compared to placebo (RR 1.95, 95% CI 1.48 to 2.56). Three trials provided data, based on participants' assessments, illustrating azelaic acid was more effective than placebo (RR 1.52, 95% CI 1.32 to 1.76).Physician-based assessments in two trials indicated that doxycycline appeared to be significantly more effective than placebo (RR 1.59, 95% CI 1.02 to 2.47 and RR 2.37, 95% CI 1.12 to 4.99). There was no statistically significant difference in effectiveness between 100 mg and 40 mg doses of doxycycline, but there was evidence of less adverse effects with the lower dose (RR 0.25, 95% CI

  5. Epidemiology of rosacea in Colombia.

    Science.gov (United States)

    Rueda, Lili J; Motta, Adriana; Pabón, Juan G; Barona, Maria I; Meléndez, Esperanza; Orozco, Beatriz; Rojas, Ricardo F

    2017-05-01

    Prevalence of rosacea has been estimated around the world in the range of 0-22%. In Colombia, the prevalence of rosacea remains unknown. The aim of this study was to determine the prevalence of rosacea and the frequencies of its subtypes in Colombia. This cross-sectional, multicenter study was conducted in six outpatient dermatology clinics across Colombia. A total of 33 dermatologists conducted a comprehensive medical history and physical examination for all rosacea patients seen at their offices over the course of 2 months. All patients who accepted to participate were encouraged to answer a survey about the history of their illness. Of 10,204 outpatients evaluated for rosacea between July and August 2014, 291 rosacea patients were included in this study. The prevalence of rosacea subtypes in this cohort was: 45.3% erythematotelangiectatic (ETR) (n = 132), 48.7% papulopustular (PPR) (n = 142), 4.8% phymatous (n = 14), and 1% ocular (n = 3). Overall, the prevalence in Colombia was 2.85%. Our data represent an important first step to understanding the current state of rosacea in Colombia. The prevalence of rosacea in Colombia is the highest in Latin America among a few reports published, which might be explained by geographic features. However, contrary to our expectations, the prevalence is lower than that in some European countries. We postulate that this finding may be due to methodological differences. © 2017 The International Society of Dermatology.

  6. Granulomatous rosacea-like demodicidosis.

    Science.gov (United States)

    Lee, Julia Yu-Yun; Hsu, Chao-Kai

    2007-10-13

    Demodicidosis may present as pityriasis folliculitis, papulopustular lesions, rosacea-like eruptions, and granulomatous rosacea-like eruptions. We report a case of demodex granuloma presenting with recurrent granulomatous rosacea-like papules on the face in a middle-aged woman. The diagnosis of demodicidosis was made by finding extrafollicular mites in the perifollicular inflammatory infiltrate. The papules resolved after 3 weeks of systemic and topical metronidazole, and low-dose oral prednisolone therapy. In summary, demodex granuloma may be mistaken for granulomatous rosacea-like papules. Correct diagnosis can be facilitated by finding extrafollicular demodex mites in skin biopsy specimens.

  7. Risk factors associated with rosacea.

    Science.gov (United States)

    Abram, K; Silm, H; Maaroos, H-I; Oona, M

    2010-05-01

    Although rosacea is a common disease, the cause of disease is still a mystery -Helicobacter pylori infection, genetic predisposition, climatic factors, and detrimental habits are implicated as triggers of rosacea. The aim of current study is to evaluate several suspected risk factors coincidently. Patients with rosacea from a dermatology clinic and skin-healthy controls from an randomly selected employees' population enrolled the study. Skin status were evaluated by one and same dermatologist. Participants were queried for age, gender, sun-reactive skin type, and detrimental habits using a questionnaire; blood samples for detecting Helicobacter pylori serostatus were collected. Totally 145 skin-healthy controls and 172 subjects either with flushing episodes or established rosacea included the study. In multivariate analysis, rosacea patients had significantly higher chance to have photosensitive skin types (OR 1.75; 95% CI 1.01-3.04; P < 0.05), positive family history to rosacea (OR 4.31; 95% CI 2.34-7.92; P < 0.0001) or previous smoking status (OR 2.01; 95% CI 1.07-3.80; P < 0.05) comparing with skin-healthy controls. There were no statistically significant differences either in gender, Helicobacter pylori serostatus, caffeine intake, alcohol consumption, occupational environment, or education level between rosacea patients and controls. Rosacea is foremost associated with familial predisposition. There is no association between Helicobacter pylori infection and rosacea in current study.

  8. Skin barrier in rosacea*

    Science.gov (United States)

    Addor, Flavia Alvim Sant'Anna

    2016-01-01

    Recent studies about the cutaneous barrier demonstrated consistent evidence that the stratum corneum is a metabolically active structure and also has adaptive functions, may play a regulatory role in the inflammatory response with activation of keratinocytes, angiogenesis and fibroplasia, whose intensity depends primarily on the intensity the stimulus. There are few studies investigating the abnormalities of the skin barrier in rosacea, but the existing data already show that there are changes resulting from inflammation, which can generate a vicious circle caused a prolongation of flare-ups and worsening of symptoms. This article aims to gather the most relevant literature data about the characteristics and effects of the state of the skin barrier in rosacea. PMID:26982780

  9. Cosmeceuticals for rosacea.

    Science.gov (United States)

    Draelos, Zoe Diana

    Patients with rosacea present a challenge to the dermatologist, as they typically possess sensitive skin, need facial Demodex and bacterial colonization control, exhibit vasomotor instability, require camouflaging of telangiectatic mats, and desire prescription treatment. Currently available pharmaceuticals are aimed at inflammation reduction, primarily with the use of topical and oral antibiotics. Recently, vasoconstrictor formulations have emerged, but these drugs have only a temporary effect and improve appearance without addressing the underlying cause, which remains largely unknown. Cosmeceuticals, including cleansers, moisturizers, cosmetics, sunscreens, and anti-inflammatory botanicals, can be used as adjuvant therapies in combination with traditional therapies. This review explores the effective use of cosmeceuticals in the treatment of rosacea to enhance pharmaceutical outcomes and meet patient expectations in a more satisfactory manner. Copyright © 2016 Elsevier Inc. All rights reserved.

  10. Severe Rosacea: A Case Report.

    Science.gov (United States)

    Shirzadeh, Ebrahim; Bagheri, Abbas; Abdizadeh, Mojtaba Fattahi; Kanavi, Mozhgan Rezaei

    2017-01-01

    To describe a case of severe rosacea with ocular involvement. A 28-year-old female patient presented with extensive facial and ocular eruptions. She had a history of treatment with oral prednisolone due to the clinical diagnosis of lupus erythematosus (LE), which had resulted in transient improvement of the lesions, but was followed by exacerbation of the lesions. With the clinical diagnosis of severe oculofacial rosacea, she was successfully treated with oral doxycycline, steroid eye drops, and ocular lubricants. Histopathological features of skin biopsy were consistent with rosacea in the context of infection with Demodexfolliculorum. After four years, a relapse of the oculofacial lesions occurred, for which retreatment with oral tetracycline, steroid eye drops, and ocular lubricants was administered. Rosacea can be extremely severe and disfiguring, and it can be misdiagnosed as the pathognomonic butterfly rash of LE. Demodex carriage in rosacea is consistent and may play a significant role in the severe forms.

  11. Demodex mites in acne rosacea.

    Science.gov (United States)

    Roihu, T; Kariniemi, A L

    1998-11-01

    The hair follicle mites Demodex folliculorum and Demodex brevis and their role in the pathogenesis of rosacea have been the subject of much debate in the past. We studied the prevalence of Demodex mites in facial skin biopsies obtained from 80 patients with rosacea, 40 with facial eczematous eruption and 40 with lupus erythematosus discoides. The mite prevalence in the rosacea group (51%) was significantly higher than in the rest of the study population (eczema 28% and lupus discoides 31%). Demodex mites were found on all facial sites. The most infested areas in the whole study group were the forehead (49%) and the cheeks (44%). Males were more frequently infested (59%) than females (30%). We did not find any significant difference in mite counts of infested follicles between rosacea and the control group. A lympho-histiocytic cell infiltration was seen around the infested hair follicles. Our results suggest that Demodex mites may play a role in the inflammatory reaction in acne rosacea.

  12. Demodex and rosacea revisited.

    Science.gov (United States)

    Moran, Ellen M; Foley, Ruth; Powell, Frank C

    Demodex mites are part of the vast microbiome living on and within human skin. The interaction of the various microorganisms with the skin plays a key role in the maintenance of homeostasis. The precise role and function of Demodex mites within normal and diseased human skin remains elusive. The emergence of ivermectin as a key therapy for rosacea has refocused interest in the role of Demodex mites in the pathogenesis of this skin disease and the ability of Demodex to modulate the host immune system. Copyright © 2016 Elsevier Inc. All rights reserved.

  13. Rosacea, Reactive Oxygen Species, and Azelaic Acid

    OpenAIRE

    Jones, David A.

    2009-01-01

    Rosacea is a common skin condition thought to be primarily an inflammatory disorder. Neutrophils, in particular, have been implicated in the inflammation associated with rosacea and mediate many of their effects through the release of reactive oxygen species. Recently, the role of reactive oxygen species in the pathophysiology of rosacea has been recognized. Many effective agents for rosacea, including topical azelaic acid and topical metronidazole, have anti-inflammatory properties. in-vitro...

  14. Rosacea: where are we now?

    Science.gov (United States)

    Bikowski, Joseph B; Goldman, Mitchel P

    2004-01-01

    Advances continue to be made in the classification and treatment of rosacea, a chronic dermatologic syndrome. A new empiric classification system identifies 4 rosacea subtypes (erythematotelangiectatic, papulopustular, phymatous, and ocular) that may aid in more precise diagnosis. Several new therapies have recently been approved for treatment of rosacea. Azelaic acid 15% gel is a new first-tier topical agent proven effective in reducing inflammatory lesions and erythema. New formulations of metronidazole and sulfacetamide 10%/sulfur 5% that offer cosmetic or tolerability advantages are now available. Intense pulsed light therapy has demonstrated effectiveness in reducing flushing, erythema, and telangiectases, with greater tolerability than existing laser systems. Other treatments under investigation include low-dose doxycycline hyclate (which may provide greater safety than existing oral antibiotics), benzoyl peroxide/clindamycin gel, and tacrolimus ointment (for steroid-induced rosacea). With this expanded armamentarium of medical and light-based therapies, clinicians can now implement a multifaceted approach to treatment, crafting new treatment combinations to address the unique and evolving features of rosacea in each individual patient.

  15. Perfect Syncarpy in Apple (Malus × domestica ‘Summerland McIntosh’) and its Implications for Pollination, Seed Distribution and Fruit Production (Rosaceae: Maloideae)

    OpenAIRE

    SHEFFIELD, CORY S.; SMITH, ROBERT F.; KEVAN, PETER G.

    2005-01-01

    • Background and Aims The gynoecium of the domestic apple, Malus × domestica, has been assumed to be imperfectly syncarpic, whereby pollination of each stigmatic surface can result in fertilization within only one of the five carpels. Despite its implied effect on fruit quantity and quality, the resulting influence of flower form on seed set and distribution within the apple fruit has seldom been investigated. Instead, poor fruit quality is usually attributed to problems with pollination, suc...

  16. Perfect syncarpy in apple (Malus x domestica 'Summerland McIntosh') and its implications for pollination, seed distribution and fruit production (Rosaceae: Maloideae).

    Science.gov (United States)

    Sheffield, Cory S; Smith, Robert F; Kevan, Peter G

    2005-03-01

    The gynoecium of the domestic apple, Malus x domestica, has been assumed to be imperfectly syncarpic, whereby pollination of each stigmatic surface can result in fertilization within only one of the five carpels. Despite its implied effect on fruit quantity and quality, the resulting influence of flower form on seed set and distribution within the apple fruit has seldom been investigated. Instead, poor fruit quality is usually attributed to problems with pollination, such as low bee numbers and/or ineffective pollinators within apple agro-ecosystems. The objective of this study was to determine the true nature of gynoecial structure and its influence on fruit production in the apple cultivar 'Summerland McIntosh'. A stigma-excision method was used to determine the effects of uneven pollination among the five stigmas on fruit quantity (as measured by fruit set), and quality (seed number and distribution). In addition, flowers were examined microscopically to determine pollen tube pathways. Fruit set, seed number, seed distribution, and the microscopic examination of flower gynoecial structure reported in this study indicated that the gynoecium of the cultivar Summerland McIntosh is perfectly syncarpic and not imperfectly syncarpic as previously thought. Pollination levels among the five stigmas need not be uniform to obtain full seed development within Summerland McIntosh fruit; even if one stigmatic surface is adequately pollinated, a full complement of seeds is likely. The importance of perfect syncarpy in recognizing true causes of poor fruit quality in apple is discussed.

  17. Perfect Syncarpy in Apple (Malus × domestica ‘Summerland McIntosh’) and its Implications for Pollination, Seed Distribution and Fruit Production (Rosaceae: Maloideae)

    Science.gov (United States)

    SHEFFIELD, CORY S.; SMITH, ROBERT F.; KEVAN, PETER G.

    2005-01-01

    • Background and Aims The gynoecium of the domestic apple, Malus × domestica, has been assumed to be imperfectly syncarpic, whereby pollination of each stigmatic surface can result in fertilization within only one of the five carpels. Despite its implied effect on fruit quantity and quality, the resulting influence of flower form on seed set and distribution within the apple fruit has seldom been investigated. Instead, poor fruit quality is usually attributed to problems with pollination, such as low bee numbers and/or ineffective pollinators within apple agro-ecosystems. The objective of this study was to determine the true nature of gynoecial structure and its influence on fruit production in the apple cultivar ‘Summerland McIntosh’. • Methods A stigma-excision method was used to determine the effects of uneven pollination among the five stigmas on fruit quantity (as measured by fruit set), and quality (seed number and distribution). In addition, flowers were examined microscopically to determine pollen tube pathways. • Key Results Fruit set, seed number, seed distribution, and the microscopic examination of flower gynoecial structure reported in this study indicated that the gynoecium of the cultivar Summerland McIntosh is perfectly syncarpic and not imperfectly syncarpic as previously thought. • Conclusions Pollination levels among the five stigmas need not be uniform to obtain full seed development within Summerland McIntosh fruit; even if one stigmatic surface is adequately pollinated, a full complement of seeds is likely. The importance of perfect syncarpy in recognizing true causes of poor fruit quality in apple is discussed. Cory S. Sheffield, Robert F. Smith and Peter G. Kevan For the Department of Agriculture and Agri-Food, Government of Canada PMID:15661749

  18. [Acne and rosacea in pregnancy].

    Science.gov (United States)

    Bechstein, S K; Ochsendorf, F

    2017-02-01

    Acne and rosacea are common chronic inflammatory skin diseases. During pregnancy these skin disorders may become aggravated, in rare cases occurring for the first time. There are no data available for rosacea and little data for acne concerning the course of these skin disorders during pregnancy. Up to 42% of the pregnant women suffer from acne. In 90% of these women the disease existed before pregnancy. In 1/3, however, acne relapsed during pregnancy after a prior disease-free period. In 60% acne deteriorated during pregnancy. Randomized controlled trials for the treatment of acne or rosacea during pregnancy do not exist. In this article the recommendations of current guidelines are modified, so that effective treatments can be recommended without harming the embryo or fetus.

  19. Rosacea and its topical management.

    Science.gov (United States)

    Gooderham, M

    2009-02-01

    Many options exist for the treatment of rosacea, including topical and systemic therapies, laser and light-based therapies, and surgical procedures. A classification system for rosacea identifies 4 subtypes (i.e., erythematotelangiectatic, papulopustular, phymatous, and ocular), which may help guide therapeutic decision-making. The goals of therapy include reduction of papules, pustules, erythema, physical discomfort, and an improvement in quality of life. Standard topical treatment agents include metronidazole, azelaic acid, and sodium sulfacetamide-sulfur. Second line therapies include benzoyl peroxide, clindamycin, calcineurin inhibitors, and permethrin.

  20. A case of granulomatous rosacea

    African Journals Online (AJOL)

    Case Study: A case of granulomatous rosacea. 133. Vol 52 No 2. SA Fam Pract 2010. Clinical Quiz. A 49-year-old housewife had complained of an itchy facial rash for four years. She denied using steroid creams and skin lighteners. On examination, dark grey papules were found on her face, with some coalescing into ...

  1. Demodex and rosacea: Is there a relationship?

    Science.gov (United States)

    Gonzalez-Hinojosa, Diana; Jaime-Villalonga, Alejandro; Aguilar-Montes, Gustavo; Lammoglia-Ordiales, Lorena

    2018-01-01

    The objective of the study is to compare the frequency of Demodex on the eyelash follicle of patients with rosacea and referents without rosacea or ophthalmological disorders. This is a comparative, open, observational, and cross-sectional study that included 41 patients diagnosed with rosacea and 41 referents without rosacea diagnosis or ophthalmic alterations. The individuals underwent a slit-lamp examination in which two eyelashes per eyelid were removed with fine forceps. The presence of Demodex was sought by direct visualization under a light microscope. The results were expressed as "positive" when at least one mite on one lash was found and "negative" when no mite was identified. Chi-square test was used to compare the presence of mites in both groups. Eighty-two study individuals (45 females and 37 males) were included, of which 41 patients were diagnosed with rosacea and 41 were without rosacea or ophthalmic alterations. The average mean age was 37 years with a minimum of 19 and a maximum of 87 years. Of the 41 patients with rosacea, 31 had erythematotelangiectatic rosacea and 10 had papulopustular rosacea. There were no patients with phymatous or ocular rosacea. The presence of Demodex was found in 32 patients: 24 patients with rosacea diagnosis (16 of the erythematotelangiectatic subtype and 8 of papulopustular subtype) and 8 patients without rosacea or ophthalmic alterations (P ≤ 0.001). Rosacea was found to be a statistically significant risk factor for Demodex infestation in eyelashes, irrespective of age and sex, with a higher prevalence in papulopustular variety.

  2. Demodex and rosacea: Is there a relationship?

    Directory of Open Access Journals (Sweden)

    Diana Gonzalez-Hinojosa

    2018-01-01

    Full Text Available Purpose: The objective of the study is to compare the frequency of Demodex on the eyelash follicle of patients with rosacea and referents without rosacea or ophthalmological disorders. Methods: This is a comparative, open, observational, and cross-sectional study that included 41 patients diagnosed with rosacea and 41 referents without rosacea diagnosis or ophthalmic alterations. The individuals underwent a slit-lamp examination in which two eyelashes per eyelid were removed with fine forceps. The presence of Demodex was sought by direct visualization under a light microscope. The results were expressed as “positive” when at least one mite on one lash was found and “negative” when no mite was identified. Chi-square test was used to compare the presence of mites in both groups. Results: Eighty-two study individuals (45 females and 37 males were included, of which 41 patients were diagnosed with rosacea and 41 were without rosacea or ophthalmic alterations. The average mean age was 37 years with a minimum of 19 and a maximum of 87 years. Of the 41 patients with rosacea, 31 had erythematotelangiectatic rosacea and 10 had papulopustular rosacea. There were no patients with phymatous or ocular rosacea. The presence of Demodex was found in 32 patients: 24 patients with rosacea diagnosis (16 of the erythematotelangiectatic subtype and 8 of papulopustular subtype and 8 patients without rosacea or ophthalmic alterations (P ≤ 0.001. Conclusion: Rosacea was found to be a statistically significant risk factor for Demodex infestation in eyelashes, irrespective of age and sex, with a higher prevalence in papulopustular variety.

  3. Kallikrein 5-Mediated Inflammation in Rosacea

    Science.gov (United States)

    Two, Aimee M.

    2014-01-01

    Rosacea is a chronic inflammatory condition of facial skin estimated to affect more than 16 million Americans. Although the pathogenesis of rosacea is not fully understood, recent evidence in vitro as well as in vivo has supported the role of increased levels of the trypsin-like serine protease, kallikrein 5, in initiating an augmented inflammatory response in rosacea. The increase in the quantity and magnitude of biological activity of kallikrein 5 leads to production of greater quantities of cathelicidin (LL-37), an antimicrobial peptide associated with increases in innate cutaneous inflammation, vasodilation, and vascular proliferation, all of which are characteristic features of rosacea. In this article, the authors review the literature supporting the role of kallikrein 5 in the pathophysiology of rosacea, including how therapeutic interventions modulate the effects of kallikrein 5, thus providing further support for this pathophysiological model that at least partially explains many of the clinical features of cutaneous rosacea. PMID:24563692

  4. The relationship between migraine and rosacea

    DEFF Research Database (Denmark)

    Christensen, Casper Emil; Andersen, Frederikke Schelde; Wienholtz, Nita

    2017-01-01

    Objective To systematically review the association between migraine and rosacea. Background Migraine is a complex disorder with episodes of headache, nausea, photo- and phonophobia. Rosacea is an inflammatory skin condition with flushing, erythema, telangiectasia, papules, and pustules. Both...... PubMed and EMBASE was undertaken for studies investigating the association between all forms of migraine and rosacea published until November 2016, and meta-analysis of eligible studies. Results Nine studies on eight populations were identified. Studies differed in methodology and diagnostic process......, but all investigated co-occurrence of migraine and rosacea. Four studies were eligible for meta-analysis, resulting in a pooled odds ratio of 1.96 (95% confidence interval 1.41-2.72) for migraine in a rosacea population compared to a non-rosacea population. Conclusion Our meta-analysis confirmed...

  5. Tetracycline Actions Relevant to Rosacea Treatment

    OpenAIRE

    Korting, Hans Christian; Schöllmann, C.

    2009-01-01

    Until today, the pathogenesis of rosacea is not known in detail. Yet in recent years evidence has been accumulating that rosacea with its common symptoms such as inflammatory lesions, erythema, telangiectasia, phymatous changes, and ocular symptoms is of inflammatory nature. Tetracycline derivatives like doxycycline successfully used in the treatment of skin diseases like acne and rosacea seem to inhibit different inflammatory pathways involved in the pathogenesis by various modes of action. ...

  6. Women May Need Added Therapy for Rosacea

    Science.gov (United States)

    ... Moisturizer Makeup Tips Men's Shaving Tips Causes of Rosacea Introduction Innate Immune System Neurovascular System Vascular Changes Demodex & Microbes Bibliography Genetics The Ecology of Your Face ...

  7. Ivermectin 1% cream for rosacea.

    Science.gov (United States)

    Gupta, G; Daigle, D; Gupta, A K; Gold, L S

    2015-01-01

    The etiology of papulopustular rosacea (PPR) is not well understood yet appears to involve both the innate and adaptive immune response in addition to possible infestation with Demodex mites. Current treatments for PPR consist mainly of antibiotics. Ivermectin cream 1%, a new topical treatment for PPR, possesses both anti-inflammatory and anti-parasitic properties. After 12 weeks of treatment, subjects treated with ivermectin cream 1% had significantly greater reductions in PPR symptoms and enhanced diseaserelated quality of life improvements compared to subjects who received vehicle. Furthermore, PPR symptoms continued to improve with prolonged treatment (40 weeks). Ivermectin cream 1% offers a multi-pronged approach to combat the complex pathophysiology of rosacea.

  8. Acne Rosacea With Rare Eye Changes

    Directory of Open Access Journals (Sweden)

    Mittal R R

    2000-01-01

    Full Text Available One 55 year old army officer had all 3 variants of acane rosacea occurring simultaneously for 9 years. Associated rare, serious complications as prominent rosacea keratitis, deterioration of vision, rhinophyma and lymphoedema were seen. We are reporting the present case as the above combination is rare.

  9. Therapeutic response of rosacea to dobesilate.

    Science.gov (United States)

    Cuevas, Pedro; Arrazola, J M

    2005-10-18

    Despite an incomplete understanding of the pathogenesis of rosacea, therapeutic modalities continue to expand. The principal subtype of rosacea includes erythematotelangiestatic rosacea, which is characterized by uncontrolled angiogenesis. Angiogenic growth factors such as fibroblast growth factors (FGF) and vascular endothelial growth factor (VEGF) are currently targets of intense effort to inhibit deregulated blood vessel formation in diseases such as cancer. Here we report a 33-years-old woman with erythematotelangestatic rosacea who responds to a daily treatment of topically applied dobesilate, an inhibitor of FGF, with an improvement in erythema and telangectasia after two weeks. Thus, dobesilate might be useful in the treatment of rosacea and other diseases that depend on pathologic angiogenesis.

  10. Rosacea: the Cytokine and Chemokine Network

    Science.gov (United States)

    Gerber, Peter Arne; Buhren, Bettina Alexandra; Steinhoff, Martin; Homey, Bernhard

    2013-01-01

    Rosacea is one of the most common dermatoses of adults. Recent studies have improved our understanding of the pathophysiology of rosacea. Current concepts suggest that known clinical trigger factors of rosacea such as UV radiation, heat, cold, stress, spicy food, and microbes modulate Toll-like receptor signaling, induce reactive oxygen species, as well as enhance antimicrobial peptide and neuropeptide production. Downstream of these events cytokines and chemokines orchestrate an inflammatory response that leads to the recruitment and activation of distinct leukocyte subsets and induces the characteristic histopathological features of rosacea. Here we summarize the current knowledge of the cytokine and chemokine network in rosacea and propose pathways that may be of therapeutic interest. PMID:22076326

  11. Tetracycline actions relevant to rosacea treatment.

    Science.gov (United States)

    Korting, H C; Schöllmann, C

    2009-01-01

    Until today, the pathogenesis of rosacea is not known in detail. Yet in recent years evidence has been accumulating that rosacea with its common symptoms such as inflammatory lesions, erythema, telangiectasia, phymatous changes, and ocular symptoms is of inflammatory nature. Tetracycline derivatives like doxycycline successfully used in the treatment of skin diseases like acne and rosacea seem to inhibit different inflammatory pathways involved in the pathogenesis by various modes of action. Although data for skin diseases are relatively scanty, the following modes of action of tetracyclines seem to be most relevant for an effective treatment of acne and rosacea: inhibition of matrix metalloproteinases, downmodulation of cytokines, inhibition of cell movement and proliferation, inhibition of granuloma formation, inhibition of reactive oxygen species, nitric oxide, and angiogenesis, whereas inhibition of phospholipase A2 seems to be of lower importance. The role of the saprophytic mite Demodex folliculorum remains to be clarified. Additional studies are necessary to further elucidate how tetracyclines work in rosacea treatment.

  12. Rosacea is associated with Helicobacter pylori

    DEFF Research Database (Denmark)

    Jørgensen, Anders; Egeberg, A; Gideonsson, R

    2017-01-01

    BACKGROUND: Rosacea is a common skin disease characterized by facial erythema, telangiectasia, papules and pustules. Helicobacter pylori infection has been suggested to play a role in the etiopathogenesis of rosacea. OBJECTIVE: To systematically review and meta-analyse the relationship between...... rosacea and infection with Helicobacter pylori. METHODS: A literature search was performed using PubMed, EMBASE and Web of Science. Data extraction and analyses were performed on descriptive data. Study quality was assessed using the Newcastle-Ottawa Scale. Random-effects models with Der...... in the quantitative meta-analysis, comprising a total of 928 rosacea patients and 1527 controls. The overall association between Helicobacter pylori infection and rosacea was non-significant (OR 1.68, 95% CI 1.00-2.84, P = 0.052), but analysis restricted to C-urea breath test showed a significant association (OR 3...

  13. The treatment of rosacea with topical ivermectin.

    Science.gov (United States)

    Ali, S T; Alinia, H; Feldman, S R

    2015-04-01

    The treatment of rosacea is challenging because several pathophysiologic processes may be involved, including neurovascular dysregulation and alterations in innate immune status. Demodex mites may play a role in the latter mechanism. Topical ivermectin is a new therapeutic modality which demonstrates antiparasitic and anti-inflammatory properties. This article reviews published evidence related to the efficacy and safety of topical ivermectin. PubMed was utilized to search for key words "topical ivermectin", "ivermectin cream" and "rosacea". Three clinical trials were found that studied topical ivermectin as a treatment option for rosacea. Ivermectin was effective, safe and well tolerated. Copyright 2015 Prous Science, S.A.U. or its licensors. All rights reserved.

  14. Infectious agents in the pathogenesis of rosacea

    Directory of Open Access Journals (Sweden)

    Dorota M. Mehrholz

    2016-09-01

    Full Text Available Acne rosacea is a chronic inflammatory skin disease that affects the face. The symptoms depend on the stage of the disease. The first stage is characterized by erythema and telangiectasia. This is followed by a papulopustular phase and a phymatous type in the final stages. An ocular type of rosacea is described in the literature as well. In the etiopathogenesis of papulo-pustular and ocular types of rosacea, inflammatory response modulation caused by microorganisms living on the skin play a key role. Binding of bacterial ligands with epidermal receptors leads to induction of the inflammatory cascade. This leads to vasodilation and white blood cell chemotaxis, which causes a change in the microenvironment of the skin that assists in microorganism proliferation. Microorganisms such as Demodex folliculorum, Bacillus oleronius, Staphylococcus epidermidis, Chlamydia pneumoniae and Helicobacter pylori play a crucial role in the pathogenesis of rosacea.

  15. Rosacea and Helicobacter pylori: links and risks

    Science.gov (United States)

    Lazaridou, Elizabeth; Korfitis, Chrysovalantis; Kemanetzi, Christina; Sotiriou, Elena; Apalla, Zoe; Vakirlis, Efstratios; Fotiadou, Christina; Lallas, Aimilios; Ioannides, Demetrios

    2017-01-01

    Rosacea is a chronic skin disease characterized by facial erythema and telangiectasia. Despite the fact that many hypotheses have been proposed, its etiology remains unknown. In the present review, the possible link and clinical significance of Helicobacter pylori in the pathogenesis of rosacea are being sought. A PubMed and Google Scholar search was performed using the terms “rosacea”, “H.pylori”, “gastrointestinal disorders and H.pylori”, “microorganisms and rosacea”, “pathogenesis and treatment of rosacea”, and “risk factors of rosacea”, and selected publications were studied and referenced in text. Although a possible pathogenetic link between H. pylori and rosacea is advocated by many authors, evidence is still interpreted differently by others. We conclude that further studies are needed in order to fully elucidate the pathogenesis of rosacea. PMID:28848358

  16. [Rosacea: pathogenesis, clinical forms and therapy].

    Science.gov (United States)

    Preisz, Klaudia; Kárpáti, Sarolta

    2010-07-25

    Rosacea is one of the most common chronic dermatological diseases. It is characterized by transient or persistent facial erythema, teleangiectasias, papules and pustules, usually on the central portion of the face. Rosacea can be classified into four main subtypes: erythemato-teleangiectatic, papulopustular, phymatous, and ocular. These subtypes require different therapeutic approaches. Regarding to the pathomechanism, several hypotheses have been documented in the literature, including genetic and environmental factors, vascular abnormalities, dermal matrix degeneration, microorganisms such as Demodex folliculorum and Helicobacter pylori, but the cause of rosacea is still not known. Authors in this article review current literature on new classification system of rosacea, as well as the main pathogenetic theories and current therapeutic options.

  17. Red in the Face: Understanding Rosacea

    Science.gov (United States)

    ... Special Issues Subscribe August 2012 Print this issue Red in the Face Understanding Rosacea Send us your ... complexion as a sign of good health. But red patches on the face may point to something ...

  18. Rosacea and risk of cancer in Denmark

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Fowler, Joseph F; Gislason, Gunnar H

    2017-01-01

    BACKGROUND: Rosacea is a common facial skin disorder with an estimated prevalence of 5-10% among Caucasians. OBJECTIVE: We compared cancer incidence in patients previously diagnosed with rosacea with that in the general population. METHODS: Nationwide cohort study of the Danish population using...... individual-level linkage of administrative registers. All Danish citizens aged ≥18years were followed from January 1st 2008 to December 31st 2012. Patients with rosacea (the exposure) were compared with the general population, serving as control subjects. The outcome was a diagnosis of one of the following...... for age, sex, socio-economic status, and healthcare consumption were estimated by Cox regression models. RESULTS: The study comprised a total of 49,475 patients with rosacea and 4,312,213 subjects from the general population. There was no increased risk of malignant melanoma, ovarian, endometrial...

  19. Rosacea and risk of cancer in Denmark.

    Science.gov (United States)

    Egeberg, Alexander; Fowler, Joseph F; Gislason, Gunnar H; Thyssen, Jacob P

    2017-04-01

    Rosacea is a common facial skin disorder with an estimated prevalence of 5-10% among Caucasians. We compared cancer incidence in patients previously diagnosed with rosacea with that in the general population. Nationwide cohort study of the Danish population using individual-level linkage of administrative registers. All Danish citizens aged ≥18years were followed from January 1st 2008 to December 31st 2012. Patients with rosacea (the exposure) were compared with the general population, serving as control subjects. The outcome was a diagnosis of one of the following cancers: breast, ovarian, endometrial, cervical, kidney, malignant melanoma, non-melanoma skin cancer (NMSC), pancreatic, hepatic, thyroid, esophageal, and lung cancer. Baseline prevalence of cancers were assessed, incidence rates per 1000 person-years were calculated, and hazard ratios (HRs) adjusted for age, sex, socio-economic status, and healthcare consumption were estimated by Cox regression models. The study comprised a total of 49,475 patients with rosacea and 4,312,213 subjects from the general population. There was no increased risk of malignant melanoma, ovarian, endometrial, cervical, esophageal, kidney, pancreatic, or thyroid cancer. However the risk of hepatic cancer (HR 1.42; 95% confidence interval [CI] 1.06-1.90), NMSC (HR 95% CI 1.36; 1.26-1.47), and breast cancer (HR 1.25; 95% CI 1.15-1.36) was significantly increased, and the risk of incident lung cancer was significantly decreased (HR 0.78; 95% CI 0.69-0.89). We found an increased risk of NMSC, breast cancer, and hepatic cancer, and a reduced risk of lung cancer, among patients with rosacea. These results are in contrast to the limited published data on cancers in rosacea, and further studies are warranted to elucidate the potential relationship between rosacea and various cancers. The findings add to the overall clinical description of patients with rosacea. Copyright © 2017 Elsevier Ltd. All rights reserved.

  20. Oral Azithromycin for Treatment of Intractable Rosacea

    OpenAIRE

    Kim, Jae-Hong; Oh, Yoon Seok; Choi, Eung Ho

    2011-01-01

    Rosacea is a common chronic cutaneous disorder that primarily occurs on the convex surfaces of the central face and is often characterized by exacerbations and remissions. A case of a 52-yr-old woman visited our clinic in February 2008 complaining typical features of rosacea including multiple pinhead to rice-sized erythematous papules. We applied various conventional treatments including topical benzoyl peroxide and metronidazole as well as oral metronidazole, isotretinoin, and doxycycline. ...

  1. Update on the management of rosacea

    Directory of Open Access Journals (Sweden)

    Weinkle AP

    2015-04-01

    Full Text Available Allison P Weinkle,1 Vladyslava Doktor,2 Jason Emer3 1School of Medicine, University of California San Diego, La Jolla, CA, 2Dermatology Department, St John's Episcopal Hospital, Queens, NY, 3Spalding Drive Plastic Surgery and Dermatology, Beverly Hills, CA, USA Abstract: Refining diagnostic criteria has identified key characteristics differentiating rosacea, a chronic skin disorder, from other common cutaneous inflammatory conditions. The current classification system developed by the National Rosacea Society Expert Committee consists of erythematotelangiectatic, papulopustular, phymatous, and ocular subtypes. Each subtype stands as a unique entity among a spectrum, with characteristic symptoms and physical findings, along with an intricate pathophysiology. The main treatment modalities for rosacea include topical, systemic, laser, and light therapies. Topical brimonidine tartrate gel and calcineurin inhibitors are at the forefront of topical therapies, alone or in combination with traditional therapies such as topical metronidazole or azelaic acid and oral tetracyclines or isotretinoin. Vascular laser and intense pulsed light therapies are beneficial for the erythema and telangiectasia, as well as the symptoms (itching, burning, pain, stinging, swelling of rosacea. Injectable botulinum toxin, topical ivermectin, and microsecond long-pulsed neodymium-yttrium aluminum garnet laser are emerging therapies that may prove to be extremely beneficial in the future. Once a debilitating disorder, rosacea has become a well known and manageable entity in the setting of numerous emerging therapeutic options. Herein, we describe the treatments currently available and give our opinions regarding emerging and combination therapies. Keywords: rosacea, vascular laser, rhinophyma, management, guidelines

  2. Histopathological Analysis of 226 Patients With Rosacea According to Rosacea Subtype and Severity.

    Science.gov (United States)

    Lee, Woo Jin; Jung, Joon Min; Lee, Ye Jin; Won, Chong Hyun; Chang, Sung Eun; Choi, Jee Ho; Moon, Kee Chan; Lee, Mi Woo

    2016-05-01

    The histopathological features of rosacea have not been described in detail. To evaluate the histopathological features of rosacea according to clinical characteristics such as subtype and severity. We retrospectively analyzed histopathological findings in 226 patients with rosacea, which included 52 patients with the erythematotelangiectatic rosacea (ETR) and 174 patients with the papulopustular rosacea (PPR) subtype. The frequency of each histopathological finding was compared between subtypes. Histopathological features were also compared according to the severity, through subgroup analysis within each subtype group. Perivascular and perifollicular lymphohistiocytic infiltration were common dermal findings in both subtype groups, but the intensity of dermal inflammatory infiltration was higher in PPR than in ETR. Follicular spongiosis and exocytosis of inflammatory cells into hair follicles were noted in both subtypes; but these findings were significantly more common in the PPR subtype. Vascular changes (telangiectasia and proliferation) and solar elastosis were common histopathological findings in both subtypes, with no difference in frequency between subtype groups. Demodex mites were identified in about 40% of patients, and the frequency of demodex mites did not differ between subtype groups. The intensity of perifollicular inflammation and the presence of follicular inflammatory reactions were dependent on the severity of rosacea in both subtype groups. The intensity of inflammatory reactions, especially perifollicular infiltration, was higher in PPR patients than in ETR patients. Rosacea has a spectrum of histopathological features that are related to clinical progression between rosacea subtypes.

  3. Standard classification and pathophysiology of rosacea: The 2017 update by the National Rosacea Society Expert Committee.

    Science.gov (United States)

    Gallo, Richard L; Granstein, Richard D; Kang, Sewon; Mannis, Mark; Steinhoff, Martin; Tan, Jerry; Thiboutot, Diane

    2018-01-01

    In 2002, the National Rosacea Society assembled an expert committee to develop the first standard classification of rosacea. This original classification was intended to be updated as scientific knowledge and clinical experience increased. Over the last 15 years, significant new insights into rosacea's pathogenesis and pathophysiology have emerged, and the disorder is now widely addressed in clinical practice. Growing knowledge of rosacea's pathophysiology has established that a consistent multivariate disease process underlies the various clinical manifestations of this disorder, and the clinical significance of each of these elements is increasing as more is understood. This review proposes an updated standard classification of rosacea that is based on phenotypes linked to our increased understanding of disease pathophysiology. This updated classification is intended to provide clearer parameters to conduct investigations, guide diagnosis, and improve treatment. Copyright © 2017 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  4. [Pathogenesis, clinical picture, and current therapy of rosacea].

    Science.gov (United States)

    Gonser, L I; Gonser, C E; Schaller, M

    2016-01-01

    Rosacea is a common chronic inflammatory disease, especially in patients with fair skin and positive family history. Typical locations are forehead, nose, cheeks and chin; the periorbital region is usually not involved. Clinical features can be very heterogeneous. Besides different subtypes (erythematotelangiectatic rosacea, papulopustular rosacea, phymatous rosacea), which often overlap, various special forms of rosacea exist. Up to 60% of patients with cutaneous rosacea suffer from ocular rosacea. In Germany, brimonidine, metronidazol, azelaic acid, and ivermectin are approved for topical therapy of rosacea; for systemic therapy, doxycycline at a subantimicrobial dose (40 mg/day) is the only approved substance. In case of resistance to this therapy, contraindications or side effects, various alternative therapies are available, however off-label.

  5. Topical tranexamic acid improves the permeability barrier in rosacea

    Directory of Open Access Journals (Sweden)

    Shaomin Zhong

    2015-06-01

    Conclusion: Topical tranexamic acid could improve the epidermal permeability barrier function and clinical signs of rosacea, likely resulting from inhibition of PAR-2 activation and consequent calcium influx. Thus, tranexamic acid could serve as an adjuvant therapy for rosacea.

  6. Rosacea

    Science.gov (United States)

    ... or an eyelid cleaner and then applying a warm (but not hot) compress a few times a day. Whatever you ... hot baths. Exercise. Sunlight. Wind. Very cold temperatures. Hot or spicy foods and drinks. Alcohol. Menopause. Emotional stress. Long-term use of ...

  7. Phylogenetic relationships of the Gorgoderidae (Platyhelminthes: Trematoda), including the proposal of a new subfamily (Degeneriinae n. subfam.).

    Science.gov (United States)

    Cutmore, Scott C; Miller, Terrence L; Curran, Stephen S; Bennett, Michael B; Cribb, Thomas H

    2013-08-01

    Phylogenetic analyses of a range of gorgoderid trematodes based on ITS2 and partial 28S rDNA data lead us to propose the Degeneriinae n. subfam. for the genus Degeneria in recognition of its phylogenetic isolation and distinctive morphology and biology. The current concepts of the subfamilies Anaporrhutinae and Gorgoderinae were supported. Within the Gorgoderinae, the large genus Phyllodistomum is shown to be paraphyletic relative to Pseudophyllodistomum and Xystretrum. Notably, the clade of marine Phyllodistomum does not form a clade with the other marine genus, Xystretrum. Distinct clades within the Gorgoderinae correspond variously to identity of first intermediate host, form of cercaria and their marine or freshwater habitat. We are not yet in a position to propose separate genera for these clades.

  8. Updating the diagnosis, classification and assessment of rosacea: recommendations from the global ROSacea COnsensus (ROSCO) panel.

    Science.gov (United States)

    Tan, J; Almeida, L M C; Bewley, A; Cribier, B; Dlova, N C; Gallo, R; Kautz, G; Mannis, M; Oon, H H; Rajagopalan, M; Steinhoff, M; Thiboutot, D; Troielli, P; Webster, G; Wu, Y; van Zuuren, E J; Schaller, M

    2017-02-01

    Rosacea is currently diagnosed by consensus-defined primary and secondary features and managed by subtype. However, individual features (phenotypes) can span multiple subtypes, which has implications for clinical practice and research. Adopting a phenotype-led approach may facilitate patient-centred management. To advance clinical practice by obtaining international consensus to establish a phenotype-led rosacea diagnosis and classification scheme with global representation. Seventeen dermatologists and three ophthalmologists used a modified Delphi approach to reach consensus on statements pertaining to critical aspects of rosacea diagnosis, classification and severity evaluation. All voting was electronic and blinded. Consensus was achieved for transitioning to a phenotype-based approach to rosacea diagnosis and classification. The following two features were independently considered diagnostic for rosacea: (i) persistent, centrofacial erythema associated with periodic intensification; and (ii) phymatous changes. Flushing, telangiectasia, inflammatory lesions and ocular manifestations were not considered to be individually diagnostic. The panel reached agreement on dimensions for phenotype severity measures and established the importance of assessing the patient burden of rosacea. The panel recommended an approach for diagnosis and classification of rosacea based on disease phenotype. © 2016 The Authors. British Journal of Dermatology published by John Wiley & Sons Ltd on behalf of British Association of Dermatologists.

  9. Update on the management of rosacea

    Science.gov (United States)

    Weinkle, Allison P; Doktor, Vladyslava; Emer, Jason

    2015-01-01

    Refining diagnostic criteria has identified key characteristics differentiating rosacea, a chronic skin disorder, from other common cutaneous inflammatory conditions. The current classification system developed by the National Rosacea Society Expert Committee consists of erythematotelangiectatic, papulopustular, phymatous, and ocular subtypes. Each subtype stands as a unique entity among a spectrum, with characteristic symptoms and physical findings, along with an intricate pathophysiology. The main treatment modalities for rosacea include topical, systemic, laser, and light therapies. Topical brimonidine tartrate gel and calcineurin inhibitors are at the forefront of topical therapies, alone or in combination with traditional therapies such as topical metronidazole or azelaic acid and oral tetracyclines or isotretinoin. Vascular laser and intense pulsed light therapies are beneficial for the erythema and telangiectasia, as well as the symptoms (itching, burning, pain, stinging, swelling) of rosacea. Injectable botulinum toxin, topical ivermectin, and microsecond long-pulsed neodymium-yttrium aluminum garnet laser are emerging therapies that may prove to be extremely beneficial in the future. Once a debilitating disorder, rosacea has become a well known and manageable entity in the setting of numerous emerging therapeutic options. Herein, we describe the treatments currently available and give our opinions regarding emerging and combination therapies. PMID:25897253

  10. Rosacea and Helicobacter pylori: links and risks

    Directory of Open Access Journals (Sweden)

    Lazaridou E

    2017-08-01

    Full Text Available Elizabeth Lazaridou,1 Chrysovalantis Korfitis,2 Christina Kemanetzi,1 Elena Sotiriou,1 Zoe Apalla,1 Efstratios Vakirlis,1 Christina Fotiadou,1 Aimilios Lallas,1 Demetrios Ioannides1 1First Department of Dermatology and Venereology, Aristotle University Medical School, Thessaloniki, Greece; 2Department of Dermatology, 401 General Army Hospital, Athens, Greece Abstract: Rosacea is a chronic skin disease characterized by facial erythema and telangiectasia. Despite the fact that many hypotheses have been proposed, its etiology remains unknown. In the present review, the possible link and clinical significance of Helicobacter pylori in the pathogenesis of rosacea are being sought. A PubMed and Google Scholar search was performed using the terms “rosacea”, “H.pylori”, “gastrointestinal disorders and H.pylori”, “microorganisms and rosacea”, “pathogenesis and treatment of rosacea”, and “risk factors of rosacea”, and selected publications were studied and referenced in text. Although a possible pathogenetic link between H. pylori and rosacea is advocated by many authors, evidence is still interpreted differently by others. We conclude that further studies are needed in order to fully elucidate the pathogenesis of rosacea. Keywords: eradication, Helicobacter pylori, pathogenesis, rosacea

  11. Molecular evolution of Adh and LEAFY and the phylogenetic utility of their introns in Pyrus (Rosaceae

    Directory of Open Access Journals (Sweden)

    Cao Jiashu

    2011-09-01

    Full Text Available Abstract Background The genus Pyrus belongs to the tribe Pyreae (the former subfamily Maloideae of the family Rosaceae, and includes one of the most important commercial fruit crops, pear. The phylogeny of Pyrus has not been definitively reconstructed. In our previous efforts, the internal transcribed spacer region (ITS revealed a poorly resolved phylogeny due to non-concerted evolution of nrDNA arrays. Therefore, introns of low copy nuclear genes (LCNG are explored here for improved resolution. However, paralogs and lineage sorting are still two challenges for applying LCNGs in phylogenetic studies, and at least two independent nuclear loci should be compared. In this work the second intron of LEAFY and the alcohol dehydrogenase gene (Adh were selected to investigate their molecular evolution and phylogenetic utility. Results DNA sequence analyses revealed a complex ortholog and paralog structure of Adh genes in Pyrus and Malus, the pears and apples. Comparisons between sequences from RT-PCR and genomic PCR indicate that some Adh homologs are putatively nonfunctional. A partial region of Adh1 was sequenced for 18 Pyrus species and three subparalogs representing Adh1-1 were identified. These led to poorly resolved phylogenies due to low sequence divergence and the inclusion of putative recombinants. For the second intron of LEAFY, multiple inparalogs were discovered for both LFY1int2 and LFY2int2. LFY1int2 is inadequate for phylogenetic analysis due to lineage sorting of two inparalogs. LFY2int2-N, however, showed a relatively high sequence divergence and led to the best-resolved phylogeny. This study documents the coexistence of outparalogs and inparalogs, and lineage sorting of these paralogs and orthologous copies. It reveals putative recombinants that can lead to incorrect phylogenetic inferences, and presents an improved phylogenetic resolution of Pyrus using LFY2int2-N. Conclusions Our study represents the first phylogenetic analyses based

  12. Advances in Understanding and Managing Rosacea: Part 2: The Central Role, Evaluation, and Medical Management of Diffuse and Persistent Facial Erythema of Rosacea

    OpenAIRE

    Del Rosso, James Q.

    2012-01-01

    In this article, the second part of a two-part series on rosacea, emphasis will be placed on persistent facial erythema. Despite variations in the intensity of visible redness, persistent facial erythema is a very common and consistent finding among patients with rosacea, including those with presentations classically defined as papulopustular rosacea, erythematotelangiectatic rosacea, and in many patients with phymatous rosacea. The underlying mechanisms of rosacea and their correlation with...

  13. Oral azithromycin for treatment of intractable rosacea.

    Science.gov (United States)

    Kim, Jae-Hong; Oh, Yoon Seok; Choi, Eung Ho

    2011-05-01

    Rosacea is a common chronic cutaneous disorder that primarily occurs on the convex surfaces of the central face and is often characterized by exacerbations and remissions. A case of a 52-yr-old woman visited our clinic in February 2008 complaining typical features of rosacea including multiple pinhead to rice-sized erythematous papules. We applied various conventional treatments including topical benzoyl peroxide and metronidazole as well as oral metronidazole, isotretinoin, and doxycycline. The lesions were not controlled but were rather aggravated by complications from these treatments. Therefore, we prescribed oral azithromycin, which has anti-inflammatory effects and reduces reactive oxygen species. Ten weeks after the administration of oral azithromycin, 500 mg per day for 2 weeks, the lesions had mostly disappeared and no specific side effects related to the azithromycin were noted. Oral azithromycin dosing 500 mg/day for 2 weeks is effective for treatment of intractable rosacea.

  14. Advances in Understanding and Managing Rosacea: Part 2

    Science.gov (United States)

    2012-01-01

    In this article, the second part of a two-part series on rosacea, emphasis will be placed on persistent facial erythema. Despite variations in the intensity of visible redness, persistent facial erythema is a very common and consistent finding among patients with rosacea, including those with presentations classically defined as papulopustular rosacea, erythematotelangiectatic rosacea, and in many patients with phymatous rosacea. The underlying mechanisms of rosacea and their correlation with specific clinical features have been discussed in Part 1 and are referred to here where applicable. An overview of cutaneous vasculature, role of alpha-adrenoreceptors, and a discussion of available medical therapies and treatment selection are also presented, including emerging topical options for diffuse and persistent facial erythema of rosacea. PMID:22468177

  15. Alcohol intake and risk of rosacea in US women.

    Science.gov (United States)

    Li, Suyun; Cho, Eunyoung; Drucker, Aaron M; Qureshi, Abrar A; Li, Wen-Qing

    2017-06-01

    The epidemiologic association between alcohol and rosacea is unclear and inconsistent based on the previous cross-sectional or case-control studies. We conducted a cohort study to determine the association between alcohol intake and the risk of rosacea in women. A total of 82,737 women were included from the Nurses' Health Study II (1991-2005). Information on alcohol intake was collected every 4 years during follow-up. Information on history of clinician-diagnosed rosacea and year of diagnosis was collected in 2005. Over 14 years of follow-up, we identified 4945 cases of rosacea. Compared with never drinkers, increased alcohol intake was associated with a significantly increased risk of rosacea (P trend rosacea. This was an epidemiologic study without examination into etiologic mechanisms. Alcohol intake was significantly associated with an increased risk of rosacea in women. Copyright © 2017 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  16. [Relationship between the Demodex and bacteria infection in human rosacea].

    Science.gov (United States)

    Hu, Qun; Wang, Yan; Tong, Li

    2004-02-28

    To understand the relationship between Demodex and bacteria infection in rosacea (brandy nose), and to find effective means for the treatment. Cellophane tape was used to detect Demodex on the nasolabial grooves and the face; sebum and tissue on face was scraped and cultured to examine bacteria under microscope. The hospital-made anti-rosacea lotion was used on the affected part two times a day for 7 days. It was found that 193 (74.2%) of 260 cases with rosacea were infected by Demodex and 209 (80.4%) of the patients were infected by bacteria. The overall effective rate of the treatment for rosacea was 73.5%. Bacteria infection in rosacea is an important factor inducing rosacea. The curative effect of the anti-rosacea lotion is good.

  17. Rosacea fulminans or acute rosacea? Report of 5 cases and review of the literature.

    Science.gov (United States)

    Mantovani, Lucia; Zauli, Stefania; Virgili, Annarosa; Bettoli, Vincenzo

    2016-10-01

    Rosacea fulminans, previously called pyoderma faciale, is an inflammatory disease considered a dramatic form of rosacea rather than of acne. Typical features are: exclusive facial involvement of young women, sudden onset of large nodules without other signs of acne, remission without scarring or with minimal scars, no recurrences or systemic symptoms. Oral isotretinoin associated with a short course of systemic and topical corticosteroids represent the recommended treatment. Personal observation of 5 cases has induced us to make a review of worldwide literature in order to better define this clinical entity. In our opinion, rosacea fulminans is a valid diagnosis, but clinical criteria should be rigorously respected to fully exclude rosacea conglobata and acne fulminans.

  18. Rosacea: part II. Topical and systemic therapies in the treatment of rosacea.

    Science.gov (United States)

    Two, Aimee M; Wu, Wiggin; Gallo, Richard L; Hata, Tissa R

    2015-05-01

    Although rosacea's impact on physical health is limited, it has profound effects on a person's psychological well-being. Therefore, treating rosacea can greatly affect a person's quality of life. Patient education regarding trigger avoidance and skin care techniques such as moisturizing and sun protection are important non-pharmacologic first steps in treating rosacea. Pharmacologic interventions range from topical to systemic medications, with the ideal medication choice dependent on the symptoms and severity of each individual patient. Despite this variety of therapeutic options, none of these therapies are completely curative, and therefore further research into the pathophysiology of rosacea is required in order to create more targeted and efficacious treatment options. Copyright © 2014 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  19. Rosacea treatment update: recommendations from the global ROSacea COnsensus (ROSCO) panel.

    Science.gov (United States)

    Schaller, M; Almeida, L M C; Bewley, A; Cribier, B; Dlova, N C; Kautz, G; Mannis, M; Oon, H H; Rajagopalan, M; Steinhoff, M; Thiboutot, D; Troielli, P; Webster, G; Wu, Y; van Zuuren, E; Tan, J

    2017-02-01

    Rosacea is currently treated according to subtypes. As this does not adequately address the spectrum of clinical presentation (phenotypes), it has implications for patient management. The ROSacea COnsensus panel was established to address this issue. To incorporate current best treatment evidence with clinical experience from an international expert panel and establish consensus to improve outcomes for patients with rosacea. Seventeen dermatologists and three ophthalmologists reached consensus on critical aspects of rosacea treatment and management using a modified Delphi approach. The panel voted on statements using the responses 'strongly disagree', 'disagree', 'agree' or 'strongly agree'. Consensus was defined as ≥ 75% 'agree' or 'strongly agree'. All voting was electronic and blinded. The panel agreed on phenotype-based treatments for signs and symptoms presenting in individuals with rosacea. First-line treatments were identified for individual major features of transient and persistent erythema, inflammatory papules/pustules, telangiectasia and phyma, underpinned by general skincare measures. Multiple features in an individual patient can be simultaneously treated with multiple agents. If treatment is inadequate given appropriate duration, another first-line option or the addition of another first-line agent should be considered. Maintenance treatment depends on treatment modality and patient preferences. Ophthalmological referral for all but the mildest ocular features should be considered. Lid hygiene and artificial tears in addition to medications are used to treat ocular rosacea. Rosacea diagnosis and treatment should be based on clinical presentation. Consensus was achieved to support this approach for rosacea treatment strategies. © 2016 The Authors. British Journal of Dermatology published by John Wiley & Sons Ltd on behalf of British Association of Dermatologists.

  20. Pollen morphology of some European Rosaceae

    NARCIS (Netherlands)

    Reitsma, Tj.

    1966-01-01

    In this preliminary investigation attention was paid to pollen morphology of West-European species of the Rosaceae. Some new terms were used like fastigium, endocingulus etc. The terminology of Iversen and Troels-Smith has been followed in addition to improvements by Erdtman. A key is given to the

  1. Multiple Models for Rosaceae Genomics[OA

    Science.gov (United States)

    Shulaev, Vladimir; Korban, Schuyler S.; Sosinski, Bryon; Abbott, Albert G.; Aldwinckle, Herb S.; Folta, Kevin M.; Iezzoni, Amy; Main, Dorrie; Arús, Pere; Dandekar, Abhaya M.; Lewers, Kim; Brown, Susan K.; Davis, Thomas M.; Gardiner, Susan E.; Potter, Daniel; Veilleux, Richard E.

    2008-01-01

    The plant family Rosaceae consists of over 100 genera and 3,000 species that include many important fruit, nut, ornamental, and wood crops. Members of this family provide high-value nutritional foods and contribute desirable aesthetic and industrial products. Most rosaceous crops have been enhanced by human intervention through sexual hybridization, asexual propagation, and genetic improvement since ancient times, 4,000 to 5,000 B.C. Modern breeding programs have contributed to the selection and release of numerous cultivars having significant economic impact on the U.S. and world markets. In recent years, the Rosaceae community, both in the United States and internationally, has benefited from newfound organization and collaboration that have hastened progress in developing genetic and genomic resources for representative crops such as apple (Malus spp.), peach (Prunus spp.), and strawberry (Fragaria spp.). These resources, including expressed sequence tags, bacterial artificial chromosome libraries, physical and genetic maps, and molecular markers, combined with genetic transformation protocols and bioinformatics tools, have rendered various rosaceous crops highly amenable to comparative and functional genomics studies. This report serves as a synopsis of the resources and initiatives of the Rosaceae community, recent developments in Rosaceae genomics, and plans to apply newly accumulated knowledge and resources toward breeding and crop improvement. PMID:18487361

  2. Allergy to Rosaceae fruits without related pollinosis

    NARCIS (Netherlands)

    Fernández-Rivas, M.; van Ree, R.; Cuevas, M.

    1997-01-01

    BACKGROUND: Rosaceae fruit allergy is frequently associated with birch pollinosis in Central and Northern Europe and with grass pollen allergy in Central Spain. The main cross-reactive structures involved for birch pollinosis are Bet v 1 and profilin, and for grass pollinosis they are profilin and

  3. Demodicidosis or rosacea: what did we treat?

    NARCIS (Netherlands)

    Hoekzema, R.; Hulsebosch, H. J.; Bos, J. D.

    1995-01-01

    We report a 75-year-old man with a fulminant rosacea-like eruption, suggestive of demodicidosis. Multiple Demodex folliculorum mites were found in facial scales and pustules and, on histological examination, in the infundibulum of pilosebaceous follicles and in the dermis. Intradermal mites were

  4. Hypothesis of demodicidosis rosacea flushing etiopathogenesis.

    Science.gov (United States)

    Robledo, Mary Ann; Orduz, Mariana

    2015-04-01

    Most of the patients with erythematotelangiectatic rosacea are characterized by flushing, oedema and telangiectasia. The etiopathogenesis of the flushing in rosacea patients is unknown. Clinically the flushing in rosacea is similar to the "Asian flushing syndrome". Most Asians have an overactive alcohol dehydrogenase (ADH) that tends to break down alcohol into acetaldehyde faster. People with "Asians flushing syndrome" have a genetic disorder with the Aldehyde Dehydrogenase 2(∗)2 (ALDH2(∗)2) allele. This is the reason why they do not metabolize very well the acetaldehyde that comes from the alcohol, which means that acetaldehyde takes much longer to clear from their blood. ALDH2 enzyme is primarily responsible for oxidation of acetaldehyde derived from ethanol metabolism, as well as oxidation of various other endogenous and exogenous aldehydes. Acetaldehyde produces the vasodilatation in the "Asian flushing syndrome". The antibodies against the GroEl chaperonin protein, a 62-kDa heat shock protein were found in the Bacillus oleronius isolated from Demodex mites, in rosacea patients. The GroEl chaperonin protein is a protein that plays a key role in normal folding of ALDH2. If the GroEl chaperonin antibodies found in patients with rosacea, cross react with the human GroEl chaperonin protein, they will not fold normally the ALDH2, and then the enzyme will not metabolize the acetaldehyde. Many of the patients with rosacea have a concomitant infection with Helicobacter pylori in their stomach. The H.pylori produces high amounts of acetaldehyde, which comes from their metabolism of ethanol or carbohydrates. As a result, high amounts of acetaldehyde will circulate for longer time in the blood, until the liver CYP2E1(p450) enzyme system finally metabilizes the acetaldehyde, during that period of time the patients will experience a flushing as well as the people with the "Asian flushing syndrome" suffer when they drink ethanol. To prove the hypothesis it is necessary

  5. [Rosacea: New data for better care].

    Science.gov (United States)

    Cribier, B

    In the last 10 years, numerous studies have been published that throw new light on rosacea, in all areas of the disease. This overview summarises all the key developments, based on the indexed bibliography appearing in Medline between 2007 and 2017. Recent epidemiological data show that the prevalence of the disease is doubtless greater than estimated hitherto (more than 10% of adults in some countries) and that we should not overlook rosacea in subjects with skin phototypes V or VI, a condition that exists on all continents. A new classification of rosacea by phenotype comprising major and minor signs has been put forward; it provides a more rational approach to suitable management based upon symptoms, the severity of which may be graded into 5 classes. The treatments with the best-demonstrated efficacy (updated Cochrane study) are topical metronidazole, azelaic acid and ivermectin, and oral doxycycline; isotretinoin is effective against resistant forms but is off-label. In ocular rosacea, the reference treatment is doxycycline in combination with topical therapy of the eyelids. The physiopathology is complex and involves several factors: vascular (vasodilatation, vascular growth factors), neurovascular (hypersensitivity, neuropathic pain, neuropeptides), infectious (Demodex folliculorum and its microbiota) and inflammatory (abnormal production of pro-inflammatory peptides of the innate immune system). In addition, there is a genetic predisposition as demonstrated by the weight of familial history and comparison of homozygous and heterozygous twins. There is also activation of several genes involved in immunity, inflammation and lipid metabolism; the theory of hydrolipid film anomalies has been posited once more. There has thus been a tremendous leap forward in the field of rosacea research, with therapeutic progress and improved understanding of the underlying mechanisms, which should enable the future development of more targeted treatments as well as global

  6. Clinical evaluation of 30 patients with localized nasal rosacea.

    Science.gov (United States)

    Lee, Woo Jin; Lee, Ye Jin; Won, Chong Hyun; Chang, Sung Eun; Choi, Jee Ho; Lee, Mi Woo

    2016-02-01

    The clinical features of localized nasal rosacea have not been described in detail. This study was designed to analyze the subtypes and severity of localized nasal rosacea. Our present study included 30 patients with localized nasal rosacea. The erythematotelangiectatic subtype (13/30, 43.3%) was the most common type, followed by the phymatous subtype (9/30, 30%). The duration of rosacea was shorter and the severity of localized nasal rosacea was lower in the erythematotelangiectatic subtype cases compared with the patients with mixed or phymatous subtypes. Almost all of the papulopustular eruptions or phymatous lesions were associated with erythematotelangiectatic lesions. These findings suggest that the erythematotelangiectatic subtype may be considered the initial phase of localized nasal rosacea. © 2015 Japanese Dermatological Association.

  7. Rosacea and exposure to tandoor heat: Is there an association?

    Science.gov (United States)

    Ozkol, Hatice U; Calka, Omer; Akdeniz, Necmettin; Baskan, Elife; Ozkol, Halil

    2015-12-01

    Particularly in eastern and southeastern regions of Turkey, women use tandoor ovens to bake bread and as a result are exposed to excessive heat. Exposure to heat for long periods may lead to the initiation or exacerbation of rosacea. The aim of this study was to investigate whether there is a relationship between exposure to heat from a tandoor and rosacea. A total of 350 female patients with various dermatological diseases were included in this study. These patients were divided into two groups comprising a control group and a group of tandoor users. Subjects in both the control and tandoor-user groups were screened to identify clinical and other characteristics, and symptoms and findings of rosacea and other dermatological disorders. The frequency of rosacea was significantly (P rosacea, were also significantly (P rosacea. Further studies including higher numbers of patients are required to confirm our results. © 2015 The International Society of Dermatology.

  8. Potential role of microorganisms in the pathogenesis of rosacea.

    Science.gov (United States)

    Holmes, Anna D

    2013-12-01

    Rosacea is a skin condition of abnormal inflammation and vascular dysfunction. The active contribution of a microbial agent in the development or progression of rosacea continues to be debated. Research supports the presence of commensal Demodex folliculorum mites at increased density in the skin and associates Helicobacter pylori infection of the gut with rosacea. Fewer studies implicate Staphylococcus epidermidis, Chlamydophila pneumoniae, and the Demodex-associated bacteria Bacillus oleronius. No research, however, provides a mechanism by which colonization by a microorganism translates to manifestation of the condition. Prevailing and emerging principles in the biology of the microbiome and the pathophysiology of rosacea may help to reconcile these lingering questions. Here the microorganisms implicated in rosacea are reviewed and the reaction of the microbiome to inflammation and to changes in microenvironments and macroenvironments are discussed to explain potential roles for microorganisms in rosacea pathophysiology. Copyright © 2013 American Academy of Dermatology, Inc. Published by Mosby, Inc. All rights reserved.

  9. Classification of Omalisidae based on molecular data and morphology, with description of Paradrilinae subfam. nov. (Coleoptera: Elateroidea).

    Science.gov (United States)

    Kundrata, Robin; Baena, Manuel; Bocak, Ladislav

    2015-02-04

    Omalisidae, a species-poor family of elateroid beetles, are distributed mostly in the Mediterranean region. The morphology of females is modified due to neotenic development and the males share some traits with other neotenic lineages in Elateroidea, namely Drilini (Elateridae: Agrypninae) and Lyropaeinae (Lycidae). A molecular phylogeny was inferred from six omalisid species representing four genera and the previously published dataset of Elateroidea. The DNA based phylogeny suggests that small-bodied males, reduced pronotal carinae and missing elytral costae evolved independently in multiple elateroid lineages. The limits of Omalisidae are redefined and seven genera, i.e., Omalisus Geoffroy, 1762, Phaeopterus Costa, 1857, Thilmanus Gemminger, 1869, Euanoma Reitter, 1889, Pseudeuanoma Pic, 1901, Paradrilus Kiesenwetter, 1865 and Cimbrion Kazantsev, 2010, are currently placed in the family. Thilmaninae Kazantsev, 2005 and Paradrilus Kiesenwetter, 1865 are transferred from Drilini (Elateridae: Agrypninae) to Omalisidae and the Paradrilinae subfam. nov. is proposed. Paradrilus differs from other Omalisidae in prolonged cranium, wide robust prosternum with two apical processes and absent sharp edge of the pronotum. The morphology of Paradrilus is described in detail, illustrated and all taxa currently classified in Omalisidae are listed. 

  10. Rosacea patients seeking advice: Qualitative analysis of patients' posts on a rosacea support forum.

    Science.gov (United States)

    Alinia, Hossein; Moradi Tuchayi, Sara; Farhangian, Michael E; Huang, Karen E; Taylor, Sarah L; Kuo, Sandy; Richardson, Irma; Feldman, Steven R

    2016-01-01

    Social media have become outlets for patients to voice opinions and ask questions. Since suffering from rosacea is an isolating experience and the disease is poorly understood, patients use social media to expand their knowledge about the condition. To understand rosacea patients' online health information seeking habits to obtain a better insight of their educational needs. Ten percent of posts in online rosacea forum composed of 3350 members and 27 051 posts, discussing patient viewpoints and concern, selected by stratified random sampling. Three hundred and nine queries were directly categorized to patients "seeking advice" by two investigators and qualitatively analyzed. Patients primarily sought advice about treatments (n = 155, 50.1%), triggers (n = 53, 17.1%), diet (n = 48, 15.5%), skin care (n = 37, 11.9%) and special presentations of the disease (n = 22, 7.1%). Questions frequently pertained to adverse effects, efficacy and target of therapy (78, 49, 30 posts, respectively). Proactively providing reliable resources and comprehensive explanations on treatments, triggers, diet and skin care could be helpful in reducing patients' confusion about rosacea and enhancing rosacea patient-physician relationships.

  11. Rosacea: part I. Introduction, categorization, histology, pathogenesis, and risk factors.

    Science.gov (United States)

    Two, Aimee M; Wu, Wiggin; Gallo, Richard L; Hata, Tissa R

    2015-05-01

    Rosacea is a chronic inflammatory skin condition that affects approximately 16 million Americans. Four distinct subtypes of rosacea have been recognized, with transient and nontransient facial flushing, telangiectasia, and inflammatory papules and pustules being among the more commonly recognized features. Although the exact pathogenesis of rosacea is unknown, dysregulation of the innate immune system, overgrowth of commensal skin organisms, and aberrant neurovascular signaling may all have a role in promoting the clinical features of rosacea. Copyright © 2014 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  12. Rosacea and Chronic Rhinosinusitis: A Case-Controlled Study

    Science.gov (United States)

    Al-Balbeesi, Amal O.

    2014-01-01

    Objective To determine the relationship between rosacea, chronic rhinosinusitis (CRS), and the clinical presentation of rosacea. Subjects and Method Twenty-eight female Saudi patients diagnosed with rosacea at the Dermatology Clinic, King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia, between September 2011 and September 2012 and 20 age- and sex-matched control patients were included in the study. Paranasal sinus X-rays and assessments of the serum concentration of IgE (ImmunoCAP test; Phadia Laboratory Systems) were performed in both groups. Result The rosacea patients had significantly more radiological evidence of CRS than the patients without rosacea [19 (67.9%) vs. 4 (20%), p = 0.003]. The median IgE concentration was similar in both groups (225.4 vs. 223.1 kU/l). Nine rosacea patients (32.1%) without radiological evidence of CRS did not have a significantly different median concentration of IgE compared with those who had radiological evidence of CRS (190.5 vs. 111.5 kU/l, p = 0.859). Erythematotelangiectatic severity was significantly associated with CRS (p = 0.038). Serum IgE did not correlate with the severity of the facial condition. Conclusion Patients with rosacea and CRS manifested severe erythematotelangiectatic rosacea. There was enough evidence to suggest an association between rosacea and CRS. Clinical and radiological assessments of the paranasal sinuses are recommended. PMID:25060422

  13. Obesity and risk for incident rosacea in US women.

    Science.gov (United States)

    Li, Suyun; Cho, Eunyoung; Drucker, Aaron M; Qureshi, Abrar A; Li, Wen-Qing

    2017-12-01

    The relationship between obesity and rosacea is poorly understood. To conduct the first cohort study to determine the association between obesity and risk for incident rosacea. A total of 89,886 participants were included from the Nurses' Health Study II (1991-2005). Information on history of clinician-diagnosed rosacea and year of diagnosis was collected in 2005. Information on obesity was collected biennially during follow-up. Over 14 years of follow-up, we identified 5249 incident cases of rosacea. The risk for rosacea was elevated for those with increased body mass index (BMI, P trend  rosacea was 1.48 (95% confidence interval 1.33-1.64) for BMI ≥ 35.0. There was a trend toward an increased risk for rosacea among participants who had gained weight after age 18 years (P trend  rosacea associated with higher waist circumference and hip circumference (P trend  rosacea. Copyright © 2017 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  14. The pharmacologic therapy of rosacea: a paradigm shift in progress.

    Science.gov (United States)

    Bikowski, Joseph B

    2005-03-01

    A number of topical and systemic pharmacologic therapies, some of which remain investigational, have been used to treat rosacea. The pathophysiology of rosacea appears to be inflammatory, and most of the interventions modulate the inflammatory process in some way. Topical agents include various formulations of sodium sulfacetamide and sulfur, metronidazole, azelaic acid, and benzoyl peroxide/clindamycin. Oral agents include antibiotics in conventional and subantimicrobial doses. A paradigm shift in progress in the management of rosacea encompasses the use of these and other agents either alone or, increasingly, in different combinations, based on the subtype of rosacea.

  15. Neurovascular and Neuroimmune Aspects in the Pathophysiology of Rosacea

    Science.gov (United States)

    Schwab, Verena D.; Sulk, Mathias; Seeliger, Stephan; Nowak, Pawel; Aubert, Jerome; Mess, Christian; Rivier, Michel; Carlavan, Isabelle; Rossio, Patricia; Metze, Dieter; Buddenkotte, Jörg; Cevikbas, Ferda; Voegel, Johannes J.; Steinhoff, Martin

    2013-01-01

    Rosacea is a common skin disease with a high impact on quality of life. Characterized by erythema, edema, burning pain, immune infiltration, and facial skin fibrosis, rosacea has all the characteristics of neurogenic inflammation, a condition induced by sensory nerves via antidromically released neuromediators. To investigate the hypothesis of a central role of neural interactions in the pathophysiology, we analyzed molecular and morphological characteristics in the different subtypes of rosacea by immunohistochemistry, double immunofluorescence, morphometry, real-time PCR, and gene array analysis, and compared the findings with those for lupus erythematosus or healthy skin. Our results showed significantly dilated blood and lymphatic vessels. Signs of angiogenesis were only evident in phymatous rosacea. The number of mast cells and fibroblasts was increased in rosacea, already in subtypes in which fibrosis is not clinically apparent, indicating early activation. Sensory nerves were closely associated with blood vessels and mast cells, and were increased in erythematous rosacea. Gene array studies and qRT-PCR confirmed upregulation of genes involved in vasoregulation and neurogenic inflammation. Thus, dysregulation of mediators and receptors implicated in neurovascular and neuroimmune communication may be crucial at early stages of rosacea. Drugs that function on neurovascular and/or neuroimmune communication may be beneficial for the treatment of rosacea. PMID:22076328

  16. Rosacea – new data on pathogenesis and treatment

    Directory of Open Access Journals (Sweden)

    Waldemar Placek

    2016-10-01

    Full Text Available Rosacea is a common dermatosis more prevalent in females, significantly impairing quality of life. Currently erythematous, papulo-pustular and phymatous subtypes are distinguished, which do not necessarily represent consecutive stages. Recent findings indicate in the pathogenesis of rosacea the role of the impaired innate immune system and vascular abnormalities. Additionally, the role of genetic and infectious factors is suggested. The therapy of rosacea is directed not only against inflammatory changes but also anti-parasitic. In topical treatment the most commonly used are metronidazole and azelaic acid. Other drugs are topical antibiotics, antiparasitic agents such as ivermectin and preparations directly influencing erythema. In more severe cases tetracyclines or macrolides are used, and in the most severe cases, isotretinoine. As ultraviolet light is a recognized trigger for rosacea, regular sunscreen use is necessary. Also, proper diet is indicated. Presently in the treatment of rosacea more and more techniques using different lights are employed.

  17. [IMPACT OF OPISTHORCHIS INVASION ON THE COURSE OF A SKIN PROCESS IN PATIENTS WITH ROSACEA].

    Science.gov (United States)

    Aripova, M L; Khardikova, S A

    2015-01-01

    The authors give the data-and results of their investigations of 47 patents with rosacea concurrent with chronic opisthorchiasis (Group 1) and 40 patients with rosacea without opisthorhiasis (Group 2): It is found that the severer clinical manifestations of rosacea are, the lower the quality of life is in patients. The patients with rosacea concurrent with chronic opisthorchiasis were found to have severe clinical forms. Rosacea diagnostic rating scores was 1.1-fold higher than in the patients without helminthiasis, suggesting a severer course. Quality-of-life dissatisfaction in patients with rosacea concurrent with chronic opisthorchiasis was significantly higher than in those with rosacea only.

  18. A study on Demodex folliculorum in rosacea.

    Science.gov (United States)

    Abd-El-Al, A M; Bayoumy, A M; Abou Salem, E A

    1997-04-01

    A random sample of 16 female patients suffering from papulopustular rosacea (PPR) as well as (16) normal female healthy subjects as control group were adopted in this study to assess of Demodex folliculorum pathogenesis. It was done through determination of mite density using a standard skin surface biopsy 10.5 cm2 from different designated 6 areas on the face, and scanning electron microscopic study (SEM) as well as total IgE estimation. A trial of treatment using Crotamiton 10% cream with special program was also attempted. All subjects ranged between 35-55 years old. All patients with rosacea and 15 of the control group i.e. 75.93% were found to harbour mites. The mean mite counts by site distribution were 28.6 & 6.9 on the cheeks, followed by 14.5 & 3.0 on the forehead and lastly 6.8 & 0.8 on the chin in PPR and control groups respectively. The total mean mite count in patients was 49.9 initially and 7.9 after treatment. In the control group it was 10.7 & 10.6 respectively. The mean total IgE was 169.4 & 168.4 and 96.3 & 98.4 in PPR and control groups respectively Light and scanning electron microscopy revealed that all mites were pointing in one direction. Some of them were containing bacteria inside their gut and on their skin. After treatment 3 cases (18.75%) were completely cured, 10 cases (62.5%) gave moderate response while 3 cases (18.75) have no response. In conclusion, this study supports the pathogenic role of D. folliculorum in rosacea.

  19. Management of cutaneous rosacea: emphasis on new medical therapies.

    Science.gov (United States)

    Del Rosso, James Q

    2014-10-01

    Over the past decade, both basic science and clinical research have provided new information on pathophysiology and therapy that has led to advances in the management of rosacea. As rosacea is a very common facial skin disorder in adults of both genders and essentially all races and ethnicities, these advances can provide therapeutic benefit to many affected individuals around the world. This article provides a collective review of more recent information on the pathophysiology and clinical manifestations of rosacea, and discusses individual medical therapies based on PubMed literature searches on 'rosacea', 'rosacea therapies' and each therapy that are included in this article. The perspectives of the author on management of rosacea are also included. Newer therapies and treatment concepts received greater emphasis. Management of cutaneous rosacea involves patient education, integration of proper skin care, differentiation of visible manifestations and symptoms, selecting therapies that correlate with the manifestations that are to be treated, setting realistic patient expectations on anticipated degree and time course of response and designing an overall management plan that addresses needs of the individual patient. In many cases, a combination approach is needed, and due to the chronicity of the disease long-term management is often warranted.

  20. Clinical, Cellular, and Molecular Aspects in the Pathophysiology of Rosacea

    Science.gov (United States)

    Steinhoff, Martin; Buddenkotte, Jörg; Aubert, Jerome; Sulk, Mathias; Novak, Pawel; Schwab, Verena D.; Mess, Christian; Cevikbas, Ferda; Rivier, Michel; Carlavan, Isabelle; Déret, Sophie; Rosignoli, Carine; Metze, Dieter; Luger, Thomas A.; Voegel, Johannes J.

    2013-01-01

    Rosacea is a chronic inflammatory skin disease of unknown etiology. Although described centuries ago, the pathophysiology of this disease is still poorly understood. Epidemiological studies indicate a genetic component, but a rosacea gene has not been identified yet. Four subtypes and several variants of rosacea have been described. It is still unclear whether these subtypes represent a “developmental march” of different stages or are merely part of a syndrome that develops independently but overlaps clinically. Clinical and histopathological characteristics of rosacea make it a fascinating “human disease model” for learning about the connection between the cutaneous vascular, nervous, and immune systems. Innate immune mechanisms and dysregulation of the neurovascular system are involved in rosacea initiation and perpetuation, although the complex network of primary induction and secondary reaction of neuroimmune communication is still unclear. Later, rosacea may result in fibrotic facial changes, suggesting a strong connection between chronic inflammatory processes and skin fibrosis development. This review highlights recent molecular (gene array) and cellular findings and aims to integrate the different body defense mechanisms into a modern concept of rosacea pathophysiology. PMID:22076321

  1. Cigarette Smoking and Risk of Incident Rosacea in Women.

    Science.gov (United States)

    Li, Suyun; Cho, Eunyoung; Drucker, Aaron M; Qureshi, Abrar A; Li, Wen-Qing

    2017-07-01

    The relationship between smoking and rosacea is poorly understood. We aimed to conduct the first cohort study to determine the association between smoking and risk of incident rosacea. We included 95,809 women from Nurses' Health Study II (1991-2005). Information on smoking was collected biennially during follow-up. Information on history of clinician-diagnosed rosacea and year of diagnosis was collected in 2005. We used Cox proportional hazards models to estimate age- and multivariable-adjusted hazard ratios and 95% confidence intervals for the association between different measures of smoking and risk of rosacea. During follow-up, we identified 5,462 incident cases of rosacea. Compared with never smoking, we observed an increased risk of rosacea associated with past smoking (multivariable-adjusted hazard ratio = 1.09, 95% confidence interval: 1.03, 1.16) but a decreased risk associated with current smoking (hazard ratio = 0.65, 95% confidence interval: 0.58, 0.72). We further found that increasing pack-years of smoking was associated with an elevated risk of rosacea among past smokers (P for trend = 0.003) and with a decreased risk of rosacea among current smokers (P for trend rosacea was significantly increased within 3-9 years since smoking cessation, and the significant association persisted among past smokers who had quit over 30 years before. © The Author 2017. Published by Oxford University Press on behalf of the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  2. The significance of Demodex folliculorum density in rosacea.

    Science.gov (United States)

    Erbağci, Z; Ozgöztaşi, O

    1998-06-01

    Demodex folliculorum has been reported in rosacea in a number of clinical studies. As the Demodex mite is also present in many healthy individuals, it has been suggested that the mite may have a pathogenic role only when it is present in high densities. Moreover, some authors have proposed that a mite density above 5/cm2 may be a criterion for the diagnosis of inflammatory rosacea. In this study, the possible role of D. folliculorum and the importance of mite density in rosacea were investigated using a skin surface biopsy technique. Thirty-eight patients with rosacea and 38 age-and-sex-matched healthy subjects entered the study. With the skin surface biopsy technique, we obtained samples from three facial sites. We then determined the mite positivities, the mean mite counts in both study groups, the mean mite densities at each facial site and in the rosacea subgroups, and the mite densities above 5/cm2. The mean mite count in the rosacea group (6,684) was significantly higher than that in controls (2,868; p rosacea patients and five normal subjects had mite densities over 5/cm2; the difference was not statistically significant (p > 0.05). Rosacea is a disease of multifactorial origin, and individual properties may modify the severity of the inflammatory response to Demodex. We suggest that a certain mite density is not an appropriate criterion in the diagnosis of the disease; nevertheless, large numbers of D. folliculorum may have an important role in the pathogenesis of rosacea, together with other triggering factors.

  3. An emerging treatment: Topical ivermectin for papulopustular rosacea.

    Science.gov (United States)

    Abokwidir, Manal; Fleischer, Alan B

    2015-01-01

    Ivermectin shows broad-spectrum anti-parasitic activity. It kills the Demodex mites that reside in the pilosebaceous units of patients with papulopustular rosacea. Ivermectin also has anti-inflammatory effects, it decreases cellular and humoral immune responses. Inflammatory mechanisms appear to play a dominant role in the development of rosacea inflammatory lesions. Additionally, there is some evidence that it shows antimicrobial activity against Myobacterium tuberculosis and Chlamydia trachomatis. The recent clinical studies of ivermectin on rosacea show that it was superior to vehicle in reducing inflammatory lesion counts, and its tolerability was excellent. Ivermectin displays antimicrobial, antiparasitic, antibacterial, and anti-inflammatory activities.

  4. [Rosacea-like demodicidosis and chronic blepharitis].

    Science.gov (United States)

    Anane, S; Mokni, M; Beltaief, O

    2011-01-01

    Demodicidosis is a parasitic skin disease caused by the follicle mites Demodex sp. In this article, we present a case of rosacea-like demodicidosis, discuss the clinical features of Demodex infestation in man and review their diagnosis and therapeutic modalities. A 37-year-old woman presented in our department with chronic blepharitis present for one year. On physical examination, the patient presented blepharitis and papulovesicles with fine scaling limited to the face. There was no telangectasia. The patient did not report flushing episodes or any kind of photosensitivity. A diagnosis of rosacea-like demodicidosis and Demodex blepharitis was based on the presence of numerous Demodex folliculorum in the eyelashes and scrapings of skin lesions. The patient was put on topic and oral metronidazole for 2 months and on yellow mercury ointment for 15 days. The course involved disappearance of the facial mites and complete remission without recurrence. Screening for Demodex sp is essential to establish the correct diagnosis and ensure suitable treatment. Copyright © 2010. Published by Elsevier Masson SAS.

  5. Prevalence of rosacea in an Estonian working population using a standard classification.

    Science.gov (United States)

    Abram, Kristi; Silm, Helgi; Oona, Marje

    2010-05-01

    Data about the prevalence of rosacea are scarce. The aim of this study was to evaluate the prevalence rate of rosacea according to the American National Rosacea Society Expert Committee (NRSEC) classification. A cross-sectional study of 348 subjects randomly selected from a working population >or= 30 years of age was performed. All subjects completed a questionnaire. Skin status was examined according to NRSEC criteria. Of the 348 subjects, 78 (22%) had one or more primary features of rosacea. The most common features were erythema (21%) and telangiectasia (18%). Of the subjects with rosacea, 78% had erythematotelangiectatic rosacea and 22% had papulopustular rosacea. Fifteen percent of the study subjects had experienced frequent episodes of flushing without permanent features of rosacea. No significant gender-related differences were found between study groups. In conclusion, according to the NRSEC, rosacea is a more common skin condition over the age of 30 years than previously thought.

  6. Rosacea: Molecular Mechanisms and Management of a Chronic Cutaneous Inflammatory Condition

    Directory of Open Access Journals (Sweden)

    Yu Ri Woo

    2016-09-01

    Full Text Available Rosacea is a chronic cutaneous inflammatory disease that affects the facial skin. Clinically, rosacea can be categorized into papulopustular, erythematotelangiectatic, ocular, and phymatous rosacea. However, the phenotypic presentations of rosacea are more heterogeneous. Although the pathophysiology of rosacea remains to be elucidated, immunologic alterations and neurovascular dysregulation are thought to have important roles in initiating and strengthening the clinical manifestations of rosacea. In this article, we present the possible molecular mechanisms of rosacea based on recent laboratory and clinical studies. We describe the genetic predisposition for rosacea along with its associated diseases, triggering factors, and suggested management options in detail based on the underlying molecular biology. Understanding the molecular pathomechanisms of rosacea will likely aid toward better comprehending its complex pathogenesis.

  7. Clustering of autoimmune diseases in patients with rosacea

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Hansen, Peter Riis; Gislason, Gunnar Hilmar

    2016-01-01

    BACKGROUND: Rosacea is a common inflammatory skin condition that shares genetic risk loci with autoimmune diseases such as type 1 diabetes mellitus (T1DM) and celiac disease. A recent genomewide association study identified 90 genetic regions associated with T1DM, celiac disease, multiple sclerosis......, and/or rheumatoid arthritis, respectively. However, a possible association with rosacea was not investigated. OBJECTIVE: We evaluated the association between rosacea and T1DM, celiac disease, multiple sclerosis, and rheumatoid arthritis, respectively. METHODS: We performed a population-based case...... and socioeconomic status, patients with rosacea had significantly increased ORs for T1DM (OR 2.59, 95% CI 1.41-4.73), celiac disease (OR 2.03, 95% CI 1.35-3.07), multiple sclerosis (OR 1.65, 95% CI 1.20-2.28), and rheumatoid arthritis (OR 2.14, 95% CI 1.82-2.52). The association was mainly observed in women...

  8. [Demodex folliculorum and rosacea: experimental and immunological studies].

    Science.gov (United States)

    Grosshans, E; Dungler, T; Kien, T T; Kremer, M

    1980-09-15

    When the immunological mechanism of the demodectic mange is well-known in dogs, few things are known about the role of Demodex mites in the pathogenesis of rosacea: the purpose of this study is the research of immunological reactions against Demodex antigens in 31 patients (24 papulopustular rosaceas and 7 granulomatous demodectic rosaceas histologically ascertained). Cultures or survival in vitro of human Demodex mites could not be obtained; therefore demodectic cysts of diseased goats (Demodex caprae) were gathered and soluble antigens were extracted by lyophilization. By different immunoserological methods, Demodex specific antibodies could be demonstrated in sera of rosacea (22%), of diseased goats and of rabbits sensitized with small amounts of demodectic antigen. Frequently cross-reactions were observed.

  9. Other Skin Conditions Often Present in Rosacea Patients

    Science.gov (United States)

    ... He noted that, while the incidence of skin cancer and seborrheic dermatitis is relatively high among rosacea patients answering the survey, the number who had ever experienced acne – if adolescence is ...

  10. RosBREED: Enabling marker-assisted breeding in Rosaceae

    NARCIS (Netherlands)

    Iezzoni, A.F.; Weebadde, C.; Luby, J.; Yue, C.; Weg, van de W.E.; Fazio, G.; Main, D.; Peace, C.P.; Bassil, N.V.; McFerson, J.

    2010-01-01

    Genomics research has not yet been translated into routine practical application in breeding Rosaceae fruit crops (peach, apple, strawberry, cherry, apricot, pear, raspberry, etc.). Through dedicated efforts of many researchers worldwide, a wealth of genomics resources has accumulated, including EST

  11. Psychological disorders associated with rosacea: Analysis of unscripted comments

    Directory of Open Access Journals (Sweden)

    Leah A. Cardwell

    2015-07-01

    Full Text Available Background: Conditions affecting the face are particularly prone to causing psychological comorbidity; patients may be reluctant to inform their physician about their psychological distress. Unscripted comments could provide novel insight regarding the psychological impact of rosacea. Aim: To assess psychologically distressing aspects of rosacea reported in an informal medical setting. Methods: Random sample of 10% of 27,051 posts analyzed, 446 comments addressed psychological effects of rosacea. Comments analyzed for symptoms of depression, anxiety, low confidence/self-esteem, and aspects of rosacea which cause distress, including symptoms, lifestyle change and difficulty with treatments. Brand names were changed to generic equivalent. Results: Symptoms of depression (n = 44 and the desire to end life (n = 6 were mentioned, but no comments expounded on any suicide plan. Anxiousness (n = 7 and negative impact on confidence/self-esteem (n = 5 were mentioned. Symptoms, or clinical manifestations (n = 29, were the most frequently mentioned distress factor, followed by lifestyle change (n = 20. Patients also voiced difficulty with treatments (n = 15. Limitations: Online forums may provide patient perceptions that patients would not share with a doctor, but the sample may not be representative of all rosacea patients. Conclusions: Inquiring about psychological impact of rosacea might be helpful in identifying patients who would benefit from supportive psychological measures.

  12. Demodex mites in acne rosacea: reflectance confocal microscopic study.

    Science.gov (United States)

    Turgut Erdemir, Asli; Gurel, Mehmet Salih; Koku Aksu, Ayse Esra; Falay, Tugba; Inan Yuksel, Esma; Sarikaya, Ebru

    2017-05-01

    Demodex mite density is emphasised in the aetiopathogenesis of acne rosacea. Reflectance confocal microscopy (RCM) has been shown to be a good method for determining demodex mite density. The objective was to determine demodex mite density using RCM in acne rosacea patients and compare them with controls. In all, 30 papulopustular rosacea (PPR) and 30 erythematotelangiectatic rosacea (ETR) totally 60 acne rosacea patients and 40 controls, were enrolled in the study. The right cheek was selected for imaging and RCM was used for scanning. Ten images of 1000 × 1000 μm (total 10 mm2 ) area were scanned from adjacent areas. The numbers of follicles, infested follicles and mites were counted. The mean numbers of mites per follicle and infested follicles were calculated and compared in the patients and control groups. The mean number of mites was 44.30 ± 23.22 in PPR, 14.57 ± 15.86 in ETR and 3.55 ± 6.48 in the control group (P Demodex mite density was markedly increased in both ETR and PPR patients. It is believed that the presence of demodex mites plays an important role in rosacea aetiopathogenesis. Demodex mite treatment may reduce the severity of the disease and slow its progressive nature. © 2016 The Australasian College of Dermatologists.

  13. Retrospective analysis of the association between Demodex infestation and rosacea.

    Science.gov (United States)

    Zhao, Ya E; Wu, Li Ping; Peng, Yan; Cheng, Hui

    2010-08-01

    To explore the association between Demodex infestation and rosacea and the pathogenesis of demodicosis rosacea by means of a meta-analysis. Electronic searches of the ISI Web of Knowledge (Science Citation Index, ISTP [Index to Scientific & Technical Proceedings], Journal Citation Reports, BP [BIOSIS Preview], INSPEC [Ination Service in Physics, Electronics Technology, and Computer and Control], and DII [Derwent Innovation Index]), MEDLINE, and CNKI (China National Knowledge Infrastructure) databases (January 1, 1950, to December 31, 2009). We also performed hand searches of reference lists and conference proceedings. Predefined selection criteria were applied to all published case-control studies that analyzed the association between Demodex infestation and rosacea. Two of us independently extracted data from the included studies. For disputed articles, a third party mediated whether to include the study. Forty-eight English- and Chinese-language articles, which covered 10 different countries and 28 527 participants, were eligible. The pooled odds ratio in random-effects models is 7.57 (95% confidence interval, 5.39-10.62). Stability is good according to sensitivity analysis. The fail-safe number is 18 456 in the quantitative analysis of publication bias. A significant association exists between Demodex infestation and the development of rosacea. Demodex infestation is a vital risk factor for rosacea according to the time-to-event relationship, and the degree of infestation played a more important role than did the mite infestation rate in the development of rosacea.

  14. Rosacea and its association with enteral microbiota in Korean females.

    Science.gov (United States)

    Nam, Jae-Hui; Yun, Yeojun; Kim, Han-Saem; Kim, Han-Na; Jung, Ho Joo; Chang, Yoosoo; Ryu, Seungho; Shin, Hocheol; Kim, Hyung-Lae; Kim, Won-Serk

    2017-06-21

    Rosacea is a chronic inflammatory dermatosis affecting the face and eyes. An association between systemic comorbidities and rosacea has been reported, but the link to enteral microbiota is uncertain. We aimed to investigate the link between rosacea and enteral microbiota. A cross-sectional study was performed in a sample of Korean women who participated in a health check-up programme at the Kangbuk Samsung Hospital Health Screening Center between 23 June 2014 and 5 September 2014. The gut microbiome was evaluated by 16S rRNA gene and metagenome sequence analyses. A total of 12 rosacea patients and 251 controls were enrolled. We identified links between rosacea and several changes in gut microbiota: reduced abundance of Peptococcaceae family unknown genus, Methanobrevibacter (genus), Slackia (genus), Coprobacillus (genus), Citrobacter (genus), and Desulfovibrio (genus), and increased abundance of Acidaminococcus (genus), Megasphaera (genus), and Lactobacillales order unknown family unknown genus. A link between rosacea and enteral microbiota was observed in this metagenomic study. A large and elaborate study is needed to confirm these findings and to elucidate the mechanisms involved. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  15. Quantification of Demodex folliculorum by PCR in rosacea and its relationship to skin innate immune activation.

    Science.gov (United States)

    Casas, Christiane; Paul, Carle; Lahfa, Morad; Livideanu, Bulai; Lejeune, Ophélie; Alvarez-Georges, Sandrine; Saint-Martory, Christine; Degouy, Arnaud; Mengeaud, Valérie; Ginisty, Hervé; Durbise, Elizabeth; Schmitt, Anne M; Redoulès, Daniel

    2012-12-01

    The aim of this study is to quantify D. folliculorum colonisation in rosacea subtypes and age-matched controls and to determine the relationship between D. folliculorum load, rosacea subtype and skin innate immune system activation markers. We set up a multicentre, cross-sectional, prospective study in which 98 adults were included: 50 with facial rosacea, including 18 with erythematotelangiectatic rosacea (ETR), and 32 with papulopustular rosacea (PPR) and 48 age- and sex-matched healthy volunteers. Non-invasive facial samples were taken to quantify D. folliculorum infestation by quantitative PCR and evaluate inflammatory and immune markers. Analysis of the skin samples show that D. folliculorum was detected more frequently in rosacea patients than age-matched controls (96% vs 74%, P rosacea patients than in healthy volunteers. Skin sample analysis showed a higher expression of genes encoding pro-inflammatory cytokines (Il-8, Il-1b, TNF-a) and inflammasome-related genes (NALP-3 and CASP-1) in rosacea, especially PPR. Overexpression of LL-37 and VEGF, as well as CD45RO, MPO and CD163, was observed, indicating broad immune system activation in patients with rosacea. In conclusion, D. folliculorum density is highly increased in patients with rosacea, irrespective of rosacea subtype. There appears to be an inverse relationship between D. folliculorum density and inflammation markers in the skin of rosacea patients, with clear differences between rosacea subtypes. © 2012 John Wiley & Sons A/S.

  16. Mite-related bacterial antigens stimulate inflammatory cells in rosacea.

    Science.gov (United States)

    Lacey, N; Delaney, S; Kavanagh, K; Powell, F C

    2007-09-01

    Patients with papulopustular rosacea have a higher density of Demodex folliculorum mites on their faces than normal subjects but the role, if any, of their mites in initiating inflammation is disputed. Selective antibiotics are effective in reducing the inflammatory changes of papulopustular rosacea, but their mode of action is unknown. To investigate whether a D. folliculorum-related bacterium was capable of expressing antigens that could stimulate an inflammatory immune response in patients with rosacea. A bacterium (Bacillus oleronius) was isolated from a D. folliculorum mite extracted from the face of a patient with papulopustular rosacea, and was investigated further. This bacterium produced antigens capable of stimulating peripheral blood mononuclear cells proliferation in 16 of 22 (73%) patients with rosacea but only five of 17 (29%) control subjects (P = 0.0105). This antigenic preparation was fractionated into 70 subfractions and the proteins in each fraction were visualized by sodium dodecyl sulphate-polyacrylamide gel electrophoresis. Western blot analysis revealed the presence of two antigenic proteins of size 62 and 83 kDa in fractions when probing with sera from patients with rosacea. No immunoreactivity to these proteins was recorded when probing with sera from control patients. Two-dimensional electrophoretic separation was used to isolate these proteins and matrix-assisted laser desorption/ionization time-of-flight analysis was employed to identify the relevant peptides. The 62-kDa immunoreactive protein shared amino acid sequence homology with an enzyme involved in carbohydrate metabolism and signal transduction while the 83-kDa protein was similar to bacterial heat shock proteins. Antigenic proteins related to a bacterium (B. oleronius), isolated from a D. folliculorum mite, have the potential to stimulate an inflammatory response in patients with papulopustular rosacea.

  17. Patients with Rosacea Have Increased Risk of Depression and Anxiety Disorders

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Hansen, Peter Riis; Gislason, Gunnar Hilmar

    2016-01-01

    BACKGROUND: Rosacea is a chronic skin condition that affects self-esteem and quality of life. However, data on depression and anxiety in patients with rosacea are scarce. OBJECTIVE: The aim of this study was to investigate the relationship between rosacea and new-onset depression and anxiety...

  18. Granulomatous rosacea : is it a variant of lupus miliaris disseminatus faciei?

    Directory of Open Access Journals (Sweden)

    Kaur S

    2003-03-01

    Full Text Available Granulomatous rosacea, a subtype of rosacea showing non-caseating epithelioid cell granulomas is difficult to differentiate form lupus miliaris disseminatus faciei. Although appearently similar, the clinical and pathologic features, and the natural course of both are different. The similarities and differentiation of rosacea from lupus miliaris disseminatus faciei is discussed.

  19. Granulomatous rosacea : is it a variant of lupus miliaris disseminatus faciei?

    Directory of Open Access Journals (Sweden)

    Kaur S

    2003-01-01

    Full Text Available Granulomatous rosacea, a subtype of rosacea showing non-caseating epithelioid cell granulomas is difficult to differentiate form lupus miliaris disseminatus faciei. Although appearently similar, the clinical and pathologic features, and the natural course of both are different. The similarities and differentiation of rosacea from lupus miliaris disseminatus faciei is discussed.

  20. The Role of Polyphenols in Rosacea Treatment: A Systematic Review.

    Science.gov (United States)

    Saric, Suzana; Clark, Ashley K; Sivamani, Raja K; Lio, Peter A; Lev-Tov, Hadar A

    2017-12-01

    Various treatment options are available for the management of rosacea symptoms such as facial erythema, telangiectasia, papules and pustules, burning, stinging, and itching. Botanical therapies are commonly used to treat the symptoms. The objective of this review is to evaluate the use of polyphenols in rosacea treatment. PubMed, Embase, Biosis, Web of Knowledge, and Scopus databases were systematically searched for clinical studies evaluating polyphenols in the management of rosacea. Of 814 citations, 6 met the inclusion criteria. The studies evaluated licochalcone (n = 2), silymarin (n = 2), Crysanthellum indicum extract (n = 1), and quassia extract (n = 1). The studies only evaluated topical formations of stated polyphenols. Main results were summarized. There is evidence that polyphenols may be beneficial for the treatment of rosacea symptoms. Polyphenols appear to be most effective at reducing facial erythema and papule and pustule counts. However, studies included have significant methodological limitations and therefore large-scale, randomized, placebo-controlled trials are warranted to further assess the efficacy and safety of polyphenols in the treatment of rosacea.

  1. Oxymetazoline hydrochloride cream for facial erythema associated with rosacea.

    Science.gov (United States)

    Patel, Nupur U; Shukla, Shweta; Zaki, Jessica; Feldman, Steven R

    2017-10-01

    Rosacea is a chronic skin condition characterized by transient and persistent erythema of the central face. The symptom of persistent erythema can be particularly frustrating for both patients and physicians as it is difficult to treat. Areas covered: Current treatment options for the treatment of rosacea include metronidazole, azelaic acid, sodium sulfacetamide-sulfur, and brimonidine. Until recently, brimonidine gel was the only option approved specifically for the treatment of facial erythema. However, oxymetazoline hydrochloride 1% cream is a newly FDA approved topical medication for adult rosacea patients. A primarily alpha-1a agonist, oxymetazoline hydrochloride (HCl) is thought to diminish erythema through vasoconstriction. Our paper seeks to evaluate evidence for topical oxymetazoline HCl with respect to its efficacy and safety for its approved indication of treating the persistent erythema associated with rosacea. Expert commentary: While assessment of available clinical trial data indicates that the medication is as effective as other available treatment for controlling rosacea-associated erythema with minimal risk of adverse effects, studies of long-term duration and direct comparison will be necessary to establish its place in treatment guidelines and clinical practice. As further evidence becomes available, the real-world clinical potential of topical oxymetazoline cream will become clearer.

  2. Advances in Understanding and Managing Rosacea: Part 1

    Science.gov (United States)

    2012-01-01

    Rosacea is a common inflammatory facial dermatoses affecting primarily adults with fair skin, although all skin types may be affected. The diagnostic term “rosacea” reflects a spectrum of clinical features with the more common presentations characterized by increased blood flow and vasodilation during disease flares, which accentuate central facial erythema. Inflammatory lesions, usually papules and/or pustules are present in some cases. Variations in magnitude of the associated features of rosacea are noted clinically. Over time, other clinical features emerge or may be further accentuated, such as diffuse facial erythema and telangiectasias, as fixed changes in cutaneous vasculature occur. These later findings account for persistent diffuse facial erythema usually accentuated centrally on the inner cheeks, chin, nose, and/or medial forehead. Some patients may also develop phymatous changes and/or have concurrent ocular rosacea. Augmented innate immune response to certain triggers (often exogenous) and neurovascular/neuroimmune dysregulation appear to be involved early in the pathophysiological sequence of cutaneous rosacea and appear to signal other downstream inflammatory or physiochemical cascades that contribute to the pathogenesis of the disorder. In this article, Part 1 of a two-part series, emphasis is placed upon the correlation of clinical features and underlying pathophysiological changes in the more common presentations of rosacea encountered by the clinician. The importance of this information is that some of these pathogenic mechanisms are modulated by available therapies, and others remain as targets for the development of new therapeutic agents or modalities. PMID:22468176

  3. Hypothyroidism in Patients with Psoriasis or Rosacea: A Large Population Study.

    Science.gov (United States)

    James, Sara M; Hill, Dane E; Feldman, Steven R

    2016-10-15

    Hypothyroidism is a common disease, and there may be a link between hypothyroidism and inflammatory skin disease. The purpose of this study is to assess whether hypothyroidism is more prevalent in psoriasis or rosacea patients. We utilized a large claims-based database to analyze rates of hypothyroidism in patients with psoriasis and rosacea compared to other patients with skin diseases. Participants were patients between 20-64 years of age with ICD-9 diagnosis codes for psoriasis, rosacea, and hypothyroidism. We found that rates of hypothyroidism in rosacea and psoriasis patients were similar to rates of hypothyroidism in those without rosacea or psoriasis.

  4. The potential role of microorganisms in the development of rosacea.

    Science.gov (United States)

    Lazaridou, Elizabeth; Giannopoulou, Christina; Fotiadou, Christina; Vakirlis, Eustratios; Trigoni, Anastasia; Ioannides, Demetris

    2011-01-01

    Rosacea is a chronic cutaneous disorder characterized by centrofacial persisting erythema, telangiectases, papules, pustules, edema, phymas and ocular involvement. Despite being one of the most common skin disorders, its pathogenesis remains unclear and controversial. Although the disease triggering factors are well recognized, the underlying causes of rosacea have not yet been identified. Several different postulates about its pathogenesis can be found in the medical literature. Abnormalities of the pilosebaceous unit, as well as genetic, vascular, inflammatory, environmental and microbial factors have been described. The microorganisms that have been associated include Helicobacter pylori, Demodex folliculorum, Staphylococcus epidermidis, and Chlamydia pneumonia; all the studies have been inconclusive. We review currently available scientific data on the potential pathogenetic role of microorganisms in the development of rosacea. © The Authors • Journal compilation © Blackwell Verlag GmbH, Berlin.

  5. Patients with rosacea have increased risk of dementia

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Hansen, Peter R; Gislason, Gunnar H

    2016-01-01

    OBJECTIVE: Rosacea is a common chronic inflammatory skin disorder where upregulation of matrix metalloproteinases (MMPs) and antimicrobial peptides (AMPs) is observed. Notably, inflammation, MMPs, and AMPs are also involved in the etiopathogenesis of neurodegenerative disorders including certain...... forms of dementia such as Alzheimer disease (AD). Based on several clinical observations, we investigated the association between rosacea and dementia, including AD in Danish registers. METHODS: All Danish citizens aged ≥18 years between January 1, 1997 and December 31, 2012 were linked...... at the individual level through administrative registers. Cox regression was used to calculate unadjusted and adjusted hazard ratios (HRs). RESULTS: The study comprised a total of 5,591,718 individuals, including 82,439 patients with rosacea. A total of 99,040 individuals developed dementia (any form) in the study...

  6. Clinical and laboratory study of rosacea in northern Greece.

    Science.gov (United States)

    Lazaridou, E; Apalla, Z; Sotiraki, S; Ziakas, N G; Fotiadou, C; Ioannides, D

    2010-04-01

    Numerous factors have been implicated in the pathogenesis of rosacea, which remains obscure. To examine the epidemiological characteristics of rosacea patients, the histopathological alterations, the prevalence of gastric Helicobacter pylori infection and the role of ultraviolet radiation, to detect the presence of Demodex folliculorum on affected skin and to elucidate the immunological nature of this disorder. The study included 100 patients with rosacea. Each patient was assessed with a clinical, haematological, biochemical and histological examination; serology test for the detection of antibodies against H. pylori; direct immunofluorescence on perilesional, sun exposed skin and indirect immunofluorescence with monkey oesophagus as a substrate; antinuclear antibody titre and a skin surface biopsy to search for Demodex folliculorum. Women were more frequently affected. Half of our patients were 51-70 years old. About two-thirds were photo-types I and II and 73% complained of worsening of conditions after sun exposure. An almost permanent histopathological feature was solar elastosis. Higher prevalence of H. pylori was not established. Prevalence and mean density of Demodex folliculorum were significantly increased in rosacea patients. Direct and indirect immunofluorescence tests were positive in 6.4% and 6.7% respectively. Antinuclear antibody titres were found in 21.1%. Our results suggest the pivotal role of chronic sun exposure in the pathogenesis of rosacea. Demodex folliculorum represents a significant cofactor that may contribute to the transition of the disease from a vascular to an inflammatory stage. The low positive results of direct and indirect immunofluorescence do not support a potential autoimmune role in the development of rosacea.

  7. Role of Demodex mite infestation in rosacea: A systematic review and meta-analysis.

    Science.gov (United States)

    Chang, Yin-Shuo; Huang, Yu-Chen

    2017-09-01

    The reported prevalence and degrees of Demodex mite infestation in rosacea vary widely. We sought to conduct an evidence-based meta-analysis of the prevalence and degrees of Demodex mite infestation in patients with rosacea. Systematic literature review and meta-analysis were conducted. Odds ratios for prevalence of infestation and standardized mean difference (SMD) for Demodex density in patients with rosacea were pooled. Subgroup analysis for type of rosacea, control group, and sampling and examination methods were also performed. Twenty-three case-control studies included 1513 patients with rosacea. Compared with the control patients, patients with rosacea were more likely to be infested by Demodex mites [odds ratio, 9.039; 95% confidence interval (CI), 4.827-16.925] and had significantly higher Demodex density (SMD, 1.617; 95% CI, 1.090-2.145). Both erythematotelangiectatic rosacea (SMD, 2.686; 95% CI, 1.256-4.116) and papulopustular rosacea (SMD, 2.804; 95% CI, 1.464-4.145) had significantly higher Demodex density than did healthy control patients. Interstudy variability was high, and a causal relationship could not be established by case-control studies. Patients with rosacea had significantly higher prevalence and degrees of Demodex mite infestation than did control patients. Demodex mites may play a role in both erythematotelangiectatic rosacea and papulopustular rosacea. Copyright © 2017 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  8. Acne Vulgaris and Acne Rosacea: An Update in Etiopathogenesis

    Directory of Open Access Journals (Sweden)

    Ozlem Ekiz

    2014-04-01

    Full Text Available Acne vulgaris is a chronic inflammatory disease of the pilosebaceous unit, characterized by comedones, papules, pustules, nodules, and scars rarely. The major pathogenic factors are abnormal follicular differentiation and increased ductal cornification, abnormal activity of sebaceous glands, microbial colonization of pilosebaceous units by Propionibacterium acnes and inflammation. Rosacea is a common, chronic inflammatory relapsing skin disorder of the central area of the face characterized by transient or persistent erythema, telangiectasia, papules and pustules. Although several hypotheses have been suggested for the etiopathogenesis of rosacea, the exact etiology is still unknown. In this review, we tried to summarize up-to-date information about etiopathogenesis of acne vulgaris and rosocea.

  9. Combination of new multifunctional molecules for erythematotelangiectatic rosacea disorder

    Directory of Open Access Journals (Sweden)

    Chajra H

    2015-10-01

    Full Text Available Hanane Chajra,1 Mahdi Nadim,2 Daniel Auriol,3 Kuno Schweikert,1 Fabrice Lefevre1 1Induchem AG, Volkestwil, Switzerland; 2CBM-CNRS, Orléans Cedex, 3Libragen SA, Toulouse, France Background: Rosacea, a common chronic skin disorder, is currently managed by patient education, pharmacological drugs, medical devices (laser and light therapies, and use of proper skin cares. Unfortunately, none of these actual treatments used alone or in combination is curative, and so we proposed a dermocosmetic active ingredient to mitigate some aspects of the rosacea and particularly for erythematotelangiectatic rosacea. Methods: Dermocosmetic active ingredient is composed of three glucosylated derivatives of natural plants hydroxybenzoic acid and hydroxycinnamic acids (rosmarinic acid, gallic acid, and caffeic acid. Anti-inflammatory, anti-angiogenesis, and anti-degranulation studies were done on cellular models (keratinocytes, mast cells, and endothelial cells. Efficiency of the active ingredient in comparison to placebo was assessed clinically on human volunteers having erythematotelangiectatic rosacea. The active and placebo were applied topically twice a day for 28 days. Biometrical analyses were done using a siascope tool. Results: We found that the active ingredient decreases inflammation (inhibition of interleukin-8 and tumor necrosis factor release, decreases degranulation of mast cells (inhibition of histamine release, and controls angiogenesis mechanism (inhibition of the production of vascular endothelial growth factor and neovessel formation on cellular models. Study on human volunteers confirmed macroscopically the efficiency of this active ingredient, as we observed no neovessel formation and less visible vessels. Conclusion: Although rosacea is a skin condition disorder that is difficult to heal, the studies have shown that this active ingredient could be a dermocosmetic support, especially for erythematotelangiectatic rosacea armamentarium. The

  10. Karyotype analysis in octoploid and decaploid wild strawberries, Fragaria (Rosaceae)

    Science.gov (United States)

    The 20 wild species of strawberries in the genus Fragaria (Rosaceae), have a euploid series including diploid (2n = 2x = 14) through decaploid (2n = 10x = 70) members. Karyotyping has not been thoroughly examined. The objective of this research was to determine the chromosomal morphology and karyoty...

  11. Microbiota of Demodex mites from rosacea patients and controls.

    Science.gov (United States)

    Murillo, Nathalia; Aubert, Jérome; Raoult, Didier

    2014-01-01

    Proliferation of Demodex mites is associated with rosacea. Furthermore, Demodex-associated bacteria were suggested to play a role in the pathogenesis of rosacea. We decided to analyze Demodex microbiota. Mites were collected by standardized skin surface biopsies from patients with erythematotelangiectatic, papulopustular rosacea or from control subjects. The microbiota from each mite was characterized by 16S rRNA clone library approach. The 16S rRNA clone library consisted of 367 clones obtained from 73 extracts originating from 5 samples per study group (ETR, PPR or healthy subjects). A total of 86 species were identified with 36 as Demodex-specific microbiota. In the papulopustular group, proportions of Proteobacteria and Firmicutes increased whereas proportion of Actinobacteria decreased. Here, we report preliminary results on the microbiota of Demodex mites based on a molecular approach showing an unexpected diversity. Differences according to the host status need to be confirmed but open new perspectives for diagnostic of rosacea. Copyright © 2014 Elsevier Ltd. All rights reserved.

  12. Botanicals and anti-inflammatories: natural ingredients for rosacea.

    Science.gov (United States)

    Emer, Jason; Waldorf, Heidi; Berson, Diane

    2011-09-01

    Rosacea is a chronic inflammatory skin condition characterized by cutaneous hypersensitivity. There are many therapeutic options available for the treatment of rosacea, but none are curative. Since the pathogenesis of rosacea remains elusive, it is not surprising that no single treatment is paramount and that many patients find therapies unsatisfactory or even exacerbating. Treatments are prescribed to work in concert with each other in order to ameliorate the common clinical manifestations, which include: papules and pustules, telangiectasias, erythema, gland hypertrophy, and ocular disease. The most validated topical therapies include metronidazole, azelaic acid, and sodium sulfacetamide-sulfur. Many other topical therapies, such as calcineurin inhibitors, benzoyl peroxide, clindamycin, retinoids, topical corticosteroids, and permethrin have demonstrated varying degrees of success. Due to the inconsistent results of the aforementioned therapies patients are increasingly turning to alternative products containing natural ingredients or botanicals to ease inflammation and remit disease. Additional research is needed to elucidate the benefits of these ingredients in the management of rosacea, but some important considerations regarding the natural ingredients with clinical data will be discussed here. Copyright © 2011 Elsevier Inc. All rights reserved.

  13. Updates on the pathophysiology and management of acne rosacea.

    Science.gov (United States)

    Elsaie, Mohamed L; Choudhary, Sonal

    2009-09-01

    There are many options for the treatment of acne rosacea, including topical and systemic therapies, laser and light-based therapies, and surgical procedures. A classification system for rosacea identifies 4 subtypes (ie, erythematotelangiectatic, papulopustular, phymatous, and ocular), which may help guide therapeutic decision making. Until recently, the pathophysiology of acne rosacea has been poorly understood and limited to descriptions of factors that exacerbate or improve this disorder. Recent molecular studies suggest that an altered innate immune response is involved in the pathogenesis of the vascular and inflammatory disease seen in patients with rosacea. These findings may help explain the benefits of current treatments and suggest new therapeutic strategies helpful for alleviating this disease. The goals of therapy include reduction of papules, pustules, erythema, physical discomfort, and an improvement in quality of life. Standard topical treatment agents include metronidazole, azelaic acid, and sodium sulfacetamide-sulfur. Second-line therapies include benzoyl peroxide, clindamycin, calcineurin inhibitors, and permethrin. There are also various systemic therapy options.

  14. Epidermal hydration levels in rosacea patients improve after minocycline therapy.

    LENUS (Irish Health Repository)

    Ní Raghallaigh, S

    2013-12-06

    Patients with rosacea frequently report increased skin sensitivity, with features suggestive of an abnormal stratum corneum (SC) permeability barrier. Sebum, pH and hydration levels influence epidermal homeostasis. The correlation of the change in these parameters with clinically effective treatment has not been previously analysed.

  15. Prevalence and risk of migraine in patients with rosacea

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Ashina, Messoud; Gaist, David

    2017-01-01

    Background Rosacea features increased neurovascular reactivity; migraine is a complex neurologic disorder characterized by recurrent episodes of headache associated with nausea and increased sensitivity to light and sound. Objective We evaluated the prevalence and risk of new-onset migraine in pa...

  16. Research of personal features of patients with rosacea

    Directory of Open Access Journals (Sweden)

    Davydova A.V.

    2014-09-01

    Full Text Available Aim: to study the personal characteristics of patients with different subtypes of rosacea and the establishment of the relationship with the clinical manifestations of dermatosis. Materials and methods. Through questionnaires of dermato-logical quality of life, SKINDEKS-29, The Zung Self-Rating Anxiety Scale, The Hamilton Anxiety Rating Scale, Toronto Alexithymia Scale and the method of «Type of attitude to the disease» interviewed 42 patients with different subtypes of rosacea. The data obtained were processed statistically. Results. Rosacea reduces the quality of life of patients, increases the subjective assessment of anxiety scales Zung and Hamilton with a predominance of performance anxiety in the mind. Diagnosed with intermediate degree of alexithymia and anosognosic, ergopathic, anxious and the sensitive types of attitude towards the disease. Conclusions. Predisposition, as well as the development of anxiety disorders, impaired social adjustment, reduced quality of life of patients with rosacea emphasizes the need to implement their algorithm survey assessment of personal characteristics.

  17. Distribution and Expression of Non-Neuronal Transient Receptor Potential (TRPV) Ion Channels in Rosacea

    Science.gov (United States)

    Sulk, Mathias; Seeliger, Stephan; Aubert, Jerome; Schwab, Verena D.; Cevikbas, Ferda; Rivier, Michel; Nowak, Pawel; Voegel, Johannes J.; Buddenkotte, Jörg; Steinhoff, Martin

    2011-01-01

    Rosacea is a frequent chronic inflammatory skin disease of unknown etiology. Because early rosacea reveals all characteristics of neurogenic inflammation, a central role of sensory nerves in its pathophysiology has been discussed. Neuroinflammatory mediators and their receptors involved in rosacea are poorly defined. Good candidates may be transient receptor potential (TRP) ion channels of vanilloid type (TRPV), which can be activated by many trigger factors of rosacea. Interestingly, TRPV2, TRPV3, and TRPV4 are expressed by both neuronal and non-neuronal cells. Here, we analyzed the expression and distribution of TRPV receptors in the various subtypes of rosacea on non-neuronal cells using immunohistochemistry, morphometry, double immunoflourescence, and quantitative real-time PCR (qRT-PCR) as compared with healthy skin and lupus erythematosus. Our results show that dermal immunolabeling of TRPV2 and TRPV3 and gene expression of TRPV1 is significantly increased in erythematotelangiectatic rosacea (ETR). Papulopustular rosacea (PPR) displayed an enhanced immunoreactivity for TRPV2, TRPV4, and also of TRPV2 gene expression. In phymatous rosacea (PhR)-affected skin, dermal immunostaining of TRPV3 and TRPV4 and gene expression of TRPV1 and TRPV3 was enhanced, whereas epidermal TRPV2 staining was decreased. Thus, dysregulation of TRPV channels also expressed by non-neuronal cells may be critically involved in the initiation and/or development of rosacea. TRP ion channels may be targets for the treatment of rosacea. PMID:22189789

  18. Activation of p38 and Erk Mitogen-Activated Protein Kinases Signaling in Ocular Rosacea.

    Science.gov (United States)

    Wladis, Edward J; Swamy, Supraja; Herrmann, Alyssa; Yang, Jinhong; Carlson, J Andrew; Adam, Alejandro P

    2017-02-01

    Rosacea-related cutaneous inflammation is a common cause of ocular surface disease. Currently, there are no specific pharmacologic therapies to treat ocular rosacea. Here, we aimed at determining the differences in intracellular signaling activity in eyelid skin from patients with and without ocular rosacea. This was an observational, comparative case series including 21 patients undergoing lower lid ectropion surgery at one practice during 2013 and 2014 (18 patients with rosacea, 13 control patients), and 24 paraffin-embedded archival samples from Albany Medical Center, selected randomly (12 patients with rosacea, 12 control patients). Cutaneous biopsies resulting from elective lower lid ectropion surgery were analyzed by Proteome Profiler Human Phospho-Kinase Array, Western blot, and/or immunohistochemistry. Samples derived from ocular rosacea patients showed increased levels of phosphorylated (active) p38 and Erk kinases. Phosphoproteins were mainly localized to the epidermis of affected eyelids. This finding provides a novel potential therapeutic target for treatment of ocular rosacea and possibly other forms of rosacea. Further testing is required to determine if p38 and Erk activation have a causal role in ocular rosacea. The selective activation of keratinocytes in the affected skin suggests that topical pathway inhibition may be an effective treatment that will ultimately prevent ocular surface damage due to ocular rosacea.

  19. Potential role of Demodex mites and bacteria in the induction of rosacea.

    Science.gov (United States)

    Jarmuda, Stanislaw; O'Reilly, Niamh; Zaba, Ryszard; Jakubowicz, Oliwia; Szkaradkiewicz, Andrzej; Kavanagh, Kevin

    2012-11-01

    Rosacea is a common dermatological condition that predominantly affects the central regions of the face. Rosacea affects up to 3 % of the world's population and a number of subtypes are recognized. Rosacea can be treated with a variety of antibiotics (e.g. tetracycline or metronidazole) yet no role for bacteria or microbes in its aetiology has been conclusively established. The density of Demodex mites in the skin of rosacea patients is higher than in controls, suggesting a possible role for these mites in the induction of this condition. In addition, Bacillus oleronius, known to be sensitive to the antibiotics used to treat rosacea, has been isolated from a Demodex mite from a patient with papulopustular rosacea and a potential role for this bacterium in the induction of rosacea has been proposed. Staphylococcus epidermidis has been isolated predominantly from the pustules of rosacea patients but not from unaffected skin and may be transported around the face by Demodex mites. These findings raise the possibility that rosacea is fundamentally a bacterial disease resulting from the over-proliferation of Demodex mites living in skin damaged as a result of adverse weathering, age or the production of sebum with an altered fatty acid content. This review surveys the literature relating to the role of Demodex mites and their associated bacteria in the induction and persistence of rosacea and highlights possible therapeutic options.

  20. Distribution and expression of non-neuronal transient receptor potential (TRPV) ion channels in rosacea.

    Science.gov (United States)

    Sulk, Mathias; Seeliger, Stephan; Aubert, Jerome; Schwab, Verena D; Cevikbas, Ferda; Rivier, Michel; Nowak, Pawel; Voegel, Johannes J; Buddenkotte, Jörg; Steinhoff, Martin

    2012-04-01

    Rosacea is a frequent chronic inflammatory skin disease of unknown etiology. Because early rosacea reveals all characteristics of neurogenic inflammation, a central role of sensory nerves in its pathophysiology has been discussed. Neuroinflammatory mediators and their receptors involved in rosacea are poorly defined. Good candidates may be transient receptor potential (TRP) ion channels of vanilloid type (TRPV), which can be activated by many trigger factors of rosacea. Interestingly, TRPV2, TRPV3, and TRPV4 are expressed by both neuronal and non-neuronal cells. Here, we analyzed the expression and distribution of TRPV receptors in the various subtypes of rosacea on non-neuronal cells using immunohistochemistry, morphometry, double immunoflourescence, and quantitative real-time PCR (qRT-PCR) as compared with healthy skin and lupus erythematosus. Our results show that dermal immunolabeling of TRPV2 and TRPV3 and gene expression of TRPV1 is significantly increased in erythematotelangiectatic rosacea (ETR). Papulopustular rosacea (PPR) displayed an enhanced immunoreactivity for TRPV2, TRPV4, and also of TRPV2 gene expression. In phymatous rosacea (PhR)-affected skin, dermal immunostaining of TRPV3 and TRPV4 and gene expression of TRPV1 and TRPV3 was enhanced, whereas epidermal TRPV2 staining was decreased. Thus, dysregulation of TRPV channels also expressed by non-neuronal cells may be critically involved in the initiation and/or development of rosacea. TRP ion channels may be targets for the treatment of rosacea.

  1. Successful treatment of erythematotelangiectatic rosacea with pulsed light and radiofrequency.

    Science.gov (United States)

    Taub, Amy Forman; Devita, Erin C

    2008-05-01

    Many laser and light devices have reported to be successful in the treatment of the flushing, background erythema, and telangiectasias that characterize erythematotelangiectatic rosacea including pulsed dye laser, potassium titanyl phosphate, intense pulsed light, and dual-wavelength lasers. A technology called ELOS (electro-optical synergy) combines pulsed light or laser with bipolar radiofrequency. This combination, developed in 2000, was based on the premise that these two forms of energy could be synergistic. One such device (Aurora SRA-skin-rejuvenation advanced handpiece, Syneron Medical Ltd., Yokneam, Israel) has a light spectrum of 470 to 980nm, energy up to 45J/cm(2), and a range of radiofrequency energy of 5 to 25J/cm(3) and is indicated for the treatment of vascular and pigmented lesions. We attempted to quantify the improvement of moderate-to-severe type-1 rosacea after three and five full-face treatments with this modality. Twenty-one patients with moderate-to-severe rosacea underwent five monthly full-face treatments with this device. The patients were evaluated with high-resolution photographs (Canfield Visia CR, Canfield, Fairfield, New Jersey) and self-evaluated via the National Rosacea Society's official "Scorecard." Erythema and telangiectasia (physician assessed) as well as flushing and global status (patient assessed) achieved improvement that was statistically significant. Five treatments were no more effective than three, although the photographs reveal subtle improvements. There were no significant adverse events. The results of this study suggest that the combination of optical and RF energies is effective for the treatment of rosacea. ELOS, as well as other vascular-focused lasers and light sources, provides an important treatment option for patients who fail medical therapy, reach a plateau in their response to medical therapy, or wish to avoid chronic oral therapy.

  2. Consensus recommendations from the American acne & rosacea society on the management of rosacea, part 4: a status report on physical modalities and devices.

    Science.gov (United States)

    Tanghetti, Emil; Del Rosso, James Q; Thiboutot, Diane; Gallo, Richard; Webster, Guy; Eichenfield, Lawrence F; Stein-Gold, Linda; Berson, Diane; Zaenglein, Andrea

    2014-02-01

    The fourth article in this 5-part series reviews physical modalities and devices used to treat cutaneous rosacea based on consensus recommendations from the American Acne & Rosacea Society (AARS) on the management of the common presentations of cutaneous rosacea. The major therapeutic uses of physical modalities and devices, especially laser and light-based systems, are for treatment of telangiectases and persistent facial erythema (background erythema). Phymas, especially rhinophyma, also are treated with physical modalities such as ablative lasers or surgical devices (eg, electrosurgical loop). Appropriately selected and properly used lasers and intense pulsed light (IPL) devices can successfully address specific clinical manifestations of rosacea that exhibit limited or no response to available medical therapies, such as telangiectases and background centrofacial erythema. Rosacea-associated symptoms also may improve. In most cases, treatment will need to be repeated intermittently to sustain improvement.

  3. Evidence-based update on rosacea comorbidities and their common physiologic pathways.

    Science.gov (United States)

    Holmes, Anna D; Spoendlin, Julia; Chien, Anna L; Baldwin, Hilary; Chang, Anne Lynn S

    2018-01-01

    Rosacea is a common chronic inflammatory disease affecting the facial skin whose etiology and pathophysiology are the subject of much investigation. Risk factors include genetic and environmental elements that may predispose individuals to localized inflammation and abnormal neurovascular responses to stimuli. Recent studies have introduced an array of systemic rosacea comorbidities, such as inflammatory bowel disease and neurologic conditions, that can be challenging to synthesize. We critically review the current data behind reported rosacea comorbidities and identify and highlight underrecognized physiologic mediators shared among rosacea and associated comorbidities. This information may be helpful in addressing patient questions about potential systemic implications of rosacea and can serve as a candidate platform for future research to understand rosacea and improve treatments. Copyright © 2017 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  4. Brimonidine tartrate for the treatment of facial flushing and erythema in rosacea.

    Science.gov (United States)

    Tong, Lana X; Moore, Angela Yen

    2014-09-01

    Rosacea is a chronic inflammatory dermatologic condition that can often be disfiguring with significant negative impact on patients' quality of life. Sanrosa (brimonidine tartate) is a novel therapeutic agent targeting the facial flushing and erythema of rosacea through its α₂ adrenergic receptor agonist activity. The goal of this article is to discuss current treatment options for rosacea and the properties of brimonidine tartate as well as the evidence surrounding its efficacy and safety profile.

  5. Increased risk of chronic kidney disease in patients with rosacea: A nationwide population-based matched cohort study.

    Directory of Open Access Journals (Sweden)

    Hsien-Yi Chiu

    Full Text Available Rosacea is a chronic inflammatory skin disorder. Inflammation and oxidative stress are involved in the etiopathogenesis of rosacea and chronic kidney disease (CKD. This study aimed to investigate the association between rosacea and CKD.This population-based cohort study identified 277 patients with rosacea in the Taiwan National Health Insurance Research Database during 2001-2005. These patients were matched for age, sex, and comorbidities with 2216 patients without rosacea. All subjects were individually followed-up for 8-12 years to identify those who subsequently developed CKD.The incidence rates of CKD per 1000 person-years were 16.02 in patients with rosacea and 10.63 in the non-rosacea reference population. After adjusting for other covariates and considering the competing risk of mortality, patients with rosacea remained at increased risk of CKD (adjusted sub-distribution hazard ratio (aSD-HR 2.00; 95% confidence interval (CI 1.05-3.82. The aSD-HRs (95% CI for CKD were 1.82 (0.83-4.00 and 2.53 (1.11-5.75 for patients with mild and moderate-to-severe rosacea, respectively.Rosacea is an independent risk factor for CKD. High rosacea severity and old age further increased CKD risk in patients with rosacea. Careful monitoring for CKD development should be included as part of integrated care for patients with rosacea.

  6. Treatment of rosacea with long-pulsed Nd: YAG laser

    Directory of Open Access Journals (Sweden)

    Ekin Meşe Say

    2013-03-01

    Full Text Available Background and Design: Rosacea is a chronic inflammatory disorder of the face. There is no curative treatment for the disease. Facial flushing and vascular lesions due to rosacea may significantly affect a patient’s quality of life. Topical and oral antibiotics are not effective for treating rosacea. Currently, laser treatment of vascular lesions has been reported in the literature. We aimed to investigate the efficacy of long-pulse 1064-nm neodymium: YAG (Nd: YAG laser in the treatment of vascular lesions (erythema and telangiectasia in rosacea patients. Materials and Methods: Thirty-nine patients (29 women, 10 men with erythematotelangiectatic rosacea (ETR were recruited into the study. Severity of the disease (ETR-score: 0-3 was assessed for all patients. We used long-pulsed Nd: YAG laser for vascular lesions at 3-4 weeks intervals. The face was divided into seven anatomic regions for evaluation. Assessment was made by comparing pretreatment and posttreatment photographs by using ETR-scores. For evaluating patient satisfaction, a scale of 0 to 3 was used. Results: The patients were divided into three groups according to the ETR scores [ETR-1 (n=12, ETR-2 (n=9, ETR-3 (n=18]. Following an average of 3.95 (2-8 sessions laser treatments, the clinical improvement was statistically significant in all groups (p<0.05. The mean reduction of ETR-score was 91.70% in patients with ETR-1 and. the clinical improvement was to be decreased in severe forms of ETR. The most common sites for the lesions were the malar region, ala nasi and the nasal dorsum, respectively. The lesions on the ala nasi were more recalcitrant to the treatment than those on the other areas. Regarding to physician assessment of treatment’s success, 97% of the patients was associated with moderate and excellent improvement. According to physicians’ assessment, excellent improvement was noticed in 43.58% and, 61.5% of patients reported a high degree of satisfaction with this

  7. Long-term effectiveness of dobesilate in the treatment of papulopustular rosacea.

    Science.gov (United States)

    Cuevas, Pedro; Angulo, Javier; Giménez-Gallego, Guillermo

    2011-10-16

    This case report is a representative example from a study directed to assess the long-term clinical benefit of dobesilate in rosacea in five enrolled papulopustular rosacea patients with several years of disease, treated topically with 5% potassium dobesilate cream for 3 weeks. The patient suffered papulopustular rosacea for more than 10 years, during which she received topical metronidazole and azelaic acid, and systemic doxycycline therapies without satisfactory improvement. Dobesilate treatment promoted improvement of rosacea symptoms and signs. Two years after treatment the patient still shows a good facial cosmesis.

  8. Severe demodexfolliculorum-associated oculocutaneous rosacea in a girl successfully treated with ivermectin.

    Science.gov (United States)

    Brown, Megan; Hernández-Martín, Angela; Clement, Ana; Colmenero, Isabel; Torrelo, Antonio

    2014-01-01

    There is a limited therapeutic armamentarium for recalcitrant cases of childhood rosacea. We report the case of a 12-year-old girl who presented with severe ocular and cutaneous rosacea unresponsive to oral doxycycline, oral isotretinoin, and topical tacrolimus. A biopsy specimen showed numerous mites within the folliculosebaceous unit. Treatment with a single dose of oral ivermectin achieved resolution of her symptoms. The causative role of Demodex folliculorum should be considered in immunocompetent children with rosacea or rosacea-like refractory eruptions. In such cases, treatment with ivermectin can be beneficial.

  9. Long-term effectiveness of dobesilate in the treatment of papulopustular rosacea

    Science.gov (United States)

    Cuevas, Pedro; Angulo, Javier; Giménez-Gallego, Guillermo

    2011-01-01

    This case report is a representative example from a study directed to assess the long-term clinical benefit of dobesilate in rosacea in five enrolled papulopustular rosacea patients with several years of disease, treated topically with 5% potassium dobesilate cream for 3 weeks. The patient suffered papulopustular rosacea for more than 10 years, during which she received topical metronidazole and azelaic acid, and systemic doxycycline therapies without satisfactory improvement. Dobesilate treatment promoted improvement of rosacea symptoms and signs. Two years after treatment the patient still shows a good facial cosmesis. PMID:22675033

  10. Recent advances in the understanding and management of rosacea

    Science.gov (United States)

    2014-01-01

    Rosacea is a chronic relapsing inflammatory facial dermatosis. There are several known triggers but the pathogenesis remains unknown. Recent achievements in understanding this disease point to the importance of skin-environmental interactions. This includes physical and chemical factors, but also microbial factors. The impairment of the skin barrier function and the activation of the innate immune defences are major and connected pathways contributing to an ongoing inflammatory response in the affected skin. This becomes modulated by endogenous factors like neurovascular, drugs, and psychological factors. These factors offer new therapeutic targets for rosacea treatment. There is a broader range of anti-inflammatory compounds available with a favourable safety record. Only recently have persistent erythema and flushing been addressed by new drug formulations. PMID:25184040

  11. Biopsy may help identify early pyoderma faciale (rosacea fulminans).

    Science.gov (United States)

    Helm, Thomas N; Schechter, Jay

    2006-04-01

    Pyoderma faciale is an uncommon acute presentation of rosacea. Edema, nodules, and draining sinuses may occur. Women in their early 20s are typically affected, and severe scarring may result in untreated cases. We report the case of a woman in whom a biopsy helped establish an early diagnosis so that decisive intervention could be initiated and scarring avoided. The histologic features of pyoderma faciale only rarely have been described and are illustrated in this case.

  12. Endoplasmic reticulum stress: key promoter of rosacea pathogenesis.

    Science.gov (United States)

    Melnik, Bodo C

    2014-12-01

    Recent scientific interest in the pathogenesis of rosacea focuses on abnormally high facial skin levels of cathelicidin and the trypsin-like serine protease kallikrein 5 (KLK5) that cleaves the cathelicidin precursor protein into the bioactive fragment LL-37, which exerts crucial proinflammatory, angiogenic and antimicrobial activities. Furthermore, increased expression of toll-like receptor 2 (TLR2) has been identified in rosacea skin supporting the participation of the innate immune system. Notably, TLRs are expressed on sensory neurons and increase neuronal excitability linking TLR signalling to the transmission of neuroinflammatory responses. It is the intention of this viewpoint to present a unifying concept that links all known clinical trigger factors of rosacea such as UV irradiation, heat, skin irritants and special foods to one converging point: enhanced endoplasmic reticulum (ER) stress that activates the unfolded protein response (UPR). ER stress via upregulation of transcription factor ATF4 increases TLR2 expression, resulting in enhanced production of cathelicidin and KLK5 mediating downstream proinflammatory, angiogenic and antimicrobial signalling. The presented concept identifies rosacea trigger factors as environmental stressors that enhance the skin's ER stress response. Exaggerated cutaneous ER stress that stimulates the TLR2-driven inflammatory response may involve sebocytes, keratinocytes, monocyte-macrophages and sensory cutaneous neurons. Finally, all antirosacea drugs are proposed to attenuate the ER stress signalling cascade at some point. Overstimulated ER stress signalling may have evolutionarily evolved as a compensatory mechanism to balance impaired vitamin D-driven LL-37-mediated antimicrobial defenses due to lower exposure of UV-B irradiation of the northern Celtic population. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  13. Demodex Mite, Rosacea and Skin Melanoma; Coincidence or Association?

    Science.gov (United States)

    Talghini, Shahla; Fouladi, Daniel F; Babaeinejad, Shahla; Shenasi, Reihan; Samani, Simin Mirakhor

    2015-03-01

    To examine the possible associations between Demodex folliculorum and a number of skin diseases. Standardized skin surface biopsy samples were obtained from the cheeks of 144 patients with histopathologically proven basal cell carcinoma (BCC, n = 27), squamous cell carcinoma (SCC, n = 28), melanoma (n = 23), discoid lupus erythematosus (DLE, n = 32), and rosacea (n = 34). Thirty-four sex- and age-matched healthy volunteers served as controls. Mite density (per cm2) and infestation (density ≥ 5) were compared between the controls and patients. Mite infestation rates (%) did not differ significantly between the controls (20.6) and patients with BCC (22.2, p = 0.88), SCC (17.9, p = 0.79), melanoma (4.3, p = 0.08), and DLE (21.9, p = 0.90). Compared with the controls, the mite infestation rate was significantly higher in patients with rosacea (47.1, p = 0.02, odds ratio: 3.43, 95% confidence interval: 1.18-9.99). The mean mite density did not differ significantly between the controls (4.11 ± 2.17) and patients with BCC (5.34 ± 2.35, p = 0.75), SCC (3.57 ± 2.01, p = 0.38), and DLE (3.56 ± 1.34, p = 0.83), whereas it was significantly higher in patients with rosacea (8.78 ± 3.58, p = 0.02) and lower in patients with melanoma (1.89 ± 0.69, p = 0.02). D. folliculorum may be associated with rosacea and melanoma but not with BCC, SCC, or DLE.

  14. Acetylcholinesterase inhibitory effects of some plants from Rosaceae

    Directory of Open Access Journals (Sweden)

    S. Esmaeili

    2015-10-01

    Full Text Available Background and objectives: Alzheimer's disease (AD is an age dependent disorder. AD is associated with decrease of brain acetylcholine level. Nowadays, one of the methods for progression inhibition of AD is using acetylcholinesterase inhibitors. Rosaceae is a large plant family. Different biological effects of some species of this family have been reported. The aim of the present study was to assess the acetylcholinesterase inhibitory (AChEI activity of the selected plants belonging to Rosaceae family. Methods: AChEI activity of six species from Rosaceae including Cotoneaster nummularia, Cerasus microcarpa, Amygdalus scoparia, Agrimonia eupatoria, Rosa canina and Rosa damascena were evaluated based on Ellman’s method in concentration of 300 µg/mL using total extracts and methanol fractions which were obtained by maceration. Results: The results showed that the total extract and methanol fraction of the aerial parts of A. eupatoria demonstrated significant AChEI activity with 46.5% and 56.2% inhibition of the enzyme, respectively. Conclusion: According to the results of the AChEI activity of the methanol fraction of A. eupatoria, it seems that the polar components of the species such as flavonoids may be responsible for its effectiveness.

  15. Can Hematologic Parameters be an Indicator of Metabolic Disorders Accompanying Rosacea?

    Science.gov (United States)

    Akin Belli, Asli; Kara, Asude; Ozbas Gok, Seyran

    2017-07-01

    Recently, diverse hematologic parameters have been used as an indicator of the presence or severity of inflammatory and cardiovascular diseases. Our aim was to investigate the ratios of neutrophils to lymphocytes (NL), monocytes to high-density lipoprotein (HDL) cholesterol (MHC), and platelets to lymphocytes (PL) in patients with rosacea in comparison with the control group and determine whether there was a correlation between these ratios and metabolic disorders in patients with rosacea. We conducted a case-control study on 61 patients with rosacea and 60 healthy controls between January 2015 and January 2016 at the Dermatology Outpatient Clinic, Mugla, Turkey. Demographic data, biochemical parameters, hematologic parameters and ratios, the presence of metabolic syndrome (MS), and the presence of insulin resistance (IR) in the participants were recorded. Sixty one patients with rosacea (16 men, 45 women) and 60 controls (13 men, 47 women) were included in the study. The NL ratio, mean levels of low-density lipoprotein (LDL) and total cholesterol, triglyceride, C-reactive protein (CRP), systolic and diastolic blood pressures, and the presence of IR were significantly higher in patients with rosacea than in controls. In the rosacea group, the MHC ratio was significantly higher in patients with rosacea with IR and MS. Moreover, only the MHC ratio was an independent predictor of MS according to univariate logistic regression analysis. The cutoff value of MHC on admission for predicting MS in patients with rosacea was 0.013.The higher levels of NL ratio and IR in the rosacea group corroborate the previous studies demonstrating a high level of cardiovascular risk factors in patients with rosacea. The MHC ratio may be used as a simple and inexpensive method to predict metabolic disorders in patients with rosacea.

  16. Patient perspectives on low level light therapy and laser therapies for rosacea-associated persistent facial redness

    OpenAIRE

    McGinley, Meagan; Alinia, Hossein; Kuo, Sandy; Huang, Karen E; Feldman, Steven R

    2015-01-01

    Introduction: There are no definitive treatments of facial redness for rosacea. All treatments aim to alleviate symptoms. Patients’ perspectives of two emerging modalities, Low level light therapy and laser treatments are not well characterized. The purpose is to further understand rosacea patients unmet needs about these modalities,   Methods: The publicly accessible, online rosacea forum was accessed at august 2013. Stratified random sampling metho...

  17. Clinical evaluation of Libyan patients with rosacea and its correlation with seropositivity to Helicobacter pylori

    Directory of Open Access Journals (Sweden)

    Nadia Abdalhafid El-Sherif

    2014-01-01

    Conclusions: The papulopustular subtype of rosacea was the most common, moreover, many patients also had other subtypes of rosacea simultaneously. Sun exposure plays a critical role in its etiology. H. pylori represents a significant cofactor that may contribute to the severity of the disease.

  18. Clinical assessment of rosacea severity: oriental score vs. quantitative assessment method with imaging and biomedical tools.

    Science.gov (United States)

    Kim, J; Ahn, J W; Ha, S; Kwon, S H; Lee, O; Oh, C

    2017-05-01

    Rosacea is a common chronic inflammatory disorder affecting facial skin. Currently, no accurate and objective method is available for assessing the severity of rosacea. Most studies use the National Rosacea Society Standard (NRSS) grading method, which lacks objectivity and yields varying results. Eighteen patients with rosacea were included. Clinical severity was assessed on the basis of the NRSS grade, Investigators' Global Assessment, Patients' Global Assessment, and Dermatology Quality of Life Index. A skin color analysis system was used to measure the facial area showing erythema, and biophysical parameters of facial skin (transepidermal water loss and skin surface hydration) were examined. To find statistical significant in classification severity of the rosacea, statistical analysis was performed with all parameters. A significant correlation (P rosacea of different levels of severity (mild, moderate, severe; P rosacea, in addition to biophysical parameter assessment. The combination of these two analytical methods enabled objective and quantitative evaluation of the severity of rosacea. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  19. Comparative Efficacy of Radiofrequency and Pulsed Dye Laser in the Treatment of Rosacea.

    Science.gov (United States)

    Kim, Sue-Jeong; Lee, Young; Seo, Young-Joon; Lee, Jeung-Hoon; Im, Myung

    2017-02-01

    Laser and light-based therapies have been used successfully in the treatment of rosacea; however, evidence is lacking regarding the efficacy of radiofrequency (RF). This study evaluated the efficacy of RF in the treatment of rosacea compared with pulsed dye laser (PDL). Thirty patients with rosacea (erythematotelangiectatic rosacea [ETR], n = 20; papulopustular rosacea [PPR], n = 10) were enrolled in a randomized, controlled, split-face study. The patients were treated with RF on one side and PDL on the other side. Each treatment consisted of 3 sessions at 4-week intervals and followed up until 4 weeks after the last treatment. Efficacy was assessed by rosacea severity score, erythema index, lesion counts, physician's subjective evaluation, and patient's satisfaction. Radiofrequency and PDL resulted in significant improvement in severity scores and erythema and 70% of the patients receiving RF treatment showed a clinical improvement of >50%. No significant difference was noted between RF and PDL treatment in ETR. However, RF treatment led to a significantly greater decrease in papulopustular lesion count and rosacea severity score in PPR compared with PDL treatment. RF therapy was effective in the treatment of rosacea. It should be considered an alternative therapeutic option, especially in PPR.

  20. Pit membranes in tracheary elements of Rosaceae and related families: New records of tori and pseudotori

    NARCIS (Netherlands)

    Jansen, S.; Sano, Y.; Choat, B.; Rabaey, D.; Lens, F.; Dute, R.R.

    2007-01-01

    The micromorphology of pits in tracheary elements was examined in 35 species representing 29 genera of Rosaceae and related families to evaluate the assumption that angiosperm pits are largely invariant. In most Rosaceae, pit membranes between fibers and tracheids frequently appear to have amorphous

  1. Could Probiotics Be the Next Big Thing in Acne and Rosacea Treatments?

    Science.gov (United States)

    ... rosacea by affecting what is known as the “gut-brain-skin axis.” With this theory, stress alone or in combination ... flares of acne or rosacea associated with the “gut-brain-skin axis,” Dr. Bowe advises patients to find ways to ...

  2. Assessment of the risk of cardiovascular disease in patients with rosacea

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Hansen, Peter R; Gislason, Gunnar H

    2016-01-01

    BACKGROUND: Recent studies have shown a higher prevalence of cardiovascular (CV) risk factors in patients with rosacea. However, it remains unknown whether rosacea represents an independent CV risk factor. OBJECTIVE: We evaluated the risk of myocardial infarction, stroke, CV death, major adverse ...

  3. Health-related quality of life in patients with cutaneous rosacea: a systematic review

    NARCIS (Netherlands)

    van der Linden, Mireille M. D.; van Rappard, Dominique C.; Daams, Joost G.; Sprangers, Mirjam A. G.; Spuls, Phyllis I.; de Korte, John

    2015-01-01

    Health-related quality of life (HRQoL) of rosacea patients is a relevant outcome measure in research and clinical practice. A review of the literature was systematically carried out regarding levels of HRQoL of patients with rosacea, including associations between HRQoL scores, demographic and

  4. TLR2 Expression Is Increased in Rosacea and Stimulates Enhanced Serine Protease Production by Keratinocytes

    Science.gov (United States)

    Yamasaki, Kenshi; Kanada, Kimberly; Macleod, Daniel T.; Borkowski, Andrew W.; Morizane, Shin; Nakatsuji, Teruaki; Cogen, Anna L.; Gallo, Richard L.

    2011-01-01

    A diverse environment challenges skin to maintain temperature, hydration, and electrolyte balance while also maintaining normal immunological function. Rosacea is a common skin disease that manifests unique inflammatory responses to normal environmental stimuli. We hypothesized that abnormal function of innate immune pattern recognition could explain the enhanced sensitivity of patients with rosacea, and observed that the epidermis of patients with rosacea expressed higher amounts of Toll-like receptor 2 (TLR2) than normal patients. Increased expression of TLR2 was not seen in other inflammatory skin disorders such as atopic dermatitis or psoriasis. Overexpression of TLR2 on keratinocytes, treatment with TLR2 ligands, and analysis of TLR2-deficient mice resulted in a calcium-dependent release of kallikrein 5 from keratinocytes, a critical protease involved in the pathogenesis of rosacea. These observations show that abnormal TLR2 function may explain enhanced inflammatory responses to environmental stimuli and can act as a critical element in the pathogenesis of rosacea. PMID:21107351

  5. Nationwide Assessment of Cause-Specific Mortality in Patients with Rosacea

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Fowler, Joseph F; Gislason, Gunnar H

    2016-01-01

    BACKGROUND: Emerging data suggest that rosacea is associated with several comorbidities; however, the causes of mortality in patients with rosacea have not yet been investigated. OBJECTIVE: We evaluated all-cause and cause-specific death rates in patients with rosacea in a population-based Danish...... cohort study. METHODS: All Danish individuals aged ≥18 years between 1 January 1997 and 31 December 2012 with rosacea diagnosed by hospital dermatologists were linked in nationwide registers and compared with age- and sex-matched general-population subjects (1:5 ratio). Death rates were calculated per...... 1000 person-years, and hazard ratios (HRs) were estimated using Cox regression models. RESULTS: The total cohort (n = 35,958) included 5993 patients with rosacea and 29,965 age- and sex-matched individuals from the general population. During the maximum 15 years of follow-up, 664 (11.1 %) patients...

  6. Advances in understanding and managing rosacea: part 1: connecting the dots between pathophysiological mechanisms and common clinical features of rosacea with emphasis on vascular changes and facial erythema.

    Science.gov (United States)

    Del Rosso, James Q

    2012-03-01

    Rosacea is a common inflammatory facial dermatoses affecting primarily adults with fair skin, although all skin types may be affected. The diagnostic term "rosacea" reflects a spectrum of clinical features with the more common presentations characterized by increased blood flow and vasodilation during disease flares, which accentuate central facial erythema. Inflammatory lesions, usually papules and/or pustules are present in some cases. Variations in magnitude of the associated features of rosacea are noted clinically. Over time, other clinical features emerge or may be further accentuated, such as diffuse facial erythema and telangiectasias, as fixed changes in cutaneous vasculature occur. These later findings account for persistent diffuse facial erythema usually accentuated centrally on the inner cheeks, chin, nose, and/or medial forehead. Some patients may also develop phymatous changes and/or have concurrent ocular rosacea. Augmented innate immune response to certain triggers (often exogenous) and neurovascular/neuroimmune dysregulation appear to be involved early in the pathophysiological sequence of cutaneous rosacea and appear to signal other downstream inflammatory or physiochemical cascades that contribute to the pathogenesis of the disorder. In this article, Part 1 of a two-part series, emphasis is placed upon the correlation of clinical features and underlying pathophysiological changes in the more common presentations of rosacea encountered by the clinician. The importance of this information is that some of these pathogenic mechanisms are modulated by available therapies, and others remain as targets for the development of new therapeutic agents or modalities.

  7. Rosaceae endémicas del Perú

    Directory of Open Access Journals (Sweden)

    Wilfredo Mendoza

    2013-10-01

    Full Text Available La familia Rosaceae es reconocida en el Perú por presentar 24 géneros y 113 especies (Brako & Zarucchi, 1993; Mendoza, 2005; Ulloa Ulloa et al., 2004, entre hierbas, arbustos y árboles. En este trabajo reconocemos 14 especies endémicas en cuatro géneros. Las especies endémicas se encuentran principalmente en las regiones Bosques Pluviales Montanos, Bosques Muy Húmedos Montanos y Páramo, entre los 1900 y 3800 m de altitud. Seis especies endémicas se encuentran representadas dentro del Sistema Nacional de Áreas Naturales Protegidas por el Estado.

  8. The psychological impact of rosacea and the influence of current management options.

    Science.gov (United States)

    Moustafa, Farah; Lewallen, Robin S; Feldman, Steven R

    2014-11-01

    Rosacea is a common problem that is underdiagnosed; if left untreated can result in physical disfigurement and emotional distress. We reviewed the current literature to determine the degree of psychosocial impact of rosacea and the importance of treatment. We also reviewed the current treatment options. A search of the MEDLINE, EMBASE, and psycINFO databases from 1946 to present was performed to identify previous articles regarding the psychosocial and quality-of-life (QoL) impact of rosacea. A total of 17 studies were found that focused on the following areas: impact of disease on QoL, improvement of QoL with treatment, and willingness to pay. Reviewed articles used different measurement systems to quantify impact on QoL making comparisons between studies difficult to interpret. Patients with rosacea have higher incidences of embarrassment, social anxiety, depression, and decreased QoL compared with the rest of the population. Adequate treatment of symptoms results in improvement of QoL in patients with rosacea. New options that target the facial erythema of rosacea may help mitigate the negative psychological impact of rosacea. Copyright © 2014 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  9. Patients with Rosacea Have Increased Risk of Depression and Anxiety Disorders: A Danish Nationwide Cohort Study.

    Science.gov (United States)

    Egeberg, Alexander; Hansen, Peter Riis; Gislason, Gunnar Hilmar; Thyssen, Jacob Pontoppidan

    2016-01-01

    Rosacea is a chronic skin condition that affects self-esteem and quality of life. However, data on depression and anxiety in patients with rosacea are scarce. The aim of this study was to investigate the relationship between rosacea and new-onset depression and anxiety disorders. Data on all Danish citizens aged ≥18 years between January 1, 1997, and December 31, 2011, were linked at individual level in nationwide registers. Incidence rates per 1,000 person-years were calculated, and crude and adjusted incidence rate ratios (IRRs) with 95% confidence intervals (95% CIs) were estimated by Poisson regression models. The study comprised a total of 4,632,341 individuals, including 30,725 and 24,712 patients with mild and moderate-to-severe rosacea, respectively. Mild and moderate-to-severe rosacea increased the risk of both depression [IRR 1.89 (95% CI 1.82-1.96) and IRR 2.04 (95% CI 1.96-2.12)] and anxiety disorders [IRR 1.80 (95% CI 1.75-1.86) and IRR 1.98 (95% CI 1.91-2.05)]. Rosacea was associated with a disease severity-dependent, increased risk of depression and anxiety disorders. The findings may call for increased awareness of psychiatric morbidity in patients with rosacea. © 2016 S. Karger AG, Basel.

  10. Increased density of Demodex folliculorum and evidence of delayed hypersensitivity reaction in subjects with papulopustular rosacea.

    Science.gov (United States)

    Georgala, S; Katoulis, A C; Kylafis, G D; Koumantaki-Mathioudaki, E; Georgala, C; Aroni, K

    2001-09-01

    Rosacea is a common chronic dermatosis that evolves in stages. The mite Demodex folliculorum has been implicated in its obscure aetiopathogenesis. To evaluate the importance of D. folliculorum in the aetiology and course of rosacea. We studied 92 consecutive cases of papulopustular rosacea and 92 age- and sex-matched controls. Prevalence and density of D. folliculorum were estimated by microscopic examination of the expressed follicular content. Histological examination and immunohistochemical study of the inflammatory infiltrate were performed in 10 subjects (five with positive D. folliculorum finding and five with negative finding). D. folliculorum was detected in 83 (90.2%) of the 92 rosacea subjects but only 11(11.9%) of the controls. The mean mite density was 2.03 mites/visual field in the rosacea group (range 0-5, SD = 1.2) and 0.16 mites/visual field (range 0-2, SD = 0.52) in the control group. The difference was statistically significant (P Demodex mites do not seem to be the cause of rosacea, they may represent an important cofactor, especially in papulopustular rosacea. Immunohistochemical findings suggest that a delayed hypersensitivity reaction, possibly triggered by antigens of follicular origin, probably related to D. folliculorum, may occur, stimulating progression of the affection to the papulopustular stage.

  11. Ocular Rosacea Causing Corneal Melt in an African American Patient and a Hispanic Patient

    Directory of Open Access Journals (Sweden)

    Joanna S. Saade

    2017-01-01

    Full Text Available Purpose. To discuss two rare presentations of ocular rosacea in a Hispanic patient and an African American patient with unusual ocular manifestations. Case Report. Case  1: a 43-year-old Hispanic woman presented with right eye corneal perforation. Her prior medical history was significant for rosacea only, diagnosed clinically by a dermatologist. Her eye exam showed signs of bilateral ocular rosacea. An emergent full thickness tectonic corneal patch graft was done. The patient’s bilateral eye symptoms improved one month after initiating rosacea treatment. Case  2: a 51-year-old African American man with long standing history of untreated rosacea presented with bilateral peripheral corneal thinning with neovascularization that led to right eye corneal perforation. Glue and bandage contact lens were applied. The patient did well 4 weeks after starting antibacterial, oral steroids, and rosacea treatment. Discussion. Ocular rosacea can present in Hispanic and African American patients with severe manifestations such as corneal perforation.

  12. Prevalence and risk of migraine in patients with rosacea: A population-based cohort study.

    Science.gov (United States)

    Egeberg, Alexander; Ashina, Messoud; Gaist, David; Gislason, Gunnar H; Thyssen, Jacob P

    2017-03-01

    Rosacea features increased neurovascular reactivity; migraine is a complex neurologic disorder characterized by recurrent episodes of headache associated with nausea and increased sensitivity to light and sound. We evaluated the prevalence and risk of new-onset migraine in patients with rosacea. All Danish individuals 18 years of age or older were linked in nationwide registers. Adjusted hazard ratios (HRs) were estimated by Cox regression. In the total cohort (n = 4,361,688), there were 49,475 patients with rosacea. Baseline prevalence of migraine was 7.3% and 12.1% in the reference population and in patients with rosacea, respectively. The fully adjusted HR of migraine was 1.31 (95% confidence interval 1.23-1.39) for patients with rosacea. Patients with phymatous rosacea (n = 594) had no increased risk of migraine (adjusted HR 0.45; 95% confidence interval 0.11-1.80), whereas patients with ocular rosacea (n = 6977) had a 69% increased risk (adjusted HR 1.69; 95% confidence interval 1.43-1.99). Notably, the risk was higher among patients age 50 years or older than in younger individuals, and the risk was only significant among women. We were unable to distinguish between migraine subtypes. We found a significantly higher prevalence and risk of incident migraine especially in female patients with rosacea. These data add to the accumulating evidence for a link between rosacea and the central nervous system. Copyright © 2016 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  13. Recombinant erythroid differentiation regulator 1 inhibits both inflammation and angiogenesis in a mouse model of rosacea.

    Science.gov (United States)

    Kim, Miri; Kim, Kyung-Eun; Jung, Haw Young; Jo, Hyunmu; Jeong, Seo-Won; Lee, Jahyung; Kim, Chang Han; Kim, Heejong; Cho, Daeho; Park, Hyun Jeong

    2015-09-01

    The erythroid differentiation regulator 1 (Erdr1), which is a novel and highly conserved factor, was recently reported to be negatively regulated by IL-18 and to play a crucial role as an antimetastatic factor. IL-18 is a proinflammatory cytokine that functions as an angiogenic mediator in inflammation. Rosacea is a chronic inflammatory skin disorder that is characterized by abnormal inflammation and vascular hyperactivity of the facial skin. To determine whether Erdr1 contributes to the regulation of the chronic inflammatory process in the development of rosacea, an immunohistochemical analysis was performed in healthy donors and patients with rosacea. In this study, we showed that Erdr1 was downregulated, whereas IL-18 was upregulated, in patients with rosacea, which led us to question the role of Erdr1 in this disorder. Moreover, a rosacea-like BALB/c mouse model was used to determine the role of Erdr1 in rosacea in vivo. LL-37 injection induced typical rosacea features, including erythema, telangiectasia and inflammation. Treatment with recombinant Erdr1 (rErdr1) resulted in a significant reduction of erythema, inflammatory cell infiltration (including CD4(+) and CD8(+) T cells), and microvessel density with vascular endothelial growth factor (VEGF). Taken together, our findings suggest that rErdr1 may be involved in attenuating the inflammation and angiogenesis associated with the pathogenesis of rosacea. Thus, these results provide new insight into the mechanism involved in this condition and indicate that rErdr1 could be a potential target for therapeutic intervention of rosacea. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  14. Rosacea, Use of Tetracycline, and Risk of Incident Inflammatory Bowel Disease in Women.

    Science.gov (United States)

    Li, Wen-Qing; Cho, Eunyoung; Khalili, Hamed; Wu, Shaowei; Chan, Andrew T; Qureshi, Abrar A

    2016-02-01

    Rosacea is an inflammatory skin disease. Case reports have shown rosacea as a comorbidity of inflammatory bowel disease (IBD), but no epidemiologic studies have examined rosacea and risk of subsequent IBD. The association between tetracycline use and risk of IBD was assessed, but this study produced limited findings. We examined the association between rosacea, use of tetracycline, and risk of incident Crohn's disease (CD) and ulcerative colitis (UC). We analyzed data from 96,314 participants in the Nurses' Health Study II (1991-2011). Information on IBD was confirmed by medical review. Participants were asked in 2005 about their lifetime histories of clinician-diagnosed rosacea and year of diagnosis. Information on ever use of tetracycline was collected in 1993. During 1,856,587 person-years (1991-2011), we identified 149 cases of CD and 215 cases of UC. Rosacea was not associated with risk of UC. In contrast, rosacea was significantly associated with increased risk of subsequent CD (hazard ratio [HR], 2.20; 95% confidence interval [CI], 1.15-4.18), which appeared particularly stronger for a longer duration after a diagnosis of rosacea (Ptrend = .01). Tetracycline use was associated with increased risk of CD (HR, 1.56; 95% CI, 1.09-2.24) and UC (HR, 1.34; 95% CI, 1.00-1.80); there was a trend toward increased risk with increased duration of use (both Ptrend rosacea is associated with an increased risk of only CD. Copyright © 2016 AGA Institute. Published by Elsevier Inc. All rights reserved.

  15. Positive correlation between serum immunoreactivity to Demodex-associated Bacillus proteins and erythematotelangiectatic rosacea.

    Science.gov (United States)

    O'Reilly, N; Menezes, N; Kavanagh, K

    2012-11-01

    Rosacea is a chronic inflammatory condition that affects the skin of the face and the eyes. Erythematotelangiectatic rosacea is characterized by flushing, oedema and telangiectasia. Patients with rosacea demonstrate elevated densities of Demodex mites in their skin compared with controls. A bacterium (Bacillus oleronius) isolated from Demodex mites from a patient with papulopustular rosacea has been demonstrated to produce antigenic proteins that may play a role in papulopustular and ocular rosacea. To establish whether there was a correlation between the reactivity of sera from patients with erythematotelangiectatic rosacea to Bacillus antigens, and to characterize the proteins to which these patients showed reactivity. Serum samples from patients with erythematotelangiectatic rosacea and controls were examined for reactivity to Bacillus proteins by Western blot analysis. Proteins to which the sera reacted were excised from gels, trypsin digested, and putative identities were assigned following liquid chromatography-mass spectrometry (LC-MS) analysis. Eighty per cent (21/26) of patients with erythematotelangiectatic rosacea showed serum reactivity to the 62- and 83-kDa proteins of B. oleronius, compared with 40% (9/22) of controls (P = 0·004). The 62-kDa protein was characterized by LC-MS and showed homology to groEL chaperonin, which provokes a strong immune response in mammals. The 83-kDa protein showed homology to aconitate hydratase, of which expression is increased in bacteria under oxidative stress, and which is highly immunogenic. The majority of patients with erythematotelangiectatic rosacea show serum reactivity to two proteins from B. oleronius, suggesting that this bacterium may play a role in the induction of this condition. The two proteins to which patient sera reacted were found to be similar to a heat shock protein and an enzyme involved in regulating the stress response of the bacterium. © 2012 The Authors. BJD © 2012 British Association of

  16. Helicobacter pylori infection but not small intestinal bacterial overgrowth may play a pathogenic role in rosacea

    Science.gov (United States)

    Federico, A; Ruocco, E; Lo Schiavo, A; Masarone, M; Tuccillo, C; Peccerillo, F; Miranda, A; Romano, L; de Sio, C; de Sio, I; Persico, M; Ruocco, V; Riegler, G; Loguercio, C; Romano, M

    2015-01-01

    Background and aims Recent studies suggest a potential relationship between rosacea and Helicobacter pylori (H. pylori) infection or small intestinal bacterial overgrowth (SIBO), but there is no firm evidence of an association between rosacea and H. pylori infection or SIBO. We performed a prospective study to assess the prevalence of H. pylori infection and/or SIBO in patients with rosacea and evaluated the effect of H. pylori or SIBO eradication on rosacea. Methods We enrolled 90 patients with rosacea from January 2012 to January 2013 and a control group consisting of 90 patients referred to us because of mapping of nevi during the same period. We used the 13C Urea Breath Test and H. pylori stool antigen (HpSA) test to assess H. pylori infection and the glucose breath test to assess SIBO. Patients infected by H. pylori were treated with clarithromycin-containing sequential therapy. Patients positive for SIBO were treated with rifaximin. Results We found that 44/90 (48.9%) patients with rosacea and 24/90 (26.7%) control subjects were infected with H. pylori (p = 0.003). Moreover, 9/90 (10%) patients with rosacea and 7/90 (7.8%) subjects in the control group had SIBO (p = 0.6). Within 10 weeks from the end of antibiotic therapy, the skin lesions of rosacea disappeared or decreased markedly in 35/36 (97.2%) patients after eradication of H. pylori and in 3/8 (37.5%) patients who did not eradicate the infection (p Rosacea skin lesions decreased markedly in 6/7 (85.7%) after eradication of SIBO whereas of the two patients who did not eradicate SIBO, one (50%) showed an improvement in rosacea (p = 0.284). Conclusions Prevalence of H. pylori infection was significantly higher in patients with rosacea than control group, whereas SIBO prevalence was comparable between the two groups. Eradication of H. pylori infection led to a significant improvement of skin symptoms in rosacea patients. PMID:25653855

  17. Steroid - induced rosacea: A clinical study of 200 patients

    Directory of Open Access Journals (Sweden)

    Yasmeen J Bhat

    2011-01-01

    Full Text Available Background: Topical corticosteroids were first introduced for use in 1951. Since then uncontrolled use (abuse has caused many different reactions resembling rosacea - steroid dermatitis or iatrosacea. Multiple pathways including rebound vasodilatation and proinflammatory cytokine release have been proposed as the mechanism for such reactions. Aim: The aim was to study the adverse effects of topical steroid abuse and the response to various treatment modalities. Materials and Methods: Two hundred patients with a history of topical steroid use on face for more than 1 month were studied clinically and various treatments tried. Results: The duration of topical corticosteroid use varied from 1 month to 20 years with an average of 19.76 months. Majority of patients were using potent (class II topical steroids for trivial facial dermatoses. The common adverse effects were erythema, telangiectasia, xerosis, hyperpigmentation, photosensitivity, and rebound phenomenon. No significant change in laboratory investigations was seen. Conclusion: A combination of oral antibiotics and topical tacrolimus is the treatment of choice for steroid-induced rosacea.

  18. Tear Osmolarity and Tear Film Parameters in Patients With Ocular Rosacea.

    Science.gov (United States)

    Karaman Erdur, Sevil; Eliacik, Mustafa; Kocabora, Mehmet Selim; Balevi, Ali; Demirci, Goktug; Ozsutcu, Mustafa; Gulkilik, Gokhan; Aras, Cengiz

    2016-11-01

    The aim of this study was to evaluate tear osmolarity and tear film parameters in patients with ocular rosacea. In a single center, 25 eyes of 25 patients with ocular rosacea (group 1), 25 eyes of 25 patients with rosacea without ocular involvement (group 2), and 20 eyes of 20 healthy individuals (group 3) were evaluated using the Ocular Surface Disease Index (OSDI) questionnaire, Schirmer I test, tear film break-up time (TBUT), scoring of ocular surface fluorescein staining using modified Oxford scale, and tear osmolarity. Tear osmolarity values, OSDI and Oxford scale scores were significantly higher in group 1 than in groups 2 and 3 (Ptear osmolarity between groups 2 and 3 (P=0.629, P=0.175, P=0.713, P=865, and P=0.388, respectively). This study showed that ocular rosacea is associated with tear hyperosmolarity and tear film dysfunction.

  19. Mast cells are key mediators of cathelicidin initiated skin inflammation in rosacea

    Science.gov (United States)

    Muto, Yumiko; Wang, Zhenping; Vanderberghe, Matthieu; Two, Aimee; Gallo, Richard L.; Di Nardo, Anna

    2014-01-01

    Rosacea is a chronic inflammatory skin disease whose pathophysiological mechanism is still unclear. However, it is known that mast cell (MC) numbers is increased in the dermis of rosacea patients. MC proteases not only recruit other immune cells, which amplify the inflammatory response, but also cause vasodilation and angiogenesis. MCs are also one of the primary sources of cathelicidin LL-37 (Cath LL-37), an antimicrobial peptide that has been shown to be an enabler of rosacea pathogenesis. Here, we demonstrate that MCs are key mediators of cathelicidin initiated skin inflammation. Following Cath LL-37 injection into the dermis, MC deficient B6.Cg-KitW-sh/HNihrJaeBsmJ (KitW-sh) mice did not develop rosacea-like features. Conversely, chymase (prosacea subjects that showed a decrease in MMP activity (prosacea treatment. PMID:24844861

  20. DIFFERENTIAL DIAGNOSIS OF ROSACEA AND SKIN TUBERCULOSIS AS AN EXAMPLE OF A CLINICAL CASE

    Directory of Open Access Journals (Sweden)

    M. L. Aripova

    2014-01-01

    Full Text Available In this paper for a clinical observation of a patient with rosacea, and patients with a flat form of lupus tuberculosis presented a differential clinical diagnosis of tuberculosis of the skin.

  1. Decreased arylesterase activity and increased total Decreased arylesterase activity and increased total oxidative status in rosacea

    Directory of Open Access Journals (Sweden)

    Sertac Sener

    2017-10-01

    Full Text Available Background: Rosacea is an inflammatory skin disease of face. In recent years, it is revealed that imbalance is significant in oxidant/antioxidant system in pathophysiology. Objective: In this study, the role of oxidative stress on rosacea was investigated. Methods: 34 rosacea patients and 33 healthy control cases between 18 and 70 years old are included in the study. In all the cases, serum lipids, Paraoxonase1(PON1, stimulated Paraoxonase1(stPON1, Arylesterase(ARES, Total Oxidant Status (TOS and Total Antioxidant Status (TAS levels are measured. Results: ARES levels were significantly lower and TOS levels were significantly higher in the patient group (p<0,001. Oxidative Stress Index(OSI was found to be shifted towards the oxidative side in the patient group (p<0,001. Conclusion: This situation shows that oxidative stress may have a role in the rosacea pathophysiology

  2. Subjective disease perception and symptoms of depression in relation to healthcare-seeking behaviour in patients with rosacea.

    Science.gov (United States)

    Abram, Kristi; Silm, Helgi; Maaroos, Heidi-Ingrid; Oona, Marje

    2009-01-01

    Many patients with rosacea do not seek medical care. The aim of this study was to find predictors for healthcare-seeking behaviour among patients with rosacea. The study subjects were 70 consecutive patients attending a dermatologist (seekers) and 56 subjects with rosacea symptoms selected randomly from among the working population (non-seekers). All subjects completed an Estonian Mood Scale questionnaire, a screening instrument for depressive symptoms, and evaluated their subjective disease perception on a visual analogue scale (VAS). Multivariate analysis showed that the independent predictors for healthcare-seeking behaviour were VAS scores >5 and the presence of advanced forms of rosacea. Higher mean VAS scores were not related to severity of rosacea, but were associated with the presence of depressive symptoms among seekers. In conclusion, healthcare-seeking behaviour is associated with higher subjective disease perception. The presence of depressive symptoms is not related to severity of the disease, but to the subjective disease perception of rosacea patients.

  3. Augmented supraorbital skin sympathetic nerve activity responses to symptom trigger events in rosacea patients.

    Science.gov (United States)

    Metzler-Wilson, Kristen; Toma, Kumika; Sammons, Dawn L; Mann, Sarah; Jurovcik, Andrew J; Demidova, Olga; Wilson, Thad E

    2015-09-01

    Facial flushing in rosacea is often induced by trigger events. However, trigger causation mechanisms are currently unclear. This study tested the central hypothesis that rosacea causes sympathetic and axon reflex-mediated alterations resulting in trigger-induced symptomatology. Twenty rosacea patients and age/sex-matched controls participated in one or a combination of symptom triggering stressors. In protocol 1, forehead skin sympathetic nerve activity (SSNA; supraorbital microneurography) was measured during sympathoexcitatory mental (2-min serial subtraction of novel numbers) and physical (2-min isometric handgrip) stress. In protocol 2, forehead skin blood flow (laser-Doppler flowmetry) and transepithelial water loss/sweat rate (capacitance hygrometry) were measured during sympathoexcitatory heat stress (whole body heating by perfusing 50°C water through a tube-lined suit). In protocol 3, cheek, forehead, forearm, and palm skin blood flow were measured during nonpainful local heating to induce axon reflex vasodilation. Heart rate (HR) and mean arterial pressure (MAP) were recorded via finger photoplethysmography to calculate cutaneous vascular conductance (CVC; flux·100/MAP). Higher patient transepithelial water loss was observed (rosacea 0.20 ± 0.02 vs. control 0.10 ± 0.01 mg·cm(-2)·min(-1), P rosacea and controls, respectively) stress was augmented in rosacea (both P rosacea compared with controls. No axon reflex vasodilation differences were observed between groups. These data indicate that rosacea affects SSNA and that hyperresponsiveness to trigger events appears to have a sympathetic component. Copyright © 2015 the American Physiological Society.

  4. The role of brimonidine tartrate gel in the treatment of rosacea

    Directory of Open Access Journals (Sweden)

    Jackson JM

    2015-10-01

    Full Text Available J Mark Jackson,1 Melissa Knuckles,2 John Paul Minni,3 Sandra Marchese Johnson,4, Kevin Tate Belasco5 1Division of Dermatology, University of Louisville, Louisville, KY, USA; 2PSC, Dermatology, Corbin, KY, USA; 3Waters Edge Dermatology, Stuart, FL, USA; 4Johnson Dermatology, Fort Smith, AR, USA; 5Blue Harbor Dermatology, Newport Beach, CA, USA Abstract: Rosacea is a chronic cutaneous condition with a prevalence rate ranging from 9.6% to 22% in recent studies. Facial erythema (transient and permanent is considered a common denominator that is frequently observed in all subtypes of rosacea and is estimated to affect more than 40 million people worldwide. Brimonidine tartrate is a selective α2-adrenergic receptor agonist and is the first topical treatment approved for facial erythema of rosacea. Clinical trials have demonstrated that brimonidine tartrate provided significantly greater efficacy, compared to vehicle, for the treatment of moderate to severe erythema of rosacea. In addition, brimonidine tartrate has demonstrated a rapid onset of effect, duration of action throughout the day, and good safety profile in studies of up to 1 year. This review critically discusses the role of brimonidine tartrate for the treatment of facial erythema of rosacea by examining both clinical study data and real-world dermatologist experiences across a wide spectrum of treated patients, and concludes that it is a significant therapeutic option in the management of an unmet need of this chronic condition. Keywords: rosacea, brimonidine tartrate, erythema, adverse event

  5. Personal history of rosacea and risk of incident cancer among women in the US.

    Science.gov (United States)

    Li, W-Q; Zhang, M; Danby, F W; Han, J; Qureshi, A A

    2015-07-28

    Rosacea is an inflammatory skin disease. We examined the association between personal history of rosacea and risk of incident cancers. A total of 75 088 whites were included from the Nurses' Health Study II (1991-2011). Information on clinician-diagnosed rosacea and diagnosis year was collected in 2005. All cancers other than basal cell carcinoma (BCC) were confirmed. During 1 447 205 person-years, we identified 5194 cases with internal malignancies and 5788 with skin cancers. We did not observe significant associations between personal history of rosacea and internal malignancies, except for thyroid cancer (hazard ratio (HR)=1.59, 95% confidence interval (CI)=1.07-2.36). Among skin cancers, personal history of rosacea was associated with an elevated risk of BCC (HR=1.50, 95% CI=1.35-1.67). We suggest possible associations between personal history of rosacea and an increased risk of thyroid cancer and BCC. Further studies are warranted to replicate our findings and to explore the underlying mechanisms.

  6. Assessment of rosacea severity: A review of evaluation methods used in clinical trials.

    Science.gov (United States)

    Hopkinson, Dennis; Moradi Tuchayi, Sara; Alinia, Hossein; Feldman, Steven R

    2015-07-01

    Novel rosacea treatments are needed. Assessment methodologies for clinical trials of rosacea treatments are not standardized and are relatively inadequate. To determine the efficacy of new treatments, a valid and reliable assessment methodology is needed. We sought to determine the assessment methodologies used in clinical trials for rosacea treatments, to demonstrate the need for a valid and reliable assessment tool, and to describe the relevant properties of such a tool. PubMed and MEDLINE were searched for clinical trials of rosacea treatments since January 1, 1985. In all, 32 clinical trials met inclusion criteria. Assessment methodologies were highly variable, and standardized assessment methodologies were used in only 3 studies. The various manifestations of rosacea were assessed inconsistently. Eighteen articles could not be included as a result of lack of access to the full text. The diverse methodologies make the assessment of novel treatments and comparison of treatments difficult. A valid and reliable assessment tool is needed to properly assess novel treatments to improve the management of rosacea. Copyright © 2015 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  7. Advances in the topical treatment of acne and rosacea.

    Science.gov (United States)

    Ceilley, Roger I

    2004-01-01

    Acne and rosacea are common skin diseases which may present similarly and both involve inflammation. Both can result in significant cosmetic impairment and lead to quality of life decrements if not optimally treated. The conventional approach for both diseases involves the use of topical therapy to treat inflammatory lesions in combination, when needed, with a systemic or topical antibiotic. An important issue in the management of both diseases at present is the need to reduce antibiotic usage due to the increasing problem of bacterial resistance. One of the emerging treatment paradigms that is becoming increasingly useful as an antibiotic-sparing strategy is the use of procedural therapies in combination with medical management. Such procedural modalities include lasers, intense pulsed light (IPL), and photodynamic therapies (PDT). Topical regimens are used pre-treatment and following physical modalities for maintenance of remission.

  8. Rate of Adverse Events and Healthcare Costs Associated with the Topical Treatment of Rosacea.

    Science.gov (United States)

    Williamson, Todd; Kamalakar, Rajesh; Ogbonnaya, Augustina; Zagadailov, Erin A; Eaddy, Michael; Kreilick, Charlie

    2017-05-01

    Rosacea is a condition more common in women than in men, and in people aged ≥30 years than in younger patients. Adverse events associated with the use of topical medications for rosacea may lead to a lack of treatment adherence. Previous studies have reported low treatment adherence rates among patients with rosacea. To describe the rate of treatment discontinuation resulting from adverse events and the associated healthcare costs among patients with rosacea who are receiving a topical medication. We conducted a retrospective cohort study of patients diagnosed with rosacea based on International Classification of Diseases, Ninth Revision, Clinical Modification code 695.3 who were newly initiating topical treatment with metronidazole, azelaic acid, sodium sulfacetamide/sulfur, or benzoyl peroxide between January 1, 2009, and September 30, 2013. Patients were identified from the MarketScan Commercial Claims and Encounters database and the Medicare Supplemental database and had to be aged ≥30 years, have continuous coverage with medical and pharmacy benefits ≥12 months before treatment and ≥3 months after treatment inititation, and have no evidence of oral antibiotic use or ocular rosacea during the study period. The 3-month period immediately after the index date (ie, first topical rosacea treatment) was defined as the postindex period and was used to evaluate the outcome measures, which included the rate of adverse events, treatment patterns, and healthcare costs. The final cohort included 49,351 patients, with a mean age of 54 years, and 74.5% of the patients were female. Metronidazole was the most common (72.7%) treatment, followed by azelaic acid (21.7%), sodium sulfacetamide/sulfur (3.4%), and benzoyl peroxide (2.2%). A total of 6270 (12.7%) patients had a coded adverse event, of whom 199 (3.2%) continued treatment despite the adverse event, 466 (7.4%) switched to another treatment within 8.8 days, and 5605 (89.4%) discontinued therapy within 31.1 days

  9. A Guide to the Ingredients and Potential Benefits of Over-the-Counter Cleansers and Moisturizers for Rosacea Patients

    Science.gov (United States)

    Miller, Richard

    2011-01-01

    It is difficult for rosacea patients to discern which products and ingredients will be beneficial to their skin and which products will lead to an exacerbation of the signs and symptoms of rosacea. In this paper, the authors provide a brief overview of rosacea, its pathogenesis, signs and symptoms, and the management of the two major rosacea subtypes—erythematotelangiectatic rosacea and papular pustular rosacea. Reviewed in greater detail are the common ingredients used in over-the-counter cleansers and moisturizers with discussion of how these ingredients potentially benefit or harm the skin of patients with rosacea. Clinical studies investigating the benefits of using certain over-the-counter cleansers and moisturizers in patients with erythematotelangiectatic rosacea and papular pustular rosacea with or without topical prescription therapy are also reviewed. The specific formulas used in the clinical studies include a sensitive skin synthetic detergent bar, a nonalkaline cleanser and moisturizer, polyhydroxy acid containing cleanser and moisturizer, and a ceramide-based cleanser and moisturizer formulated in a multivesicular emulsion. Based on review of available data, the authors conclude that the use of mild over-the-counter cleansers and moisturizers is beneficial for patients with erythematotelangiectatic rosacea and papular pustular rosacea. The properties of over-the-counter cleansers and moisturizers that contribute to their mildness include an acidic-neutral pH to minimize the flux in skin pH; surfactants or emulsifiers that will not strip the skin of its moisture or strip the lipids and proteins of the stratum corneum; moisturizing ingredients such as emollients, humectants, and occlusives; and formulas without potential irritants and allergens. The most consistent clinical benefits demonstrated in the reviewed studies were a subjectively perceived improvement in subjective symptoms of dryness and irritation as well as an objective improvement in

  10. Rosacea: The Blessing of the Celts - An Approach to Pathogenesis Through Translational Research.

    Science.gov (United States)

    Melnik, Bodo C

    2016-02-01

    Increased expression of cathelicidin antimicrobial peptide (CAMP) is related to the pathogenesis of rosacea. CAMP plays a crucial role in antimicrobial defences, such as the killing of mycobacteria. CAMP gene expression is regulated by vitamin D-dependent (VDR) and vitamin D-independent (C/EBPα) transcription factors. VDR-dependent CAMP expression is sufficient during the summer months in Nordic countries, but insufficient during Nordic winters, due to low ultraviolet (UV) levels. Historically, the Celts may have overcome this geographical disadvantage of deficient CAMP production during the winter through an as-yet undefined acquired mutation that activates the alternative vitamin D-independent CAMP promoter C/EBPα. C/EBPα is the downstream transcription factor of Toll-like receptor (TLR)-mediated innate immune reactions and endoplasmic reticulum (ER) stress responses. At the molecular level, all clinical trigger factors for rosacea can be regarded as ER stressors. A mutation-based upregulation of ER stress responsiveness in rosacea may thus explain patients' reduced threshold for ER stressors. It is notable that ER stress upregulates the potent lipid-mediator sphingosine-1-phosphate (S1P), which explains multiple pathological aberrations observed in rosacea skin. Enhanced ER stress/S1P signalling in rosacea appears to compensate for insufficient VDR-dependent CAMP expression, maintaining adequate CAMP levels during UV-deficient winter to combat life-threatening microbial infections, such as lupus vulgaris. Therefore, rosacea should not be considered as a disadvantage, but as evolution's blessing of the Celts which improved their survival. The concept presented here also explains the mechanism of Finsen's UV treatment of lupus vulgaris by UV- and ER stress-mediated upregulation of CAMP expression. Rosacea could therefore be described as the Celts' "inborn Finsen lamp".

  11. Interventions for rosacea: abridged updated Cochrane systematic review including GRADE assessments.

    Science.gov (United States)

    van Zuuren, E J; Fedorowicz, Z

    2015-09-01

    Rosacea is a common chronic facial dermatosis. This update of our Cochrane review on interventions for rosacea summarizes the evidence, including Grading of Recommendations Assessment, Development and Evaluation (GRADE) Working Group assessments, of the effects of the currently available treatments. Searches included the following: Cochrane Skin Group Specialised Register, CENTRAL in The Cochrane Library, MEDLINE, EMBASE, LILACS and the Science Citation Index, and ongoing trials registries (July 2014). We included 106 randomized controlled trials (RCTs) with 13 631 participants, a more than 80% increase since the last update in 2011. Pooling of data was feasible for a few outcomes, for topical metronidazole and azelaic acid and both appeared to be more effective than placebo (moderate and high-quality evidence, respectively). Topical ivermectin was more effective than placebo based on two studies (high-quality evidence), and slightly more effective than metronidazole in one study. Brimonidine was more effective than vehicle in reducing erythema in rosacea (high-quality evidence). Ciclosporin ophthalmic emulsion was effective for ocular rosacea (low-quality evidence). For oral treatments there was moderate-quality evidence for the effectiveness of tetracycline based on two old studies, and high-quality evidence for doxycycline 40 mg compared with placebo according to physician assessments. One study at high risk of bias demonstrated equivalent effectiveness for azithromycin and doxycycline 100 mg. Minocycline 45 mg may be effective for papulopustular rosacea (low-quality evidence). Low-dose isotretinoin appeared to be slightly more effective than doxycycline 50-100 mg (high-quality evidence). Laser and light-based therapies for erythema in rosacea were effective (low-quality evidence). Further RCTs are required for ocular rosacea. © 2015 British Association of Dermatologists.

  12. The role of brimonidine tartrate gel in the treatment of rosacea.

    Science.gov (United States)

    Jackson, J Mark; Knuckles, Melissa; Minni, John Paul; Johnson, Sandra Marchese; Belasco, Kevin Tate

    2015-01-01

    Rosacea is a chronic cutaneous condition with a prevalence rate ranging from 9.6% to 22% in recent studies. Facial erythema (transient and permanent) is considered a common denominator that is frequently observed in all subtypes of rosacea and is estimated to affect more than 40 million people worldwide. Brimonidine tartrate is a selective α2-adrenergic receptor agonist and is the first topical treatment approved for facial erythema of rosacea. Clinical trials have demonstrated that brimonidine tartrate provided significantly greater efficacy, compared to vehicle, for the treatment of moderate to severe erythema of rosacea. In addition, brimonidine tartrate has demonstrated a rapid onset of effect, duration of action throughout the day, and good safety profile in studies of up to 1 year. This review critically discusses the role of brimonidine tartrate for the treatment of facial erythema of rosacea by examining both clinical study data and real-world dermatologist experiences across a wide spectrum of treated patients, and concludes that it is a significant therapeutic option in the management of an unmet need of this chronic condition.

  13. The role of brimonidine tartrate gel in the treatment of rosacea

    Science.gov (United States)

    Jackson, J Mark; Knuckles, Melissa; Minni, John Paul; Johnson, Sandra Marchese; Belasco, Kevin Tate

    2015-01-01

    Rosacea is a chronic cutaneous condition with a prevalence rate ranging from 9.6% to 22% in recent studies. Facial erythema (transient and permanent) is considered a common denominator that is frequently observed in all subtypes of rosacea and is estimated to affect more than 40 million people worldwide. Brimonidine tartrate is a selective α2-adrenergic receptor agonist and is the first topical treatment approved for facial erythema of rosacea. Clinical trials have demonstrated that brimonidine tartrate provided significantly greater efficacy, compared to vehicle, for the treatment of moderate to severe erythema of rosacea. In addition, brimonidine tartrate has demonstrated a rapid onset of effect, duration of action throughout the day, and good safety profile in studies of up to 1 year. This review critically discusses the role of brimonidine tartrate for the treatment of facial erythema of rosacea by examining both clinical study data and real-world dermatologist experiences across a wide spectrum of treated patients, and concludes that it is a significant therapeutic option in the management of an unmet need of this chronic condition. PMID:26566370

  14. Are Demodex mites principal, conspirator, accomplice, witness or bystander in the cause of rosacea?

    Science.gov (United States)

    Chen, WenChieh; Plewig, Gerd

    2015-04-01

    As the only permanent human ectoparasite, the role of human Demodex mites in health and diseases remains largely unclarified. In view of the ecological interaction between organisms of two different species, a type of commensalism between Demodex mites and humans (the former benefit, the latter unaffected) is most likely, while parasitism occurs temporarily and spatially in the diseased state (the former benefit, the latter harmed). As part of normal skin microbiota, the causal role of Demodex mites in the initiation of rosacea can neither fulfill the classical Henle-Koch's principal nor the advanced criteria proposed by Fredericks and Relman for molecular detection of non-cultivatable microorganisms. Epidemiological analysis using Hill's criteria fails to support the causative role of Demodex mites in rosacea regarding the strength of association, specificity and temporality of association, biological gradient and plausibility as well as clinical coherence, therapeutic experimentation and medical analogy. In application of Rothman's sufficient cause model to evaluate the contribution of Demodex mites to rosacea on a population basis, Demodex mites can be regarded as a non-necessary, non-sufficient causal factor for certain forms of rosacea. Further strategies to dissect the association between Demodex mites and rosacea may include studying the possible existence of more virulent forms of mites with a higher pathogenicity, the endosymbiotic bacteria in certain life periods of mites, the interactions between mites and human hosts or between mites and environment, and to set up ex vivo culture models for Demodex mites.

  15. Demodex folliculorum: its association with oily skin surface rather than rosacea lesions.

    Science.gov (United States)

    Porta Guardia, Carlos A

    2015-01-01

    Despite the predilection of Demodex folliculorum (DF) for human sebum, observational studies addressing a relationship between this agent and rosacea paid no attention to the effect of a potentially acting confounder, the oily nature of the skin. To analyze whether a relationship exists between the presence of the mite in rosacea and oily cutis. An observational study on 63 rosacea cases and 61 healthy controls, both discriminated according to their predominance of oily or dry cutis, was carried out to investigate demodectic density by the skin surface biopsy. While comparisons on the density of DF revealed no differences between patients and controls (Mann-Whitney U-test, P = 0.35), persons with an oily cutis had increased amounts of this mite on the skin surface (Mann-Whitney U-test, P rosacea or not. The association between DF and oily skin rather than rosacea lesions gives no support for this agent being implied in disease pathogenesis. © 2014 The International Society of Dermatology.

  16. [NEW OPPORTUNITIES OF IPL-THERAPY IN COMPLEX TREATMENT OF THE ROSACEA VASCULAR FORMS].

    Science.gov (United States)

    Svyatenko, T; Starostina, O

    2015-06-01

    From the numerous reasons of emergence of an eritema, face skin teleangiektaziya, the particular interest in practice of dermatovenereologists, cosmetologists represents such widespread disease, as a rosacea. Despite well described clinical stages of a disease and the fulfilled protocols of treatment, early manifestations of this pathology very often remain not distinguished. It promotes progressing of a disease and transition to heavier clinical forms. Pathogenesis the rosacea is considered as angioneurosis vessels of the person with prevalence of venous insufficiency. Prevalence of a rosacea among patients who address to dermatologists, to cosmetologists, causes need for development of correct protocols of prevention and treatment of these states with use of modern knowledge and equipment. Data of own supervision of authors in the period of 2014-2015 for 26 patients at the age of 23-49 years with a vascular form of a rosacea whom complex therapy joined an IPL technique are provided in article. Considering the available own experience of use of IPL systems, authors came to a conclusion that the technique conforms to all safety requirements and increases efficiency of treatment of a vascular form of a rosacea.

  17. Rosaceae products: Anthocyanin quality and comparisons between dietary supplements and foods

    Directory of Open Access Journals (Sweden)

    Jungmin Lee

    2016-10-01

    Full Text Available Rosaceae (strawberry, cherry, blackberry, red raspberry, and black raspberry dietary supplements and food products (total n = 74 were purchased and analyzed to determine their anthocyanin concentrations and profiles. Eight of the 33 dietary supplements had no detectable anthocyanins (five samples or were adulterated with anthocyanins from unlabeled sources (three samples. Five of 41 food products contained no detectable anthocyanins. In mg per serving, the dietary supplements tested contained 0.02–86.27 (average 10.00, and food products contained 0.48–39.66 (average 7.76. Anthocyanin levels between the dietary supplements and food products were not significantly different in mg per serving. Individual anthocyanin profiles can be used to evaluate quality of Rosaceae food products and dietary supplements. These findings show that increasing anthocyanin content and reducing adulteration could improve the quality of Rosaceae products available in the marketplace.

  18. New developments in the treatment of rosacea – role of once-daily ivermectin cream

    Science.gov (United States)

    Cardwell, Leah A; Alinia, Hossein; Moradi Tuchayi, Sara; Feldman, Steven R

    2016-01-01

    Rosacea is a chronic dermatological disorder with a variety of clinical manifestations localized largely to the central face. The unclear etiology of rosacea fosters therapeutic difficulty; however, subtle clinical improvement with pharmacologic treatments of various drug categories suggests a multifactorial etiology of the disease. Factors that may contribute to disease pathogenesis include immune abnormality, vascular abnormality, neurogenic dysregulation, presence of cutaneous microorganisms, UV damage, and skin barrier dysfunction. The role of ivermectin in the treatment of rosacea may be as an anti-inflammatory and anti-parasitic agent targeting Demodex mites. In comparing topical ivermectin and metronidazole, ivermectin was more effective; this treatment modality boasted more improved quality of life, reduced lesion counts, and more favorable participant and physician assessment of disease severity. Patients who received ivermectin 1% cream had an acceptable safety profile. Ivermectin is efficacious in decreasing inflammatory lesion counts and erythema. PMID:27051311

  19. New developments in the treatment of rosacea - role of once-daily ivermectin cream.

    Science.gov (United States)

    Cardwell, Leah A; Alinia, Hossein; Moradi Tuchayi, Sara; Feldman, Steven R

    2016-01-01

    Rosacea is a chronic dermatological disorder with a variety of clinical manifestations localized largely to the central face. The unclear etiology of rosacea fosters therapeutic difficulty; however, subtle clinical improvement with pharmacologic treatments of various drug categories suggests a multifactorial etiology of the disease. Factors that may contribute to disease pathogenesis include immune abnormality, vascular abnormality, neurogenic dysregulation, presence of cutaneous microorganisms, UV damage, and skin barrier dysfunction. The role of ivermectin in the treatment of rosacea may be as an anti-inflammatory and anti-parasitic agent targeting Demodex mites. In comparing topical ivermectin and metronidazole, ivermectin was more effective; this treatment modality boasted more improved quality of life, reduced lesion counts, and more favorable participant and physician assessment of disease severity. Patients who received ivermectin 1% cream had an acceptable safety profile. Ivermectin is efficacious in decreasing inflammatory lesion counts and erythema.

  20. [Demodex folliculorum: aetiopathogenesis and therapy of rosacea and perioral dermatitis (author's transl)].

    Science.gov (United States)

    Rufli, T; Mumcuoglu, Y; Cajacob, A; Büchner, S

    1981-01-01

    In 16 out of 18 patients with rosacea, mites of the species, Demodex folliculorum were isolated in mostly great numbers from lesions of the facial skin. In patients with perioral dermatitis, the mite was demonstrated in 17 out of 29 patients. All patients, however, including those where no mites were found, could be completely cured by nightly application of hexachlorocyclohexane 0.25% (Jacutin). The average treatment time was 7 weeks for rosacea and 5 weeks for perioral dermatitis. 2 patients with rosacea and 4 patients with perioral dermatitis relapsed, but cleared again after treatment was repeated. The initial flare-up of the dermatitis, which is observed regularly after starting the Jacutin-therapy, is described. Quantitative aspects of Demodex infestation and its histopathological alterations are discussed in relation to present-day knowledge.

  1. Association of Rosacea With Risk for Glioma in a Danish Nationwide Cohort Study

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Hansen, Peter R; Gislason, Gunnar H

    2016-01-01

    IMPORTANCE: Rosacea, a common facial skin disorder, has a poorly understood pathogenesis in which increased matrix metalloproteinase activity might play an important role. Glioma accounts for 80% of all primary malignant tumors in the central nervous system, and these tumors also show upregulation...... of certain matrix metalloproteinases. OBJECTIVE: To investigate the association between rosacea and the risk for glioma. DESIGN, SETTING, AND PARTICIPANTS: Nationwide cohort study of the Danish population from individual-level linkage of administrative registers. All Danish citizens 18 years or older from...... January 1, 1997, to December 31, 2011, were eligible for inclusion. A total of 5 484 910 individuals were eligible for analysis; of these, 68 372 had rosacea and 5 416 538 constituted the reference population. Data were analyzed from July 14 to August 10, 2015. MAIN OUTCOMES AND MEASURES: The outcome...

  2. Correlation between ocular Demodex infestation and serum immunoreactivity to Bacillus proteins in patients with Facial rosacea.

    Science.gov (United States)

    Li, Jianjing; O'Reilly, Niamh; Sheha, Hosam; Katz, Raananah; Raju, Vadrevu K; Kavanagh, Kevin; Tseng, Scheffer C G

    2010-05-01

    To investigate correlation between ocular Demodex infestation and serum. A prospective study to correlate clinical findings with laboratory data. We consecutively enrolled 59 patients: 34 men and 25 women with a mean age of 60.4+/-17.6 years (range, 17-93). Demodex counting was performed based on lash sampling. Serum immunoreactivity to two 62-kDa and 83-kDa proteins derived from B oleronius was determined by Western blot analysis. Facial rosacea, lid margin, and ocular surface inflammation were documented by photography and graded in a masked fashion. Statistical significance based on correlative analyses of clinical and laboratory data. These 59 patients were age matched, but not gender matched, regarding serum immunoreactivity, ocular Demodex infestation, or facial rosacea. There was a significant correlation between serum immunoreactivity and facial rosacea (P = 0.009), lid margin inflammation (P = 0.040), and ocular Demodex infestation (P = 0.048), but not inferior bulbar conjunctival inflammation (P = 0.573). The Demodex count was significantly higher in patients with positive facial rosacea (6.6+/-9.0 vs. 1.9+/-2.2; P = 0.014). There was a significant correlation of facial rosacea with lid margin inflammation (P = 0.016), but not with inferior bulbar conjunctival inflammation (P = 0.728). Ocular Demodex infestation was less prevalent in patients with aqueous tear-deficiency dry eye than those without (7/38 vs. 12/21; P = 0.002). The strong correlation provides a better understanding of comorbidity between Demodex mites and their symbiotic B oleronius in facial rosacea and blepharitis. Treatments directed to both warrant future investigation. Copyright 2010 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved.

  3. Correlation between Ocular Demodex Infestation and Serum Immunoreactivity to Bacillus Proteins in Patients with Facial Rosacea

    Science.gov (United States)

    Li, Jianjing; O'Reilly, Niamh; Sheha, Hosam; Katz, Raananah; Raju, Vadrevu K.; Kavanagh, Kevin; Tseng, Scheffer C. G.

    2010-01-01

    Purpose To investigate correlation between ocular Demodex infestation and serum. Design A prospective study to correlate clinical findings with laboratory data. Participants We consecutively enrolled 59 patients: 34 men and 25 women with a mean age of 60.4±17.6 years (range, 17–93). Methods Demodex counting was performed based on lash sampling. Serum immunoreactivity to two 62-kDa and 83-kDa proteins derived from B oleronius was determined by Western blot analysis. Facial rosacea, lid margin, and ocular surface inflammation were documented by photography and graded in a masked fashion. Main Outcome Measures Statistical significance based on correlative analyses of clinical and laboratory data. Results These 59 patients were age matched, but not gender matched, regarding serum immunoreactivity, ocular Demodex infestation, or facial rosacea. There was a significant correlation between serum immunoreactivity and facial rosacea (P = 0.009), lid margin inflammation (P = 0.040), and ocular Demodex infestation (P = 0.048), but not inferior bulbar conjunctival inflammation (P = 0.573). The Demodex count was significantly higher in patients with positive facial rosacea (6.6±9.0 vs. 1.9±2.2; P = 0.014). There was a significant correlation of facial rosacea with lid margin inflammation (P = 0.016), but not with inferior bulbar conjunctival inflammation (P = 0.728). Ocular Demodex infestation was less prevalent in patients with aqueous tear-deficiency dry eye than those without (7/38 vs. 12/21; P = 0.002). Conclusions The strong correlation provides a better understanding of comorbidity between Demodex mites and their symbiotic B oleronius in facial rosacea and blepharitis. Treatments directed to both warrant future investigation. PMID:20079929

  4. Effective and evidence-based management strategies for rosacea: summary of a Cochrane systematic review.

    Science.gov (United States)

    van Zuuren, E J; Kramer, S F; Carter, B R; Graber, M A; Fedorowicz, Z

    2011-10-01

    Rosacea is a common chronic skin disease affecting the face. There are numerous treatment options, but it is unclear which are the most effective. The aim of this review was to assess the evidence for the efficacy and safety of treatments for rosacea. Searches included the Cochrane Skin Group Specialised Register, the Cochrane Central Register of Controlled Trials in The Cochrane Library, MEDLINE, EMBASE, Science Citation Index, and Ongoing Trials Registers (updated February 2011). Randomized controlled trials in people with moderate to severe rosacea were included. Fifty-eight trials, including 27 from the original review, comprising 6633 participants were included in this updated review. Interventions included topical metronidazole, oral antibiotics, topical azelaic cream or gel, topical benzoyl peroxide and/or combined with topical antibiotics, sulphacetamide/sulphur, and others. There was some evidence that topical metronidazole and azelaic acid were more effective than placebo. Two trials indicated that doxycycline 40mg was more effective than placebo. There was no statistically significant difference in effectiveness between doxycycline 40mg and 100mg but there were fewer adverse effects. One study reported that ciclosporin ophthalmic emulsion was significantly more effective than artificial tears for treating ocular rosacea. Although the majority of included studies were assessed as being at high or unclear risk of bias, there was some evidence to support the effectiveness of topical metronidazole, azelaic acid and doxycycline (40mg) in the treatment of moderate to severe rosacea, and ciclosporin 0·05% ophthalmic emulsion for ocular rosacea. Further well-designed, adequately powered randomized controlled trials are required. © 2011 The Authors. BJD © 2011 British Association of Dermatologists 2011.

  5. Treatment of ocular rosacea:comparative study of topical cyclosporine and oral doxycycline

    Directory of Open Access Journals (Sweden)

    Aysegul Arman

    2015-06-01

    Full Text Available AIM:To compare the effectiveness of topical cyclosporine A emulsion with that of oral doxycycline for rosacea associated ocular changes and dry eye complaints.METHODS:One hundred and ten patients with rosacea were screened. Thirty-eight patients having rosacea associated eyelid and ocular surface changes and dry eye complaints were included in the study. Patients were randomly divided into two groups:nineteen patients were given topical cyclosporine twice daily and nineteen patients were given oral doxycycline 100 mg twice daily for the first month and once daily for the following two months. Symptom and sign scores, ocular surface disease index questionnarie and tear function tests were evaluated at baseline and monthly for 3mo. Three months after results were compared with that of baseline.RESULTS:Mean values of symptom, eyelid sign and corneal/conjunctival sign scores of each treatment group at baseline and 3mo after treatments were compared and both drugs were found to be effective on rosacea associated ocular changes (P<0.001. Cyclosporine was more effective in symptomatic relief and in the treatment of eyelid signs (P=0.01. There was statistically significant increase in the mean Schirmer score with anesthesia and tear break up time scores in the cyclosporine treatment group compared to the doxycycline treatment group (P<0.05.CONCLUSION:Cyclosporine as a topical drug can be used in the treatment of rosacea associated ocular complications because it is more effective than doxycycline. In addition ocular rosacea as a chronic disease requires long term treatment and doxycycline has various side effects limiting its long term usage.

  6. New record of Lobophora rosacea (Dictyotales; Phaeophyceae) from the South China Sea

    Science.gov (United States)

    Sun, Zhongmin; Wang, Yongqiang; Yan, Pengcheng; Guo, Hui; Yao, Jianting; Tanaka, Jiro; Kawai, Hiroshi

    2017-01-01

    Lobophora rosacea C.W. Vieira, Payri et De Clerck is reported from the South China Sea for the first time. Our specimens are very similar to L. rosacea recently described from New Caledonia, not only in morphology but also in rbcL and cox3 gene sequences. The fan-shaped thallus grows erectly, attaching to the substrate by a basal holdfast. The thallus is composed of a single layer of large medullary cells and three to four layers of cortical cells on both sides of the medulla. Mature sporophytes are detected, with sporangium sori scattered on both surfaces of the thallus.

  7. Risk of inflammatory bowel disease in patients with rosacea: Results from a nationwide cohort study in Taiwan.

    Science.gov (United States)

    Wu, Chun-Ying; Chang, Yun-Ting; Juan, Chao-Keui; Shieh, Jeng-Jer; Lin, Yu-Pu; Liu, Han-Nan; Lin, Jaw-Town; Chen, Yi-Ju

    2017-05-01

    A link between rosacea and inflammatory bowel disease (IBD) has been proposed with unknown mechanisms. Epidemiologic evidence of this association needs to be examined. In this nationwide cohort study, a total of 89,356 patients with rosacea and 178,712 matched patients without rosacea between 1997 and 2013 were identified in the Taiwanese National Health Insurance Research Database. Cumulative incidences of IBD were compared between these 2 cohorts. Frailty Cox proportional hazard model was used and subgroup analyses were conducted to examine the risk factors for IBD. The 15-year cumulative incidences of IBD were 0.036% (95% confidence interval [CI] 0.00%-1.57%) and 0.019% (95% CI 0.00%-0.83%) in rosacea and nonrosacea cohorts, respectively (P = .05). Rosacea (adjusted hazard ratio 1.94, 95% CI 1.04-3.63, P = .04) and male gender (adjusted hazard ratio 3.52, 95% CI 2.03-6.11, P rosacea, but without statistical significance. Information related to lifestyle, diet, alcohol, and smoking was not included in the database. Patients with rosacea may have an increased risk of IBD. Copyright © 2016 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  8. Additional evidence that rosacea pathogenesis may involve demodex: new information from the topical efficacy of ivermectin and praziquantel.

    Science.gov (United States)

    Abokwidir, Manal; Fleischer, Alan B

    2015-09-17

    Additional evidence that Demodex folliculorum may contribute to the pathogenesis of papulopustular rosacea are new studies of two topical antiparasitic agents. Ivermectin and praziquantel have recently been shown to be effective in decreasing the severity of papulopustular rosacea. These two agents significantly differ in molecular structure, but yield similar antiparasitic mechanisms of action. Higher numbers of Demodex mites are found in the skin of patients with rosacea than in people with normal skin. If Demodex play a role in pathogenesis, then hypersensitivity to the mites, their flora, or their products could explain the observed efficacy of antidemodectic therapy.

  9. Karyotype Analysis in Wild Diploid, Tetraploid, and Hexaploid Strawberries, Fragaria (Rosaceae)

    Science.gov (United States)

    The Strawberry, genus Fragaria (Rosaceae) has a basic chromosome count of x = 7, and is comprised of 20 wild species having an euploid series from diploid (2n = 2x = 14) through decaploid (2n = 10x = 70). Few karyotypes of species in this genus have been reported. The objective of this research was ...

  10. Group IIA phospholipase A(2) concentration of tears in patients with ocular rosacea.

    Science.gov (United States)

    Kari, Osmo; Aho, Valtteri V; Peltonen, Sirje; Saari, Jukka M; Kari, Marjatta; Määttä, Marko; Collan, Yrjö; Saari, K Matti

    2005-08-01

    To determine the concentration of group IIA phospholipase A(2) (GIIAPLA(2)) in tears of patients with ocular rosacea, and to compare it with GIIAPLA(2) concentration in tears of age-matched healthy controls. The GIIAPLA(2) concentration in tears was measured with a time-resolved fluoroimmunoassay in 21 patients with ocular rosacea (mean age 55.6+/-9.2 years) and in 21 normal subjects (mean age 53.4+/-8.2 years). Conjunctival brush cytology was carried out and eosinophils, neutrophils, lymphocytes, squamous epithelial cells, columnar epithelial cells, metaplastic changes and goblet cells were calculated separately. The GIIAPLA (2) concentration in tears was statistically significantly lower in patients with ocular rosacea (31.0+/-18.4 microg/ml, p=0.0099) and, more specifically, in patients who had dry eye (25.8+/-15.1 microg/ml, p=0.0034), compared to that in normal controls. There was no correlation between the GIIAPLA (2) content of tears and the conjunctival cells collected by the brush cytology. The tears of patients with dry eye symptoms due to ocular rosacea have decreased GIIAPLA (2) content. The pathogenic importance of this finding is discussed.

  11. Rosaceae Fruit Development, Ripening and Post-harvest: An Epigenetic Perspective

    Science.gov (United States)

    Farinati, Silvia; Rasori, Angela; Varotto, Serena; Bonghi, Claudio

    2017-01-01

    Rosaceae is a family with an extraordinary spectrum of fruit types, including fleshy peach, apple, and strawberry that provide unique contributions to a healthy diet for consumers, and represent an excellent model for studying fruit patterning and development. In recent years, many efforts have been made to unravel regulatory mechanism underlying the hormonal, transcriptomic, proteomic and metabolomic changes occurring during Rosaceae fruit development. More recently, several studies on fleshy (tomato) and dry (Arabidopsis) fruit model have contributed to a better understanding of epigenetic mechanisms underlying important heritable crop traits, such as ripening and stress response. In this context and summing up the results obtained so far, this review aims to collect the available information on epigenetic mechanisms that may provide an additional level in gene transcription regulation, thus influencing and driving the entire Rosaceae fruit developmental process. The whole body of information suggests that Rosaceae fruit could become also a model for studying the epigenetic basis of economically important phenotypes, allowing for their more efficient exploitation in plant breeding. PMID:28769956

  12. Viability of Blackbrush seed (Coleogyne ramosissima Torr. [Rosaceae]) following long-term storage

    Science.gov (United States)

    Rosemary Pendleton; Burton K. Pendleton; Susan E. Meyer; Stephanie Carlson; Elizabeth Morrison

    2012-01-01

    Blackbrush (Coleogyne ramosissima Torr. [Rosaceae]) is a landscape- dominant shrub that occurs in an ecotonal band between warm and cold deserts of the western US. This vegetation type is at considerable risk from stand-replacing wildfires due to the introduction of exotic annual grasses. Because blackbrush does not form a persistent seedbank, restoration following...

  13. Ultrastructure of pollen grain sculpturing in several species of the Rosaceae family

    Directory of Open Access Journals (Sweden)

    Józef Kocoń

    2014-01-01

    Full Text Available The sculpturing patterns of pollen grains in some species of the Rosaceae family were analyzed by SEM. Three patterns are described, typical for Prunus spinosa, Pyrus elengrifolia and Crataegus sp. The role of SEM analysis of sculpturing patterns in taxonomy can be compared to the "finger print" method in chemical plant taxonomy.

  14. Niacinamide-containing facial moisturizer improves skin barrier and benefits subjects with rosacea.

    Science.gov (United States)

    Draelos, Zoe Diana; Ertel, Keith; Berge, Cindy

    2005-08-01

    A growing body of literature suggests that some moisturizers can improve stratum corneum barrier function, as well as ameliorate dry skin. The clinical signs and symptoms of rosacea, which include increased facial skin dryness and sensitivity, suggest a possible role for such moisturizers as an adjuvant in the management of this condition. This randomized, investigator-blind, controlled observational study (N = 50) was designed to assess whether a niacinamide-containing facial moisturizer would improve the stratum corneum barrier and thus provide a clinical benefit to subjects with rosacea. Subjects with rosacea applied the test moisturizer to their face and to one forearm twice daily for 4 weeks. The other forearm remained untreated as a control. Barrier function on the forearms was assessed instrumentally and using a dimethyl sulfoxide (DMSO) chemical probe. Stratum corneum hydration also was measured instrumentally. The dermatologist investigator evaluated each subject's rosacea condition over the course of the study, and subjects self-assessed their facial skin condition at study end. Instruments provided objective measures of stratum corneum barrier function and hydration on the face.

  15. Characterization of the MLO gene family in Rosaceae and gene expression analysis in Malus domestica

    NARCIS (Netherlands)

    Pessina, S.; Pavan, S.N.C.; Catalano, D.; Gallotta, A.; Visser, R.G.F.; Bai, Y.; Malnoy, M.; Schouten, H.J.

    2014-01-01

    Background Powdery mildew (PM) is a major fungal disease of thousands of plant species, including many cultivated Rosaceae. PM pathogenesis is associated with up-regulation of MLO genes during early stages of infection, causing down-regulation of plant defense pathways. Specific members of the MLO

  16. Dual anti-inflammatory and anti-parasitic action of topical ivermectin 1% in papulopustular rosacea.

    Science.gov (United States)

    Schaller, M; Gonser, L; Belge, K; Braunsdorf, C; Nordin, R; Scheu, A; Borelli, C

    2017-11-01

    Recently, therapy of rosacea with inflammatory lesions (papulopustular) has improved substantially with the approval of topical ivermectin 1% cream. It is assumed to have a dual mode of action with anti-inflammatory capacities and anti-parasitic effects against Demodex, which however has not yet been demonstrated in vivo. To find scientific rationale for the dual anti-inflammatory and anti-parasitic mode of action of topical ivermectin 1% cream in patients with rosacea. A monocentric pilot study was performed including 20 caucasion patients with moderate to severe rosacea, as assessed by investigator global assessment (IGA score ≥3) and a Demodex density ≥15/cm2 . Patients were treated with topical ivermectin 1% cream once daily (Soolantra® ) for ≥12 weeks. The density of Demodex mites was assessed with skin surface biopsies. Expression of inflammatory and immune markers was evaluated with RT-PCR and by immunofluorescence staining. The mean density of mites was significantly decreased at week 6 and week 12 (P rosacea by killing Demodex spp. in vivo, in addition to significantly improving clinical signs and symptoms in the skin. © 2017 European Academy of Dermatology and Venereology.

  17. Etiopathogenesis of rosacea: a prospective study with a three-year follow-up.

    Science.gov (United States)

    Agnoletti, Arianna F; DE Col, Elena; Parodi, Aurora; Schiavetti, Irene; Savarino, Vincenzo; Rebora, Alfredo; Paolino, Stefania; Cozzani, Emanuele; Drago, Francesco

    2017-10-01

    The aim of this study was to investigate the role of Demodex folliculorum (DF), Helicobacter pylori (HP), and small intestine bacterial overgrowth (SIBO) in the development of rosacea. A case-control study including 60 patients with rosacea and 40 healthy controls was performed. All the patients underwent standardized skin surface biopsy to investigate DF, urea breath test for HP and lactulose breath test and glucose breath test for SIBO. Etiological therapy was started in the following order: acaricidal treatment, antibiotics for SIBO and HP. These exams were repeated after 3 years. Statistical analysis was performed. As regards the 88 patients who completed the entire follow-up, DF positivity was found in 47.7% of the patients, SIBO in 25.0%, and HP in 21.6%. SIBO significantly prevailed in papulopustular rosacea, while HP in erythrosis. At the 6-month follow up, the 61% of patients were in remission. After 3 years, 18% of patients dropped out, while the remaining patients repeated all the investigations. The majority of patients were still in remission and negative for HP while only 5 were positive for DF and 4 for SIBO. SIBO was the most relevant factor in papulopustular rosacea. Its treatment was crucial in improvement and in maintaining the clinical remission.

  18. The role of altered cutaneous immune responses in the induction and persistence of rosacea.

    Science.gov (United States)

    Margalit, Anatte; Kowalczyk, Michał J; Żaba, Ryszard; Kavanagh, Kevin

    2016-04-01

    Rosacea is a chronic inflammatory skin condition that predominantly affects the skin of the face and the eyes. Several factors are associated with the onset and persistence of the condition, including an altered immune response in the skin and elevated levels of Demodex mites. Alterations in the immune response include elevated levels of LL-37 in rosacea skin, increased expression of TLR-2 and increased amounts of vitamin D3 in epidermal tissue. The combined effect of these changes may make the skin more sensitive to external and internal stimuli. External stimuli that may trigger or sustain rosacea inflammation include exposure to ultraviolet light, while internal factors may include the presence of elevated numbers of Demodex mites. These mites may directly stimulate an immune response or release bacteria within the pilosebaceous unit that act as a trigger for inflammation. This review will highlight the changes that occur in the immune response of the skin and describe how Demodex mites and associated bacteria may activate this response and lead to the characteristics of rosacea. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  19. The pathogenesis of Demodex folliculorum (hair follicular mites) in females with and without rosacea.

    Science.gov (United States)

    el-Shazly, A M; Ghaneum, B M; Morsy, T A; Aaty, H E

    2001-12-01

    In rosacea patients (ages 11-50 years old) 44% were infested with D. folliculorum as compared to normal controls (23.0%). The difference was significant. The mean +/-SD of mite density ranged between 13.2+/-0.9 to 18.2+/-1.2 as compared to normal controls with mite density ranged between 1.4+/-0.25 to 2.4+/-0.3. Demodex infestation in rosacea patients was 66.1% in squamous, 66.7% in erythemato-telangiectate and 83.3% in papulo-pustular rosacea. The highly infested site was check (27.3%) with mean mite density of 25.3+/-1.3, followed by the area around the orbit (23.4%) with a density of 19.0+/-1.2, the area around the nose (19.5%) with mite density of 7.1+/-1.5, then chin (15.6%) with a density of 8.2+/-1.4 and lastly the area around the mouth (14.1%) with a mite density of 14.2+/-1.3. Undoubtedly, infestation with D. folliculorum particularly in large number causes rosacea.

  20. Ocular rosacea: an underdiagnosed cause of relapsing conjunctivitis-blepharitis in the elderly.

    Science.gov (United States)

    De Marchi, Sergio Umberto; Cecchin, Emanuela; De Marchi, Sergio

    2014-09-19

    Red eye and relapsing conjunctivitis-blepharitis are among the most common ocular disease in elderly patients. In these cases the search for causes is difficult and frustrating. We report the case of a 79-year-old woman with a long history of red eye and relapsing conjunctivitis-blepharitis caused by ocular rosacea. In this patient the proper diagnosis was performed after 10 years of ocular disease, and repeated evaluations by general practitioners and clinical specialists, only after the appearance of facial signs of erythematotelangiectatic rosacea. Adequate therapy with oral doxycycline led to the improvement of the clinical picture that previously had shown a poor response to several topical treatments. The possibility of ocular rosacea should be considered in evaluating an elderly patient with persistent red eye and relapsing conjunctivitis-blepharitis. Making the proper diagnosis is crucial because ocular rosacea does not respond as expected to topical therapy and may lead to severe corneal involvement. 2014 BMJ Publishing Group Ltd.

  1. Rosacea flaccida n. sp., a new species of siphonophore (Calycophorae Prayinae) from the North Atlantic Ocean

    NARCIS (Netherlands)

    Biggs, D.C.; Pugh, P.R.; Carré, C.

    1978-01-01

    Rosacea flaccida, a new prayine siphonophore, is described from specimens collected by SCUBA divers in the upper 30m of the subtropical and temperate North Atlantic Ocean. The new species has stoutly cylindrical, flaccid nectophores and delicate flattened bracts. The nectophores are morphologically

  2. A systematic review and meta-analysis on Staphylococcus aureus carriage in psoriasis, acne and rosacea

    NARCIS (Netherlands)

    J. Totté (Joan); W.T. van der Feltz; L.G.M. Bode (Lonneke); A.F. van Belkum (Alex); E.J. Van Zuuren; S.G.M.A. Pasmans (Suzanne)

    2016-01-01

    textabstractStaphylococcus aureus might amplify symptoms in chronic inflammatory skin diseases. This study evaluates skin and mucosal colonization with S. aureus in patients with psoriasis, acne and rosacea. A systematic literature search was conducted. Both odds ratios (OR) for colonization in

  3. New developments in the treatment of rosacea – role of once-daily ivermectin cream

    Directory of Open Access Journals (Sweden)

    Cardwell LA

    2016-03-01

    Full Text Available Leah A Cardwell,1 Hossein Alinia,1 Sara Moradi Tuchayi,1 Steven R Feldman,1–31Department of Dermatology, Center for Dermatology Research, 2Department of Pathology, 3Department of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA Abstract: Rosacea is a chronic dermatological disorder with a variety of clinical manifestations localized largely to the central face. The unclear etiology of rosacea fosters therapeutic difficulty; however, subtle clinical improvement with pharmacologic treatments of various drug categories suggests a multifactorial etiology of the disease. Factors that may contribute to disease pathogenesis include immune abnormality, vascular abnormality, neurogenic dysregulation, presence of cutaneous microorganisms, UV damage, and skin barrier dysfunction. The role of ivermectin in the treatment of rosacea may be as an anti-inflammatory and anti-parasitic agent targeting Demodex mites. In comparing topical ivermectin and metronidazole, ivermectin was more effective; this treatment modality boasted more improved quality of life, reduced lesion counts, and more favorable participant and physician assessment of disease severity. Patients who received ivermectin 1% cream had an acceptable safety profile. Ivermectin is efficacious in decreasing inflammatory lesion counts and erythema. Keywords: papulopustular rosacea, topical ivermectin, metronidazole, azelaic acid, topical

  4. Randomised controlled trial of topical kanuka honey for the treatment of rosacea

    NARCIS (Netherlands)

    Braithwaite, Irene; Hunt, Anna; Riley, Judith; Fingleton, James; Kocks, Janwillem; Corin, Andrew; Helm, Colin; Sheahan, Davitt; Tofield, Christopher; Montgomery, Barney; Holliday, Mark; Weatherall, Mark; Beasley, Richard

    2015-01-01

    OBJECTIVE: To investigate the efficacy of topical 90% medical-grade kanuka honey and 10% glycerine (Honevo) as a treatment for rosacea. DESIGN: Randomised controlled trial with blinded assessment of primary outcome variable. SETTING: Outpatient primary healthcare population from 5 New Zealand sites.

  5. A farmer's occupational airborne contact dermatitis masqueraded by coexisting rosacea: delayed diagnosis and legal acknowledgement.

    NARCIS (Netherlands)

    Spiewak, R.W.; Dutkiewicz, J

    2004-01-01

    A rare case of coexistence of occupational airborne dermatitis with rosacea is presented in a 41-year-old female farmer. Her first dermatitis symptoms appeared at the age of 10 when she started helping her parents on the farm. Uncovered skin areas of the face, neck, decollete, forearms and the hands

  6. Rosaceae Fruit Development, Ripening and Post-harvest: An Epigenetic Perspective.

    Science.gov (United States)

    Farinati, Silvia; Rasori, Angela; Varotto, Serena; Bonghi, Claudio

    2017-01-01

    Rosaceae is a family with an extraordinary spectrum of fruit types, including fleshy peach, apple, and strawberry that provide unique contributions to a healthy diet for consumers, and represent an excellent model for studying fruit patterning and development. In recent years, many efforts have been made to unravel regulatory mechanism underlying the hormonal, transcriptomic, proteomic and metabolomic changes occurring during Rosaceae fruit development. More recently, several studies on fleshy (tomato) and dry (Arabidopsis) fruit model have contributed to a better understanding of epigenetic mechanisms underlying important heritable crop traits, such as ripening and stress response. In this context and summing up the results obtained so far, this review aims to collect the available information on epigenetic mechanisms that may provide an additional level in gene transcription regulation, thus influencing and driving the entire Rosaceae fruit developmental process. The whole body of information suggests that Rosaceae fruit could become also a model for studying the epigenetic basis of economically important phenotypes, allowing for their more efficient exploitation in plant breeding.

  7. Rosaceae Fruit Development, Ripening and Post-harvest: An Epigenetic Perspective

    Directory of Open Access Journals (Sweden)

    Silvia Farinati

    2017-07-01

    Full Text Available Rosaceae is a family with an extraordinary spectrum of fruit types, including fleshy peach, apple, and strawberry that provide unique contributions to a healthy diet for consumers, and represent an excellent model for studying fruit patterning and development. In recent years, many efforts have been made to unravel regulatory mechanism underlying the hormonal, transcriptomic, proteomic and metabolomic changes occurring during Rosaceae fruit development. More recently, several studies on fleshy (tomato and dry (Arabidopsis fruit model have contributed to a better understanding of epigenetic mechanisms underlying important heritable crop traits, such as ripening and stress response. In this context and summing up the results obtained so far, this review aims to collect the available information on epigenetic mechanisms that may provide an additional level in gene transcription regulation, thus influencing and driving the entire Rosaceae fruit developmental process. The whole body of information suggests that Rosaceae fruit could become also a model for studying the epigenetic basis of economically important phenotypes, allowing for their more efficient exploitation in plant breeding.

  8. Rosacea is associated with chronic systemic diseases in a skin severity-dependent manner: results of a case-control study.

    Science.gov (United States)

    Rainer, Barbara M; Fischer, Alexander H; Luz Felipe da Silva, Dimitre; Kang, Sewon; Chien, Anna L

    2015-10-01

    Rosacea is a common chronic inflammatory dermatosis of unclear origin. It has been associated with systemic comorbidities, but methodical studies addressing this association are lacking. We evaluated: (1) the association between rosacea and systemic comorbidities; and (2) if the severity of rosacea is impacted by comorbidities. This was a case-control study: patients with rosacea were matched (1:1) to rosacea-free control subjects by age, sex, and race. Relative risk estimates were calculated using logistic regression as odds ratios with 95% confidence intervals. Among 130 participants (65 patients/65 control subjects), we observed a significant association between rosacea and allergies (airborne, food), respiratory diseases, gastroesophageal reflux disease, other gastrointestinal diseases, hypertension, metabolic and urogenital diseases, and female hormone imbalance. Compared with mild rosacea, moderate to severe rosacea was significantly associated with hyperlipidemia, hypertension, metabolic diseases, cardiovascular diseases, and gastroesophageal reflux disease. This was a case-control study with moderate sample size. Associated medical conditions were self-reported and could not always be confirmed by medication use and medical records. Rosacea is associated with numerous systemic comorbid diseases in a skin severity-dependent manner. Physicians should be aware of these associations to provide comprehensive care to patients with rosacea, especially to those with more severe disease. Copyright © 2015 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  9. Non-obligatory role of prostaglandin D2 receptor subtype 1 in rosacea: laropiprant in comparison to a placebo did not alleviate the symptoms of erythematoelangiectaic rosacea.

    Science.gov (United States)

    Krishna, Rajesh; Guo, Ying; Schulz, Valerie; Cord-Cruz, Evyan; Smith, Shanna; Hair, Suzanne; Nahm, Walter K; Draelos, Zoe D

    2015-02-01

    Erythematotelangiectatic rosacea shares facial flushing features with those seen after niacin. This study was performed to test the hypothesis whether prostaglandin D2 (PGD2) receptor subtype 1 antagonist (laropiprant) will improve the symptoms of rosacea. The purpose of this study was to evaluate the effect of laropiprant 100 mg administered once daily for 4 weeks on the signs and symptoms of erythematotelangiectatic rosacea. Subjects received laropiprant 100 mg once-daily (n = 30) or placebo (n = 30) for 4 weeks. The primary pharmacodynamics endpoint was change in Clinician's Erythema Assessment (CEA) score from baseline to week 4. The patient self-assessment (PSA) was a secondary endpoint. Laropiprant was generally well tolerated in this study for the primary endpoint of change in CEA score from Baseline to Week 4, the least-squares mean of change from baseline to visit 4/week 4 was -3.7 and -3.4 for placebo and laropiprant (100 mg), respectively. The least-squares mean difference (placebo minus laropiprant) with 90% confidence interval of change in CEA score from baseline to visit 4/week 4 was estimated as -0.3 (-1.6, 1.0). For the secondary endpoint, the least-squares mean difference (placebo minus laropiprant) with 90% confidence interval of change from baseline to visit 4/week 4 was estimated as -0.7 (-7.7, 6.4) for PSA total score, -4.5 (-14.2, 5.3) for PSA emotion score, -1.3 (-7.8, 5.3) for PSA symptoms score, and 3.6 (-4.3, 11.4) for PSA functioning score. Laropiprant administered once daily for 4 weeks was generally well tolerated in this population of subjects with rosacea. However, there were no clinically meaningful changes in the primary endpoint of CEA given that the response to laropiprant could not be differentiated from that to placebo. There was also no clinically meaningful change in the secondary endpoint, PSA. A DP1 antagonist is not likely to be effective in rosacea. © 2014, The American College of Clinical Pharmacology.

  10. In vivo confocal microscopy evaluation of ocular and cutaneous alterations in patients with rosacea.

    Science.gov (United States)

    Liang, Hong; Randon, Matthieu; Michee, Sylvain; Tahiri, Rachid; Labbe, Antoine; Baudouin, Christophe

    2017-03-01

    The physiopathology of rosacea and the correlation between ocular and cutaneous rosacea remains unclear. This study analysed ocular and cutaneous rosacea with in vivo confocal microscopy (IVCM). Thirty-four eyes of 34 patients with confirmed rosacea-associated meibomian gland dysfunction-related evaporative dry eye were enrolled in the study. The ophthalmological investigations included dry eye ocular surface disease index (OSDI), the Schirmer test, tear osmolarity, tear break up time, the Oxford score, infrared meibography for meibomian gland (MG) analysis and IVCM investigation for cornea, MG and skin analysis (cheek, hand). Presences of Demodex in the MG and in the cheek were also investigated. We established scores for quantifying the MG alterations in the MG (IVCM-MG) and cheek (IVCM-Cheek), and scores for Demodex quantification in the MG and cheek (IVCM-MG-Dex and IVCM-Cheek-Dex). IVCM was relevant for analysing the cornea and MG structures and was also suitable for cutaneous analysis. Exposed skin explorations presented the epidermal and dermal layers clearly. In patients with rosacea, the IVCM-MG alteration scores were correlated with IVCM-Cheek (R 2 =0.27 and p=0.0006) and IVCM-MG-Dex was correlated with IVCM-Cheek-Dex (R 2 =0.70 and prosacea combined with quantification of Demodex infections. As a valuable tool for investigating the pathophysiology of the disease, it could be used to assess the effectiveness of therapy. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  11. The role of vascular disorders in the genesis and maintenance of infammation in the pathogenesis of rosacea

    Directory of Open Access Journals (Sweden)

    Slesarenko N.S.

    2012-06-01

    Full Text Available

    Aims. The study was aimed to identify relationships of immune disorders and angiogenesis in patients at different stages of rosacea. Materials and methods. We examined 110 patients with rosacea. The diagnosis was based on diagnostic criteria. We summarized the role of predictors in the development of rosacea. We investigated pro- and anti-infammatory cytokines, vascular endothelial growth actor (VEGF, fbroblast growth factor (FGF for the detection of immune disorders and angiogenesis. Results. The immune response in patients with rosacea was of mixed Th-1 and Th-2 type which can be markers of chronic autoimmune infammation. Simultaneously with the change in cytokine profle we revealed activation of angiogenesis (high levels of VEGF, FGF.

  12. Increased expression of cathelicidin by direct activation of protease-activated receptor 2: possible implications on the pathogenesis of rosacea.

    Science.gov (United States)

    Kim, Ji Young; Kim, Yoon Jee; Lim, Beom Jin; Sohn, Hyo Jung; Shin, Dongyun; Oh, Sang Ho

    2014-11-01

    Recent findings of increased cathelicidin protein and its proteolytic fragments in rosacea suggest a pathogenic role for cathelicidin in this disease. The relationship between cathelicidin and protease-activated receptor 2 (PAR-2) is therefore of interest, as PAR-2, expressed principally in keratinocytes, regulates pro-inflammatory cytokine expression in the skin. The purpose of this study was to determine the relationship between expression of PAR-2 and cathelicidin in rosacea and to test the effect of direct PAR-2 activation on cathelicidin expression in keratinocytes. Samples from 40 patients with clinicopathologic diagnosis of rosacea and facial skin tissue samples from 20 patients with no specific findings or milium without inflammation were retrieved. Intensities of immunohistochemical staining for PAR-2 and cathelicidin were compared between normal and rosacea-affected skin tissues. Additionally, correlations between PAR-2 and cathelicidin staining intensities within rosacea patients were analyzed. In cultured keratinocytes, changes in PAR-2, cathelicidin, and vascular endothelial growth factor (VEGF) mRNA and protein were analyzed after treatment with PAR-2 activating peptide (AP). Cathelicidin expression was significantly higher in rosacea skin tissues than in normal tissues (prosacea tissues than in normal skin tissues. A positive correlation between PAR-2 and cathelicidin within rosacea samples was observed (R=0.330, p=0.037). After treatment of PAR-2 AP, both mRNA and protein levels for PAR-2, cathelicidin, and VEGF significantly increased in cultured keratinocytes, compared with PAR-2 control peptide treatment. PAR-2 may participate in the pathogenesis of rosacea through activation of cathelicidin LL-37, a mediator of innate immune responses in the skin.

  13. Efficacy and safety of permethrin 5% topical gel vs. placebo for rosacea: a double-blind randomized controlled clinical trial.

    Science.gov (United States)

    Raoufinejad, K; Mansouri, P; Rajabi, M; Naraghi, Z; Jebraeili, R

    2016-12-01

    Rosacea is a chronic, multifactorial, dermatological condition. Increased density of Demodex folliculorum mites in the skin of rosacea patients suggests a possible role for these mites in the pathophysiology of rosacea. To evaluate the effects of permethrin 5% topical gel vs. placebo on Demodex density (Dd) and clinical presentations of rosacea patients, and also to further refine the quantitative assessment of Dd in the non-invasive standard skin surface biopsy (SSSB). Twenty patients with bilateral papulopustular rosacea and ≥5 mites/cm2 were enrolled in the study. Participants and physicians were blinded to the group assignments. Each patient applied permethrin on one side and placebo on the other side of the face twice daily for 12 weeks. SSSB and photography and Rosacea Clinical Scorecard of the National Rosacea Society were used to assess the patients at the baseline, 2nd, 5th, 8th, and 12th weeks for both sides of the face. Causality and severity of adverse drug reactions (ADRs) were assessed by WHO Scale and Hartwig Scale, respectively. Dd was not significantly different between the two groups at the baseline. In both groups, Dd significantly decreased after 12 weeks compared to the baseline. At the end of the 12th week, the Dd in the permethrin group was significantly lower than the placebo group. Severity of the clinical presentations decreased in both groups at the end of week 12 in comparison to the baseline, particularly in the permethrin group. ADRs were all mild and in most cases unlikely related to permethrin. Permethrin 5% gel can significantly reduce the Dd and severity of presentations in rosacea patients and can be a safe and effective option in the management of this chronic disorder. This new SSSB technique offers an easy, quick, inexpensive, and non-invasive sampling method proper for quantitative assessment of Dd. © 2016 European Academy of Dermatology and Venereology.

  14. [A histological and immunohistological study of vascular and inflammatory changes in rosacea].

    Science.gov (United States)

    Perrigouard, C; Peltre, B; Cribier, B

    2013-01-01

    Rosacea has a number of pathophysiological components, chief of which are vascular abnormalities and inflammation. The morphology of the dilated vessels in rosacea may indicate an increase in the number and size of lymphatic vessels. We carried out a histological and an immunohistological study to quantify these abnormalities in rosacea and compared them with those seen in lupus erythematosus. We reviewed all cases of rosacea analysed over a 4-year period. Ultimately, we only included 86 cases in which the diagnosis could be confirmed by a dermatologist based upon histopathological correlation and follow-up. All biopsies were reviewed for histopathological features, and 25 of these were compared with 25 facial biopsies in documented cases of lupus erythematosus, using standard staining followed by immunohistochemical analysis with anti-CD3, CD4, CD8 and CD20 (lymphocytic) antibodies, anti-CD68 (histiocytic) antibodies, anti-CD31 (endothelial cell) antibodies and anti-D2-40 (podoplanin, a marker for lymphatic endothelial cells) antibodies. In 88% of cases of rosacea, large superficial dermal vessels of geometrical or bizarre configuration were noted, and turgescent cells and dermal edema were frequently seen. Over 75% of cases involved Demodex, including erythemato-telangiectatic subtypes. The rosacea included a mean 15 vessels/mm(2), eight of which expressed D2-40; six were greater than 30μm in diameter (mean: 103μm; maximum: 400μm), with only two of these being D2-40+. The lupus erythematosus biopsies exhibited a mean 15 vessels/mm(2), nine of which expressed D2-40; four measured over 30μm in diameter (mean: 59μm; maximum: 100μm), of which two were D2-40+. The vessels measuring over 100μm were only seen in rosacea, and notable actinic elastosis was associated in 80% of these cases. No Demodex was seen in the lupus cases. The lymphocytic infiltration consisted mainly of CD4+ T cells in both groups, but was chiefly sub-epidermal in lupus, occasionally masking

  15. Reflectance confocal microscopy for monitoring the density of Demodex mites in patients with rosacea before and after treatment.

    Science.gov (United States)

    Sattler, E C; Hoffmann, V S; Ruzicka, T; Braunmühl, T V; Berking, C

    2015-07-01

    Demodex mites seem to serve as a pathogenic trigger in many Demodex-associated diseases such as rosacea. In facial skin of patients with rosacea significantly higher numbers of Demodex mites have been shown compared with healthy controls. Reflectance confocal microscopy (RCM) allows the detection and quantification of Demodex mites in vivo noninvasively. It is hypothesized that a reduction of Demodex mites under rosacea therapy can be monitored by RCM. To use RCM to monitor the density of Demodex mites in patients with rosacea before and after treatment. In 25 patients with facial rosacea RCM was performed before and after therapy. Mosaics of 5 × 5 mm(2) and 8 × 8 mm(2) were scanned, and the total numbers of mites per follicle and per area were counted, along with the number of follicles per area. In all patients Demodex folliculorum could be detected and quantified using RCM. RCM showed significant differences pre- and post-treatment (P = 0.0053 for 5 × 5 mm(2) and P rosacea under therapy, correlating to clinical improvement, can be quantified and monitored noninvasively. Possible reasons for this therapeutic effect are discussed. © 2015 British Association of Dermatologists.

  16. Cathelicidin, kallikrein 5, and serine protease activity is inhibited during treatment of rosacea with azelaic acid 15% gel

    Science.gov (United States)

    Coda, Alvin B.; Hata, Tissa; Miller, Jeremiah; Audish, David; Kotol, Paul; Two, Aimee; Shafiq, Faiza; Yamasaki, Kenshi; Harper, Julie C.; Del Rosso, James Q.; Gallo, Richard L.

    2014-01-01

    Background Excess cathelicidin and kallikrein 5 (KLK5) have been hypothesized to play a role in the pathophysiology of rosacea. Objective We sought to evaluate the effects of azelaic acid (AzA) on these elements of the innate immune system. Methods Gene expression and protease activity were measured in laboratory models and patients with rosacea during a 16-week multicenter, prospective, open-label study of 15% AzA gel. Results AzA directly inhibited KLK5 in cultured keratinocytes and gene expression of KLK5, Toll-like receptor-2, and cathelicidin in mouse skin. Patients with rosacea showed reduction in cathelicidin and KLK5 messenger RNA after treatment with AzA gel. Subjects without rosacea had lower serine protease activity (SPA) than patients with rosacea. Distinct subsets of patients with rosacea who had high and low baseline SPA were identified, and patients with high baseline exhibited a statistically significant reduction of SPA with 15% AzA gel treatment. Limitations Study size was insufficient to predict clinical efficacy based on the innate immune response to AzA. Conclusions These results show that cathelicidin and KLK5 decrease in association with AZA exposure. Our observations suggest a new mechanism of action for AzA and that SPA may be a useful biomarker for disease activity. PMID:23871720

  17. Comparative analysis of rosacea and cutaneous lupus erythematosus: histopathologic features, T-cell subsets, and plasmacytoid dendritic cells.

    Science.gov (United States)

    Brown, Theodore T; Choi, Eun-Young K; Thomas, Dafydd G; Hristov, Alexandra C; Chan, May P

    2014-07-01

    Distinction of rosacea and cutaneous lupus erythematosus (LE) can be challenging because of significant clinical and histologic overlap. A controlled study comparing these conditions is lacking. We compared the histologic features, T-cell subsets, and plasmacytoid dendritic cells in rosacea and LE. Biopsy specimens of rosacea (n = 27) and facial LE (n = 30) were retrospectively reviewed and reacted with Alcian blue and periodic acid-Schiff stains, and CD4, CD8, CD25, and CD123 immunostains. LE demonstrates a lower CD4:CD8 ratio (1.74 vs 2.80, P = .0064), fewer CD4(+)CD25(+) regulatory T cells (13% vs 31%, P rosacea. The plasmacytoid dendritic cells in LE are more likely to form clusters (P = .0137) and comprise at least 20% of the infiltrate (P = .0340). Also associated with LE are follicular plugging (P = .0039), perineural lymphocytic infiltrate (P = .0211), abundant mucin deposition (P = .0031), and conspicuous basement membrane thickening (P = .0073), whereas Demodex infestation (P = .0064) and sebaceous hyperplasia (P = .0029) are significantly associated with rosacea. Although statistically significant, the immunophenotypic differences are rather small and limited for routine use. The infiltrates in rosacea and LE differ immunophenotypically, and may aid in their distinction in addition to conventional histologic examination. Copyright © 2014 American Academy of Dermatology, Inc. Published by Mosby, Inc. All rights reserved.

  18. Ocular rosacea: a review Rosácea ocular: revisão

    Directory of Open Access Journals (Sweden)

    Ana Carolina Cabreira Vieira

    2012-10-01

    Full Text Available Rosacea is a prevalent chronic cutaneous disorder with variable presentation and severity. Although considered a skin disease, rosacea may evolve the eyes in 58-72% of the patients, causing eyelid and ocular surface inflammation. About one third of the patients develop potentially sight-threatening corneal involvement. Untreated rosacea may cause varying degrees of ocular morbidity. The importance of early diagnosis and adequate treatment cannot be overemphasized. There is not yet a diagnostic test for rosacea. The diagnosis of ocular rosacea relies on observation of clinical features, which can be challenging in up to 90% of patients in whom accompanying roseatic skin changes may be subtle or inexistent. In this review, we describe the pathophysiologic mechanisms proposed in the literature, clinical features, diagnosis and management of ocular rosacea, as well as discuss the need for a diagnostic test for the disease.A rosácea é uma condição cutânea crônica, que possui apresentações clínicas variáveis. Apesar de considerada uma doença dermatológica, os olhos podem ser acometidos em 58-72% dos casos, causando inflamação palpebral e da superfície ocular. Aproximadamente um terço dos pacientes desenvolve acometimento corneano, podendo causar baixa visual significativa. Diagnóstico precoce e tratamento adequado são de extrema importância, devido à significativa morbidade ocular que a doença pode causar. Não há, até o momento, um teste diagnóstico para rosácea. O diagnóstico da rosácea ocular depende da observação das manifestações clínicas, o que pode ser bastante desafiador em até 90% dos pacientes, em que os achados cutâneos são discretos ou inexistentes. Nesta revisão, descrevemos os mecanismos fisiopatológicos propostos na literatura, manifestações clínicas, diagnóstico e tratamento da rosácea ocular, assim como abordamos a necessidade de um teste diagnóstico.

  19. Evaluation of Demodex folliculorum as a Risk Factor for the Diagnosis of Rosacea In Skin Biopsies. Mexico's General Hospital (1975-2010).

    Science.gov (United States)

    Ríos-Yuil, Jose M; Mercadillo-Perez, Patricia

    2013-03-01

    Rosacea significantly affects the quality of life and its pathophysiology is not well understood. It has been suggested that the presence of Demodex folliculorum in the affected skin could be related to the development of rosacea. To study the risk for association between the presence of D. folliculorum in skin biopsies and the diagnosis of rosacea. Analytical, observational, retrospective, case-control study. Skin biopsies of patients diagnosed clinically as rosacea and the same number of controls were studied. The controls were selected among the facial skin biopsies that were not diagnosed as rosacea. All the slides were analyzed for the presence of D. folliculorum and the density of the infestation was assessed. Absolute/relative frequencies, mean, standard deviation, odds ratio (OR), Chi square and Independent Student t-test with Epi Info v. 3.4.3(®). D. folliculorum was present in 80% of the skin biopsies of rosacea patients and in 30% of the controls. The risk of suffering rosacea was increased among persons infested with the mite (OR = 9.33 [95% confidence interval: 2.85-30.60]; P = 0.0001). The mean infestation density among the cases was 1.908 for every 10 high-power fields while it was 0.718 among the controls (P rosacea. The infestation density was increased among the patients with rosacea.

  20. Rosacea or photodamaged skin? Use of brimonidine gel in differentiating erythema in the two conditions.

    Science.gov (United States)

    Oon, Hazel H; Lim, Ziying Vanessa

    2017-02-01

    In this case report, we detail the response of a 37-year-old Caucasian man with an overlap of erythematotelangiectatic rosacea and telangiectatic photoaging to brimonidine tartrate gel. With the application of brimonidine only on half of his face, skin analysis images, clinician's and patient's assessment showed that there was significant improvement in the erythema. This case has lent insight into how brimonidine can be used to assess the extent of photoaging by eliminating the erythema of rosacea to some degree. We propose that it can be used as a non-invasive test to differentiate between the two conditions, sparing patients from skin biopsies and molecular analysis. © 2016 The Australasian College of Dermatologists.

  1. Rosacea assessment by erythema index and principal component analysis segmentation maps

    Science.gov (United States)

    Kuzmina, Ilona; Rubins, Uldis; Saknite, Inga; Spigulis, Janis

    2017-12-01

    RGB images of rosacea were analyzed using segmentation maps of principal component analysis (PCA) and erythema index (EI). Areas of segmented clusters were compared to Clinician's Erythema Assessment (CEA) values given by two dermatologists. The results show that visible blood vessels are segmented more precisely on maps of the erythema index and the third principal component (PC3). In many cases, a distribution of clusters on EI and PC3 maps are very similar. Mean values of clusters' areas on these maps show a decrease of the area of blood vessels and erythema and an increase of lighter skin area after the therapy for the patients with diagnosis CEA = 2 on the first visit and CEA=1 on the second visit. This study shows that EI and PC3 maps are more useful than the maps of the first (PC1) and second (PC2) principal components for indicating vascular structures and erythema on the skin of rosacea patients and therapy monitoring.

  2. Musteranalysen an ausgewählten variegaten Formen der Araceae, Asteraceae, Ericaceae, Marantaceae und Rosaceae

    OpenAIRE

    Rodriguez Ibanez, David

    2001-01-01

    Der Ursprung, die Entwicklung und die Formierung von Laubblatt-Mustern konnten bei ausgewählten variegaten Formen der Araceae, Asteraceae, Ericaceae, Maranthaceae und Rosaceae erklärt werden. Die Pflanzen wurden je nach Problematik untersucht und in drei verschiedene Gruppen verteilt: In der ersten Gruppe, Blattmuster mit unregelmäßiger makulater Musterung, Monstera deliciosa, Syngonium podophyllum und die Sorten 'Pirol' und 'Luyona' von Dendranthema grandiflorum zeigen ein unregelmäßiges Lau...

  3. Prescription patterns and costs of acne/rosacea medications in Medicare patients vary by prescriber specialty.

    Science.gov (United States)

    Zhang, Myron; Silverberg, Jonathan I; Kaffenberger, Benjamin H

    2017-09-01

    Prescription patterns for acne/rosacea medications have not been described in the Medicare population, and comparisons across specialties are lacking. To describe the medications used for treating acne/rosacea in the Medicare population and evaluate differences in costs between specialties. A cross-sectional study was performed of the 2008 and 2010 Centers for Medicare and Medicaid Services Prescription Drug Profiles, which contains 100% of Medicare part D claims. Topical antibiotics accounted for 63% of all prescriptions. Patients ≥65 years utilized more oral tetracycline-class antibiotics and less topical retinoids. Specialists prescribed brand name drugs for the most common topical retinoids and most common topical antibiotics more frequently than family medicine/internal medicine (FM/IM) physicians by 6%-7%. Topical retinoids prescribed by specialists were, on average, $18-$20 more in total cost and $2-$3 more in patient cost than the same types of prescriptions from FM/IM physicians per 30-day supply. Specialists (60%) and IM physicians (56%) prescribed over twice the rate of branded doxycycline than FM doctors did (27%). The total and patient costs for tetracycline-class antibiotics were higher from specialists ($18 and $4 more, respectively) and IM physicians ($3 and $1 more, respectively) than they were from FM physicians. The data might contain rare prescriptions used for conditions other than acne/rosacea, and suppression algorithms might underestimate the number of specialist brand name prescriptions. Costs of prescriptions for acne/rosacea from specialists are higher than those from primary care physicians and could be reduced by choosing generic and less expensive options. Copyright © 2017 American Academy of Dermatology, Inc. Published by Elsevier Inc. All rights reserved.

  4. Ocular response analyser measurements and central corneal thickness in ocular rosacea patients.

    Science.gov (United States)

    Palamar, Melis; Degirmenci, Cumali; Ertam, Ilgen; Yagci, Ayse

    2017-02-01

    Rosacea is a chronic cutaneous disorder which is known to cause inflammation and increased proteolytic activity on the ocular surface that might lead to corneal biomechanical alterations. The aim of this study is to evaluate the corneal biomechanical properties of ocular rosacea patients and compare the measurements with healthy individuals as measured with Reichert ocular response analyser (ORA). Besides full eye examination [best corrected visual acuity (BCVA), intraocular pressure (IOP) measured with Goldmann applanation tonometry (IOP-G)], central corneal thickness (CCT), and ORA [corneal hysteresis (CH), corneal resistance factor (CRF), corneal compensated IOP (IOPcc), Goldmann correlated IOP (IOPg)] measurements of 30 eyes of 15 ocular rosacea patients (study group) and 30 eyes of 15 healthy individuals (control group) were performed. For comparisons paired t test was used. Mean age of study group was 45.26 ± 11.65 (range 25 and 63) and control group was 45.00 ± 8.91 (range 26 and 58) years (p = 0.865). No significant difference in BCVA, CCT, IOP-G, IOPcc was detected among groups. However, IOPg, CH, and CRF in the study group were significantly lower than in the control group (p = 0.013, p = 0.013, p = 0.009, respectively). IOPg, CH, and CRF parameters of ocular rosacea patients were significantly lower than normal individuals. These differences and their probable clinical reflections that might effect making decisions in conditions such as glaucoma should be investigated in larger number of patients.

  5. [Investigation of the prevalance of Demodex folliculorum and Demodex brevis in rosacea patients].

    Science.gov (United States)

    Yücel, Ahmet; Yilmaz, Mustafa

    2013-01-01

    Demodex spp. is an acari that resides in the hair follicles and sebaceous glands of the skin unit. It is known that Demodex spp. may play a role in the pathogenesis of rosacea and acne. Common sites of Demodex infestation are the facial skin , forehead, cheeks, chin and nasolabial fold. This study was performed between January 2010 and December 2011. It was carried out in order to investigate the frequency of Demodex folliculorum and Demodex brevis among rosacea patients who presented to the Fırat University Hospital Parasitology-Mycology Laboratory. Skin scrapings were taken from suspected lesions on anatomic regions (face, cheek and chin) in a total of 28 patients 19 (67.85%) women and 9 (32.15%) men; age range 22-58 years. They were examined under light microscopic with a dripping 15% KOH solution. The findings indicated that Demodex spp. was positive in 17 (60.7%) of 28 patients; D. folliculorm was positive in 10 (35.71%) female patients and 5 (17.85%) male patients, and also D. brevis was positive in 2 (7.14%) female patients. In our country, Demodex spp. should be regarded as a leading cause of infestation among the patients with rosacea. This study suggests that investigation of Demodex spp. in all of these tissues could be beneficial.

  6. Dapsone Gel in the Treatment of Papulopustular Rosacea: A Double-Blind Randomized Clinical Trial.

    Science.gov (United States)

    Faghihi, Gita; Khosravani, Parastoo; Nilforoushzadeh, Mohammad Ali; Hosseini, Sayyed Mohsen; Assaf, Fatemeh; Zeinali, Naser; Smiley, Abbas

    2015-06-01

    We aimed to evaluate the effects of 5% dapsone gel compared with 0.75% metronidazole gel in the treatment of papulopustular rosacea. In a double-blind randomized clinical trial, 56 adult patients with papulopustular rosacea were enrolled. The severity of disorder was determined by the patient according to visual analogue score (VAS). Investigator's global assessment (IGA) scores and number of inflammatory lesions were recorded. 5% dapsone gel was administered for group D and 0.75% metronidazole gel was administered for group M. Systemic doxycycline was administered for all patients. Follow-up assessments were done at 4, 8, and 12 weeks. Changes in VAS, IGA scores and number of lesions were evaluated. Intention to treat analysis was carried out using SPSS version 17 (Chicago, IL). There was no significant difference in sex and age distribution between the two groups. Mean (SD) IGA score before and after intervention in group D was 3.9 (0.9) and 3.3 (0.9), respectively (PDapsone gel was as effective as metronidazole gel in the treatment of papulopustular rosacea.

  7. Preliminary open-label clinical evaluation of the soothing and reepithelialization properties of a novel topical formulation for rosacea

    Directory of Open Access Journals (Sweden)

    Sparavigna A

    2014-10-01

    Full Text Available Adele Sparavigna, Beatrice Tenconi, Ileana De Ponti Derming Srl, Monza, Italy Background: Rosacea is a common, incurable skin barrier disorder characterized by relapses and remissions. Purpose: To evaluate the efficacy of Farmaka Rosacea Cream (FRC, a novel topical formulation for rosacea. Methods: This single-center, open-label pilot study comprised a single-dose substudy in 20 healthy subjects and a long-term, repeat-dose substudy in 22 subjects with rosacea. The 2-hour, controlled, single-dose substudy assessed the soothing and reepithelialization properties of FRC after stripping-induced erythema based on the erythema index, transepidermal water loss, skin hydration, and clinical assessments of erythema. In the long-term substudy, subjects applied FRC twice daily for 8 weeks. Clinical assessments included vascular and pigmentary homogeneity and erythema and hemoglobin indices. Subjects completed questionnaires to assess FRC efficacy and cosmetic acceptability. Results: Greater reductions were seen in FRC-treated areas compared with untreated areas for the erythema index (-16% versus -8%; P<0.001 and mean transepidermal water loss (-35.8% versus -10.1%; P<0.001 30 minutes after stripping. Significant improvements over untreated areas were maintained 2 hours after stripping. Skin hydration and clinical erythema assessments also indicated that FRC soothed rosacea symptoms and promoted skin reepithelialization. Erythema and hemoglobin indices were significantly reduced from baseline after 4 and 8 weeks of treatment. Clinically assessed parameters were significantly improved following FRC application. Subjects assessed FRC positively. Conclusion: Improvement of rosacea symptoms was noted with FRC application. The main film-forming ingredients of FRC (trehalose, cholesterol, ceramide, and fatty acids, combined with other soothing and calming ingredients and ultraviolet filters, could explain its efficacy. Keywords: rosacea, erythema, skin

  8. Cost-Effectiveness of Ivermectin 1% Cream in Adults with Papulopustular Rosacea in the United States.

    Science.gov (United States)

    Taieb, Alain; Stein Gold, Linda; Feldman, Steven R; Dansk, Viktor; Bertranou, Evelina

    2016-06-01

    Papulopustular rosacea is a chronic skin disease involving central facial erythema in combination with papules and pustules. Papulopustular rosacea is treated with topical, systemic, or a combination of topical and systemic therapies. Currently approved topical therapies include azelaic acid gel/cream/foam twice daily (BID) and metronidazole cream/gel/lotion BID. Ivermectin 1% cream once daily (QD) is a new topical agent for the treatment of papulopustular rosacea that has been approved for the management of inflammatory lesions of rosacea and offers an alternative to current treatments. To evaluate the cost-effectiveness of ivermectin 1% cream QD compared with current topical treatments in order to understand the cost of adding ivermectin as a treatment option that would bring additional clinical benefit for adults with papulopustular rosacea in the United States. The cost-effectiveness of ivermectin 1% cream QD was compared with metronidazole 0.75% cream BID and azelaic acid 15% gel BID for adults in the United States with moderate-to-severe papulopustular rosacea using a Markov cohort state transition structure with 2 mutually exclusive health states (rosacea and no rosacea) and 5 phases. Patients could succeed or fail to respond to treatment and experience a relapse after treatment success. The model took a health care payer perspective (direct medical costs of topical and/or systemic therapy plus health care costs for physician and specialist visits) and used a 3-year time horizon. The model was run for a cohort of 1,000 patients. Costs (2014 U.S. dollars) and benefits (disease-free days and quality-adjusted life-years [QALYs]) were discounted at a rate of 3% per annum. Cost-effectiveness was determined by the incremental cost-effectiveness ratio (ICER) and measured in terms of incremental cost per QALY gained (estimated from health state utilities for patients with and without rosacea). Univariate and probabilistic sensitivity analyses (PSA) were conducted to

  9. Inhibition of mast cell infiltration in an LL-37-induced rosacea mouse model using topical brimonidine tartrate 0.33% gel.

    Science.gov (United States)

    Kim, Miri; Kim, Jongsic; Jeong, Seo-Won; Jo, Hyunmu; Woo, Yu Ri; Park, Hyun Jeong

    2017-11-01

    Brimonidine is a highly selective α2-adrenergic receptor agonist approved by the FDA for the treatment of rosacea. Rosacea is a major clinical disease with vasodilatation and rash on the centre of the face, and that brimonidine as a vasoconstrictor can act as a remedy for rosacea. However, there is no study of how brimonidine has an effect on rosacea-related immune cells or mechanisms in the skin to improve rosacea. In this study, we observed that clinical features of rosacea induced by LL-37 in Balb/c mice were improved after the application of brimonidine gel, and we also showed a marked decrease in the number of inflammatory cells, especially mast cells (MCs) histologically. Furthermore, we confirmed that mRNA levels of MC enzymes increased by LL-37 were reduced by brimonidine gel. To our knowledge, we first found that brimonidine has a mechanism of treating rosacea by reducing the number and mRNA levels of MC-specific enzymes, an important immune cell in the pathogenesis of rosacea. © 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  10. Correlation between serum reactivity to Demodex-associated Bacillus oleronius proteins, and altered sebum levels and Demodex populations in erythematotelangiectatic rosacea patients.

    Science.gov (United States)

    Jarmuda, Stanislaw; McMahon, Fred; Zaba, Ryszard; O'Reilly, Niamh; Jakubowicz, Oliwia; Holland, Ashling; Szkaradkiewicz, Andrzej; Kavanagh, Kevin

    2014-02-01

    Rosacea is a chronic inflammatory condition that affects the skin of the face and the eyes. The aetiology of rosacea is not clearly established but increasing evidence suggests a potential role for bacteria in the induction of the condition. A role for Bacillus oleronius, originally isolated from within a Demodex folliculorum mite, in the aetiology of the condition has been suggested. The aim of the study was to determine whether a correlation existed between the level of sebum and the density of D. folliculorum in the skin of erythematotelangiectatic rosacea patients, and the reactivity of these patients' sera to proteins of B. oleronius. Serum reactivity to the 62 and 83 kDa B. oleronius proteins was found in 82.6 % (62/75) of the rosacea patients and in 26.9 % (14/52) of controls (P = 0.0016). In the group of rosacea patients whose sera reacted to B. oleronius proteins, the level of sebum was statistically lower than in controls (P = 0.01). The density of D. folliculorum on the face of Bacillus positive rosacea patients was statistically higher than controls (P = 0.0001). Rosacea patients demonstrated increased Demodex populations on their faces and reduced sebum levels. Their sera also showed reactivity to B. oleronius proteins, suggesting a potential role for this bacterium in the aetiology of rosacea.

  11. Occupational Allergy to Peach (Prunus persica) Tree Pollen and Potential Cross-Reactivity between Rosaceae Family Pollens.

    Science.gov (United States)

    Jiang, Nannan; Yin, Jia; Mak, Philip; Wen, Liping

    2015-10-01

    Orchard workers in north China are highly exposed to orchard pollens, especially peach and other Rosaceae family pollens during pollination season. The aim of this study was to investigate whether occupational allergy to peach tree pollen as a member of Rosaceae family is IgE-mediated and to evaluate the cross-reactivity among Rosaceae family pollens. Allergen skin test and conjunctival challenge test were performed; enzyme linked immune-sorbent assay (ELISA), inhibiting ELISA, western immunoblotting and inhibiting western immunoblotting were done with Rosaceae family orchard pollens, including peach, apricot, cherry, apple and pear tree pollens. Mass spectrometry was also performed to probe the main allergen component and cross-reactive protein. Sensitizations to peach pollen were found in both skin test and conjunctival challenge in the patients. Serum specific IgE to three pollens (peach, apricot and cherry) were detected through ELISA. When peach pollen used as solid phase, ELISA inhibition revealed other four kinds of pollens capable of inducing partial to strong inhibitions (45% to 87%), with the strongest inhibition belonging to apricot pollen (87%). Western blotting showed predominant IgE binding to a 20 KD protein among these pollens, which appeared to be a cross-reactive allergen component through western blotting inhibition. It was recognized as a protein homologous to glutathione s-transferase 16 from Arabidopsis thaliana. Peach and other Rosaceae family tree pollen may serve as a potential cause of IgE mediated occupational respiratory disease in orchard workers in north China.

  12. The Effect of Skin Sebum, pH, and Moisture on Demodex Infestation in Acne Vulgaris and Rosacea Patients.

    Science.gov (United States)

    Turan, Nergiz; Kapıcıoğlu, Yelda; Saraç, Gülbahar

    2017-09-01

    Acne vulgaris is an inflammatory disease involving the pilosebaceous unit. Rosacea is a chronic inflammatory skin disease that affects the face in particular. This study aimed to determine if skin sebum, pH, and moisture affect the number of Demodex spp. in acne vulgaris and rosacea patients. This study focused on 30 patients each with acne vulgaris and rosacea. As a control group, 60 healthy individuals were included. In acne vulgaris patients, when compared to those with Demodex mite more than 5 /cm2 in each area, less than 5/cm2 were found to be oily, acidic, dry or very dry. However, there was no significant difference in moisture value. In patients with rosacea, the skin was acidic and dry in patients those with more than 5/cm2 Demodex mites when compared to those with demodex mite less than 5 /cm2 in patients in each of the right cheek and nose areas. There was no difference in skin oil level. The oily, acidic, dry, and very dry skin of the acne vulgaris patients and the oily, acidic, and very dry skin of the rosacea patients are factors facilitating the development of Demodex ssp.

  13. Novel sulfated polysaccharides disrupt cathelicidins, inhibit RAGE and reduce cutaneous inflammation in a mouse model of rosacea.

    Directory of Open Access Journals (Sweden)

    Jianxing Zhang

    2011-02-01

    Full Text Available Rosacea is a common disfiguring skin disease of primarily Caucasians characterized by central erythema of the face, with telangiectatic blood vessels, papules and pustules, and can produce skin thickening, especially on the nose of men, creating rhinophyma. Rosacea can also produce dry, itchy eyes with irritation of the lids, keratitis and corneal scarring. The cause of rosacea has been proposed as over-production of the cationic cathelicidin peptide LL-37.We tested a new class of non-anticoagulant sulfated anionic polysaccharides, semi-synthetic glycosaminoglycan ethers (SAGEs on key elements of the pathogenic pathway leading to rosacea. SAGEs were anti-inflammatory at ng/ml, including inhibition of polymorphonuclear leukocyte (PMN proteases, P-selectin, and interaction of the receptor for advanced glycation end-products (RAGE with four representative ligands. SAGEs bound LL-37 and inhibited interleukin-8 production induced by LL-37 in cultured human keratinocytes. When mixed with LL-37 before injection, SAGEs prevented the erythema and PMN infiltration produced by direct intradermal injection of LL-37 into mouse skin. Topical application of a 1% (w/w SAGE emollient to overlying injected skin also reduced erythema and PMN infiltration from intradermal LL-37.Anionic polysaccharides, exemplified by SAGEs, offer potential as novel mechanism-based therapies for rosacea and by extension other LL-37-mediated and RAGE-ligand driven skin diseases.

  14. Paradoxical Erythema Reaction of Long-term Topical Brimonidine Gel for the Treatment of Facial Erythema of Rosacea.

    Science.gov (United States)

    Lowe, Erin; Lim, Scott

    2016-06-01

    In 2013 brimonidine tartrate gel 0.33% (Mirvaso Gel, Galderma Laboratories, LP, Fort Worth, TX) was approved by the US Food and Drug Administration for the treatment of facial erythema of rosacea. It is the first and only drug on the market to address the hallmark redness of this chronic, inflammatory disease. Commonly reported adverse events include erythema/flushing worse than at baseline, most often occurring with the first application. We report a unique case of facial erythema of rosacea that responded to brimonidine gel with effective blanching for two years until the patient developed a paradoxical erythema reaction. This is an adverse reaction physicians should be aware of with continued prescription of brimonidine gel for their rosacea patients. J Drugs Dermatol. 2016;15(6):763-765.

  15. The metabolism and pharmacokinetics of isotretinoin in patients with acne and rosacea are not influenced by ethanol

    DEFF Research Database (Denmark)

    Grønhøj Larsen, F; Jakobsen, P; Grønhøj Larsen, C

    2009-01-01

    BACKGROUND: Isotretinoin is effective in the treatment of severe acne and rosacea. Both parent drug and its main metabolite 4-oxo-isotretinoin are potentially teratogenic compounds and contain a carboxylic acid moiety. In the presence of ethanol, naturally occurring as well as synthetic retinoids......-RA), and other possible metabolites in the presence or absence of ethanol are converted to their corresponding ethyl derivatives in patients with severe acne or rosacea after multiple isotretinoin dosing. In addition, pharmacokinetic parameters of the parent drug and its 4-oxo metabolite were determined....... PATIENTS/METHODS: Eleven patients with severe acne or rosacea were treated with isotretinoin daily for 3 months and investigated pharmacokinetically during 24 h after 1 month of treatment and for up to 28 days after discontinuation of therapy. A possible influence of ethanol was evaluated using a simple...

  16. Recalcitrant papulopustular rosacea in an immunocompetent patient responding to combination therapy with oral ivermectin and topical permethrin.

    Science.gov (United States)

    Allen, Kattie J; Davis, Carrie L; Billings, Steven D; Mousdicas, Nico

    2007-08-01

    A 68-year-old healthy man presented with papulopustular rosacea (PPR) recalcitrant to multiple therapies, including permethrin cream 5%. Histologic examination detected the presence of chronic folliculitis and numerous Demodex organisms. A diagnosis of rosacealike demodicidosis was rendered, and the patient was treated with oral ivermectin and permethrin cream 5%, resulting in resolution of the folliculitis. Demodex infestation should be considered in any patient with rosacealike dermatitis resistant to conventional rosacea therapies. If infestation is demonstrated in these patients, oral ivermectin in combination with topical permethrin is a safe and effective therapeutic option.

  17. Addition of a breeding database in the Genome Database for Rosaceae.

    Science.gov (United States)

    Evans, Kate; Jung, Sook; Lee, Taein; Brutcher, Lisa; Cho, Ilhyung; Peace, Cameron; Main, Dorrie

    2013-01-01

    Breeding programs produce large datasets that require efficient management systems to keep track of performance, pedigree, geographical and image-based data. With the development of DNA-based screening technologies, more breeding programs perform genotyping in addition to phenotyping for performance evaluation. The integration of breeding data with other genomic and genetic data is instrumental for the refinement of marker-assisted breeding tools, enhances genetic understanding of important crop traits and maximizes access and utility by crop breeders and allied scientists. Development of new infrastructure in the Genome Database for Rosaceae (GDR) was designed and implemented to enable secure and efficient storage, management and analysis of large datasets from the Washington State University apple breeding program and subsequently expanded to fit datasets from other Rosaceae breeders. The infrastructure was built using the software Chado and Drupal, making use of the Natural Diversity module to accommodate large-scale phenotypic and genotypic data. Breeders can search accessions within the GDR to identify individuals with specific trait combinations. Results from Search by Parentage lists individuals with parents in common and results from Individual Variety pages link to all data available on each chosen individual including pedigree, phenotypic and genotypic information. Genotypic data are searchable by markers and alleles; results are linked to other pages in the GDR to enable the user to access tools such as GBrowse and CMap. This breeding database provides users with the opportunity to search datasets in a fully targeted manner and retrieve and compare performance data from multiple selections, years and sites, and to output the data needed for variety release publications and patent applications. The breeding database facilitates efficient program management. Storing publicly available breeding data in a database together with genomic and genetic data will

  18. Papulopustular rosacea, skin immunity and Demodex: pityriasis folliculorum as a missing link.

    Science.gov (United States)

    Forton, F M N

    2012-01-01

    Papulopustular rosacea (PPR) is a common facial skin disease, characterized by erythema, telangiectasia, papules and pustules. Its physiopathology is still being discussed, but recently several molecular features of its inflammatory process have been identified: an overproduction of Toll-Like receptors 2, of a serine protease, and of abnormal forms of cathelicidin. The two factors which stimulate the Toll-like receptors to induce cathelicidin expression are skin infection and cutaneous barrier disruption: these two conditions are, at least theoretically, fulfilled by Demodex, which is present in high density in PPR and creates epithelial breaches by eating cells. So, the major pathogenic mechanisms of Demodex and its role in PPR are reviewed here in the context of these recent discoveries. In this review, the inflammatory process of PPR appears to be a consequence of the proliferation of Demodex, and strongly supports the hypothesis that: (1) in the first stage a specific (innate or acquired) immune defect against Demodex allows the proliferation of the mite; (2) in the second stage, probably when some mites penetrate into the dermis, the immune system is suddenly stimulated and gives rise to an exaggerated immune response against the Demodex, resulting in the papules and the pustules of the rosacea. In this context, it would be very interesting to study the immune molecular features of this first stage, named "pityriasis folliculorum", where the Demodex proliferate profusely with no, or a low immune reaction from the host: this entity appears to be a missing link in the understanding of rosacea. © 2011 The Author. Journal of the European Academy of Dermatology and Venereology © 2011 European Academy of Dermatology and Venereology.

  19. Clinical Findings, Follow-up and Treatment Results in Patients with Ocular Rosacea

    Directory of Open Access Journals (Sweden)

    İlkay Kılıç Müftüoğlu

    2016-02-01

    Full Text Available Objectives: To report the clinical features, treatment options and complications in patients with ocular rosacea. Materials and Methods: The records of 48 eyes of 24 patients with ocular rosacea were retrospectively reviewed. Patients’ ocular signs and symptoms were scored between 1 and 4 points according to disease severity; tear film break-up time (BUT and Schirmer’s test results were recorded before and after the treatment. Preservative-free artificial tears, topical antibiotic eye drops/ointments, short-term topical corticosteroids, topical 0.05% cyclosporine and oral doxycycline treatment were applied as a standard therapy to all patients. Additional treatments were given as needed. Complications were recorded. Results: Twenty-four patients with a mean age of 48.5±35.4 (32-54 years were followed for a mean 15±9.4 (8-36 months. Ocular findings included meibomitis in 100% of cases, anterior blepharitis in 83% (40 eyes, punctate keratopathy in 67% (32 eyes, chalazia in 50% (24 eyes, corneal neovascularization in 50% (24 eyes and subepithelial infiltrates in 16.6% (8 eyes. Significant improvement of symptoms and clinical findings were achieved in all patients with treatment. The increases in Schirmer’s test and BUT were 3.3±1.5 and 4.5±2.8, respectively (p<0.05. Descemetocele and small corneal perforation occurred in 2 eyes; re-epithelialization was achieved in both eyes with tissue adhesive application (1 eye and additional amniotic membrane transplantation (1 eye. Four eyes of three patients showed significant regression of corneal neovascularization with topical bevacizumab therapy. Conclusion: Ocular rosacea may present with a variety of ophthalmic signs. It is possible to control the ophthalmic disease with appropriate therapeutic modalities including topical corticosteroids, topical cyclosporine and systemic doxycycline.

  20. Padus serotina (Rosaceae, a new host plant for some species of parasitic microfungi

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    Nałgorzata Ruszkiewicz-Michalska

    2014-08-01

    Full Text Available Four species of parasitic microfungi were collected recenUy on Padus serotina (Ehrh. Borkh. (Rosaceae in Poland. Three species, Phyllactina guttata (Wallr. ex Fr. Lév. (Erysiphales, Monilia linhartiana Sacc. (Hyphomycetes, and Microsphaeropsis olivacea (Bonord. Höhn. (Coelomycetes, have not been reported before on thc plant, and Padus serotina is a new host for them. Monnilia linhartiana Sacc. is a new species for Poland. The fourth species, Podosphaera tridactyla (Wallr. de Baly var. tridactyla (Erysiphales, is known only from three localities in Europe, and has been collected on the host plant in Poland for the first time.

  1. Cutaneous B-cell chronic lymphocytic leukaemia resembling a granulomatous rosacea.

    Science.gov (United States)

    di Meo, Nicola; Stinco, Giuseppe; Trevisan, Giusto

    2013-10-16

    B-cell chronic lymphocytic leukemia (B-CLL) is a low-grade lymphoproliferative disease. Cutaneous involvement of B-CLL is limited and, in most cases, it represents non-specific manifestations related to an impaired immune system. Leukemic skin infiltrates (leukemia cutis) occur in 4-20% of patients. Herein we report the case of a 65-year-old woman with B-CLL presenting with papular, nodular, and plaque skin infiltrates affecting the nose, mimicking granulomatous rosacea. We discuss several aspects of rare cutaneous manifestations of B-CLL involving the face.

  2. Efficacy and Tolerability of a Cosmetic Skin Care Product With Trans-4-t-butylcyclohexanol and Licochalcone A in Subjects With Sensitive Skin Prone to Redness and Rosacea.

    Science.gov (United States)

    Jovanovic, Zorica; Angabini, Nariman; Ehlen, Sonja; Mokos, Zrinka Bukvic; Subotic, Milica; Neufang, Gitta

    2017-06-01

    BACKGROUND: Sensitive skin and rosacea are skin conditions, which may affect the quality of life of the patients considerably. In vitro and in vivo data indicated that the combination of trans-t-butylcyclohexanol and licochalcone A is an effective combination for alleviating the increased sensitivity of rosacea subtype I. OBJECTIVE: Objective of this open dermocosmetic study was to investigate the efficacy and tolerability of a skin care product containing the anti-inflammatory licochalcone A and the TRPV1 antagonist trans-t-butylcyclohexanol in subjects with sensitive skin prone to redness and rosacea. METHODS: 1221 subjects with sensitive skin and rosacea stage 0-II applied the test product twice daily for 4 weeks. Clinical assessment of sensitive skin and rosacea symptoms were performed at baseline and after 4 weeks. Additionally, at treatment end the test subjects filled a self-assessment questionnaire. RESULTS: After 4 weeks of application, both, clinical and subjective assessment have shown improvement of all symptoms of sensitive skin and rosacea in a significant number of subjects (P less than 0.001). The test product was efficacious and very well tolerated also when used in conjunction with pharmacological treatments of the skin condition under scrutiny. Conclusions: The study confirmed the good tolerability and efficacy of the skin care product in the management of sensitive skin prone to redness and rosacea when used alone or in combination with other therapies. J Drugs Dermatol. 2017;16(6):605-611..

  3. Evaluation of Demodex folliculorum as a Risk Factor for the Diagnosis of Rosacea In Skin Biopsies. Mexico's General Hospital (1975-2010)

    Science.gov (United States)

    Ríos-Yuil, Jose M; Mercadillo-Perez, Patricia

    2013-01-01

    Context: Rosacea significantly affects the quality of life and its pathophysiology is not well understood. It has been suggested that the presence of Demodex folliculorum in the affected skin could be related to the development of rosacea. Aims: To study the risk for association between the presence of D. folliculorum in skin biopsies and the diagnosis of rosacea. Settings and Design: Analytical, observational, retrospective, case–control study. Materials and Methods: Skin biopsies of patients diagnosed clinically as rosacea and the same number of controls were studied. The controls were selected among the facial skin biopsies that were not diagnosed as rosacea. All the slides were analyzed for the presence of D. folliculorum and the density of the infestation was assessed. Statistical Analysis Used: Absolute/relative frequencies, mean, standard deviation, odds ratio (OR), Chi square and Independent Student t-test with Epi Info v. 3.4.3®. Results: D. folliculorum was present in 80% of the skin biopsies of rosacea patients and in 30% of the controls. The risk of suffering rosacea was increased among persons infested with the mite (OR = 9.33 [95% confidence interval: 2.85-30.60]; P = 0.0001). The mean infestation density among the cases was 1.908 for every 10 high-power fields while it was 0.718 among the controls (P < 0.005). There were no statistically significant differences among the groups with regard to sex and age. Conclusions: The presence of D. folliculorum in skin biopsies is associated with the diagnosis of rosacea. The infestation density was increased among the patients with rosacea. PMID:23716816

  4. Evaluation of Demodex folliculorum as a risk factor for the diagnosis of rosacea in skin biopsies. Mexico′s general hospital (1975-2010

    Directory of Open Access Journals (Sweden)

    Jose M Ríos-Yuil

    2013-01-01

    Full Text Available Context: Rosacea significantly affects the quality of life and its pathophysiology is not well understood. It has been suggested that the presence of Demodex folliculorum in the affected skin could be related to the development of rosacea. Aims: To study the risk for association between the presence of D. folliculorum in skin biopsies and the diagnosis of rosacea. Settings and Design: Analytical, observational, retrospective, case-control study. Materials and Methods: Skin biopsies of patients diagnosed clinically as rosacea and the same number of controls were studied. The controls were selected among the facial skin biopsies that were not diagnosed as rosacea. All the slides were analyzed for the presence of D. folliculorum and the density of the infestation was assessed. Statistical Analysis Used: Absolute/relative frequencies, mean, standard deviation, odds ratio (OR, Chi square and Independent Student t-test with Epi Info v. 3.4.3͹ . Results: D. folliculorum was present in 80% of the skin biopsies of rosacea patients and in 30% of the controls. The risk of suffering rosacea was increased among persons infested with the mite (OR = 9.33 [95% confidence interval: 2.85-30.60]; P = 0.0001. The mean infestation density among the cases was 1.908 for every 10 high-power fields while it was 0.718 among the controls ( P < 0.005. There were no statistically significant differences among the groups with regard to sex and age. Conclusions: The presence of D. folliculorum in skin biopsies is associated with the diagnosis of rosacea. The infestation density was increased among the patients with rosacea.

  5. Characterization of the MLO gene family in Rosaceae and gene expression analysis in Malus domestica.

    Science.gov (United States)

    Pessina, Stefano; Pavan, Stefano; Catalano, Domenico; Gallotta, Alessandra; Visser, Richard G F; Bai, Yuling; Malnoy, Mickael; Schouten, Henk J

    2014-07-22

    Powdery mildew (PM) is a major fungal disease of thousands of plant species, including many cultivated Rosaceae. PM pathogenesis is associated with up-regulation of MLO genes during early stages of infection, causing down-regulation of plant defense pathways. Specific members of the MLO gene family act as PM-susceptibility genes, as their loss-of-function mutations grant durable and broad-spectrum resistance. We carried out a genome-wide characterization of the MLO gene family in apple, peach and strawberry, and we isolated apricot MLO homologs through a PCR-approach. Evolutionary relationships between MLO homologs were studied and syntenic blocks constructed. Homologs that are candidates for being PM susceptibility genes were inferred by phylogenetic relationships with functionally characterized MLO genes and, in apple, by monitoring their expression following inoculation with the PM causal pathogen Podosphaera leucotricha. Genomic tools available for Rosaceae were exploited in order to characterize the MLO gene family. Candidate MLO susceptibility genes were identified. In follow-up studies it can be investigated whether silencing or a loss-of-function mutations in one or more of these candidate genes leads to PM resistance.

  6. Topical corticosteroid-induced rosacea-like dermatitis: A clinical study of 110 cases

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    Sanjay K Rathi

    2011-01-01

    Full Text Available Background: Prolonged and continuous use of topical steroids leads to rosacea-like dermatitis with variable clinical presentations. Aims: To study the various clinical presentations of patients with topical corticosteroid-induced rosacea-like dermatitis (TCIRD, who had a history of prolonged and repeated use of topical steroids for reasons other than the known disease entities. Methods: A total of 110 patients were enrolled for the study over a period of 2 years, excluding all those with the known disease entity in which topical steroids were commonly used. Detailed history which also included the source and the type of topical steroid use was taken along with clinical examination. Results: There were 12 males and 98 females with their age ranging from 18 to 54 years. The duration of topical steroid use ranged from 4 months to 20 years. The most common clinical presentation was diffuse erythema of the face. Most of the patients had rebound phenomenon on discontinuation of the steroid. The most common topical steroid used was Betamethasone valerate, which could be due to its easy availability and low cost. Conclusion: Varied clinical presentations are seen with prolonged and continuous use of topical steroids. The treatment of this dermatitis is difficult, requiring complete cessation of the offending steroid, usually done in a tapering fashion.

  7. Defining treatment success in rosacea as 'clear' may provide multiple patient benefits: results of a pooled analysis.

    Science.gov (United States)

    Webster, Guy; Schaller, Martin; Tan, Jerry; Jackson, J Mark; Kerrouche, Nabil; Schäfer, Gregor

    2017-08-01

    Rosacea treatment success is usually defined as a score of 1 ('almost clear') or 0 ('clear') on the 5-point Investigator Global Assessment (IGA) scale. To evaluate whether, after successful treatment, 'clear' subjects had better outcomes than 'almost clear' subjects. A pooled analysis was performed on 1366 rosacea subjects from four randomized controlled trials with IGA before and after treatment (ivermectin, metronidazole or vehicle). Assessments included the Dermatology Life Quality Index (DLQI) questionnaire and subject assessment of rosacea improvement. In one trial, patients were followed after the treatment period to measure time to relapse (IGA score ≥2). At end of treatment, more 'clear' than 'almost clear' subjects had a clinically meaningful difference in DLQI (59% vs. 44%; p rosacea (77% vs. 42%; p < .001). The median time to relapse was more than 8 months for 'clear' vs. 3 months for 'almost clear' subjects (p < .0001). Achieving an endpoint of 'clear' (IGA 0) vs. 'almost clear' (IGA 1) is associated with multiple positive patient outcomes, including delayed time to relapse.

  8. OPTIMIZATION OF LAMBLIASIS MICROSCOPIC DIAGNOSTICS BY THE METHOD OF POLARIZED FLUORESCENCE FOR PATIENTS WITH ROSACEA AND URTICARIAL

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    Maryana Kovalchuk

    2013-07-01

    Full Text Available Introduction: There is little information about diagnosis of concurrent lambliasis in patients with rosacea and urticaria. We used method of polarized fluorescence to diagnose liambliasis, taking into account belonging of macromolecular structures of unicellular parasites Giardia lamblia to the optically active substances with the properties of liquid crystals. Material and Methods: Lambliasis was diagnosed on the basis of feces parasitological research and duodenal contents by methods of light and optic microscopy and polarized fluorescence in 105 patients with rosacea and urticaria. Research results were processed by the method of variation statistics in the Statgraf program by using Student’s criterion. Results: Search results of lamblia in patients with rosacea and urticaria depended on the conditions of its holding, patients’ preparation and from the previously received basic therapy if it consisted absorbents. Due to the fact that the fluorescence polarization as a physical method does not require the use of any generally toxic, dye- fluorochromes, qualitative cyto fluorescent analysis of lamblia in greeting microdrugs enables to distinguish vegetative forms of cysts. Conclussions: Polarized fluorescence method allows optimize the microscopic diagnosis of lambliasis, increasing its sensitivity. Previous preparation for the laboratory examination of Giardia lamblia is needed for the best exposure of vermin for patients with rosacea and urticaria.

  9. Evolution of Rosaceae Fruit Types Based on Nuclear Phylogeny in the Context of Geological Times and Genome Duplication.

    Science.gov (United States)

    Xiang, Yezi; Huang, Chien-Hsun; Hu, Yi; Wen, Jun; Li, Shisheng; Yi, Tingshuang; Chen, Hongyi; Xiang, Jun; Ma, Hong

    2017-02-01

    Fruits are the defining feature of angiosperms, likely have contributed to angiosperm successes by protecting and dispersing seeds, and provide foods to humans and other animals, with many morphological types and important ecological and agricultural implications. Rosaceae is a family with ∼3000 species and an extraordinary spectrum of distinct fruits, including fleshy peach, apple, and strawberry prized by their consumers, as well as dry achenetum and follicetum with features facilitating seed dispersal, excellent for studying fruit evolution. To address Rosaceae fruit evolution and other questions, we generated 125 new transcriptomic and genomic datasets and identified hundreds of nuclear genes to reconstruct a well-resolved Rosaceae phylogeny with highly supported monophyly of all subfamilies and tribes. Molecular clock analysis revealed an estimated age of ∼101.6 Ma for crown Rosaceae and divergence times of tribes and genera, providing a geological and climate context for fruit evolution. Phylogenomic analysis yielded strong evidence for numerous whole genome duplications (WGDs), supporting the hypothesis that the apple tribe had a WGD and revealing another one shared by fleshy fruit-bearing members of this tribe, with moderate support for WGDs in the peach tribe and other groups. Ancestral character reconstruction for fruit types supports independent origins of fleshy fruits from dry-fruit ancestors, including the evolution of drupes (e.g., peach) and pomes (e.g., apple) from follicetum, and drupetum (raspberry and blackberry) from achenetum. We propose that WGDs and environmental factors, including animals, contributed to the evolution of the many fruits in Rosaceae, which provide a foundation for understanding fruit evolution. © The Author 2016. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution.

  10. A Randomized-Controlled Trial of Oral Low-Dose Isotretinoin for Difficult-To-Treat Papulopustular Rosacea.

    Science.gov (United States)

    Sbidian, Emilie; Vicaut, Éric; Chidiack, Henri; Anselin, Elie; Cribier, Bernard; Dréno, Brigitte; Chosidow, Olivier

    2016-06-01

    Rosacea is a chronic inflammatory facial skin disease with psychosocial impact. Oral cyclines are recommended for moderate-to-severe papulopustular rosacea. Oral isotretinoin was found valuable for difficult-to-treat cases in several reports. This multicenter, double-blind, randomized-placebo-controlled trial compared oral isotretinoin (0.25 mg/kg/day) with placebo (2:1 ratio) for difficult-to-treat papulopustular rosacea. Included patients had at least eight papulopustular lesions. The primary endpoint after the 4-month treatment period was the response rate: at least 90% reduction of the number of papules/pustules compared with baseline. Secondary outcomes included measures on quality of life (Skindex score). Between February 2007 and August 2009, 156 patients were randomized to receive either isotretinoin (n = 108) or placebo (n = 48). In the intention-to-treat population, 57.4% of isotretinoin recipients reached the primary endpoint, compared with 10.4% of those taking the placebo (absolute difference, 47 percentage points; 95% confidence interval, 34.3-59.7; P isotretinoin- than placebo-treated patients. Rosacea relapsed in 27 (58.3%) of 51 patients who accepted 4 months of continued follow-up, with a median of 15 weeks to recurrence. The percentages of patients in each arm who stopped their treatment because of adverse event(s) did not differ. Low-dose isotretinoin was an effective therapeutic option for difficult-to-treat papulopustular rosacea. Further studies should investigate the value of a minimal effective isotretinoin dose to maintain these remissions. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

  11. An observational descriptive survey of rosacea in the Chinese population: clinical features based on the affected locations

    Directory of Open Access Journals (Sweden)

    Hong-fu Xie

    2017-07-01

    Full Text Available Background There is currently no study that has evaluated the differences in epidemiological and clinical characteristics among rosacea patients according to different facial sites. Methods Clinical and demographic data were obtained from 586 rosacea patients. The patients were divided into four groups based on the main sites involved with the rosacea lesions (full-face, cheeks, nose, or perioral involvement. Clinical signs were measured through self-reported, dermatologist-evaluated grading of symptoms, and physiological indicators of epidermal barrier function. Results There were 471 (80.4%, 49 (8.4%, 52 (8.9%, and 14 (2.4% cases in the full-face, cheek, nasal and perioral groups, respectively. Compared with the healthy control, the full-face group had lower water content and higher transepidermal water loss (TEWL in the cheeks, and chin; the perioral group had lower water content and higher TEWL in the chin; while the nasal group had the normal water content and TEWL. Compared with the full-face group, the nasal group had more severe phymatous changes, less severe self-reported and dermatologist-evaluated grading of symptoms. All the patients in the perioral or the nasal group had their first rosacea lesions start and remain at the chin or on the nose. In the full-face group, 55.8% of patients had their lesions start with the full face, 40.1% on the cheek, and the rest (4.1% on the nose. Conclusion Significant differences in clinical features were observed among rosacea patients with lesions at four different sites. The lesion localization of each group was relatively stable and barely transferred to other locations.

  12. Correlation between serum reactivity to Demodex-associated Bacillus oleronius proteins, and altered sebum levels and Demodex populations in erythematotelangiectatic rosacea patients

    OpenAIRE

    Jarmuda, Stanislaw; McMahon, Fred; Zaba, Ryszard; O'Reilly, Niamh; Jakubowicz, Oliwia; Holland, Ashling; Szkaradkiewicz, Andrzej; Kavanagh, Kevin

    2014-01-01

    Rosacea is a chronic inflammatory condition that affects the skin of the face and the eyes. The aetiology of rosacea is not clearly established but increasing evidence suggests a potential role for bacteria in the induction of the condition. A role for Bacillus oleronius, originally isolated from within a Demodex folliculorum mite, in the aetiology of the condition has been suggested. The aim of the study was to determine whether a correlation existed between the level of sebum an...

  13. The use of medicinal cosmetics in the complete treatment of rosacea

    Directory of Open Access Journals (Sweden)

    O. P. Kileeva

    2018-03-01

    Full Text Available The aim of work is to carry out literature analysis about etiology and pathogenesis, classification and methods for rosacea correction, to conduct marketing research of the pharmaceutical market of medical cosmetics, to identify the main groups of biologically active substances in their composition. Materials and methods. In the course of the research we analyzed the pharmaceutical market of Ukraine for the availability of pharmaceutical cosmetics (price policy of the manufacturer and the composition of biologically active substances. Results. The medicinal cosmetic products (MCP for the skin prone to couperose and rosacea are represented by the products of Ukraine and foreign manufacturers - namely, France, Canada, Poland and Russia. French anti-cure agents are represented by the following companies: Avene, La Roche, Ducray, Uriage, Lierac, Nuxe, Ukrainian – Stop Cuperoz, Polish - Clarena, Canada by Galderma and Russian – Cora.When reviewing the biologically active components of MCP presented in the market it is evident that they include a large number of extracts, vitamins, essential oils, vegetable oils, organic acids, as well as proprietary complexes. Predominantly, these substances are anti-inflammatory, venotonic, anti-edema, reduce vascular permeability and strengthen the walls of capillaries. Gel, lotions, tonics, emulsions, milk, creams and thermal water are selected as cosmetic forms. Conclusions. On the basis of the literature analysis, the main causes of occurrence, pathogenesis of rosacea (couperose and methods of its correction were established. Statistical and comparative methods were used in the research process. As a result of the research of the market of anticorrosion agents, it was established that MCP are represented by foreign manufacturers, the vast majority of which are French (75 %. 18.8 % of the data are made by manufacturers of Canada, Poland and Russia. Ukrainian MCP are represented by "PhytoBioTechnologies "

  14. Randomised controlled trial of topical kanuka honey for the treatment of rosacea

    Science.gov (United States)

    Braithwaite, Irene; Hunt, Anna; Riley, Judith; Fingleton, James; Kocks, Janwillem; Corin, Andrew; Helm, Colin; Sheahan, Davitt; Tofield, Christopher; Montgomery, Barney; Holliday, Mark; Weatherall, Mark; Beasley, Richard

    2015-01-01

    Objective To investigate the efficacy of topical 90% medical-grade kanuka honey and 10% glycerine (Honevo) as a treatment for rosacea. Design Randomised controlled trial with blinded assessment of primary outcome variable. Setting Outpatient primary healthcare population from 5 New Zealand sites. Participants 138 adults aged ≥16, with a diagnosis of rosacea, and a baseline blinded Investigator Global Assessment of Rosacea Severity Score (IGA-RSS) of ≥2. 69 participants were randomised to each treatment arm. 1 participant was excluded from the Honevo group, and 7 and 15 participants withdrew from the Honevo and control groups, respectively. Interventions Participants were randomly allocated 1:1 to Honevo or control cream (Cetomacrogol), applied twice daily for 8 weeks. Main outcome measures The primary outcome measure was the proportion of participants who had a ≥2 improvement in the 7-point IGA-RSS at week 8 compared to baseline. Secondary outcomes included change in IGA-RSS and subject-rated visual analogue score of change in severity (VAS-CS) on a 100 mm scale (0 mm ‘much worse’, 100 mm ‘much improved’) at weeks 2 and 8. Results 24/68 (34.3%) in the Honevo group and 12/69 (17.4%) in the control group had a ≥2 improvement in IGA-RSS at week 8 compared to baseline (relative risk 2.03; 95% CI 1.11 to 3.72, p=0.020). The change in IGA-RSS for Honevo compared to control at week 2 minus baseline was −1 (Hodges-Lehman estimate, 95% CI −1 to 0, p=0.03), and at week 8 minus baseline was −1 (Hodges-Lehman estimate, 95% CI −1 to 0, p=0.005). The VAS-CS at week 2 was 9.1 (95% CI 3.5 to 14.7), p=0.002, and at week 8 was 12.3 (95% CI 5.7 to 18.9)¸ prosacea. Trial registration number This trial was registered in the Australian and New Zealand Clinical Trials Registry ACTRN12614000004662. PMID:26109117

  15. Efficiency of benzoyl peroxide-erythromycin gel in comparison with metronidazole gel in the treatment of acne rosacea.

    Science.gov (United States)

    Oztürkcan, Serap; Ermertcan, Aylin Türel; Sahin, M Turhan; Afşar, F Sule

    2004-08-01

    Oral wide-spectrum antibiotics are the linchpin of rosacea treatment. Oral and topical metronidazole, topical tretinoin, and topical benzoyl peroxide may also be used in the treatment of rosacea. We aimed to show that benzoyl peroxide-erythromycin gel is efficient in the treatment of acne rosacea. Fifty-six patients with acne rosacea were enrolled in our study. We administered benzoyl peroxide-erythromycin gel to 27 patients and metronidazole gel to 29 patients. In all the patients, the intensities of erythema, telangiectasia, papules/pustules, and nodules were evaluated before, during and after the treatment. The positivity of Demodex folliculorum from skin scratches was compared between the two groups at each visit. At the end of the therapy on the third examination, in the benzoyl peroxide-erythromycin group, 91.7% of the patients showed marked clinical improvement, and 8.3% of them showed complete remission. In the metronidazole group, 73.3% showed marked clinical improvement, and 26.7% of them showed complete remission. Clinical improvement in the papular component was 65.2% for the benzoyl peroxide-erythromycin group, and 81.5% for metronidazole group. In the first examination, the clinical results of the agents were similar. Although both of the drugs were found to be effective in the second and third examinations, metronidazole gel was more effective than benzoyl peroxide-erythromycin. Both of the drugs were found to be significantly effective especially in treating the papular component of rosacea. Demodex folliculorum was found to be positive in 74.1% of the benzoyl peroxide-erythromycin group and in 62.1% of the metronidazole group at the beginning. In the benzoyl peroxide-erythromycin group, 40.7% of Demodex folliculorum positive patients, became negative by the first examination. This was 17.2% for the metronidazole group. In the benzoyl peroxide-erythromycin group, among the patients who were positive for Demodex folliculorum in the first examination

  16. Past climate change and plant evolution in Western North America: a case study in Rosaceae.

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    Mats Töpel

    Full Text Available Species in the ivesioid clade of Potentilla (Rosaceae are endemic to western North America, an area that underwent widespread aridification during the global temperature decrease following the Mid-Miocene Climatic Optimum. Several morphological features interpreted as adaptations to drought are found in the clade, and many species occupy extremely dry habitats. Recent phylogenetic analyses have shown that the sister group of this clade is Potentilla section Rivales, a group with distinct moist habitat preferences. This has led to the hypothesis that the ivesioids (genera Ivesia, Horkelia and Horkeliella diversified in response to the late Tertiary aridification of western North America. We used phyloclimatic modeling and a fossil-calibrated dated phylogeny of the family Rosaceae to investigate the evolution of the ivesioid clade. We have combined occurrence- and climate data from extant species, and used ancestral state reconstruction to model past climate preferences. These models have been projected into paleo-climatic scenarios in order to identify areas where the ivesioids may have occurred. Our analysis suggests a split between the ivesioids and Potentilla sect. Rivales around Late Oligocene/Early Miocene (∼23 million years ago, Ma, and that the ivesioids then diversified at a time when summer drought started to appear in the region. The clade is inferred to have originated on the western slopes of the Rocky Mountains from where a westward range expansion to the Sierra Nevada and the coast of California took place between ∼12-2 Ma. Our results support the idea that climatic changes in southwestern North America have played an important role in the evolution of the local flora, by means of in situ adaptation followed by diversification.

  17. The Role of Topical Brimonidine Tartrate Gel as a Novel Therapeutic Option for Persistent Facial Erythema Associated with Rosacea.

    Science.gov (United States)

    Johnson, Andrew William; Johnson, Sandra Marchese

    2015-09-01

    Rosacea is a chronic inflammatory skin condition that commonly presents with persistent facial erythema with or without the coincident presence of flushing, telangiectasias, inflammatory papules or pustules, phymatous changes, or ocular involvement. Patients often present with a constellation of various signs and symptoms of the disease, and an individualized treatment plan should be tailored to a patient's unique clinical presentation. Previously available medications for rosacea have all targeted the inflammatory erythematous papules and pustules frequently associated with the disease, leaving a therapeutic gap for the common manifestation of persistent facial erythema. Brimonidine tartrate 0.33% gel was approved by the US Food and Drug Administration in August 2013 as the first medication available for the topical treatment of persistent facial erythema associated with rosacea. Brimonidine gel is a highly selective α2-adrenergic receptor agonist with potent vasoconstrictive effects, which leads to significant reduction of persistent facial erythema in the majority of patients when applied once daily. Based on large-scale clinical trials and post-marketing reports, brimonidine gel has maintained a good safety profile with a minority of patients experiencing adverse effects from its use, most of which are cutaneous in nature, mild-to-moderate in degree, occur early after initiation of treatment, often resolve spontaneously with continued use, and generally resolve after discontinuation of use. Among the reported adverse effects, two distinct manifestations of worsened erythema have been described. Brimonidine gel can be integrated into a treatment regimen along with concomitant therapies for facial papules and pustules with no increased risk of adverse events with combination therapy. Education about optimal application methods, setting reasonable expectations for treatment, and minimizing inflammation are important factors for the successful use of brimonidine

  18. Objective severity does not capture the impact of rosacea, acne scarring and photoaging in patients seeking laser therapy.

    Science.gov (United States)

    Thomas, C L; Kim, B; Lam, J; Richards, S; See, A; Kalouche, S; Paver, R D; Fernández Peñas, P

    2017-02-01

    Measures of quality of life (QOL) and patient satisfaction are of great importance in dermatology, as both impact upon treatment adherence and health outcomes. Patients' assessment of QOL often differs from their doctors' predictions and their assessments of skin disease severity do not correlate with patients' own perceptions. The development of laser technology has facilitated successful treatment of many skin conditions, but studies on patient satisfaction are lacking. Our aim was to determine the extent of discordance between patient and dermatologist-assessed disease severity and assess the impact of acne scarring, rosacea and photoaging on QOL. Our secondary aim was to assess patient satisfaction with laser therapy. A prospective study of patients undergoing laser treatment for acne scarring, rosacea and photoaging was conducted over 1 year at the Skin & Cancer Foundation Australia. Subjective disease severity was determined using a visual analogue scale (VAS). Two dermatologists determined objective severity using validated grading scales to score photographs. QOL impact was measured by Skindex-16, satisfaction was measured using an amended Comprehensive Satisfaction Questionnaire (PSQ-18). A total of 147 individuals sought laser therapy for acne scarring, rosacea and photoaging. Dermatologists' subjective disease severity correlated weakly with patient-reported severity. All conditions negatively impacted upon QOL. Patients with rosacea had the most symptomatic impact; acne scarring was associated with the greatest self-esteem and social functioning issues; photoaging patients were the least affected. There were significant correlations between subjective severity assessment and Skindex-16 scores. There was notable discordance between dermatologist's skin severity assessment and patient's self-reported QOL impact. Skin conditions can have a profound impact on patient QOL, which is affected by patients' perception of disease severity and not fully

  19. Rosacea villafrancae sp. n., un nouveau siphonophore calycophore Prayinae de la mer Méditerranée

    NARCIS (Netherlands)

    Carré, Claude

    1969-01-01

    Un nouveau siphonophore Prayinae, pêché en Méditerranée est décrit sous le nom de Rosacea villafrancae sp. n. Le somatocyste dont la portion distale pénètre profondément dans la mésoglée, les cannaux latéraux non sinueux des nectophores, la morphologie des canaux bractéaux et la présence de

  20. Spotlight on brimonidine topical gel 0.33% for facial erythema of rosacea: safety, efficacy, and patient acceptability

    Science.gov (United States)

    Anderson, Michael S; Nadkarni, Anish; Cardwell, Leah A; Alinia, Hossein; Feldman, Steven R

    2017-01-01

    Background Brimonidine tartrate is a highly selective alpha 2 agonist that induces direct vasoconstriction of small arteries and veins, thereby reducing vasodilation and edema. Objective To review the current literature regarding the safety, efficacy, and patient acceptability of brimonidine 0.33% gel. Methods A PubMed search was performed using the terms brimonidine 0.33% gel, rosacea, safety, efficacy, and acceptability. Peer-reviewed clinical trials and case reports from 2012 to 2016 were screened for inclusion of safety, efficacy, and/or patient acceptability data. Results Brimonidine topical gel 0.33% is associated with mild, transient skin-related adverse reactions. Efficacy may be achieved within 30 minutes of administration with maximal reductions in erythema 3–6 hours after administration. Patient satisfaction with use of brimonidine topical gel is superior to vehicle gel for facial appearance, treatment effect, facial redness, and daily control of facial redness. Limitations Studies were typically limited to 1-year follow-up. Only one study has examined the use of brimonidine topical gel in combination with other rosacea and acne medications. Discussion Brimonidine topical gel 0.33% is a safe, effective, and patient-accepted treatment for facial erythema of rosacea. PMID:28740369

  1. The application of multiplex fluorimetric sensor for the analysis of flavonoids content in the medicinal herbs family Asteraceae, Lamiaceae, Rosaceae.

    Science.gov (United States)

    Sytar, Oksana; Bruckova, Klaudia; Hunkova, Elena; Zivcak, Marek; Konate, Kiessoun; Brestic, Marian

    2015-01-16

    The aim of our research work was to quantify total flavonoid contents in the leaves of 13 plant species family Asteraceae, 8 representatives of family Lamiaceae and 9 plant species belonging to family Rosaceae, using the multiplex fluorimetric sensor. Fluorescence was measured using optical fluorescence apparatus Multiplex(R) 3 (Force-A, France) for non-destructive flavonoids estimation. The content of total flavonoids was estimated by FLAV index (expressed in relative units), that is deduced from flavonoids UV absorbing properties. Among observed plant species, the highest amount of total flavonoids has been found in leaves of Helianthus multiflorus (1.65 RU) and Echinops ritro (1.27 RU), Rudbeckia fulgida (1.13 RU) belonging to the family Asteraceae. Lowest flavonoid content has been observed in the leaves of marigold (Calendula officinalis) (0.14 RU) also belonging to family Asteraceae. The highest content of flavonoids among experimental plants of family Rosaceae has been estimated in the leaves of Rosa canina (1.18 RU) and among plant species of family Lamiaceae in the leaves of Coleus blumei (0.90 RU). This research work was done as pre-screening of flavonoids content in the leaves of plant species belonging to family Asteraceae, Lamiaceae and Rosaceae. Results indicated that statistically significant differences (P > 0.05) in flavonoids content were observed not only between families, but also among individual plant species within one family.

  2. A randomized, double-blind, placebo-controlled, pilot study to assess the efficacy and safety of clindamycin 1.2% and tretinoin 0.025% combination gel for the treatment of acne rosacea over 12 weeks.

    Science.gov (United States)

    Chang, Anne Lynn S; Alora-Palli, Maria; Lima, Xinaida T; Chang, Tiffany C; Cheng, Carol; Chung, Connie M; Amir, Omar; Kimball, Alexa B

    2012-03-01

    Papulopustular acne rosacea is a chronic inflammatory condition which can be difficult to treat. Many patients are unwilling to use systemic medications, and single topical agents alone may not address all the symptoms of rosacea. A combination topical clindamycin phosphate 1.2% and tretinoin 0.025% gel is efficacious for acne vulgaris, and may be helpful for rosacea, since acne vulgaris and rosacea shares many similar clinical and histologic features. To assess the preliminary efficacy and safety of a combination gel consisting of clindamycin phosphate 1.2% and tretinoin 0.025% on papulopustular rosacea after 12 weeks of usage. Randomized, double-blind, placebo controlled two site study of 79 participants with moderate to severe papulopustular acne rosacea using both physician and subjects' validated assessment tools. Primary endpoint consisted of statistically significant reduction in absolute papule or pustule count after 12 weeks of usage. There was no significant difference in papule/pustule count between placebo and treated groups after 12 weeks (P=0.10). However, there was nearly significant improvement in physicians' assessments of the telangiectasia component of rosacea (P=0.06) and erythematotelangiectatic rosacea subtype (P=0.05) in treated versus placebo group after 12 weeks. The only significant adverse event different was facial scaling, which was significantly increased in treated group (P=0.01), but this did not result in discontinuation of study drug. A combination gel of clindamycin phosphate 1.2% and tretinoin 0.025% may improve the telangiectatic component of rosacea and appears to better treat the erythemotelangiectatic subtype of rosacea rather than papulopustular subtype. Our preliminary study suggests that future studies with much larger sample size might confirm our findings.

  3. Morfo-anatomia das folhas da nespereira Eriobotrya japonica Lindl., Rosaceae

    Directory of Open Access Journals (Sweden)

    W. M. de Souza

    Full Text Available Eriobotrya japonica, Rosaceae, é uma espécie conhecida popularmente como nespereira, cujas folhas são empregadas na medicina tradicional como agente hipoglicemiante e no tratamento de doenças da pele. O presente trabalho objetivou caracterizar morfo-anatomicamente as folhas, a fim de fornecer subsídios farmacognósticos ao controle de qualidade da droga vegetal e taxonômicos à família. O material botânico foi fixado e submetido às técnicas usuais de microscopia ótica e eletrônica de varredura. As folhas são simples, alternas, lanceoladas, de limbo inteiro e margem denteada. A epiderme foliar é uniestratificada e revestida por cutícula espessada e levemente estriada. Tricomas tectores unicelulares longos são encontrados em ambas as faces, sendo numerosos na abaxial. A folha é hipoestomática, revelando estômatos anomocíticos. O mesofilo é dorsiventral e os feixes vasculares de pequeno porte são colaterais e podem apresentar extensão de bainha. A nervura principal possui formato biconvexo e o pecíolo circular, sendo ambos percorridos por feixes vasculares anficrivais. Foram observados idioblastos contendo cristais de oxalato de cálcio, mucilagem e compostos fenólicos.

  4. Topographic and biomechanical evaluation of corneas in patients with ocular rosacea.

    Science.gov (United States)

    Yildirim, Yusuf; Olcucu, Onur; Agca, Alper; Karakucuk, Yalcin; Alagoz, Nese; Mutaf, Cagri; Demirok, Ahmet; Kutlubay, Zekayi

    2015-03-01

    To compare the topographic and biomechanical properties of corneas in the eyes of patients with ocular rosacea (OR) with those of healthy individuals. Thirty-four healthy individuals (control group) and 34 patients with OR (study group) were evaluated in this study. Topographic measurements including keratometry values, irregularity, and surface asymmetry index in the right eye of each participant were obtained using a Scheimpflug camera with a Placido disc topographer (Sirius). Corneal hysteresis (CH), corneal resistance factor (CRF), corneal-compensated intraocular pressure (IOP), and Goldmann-related IOP were measured using the Reichert Ocular Response Analyzer. Central corneal thickness was also measured using ultrasonic pachymetry and the Sirius corneal topography system. Topographic parameters were not significantly different between the groups (P > 0.05). Mean CH and CRF were significantly lower in patients with OR (P = 0.003 and 0.001, respectively). Central corneal thickness was significantly lower in patients with OR compared with healthy controls (P biomechanical measurements (CH and CRF) were significantly lower in patients with OR. These results need to be considered when planning corneal refractive surgery in patients with OR.

  5. Two Consecutive Standardized Skin Surface Biopsies: An Improved Sampling Method to Evaluate Demodex Density as a Diagnostic Tool for Rosacea and Demodicosis.

    Science.gov (United States)

    Forton, Fabienne M N; De Maertelaer, Viviane

    2017-02-08

    Diagnosing papulopustular rosacea is not always straightforward; no specific diagnostic test is currently available. A high density of Demodex mites is consistently observed in this condition. This retrospective study assesses an improved method for evaluating Demodex density among 1,044 patients presenting to our dermatology practice. The skin was cleaned with ether and Demodex densities were measured in 2 consecutive standardized skin surface biopsies taken from the same site. Mean densities in patients with rosacea and demodicosis were much higher than those in healthy controls and patients with other facial dermatoses. The optimal cut-off values for the 2 biopsies were combined and the resultant criterion (presence of a first biopsy density rosacea or demodicosis with a sensitivity of 98.7% and specificity of 95.5%, making this a valuable diagnostic tool for dermatologists in routine clinical practice.

  6. Plastid genome sequence of a wild woody oil species, Prinsepia utilis, provides insights into evolutionary and mutational patterns of Rosaceae chloroplast genomes.

    Science.gov (United States)

    Wang, Shuo; Shi, Chao; Gao, Li-Zhi

    2013-01-01

    Prinsepiautilis Royle is a wild woody oil species of Rosaceae that yields edible oil which has been proved to possess particular benefits for human health and medical therapy. However, the lack of bred varieties has largely impeded exploiting immense potentials for high quality of its seed oil. It is urgently needed to enlarge the knowledge of genetic basis of the species and develop genetic markers to enhance modern breeding programs. Here we reported the complete chloroplast (cp) genome of 156,328 bp. Comparative cp sequence analyses of P. utilis along with other four Rosaceae species resulted in similar genome structures, gene orders, and gene contents. Contraction/expansion of inverted repeat regions (IRs) explained part of the length variation in the Rosaceae cp genomes. Genome sequence alignments revealed that nucleotide diversity was associated with AT content, and large single copy regions (LSC) and small single copy regions (SSC) harbored higher sequence variations in both coding and non-coding regions than IRs. Simple sequence repeats (SSRs) were detected in the P. utilis and compared with those of the other four Rosaceae cp genomes. Almost all the SSR loci were composed of A or T, therefore it might contribute to the A-T richness of cp genomes and be associated with AT biased sequence variation. Among all the protein-coding genes, ycf1 showed the highest sequence divergence, indicating that it could accomplish the discrimination of species within Rosaceae as well as within angiosperms better than other genes. With the addition of this new sequenced cp genome, high nucleotide substitution rate and abundant deletions/insertions were observed, suggesting a greater genomic dynamics than previously explored in Rosaceae. The availability of the complete cp genome of P. utilis will provide chloroplast markers and genetic information to better enhance the conservation and utilization of this woody oil plant.

  7. Plastid genome sequence of a wild woody oil species, Prinsepia utilis, provides insights into evolutionary and mutational patterns of Rosaceae chloroplast genomes.

    Directory of Open Access Journals (Sweden)

    Shuo Wang

    Full Text Available BACKGROUND: Prinsepiautilis Royle is a wild woody oil species of Rosaceae that yields edible oil which has been proved to possess particular benefits for human health and medical therapy. However, the lack of bred varieties has largely impeded exploiting immense potentials for high quality of its seed oil. It is urgently needed to enlarge the knowledge of genetic basis of the species and develop genetic markers to enhance modern breeding programs. RESULTS: Here we reported the complete chloroplast (cp genome of 156,328 bp. Comparative cp sequence analyses of P. utilis along with other four Rosaceae species resulted in similar genome structures, gene orders, and gene contents. Contraction/expansion of inverted repeat regions (IRs explained part of the length variation in the Rosaceae cp genomes. Genome sequence alignments revealed that nucleotide diversity was associated with AT content, and large single copy regions (LSC and small single copy regions (SSC harbored higher sequence variations in both coding and non-coding regions than IRs. Simple sequence repeats (SSRs were detected in the P. utilis and compared with those of the other four Rosaceae cp genomes. Almost all the SSR loci were composed of A or T, therefore it might contribute to the A-T richness of cp genomes and be associated with AT biased sequence variation. Among all the protein-coding genes, ycf1 showed the highest sequence divergence, indicating that it could accomplish the discrimination of species within Rosaceae as well as within angiosperms better than other genes. CONCLUSIONS: With the addition of this new sequenced cp genome, high nucleotide substitution rate and abundant deletions/insertions were observed, suggesting a greater genomic dynamics than previously explored in Rosaceae. The availability of the complete cp genome of P. utilis will provide chloroplast markers and genetic information to better enhance the conservation and utilization of this woody oil plant.

  8. Idiopathic Facial Aseptic Granuloma in a 13-Year-Old Boy Dramatically Improved with Oral Doxycycline and Topical Metronidazole: Evidence for a Link with Childhood Rosacea

    Directory of Open Access Journals (Sweden)

    Camille Orion

    2016-07-01

    Full Text Available Idiopathic facial aseptic granuloma (IFAG is a rare, benign pediatric dermatological lesion that occurs in children between 8 months and 13 years of age. The pathogenesis of IFAG is still unclear but it is likely to be associated with granulomatous rosacea in childhood. Here we describe a case of IFAG in a 13-year-old boy who showed a dramatic response to oral doxycycline and topical metronidazole, which supports the hypothesis that IFAG may belong to the spectrum of rosacea.

  9. Spotlight on brimonidine topical gel 0.33% for facial erythema of rosacea: safety, efficacy, and patient acceptability

    Directory of Open Access Journals (Sweden)

    Anderson MS

    2017-07-01

    Full Text Available Michael S Anderson,1 Anish Nadkarni,1 Leah A Cardwell,1 Hossein Alinia,1 Steven R Feldman1–3 1Department of Dermatology, Center for Dermatology Research, 2Department of Pathology, 3Department of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA Background: Brimonidine tartrate is a highly selective alpha 2 agonist that induces direct vasoconstriction of small arteries and veins, thereby reducing vasodilation and edema. Objective: To review the current literature regarding the safety, efficacy, and patient acceptability of brimonidine 0.33% gel.Methods: A PubMed search was performed using the terms brimonidine 0.33% gel, rosacea, safety, efficacy, and acceptability. Peer-reviewed clinical trials and case reports from 2012 to 2016 were screened for inclusion of safety, efficacy, and/or patient acceptability data.Results: Brimonidine topical gel 0.33% is associated with mild, transient skin-related adverse reactions. Efficacy may be achieved within 30 minutes of administration with maximal reductions in erythema 3–6 hours after administration. Patient satisfaction with use of brimonidine topical gel is superior to vehicle gel for facial appearance, treatment effect, facial redness, and daily control of facial redness.Limitations: Studies were typically limited to 1-year follow-up. Only one study has examined the use of brimonidine topical gel in combination with other rosacea and acne medications.Discussion: Brimonidine topical gel 0.33% is a safe, effective, and patient-accepted treatment for facial erythema of rosacea. Keywords: patient satisfaction, adverse reactions, side effects 

  10. A study of the pathogenesis of rosacea: how angiogenesis and mast cells may participate in a complex multifactorial process.

    Science.gov (United States)

    Aroni, Kyriaki; Tsagroni, Eugenia; Kavantzas, Nikolaos; Patsouris, Efstratios; Ioannidis, Eleftherios

    2008-03-01

    In the present study we evaluated, in involved and clinically uninvolved skin of Rosacea, microvessels density (MVD) and total vascular area (TVA) in addition to multiple morphologic characteristics of microvessels and also mast cells (MCs) number. We examined also the relationship between angiogenesis, MCs number and disease clinicopathological data. The study included 69 patients with Rosacea. A skin biopsy with a 4-mm punch was performed from clinically involved skin in each case. In nine randomly selected patients, facial biopsy specimens were obtained from both involved and clinically uninvolved skin. Histological sections, immunostained for factor VIII, were evaluated by image analysis for the quantification of MVD, TVA and several morphometric parameters related to the vessel size or shape. MCs detection in the dermis was carried out using the chloracetate esterase method (Fast Blue RR) in parafin sections. Serum antibodies against H.pylori were detected. Statistically important differences concerning the factors of angiogenesis between lesional and clinically non-lesional skin were demonstrated. A statistical important correlation was found also between high vascular density, PPR clinical type and the presence of ocular manifestations. MVD or TVA showed no correlation with the degree of solar elastosis or inflammation and with the Demodex density as well. However, high MVD values were found to correlate with granuloma formation in the dermis. MCs number were significantly greater in lesional compared to clinically non-lesional skin. Statistical significance was shown between MCs density and disease duration. However, no correlation between MCs number and blood vessel density was found. Angiogenesis seems to play an important role in the pathogenesis especially of the more severe clinical form of Rosacea. MCs seem to participate in evolution to disease chronicity by contributing to inflammation, angiogenesis and tissue fibrosis.

  11. Evaluation of a novel very high sun-protection-factor moisturizer in adults with rosacea-prone sensitive skin

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    Grivet-Seyve M

    2017-06-01

    Full Text Available Mathieu Grivet-Seyve,1 Francine Santoro,2 Nadège Lachmann2 1Galderma Research and Development, Sophia Antipolis, France; 2Galderma Research and Development, Egerkingen, Switzerland Background/objective: Rosacea-prone sensitive skin requires high sun-protection factor (SPF moisturizers. This study evaluated Daylong Extreme SPF 50+ lotion, a novel cream containing five ultraviolet filters, two emollients, and three skin conditioners.Subjects and methods: This was an open-label, single-center study. On day 1, before treatment, subjects answered a questionnaire on their skin conditions and sunscreen habits, and both subjects and dermatologist evaluated skin status. Subjects applied the product once daily in the morning to the face for 21 days, and after approximately 3–5 minutes they assessed tolerability and short-term cosmetic acceptability in a questionnaire and daily diary. On day 22, the dermatologist and subjects evaluated skin status for long-term tolerance and cosmetic acceptability.Results: The study enrolled 44 individuals (mean age 58.8 years, 91% female. At baseline, most subjects (39 of 44 showed erythema, and ~30% showed dryness and scaling. Dermatologists noted four cases of pustules and one case of papules. After 21 days’ treatment with the product, the dermatologist reported significantly less erythema, dryness and scaling, three cases of pustules and two cases of papules. At baseline, ~75% of subjects noted a feeling of dryness, >50% reported tension, and nearly 25% reported tickling. After using the product for 21 days, subjects reported significantly less tension, dryness, and tickling. Some subjects noted itching and burning before and after using the product. One subject noted papules during treatment. Most subjects said that the product was pleasant, did not irritate the skin or cause stinging/burning, was easy to apply, quickly absorbed, and nongreasy, improved skin moisturization, helped prevent sun-provoked facial

  12. Impact of intense pulse light on quality of life in patients with erythematotelangiectatic rosacea

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    Mehdi Iskandarli

    2017-06-01

    Full Text Available Background and Design: It has been shown that acne rosacea (AR seriously affects quality of life (QoL. Various options are available for the treatment of AR. There are many studies in the literature demonstrating that QoL of patients have improved after these treatments. Positive outcomes have been attained with intense pulsed light (IPL in the treatment of AR and erythematotelangiectatic rosacea (ETR in particular. However, although there are studies in the literature showing the effectiveness of IPL in ETR, no studies have been conducted at either international or national level showing to what extent it has positive impact on QoL. Materials and Methods: Our goal in this study was to reveal to what extent IPL affects QoL positively. To this end, 30 patients who were diagnosed with ETR and met the inclusion criteria were included in the study. In this open-label, prospective, uncontrolled cohort study, visual analog scale (VAS, Physician’s Global Assessment (PGA, Dermatology Life Quality Index (DLQI and 36-Item Short Form Health Survey (SF-36 were administered before and after the IPL therapy, which was planned to be administered to the patients once in four weeks in a total of three sessions. Results: The data collected before the first session and after the last session were evaluated with the SPSS statistics software and statistically significant p values were obtained. The difference in VAS score between before and after treatment was -3.13±1.46 (p<0.01, -1.6±0.6 in PGA (p<0.01, and -11.63±3.13 in DLQI (p<0.01. The SF-36 was assessed in 8 subscales; physical functioning (PF, role-physical (RP, social functioning (SF, role-emotional (RE, bodily pain (BP, vitality (VT, mental health (MH, and general health (GH. The statistical analysis of the SF-36 showed that the difference was 35±16.24 in SF (p<0.01, 61±20 in RE (p<0.01, 8±16.9 in VT (p<0.05, 38±11.03 in MH (p<0.01, and 47.03±12.74 in GH (p<0.01. A comparison of the data obtained

  13. Characterization and Comparison of the CPK Gene Family in the Apple (Malus × domestica and Other Rosaceae Species and Its Response to Alternaria alternata Infection.

    Directory of Open Access Journals (Sweden)

    Menghan Wei

    Full Text Available As one of the Ca2+ sensors, calcium-dependent protein kinase (CPK plays vital roles in immune and stress signaling, growth and development, and hormone responses, etc. Recently, the whole genome of apple (Malus × domestica, pear (Pyrus communis, peach (Prunus persica, plum (Prunus mume and strawberry (Fragaria vesca in Rosaceae family has been fully sequenced. However, little is known about the CPK gene family in these Rosaceae species. In this study, 123 CPK genes were identified from five Rosaceae species, including 37 apple CPKs, 37 pear CPKs, 17 peach CPKs, 16 strawberry CPKs, and 16 plum CPKs. Based on the phylogenetic tree topology and structural characteristics, we divided the CPK gene family into 4 distinct subfamilies: Group I, II, III, and IV. Whole-genome duplication (WGD or segmental duplication played vital roles in the expansion of the CPK in these Rosaceae species. Most of segmental duplication pairs in peach and plum may have arisen from the γ triplication (~140 million years ago [MYA], while in apple genome, many duplicated genes may have been derived from a recent WGD (30~45 MYA. Purifying selection also played a critical role in the function evolution of CPK family genes. Expression of apple CPK genes in response to apple pathotype of Alternaria alternata was verified by analysis of quantitative real-time RT-PCR (qPCR. Expression data demonstrated that CPK genes in apple might have evolved independently in different biological contexts. The analysis of evolution history and expression profile laid a foundation for further examining the function and complexity of the CPK gene family in Rosaceae.

  14. Skin compatibility and efficacy of a cosmetic skin care regimen with licochalcone A and 4-t-butylcyclohexanol in patients with rosacea subtype I.

    Science.gov (United States)

    Schoelermann, A M; Weber, T M; Arrowitz, C; Rizer, R L; Qian, K; Babcock, M

    2016-02-01

    Patients with rosacea often show facial sensitivity to cosmetics or skin care products that can influence the severity of symptoms and exacerbate erythema and inflammation. Nevertheless, special skin care is necessary to address cosmetic concerns and reduce the potential side-effects of topical or oral treatment of the disease. Appropriate skin care should comprise gentle cleansing, effective moisturization, soothing actives, UV protection and concealing pigments to help neutralize the appearance of redness. To determine the compatibility and efficacy of a skin care regimen (consisting of a cleanser, a day care with SPF25 and a night care) containing licochalcone A (Lic A), an anti-irritant from the licorice plant Glycyrrhiza inflata, and 4-t-butylcyclohexanol (SymSitive(®) ), a substance which acts as a sensitivity regulator, in female subjects with clinically determined subtype I rosacea. Thirty-two test subjects with mild to moderate rosacea used the skin care regimen daily for 8 weeks. Clinical assessment of erythema, subjective irritation and clinical photography were performed at baseline and after 4 and 8 weeks. Additionally, a quality-of-life questionnaire was filled out by the test subjects at baseline and week 8. The subjects completed a self-assessment questionnaire on product properties after 4 and 8 weeks of product use. Clinical assessments and subject response confirmed very good tolerability of the regimen, a statistically significant improvement in clinical grading for erythema and tactile roughness at weeks 4 and 8 and on telangiectasia at week 8 when compared to baseline scores. A statistically significant improvement in facial redness (a*) values, based on the L*a*b* colorimetric system, was determined at week 4 and 8 in comparison to baseline. No difference in corneometric measurement was detected at week 4 and 8 compared to baseline. The skin care regimen was found to be highly compatible with the sensitive facial skin of patients with

  15. Tacrolimus-induced rosacea-like dermatitis: a clinical analysis of 16 cases associated with tacrolimus ointment application.

    Science.gov (United States)

    Teraki, Yuichi; Hitomi, Katsuhiro; Sato, Yoshihiro; Izaki, Seiichi

    2012-01-01

    Recently, reports have indicated that the continuous use of topical calcineurin inhibitors such as tacrolimus may induce rosacea-like dermatitis (RD). To assess clinical features of RD associated with tacrolimus, 44 cases of patients diagnosed with RD between 2005 and 2010 at our hospital were retrospectively reviewed. In total, 22 cases were caused by topical steroid use, 8 by topical tacrolimus use, and 8 by consecutive treatment with topical steroids and tacrolimus. Clinical presentation was basically similar among the 3 groups, although the nose was less frequently affected and pustules were rarely observed in the latter 2 sets of cases. Demodex mites were often found in smears of skin lesions from patients with RD caused by steroids and tacrolimus. Treatment with topical metronidazole was effective in most RD patients. Topical tacrolimus is becoming an important cause of RD along with topical steroids. Copyright © 2012 S. Karger AG, Basel.

  16. Isolation and recrystallization of epicuticular waxes from Sorbus and Cotoneaster leaves

    OpenAIRE

    Ganeva Tsveta; Stefanova Miroslava; Koleva Dimitrina; Ruiz Segundo Ríos

    2015-01-01

    Wax morphology and chemical composition are widely accepted to be important for the protective properties of the leaf’s surface and also valuable characteristics in plant systematics. The leaves of Sorbus domestica L. and Cotoneaster granatensis Boiss., species of two large genera with intricate taxonomy referred to subtribe Pyrinae, Rosaceae (formerly subfamily Maloideae), were studied by scanning electron microscope (SEM) and performing different methods of wax isola...

  17. Improvement in facial erythema within 30 minutes of initial application of brimonidine tartrate in patients with rosacea.

    Science.gov (United States)

    Jackson, J Mark; Fowler, Joseph; Moore, Angela; Jarratt, Michael; Jones, Terry; Meadows, Kappa; Steinhoff, Martin; Rudisill, Diane; Leoni, Matthew

    2014-06-01

    Brimonidine tartrate (BT) 0.5% gel demonstrated significantly greater efficacy versus vehicle gel once-daily for the treatment of moderate to severe erythema of rosacea. To assess the 30-minute speed of onset of topical BT 0.5% gel in reducing facial erythema in Phase III studies as measured by subject and clinician assessments of erythema. Two Phase III, randomized, controlled studies with identical design in which subjects with moderate erythema of rosacea (study A: n=260; study B: n=293) were randomized 1:1 to apply topical BT 0.5% or vehicle gel once-daily for 4 weeks. Evaluations included severity of erythema based on Clinician's Erythema Assessment (CEA) and Patient's Self-Assessment (PSA) prior to study drug application and at 30 minutes after application on days 1, 15, and 29. 97.7% and 96.6% of subjects reported normal study completion for studies A and B, respectively. The percentage of subjects achieving a 1-grade improvement in both CEA and PSA was significantly increased at 30 minutes post-dosing with BT 0.5% gel compared to vehicle gel on visit days (day 1: 27.9 vs 6.9%, P <0.001; day 15: 55.9 vs 21.1%, P <0.001; Day 29: 58.3 vs 32.0%, P <0.001 for BT 0.5% gel vs vehicle) in study A. Similar results were shown for study B. Once-daily topical BT gel 0.5% is not only efficacious at reducing facial erythema but also exhibits response within 30 minutes of application in a significant number of patients throughout both Phase III studies.

  18. The complete chloroplast genome sequence of an endemic monotypic genus Hagenia (Rosaceae: structural comparative analysis, gene content and microsatellite detection

    Directory of Open Access Journals (Sweden)

    Andrew W. Gichira

    2017-01-01

    Full Text Available Hagenia is an endangered monotypic genus endemic to the topical mountains of Africa. The only species, Hagenia abyssinica (Bruce J.F. Gmel, is an important medicinal plant producing bioactive compounds that have been traditionally used by African communities as a remedy for gastrointestinal ailments in both humans and animals. Complete chloroplast genomes have been applied in resolving phylogenetic relationships within plant families. We employed high-throughput sequencing technologies to determine the complete chloroplast genome sequence of H. abyssinica. The genome is a circular molecule of 154,961 base pairs (bp, with a pair of Inverted Repeats (IR 25,971 bp each, separated by two single copies; a large (LSC, 84,320 bp and a small single copy (SSC, 18,696. H. abyssinica’s chloroplast genome has a 37.1% GC content and encodes 112 unique genes, 78 of which code for proteins, 30 are tRNA genes and four are rRNA genes. A comparative analysis with twenty other species, sequenced to-date from the family Rosaceae, revealed similarities in structural organization, gene content and arrangement. The observed size differences are attributed to the contraction/expansion of the inverted repeats. The translational initiation factor gene (infA which had been previously reported in other chloroplast genomes was conspicuously missing in H. abyssinica. A total of 172 microsatellites and 49 large repeat sequences were detected in the chloroplast genome. A Maximum Likelihood analyses of 71 protein-coding genes placed Hagenia in Rosoideae. The availability of a complete chloroplast genome, the first in the Sanguisorbeae tribe, is beneficial for further molecular studies on taxonomic and phylogenomic resolution within the Rosaceae family.

  19. Anatomy of Brazilian Cereeae (subfamily Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger and Brasilicereus Backeberg Anatomia de espécies brasileiras pertencentes à tribo Cereeae (subfamília Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger and Brasilicereus Backeberg

    Directory of Open Access Journals (Sweden)

    Patricia Soffiatti

    2007-12-01

    Full Text Available (Anatomy of Brazilian Cereeae (subfamily Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger wâBrasilicereus Backeberg. Arrojadoa, Stephanocereus and Brasilicereus are endemic Brazilian Cereeae, occurring along the Espinhaço Range, in the campos rupestres, cerrados and caatingas, from northern Minas Gerais to southern Bahia. The genera are columnar, erect to semi-erect cacti, except for one species, A bahiensis, which is globose. This study describes the anatomy of dermal, fundamental and vascular systems, aiming to find diagnostic characters for the genera and species. Basal portions of stems were sectioned transversely and longitudinally, and stained with Astrablue and Safranin. The species share a uniseriate epidermis, with thick cuticle; well developed collenchymatic hypodermis, containing prismatic crystals; cortex with numerous mucilage cells, druses and vascular bundles; outside cortex as a palisade parenchyma; periderm composed of lignified cork cells alternating with suberized cells; pheloderm consisting of a few layers of thin-walled cells; phloem composed of solitary or multiple of two to three sieve tube elements, companion cells, axial and radial parenchyma; secondary xylem with solitary to multiple vessels, with simple perforation plates and alternate bordered to semi-bordered pits; axial parenchyma scanty vasicentric to incomplete; libriform septate fibres; large rays. Unlignified parenchyma is seen in the secondary xylem, varying from a few cells to bands among axial and radial elements. The following are considered diagnostic characters: the shape of lignified phellem cells, cubic to radially elongate, which individualizes S. leucostele; an underdeveloped hypodermis and the occurrence of sclereids in the cortex are exclusive to Brasilicereus markgrqfii.(Anatomia de espécies brasileiras pertencentes à tribo Cereeae (subfamília Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger and

  20. Comparison and interpretation of the dermatological health-related quality of life and SKINDEX-29 in patients with different subtypes of rosacea

    Directory of Open Access Journals (Sweden)

    Davydova A.M.

    2015-09-01

    Full Text Available Aim: comparison and interpretation of dermatological health-related quality of life (HRQoL and SKINDEX-29 in patients with different subtypes of rosacea. Materials and methods. Questionnaires HRQoL and SKINDEX-29 (which is very slightly described and categorized in Russian literature were used to question 48 patients with rosacea of 3 subtypes (the 1st, the 2nd and the 3rd. The data resulting from the study were processed statistically and tabulated. Results. Sensitivity and interchangeability SKINDEKS-29 and HRQoL were confirmed for patients with different subtypes of rosacea. A more detailed description and interpretation of SKINDEX-29 will increase the understanding of the scores obtained in patients with any dermatological pathology. The use of two questionnaires, investigating the quality of life, increases the control of psychosocial examination and the most narrowly figures details. Conclusions. Conversion of abstract SKINDEX-29 points and its clear categorization into clinically significant quantities will help to form, manage and to unite, if necessary, groups of patients, depending on the parameters of emotional, physical symptoms and psychological functioning for partnerships in the "doctor— patient" system.

  1. Pericarp structure of the Caryopteris group (Lamiaceae subfam. Ajugoideae)

    DEFF Research Database (Denmark)

    Ryding, Per Olof

    2009-01-01

    Pericarp and seed structure was investigated in 13 out of the 16 species of the old Caryopteris s.lat. and in a few species of  the related Rubiteucris, Amethystea, Trichostema and Ajuga. The pericarp structure was found to be very variable, and the variation largely matches the most recent...

  2. Long-term safety and efficacy of once-daily topical brimonidine tartrate gel 0.5% for the treatment of moderate to severe facial erythema of rosacea: results of a 1-year open-label study.

    Science.gov (United States)

    Moore, Angela; Kempers, Steven; Murakawa, George; Weiss, Jonathan; Tauscher, Amanda; Swinyer, Leonard; Liu, Hong; Leoni, Matthew

    2014-01-01

    Once-daily topical brimonidine tartrate (BT) gel 0.5% was shown to be efficacious and safe for the treatment of erythema of rosacea in previous studies including a 4-week treatment phase. In the present 1-year study, we aimed to assess the long-term safety and efficacy of the treatment. Subjects with moderate to severe erythema of rosacea were instructed to apply topical BT gel 0.5% once daily for 12 months. Severity of erythema and adverse events (AEs) were evaluated. Approximately 345 subject years of exposure to BT gel 0.5% was achieved in the study. The incidence of AEs and AEs judged to be related to the study drug was higher at the beginning and decreased over the course of the study. Similar safety profiles were observed between the subjects who had received or not received concomitant therapies for the inflammatory lesions of rosacea. Effect of topical BT gel 0.5% on erythema severity was observed after the first application and the durability of the effect was maintained until the end of the study at month 12, with no tachyphylaxis observed. In conclusion, once-daily topical BT gel 0.5% is safe and consistently effective for the long-term treatment of moderate to severe erythema of rosacea, even in the presence of concomitant therapies for the inflammatory lesions of rosacea.

  3. An inbred line of the diploid strawberry Fragaria vesca f. semperflorens for genomic and molecular genetic studies in the Rosaceae

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    Folta Kevin M

    2009-10-01

    Full Text Available Abstract Background The diploid woodland strawberry (Fragaria vesca is an attractive system for functional genomics studies. Its small stature, fast regeneration time, efficient transformability and small genome size, together with substantial EST and genomic sequence resources make it an ideal reference plant for Fragaria and other herbaceous perennials. Most importantly, this species shares gene sequence similarity and genomic microcolinearity with other members of the Rosaceae family, including large-statured tree crops (such as apple, peach and cherry, and brambles and roses as well as with the cultivated octoploid strawberry, F. ×ananassa. F. vesca may be used to quickly address questions of gene function relevant to these valuable crop species. Although some F. vesca lines have been shown to be substantially homozygous, in our hands plants in purportedly homozygous populations exhibited a range of morphological and physiological variation, confounding phenotypic analyses. We also found the genotype of a named variety, thought to be well-characterized and even sold commercially, to be in question. An easy to grow, standardized, inbred diploid Fragaria line with documented genotype that is available to all members of the research community will facilitate comparison of results among laboratories and provide the research community with a necessary tool for functionally testing the large amount of sequence data that will soon be available for peach, apple, and strawberry. Results A highly inbred line, YW5AF7, of a diploid strawberry Fragaria vesca f. semperflorens line called "Yellow Wonder" (Y2 was developed and examined. Botanical descriptors were assessed for morphological characterization of this genotype. The plant line was found to be rapidly transformable using established techniques and media formulations. Conclusion The development of the documented YW5AF7 line provides an important tool for Rosaceae functional genomic analyses

  4. No evidence for Fabaceae Gametophytic self-incompatibility being determined by Rosaceae, Solanaceae, and Plantaginaceae S-RNase lineage genes.

    Science.gov (United States)

    Aguiar, Bruno; Vieira, Jorge; Cunha, Ana E; Vieira, Cristina P

    2015-06-02

    Fabaceae species are important in agronomy and livestock nourishment. They have a long breeding history, and most cultivars have lost self-incompatibility (SI), a genetic barrier to self-fertilization. Nevertheless, to improve legume crop breeding, crosses with wild SI relatives of the cultivated varieties are often performed. Therefore, it is fundamental to characterize Fabaceae SI system(s). We address the hypothesis of Fabaceae gametophytic (G)SI being RNase based, by recruiting the same S-RNase lineage gene of Rosaceae, Solanaceae or Plantaginaceae SI species. We first identify SSK1 like genes (described only in species having RNase based GSI), in the Trifolium pratense, Medicago truncatula, Cicer arietinum, Glycine max, and Lupinus angustifolius genomes. Then, we characterize the S-lineage T2-RNase genes in these genomes. In T. pratense, M. truncatula, and C. arietinum we identify S-RNase lineage genes that in phylogenetic analyses cluster with Pyrinae S-RNases. In M. truncatula and C. arietinum genomes, where large scaffolds are available, these sequences are surrounded by F-box genes that in phylogenetic analyses also cluster with S-pollen genes. In T. pratense the S-RNase lineage genes show, however, expression in tissues not involved in GSI. Moreover, levels of diversity are lower than those observed for other S-RNase genes. The M. truncatula and C. arietinum S-RNase and S-pollen like genes phylogenetically related to Pyrinae S-genes, are also expressed in tissues other than those involved in GSI. To address if other T2-RNases could be determining Fabaceae GSI, here we obtained a style with stigma transcriptome of Cytisus striatus, a species that shows significant difference on the percentage of pollen growth in self and cross-pollinations. Expression and polymorphism analyses of the C. striatus S-RNase like genes revealed that none of these genes, is the S-pistil gene. We find no evidence for Fabaceae GSI being determined by Rosaceae, Solanaceae, and

  5. Bilateral Morganella Morganii keratitis in a patient with facial topical corticosteroid-induced rosacea-like dermatitis: a case report.

    Science.gov (United States)

    Zhang, Bei; Pan, Fei; Zhu, Kejian

    2017-06-28

    Bilateral keratitis rarely occurs in individuals without predisposing factors. Here we describe the clinical course of a patient who developed a bilateral keratitis caused by Morganella. morganii which might be associated with long term using of topical corticosteroids-containing preparations on the face. A 52-year-old female patient presented with marked bilateral corneal infiltration and hypopyon without any usual predisposing factors for bilateral infectious keratitis. There was diffuse erythema with itching on face before the onset of eye discomforts. Microbiological culture of materials from both corneas revealed significant growth of Morganella morganii. Topical corticosteroid-induced rosacea-like dermatitis was diagnosed by dermatologist because of the characteristic eruptions and long history of using the corticosteroids-containing cosmetic creams on her face. The corneal ulcers responded well to levofloxacin eye drops and ofloxacin ointment and healed with opacity and neovascularization. This case illustrates that bilateral bacterial corneal infection can develop in patients with long term using of topical corticosteroids-containing preparations on the face. To our knowledge, this is the first case of bilateral keratitis caused by Morganella morganii.

  6. Rubus imperialis (Rosaceae) extract and pure compound niga-ichigoside F1: wound healing and anti-inflammatory effects.

    Science.gov (United States)

    Tonin, Talita Dacroce; Thiesen, Liliani Carolini; de Oliveira Nunes, Maria Luisa; Broering, Milena Fronza; Donato, Marcos Paulo; Goss, Marina Jagielski; Petreanu, Marcel; Niero, Rivaldo; Machado, Isabel Daufenback; Santin, José Roberto

    2016-11-01

    Here, we evaluate the anti-inflammatory and wound-healing effects of methanolic crude extract obtained from aerial parts (leaves and branches) of Rubus imperialis Chum. Schl. (Rosaceae) and the pure compound niga-ichigoside F1. Anti-inflammatory activity was determined in vivo and in vitro, and the healing effect was evaluated in surgical lesions in mice skin. The 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) assay and H2O2-induced oxidative stress were used to determine antioxidant activity. The efferocytosis activity was also determined. The data obtained show that the extract of R. imperialis promote reduction in the inflammatory process induced by lipopolysaccharide (LPS) or carrageenan in the air pouch model; the effects could be reinforced by nitric oxide reduction in LPS-stimulated neutrophils, and an increase in the efferocytosis. The extract showed wound healing property in vitro and in vivo, scavenging activity for DPPH, and cytoprotection in the H2O2-induced oxidative stress in L929 cells. In addition, the compound niga-ichigoside F1 was able to reduce the NO secretion; however, it did not present wound-healing activity in vitro. Together, the data obtained point out the modulatory actions of R. imperialis extract on leukocyte migration to the inflamed tissue, the antioxidant, and the pro-resolutive activity. However, the R. imperialis anti-inflammatory activity may be mediated in parts by niga-ichigoside F1, and on wound healing do not correlated with niga-ichigoside F1.

  7. Characterization of resistance gene analogues (RGAs in apple (Malus × domestica Borkh. and their evolutionary history of the Rosaceae family.

    Directory of Open Access Journals (Sweden)

    Michele Perazzolli

    Full Text Available The family of resistance gene analogues (RGAs with a nucleotide-binding site (NBS domain accounts for the largest number of disease resistance genes and is one of the largest gene families in plants. We have identified 868 RGAs in the genome of the apple (Malus × domestica Borkh. cultivar 'Golden Delicious'. This represents 1.51% of the total number of predicted genes for this cultivar. Several evolutionary features are pronounced in M. domestica, including a high fraction (80% of RGAs occurring in clusters. This suggests frequent tandem duplication and ectopic translocation events. Of the identified RGAs, 56% are located preferentially on six chromosomes (Chr 2, 7, 8, 10, 11, and 15, and 25% are located on Chr 2. TIR-NBS and non-TIR-NBS classes of RGAs are primarily exclusive of different chromosomes, and 99% of non-TIR-NBS RGAs are located on Chr 11. A phylogenetic reconstruction was conducted to study the evolution of RGAs in the Rosaceae family. More than 1400 RGAs were identified in six species based on their NBS domain, and a neighbor-joining analysis was used to reconstruct the phylogenetic relationships among the protein sequences. Specific phylogenetic clades were found for RGAs of Malus, Fragaria, and Rosa, indicating genus-specific evolution of resistance genes. However, strikingly similar RGAs were shared in Malus, Pyrus, and Prunus, indicating high conservation of specific RGAs and suggesting a monophyletic origin of these three genera.

  8. Characterization of resistance gene analogues (RGAs) in apple (Malus × domestica Borkh.) and their evolutionary history of the Rosaceae family.

    Science.gov (United States)

    Perazzolli, Michele; Malacarne, Giulia; Baldo, Angela; Righetti, Laura; Bailey, Aubrey; Fontana, Paolo; Velasco, Riccardo; Malnoy, Mickael

    2014-01-01

    The family of resistance gene analogues (RGAs) with a nucleotide-binding site (NBS) domain accounts for the largest number of disease resistance genes and is one of the largest gene families in plants. We have identified 868 RGAs in the genome of the apple (Malus × domestica Borkh.) cultivar 'Golden Delicious'. This represents 1.51% of the total number of predicted genes for this cultivar. Several evolutionary features are pronounced in M. domestica, including a high fraction (80%) of RGAs occurring in clusters. This suggests frequent tandem duplication and ectopic translocation events. Of the identified RGAs, 56% are located preferentially on six chromosomes (Chr 2, 7, 8, 10, 11, and 15), and 25% are located on Chr 2. TIR-NBS and non-TIR-NBS classes of RGAs are primarily exclusive of different chromosomes, and 99% of non-TIR-NBS RGAs are located on Chr 11. A phylogenetic reconstruction was conducted to study the evolution of RGAs in the Rosaceae family. More than 1400 RGAs were identified in six species based on their NBS domain, and a neighbor-joining analysis was used to reconstruct the phylogenetic relationships among the protein sequences. Specific phylogenetic clades were found for RGAs of Malus, Fragaria, and Rosa, indicating genus-specific evolution of resistance genes. However, strikingly similar RGAs were shared in Malus, Pyrus, and Prunus, indicating high conservation of specific RGAs and suggesting a monophyletic origin of these three genera.

  9. Monoterpenoids from the traditional North Italian vegetable Aruncus dioicus (Walter) Fernald var. vulgaris (Maxim.) H.Hara (Rosaceae).

    Science.gov (United States)

    Granica, Sebastian; Fusani, Pietro; Stanisławska, Iwona; Piwowarski, Jakub P; Melck, Dominique; Motta, Andrea; Zidorn, Christian

    2017-04-15

    Investigations of young shoots of Aruncus dioicus (Walter) Fernald var. vulgaris (Maxim.) H.Hara (Rosaceae), collected from the wild and used as vegetables in alpine provinces of Italy, yielded eight monoterpenoids. Besides known compounds, aruncin A, aruncide A, and cimicifugolide, five previously undescribed substances, aruncins C, D, and E, and aruncides D and E, were identified. Based on results from the full synthesis of aruncin B, structures of aruncin A and aruncide A were revised. Structures were established by HR mass spectrometry and extensive 1D and 2D NMR spectroscopy and based on data from synthetic aruncin B. An HPLC-DAD-ESI-MS method was developed to investigate the distribution of the monoterpenoids in different organs of Aruncus dioicus var. vulgaris and in aerial parts of A. dioicus var. aethusifolius (H.Lév.) H.Hara [Syn.: Aruncus aethusifolius (H.Lév.) Nakai]. Preliminary bioactivity studies moreover indicated weak cytotoxicity for some of the compounds against human prostrate adenocarcinoma cells. Copyright © 2016 Elsevier Ltd. All rights reserved.

  10. Bud structure, position and fate generate various branching patterns along shoots of closely related Rosaceae species: a review

    Science.gov (United States)

    Costes, Evelyne; Crespel, Laurent; Denoyes, Béatrice; Morel, Philippe; Demene, Marie-Noëlle; Lauri, Pierre-Eric; Wenden, Bénédicte

    2014-01-01

    Branching in temperate plants is closely linked to bud fates, either floral or vegetative. Here, we review how the fate of meristematic tissues contained in buds and their position along a shoot imprint specific branching patterns which differ among species. Through examples chosen in closely related species in different genera of the Rosaceae family, a panorama of patterns is apparent. Patterns depend on whether vegetative and floral buds are borne individually or together in mixed buds, develop as the shoot grows or after a rest period, and are located in axillary or terminal positions along the parent shoot. The resulting branching patterns are conserved among varieties in a given species but progressively change with the parent shoot length during plant ontogeny. They can also be modulated by agronomic and environmental conditions. The existence of various organizations in the topology and fate of meristematic tissues and their appendages in closely related species questions the between-species conservation of physiological and molecular mechanisms leading to bud outgrowth vs. quiescence and to floral induction vs. vegetative development. PMID:25520729

  11. Permethrin 5% cream versus metronidazole 0.75% gel for the treatment of papulopustular rosacea. A randomized double-blind placebo-controlled study.

    Science.gov (United States)

    Koçak, Mukadder; Yağli, Salime; Vahapoğlu, Güler; Ekşioğlu, Meral

    2002-01-01

    Permethrin 5% cream used against human ectoparasites suggests that it may be effective in papulopustular rosacea. This study included 63 patients diagnosed as having papulopustular rosacea based on the clinical and histological findings. Patients were randomly assigned into permethrin (n = 23), metronidazole (n = 20) and placebo (n = 20) groups. Scores of erythema, telangiectasia, edema and rhinophyma and the numbers of papules, pustules, inflammatory nodules and Demodex folliculorum were determined. Twenty-three patients were given permethrin 5% cream (Zalvor 5% skin cream, 20 patients metronidazole 0.75% gel (Roza gel and 20 patients placebo cream (Basis cream, in packages looking identical to those of metronidazole and permethrin creams, and were recommended to apply them to their faces twice a day. All patients were also given SPF 20 cream for protection against sunlight. Two months of treatment were planned, and the patients were invited to the clinic for fortnightly controls. Scores of erythema, telangiectasia, edema and rhinophyma and the numbers of papules, pustules, inflammatory nodules and D. folliculorum were recorded at each visit. The mean scores of erythema and the mean numbers of papules, pustules and D. folliculorum were determined at baseline and on days 15, 30, 45 and 60. Side effects were also detected. The effect of permethrin 5% cream on D. folliculorum was superior to that of metronidazole 0.75% gel. The effect of permethrin 5% cream on erythema and papules was found to be more effective than placebo and as effective as metronidazole 0.75% gel. However, it had no effect on telangiectasia, rhinophyma and pustules. It can be concluded that the application of permethrin 5% cream twice daily for 2 months can be as effective and reliable as metronidazole in the treatment of rosacea and a greater benefit can be gained when it is combined with other systemic and/or topical treatments. Copyright 2002 S. Karger AG, Basel

  12. Efectos del fuego sobre un bosquecillo de Polylepis australis (Rosaceae en las montañas de Córdoba, Argentina Effects of fire on a Polylepis australis (Rosaceae woodland in the mountains of Córdoba, Argentina

    Directory of Open Access Journals (Sweden)

    DANIEL RENISON

    2002-12-01

    Full Text Available El fuego es usado para transformar bosques en pastizales y estimular el rebrote de los pastos para aumentar su valor forrajero. Según algunos autores, este uso del fuego ha provocado una retracción de los bosques de Polylepis a sitios rocosos inaccesibles al fuego, mientras que otros autores postulan que su distribución es debida al ambiente favorable en las rocas y no a la acción del fuego. Aquí evaluamos el efecto relativo del fuego y el ambiente sobre la supervivencia, producción de semillas y crecimiento de Polylepis australis Bitter (Rosaceae en un bosquecillo de las montañas de C��rdoba. Realizamos un seguimiento de 74 individuos quemados y controles durante 3,5 años. La presencia de rocas tuvo una fuerte influencia en el porcentaje en que se quemaron los individuos. A su vez, el porcentaje en que se quemaron se relacionó negativamente con la supervivencia, producción de semillas y el crecimiento en altura. La producción de biomasa fue mayor cuando se quemaron en un porcentaje intermedio. Exceptuando la protección al fuego, la roca no tuvo ningún efecto positivo sobre las variables medidas. Estos resultados sugieren que la distribución actual de P. australis es al menos en parte debida al fuego. Para su conservación sugerimos minimizar los fuegos, desarrollar actividades con alto riesgo de incendio en sitios con alta proporción de roca y, si es posible, proteger los ejemplares expuestos al fuego con piedras.Fire is used to transform woodlands into grasslands and to promote the regrowth of grasses to increase their forage value. According to some authors, this use of fire has caused a retraction of Polylepis woodlands to rock outcrops inaccessible to fire, while other authors postulate that their distribution is due to the favorable environment they find on rocks and not due to the influence of fire. We evaluated the relative effects of fire and environment on survival, seed production and growth of Polylepis australis

  13. Efecto del fotoperiodo y la temperatura sobre la composición bioquímica en reproductores silvestres de cabrilla sardinera, Mycteroperca rosacea (Streets, 1877)

    OpenAIRE

    José Antonio Estrada-Godínez; Minerva Maldonado-García; Vicente Gracia-López; Manuel Carrillo; René Rebollar-Prudente; Milton Spanopoulos-Zarco

    2014-01-01

    Se estimó el factor de condición (K), el índice gonadosomático (IGS), hepatosomático (IHS) y de grasa visceral (IGV), así como la composición bioquímica en diferentes tejidos de reproductores silvestres de cabrilla sardinera, Mycteroperca rosacea, para evaluarlos a lo largo de un ciclo reproductivo y ver la relación que presentan los cambios con respecto a la temperatura del agua y fotoperiodo de la zona de muestreo. Se capturaron 187 reproductores, 146 hembras y 41 machos en el golfo de Cali...

  14. Estudo botânico, fitoquímico e avaliação da atividade antimicrobiana de Rubus rosaefolius Sm. - Rosaceae

    Directory of Open Access Journals (Sweden)

    Claudia Mauro

    Full Text Available Rubus rosaefolius Sm., Rosaceae, is a shrub with compound leaves, recurvate prickles, white flowers and aggregate fruit, popularly known as sylvan strawberry. The present research concerns its botany (macroscopic and microscopic studies, phytochemistry and antimicrobial properties. The presence of antraquinones, saponins, flavonoids, alkaloids and tannins on stem, root and leaves, were confirmed by specific phytochemical tests. Antimicrobial activity of aqueous and hydroalchoolic fractions were tested against E. coli, S. aureus, P. aeruginosa and C. albicans. The hydroalchoolic fraction revealed antimicrobial activity against all species tested and the aqueous fraction inhibited the growth of S. aureus and C. albicans.

  15. Comparison of the Prevalences of Demodex folliculorum in Rosacea and Seborrhoeic Dermatitis with Standardized Skin Surface Biopsy

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    B Tas

    2015-09-01

    Full Text Available Objective: Rosacea (RSC and seborrhoeic dermatitis (SD are inflammatory dermatological conditions which are located in sebaceous gland-rich areas. Demodex folliculorum (D folliculorum is the most common ectoparasite in humans that may play a role in the aetiopathogenesis of both diseases. The aims of this study were to compare the prevalences of D folliculorum positivity in patients with RSC and SD; compare the positivity in both diseases according to different age ranges and gender and compare mite positivity according to clinical types of RSC. Methods: A total of 200 facial skin biopsies, one from each patient clinically diagnosed as RSC (100 patients and as SD (100 patients were studied between February 2011 and August 2013. D folliculorum density was investigated using standardized skin surface biopsy and the specimens were examined under light microscope. Quantitative data were tested withPearson’s Chi-squared test and Fisher’s exact test,andsignificance was defined as a p-value of < 0.05. Results: Demodex mite was positive in 51 (25.50% of the 200 patients (74.51% of them had RSC, and 25.49% had SD; p = 0.0001. No statistical differences were detected between the prevalences of Demodex positivity in patients with RSC in terms of gender (p = 0.768 and age (p = 0.193. In the SD group, there was no statistical difference in mite positivity in terms of gender (p = 0.138, while the positivity was significantly higher in the age group 45 years and over (p = 0.039. In different clinical types of RSC, there was no significant difference with respect to mite positivity (p = 0.168. Conclusion: Positivity of D folliculorum was significantly higher in RSC when compared to SD. Our results suggest that D folliculorum mite can play a more important role in the aetiopathogenesis of RSC than SD.

  16. Efficacy and safety of once-daily topical brimonidine tartrate gel 0.5% for the treatment of moderate to severe facial erythema of rosacea: results of two randomized, double-blind, and vehicle-controlled pivotal studies.

    Science.gov (United States)

    Fowler, Joseph; Jackson, Mark; Moore, Angela; Jarratt, Michael; Jones, Terry; Meadows, Kappa; Steinhoff, Martin; Rudisill, Diane; Leoni, Matthew

    2013-06-01

    Brimonidine tartrate, a highly selective α2-adrenergic receptor agonist with potent vasoconstrictive activity, was shown to reduce erythema of rosacea. To assess the efficacy and safety of topical brimonidine tartrate gel 0.5% for the treatment of erythema of rosacea. Both studies were randomized, double-blind, and vehicle-controlled, with identical design. Subjects with moderate to severe erythema of rosacea were randomized 1:1 to apply topical brimonidine tartrate gel 0.5% or vehicle gel once-daily for 4 weeks, followed by a 4-week follow-up phase. Evaluations included severity of erythema based on Clinician's Erythema Assessment and Patient's Self-Assessment, as well as adverse events. Topical brimonidine tartrate gel 0.5% was significantly more efficacious than vehicle gel throughout 12 hours on days 1, 15, and 29, with significant difference observed as early as 30 minutes after the first application on day 1 (all Pbrimonidine tartrate gel 0.5% than for vehicle; however, most of the adverse events were dermatological, mild, and transient in nature. These data generated in controlled trials may be different from those in clinical practice. Once-daily brimonidine tartrate gel 0.5% has a good safety profile and provides significantly greater efficacy relative to vehicle gel for the treatment of moderate to severe erythema of rosacea, as early as 30 minutes after application.

  17. Occurrence of Oncideres dejeanii Thomson (Cerambycidae in Pyrus pyrifolia (Rosaceae, in Minas Gerais, Brazil Ocorrência de Oncideres dejeanii Thomson (Cerambycidae em Pyrus pyrifolia (Rosaceae, em Minas Gerais

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    Gláucia Cordeiro

    2010-10-01

    Full Text Available

    The twig girdler beetles are known for damaging many tree species. These beetles girdle branches and use them to lay their eggs and complete the offspring development. The objective of this work was to describe the occurrence of a case of O. dejeanii girdling Pyrus pyrifolia (pear tree branches. Three girdled branches of P. pyrifolia were collected and on two of these were captured a female of this twig-girdler beetle on each. The diameter and average length of the branches were 3.47±0.15 cm and 3.31±0.17 m, respectively. The lower third of the girdled branch has presented 52% of the posture incisions. A female was observed performing two postures along the branch, which took 10 and 13 minutes. O. dejeanii uses P. pyrifolia as alternative host, with potential to become pest and reduce output.

     

    doi: 10.4336/2010.pfb.30.62.153

    Os besouros serradores são conhecidos por causarem danos em várias espécies arbóreas. Estes besouros
    roletam galhos e os utilizam para ovipositar e completar o desenvolvimento de sua prole. O objetivo deste trabalho foi descrever a ocorrência de um caso de O. dejeanii Thomson, 1868 (Coleoptera:  Cerambycidae em Pyrus pyrifolia (Burm F. Nakai. (Rosaceae (pereira, visando caracterizar suas injúrias  e verificar a possibilidade de desenvolvimento neste vegetal. A pereira se encontrava em um pomar, no  município de Viçosa, MG. Foram recolhidos três galhos roletados de uma pereira, sendo que em dois destes foi coletada uma fêmea em cada. O diâmetro e  comprimento médio dos galhos foram de 3,47±0,15 cm e 3,31±0,17 m, respectivamente. O terço inferior do galho roletado apresentou 52% das incisões de posturas. Foi observada uma fêmea efetuando duas posturas ao longo do galho e registrado o tempo de 10 min e 13 min, respectivamente. O. dejeanii utiliza P.
    pyrifolia como hospedeiro alternativo, apresentando potencial para se tornar praga e reduzir a produção.

    doi: 10

  18. Uso da capilaroscopia ungueal como método diagnóstico e prognóstico de rosácea Nailfold capillaroscopy as a diagnostic and prognostic method in rosacea

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    Gabriela Poglia Fonseca

    2011-02-01

    Full Text Available FUNDAMENTOS: Não há um método adequado e fidedigno de avaliação e seguimento da severidade na rosácea. OBJETIVO: Determinar a importância da capilaroscopia periungueal como método diagnóstico e prognóstico em pacientes portadores de rosácea. MÉTODOS: Estudo transversal onde foram submetidos ao exame da capilaroscopia periungueal 8 pacientes com rosácea e 8 controles no período entre maio e julho de 2009. Foram coletados dados clínicos relacionados ao sexo, idade, fototipo, classificação da rosácea de acordo com a classificação de Plewig e Kligman e a classificação da National Rosacea Society. Adicionalmente, avaliamos o tempo de evolução da doença e tratamentos previamente utilizados. RESULTADOS: A grande maioria das pacientes avaliadas (6 das 8 pacientes apresentavam rosácea grau I (vascular ou eritêmato-teleangiectásica. A idade média de duração da rosácea foi de 5,96 anos, sendo que 87,5% faziam tratamento com metronidazol tópico. Nenhum paciente tanto do grupo rosácea como controle demonstrou evidência de desvascularização ao exame capilaroscópico. CONCLUSÃO: A capilaroscopia periungueal apresenta um padrão inespecífico e não parece auxiliar no diagnóstico ou prognóstico da rosácea.BACKGROUND: There is no appropriate and reliable method of evaluating and monitoring severity in rosacea. OBJECTIVE: To determine the importance of nailfold capillaroscopy as a diagnostic and prognostic method for patients with rosacea. METHODS: A cross-sectional study where eight patients with rosacea and 8 control subjects were submitted to nailfold capillaroscopy from May to July 2009. We collected clinical data related to gender, age, skin phototype, and rosacea stage according to Plewig and Kligman classification and the classification of the National Rosacea Society. Additionally, we evaluated the progression of the disease and treatment therapies previously used. RESULTS: The majority of the patients evaluated (6

  19. POLEN DE LAS MAGNOLIOPSIDA EN EL VOLCÁN (PAMPLONA, COLOMBIA II: FAMILIAS HYPERICACEAE, LAMIACEAE, LOBELIACEAE, POLYGONACEAE, RHAMNACEAE, ROSACEAE, RUBIACEAE, SCROPHULARIACEAE Y SOLANACEAE

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    JORGE D. MERCADO-GÓMEZ

    2013-12-01

    Full Text Available Se caracterizó la morfología polínica de las especies pertenecientes a las familias, Hypericaceae, Lamiaceae, Lobeliaceae, Polygonaceae, Rhamnaceae, Rosaceae, Rubiaceae, Scrophulariaceae y Solanaceae, encontradas en la zona El Volcán (Pamplona, Colombia. Las observaciones, descripciones y microfotografías de los granos de polen se realizaron con microscopio de luz, contando un mínimo de 25 granos por especie. Todas las familias presentan un carácter euripalinologico, excepto Melastomataceae la cual es estenopalinologica. Asimismo, al realizar comparaciones sobre algunas especies que fueron descritas en otras zonas del bosque altoandino y páramo en la cordillera Central y Occidental, fue posible determinar variaciones en la morfología polínica.

  20. Brimonidine gel 0.33% rapidly improves patient-reported outcomes by controlling facial erythema of rosacea: a randomized, double-blind, vehicle-controlled study.

    Science.gov (United States)

    Layton, A M; Schaller, M; Homey, B; Hofmann, M A; Bewley, A P; Lehmann, P; Nohlgård, C; Sarwer, D B; Kerrouche, N; Ma, Y M

    2015-12-01

    Facial redness contributes to impaired psychosocial functioning in rosacea patients and the only approved treatment for erythema is topical brimonidine gel 0.33%. To evaluate patient-reported outcomes, as well as efficacy and safety, in subjects with self-perceived severe erythema treated with brimonidine gel 0.33% compared to vehicle. An 8-day multicenter, randomized study comparing once-daily brimonidine gel 0.33% with vehicle gel using a facial redness questionnaire, subject satisfaction questionnaire and a patient diary of facial redness control to assess patient-reported outcomes. Of the 92 included subjects with self-perceived severe erythema, very few were satisfied with their appearance at baseline (4.2% brimonidine group, 0 vehicle group). On Day 8, significantly more brimonidine group subjects were satisfied with their facial appearance compared to vehicle group (36.9% vs. 21.5%; P brimonidine group subjects were able to control their facial redness daily (e.g. 83.0% vs. 38.9% on Day 1). On Day 8, significantly more brimonidine group subjects than vehicle group had at least a one-grade improvement from baseline in the Clinician Erythema Assessment score (71.7% vs. 35.7%; P = 0.0011) and Patient Self-Assessment score (76.1% vs. 47.6%; P = 0.004). More subjects in the brimonidine group (29.2%) reported treatment-related adverse events than in the vehicle group (15.9%) but most were mild and transient. Once-daily brimonidine gel 0.33% allowed patients to rapidly control their facial redness and significantly improved patient-reported outcomes in the treatment of persistent facial erythema of rosacea. © 2015 The Authors. Journal of the European Academy of Dermatology and Venereology published by John Wiley & Sons Ltd on behalf of European Academy of Dermatology and Venereology.

  1. Treatment of facial erythema in patients with rosacea with topical brimonidine tartrate: correlation of patient satisfaction with standard clinical endpoints of improvement of facial erythema.

    Science.gov (United States)

    Fowler, J; Tan, J; Jackson, J M; Meadows, K; Jones, T; Jarratt, M; Leoni, M

    2015-03-01

    Once-daily brimonidine tartrate (BT) 0.5% gel was shown to provide significantly greater efficacy vs. vehicle for the treatment of facial erythema in patients with rosacea. To demonstrate that patient satisfaction with overall appearance is correlated with reduction in facial erythema, as measured by clinician and patient assessments. Data from two identical phase III, multicentre, randomized, controlled trials of moderate facial erythema of rosacea (study A: n = 260; study B: n = 293) with topical BT 0.5% compared to vehicle gel once-daily for 4 weeks were analysed. Correlations of Patient's Assessment of Appearance (PAA) with Clinician's Erythema Assessment (CEA) and Patient's Self-Assessment (PSA) of erythema were evaluated by calculation of gamma statistics. PAA correlated with CEA post-application on Days 1, 15 and 29 for the intent-to-treat population and provided a median gamma value of 0.57 (min = 0.28, max = 0.61). PAA and PSA was also highly correlated post-application on Days 1, 15 and 29; with a median gamma value of 0.87 (min = 0.66, max = 0.89). Subjects who achieved a clinically meaningful improvement in both CEA and PSA scales were more likely to report satisfaction with the overall appearance of their skin (P < 0.001). Both one- and two-grade improvements in facial erythema assessed by subjects (PSA) and clinicians (CEA) correlate well with PAA, a patient-centered representation of meaningful change. © 2014 European Academy of Dermatology and Venereology.

  2. Demodex-associated Bacillus proteins induce an aberrant wound healing response in a corneal epithelial cell line: possible implications for corneal ulcer formation in ocular rosacea.

    Science.gov (United States)

    O'Reilly, Niamh; Gallagher, Clair; Reddy Katikireddy, Kishore; Clynes, Martin; O'Sullivan, Finbarr; Kavanagh, Kevin

    2012-05-31

    The aim of the work presented here was to establish the response of a corneal epithelial cell line (hTCEpi) to protein extracted from a bacterium (Bacillus oleronius) previously isolated from a Demodex mite from a rosacea patient. The response of the corneal epithelial cell line to Bacillus proteins was measured in terms of alterations in cell migration and invasiveness. Changes in the expression of metalloproteinase genes and proteins were also assessed. The results indicated increased cell migration (14.5-fold, P = 0.001) as measured using 8-μm PET inserts (BD Falcon) in a transwell assay and invasiveness (1.7-fold, P = 0.003) as measured using 8-μm Matrigel (BD Biocoat) invasion inserts in a 24-well plate assay format, following exposure to the Bacillus proteins. Cells exposed to the Bacillus protein showed a dose-dependent increase in expression of genes coding for matrix metalloprotease (MMP)-3 (61-fold) and MPP-9 (301-fold). This dose-dependent increase in gene expression was also reflected in elevated levels of MMP-9 protein (1.34-fold, P = 0.033) and increased matrix metalloprotease activity (1.96-fold, P = 0.043) being present in the culture supernatant. Cells also displayed reduced levels of β-integrin (1.25-fold, P = 0.01), indicative of increased motility and elevated levels of vinculin (2.7-fold, P = 0.0009), suggesting altered motility. The results indicate that exposure of corneal epithelial cells to Bacillus proteins results in an aberrant wound healing response as visualized using a scratch wound assay. These results suggest a possible link between the high density of Demodex mites on the eyelashes of ocular rosacea patients and the development of corneal ulcers.

  3. Coping with Rosacea: Tripwires

    Science.gov (United States)

    ... any moisturizer or makeup. Men should use an electric shaver rather than a blade . If a blade ... Glossary About Us Overview History Program Services Organization Key Staff Board of Directors Medical Advisory Board Expert ...

  4. Phenolic Profile of Potentilla anserina L. (Rosaceae) Herb of Siberian Origin and Development of a Rapid Method for Simultaneous Determination of Major Phenolics in P. anserina Pharmaceutical Products by Microcolumn RP-HPLC-UV

    OpenAIRE

    Olennikov,Daniil N.; Kashchenko, Nina I.; Nadezhda K. Chirikova; Sargylana S. Kuz'mina

    2014-01-01

    A chemical study of Potentilla anserina L. herb (Rosaceae) of Siberian origin led to the isolation of 17 compounds. Three ellagitannins—potentillin, agrimonic acid A and B—are reported for the first time in this species. With a view to rapid quantitative analysis, a new method was developed for simultaneous determination of major phenolic compounds in P. anserina, including caffeic acid, myricetin-3-O-glucuronide, agrimoniin, ellagic acid, miquelianin, isorhamnetin-3-O-glucuronide, and kaempf...

  5. Fatores associados à rosácea em amostras populacionais do Sul do Brasil: análise de estudos casos-controles Factors associated with rosacea in population samples of Southern Brazil: analysis of case-control studies

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    Renan Rangel Bonamigo

    2008-10-01

    Full Text Available FUNDAMENTOS: A rosácea é dermatose que apresenta uma série de variáveis associadas a seu surgimento. A maioria dos estudos é proveniente dos Estados Unidos da América e de países europeus, sendo escasso o conhecimento produzido e publicado acerca da doença no Hemisfério Sul, particularmente no Brasil. OBJETIVOS: Descrever os principais fatores clínicos e histopatológicos associados à rosácea em amostras populacionais do sul do Brasil. MÉTODOS: Dois estudos casos-controles realizados em seqüência, com análise univariada e bivariada, utilizando-se p BACKGROUND: Rosacea is a dermatosis that has many factors associated with its onset. Most studies on this condition come from the United States and European countries, with little information produced and published about the disease in the Southern hemisphere, particularly in Brazil. OBJECTIVES: To describe the main clinical and histopathological factors associated with rosacea in population samples from southern Brazil. METHODS: Two case-control studies performed sequentially, with univariate and bivariate analysis, using p<0.05 for statistical significance (Chi-square test and Mantel-Haenzel, for stratifications RESULTS: Rosacea is most frequent among women and in the age range of 40-50 years. Almost all cases have phototypes II and III. The inflammatory forms of rosacea are more often diagnosed than the vascular form and there is an association with serological positivity to Helicobacter pylori and with histopathological presence of Demodex folliculorum (p<0.05. Emotional and climatic changes, exposure to the sun and intake of alcoholic beverages were the main factors described as provoking or worsening the disease. CONCLUSIONS: We have obtained an overview of rosacea in a sample of the southern population of Brazil. While some data are similar to those already described internationally, other aspects, such as economic issues and the factors described as provoking or worsening the

  6. The complete chloroplast genome sequence of strawberry (Fragaria  × ananassa Duch. and comparison with related species of Rosaceae

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    Hui Cheng

    2017-10-01

    Full Text Available Compared with other members of the family Rosaceae, the chloroplast genomes of Fragaria species exhibit low variation, and this situation has limited phylogenetic analyses; thus, complete chloroplast genome sequencing of Fragaria species is needed. In this study, we sequenced the complete chloroplast genome of F. × ananassa ‘Benihoppe’ using the Illumina HiSeq 2500-PE150 platform and then performed a combination of de novo assembly and reference-guided mapping of contigs to generate complete chloroplast genome sequences. The chloroplast genome exhibits a typical quadripartite structure with a pair of inverted repeats (IRs, 25,936 bp separated by large (LSC, 85,531 bp and small (SSC, 18,146 bp single-copy (SC regions. The length of the F. × ananassa ‘Benihoppe’ chloroplast genome is 155,549 bp, representing the smallest Fragaria chloroplast genome observed to date. The genome encodes 112 unique genes, comprising 78 protein-coding genes, 30 tRNA genes and four rRNA genes. Comparative analysis of the overall nucleotide sequence identity among ten complete chloroplast genomes confirmed that for both coding and non-coding regions in Rosaceae, SC regions exhibit higher sequence variation than IRs. The Ka/Ks ratio of most genes was less than 1, suggesting that most genes are under purifying selection. Moreover, the mVISTA results also showed a high degree of conservation in genome structure, gene order and gene content in Fragaria, particularly among three octoploid strawberries which were F. × ananassa ‘Benihoppe’, F. chiloensis (GP33 and F. virginiana (O477. However, when the sequences of the coding and non-coding regions of F. × ananassa ‘Benihoppe’ were compared in detail with those of F. chiloensis (GP33 and F. virginiana (O477, a number of SNPs and InDels were revealed by MEGA 7. Six non-coding regions (trnK-matK, trnS-trnG, atpF-atpH, trnC-petN, trnT-psbD and trnP-psaJ with a percentage of variable sites greater than 1

  7. Biphenyl Phytoalexin in Sorbus pohuashanensis Suspension Cell Induced by Yeast Extract

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    Liangyun Zhou

    2016-09-01

    Full Text Available Biphenyls are unique phytoalexins de novo synthesized in plants in response to pathogen attack. These compounds are found in Maloideae, a subfamily of the Rosaceae. The anti-microbial activities of biphenyls have been reported in a number of studies and they appear to represent an important defense strategy against pathogens common in the Maloideae, such as species in Malus, Pyrus, Sorbus, and Chaenomeles. Here, cell suspension cultures of Sorbus pohuashanensis were established to study biphenyl phytoalexins formation after yeast extract (YE treatment. An ultra-performance liquid chromatography (UPLC method coupled with quadrupole time of flight mass spectrometry (Q-TOF-MS LC−MS/MS was applied to determine the time course of these biphenyl biomarkers accumulation in YE-treated S. pohuashanensis suspension cells. The results of quantitative analyses show the content of Noraucuparin, 2′-Hydroxyaucuparin, and their glycosides initially increased, then decreased over time. The Noraucuparin content reached its highest (225.76 μg·g−1 at 18 h after treatment, 6 hours earlier than that of Noraucuparin 5-O-β-d-glucopyranoside. The content of 2′-Hydroxyaucuparin reached its highest (422.75 μg·g−1 at 30 h after treatment, also earlier than that of its glycoside. The understanding of phytoalexin metabolism in this study may provide a basis for improving Maloideae resistance to pathogens.

  8. Two psammophilic noctuids newly associated with beach plum, Prunus maritima (Rosaceae): The Dune Noctuid (Sympistis riparia) and Coastal Heathland Cutworm (Abagrotis benjamini) in Northeastern North America (Lepidoptera, Noctuidae).

    Science.gov (United States)

    Goldstein, Paul Z; Nelson, Michael W

    2017-01-01

    Beach plum, Prunus maritima Marshall, 1785 not Wangenh., 1787 (Rosaceae), currently under development as a potential crop, represents an under-acknowledged host plant for several Lepidoptera that have undergone declines in the northeastern USA. The Coastal Heathland Cutworm, Abagrotis nefascia (Smith, 1908), and the Dune Noctuid, Sympistis riparia (Morrison, 1875), are unrelated species of psammophilic noctuines (Lepidoptera: Noctuidae) regularly encountered on a localized basis in coastal southern New England and New York, and whose precise life history requirements are undocumented. We inferred and, based on field observation and rearing, corroborated beach plum as a larval host for these species in Massachusetts; the plant's role in sustaining other moths with limited or contracting regional distributions is discussed. Sympistis riparia, belonging to a widely distributed complex of closely related species, has been associated specifically with both maritime and freshwater dunes. The eastern populations of Abagrotis nefascia represent a conspicuous range disjunction, separated from the nearest western populations by more than 2000 miles, and originally described by Franclemont as race benjamini of Abagrotis crumbi, both later synonymized with Abagrotis nefascia. Following examination of types and other material, an evaluation of putatively diagnostic features from both the original description and our own observations, genitalic characters, and the results of provisional barcode analyses, Abagrotis benjamini Franclemont, stat. rev., is elevated to the rank of a valid species rather than representing eastern populations of Abagrotis nefascia (=crumbi) to which it originally referred.

  9. Arum-type of arbuscular mycorrhizae, dark septate endophytes and Olpidium spp. in fine roots of container-grown seedlings of Sorbus torminalis (Rosaceae

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    Roman M. Bzdyk

    2016-06-01

    Full Text Available The aim of this study was to determine the mycorrhizal status of nursery seedlings of the wild service tree (Sorbus torminalis, which belongs to the Rosaceae family. Its mycorrhizal associations are still fragmentarily known, and data from the few existing studies indicate that it forms ectomycorrhizal symbiosis (ECM. We analyzed the degree of mycorrhizal colonization of thirty 2-year-old container-grown S. torminalis nursery seedlings, which belonged to three single-tree progenies. The roots were dominated by arbuscular mycorrhizae (AM, with the morphology of the Arum-type containing arbuscules, vesicles and hyphae; however, no ECM structures were found. The degree of root colonization of the analyzed seedlings by AM fungi was 83.6% and did not differ significantly between the three single-tree progenies. In addition to AM, structures of dark septate endophytes (0.7% and sporangia of Olpidium spp. (1.1% were found in wild service tree roots. In agreement with previous studies, we confirmed arbuscular mycorrhizae for S. torminalis. Moreover, this is the first report that roots of this Sorbus species show the Arum-type morphology of AM and are associated with Olpidium species.

  10. Efecto del fotoperiodo y la temperatura sobre la composición bioquímica en reproductores silvestres de cabrilla sardinera, Mycteroperca rosacea (Streets, 1877

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    José Antonio Estrada-Godínez

    2014-03-01

    Full Text Available Se estimó el factor de condición (K, el índice gonadosomático (IGS, hepatosomático (IHS y de grasa visceral (IGV, así como la composición bioquímica en diferentes tejidos de reproductores silvestres de cabrilla sardinera, Mycteroperca rosacea, para evaluarlos a lo largo de un ciclo reproductivo y ver la relación que presentan los cambios con respecto a la temperatura del agua y fotoperiodo de la zona de muestreo. Se capturaron 187 reproductores, 146 hembras y 41 machos en el golfo de California, México. Se observaron diferencias significativas (P < 0,005 en los IGS, IHS e IGV; en el caso de K no se encontraron diferencias. También, se observaron variaciones significativas (P < 0,05 en la mayoría de los parámetros bioquímicos, encontrándose los valores más altos durante la etapa de desove, mientras que los más bajos durante la etapa de reposo. Todos los índices estimados y los parámetros bioquímicos determinados, se correlacionaron significativamente (P < 0,05 con el fotoperiodo, mientras que solo se encontraron correlaciones significativas (P < 0,05 entre el IGS e IGV con respecto a la temperatura del agua.

  11. Once-daily topical brimonidine tartrate gel 0·5% is a novel treatment for moderate to severe facial erythema of rosacea: results of two multicentre, randomized and vehicle-controlled studies.

    Science.gov (United States)

    Fowler, J; Jarratt, M; Moore, A; Meadows, K; Pollack, A; Steinhoff, M; Liu, Y; Leoni, M

    2012-03-01

    Erythema of rosacea is thought to result from abnormal cutaneous vasomotor activity. Brimonidine tartrate (BT) is a highly selective α(2) -adrenergic receptor agonist with vasoconstrictive activity. To determine the optimal concentration and dose regimen of topical BT gel for the treatment of erythema of rosacea and to evaluate its efficacy and safety. In study A, 122 subjects were randomized to receive a single application of BT 0·07%, 0·18%, 0·5% or vehicle. In study B (4-week treatment and 4-week follow-up), 269 subjects were randomized to receive BT 0·5% once daily, BT 0·18% once daily, vehicle once daily, BT 0·18% twice daily or vehicle twice daily. Evaluations included Clinician's Erythema Assessment (CEA), Patient's Self-Assessment (PSA), Chroma Meter measurements and adverse events. In study A, a single application of topical BT gel reduced facial erythema in a dose-dependent fashion. A significant difference between BT 0·5% and vehicle in Chroma Meter redness value was observed from 30min to 12h after application. In study B, BT 0·5% once daily had a statistically superior success profile (defined as a two-grade improvement on both CEA and PSA over 12h) compared with vehicle once daily on days 1, 15 and 29 (all P<0·001). No tachyphylaxis, rebound of erythema or aggravation of other disease signs (telangiectasia, inflammatory lesions) was observed. All regimens were safe and well tolerated with similarly low incidence of adverse events. Once-daily BT gel 0·5% is well tolerated and provides significantly greater efficacy than vehicle gel for the treatment of moderate to severe erythema of rosacea. © 2011 The Authors. BJD © 2011 British Association of Dermatologists.

  12. Effects of a Facial Cream Containing the Minor Alkaloid Anatabine on Improving the Appearance of the Skin in Mild to Moderate Rosacea: An Open-Label Case Series Study

    Directory of Open Access Journals (Sweden)

    Ryan K. Lanier

    2013-11-01

    Full Text Available Background: Current medical and scientific research indicates that rosacea, a chronic and often debilitating skin condition that primarily affects the central face, may be caused by an overactive or excessive inflammatory immune response. Regardless of etiology, the accompanying redness and inflammation is unsightly and difficult for the patient. Anatabine is an alkaloid from the plant family Solanaceae that has been shown in several preclinical studies to modulate proinflammatory signaling pathways. Objective: A cream containing anatabine was developed and evaluated in an open-label case series study for safety and effects on the appearance of the skin in 10 patients with mild to moderate rosacea. Methods: Patients applied the cream to the face twice daily for a period of 30 days. Patients and the study physician completed safety and efficacy assessments at study end. Results: Results showed that 50% of the patients self-reported improvement in the appearance of their skin, and the physician noted improvement in 70% of the patients. Photographs taken before and after 30 days of cream use provide visual evidence of the improvement in several patients. There were no complications or adverse events reported by any of the patients in the study, indicating that the anatabine cream was safe and very well tolerated. Conclusion: The results of this open-label case series show that a facial cream containing anatabine can improve the appearance of the skin in patients with mild to moderate rosacea and suggest that a double-blind, vehicle-controlled trial in a larger number of subjects is warranted.

  13. Morfología y Fisiología de Tres Especies de Polylepis P. microphylla (Wedd.) Bitter, P.racemosa Ruiz & Pav. y P. subsericans J.F.Macbr.(ROSACEAE) EN TRES NIVELES ALTITUDINALES, EN YANACOCHA, URUBAMBA - CUSCO

    OpenAIRE

    Arroyo Alfaro, Sandra Jackeline

    2016-01-01

    Los bosques de Polylepis representan la vegetación natural de una gran parte de los Andes centrales a altitudes entre 3.500 m y 4.400(-5.000) m, en donde se presentan extremas condiciones ambientales como temperaturas bajas y periodos secos. El presente trabajo tiene como objetivo describir las características morfológicas y fisiológicas en tres especies de Polylepis, P. microphylla (Wedd.) Bitter, P. racemosa Ruiz & Pav. y P. subsericans J.F. Macbr. (Rosaceae) ubicadas en tres niveles altitu...

  14. Reticulate evolution in North American black-fruited hawthorns (Crataegus section Douglasia; Rosaceae): evidence from nuclear ITS2 and plastid sequences.

    Science.gov (United States)

    Zarrei, M; Stefanović, S; Dickinson, T A

    2014-08-01

    The taxonomic complexity of Crataegus (hawthorn; Rosaceae, Maleae), especially in North America, has been attributed by some to hybridization in combination with gametophytic apomixis and polyploidization, whereas others have considered the roles of hybridization and apomixis to be minimal. Study of the chemical composition and therapeutic value of hawthorn extracts requires reproducible differentiation of entities that may be difficult to distinguish by morphology alone. This study sought to address this by using the nuclear ribosomal spacer region ITS2 as a supplementary DNA barcode; however, a lack of success prompted an investigation to discover why this locus gave unsatisfactory results. ITS2 was extensively cloned so as to document inter- and intraindividual variation in this locus, using hawthorns of western North America where the genus Crataegus is represented by only two widely divergent groups, the red-fruited section Coccineae and the black-fruited section Douglasia. Additional sequence data from selected loci on the plastid genome were obtained to enhance further the interpretation of the ITS2 results. In the ITS2 gene tree, ribotypes from western North American hawthorns are found in two clades. Ribotypes from diploid members of section Douglasia occur in one clade (with representatives of the east-Asian section Sanguineae). The other clade comprises those from diploid and polyploid members of section Coccineae. Both clades contribute ribotypes to polyploid Douglasia. Data from four plastid-derived intergenic spacers demonstrate the maternal parentage of these allopolyploids. Repeated hybridization between species of section Douglasia and western North American members of section Coccineae involving the fertilization of unreduced female gametes explains the observed distribution of ribotypes and accounts for the phenetic intermediacy of many members of section Douglasia. © The Author 2014. Published by Oxford University Press on behalf of the Annals

  15. Disentangling the role of hybridization in the evolution of the endangered Arizona cliffrose (Purshia subintegra; Rosaceae): A molecular and morphological analysis

    Science.gov (United States)

    Travis, S.E.; Baggs, J.E.; Maschinski, J.

    2008-01-01

    Hybridization may threaten the conservation status of rare species through genetic assimilation and may confound the ability to distinguish among taxa. We studied these issues in an endangered shrub, Purshia subintegra (Rosaceae), known from four populations growing on limestone outcrops in central Arizona (USA). Using amplified fragment length polymorphisms (AFLP) and the Bayesian clustering algorithm implemented in STRUCTURE, we identified three distinct genetic lineages among Arizona Purshia subintegra and P. stansburiana. An initial split divided San Carlos Basin P. subintegra (considered P. pinkavae by Schaack) from northern P. stansburiana populations (FST = 0.394). A subsequent split separated northern P. stansburiana from two P. subintegra populations at Horseshoe Lake and Burro Creek (FST = 0.207), which comprised a nearly perfect admixture of the two lineages identified in the initial analysis. In the Verde River Valley P. subintegra is sympatric with P. stansburiana and exhibited an average 27% P. stansburiana genes for 5 of 6 stands analyzed, indicating ongoing hybridization and backcrossing with P. subintegra. Individuals carrying >90% P. subintegra markers are identifiable 68% of the time based on morphology, with leaf lobing, leaf size, and leaf length acting as the most reliable indicators of taxonomic status. However, the genetic and morphological distance correlation among individuals was low (r = 0.17, P = 0.0002), indicating that morphology cannot always accurately predict genetic admixture or taxonomy. Overall, our study confirmed the genetic distinctiveness of the San Carlos Basin population, an ancient natural hybrid origin of P. subintegra, and the presence of a hybrid swarm in the Verde Valley, whose conservation value may lie in its heightened genetic diversity. ?? 2007 Springer Science+Business Media B.V.

  16. Variability among the most rapidly evolving plastid genomic regions is lineage-specific: implications of pairwise genome comparisons in Pyrus (Rosaceae and other angiosperms for marker choice.

    Directory of Open Access Journals (Sweden)

    Nadja Korotkova

    Full Text Available Plastid genomes exhibit different levels of variability in their sequences, depending on the respective kinds of genomic regions. Genes are usually more conserved while noncoding introns and spacers evolve at a faster pace. While a set of about thirty maximum variable noncoding genomic regions has been suggested to provide universally promising phylogenetic markers throughout angiosperms, applications often require several regions to be sequenced for many individuals. Our project aims to illuminate evolutionary relationships and species-limits in the genus Pyrus (Rosaceae-a typical case with very low genetic distances between taxa. In this study, we have sequenced the plastid genome of Pyrus spinosa and aligned it to the already available P. pyrifolia sequence. The overall p-distance of the two Pyrus genomes was 0.00145. The intergenic spacers between ndhC-trnV, trnR-atpA, ndhF-rpl32, psbM-trnD, and trnQ-rps16 were the most variable regions, also comprising the highest total numbers of substitutions, indels and inversions (potentially informative characters. Our comparative analysis of further plastid genome pairs with similar low p-distances from Oenothera (representing another rosid, Olea (asterids and Cymbidium (monocots showed in each case a different ranking of genomic regions in terms of variability and potentially informative characters. Only two intergenic spacers (ndhF-rpl32 and trnK-rps16 were consistently found among the 30 top-ranked regions. We have mapped the occurrence of substitutions and microstructural mutations in the four genome pairs. High AT content in specific sequence elements seems to foster frequent mutations. We conclude that the variability among the fastest evolving plastid genomic regions is lineage-specific and thus cannot be precisely predicted across angiosperms. The often lineage-specific occurrence of stem-loop elements in the sequences of introns and spacers also governs lineage-specific mutations. Sequencing

  17. Comparative analysis of the predicted secretomes of Rosaceae scab pathogens Venturia inaequalis and V. pirina reveals expanded effector families and putative determinants of host range.

    Science.gov (United States)

    Deng, Cecilia H; Plummer, Kim M; Jones, Darcy A B; Mesarich, Carl H; Shiller, Jason; Taranto, Adam P; Robinson, Andrew J; Kastner, Patrick; Hall, Nathan E; Templeton, Matthew D; Bowen, Joanna K

    2017-05-02

    Fungal plant pathogens belonging to the genus Venturia cause damaging scab diseases of members of the Rosaceae. In terms of economic impact, the most important of these are V. inaequalis, which infects apple, and V. pirina, which is a pathogen of European pear. Given that Venturia fungi colonise the sub-cuticular space without penetrating plant cells, it is assumed that effectors that contribute to virulence and determination of host range will be secreted into this plant-pathogen interface. Thus the predicted secretomes of a range of isolates of Venturia with distinct host-ranges were interrogated to reveal putative proteins involved in virulence and pathogenicity. Genomes of Venturia pirina (one European pear scab isolate) and Venturia inaequalis (three apple scab, and one loquat scab, isolates) were sequenced and the predicted secretomes of each isolate identified. RNA-Seq was conducted on the apple-specific V. inaequalis isolate Vi1 (in vitro and infected apple leaves) to highlight virulence and pathogenicity components of the secretome. Genes encoding over 600 small secreted proteins (candidate effectors) were identified, most of which are novel to Venturia, with expansion of putative effector families a feature of the genus. Numerous genes with similarity to Leptosphaeria maculans AvrLm6 and the Verticillium spp. Ave1 were identified. Candidates for avirulence effectors with cognate resistance genes involved in race-cultivar specificity were identified, as were putative proteins involved in host-species determination. Candidate effectors were found, on average, to be in regions of relatively low gene-density and in closer proximity to repeats (e.g. transposable elements), compared with core eukaryotic genes. Comparative secretomics has revealed candidate effectors from Venturia fungal plant pathogens that attack pome fruit. Effectors that are putative determinants of host range were identified; both those that may be involved in race-cultivar and host

  18. Comparative pharmacokinetics and bioavailability of brimonidine following ocular and dermal administration of brimonidine tartrate ophthalmic solution and gel in patients with moderate-to-severe facial erythema associated with rosacea.

    Science.gov (United States)

    Benkali, K; Leoni, M; Rony, F; Bouer, R; Fernando, A; Graeber, M; Wagner, N

    2014-07-01

    Persistent facial erythema is the most common primary pathological feature of rosacea, the only treatment for which is brimonidine tartrate (BT) gel. To assess the relative bioavailability of topical BT gel in comparison with the ophthalmic BT solution. A pharmacokinetic study was conducted to compare intraindividual systemic exposures after dermal application of BT gel (0·07%, 0·18% and 0·5%) under maximal use conditions in patients with moderate-to-severe facial erythema associated with rosacea, and administration of BT ophthalmic solution 0·2%. Patients who received BT ophthalmic solution 0·2% three times a day for 1 day had a mean Cmax of 54 ± 28 pg mL(-1) and a mean 0-24-h area under the curve (AUC0-24 h ) of 568 ± 277 pg h mL(-1) . Topical application of BT gel for 29 days resulted in quantifiable systemic exposure in 22%, 48%, 71% and 79% of patients who received BT gel 0·07% twice daily, 0·18% once daily, 0·18% twice daily and 0·5% once daily, respectively. The mean Cmax values for the BT gels ranged between 13 and 25 pg mL(-1) , and mean AUC0-24 h values ranged between 42 and 290 pg h mL(-1) . Systemic exposure increased with applied dose, with no drug accumulation for the duration of treatment. The systemic exposure observed with the highest dose of BT gel (0·5% once daily) was significantly lower than the systemic levels observed for the ophthalmic solution. 0·2% apply for all the concentrations. The systemic safety profile of BT gel may be considered better than that of the ophthalmic solution. © 2014 British Association of Dermatologists.

  19. Studies on Lejeuneaceae subfam. Ptychanthoideae (Hepaticae) IV. Verdoornianthus, a new Genus from Amazonas, Brazil

    NARCIS (Netherlands)

    Gradstein, S.R.

    1977-01-01

    The new Amazonian liverwort genus Verdoornianthus is considered to be a specialized derivative of the widespread tropical genus Archilejeunea. Differences are the absence of innovations, the dull, suberect leaves, the tristratose rhizoid pad and the larger size of the lobule of the female bracts in

  20. Oberholzeria (Fabaceae subfam. Faboideae, a new monotypic legume genus from Namibia.

    Directory of Open Access Journals (Sweden)

    Wessel Swanepoel

    Full Text Available Oberholzeria etendekaensis, a succulent biennial or short-lived perennial shrublet is described as a new species, and a new monotypic genus. Discovered in 2012, it is a rare species known only from a single locality in the Kaokoveld Centre of Plant Endemism, north-western Namibia. Phylogenetic analyses of molecular sequence data from the plastid matK gene resolves Oberholzeria as the sister group to the Genisteae clade while data from the nuclear rDNA ITS region showed that it is sister to a clade comprising both the Crotalarieae and Genisteae clades. Morphological characters diagnostic of the new genus include: 1 succulent stems with woody remains; 2 pinnately trifoliolate, fleshy leaves; 3 monadelphous stamens in a sheath that is fused above; 4 dimorphic anthers with five long, basifixed anthers alternating with five short, dorsifixed anthers, and 5 pendent, membranous, one-seeded, laterally flattened, slightly inflated but indehiscent fruits.

  1. Studies on Lejeuneaceae subfam. Ptychanthoideae VI. A revision of Schiffneriolejeunea sect. Saccatae from Asia

    NARCIS (Netherlands)

    Gradstein, S. Rob; Terken, Lucie

    1981-01-01

    The originally monotypic eastern Malaysian genus Schiffneriolejeunea Verdoorn 1933 has now become a widespread, pantropical group of about fifteen species by the inclusion of species from the genus Ptychocoleus Trev. nom. illeg. Six species are known from Asia, three of which constitute the sect.

  2. The evolution of floral ontogenetic allometry in the Andean genus Caiophora (Loasaceae, subfam. Loasoideae).

    Science.gov (United States)

    Strelin, Marina Micaela; Benitez-Vieyra, Santiago; Fornoni, Juan; Klingenberg, Christian Peter; Cocucci, Andrea

    2018-01-01

    The astounding variety of angiosperm flower morphologies has evolved in response to many selective forces. Flower development is highly coordinated and involves developmental associations between size and shape, ontogenetic allometry, which in turn affect the morphology of mature flowers. Although ontogenetic allometries can act as a developmental constraint and may influence adaptive evolution, allometries can evolve themselves and may change rapidly in response to selection. We explored the evolution of ontogenetic allometry in the flowers of 11 species of Loasoideae. Seven species belong to Caiophora, which radiated recently in the central Andes, and contains species that are pollinated by bees, hummingbirds, and small rodents. According to a previous study, the diversification of Caiophora involved departures from simple allometric scaling, but the changes to allometry that enabled flower diversification have not been explored yet. We characterized the ontogenetic allometry of each species with the methods of geometric morphometrics. We studied the evolution of allometries by constructing allometric spaces, in which the allometry of each species is represented by a point and the arrangement of points indicates the relations among allometric trajectories. To examine the history of changes of ontogenetic allometries, we projected the phylogeny into the allometric spaces. Inspection of allometric spaces suggests that ontogenetic variation is limited to a few dominant features. The allometries of the two main functional flower parts under study differ in their evolutionary labilities, and patterns of variation reflect pollination systems, differences in structural organization, and abiotic environmental factors. © 2017 Wiley Periodicals, Inc.

  3. Studies on Lejeuneaceae Subfam. Ptychanthoideae, V. A Review of the Species from Ceylon

    NARCIS (Netherlands)

    Gradstein, S. Rob; Inoue, Hiroshi

    1980-01-01

    In the spring of 1966, the junior author (H. Inoue) made a bryophyte collecting trip to Ceylon (now Sri Lanka) with the support of the Japan Society for the Promotion of Science. The collections have served as a basis for reviews of individual liverwort genera or families occurring in Ceylon, e.g.

  4. A revised generic classification for Aloe (Xanthorrhoeaceae subfam. Asphodeloideae)

    DEFF Research Database (Denmark)

    Grace, Olwen Megan; Klopper, Ronell R.; Smith, Gideon F.

    2013-01-01

    of the traditionally broadly circumscribed genus Aloe, a charismatic Old World group of leaf succulents, has necessitated nomenclatural adjustments. We propose a narrower generic concept for Aloe s. str. and the recognition of segregate genera to reflect accumulating evidence for monophyletic groups: here, the genus...

  5. A case of granulomatous rosacea

    African Journals Online (AJOL)

    A 49-year-old housewife had complained of an itchy facial rash for four years. She denied using steroid creams and skin lighteners. On examination, dark grey papules were found on her face, with some coalescing into plaques (see Figures 1 and. 2). A skin biopsy revealed many perifollicular non-caseating granulomas ...

  6. Genetic evidence that two independent S-loci control RNase-based self-incompatibility in diploid strawberry.

    Science.gov (United States)

    Bosković, Radovan I; Sargent, Daniel J; Tobutt, Kenneth R

    2010-03-01

    The self-incompatibility mechanism that reduces inbreeding in many plants of the Rosaceae is attributed to a multi-allelic S locus which, in the Prunoideae and Maloideae subfamilies, comprises two complementary genes, a stylar-expressed S-RNase and a pollen-expressed SFB. To elucidate incompatibility in the subfamily Rosoideae, stylar-specific RNases and self-(in)compatibility status were analysed in various diploid strawberries, especially Fragaria nubicola and F. viridis, both self-incompatible, and F. vesca, self-compatible, and in various progenies derived from them. Unexpectedly, two unlinked RNase loci, S and T, were found, encoding peptides distinct from Prunoideae and Maloideae S-RNases; the presence of a single active allele at either is sufficient to confer self-incompatibility. By contrast, in diploid Maloideae and Prunoideae a single locus encodes S-RNases that share several conserved regions and two active alleles are required for self-incompatibility. Our evidence implicates the S locus in unilateral inter-specific incompatibility and shows that S and T RNases can, remarkably, confer not only allele-specific rejection of cognate pollen but also unspecific rejection of Sn Tn pollen, where n indicates a null allele, consistent with the the presence of the pollen component, SFB, activating the cognitive function of these RNases. Comparison of relevant linkage groups between Fragaria and Prunus suggests that Prunus S-RNases, unique in having two introns, may have resulted from gene conversion in an ancestor of Prunus. In addition, it is shown that there is a non-S locus that is essential for self-incompatibility in diploid Fragaria.

  7. Long-term safety of ivermectin 1% cream vs azelaic acid 15% gel in treating inflammatory lesions of rosacea: results of two 40-week controlled, investigator-blinded trials.

    Science.gov (United States)

    Stein Gold, Linda; Kircik, Leon; Fowler, Joseph; Jackson, J Mark; Tan, Jerry; Draelos, Zoe; Fleischer, Alan; Appell, Melanie; Steinhoff, Martin; Lynde, Charles; Sugarman, Jeffrey; Liu, Hong; Jacovella, Jean

    2014-11-01

    Papulopustular rosacea (PPR) is characterized by facial erythema and inflammatory lesions believed to be primarily caused by dysregulation of the innate immune system. More recent evidence also suggests that Demodex folliculorum mites may contribute to the etiology of PPR. Ivermectin (IVM) 1% cream is a novel topical treatment developed to treat PPR. Two phase 3 trials have demonstrated that IVM 1% cream was significantly better than vehicle at investigator global assessment (IGA) success rate and lesion reductions and that it was safe and well tolerated. Two 40-week extension studies of those trials were conducted to assess the long-term safety of IVM 1% cream vs azelaic acid (AzA) 15% gel. Subjects originally treated with IVM 1% continued on IVM 1% and those originally treated with vehicle switched to AzA 15% gel. IVM 1% cream was safe throughout the study with a lower incidence of related adverse events (AEs) compared to AzA 15% gel. No subjects in the IVM 1% cream group discontinued either study due to a related AE. IVM 1% also continued to be efficacious during the 40-week extension studies as the percentage of subjects with IGA scores of clear or almost clear was higher at the end of the study compared to baseline. The results of these 40-week extension studies support the use of IVM 1% cream as a long-term therapy for PPR as IVM 1% cream was shown to be safe and effective for up to 52 weeks of total treatment.

  8. Biphenyl synthase from yeast-extract-treated cell cultures of Sorbus aucuparia.

    Science.gov (United States)

    Liu, Benye; Beuerle, Till; Klundt, Tim; Beerhues, Ludger

    2004-01-01

    Biphenyls and dibenzofurans are the phytoalexins of the Maloideae, a subfamily of the economically important Rosaceae. The biphenyl aucuparin accumulated in Sorbus aucuparia L. cell cultures in response to yeast extract treatment. Incubation of cell-free extracts from challenged cell cultures with benzoyl-CoA and malonyl-CoA led to the formation of 3,5-dihydroxybiphenyl. This reaction was catalysed by a novel polyketide synthase, which will be named biphenyl synthase. The most efficient starter substrate for the enzyme was benzoyl-CoA. Relatively high activity was also observed with 2-hydroxybenzoyl-CoA but, instead of the corresponding biphenyl, the derailment product 2-hydroxybenzoyltriacetic acid lactone was formed.

  9. Phenolic Profile of Potentilla anserina L. (Rosaceae Herb of Siberian Origin and Development of a Rapid Method for Simultaneous Determination of Major Phenolics in P. anserina Pharmaceutical Products by Microcolumn RP-HPLC-UV

    Directory of Open Access Journals (Sweden)

    Daniil N. Olennikov

    2014-12-01

    Full Text Available A chemical study of Potentilla anserina L. herb (Rosaceae of Siberian origin led to the isolation of 17 compounds. Three ellagitannins—potentillin, agrimonic acid A and B—are reported for the first time in this species. With a view to rapid quantitative analysis, a new method was developed for simultaneous determination of major phenolic compounds in P. anserina, including caffeic acid, myricetin-3-O-glucuronide, agrimoniin, ellagic acid, miquelianin, isorhamnetin-3-O-glucuronide, and kaempferol-3-O-rhamnoside. The quantitative determination was conducted by microcolumn reversed phase high-performance liquid chromatography with UV detection. Separation was performed using a ProntoSIL-120-5-C18 AQ column (60 mm × 1 mm × 5 μm with six-step gradient elution of aqueous 0.2 М LiClO4 in 0.006 M HClO4 and acetonitrile as mobile phases. The components were quantified by HPLC-UV at 270 nm. All calibration curves showed good linearity (r2 > 0.999 within test ranges. The reproducibility was evaluated by intra- and inter-day assays, and RSD values were less than 2.8%. The recoveries were between 97.15 and 102.38%. The limits of detection ranged from 0.21 to 1.94 μg/mL, and limits of quantification ranged from 0.65 to 5.88 μg/mL, respectively. Various solvents, extraction methods, temperatures, and times were evaluated to obtain the best extraction efficiency. The developed method was successfully applied for the analysis of selected pharmaceutical products: 12 batches of P. anserina herb collected from three Siberian regions (Yakutia, Buryatia, Irkutsk, two commercial samples of P. anserina herb, and some preparations (liquid extract, tincture, decoction, infusion, and dry extract.

  10. Phenolic profile of Potentilla anserina L. (Rosaceae) herb of siberian origin and development of a rapid method for simultaneous determination of major Phenolics in P. anserina pharmaceutical products by microcolumn RP-HPLC-UV.

    Science.gov (United States)

    Olennikov, Daniil N; Kashchenko, Nina I; Chirikova, Nadezhda K; Kuz'mina, Sargylana S

    2014-12-24

    A chemical study of Potentilla anserina L. herb (Rosaceae) of Siberian origin led to the isolation of 17 compounds. Three ellagitannins-potentillin, agrimonic acid A and B-are reported for the first time in this species. With a view to rapid quantitative analysis, a new method was developed for simultaneous determination of major phenolic compounds in P. anserina, including caffeic acid, myricetin-3-O-glucuronide, agrimoniin, ellagic acid, miquelianin, isorhamnetin-3-O-glucuronide, and kaempferol-3-O-rhamnoside. The quantitative determination was conducted by microcolumn reversed phase high-performance liquid chromatography with UV detection. Separation was performed using a ProntoSIL-120-5-C18 AQ column (60 mm × 1 mm × 5 μm) with six-step gradient elution of aqueous 0.2 М LiClO4 in 0.006 M HClO4 and acetonitrile as mobile phases. The components were quantified by HPLC-UV at 270 nm. All calibration curves showed good linearity (r2 > 0.999) within test ranges. The reproducibility was evaluated by intra- and inter-day assays, and RSD values were less than 2.8%. The recoveries were between 97.15 and 102.38%. The limits of detection ranged from 0.21 to 1.94 μg/mL, and limits of quantification ranged from 0.65 to 5.88 μg/mL, respectively. Various solvents, extraction methods, temperatures, and times were evaluated to obtain the best extraction efficiency. The developed method was successfully applied for the analysis of selected pharmaceutical products: 12 batches of P. anserina herb collected from three Siberian regions (Yakutia, Buryatia, Irkutsk), two commercial samples of P. anserina herb, and some preparations (liquid extract, tincture, decoction, infusion, and dry extract).

  11. In Vivo Anti-Diabetic Activity of the Ethanolic Crude Extract of Sorbus decora C.K.Schneid. (Rosacea): A Medicinal Plant Used by Canadian James Bay Cree Nations to Treat Symptoms Related to Diabetes

    Science.gov (United States)

    Vianna, Rose; Brault, Antoine; Martineau, Louis C.; Couture, Réjean; Arnason, John T.; Haddad, Pierre S.

    2011-01-01

    A number of potential anti-diabetic plants were identified through an ethnobotanical survey of the traditional pharmacopeia of the Cree of Eeyou Istchee (CEI—Northeastern Canada) used against symptoms of diabetes and their biological activity assessed by in vitro bioassays. Among these, Sorbus decora C.K.Schneid. (Rosacea) ranked highly and increased the transport of glucose in skeletal muscle cells in culture. The present study thus aimed at confirming the antidiabetic potential of S. decora in in vivo models of insulin resistance and diabetes, notably the streptozotocin Type 1 diabetic rat (STZ), the genetic KK-Ay Type 2 diabetic mouse and the rat rendered insulin resistant with 10% glucose water consumption for 6 weeks. Sorbus decora ethanolic crude extract (SDEE) was administered orally (200 mg kg−1) and compared to metformin (150 or 500 mg kg−1). The intragastric (i.g.) gavage of SDEE transiently decreased glycemia in STZ rats in a bi-phasic manner but the effect was cumulative over several days. In KK-Ay mice, SDEE incorporated in food (0.12%) decreased glycemia by 15% within 1 week as compared to vehicle controls. In pre-diabetic insulin-resistant rats, SDEE fed daily by i.g. gavage for 2 weeks significantly decreased the slight hyperglycemia and hyperinsulinemia, without affecting sugar water intake. Using the HOMA insulin resistance parameter, the effect of SDEE was equivalent to that of metformin. In conclusion, the ethanolic crude extract of S. decora demonstrates both anti-hyperglycemic and insulin-sensitizing activity in vivo, thereby confirming anti-diabetic potential and validating CEI traditional medicine. PMID:19887507

  12. Organik ve Konvansiyonel Yağ Gülü Rosa damascena Miller (Rosales: Rosaceae Yetiştiriciliğinde Böcek Biyolojik Çeşitlilik Değerlerinin Hesaplanması

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    Özlem DİNÇ ORTAÇ

    2015-09-01

    Full Text Available The aim of the study is comparison of diversity, population density and similarity index of insects living in Rosa damascena Miller (Rosales: Rosaceae (oil rose gardens managed by rules of organic and conventional farming chosen in Isparta province, Keçiborlu County, Ardıçlı village during 2012. Pitfall traps, knockdown, sweeping and counting with eyes sampling methods were used for sampling of the insect species between April and October where the insect species population density could be found the highest and taken rates of species from pitfall traps compared for statistically significant between organic and conventional oil rose gardens. Finally both agro-ecosystems no pesticide application were used and managed by the rules of organic farming were found different results of insect bio-diversity then another two agro-ecosystems pesticide application were used and managed by the rules of the conventional faming. Shannon-Wiener and Simpson diversity index were found lower in both conventional rose gardens than other 2 organic rose agro-ecosystems while Shannon-evenness were found more stable in organic rose gardens than conventional ones. The data obtained by pitfall traps have given a more precise than the other sampling methods and according to evaluation of pitfall trap, similarity index of two agro-ecosystems managed by conventional farming rules were found 72.38% to each other and these habitats were found the most similar habitats. Besides, sampled insect species belonging to Carabidae, Scarabaeidae, and Tenebrionidae families were declared the first time with this study

  13. In Vivo Anti-Diabetic Activity of the Ethanolic Crude Extract of Sorbus decora C.K.Schneid. (Rosacea: A Medicinal Plant Used by Canadian James Bay Cree Nations to Treat Symptoms Related to Diabetes

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    Rose Vianna

    2011-01-01

    Full Text Available A number of potential anti-diabetic plants were identified through an ethnobotanical survey of the traditional pharmacopeia of the Cree of Eeyou Istchee (CEI—Northeastern Canada used against symptoms of diabetes and their biological activity assessed by in vitro bioassays. Among these, Sorbus decora C.K.Schneid. (Rosacea ranked highly and increased the transport of glucose in skeletal muscle cells in culture. The present study thus aimed at confirming the antidiabetic potential of S. decora in in vivo models of insulin resistance and diabetes, notably the streptozotocin Type 1 diabetic rat (STZ, the genetic KK-Ay Type 2 diabetic mouse and the rat rendered insulin resistant with 10% glucose water consumption for 6 weeks. Sorbus decora ethanolic crude extract (SDEE was administered orally (200 mg kg-1 and compared to metformin (150 or 500 mg kg-1. The intragastric (i.g. gavage of SDEE transiently decreased glycemia in STZ rats in a bi-phasic manner but the effect was cumulative over several days. In KK-Ay mice, SDEE incorporated in food (0.12% decreased glycemia by 15% within 1 week as compared to vehicle controls. In pre-diabetic insulin-resistant rats, SDEE fed daily by i.g. gavage for 2 weeks significantly decreased the slight hyperglycemia and hyperinsulinemia, without affecting sugar water intake. Using the HOMA insulin resistance parameter, the effect of SDEE was equivalent to that of metformin. In conclusion, the ethanolic crude extract of S. decora demonstrates both anti-hyperglycemic and insulin-sensitizing activity in vivo, thereby confirming anti-diabetic potential and validating CEI traditional medicine.

  14. Efecto nodriza intra-específico de Kageneckia angustifolia D. Don (Rosaceae sobre la germinación de semillas y sobrevivencia de plántulas en el bosque esclerófilo montano de Chile central Intra-specific nurse effect of Kageneckia angustifolia D. Don (Rosaceae and its effect on seed germination and seedling survival in the montane sclerophyllous forest of central Chile

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    ALEJANDRO PEÑALOZA

    2001-09-01

    Full Text Available El bosque esclerófilo montano de Chile central (32-33° S, 1.500-2.100 m de altitud está dominado por poblaciones de Kageneckia angustifolia (Rosaceae, especie semidecidua de verano que forma un dosel muy abierto. Esto sugiere que, a diferencia de lo que ocurre en el matorral esclerófilo de menor altitud donde el cerrado dosel de árboles y arbustos generan condiciones microclimáticas diferentes a los espacios abiertos, en el bosque montano no existiría una marcada diferencia microclimática entre bajo el dosel y los espacios abiertos. Por otro lado, en el bosque montano, las precipitaciones ocurren principalmente en forma de nieve, la que se acumula preferentemente en los espacios entre los árboles, pudiendo facilitar el reclutamiento de nuevos individuos en este microhábitat, fenómeno que se conoce como efecto nodriza. Se estudió el probable efecto nodriza a nivel intra-específico de K. angustifolia comparando el microclima de los ambientes bajo dosel y los espacios abiertos, y el efecto de la acumulación de nieve en la germinación de semillas y sobrevivencia de plántulas de en un bosque esclerófilo montano ubicado en el Santuario de la Naturaleza Yerba Loca, 50 km al este de Santiago (33° S, 1.600 m de altitud. De acuerdo a las variables microclimáticas estudiadas (PAR, humedad del aire y suelo, y temperatura del aire y suelo, en el bosque montano no existen diferencias microclimáticas entre los espacios abiertos y bajo el dosel. Sólo la acumulación de nieve fue significativamente mayor en los espacios abiertos. La germinación fue menor y más tardía en los espacios abiertos, lo que estaría relacionado con la mayor acumulación de nieve. Las plántulas originadas más tempranamente tienen más tiempo para desarrollarse y pasar en forma exitosa la sequía estival en comparación con las plántulas que emergen más tardíamente. Esto explicaría la menor sobrevivencia de las plántulas en los espacios abiertosThe montane

  15. Papaveraceae

    NARCIS (Netherlands)

    Kalis, A.J.

    1979-01-01

    The Papaveraceae are distributed, with a few exceptions, throughout the Northern Hemisphere, especially in both eastern Asia and western North America (subfam. Hypecoideae and subfam. Papaveroideae) and in northern Africa and Asia Minor (subfam. Fumarioideae). The plant family is ill

  16. Papaveraceae

    NARCIS (Netherlands)

    Kalis, A.J.

    The Papaveraceae are distributed, with a few exceptions, throughout the Northern Hemisphere, especially in both eastern Asia and western North America (subfam. Hypecoideae and subfam. Papaveroideae) and in northern Africa and Asia Minor (subfam. Fumarioideae). The plant family is ill

  17. The genus Sanguisorba (Rosaceae) in India

    NARCIS (Netherlands)

    Purohit, K.M.; Panigrahi, G.

    1984-01-01

    Sanguisorba L. emend. Nordboig is represented in India by five taxa: S. officinalis L. subsp. longifolia (Bertol.) Purohit & Panigrahi, stat. nov., S. diandra (Hook. f.) Wallich ex Nordborg var. diandra, S. diandra var. villosa Purohit & Panigrahi, var. nov., S. filiformis (Hook, f.) Hand.-Mazz. and

  18. Revision of Rubus (Rosaceae in Taiwan

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    Juinn-Yih Huang

    2009-11-01

    Full Text Available The genus Rubus L. in Taiwan is taxonomically revised based on morphological and phytogeographical patterns. Forty taxa (34 species, 3 varieties, and 3 hybrids of the genus are recognized, including two new hybrid species R. croceacanthus × corchorifolius and R. rosifolius × fraxinifolius. Among the Rubus taxa in Taiwan, R. croceacanthus H. Lév. exhibits tremendous variation and we do believe that more investigations are needed in the future. Several taxa described in the Flora of Taiwan, 2nd ed. are treated as synonyms of other species, and several taxa in Taiwan are revised. The existence of R. howii Merr. & Chun, R. linearifoliolus Hayata, and R. parvifraxinifolius Hayata in Taiwan are reconfirmed, we described R. howii fruit information which was absent in original literature; and the third taxon is treated as a natural hydrid R. × parvifraxinifolius Hayata which putatively derived from R. rosifolius Sm. and R. linearifoliolus based on intermediate morphology and the scarcity of fruit set. Rubus pseudoacer Makino ssp. flexuosus (Y.-C. Liu & F.-Y. Lu H. Ohashi & C.-F. Hsieh is treated as synonym of R. pseudoacer Makino and is excluded in Taiwan. A key to the taxa, synonyms and taxonomic descriptions of each taxon are presented. Moreover, information about phenology, chromosome number, distribution and specimens examined for each taxon are also provided.

  19. Genetic structure of Potentilla acaulis (Rosaceae) populations ...

    African Journals Online (AJOL)

    Jane

    2011-07-18

    Jul 18, 2011 ... gel-dried P. acaulis leaves with a standard kit (TaKaRa; universal genomic DNA extraction kit, Tokyo, Japan). Sixty primers were screened for polymorphism, readability and reproducibility (Sangon, random primer kit, Shanghai, China). Eleven primers were selected out as the final analysis primers (Table ...

  20. Miliarial type pseudolymphoma mimicking as granulomatous rosacea

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    Gharaei Nejad Kaveh

    2017-07-01

    Full Text Available Miliarial type lymphocytoma cutis is a rare type of psuedolymphoma which is described by numerous semi-translucent papules on the sun exposed regions. Herein, we present a 25-year-old woman with numerous permanent translucent tiny papules on the face. Microscopic examination revealed dense infiltration of lymphocytes in the reticular dermis with lymphoid follicle formation and significant B-cell lymphocytes in immunohistochemistry study. She was diagnosed as miliarial type pseudolymphoma and treated with topical momethasone furoate ointment and oral hydroxychloroquine with a good response.

  1. The Representatives of Amelanchier Medik. Genus in Ukraine

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    Opalko Anatoliy Ivanovich

    2015-04-01

    Full Text Available The information on fruit and decorative value, honey and medicinal properties of the genus Amelanchier Medik. is generalized. Their biological characteristics, chemical composition and palatability traits of the fruit, the ways of consumption and processing, including drying, preparing juices, syrups, jams, candied fruit jellies, confiture, and fruit wine are specified. The environmental adaptability and effectiveness of using juneberry for phytomelioration are mentioned. Several versions of the origin of the genus Amelanchier name and interpretation of its specific epithets are described. The controversial issues of the genus Amelanchier system were discussed from the classical and molecular genetic approaches. The attention is focused on two main aspects of views on the place of the genus Amelanchier representatives of the family Rosaceae Juss. within the particular subfamily, namely the subfamily Pyroideae Burnett (Maloideae S. Weber or the subfamily Amygdaloideae Arn., which indicates the necessity for further comparative morphological and molecular genetic studies of the family Rosaceae. The directions of evolution, habitat and invasive ability of some species of the genus Amelanchier are characterised. The list of the genus Amelanchier representatives cultivated in Ukraine is given.

  2. Citogenética de espécies arbóreas da subfamília Caesalpinioideae-Leguminosae do sul do Brasil

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    Elaine Biondo

    2005-01-01

    Full Text Available Chromosome counts and meiotic behaviour analysis are excellent contributions for studies on taxonomic relationships and evolutionary patterns in plants. The tree legume species of the subfamily Caesalpinioideae have been poorly analysed cytogenetically. This work aimed at determining the number of chromosomes and analysing the meiotic behaviour in 11 species of Caesalpinioideae. Basic chromosome numbers in most of the analysed species were 2n = 28 (x = 14. Senna multijuga (L. C. Rich. H. S. Irwin & Barneby and Schizolobium parahyba (Vell. Blake presented 2n = 24 (x = 12 and Peltophorum dubium (Spreng. Taub. 2n = 26 (x = 13. In all the species nuclei presented an areticulate pattern and a regular meiosis in the six species studied. Further collections and cytogenetic analyses with a major number of individuals and species are suggested, in order to provide additional data for a more comprehensive study on this group of plants.

  3. Salsola sp. A of Flora Zambesiaca from the coast of Mozambique is Caroxylon littoralis (Amaranthaceae subfam. Salsoloideae), hitherto only known from Madagascar

    DEFF Research Database (Denmark)

    Friis, Ib; Holt, Sune

    2017-01-01

    We have identified plants from the coast of the Inhambane Province, Mozambique, with the incompletely known species Salsola sp. A of Flora Zambesiaca and with Caroxylon littoralis (Moq.) Akhani & Roalson (Salsola littoralis Moq.), a species hitherto believed to be endemic to Madagascar and Île...

  4. Phytoalexins of the Pyrinae: Biphenyls and dibenzofurans

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    Cornelia Chizzali

    2012-04-01

    Full Text Available Biphenyls and dibenzofurans are the phytoalexins of the Pyrinae, a subtribe of the plant family Rosaceae. The Pyrinae correspond to the long-recognized Maloideae. Economically valuable species of the Pyrinae are apples and pears. Biphenyls and dibenzofurans are formed de novo in response to infection by bacterial and fungal pathogens. The inducible defense compounds were also produced in cell suspension cultures after treatment with biotic and abiotic elicitors. The antimicrobial activity of the phytoalexins was demonstrated. To date, 10 biphenyls and 17 dibenzofurans were isolated from 14 of the 30 Pyrinae genera. The most widely distributed compounds are the biphenyl aucuparin and the dibenzofuran γ-cotonefuran. The biosynthesis of the two classes of defense compounds is not well understood, despite the importance of the fruit crops. More recent studies have revealed simultaneous accumulation of biphenyls and dibenzofurans, suggesting sequential, rather than the previously proposed parallel, biosynthetic pathways. Elicitor-treated cell cultures of Sorbus aucuparia served as a model system for studying phytoalexin metabolism. The key enzyme that forms the carbon skeleton is biphenyl synthase. The starter substrate for this type-III polyketide synthase is benzoyl-CoA. In apples, biphenyl synthase is encoded by a gene family, members of which are differentially regulated. Metabolism of the phytoalexins may provide new tools for designing disease control strategies for fruit trees of the Pyrinae subtribe.

  5. Leaf traits in parental and hybrid species of Sorbus (Rosaceae).

    Science.gov (United States)

    Durkovic, Jaroslav; Kardosová, Monika; Canová, Ingrid; Lagana, Rastislav; Priwitzer, Tibor; Chorvát, Dusan; Cicák, Alojz; Pichler, Viliam

    2012-09-01

    Knowledge of functional leaf traits can provide important insights into the processes structuring plant communities. In the genus Sorbus, the generation of taxonomic novelty through reticulate evolution that gives rise to new microspecies is believed to be driven primarily by a series of interspecific hybridizations among closely related taxa. We tested hypotheses for dispersion of intermediacy across the leaf traits in Sorbus hybrids and for trait linkages with leaf area and specific leaf area. Here, we measured and compared the whole complex of growth, vascular, and ecophysiological leaf traits among parental (Sorbus aria, Sorbus aucuparia, Sorbus chamaemespilus) and natural hybrid (Sorbus montisalpae, Sorbus zuzanae) species growing under field conditions. A recently developed atomic force microscopy technique, PeakForce quantitative nanomechanical mapping, was used to characterize the topography of cell wall surfaces of tracheary elements and to map the reduced Young's modulus of elasticity. Intermediacy was associated predominantly with leaf growth traits, whereas vascular and ecophysiological traits were mainly parental-like and transgressive phenotypes. Larger-leaf species tended to have lower modulus of elasticity values for midrib tracheary element cell walls. Leaves with a biomass investment related to a higher specific leaf area had a lower density. Leaf area- and length-normalized theoretical hydraulic conductivity was related to leaf thickness. For the whole complex of examined leaf traits, hybrid microspecies were mosaics of parental-like, intermediate, and transgressive phenotypes. The high proportion of transgressive character expressions found in Sorbus hybrids implies that generation of extreme traits through transgressive segregation played a key role in the speciation process.

  6. Molecular phylogenetics and historical biogeography of Sorbus sensu stricto (Rosaceae).

    Science.gov (United States)

    Li, Meng; Ohi-Toma, Tetsuo; Gao, Yun-Dong; Xu, Bo; Zhu, Zhang-Ming; Ju, Wen-Bin; Gao, Xin-Fen

    2017-06-01

    Explaining how plants from eastern Asia migrated to other Northern Hemisphere regions is still challenging. The genus Sorbus sensu stricto (including c. 88 species) is considered as a good example to illuminate this scenario, due to the wide distribution in the temperate zone and high diversity in the Himalayas and Hengduan Mountains. Based on four nuclear markers (LEAFY-2, GBSSI-1, SBEI and WD) and one chloroplast marker (rps16-trnK), we reconstructed the phylogenetic relationship of Sorbus using 54 taxa (60% of the genus representing all subgenera, sections, or series and geographical areas in the previous classifications), and estimated divergence time and historical biogeography of the genus. Phylogenetic analyses supported that the subgenera Sorbus and Albo-carmesinae, as defined by traditional morphological characters (such as fruit color), are suitable. However, five clades defined by phylogenetic analysis of the genus are not consistent with traditionally defined sections or series. Molecular dating and biogeographic reconstruction showed that the age of the most recent common ancestor was estimated at 41mya (95% HPD: 49-35mya) in eastern Asia. Four dispersal events are assumed to explain the wide distribution of Sorbus in the temperate zone and diversification in the edges of Qinghai-Tibet Plateau (QTP). Species dispersed from eastern Asia to the Tianshan Mountains, North America and Europe during the Oligocene and Miocene period. We found that polyploidization occurred multiple times in the subgenus Albo-carmesinae, in the Tianshan Mountains, Himalayas, and H-D Mountains. Finally, we suggest that apomixis, polyploidization, and hybridization may have combined with the multistage uplifting of Himalayas and H-D Mountains (and the subsequent increases in geologic, ecological and climatic heterogeneity) to drive the striking species diversity of Sorbus in this region. Copyright © 2017 Elsevier Inc. All rights reserved.

  7. Reproductive biology of the Iberian species of Potentilla L. (Rosaceae

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    Guillén, Antonio

    2005-06-01

    Full Text Available Several processes related to the reproductive biology of the Iberian species of the genus Potentilla L. subg. Trichothalamus (Spreng. Rchb., Comarum (L. Syme and Fragariastrum (Heist. ex Fabr. Rchb. are studied. We provide data concerning compatibility, agamospermy and hybridization along with pollination and fruit dispersal. No agamospermy mechanisms were found in any of the taxa, nor were there signs of any hybridization, although potential signs of self-incompatibility were detected. Regarding to pollination, a marked tendency toward autogamy was observed in certain groups. Finally, some mechanisms for the release and dispersal of diaspores are described in relation to diaspore and flower receptacle morphology.Se exponen los resultados del estudio de algunos mecanismos de la biología reproductiva en las especies ibéricas de Potentilla L. subg. Trichothalamus (Spreng. Rchb., Comarum (L. Syme y Fragariastrum (Heist. ex Fabr. Rchb. Se aportan datos que afectan a la compatibilidad, agamospermia e hybridización a lo largo de las fases de polinización y dispersión del fruto. No se observaron mecanismos de agamospermia en ninguno de los táxones estudiados ni tampoco se comprobó hibridación alguna, aunque se detectaron signos potenciales de autoincompatibilidad. Relacionado con la polinización, se observó en ciertos grupos una clara tendencia a la autogamia. Se describen, por último, algunos mecanismos de liberación y dispersión de diásporas, que están relacionados con la morfología de la propia diáspora y del receptáculo floral.

  8. Bartonella quintana detection in Demodex from erythematotelangiectatic rosacea patients

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    Nathalia Murillo

    2014-12-01

    Full Text Available We report here the presence of Bartonella quintana in a demodex. Demodex are arthropods associated with acnea. Bartonella quintana was found by broad Spectrum 16rDNA PCR amplification and sequencing, and confirmed by specific PCR. Bartonella quintana may parasite several arthropods and not only lice.

  9. Bartonella quintana detection in Demodex from erythematotelangiectatic rosacea patients.

    Science.gov (United States)

    Murillo, Nathalia; Mediannikov, Oleg; Aubert, Jérome; Raoult, Didier

    2014-12-01

    We report here the presence of Bartonella quintana in a demodex. Demodex are arthropods associated with acnea. Bartonella quintana was found by broad Spectrum 16rDNA PCR amplification and sequencing, and confirmed by specific PCR. Bartonella quintana may parasite several arthropods and not only lice. Copyright © 2014 The Authors. Published by Elsevier Ltd.. All rights reserved.

  10. Diuretic Activity of Rubus idaeus L (Rosaceae) in Rats

    African Journals Online (AJOL)

    Erah

    291). Diuretic test. Diuretic activity was determined, following the methods of Kawashima [15], but with a minor modification. The rats (48) were fasted for 18 h with free access to drinking water, and then orally administered 30 ml/kg of bicarbonate.

  11. Exploring the Association Between Rosacea and Parkinson Disease

    DEFF Research Database (Denmark)

    Egeberg, Alexander; Hansen, Peter Riis; Gislason, Gunnar H

    2016-01-01

    ) adjusted for age, sex, socioeconomic status, smoking, alcohol abuse, medication, and comorbidity were estimated by Poisson regression models. RESULTS: A total of 5 404 692 individuals were included in the reference population; of these, 22 387 individuals (9812 [43.8%] women; mean [SD] age at diagnosis, 75...

  12. Diuretic Activity of Rubus idaeus L (Rosaceae) in Rats | Zhang ...

    African Journals Online (AJOL)

    Purpose: To evaluate the diuretic activity of Rubus idaeus L in experimental rats. Methods: Hot-water and methanol extract of three kinds of Rubus idaeus L. fruits were administered to experimental rats orally at a dose of 2 and 5 mg/kg. Hydrochlorothiazide (10 mg/kg) was used as positive control in study. The diuretic effect ...

  13. Development and Characterization of Microsatellite Markers in Prunus sibirica (Rosaceae

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    Hua-Bo Liu

    2013-03-01

    Full Text Available Premise of the study: Microsatellite loci were developed for Prunus sibirica to investigate genetic diversity, population genetic structure, and marker-assisted selection of late-blooming cultivars in the breeding of P. sibirica. Methods and Results: Using a magnetic bead enrichment strategy, 19 primer pairs were developed and characterized across 40 individuals from three P. sibirica wild populations and six individuals of P. armeniaca. The number of alleles per locus varied from three to 11 and the observed and expected heterozygosities ranged from 0.063 to 0.917 and 0.295 to 0.876, respectively, in the three P. sibirica wild populations. All primer pairs could be successfully amplified in six individuals of P. armeniaca. Conclusions: These microsatellite primer pairs should be useful for population genetics, germplasm identification, and marker-assisted selection in the breeding of P. sibirica and related species.

  14. Lupus miliaris disseminatus faciei: a distinctive rosacea-like syndrome and not a granulomatous form of rosacea.

    NARCIS (Netherlands)

    Scheur, van de M.R.; Waal, van der RI; Starink, T.M.

    2003-01-01

    BACKGROUND: Lupus miliaris disseminatus faciei is an eruption of discrete red-brown, dome-shaped papules, histologically characterized by epithelioid cell granulomas. The pathogenesis of the disorder remains controversial. OBJECTIVE: The authors discuss the place of lupus miliaris disseminatus

  15. Sobre um novo gênero neotrópico da subfamília Tanypodinae (Diptera, Chironomidae On a new neotropical genus of the subfamily Tanypodinae (Diptera, Chironomidae

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    Sebastião José de Oliveira

    1992-01-01

    Full Text Available A new neotropical genus and a new species of a non-biting midge for the subfamily Tanypodinae from Brazil are described. The new genus is near Tanypus Meigen, 1803 and Procladius Skuse, 1889, but differs of both by wings and male terminalia.

  16. Estudos anatômicos e histológicos sôbre a subfamília Triatominae (Heteroptera, Reduviidae: IX. parte: vaso deferente e mesadênias de Triatoma infestans

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    Rudolf Barth

    1958-07-01

    Full Text Available Neste trabalho descreve-se o aparelho condutor, do testículo até o ductus ejaculatorius, incluindo as glândulas anexas, do macho de Triatoma infestans. O vas deferens compõem-se de três regiões: a parte proximal do vas deferens; b vesícula seminalis; c parte distal do vas deferens com uma região glândular no ponto de saída da vesícula seminalis. As partes finais do vas deferens desembocam nos lados internos de dois ramos terminais do ductus ejaculatorius. O sistema das glândulas anexas consta de 4 mesadênias. Estas são glândulas vesiculares das quais duas são ragiócrinas e duas lipócrinas. A terceira e a quarta glândula possuem a mesma formação e função, enquanto que a primeira se difere profundamente da segunda. As secreções das glândulas misturam-se num hilo de onde o líquido passa ao ductus glandularum que o conduz ao ductus ejeculatorius. Êste possui nos seus ramos terminais uma glândula mesodérmica de natureza ragiócrina (mesadênia modificada em posição extremamente distal e uma origem ectedérmica (ectadênia modificada em posição extremamente proximal. As secreções são expulsas das vesículas glandulares por contração da musculatura das suas paredes. O transporte dos líquidos misturados, através do ductus glandularum, verifica-se por ondas peristálticas da musculatura da membrana peritoneal do próprio ducto. As glândulas não possuem válvulas. Um refluxo das secreções é evitado pelo turgor das células epiteliais dos canais condutores. O esperma, ao entrar no ductus ejaculatorius, recebe uma mistura de 5 diferentes secreções, na qual o mesmo diluido, formando, finalmente, uma suspensão. Os aspectos histológicos estão apresentados nas figuras.

  17. Estudos anatômicos e histológicos sôbre a subfamília Triatominae (Heteroptera, Reduviidae: VII. Estudo anatômico do ducto intestinal do Triatoma infestans

    Directory of Open Access Journals (Sweden)

    Dyrce Lacombe

    1957-05-01

    Full Text Available Devido à imprtãncia que certos Triatomíneos hematófagos representam na vida humana, continuarmos a série de estudos já iniciados em nosso laboratório sôbre seus organismos. É feito, no presente trabalho, a anatomia e microanatomai do aparelho digestivo de Triatoma infestans. Das três distintas regiões do duto intestinal estomodeo, mesêntero e proctodeo, a primeira e a terceira são de origem ectodérmica. A região do estomodeo é constituída pela faringe e esôfago; a do proctodeo pelo piloro, íleo e reto. A segunda, de origem endodérmica, consta promesêntero, postmesêntero e da zona de transição. A anatomia e a microanatomia do faringe já foi estudada minuciosamente por BARTH (1952. O esôfago possui numerosas dobras no seu interior revestida de fina cutícula. A musculatura longitudinal e circular acham-se representadas por feixes que, provàvelmente, trabalham, preistàlticamente, transportando o alimento. Não encontramos um proventrículo, de maneira que o esôfago está ligado diretamente à primeira parte endodérmica, isto é, ao promesêntero. No início do promesêntero existe a válvula cardíaca, que, juntamente com as dobras do fim do esôfago, impedem que haja um refluxo do alimento. Durante a alimentação, a parede do preomesêntero, que apresenta numerosas dobras, sofre uma dilatação, a fim de reter u'a maior quantidade de sangue. Entre promesêntero e postmesêntero há um pequeno esfíncter formado pelo aumento da musculatura e das dobras do epitélio. O postmesêntero alcança cinco vêzes mais que o tamanho total do corpo do inseto, e dispõe no abdome em curvas completas, que, muitas vêzes, se superpõem. O seu epitélio possue célula altas e estreitas, e forma muitas dobras para dentro do seu lume. Na parte apical as células possuem um rabdório. O postmesêntero termina após a válvula cardíaca situada atrás do desembocamento das quatro ampolas dos tubos de Malpighi. Entre postmesêntero e proctodeo está situada a zona de transição, que é constituída pelas ampolas dos tubos de Malpighi, válcula pilórica e zona clara de células cubóides. Os quatro tubos de Malpighi são longos, finos e simples formando emaranhados. As ampolas são dilatações das bases dos tubos de Malpighi. Apresentam sempre células características. A formação da válvula pilórica pode ser acompanhada na série de cortes de 27-44. O piloro é revestido, internamente, por fina cutícula, e sua hipoderme é sinsicial. No íleo temos dobras mais elevadas e maior quantidade de musculatura. O reto acha-se deslocado para a região dorsal do corpo devido ao aumento exagerado do aparelho copulador. As células de sua hipoderme são bem limitadas.

  18. Estudos anatômicos e histológicos sôbre a subfamília Triatominae (Heteroptera, Reduviidae: V parte: anatomia do testículo e espermiocitogênese do Triatoma infestans

    Directory of Open Access Journals (Sweden)

    Rudolf Barth

    1956-06-01

    Full Text Available Neste trabalho, faz-se o estudo das estruturas anatômica e histológica do testículo de Triatoma infestans. Da espermiogênese, descrevem-se apenas as fases que medeiam entre a formação dos espermiogônios e a dos espermídeos (espermiocitogênese. A espermiohistogênese bem como as anatomias do vas deferens e das glândulas anexas serão tratados na segunda parte dêste trabalho, já em preparo. O testículo de Triatoma infestans possui 7 folículos dos quais cada um se abre num vas efferens próprio, curto, desembocando êstes num único vas deferens geral. Na zona de transição entre vas efferens e vas deferens, encontra-se sempre um conjunto de massas tissulares que se estão necrosando em virtude da decomposição das paredes dos cistos. Em conseqüência, os feixes de espérmios são libertados e passam através do vas efferens para o vas deferens. As substâncias líquidas que então se formam, resultado da necrose, são reabsorvidas pelo epitélio do vas efferens, entrando novamente em circulação na hemolinfa; o epitélio possui um rabdório muito longo. A parte superior do conteúdo de cada folículo dispõe-se ao redor de grande célula apical cuja função principal deve ser a de uma atividade reguladora que está relacionada com a diferenciação das células do conjunto germinativo em espermiogônios primários e em núcleos das paredes dos cistos. Nos espermiogônios, serão verificadas 8 divisões de multiplicação, o que vai dar a formação de 256 espermiócitos, número êsse que depois das duas divisões de maturação, que se seguem, originará 1 024 espermídeos. Em seguida, são descritos os fenômenos que ocorrem durante a prófase e as duas divisões de maturação. Temos que admitir a existência de uma parasíndese. Pela formação das tétrades, pode-se concluir que a primeira divisão é reducional e a segunda equacional, existindo, pois, uma pré-redução. Triatoma infestans possui 22 cromosomas no espermiogônio, dos quais 2 são heterocromosomas, sendo X, o maior e Y, o menor, pois, por observações comparadas de oogônios, verificou-se que o grande está ausente, enquanto o pequeno existe em número duplo. Os autosomas da guarnição equatorial, reduzidos pela primeira e segunda divisões de maturação, podem ser distribuídos, quanto ao seu tamanho, em três grupos: 3 grandes (A,B e C, 2 médios (D e E e 5 pequenos (F, G, H, I e K. A, B e C, bem como os heterocromosomas, são heteropicnóticos, formando, tanto nos espermiogônios como nos espermiócitos, depois da sinapsis, um corpo de 8 valores, respectivamente de 5 valores, corpos êsses que permanecem fortemente condensados, mesmo quando os outros cromosomas se individualizam ou quando formam os cromosomas difusos. O estádio dos cromosomas é analisado e considerado como uma fase ativa durante o tempo do crescimento intensivo dos espermiócitos.

  19. Taxonomia da subfamília Corinninae (Araneae, Corinnidae nas regiões neotropical e neártica Taxonomy of the subfamily Corinninae (Araneae, Corinnidae in neotropical and neartic regions

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    Alexandre Bragio Bonaldo

    2000-11-01

    Full Text Available The subfamily Corinninae is characterized and diagnosed. Two synapomorphies are hypothesized for the subfamily, both regarding the male palpal reservoir, which is primarily coiled and presents a sclerotized distal sector. Seventeen genera are recognized, six of which are new: Abapeba (type species Corinna lacertosa Simon, Erendira (type species Corinna pallidoguttata Simon, Septentrinna (type species Corinna bicalcarata Simon, Simonestus (type species Diestus validus Simon, Tapixaua (type species T. callida sp. nov. and Tupirinna (type species T. rosae sp. nov.. The genera Creugas Thorell, Falconina Brignoli and Paradiestus Mello-Leitão are revalidated. Diestus Simon and Lausus Simon are newly synonymized with Corinna C. L. Koch. Chemmis Simon is included in the synonymy of Megalostrata Karsch. Hypsinotus L. Koch is removed from the synonymy of Corinna and included in the synonymy of Creugas. Thirteen new species are described: Septentrinna yucatan and S. potosi from Mexico; Tupirinna rosae from Venezuela and Brazil; Tapixaua callida from Brazil and Peru; Abapeba hoeferi, A. rioclaro, A. taruma, Corinna ducke, C. colombo, C. mourai, C. recurva and Parachemmis manauara from Brazil; Creugas lisei from Brazil, Argentina and Uruguay. Twenty seven species are redescribed. Fifty eight new combinations are presented: from Chemmis, Septentrinna steckleri (Gertsch; from Corinna, Abapeba abalosi (Mello-Leitão, A. cleonei (Petrunkevitch, A. echinus (Simon, A. grassima (Chickering, A. guanicae (Petrunkevitch, A. lacertosa (Simon, A. luctuosa (F. O. Pickard-Cambridge, A. lugubris (Schenkel, A. pennata (Caporiacco, A. kochi (Petrunkevitch, A. saga (F. O. Pickard-Cambridge, A. wheeleri (Petrunkevitch, Creugas annamae (Gertsch & Davis, C. apophysarius (Caporiacco, C. bajulus (Gertsch, C. bellator (L. Koch, C. bicuspis (F.O. Pickard-Cambridge, C. epicureanus (Chamberlin, C. falculus (F. O. Pickard-Cambridge, C. mucronatus (F. O. Pickard-Cambridge, C. navus (F. O. Pickard-Cambridge, C. nigricans (C. L. Koch, C. plumatus (L. Koch, C. praeceps (F. O. Pickard-Cambridge, C. silvaticus (Chickering, C. uncatus (F. O. Pickard-Cambridge, Erendira luteomaculatta (Petrunkevitch, E. pallidoguttata (Simon, E. subsignata (Simon, Falconina albomaculosa (Schmidt, F. crassipalpis (Chickering, F. gracilis (Keyserling, Megalostrata raptrix (L. Koch, Paradiestus egregius (Simon, P. giganteus (Karsch, P. penicillatus (Mello-Leitão, P. vitiosus (Keyserling, Septentrinna bicalcarata (Simon, S. paradoxa (F. O. Pickard-Cambridge, S. retusa (F. O. Pickard-Cambridge, Simonestus pseudobulbolus (Caporiacco, S. robustus (Chickering, S. semiluna (F.O. Pickard-Cambridge, Stethorrhagus maculatus (L. Koch and Xeropigo smedigari (Caporiacco; from Diestus, Corinna alticeps (Keyserling, C. kochi (Simon, Simonestus occidentalis (Schenkel, S. separatus (Schmidt and S. validus (Simon; from Lausus, Corinna grandis (Simon and Abapeba sicarioides (Mello-Leitão; from Medmassa, Corinna andina (Simon and C. venezuelica (Caporiacco; from Megalostrata, Erendira atrox (Caporiacco and Erendira pictitorax (Caporiacco; from Parachemmis, Tupirinna trilineata (Chickering. Five combinations are restaured: Corinna aenea Simon, Creugas cinnamius Simon, Creugas gulosus Thorell, Falconina melloi (Schenkel, Paradiestus aurantiacus Mello-Leitão. Twenty five new synonymies are proposed: Diestus altifrons Mello-Leitão with Corinna nitens (Keyserling; Corinna tomentosa Simon, C. tridentina Mello-Leitão, Hypsinotus flavipes Keyserling, H. humilis Keyserling and Xeropigo scutulatus Simon with Xeropigo tridentiger (O. Pickard-Cambridge; Corinna cribosa Mello-Leitão and C. stigmatica Simon with Falconina gracilis (Keyserling; Corinna casueta Chickering with SIMONestus separatus (Schmidt; Corinna abnormis Petrunkevitch, C. antillana BRYANT, C. consobrina Simon, C. inornata Kraus, C. nervosa F. O. Pickard-Cambridge, C. wolleboeki Banks, Creugas cetratus Simon, C. senegalensis Simon and Hypsinotus gracilipes Keyserling with Creugas gulosus Thorell; Chemmis frederici Simon, Delozeugma formidabile O. Pickard-Cambridge, D. mordicans O. Pickard-Cambridge, Megalostrata sperata Kraus and M. venifica KARSCH with Megalostrata raptrix (L. Koch; Megalostrata lohmanderi Caporiacco with Erendira atrox (Caporiacco; Corinna tenubra Chickering with Parachemmis fuscus Chickering. One new name, Creugas berlandi, is erected for Corinna bellatrix Schmidt. Males of Creugas cinnamius, Corinna kochi, Methesis semirufa Simon, Paradiestus aurantiacus, Septentrinna steckleri and Xeropigo smedigari, the females of Paradiestus giganteus, Septentrinna bicalcarata and the adult female of S. steckleri are described for the first time.

  20. Estudos anatômicos e histológicos sobre a subfamília Triatominae (Heteroptera, Reduviidae: Parte XXIII: o ovário de triatoma infestans

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    Rudolf Barth

    1973-01-01

    Full Text Available Descreve-se microanotômico e histologicamente o ovário de Triatoma infestans sob o ponto de vista de sua função. O ovário é do tipo meroístico-telotrófico. a túnica própria é uma membrana dupla, das quais a lamela interna isola o germário do filamento terminal. O estrato germinativo é limitado a uma zona estreita atrás do volumoso grupo de células nutridoras. Os oócitos, ainda dentro do estrato germinativo, percorrem os estados da prófase até a sinapses, cujos filamentos cromáticos se desintegram. Em todas as zonas do germário, todos os tipos de células são bem individualizadas, não se observa um índice de formação de sincício. Inicialmente, o epitélio folicular é composto de várias camadas de células mononucleadas. Com o crescimento do oócito o epitélio torna-se simples com células binucleadas em conseqüência de amitoses. O pedúnculo ovariolar possui uma glândula circular.Microanotomy and histology of the ovary of Triatoma infestans are described under the view point of its funcion. The ovary is of the meroistic-telotrophic type. The Tunica propria is a dobble membrane, the internal one divides the germarium from the therminal filament. The stratum germinativum is limited to a strait zone behind the volumous group of food cells. The oocytes, within the stratum germinativum, show the prophase figures up till the synapsis, when the cromatic filaments soon desintegrate. In all zones of the terminal chamber all types of cells are well individualized, there is no sign of syncytium to be found. In the beginning of formation the follicle epithelium is formed by some layers of cells with only one nucleus. During the growth of the oocyte, the epithelium shows only one layer of cells with two nuclei as consequence of an amitosis. The pedicel of the ovariolum has a circular gland.

  1. Salsola sp. A of Flora Zambesiaca from the coast of Mozambique is Caroxylon littoralis (Amaranthaceae subfam. Salsoloideae), hitherto only known from Madagascar

    DEFF Research Database (Denmark)

    Friis, Ib; Holt, Sune

    2017-01-01

    differs from most other species of Caroxylon in being a coastal, perennial species with opposite leaves and deviating anther appendages, and it does not develop a dorsal wing on the fruiting perianth. The fruit is an achene. The taxonomic position of C. littoralis should be clarified by the study of DNA...

  2. EVOLUCIÓN DE LA SOCIALIDAD, ESTRATEGIAS ALIMENTARIAS Y ANATOMÍA CRÁNEODENTAL EN LA SUBFAMILIA CANINAE Evolution of Sociality, Diet, and Craniodental Anatomy in the Subfamly Caninae

    Directory of Open Access Journals (Sweden)

    JOAO MUÑOZ-DURÁN

    2012-04-01

    Full Text Available Los carnívoros sociales afectan parámetros poblacionales, ecología, comportamiento, y probabilidades de especiación y extinción de presas y otros carnívoros simpátricos. Así, los carnívoros sociales pudieron influenciar la evolución de la estructura y organización de las comunidades ancestrales y modernas de mamíferos. Por tanto, es importante identificar qué especies de carnívoros fósiles pudieron ser sociales y establecer cuándo, dónde y bajo qué contexto ecológico evolucionaron. Para esto se requiere determinar si existe alguna asociación entre la variación en rasgos morfológicos, susceptibles de ser preservados en el registro fósil, y diferencias en niveles de socialidad en carnívoros actuales. El objetivo de este trabajo fue establecer si existe alguna asociación entre la variación de la conformación y propiedades mecánicas cráneodentales con diferencias en niveles de socialidad, hábitos alimentarios y sexo en cánidos modernos. Para esto utilizamos una muestra de 972 especímenes de 33 especies de cánidos. Los resultados indican que los cánidos sociales e hipercarnívoros presentan conformaciones y propiedades mecánicas que los diferencian del resto de especies de cánidos actuales, y que la variación morfológica de las regiones analizadas no está asociada con el sexo. Estos resultados sirven de base para determinar qué especies fósiles de la subfamilia Caniane pudieron ser sociales e hipercarnívoras. Los resultados también sugieren que la evolución de la sociabilidad está asociada con relaciones filogenéticas y depende de factores ecológicos, entre los últimos están abundancia de presas de gran tamaño y existencia de carnívoros simpátricos competidores.Social carnivores affect population parameters, ecology, behavior and speciation and extinction rates of their prey and other sympatric carnivores. Therefore, social carnivores may have influenced the evolution of the structure and organization of ancestral and modern mammal communities. Thus, it is important to identify what extinct carnivore species may have been social and to determine when, where and under which environmental contexts they evolved. The first step is to establish if there is an association between morphological traits, susceptible of being preserved in the fossil record, and differences in the degree of sociality of present day carnivores. The aim of this research was to establish if there is an association between variation in shape and variables related to mechanical properties of the skulls, and differences in sociality level, diet and sex in modern canids. The sample included 972 specimens of 33 canid species. We analyzed the shape of the lateral side of the cranium, zygomatic arch, dentary bone and mandibular corpus, as well as 20 variables related to mechanical properties of the skull. Results suggest that hypercarnivorous social canids have shapes and mechanical properties that are different from other modern canids. We found that morphological variation is not affected by sex. Results may be used to identify extinct Caninae species that were social and hypercarnivorous. Results also suggest that the evolution of sociality is dependent on phylogenetic relationships and ecological context, particularly the abundance of large prey and the presence of sympatric carnivores.

  3. Some aspects of the pollen morphology of the genus Sanguisorba L. (rosaceae)

    NARCIS (Netherlands)

    Reitsma, Tj.

    1967-01-01

    Eight species of the genus Sanguisorba L. were studied. Two distinct types could be recognized, viz., the Sanguisorba minor and the Sanguisorba officinalis type. Sanguisorba filiformis (Hooker fil.) Handell-Mazzetti appeared to be a transition between these two types.

  4. Some aspects of the pollen morphology of the genus Sanguisorba L. (Rosaceae)

    NARCIS (Netherlands)

    Reitsma, Tj.

    1967-01-01

    Eight species of the genus Sanguisorba L. were studied. Two distinct types could be recognized, viz., the Sanguisorba minor and the Sanguisorba officinalis type. Sanguisorba filiformis (Hooker fil.) Handell-Mazzetti appeared to be a transition between these two types.

  5. Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower.

    Science.gov (United States)

    Sanzol, Javier; Rallo, Pilar; Herrero, María

    2003-01-01

    While stigma anatomy is well documented for a good number of species, little information is available on the acquisition and cessation of stigmatic receptivity. The aim of this work is to characterize the development of stigma receptivity, from anthesis to stigma degeneration, in the pentacarpellar pear (Pyrus communis) flower. Stigma development and stigmatic receptivity were monitored over two consecutive years, as the capacity of the stigmas to offer support for pollen germination and pollen tube growth. In an experiment where hand pollinations were delayed for specified times after anthesis, three different stigmatic developmental stages could be observed: (1) immature stigmas, which allow pollen adhesion but not hydration; (2) receptive stigmas, which allow proper pollen hydration and germination; and (3) degenerated stigmas, in which pollen hydrates and germinates properly, but pollen tube growth is impaired soon after germination. This developmental characterization showed that stigmas in different developmental stages coexist within a flower and that the acquisition and cessation of stigmatic receptivity by each carpel occur in a sequential manner. In this way, while the duration of stigmatic receptivity for each carpel is rather short, the flower has an expanded receptive period. This asynchronous period of receptivity for the different stigmas of a single flower is discussed as a strategy that could serve to maximize pollination resources under unreliable pollination conditions.

  6. Inflorescences of Cliffortia L. (Rosaceae and related vegetative branch­ing patterns

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    A. C. Fellingham

    2003-12-01

    Full Text Available The inflorescence construction of eight species, representative of the types found in the 119 species of the rosaceous genus Cliffortia L. is described, based on stereo microscopic examination of fresh and dried specimens, combined with extensive field observations. In its simplest form the inflorescence is a reduced short shoot, bearing a lateral ebracteate flower and a potentially viable apical bud. Variations in the basic structure can be in the number of flowers, the mix of the sexes of the flowers and the number and type of short shoots as primary, secondary and tertiary axes. A high incidence of structural plasticity of the inflorescence occurs. This can be either throughout the development of the inflorescence or only at the onset of the vegetative stage. These changes occur in the short shoot(s constituting the axes of the inflorescence, causing either an increase in the length of the intemodes. apical proliferation of the axes or a combination of these two effects. A specific com­bination of changes is linked to a specific inflorescence type. The vegetative elements of the inflorescence thus modified, are retained as an integral part of the vegetative branching system, with extensive influence on the branching pattern. This can also result in the predominance of one sex over the other over time, so that an individual, initially of the one sex. can become one of the opposite sex by the end of the season. Erroneous interpretation of a single point in the process of sex change as if it is a permanent state of sexuality, led to the prev alent acceptance of dioecy as the norm for the genus. Monoecy with dichogamy (or herkogamy at inflorescence level was observed in this genus, as in many other wind-pollinated taxa.

  7. The genus Rubus (Rosaceae in South Africa. IV. Natural hybridiza­ tion

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    J. J. Spies

    1987-12-01

    Full Text Available The genus  Rubus L. is represented in southern Africa by the subgenera  Eubatus Focke and  Idaeobatus Focke. A combination o f morphological data, data on the reproductive systems of some collections and meiotic chromosome behaviour indicates that a hybrid swarm in the eastern Transvaal was formed subsequent to the hybridization between R. cuneifolius Pursh. taxon B (subgenus Eubatus and R. longepedicellatus (C. E. Gust. C. H. Stirton (subgenus Idaeobatus. Other examples of intra- and intersubgeneric hybridization were found during this study of the South African material. These instances, with examples found in the literature, indicate that the subgeneric subdivisions of Rubus are artificial. Three different methods were used to analyse the meiotic chromosome configurations. The genome relationship system of Alonso & Kimber (1981 and Kimber & Alonso (1981 and the modification of the binomial system of Jackson & Casey (1980 by Spies (1984 proved to be the most sensitive for distinguishing between alio-, segmental alio- and autoploids.

  8. Disomic segregation of microsatellites in the tetraploid Prunus serotina Ehrh. (Rosaceae)

    OpenAIRE

    Pairon, Marie; Jacquemart, Anne-Laure

    2005-01-01

    Tetraploid black cherry (Prunus serotina) is the only Prunus L. species that has commercial importance as a timber tree in North America and is well known in Europe for its invasive behavior. Inheritance studies have never been performed and it is not known whether the species is allo or autotetraploid. Six microsatellite nuclear markers were used to test the inheritance in progenies of controlled crosses. Inheritance was proven to be disomic at all loci and a typical diploid mendelian inheri...

  9. A survey of the Rubus species (Rosaceae described from the Canary Islands

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    Matzke-Hajek, Günter

    1999-06-01

    Full Text Available Taxonomy, nomenclatura and distribution of the bramble species (Rubus L., subgen. Rubus described from the Canary Islands are studied. Apart from the widespread Mediterranean R. ulmifolius Schott two species occur: R. bollei Focke (Syn.: R. canariensis Focke, R. suspiciosus Menezes and R. palmensis A. Hansen. The latter is not an endemic of La Palma as assumed by its discoverer, but is recorded for the first time also in Gran Canaria and Tenerife. Complete descriptions are provided, and illustrations of distinctive features often lacking in herbarium specimens are presented. Problems concerning the typification are discussed. Rubus x wolfredoi-wildpretii H. E. Weber nothospec. nov., the frequent hybrid between Rubus bollei and R. ulmifolius is described as new to science. Rubus bornmuelleri Focke from Gran Canaria is based on a specimen dubium and has to be deleted from the list of Canarían species.Se han estudiado la taxonomía, la nomenclatura y la distribución de las especies de zarzas (Rubus L., subgen. Rubus descritas de las Islas Canarias. Junto a Rubus ulmifolius Schott, especie muy frecuente en el Mediterráneo, se encontraron dos especies: R. bollei Focke (Syn.: R. canariensis Focke, R. suspiciosus Menezes y R. palmensis A. Hansen. Se incluyen descripciones completas e ilustraciones de algunas características relevantes y que no siempre se han observado en especímenes de herbario revisados. Además, se discuten problemas de tipificación y se describe como nuevo para la ciencia Rubus x wolfredoi-wildpretii H.E. Weber nothospec. nov., híbrido frecuente entre R. bollei y R. ulmifolius. R. bornmuelleri Focke de Gran Canaria debe ser excluido de la lista de las especies canarias, al estar basada su descripción en un specimen dubium.

  10. Changes in digestive enzyme activities during larval development of leopard grouper (Mycteroperca rosacea).

    Science.gov (United States)

    Martínez-Lagos, R; Tovar-Ramírez, D; Gracia-López, V; Lazo, J P

    2014-06-01

    The leopard grouper is an endemic species of the Mexican Pacific with an important commercial fishery and good aquaculture potential. In order to assess the digestive capacity of this species during the larval period and aid in the formulation of adequate weaning diets, this study aimed to characterize the ontogeny of digestive enzymes during development of the digestive system. Digestive enzymes trypsin, chymotrypsin, acid protease, leucine-alanine peptidase, alkaline phosphatase, aminopeptidase N, lipase, amylase and maltase were quantified in larvae fed live prey and weaned onto a formulated microdiet at 31 days after hatching (DAH) and compared with fasting larvae. Enzyme activity for trypsin, lipase and amylase were detected before the opening of the mouth and the onset of exogenous feeding, indicating a precocious development of the digestive system that has been described in many fish species. The intracellular enzyme activity of leucine-alanine peptidase was high during the first days of development, with a tendency to decrease as larvae developed, reaching undetectable levels at the end of the experimental period. In contrast, activities of enzymes located in the intestinal brush border (i.e., aminopeptidase and alkaline phosphatase) were low at the start of exogenous feeding but progressively increased with larval development, indicating the gradual maturation of the digestive system. Based on our results, we conclude that leopard grouper larvae possess a functional digestive system at hatching and before the onset of exogenous feeding. The significant increase in the activity of trypsin, lipase, amylase and acid protease between 30 and 40 DAH suggests that larvae of this species can be successfully weaned onto microdiets during this period.

  11. Anatomy of the floral nectaries of 9 species from subf. Pomoideae (Rosaceae

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    Elżbieta Weryszko-Chmielewska

    2013-12-01

    Full Text Available The nectaries anatomical features of nine species of Pomoideae subfamily Aronia melanocarpa Ell., Cotoneaster horizontalis Decne, C. praecox Vilm.-Andr., C. lucida Schlecht., Crataegus monogyna Jacq., C. coccinea L., C. crus-galli L., Sorbus aucuparia L., Sorbus intermedia Pers. were compared. The flower longitudinal sections by means of vibratome and semithin slides by use of ultramicrotome were made. The thickness of nectary epidermis, glandular layer and the structure of subglandular layer as well as the n,n of vascular bundles were studied. It was stated that the height of epidermis cells and the thickness of their wall were approximate in the most investigated taxons. Stomata occurred in the nectaries of all species. They were located on a level with the epidermis cells in Aronia and Sorbus genera, in small hollows in Cotoneaster and considerably below the level of epidermis cells in Crataegus. The thickness of glandular layer was approximate for each genera. Sorbus intermedia and the species of Crataegus genus wer distinguishable by the thickest nectaries. The concentration of brachysclereids occurred in subglandular tissue of Crataegus crus-galli and of Sorbus both species. Vascular bundles, stocking the nectary, mostly consisted of phloem and xylem, but in Aronia, Cotoneaster praecox and C. lucida only phloem was noticed. The dependence between thickness of glandular layer, studied anatomical features and the volume of secreted nectar is discussed.

  12. Vegetation of a Polylepis incarum forest (Rosaceae) in Lampa district, Puno, Peru

    NARCIS (Netherlands)

    Montesinos, D.B.; Pinto, A.; Farfán, D.F.B.; Galiano, Y.W.

    2015-01-01

    Se estudió la vegetación de los bosques de Polylepis incarum (Bitter) M. Kessler & Schmidt-Lebuhn en el anexo de Lamparaquen, en la provincia de Lampa, departamento de Puno en los años 2009 y 2014. Se determinaron 83 especies vasculares pertenecientes a 35 familias. En cuanto a las formas de

  13. Native Honey Bees Outperform Adventive Honey Bees in Increasing Pyrus bretschneideri (Rosales: Rosaceae) Pollination.

    Science.gov (United States)

    Gemeda, Tolera Kumsa; Shao, Youquan; Wu, Wenqin; Yang, Huipeng; Huang, Jiaxing; Wu, Jie

    2017-11-06

    The foraging behavior of different bee species is a key factor influencing the pollination efficiency of different crops. Most pear species exhibit full self-incompatibility and thus depend entirely on cross-pollination. However, as little is known about the pear visitation preferences of native Apis cerana (Fabricius; Hymenoptera: Apidae) and adventive Apis mellifera (L.; Hymenoptera: Apidae) in China. A comparative analysis was performed to explore the pear-foraging differences of these species under the natural conditions of pear growing areas. The results show significant variability in the pollen-gathering tendency of these honey bees. Compared to A. mellifera, A. cerana begins foraging at an earlier time of day and gathers a larger amount of pollen in the morning. Based on pollen collection data, A. mellifera shows variable preferences: vigorously foraging on pear on the first day of observation but collecting pollen from non-target floral resources on other experimental days. Conversely, A. cerana persists in pear pollen collection, without shifting preference to other competitive flowers. Therefore, A. cerana outperforms adventive A. mellifera with regard to pear pollen collection under natural conditions, which may lead to increased pear pollination. This study supports arguments in favor of further multiplication and maintenance of A. cerana for pear and other native crop pollination. Moreover, it is essential to develop alternative pollination management techniques to utilize A. mellifera for pear pollination. © The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  14. Chilocorus renipustulatus (Coleoptera: Coccinellidae) dominates predatory ladybird assemblages on Sorbus aucuparia (Rosales: Rosaceae)

    Czech Academy of Sciences Publication Activity Database

    Kula, E.; Nedvěd, Oldřich

    2011-01-01

    Roč. 108, č. 4 (2011), s. 603-608 ISSN 1210-5759 Grant - others:Ministry of Education of the Czech Republic(CZ) VZ MSM 6215648902; Ministry of Agriculture(CZ) QH82047 Institutional research plan: CEZ:AV0Z50070508 Keywords : Coccinellidae * Chilocorus renipustulatus * scale insect Subject RIV: EH - Ecology, Behaviour Impact factor: 1.061, year: 2011 http://www.eje.cz/scripts/viewabstract.php?abstract=1659

  15. Fruit Seeds of the Rosaceae Family: A Waste, New Life, or a Danger to Human Health?

    Science.gov (United States)

    Senica, Mateja; Stampar, Franci; Veberic, Robert; Mikulic-Petkovsek, Maja

    2017-12-06

    In fruit production seeds are mostly regarded as waste, but for plants they represent a beginning of new life. Seeds accumulate toxic or health-beneficial compounds, and the elucidation of their metabolic profile is especially important to people who consume the entire fruit, including the seeds. The present research quantifies the levels of bioactive compounds (phenolics and cyanogenic glycosides (CGG)) in fruit seeds of 35 cultivars belonging to 6 different fruit species. High-performance liquid chromatography and mass spectrophotometry were used to detect and identify the studied compounds. Significant differences in the content of individual bioactive compounds as well as their groups were recorded (p seeds, except pears, accumulated from 2- to 46-fold higher levels of CGG than phenolics. On average, seeds contained from 75.46 to 1648.14 μg/g phenolics and from 46.39 to 4374.31 μg/g CGG. The study also clarifies the new lethal dose for cyanogenic glycosides.

  16. Genecology of Holodiscus discolor (Rosaceae) in the Pacific Northwest, U.S.A.

    Science.gov (United States)

    Matthew E. Horning; Theresa R. McGovern; Dale C. Darris; Nancy L. Mandel; Randy Johnson

    2008-01-01

    An important goal for land managers is the incorporation of appropriate (e.g., locally adapted and genetically diverse) plant materials in restoration and revegetation activities. To identify these materials, researchers need to characterize the variability in essential traits in natural populations and determine how they are related to environmental conditions. This...

  17. Endosperm formation in aposporous Crataegus (Rosaceae, Spiraeoideae, tribe Pyreae): parallels to Ranunculaceae and Poaceae.

    Science.gov (United States)

    Talent, Nadia; Dickinson, Timothy A

    2007-01-01

    Apomixis in Crataegus is primarily aposporous and requires pollination. The embryo sac is of the Polygonum type. A combination of meiotically unreduced embryo sacs with apparently reduced pollen would violate the usual requirement for a 2 : 1 ratio of maternal to paternal contributions to the endosperm. We therefore investigated the origin of endosperm in seeds of sexual diploids and apomictic polyploids of the sister genera Crataegus and Mespilus. Flow-cytometric DNA measurements from embryo and endosperm in mature seeds were converted to ploidy levels using leaf-tissue information. The diploids had triploid endosperm. In c. 60% of seed from polyploids, one sperm apparently contributes to the endosperm, while 25% or more may involve two sperm. Additional results suggest that trinucleate central cells also occur. Fertilization of meiotically unreduced eggs is indicated. The ratio of maternal to paternal contributions to the endosperm in these apomictic Crataegus is not constrained to 2 : 1. They thus resemble some Sorbus (Pyreae) and very distantly related Ranunculus (Ranunculaceae). It is suggested that Paspalum (Poaceae) may have similarly flexible endosperm ploidy levels.

  18. Arboreal Coleoptera Associated with Leucosidea sericea (Rosaceae at the Golden Gate Highlands National Park

    Directory of Open Access Journals (Sweden)

    Schalk Louw

    1988-10-01

    Full Text Available An analysis was made of arboreal Coleoptera on Leucosidea sericea from the Golden Gate Highlands National Park in the north-eastern Orange Free State, Republic of South Africa. Five sites were selected from which samples were taken, using a beating technique, at equal intensity, during 13 consecutive months. A total of 117 species representing 35 families were recorded and allocated to four guilds, namely phytophages (47 species, predators (44 species, scavengers (16 species and tourists (10 species. This diversity is attributed to the structural complexity and range of the host plant. The scarcity of a large number of these species is primarily ascribed to a high seasonal turnover rate. Species diversity and numbers of individuals were found to vary between the different study sites and are attributed to the growth stage and condition of the host plant, as well as the effect of sun and shade on activity cycles and the choice of feeding levels.

  19. Characterization of Rosaceae tree species in a young Turkey oak-dominated coppice forest

    Directory of Open Access Journals (Sweden)

    Giulietti V

    2009-09-01

    Full Text Available First results of a trial carried out in an experimental area (“Comunità Montana Colline Metallifere”, Tuscany. After coppicing (winter 1998-1999, 77 Sorbus torminalis, Sorbus domestica and others valuable tree species were released on the whole of 220 standard trees per hectare. Aim of the present study was to estimate the opportunity to produce valuable timber from standards of sporadic tree species living into coppice forests. A research trial aimed at evaluating stem and crown quality as well as radial growth of standards after coppicing was carried out in an area 3 hectares wide. Wild service tree, Service tree and Turkey oak trees were analysed. Seven years after coppicing, the growth pattern of the different species, was also analysed by means of two structural transects. In the early phase after coppicing, root and stump suckers of both Sorbus species (especially Service tree are able to compete with Turkey oak sprouts as for height growth. In the following stage, the social regression of Sorbus trees is easily foreseeible because of the high competitive ability of Quercus. The good stem and crown shaping showed to be characters owned by a few Sorbus standards only. These were characterized as the largest-sized and early well-crown shaped trees. The same trees showed the highest dbh growth and developed few epicormic branches. A better targeted selection rule of valuable timber tree species to build up the standards’ stock is the recommended practice to improve forest biodiversity, as well as to create an economically important additional option to firewood, usually produced in these coppice forests.

  20. Paleoclimate effects and geographic barriers shape regional population genetic structure of blackbrush (Coleogyne ramosissima: Rosaceae)

    Science.gov (United States)

    Bryce A. Richardson; Susan E. Meyer

    2012-01-01

    Coleogyne ramosissima Torr. (blackbrush) is a dominant xerophytic shrub species in the ecotone between the warm and cold deserts of interior western North America. Amplified fragment length polymorphisms (AFLPs) were used to survey genetic diversity and population genetic structure at 14 collection sites across the species range. Analysis revealed significant...

  1. Microsatellite marker development for the coastal dune shrub Prunus maritima (Rosaceae).

    Science.gov (United States)

    Badgley, Emily M; Grubisha, Lisa C; Roland, Anna K; Connolly, Bryan A; Klooster, Matthew R

    2015-02-01

    • Microsatellite primers were developed in the beach plum, Prunus maritima, to investigate the genetic composition of remaining populations in need of conservation and, in future studies, to determine its relation to P. maritima var. gravesii. • Fourteen primer pairs were identified and tested in four populations throughout the species' geographic range. Of these 14 loci, 12 were shown to be polymorphic among a total of 60 P. maritima individuals sampled (15 individuals sampled from four populations). Among the polymorphic loci, the number of alleles ranged from two to 10 and observed heterozygosity of loci ranged from 0.07 to 0.93 among specimens tested. • These microsatellites will be useful in evaluating the population genetic composition of P. maritima and in developing approaches for further conservation and management of this species within the endangered coastal dune ecosystem of the northeastern United States.

  2. New Reports on Surface Flavonoids from Chamaebatiaria (Rosaceae), Dodonaea (Sapindaceae), Elsholtzia (Lamiaceae) and Silphium (Asteraceae)

    Science.gov (United States)

    Lipophilic exudates of one species each of Chamaebatiara and Elsholtzia, two species of Silphium and four Dodonaea species were analyzed for flavonoid aglycones. In addition to a number of well-known and widely distributed flavonoids, several very rare and one novel natural flavonol were isolated a...

  3. Diversity of the genus Polylepis (Rosaceae, Sanguisorbeae in the Peruvian Andes

    Directory of Open Access Journals (Sweden)

    Wilfredo Mendoza

    2011-08-01

    Full Text Available This study provides information on the diversity of Peruvian species of Polylepis. Nineteen (19 species are reported here (more than 70% of the 27 species registered for the whole Andean region. As a result, Peru could be considered as the country with the largest diversity of Polylepis species, in comparison with Bolivia (13, Ecuador (7, Argentina (4, Colombia (3, Chile (2, and Venezuela (1. The species occur in 19 departments of Peru, with the majority of them in Cusco (10 and Ayacucho (8. Species diversity is mostly concentrated in the Peruvian southern Andes (15 species, with the region becoming the potential center of diversification of the genus Polylepis. Regarding their altitudinal distribution, the greatest diversity (18 is found between 3000 and 4000 m.

  4. Granulomatous rosacea: Like leukemid in a patient with acute myeloid leukemia

    Directory of Open Access Journals (Sweden)

    Škiljević Dušan

    2008-01-01

    Full Text Available Introduction. Skin findings in leukemias may be divided into specific lesions (leukemia cutis and non-specific lesions (leukemids which may be found in up to 80% of all patients with leukemias. The leukemids vary clinically and they are usually a manifestation of bone marrow or immunologic impairment, but also Sweet syndrome, pyoderma gangrenosum, erythroderma, maculopapular exanthema, prurigo-like papules, generalized pigmentation, follicular mucinosis, generalized pruritus may be found during the course of leukemia. Case report. We report a 70-year-old male with a 3-month history of erythema, papules and pustules on the face, ears and neck and over a month history of refractory anemia, anorexia, weight loss, malaise, and fever. Physical examination revealed symmetric erythematous, violaceous papules, papulo-nodules and plaques with slate scale and sparse, small pustules on the face, earlobes and neck. Histopathologic findings of involved skin showed diffuse mixed inflammatory cell infiltrate with perifollicular accentuation and focal granulomatous inflammation in the papillary and upper reticular dermis. Extensive checkup revealed the presence of acute myeloid leukemia French- American-British (FAB classification subtype M2, with signs of three-lineage dysplasia. The patient was treated by L6 protocol which led to complete remission, both in bone marrow and skin, but after seven months he had relapse of leukemia with the fatal outcome. Conclusion. This case indicates the importance of skin eruptions in the context of hematological malignancies.

  5. Potentilla fulgens (Family Rosaceae), a medicinal plant of north-east India: a natural anthelmintic?

    Science.gov (United States)

    Roy, Bishnupada; Swargiary, Ananta; Syiem, D; Tandon, V

    2010-10-01

    The cestode parasite, Raillietina echinobothrida and the trematode, Gastrothylax crumenifer were exposed to the ethanolic root peel extract of Potentilla fulgens, an antiparasitic local medicinal plant of Meghalaya, India, to evaluate the anthelmintic efficacy of the plant. The parasites were incubated in 1, 5, 10, 20, 50 and 100 mg crude alcoholic extract per ml of phosphate buffered saline (PBS) at a temperature of 37 ± 1°C. Paralysis and death were observed at 2.00 ± 0.05 and 2.80 ± 0.06 h for the cestode and 1.21 ± 0.06 and 2.18 ± 0.04 h for the trematode parasites at the highest test concentration of the plant extract. The commercial anthelmintic, Praziquantel (PZQ) showed higher activity at the tested concentration (0.02 mg/ml). To further investigate the efficacy of the plant extract, vital tegumental enzymes of the parasite viz. Acid phosphatase (AcPase), Alkaline phosphatase (AlkPase) and Adenosine triphosphatase (ATPase) were studied. Quantitatively, the total enzyme activity of AcPase, AlkPase and ATPase was found to be reduced significantly by 69.20, 66.43 and 29.63% for R. echinobothrida and 47.96, 51.79 and 42.63% for G. crumenifer, respectively compared to the respective controls; histochemical study also showed reduction in the visible staining of the enzymes. The reference drug, PZQ also showed more or less similar effect like that of the plant extract. The result suggests that phytochemicals of P. fulgens have anthelmintic potential.

  6. A case of granulomatous rosacea | O'Mahony | South African Family ...

    African Journals Online (AJOL)

    A 49-year-old housewife had complained of an itchy facial rash for four years. She denied using steroid creams and skin lighteners. On examination, dark grey papules were found on her face, with some coalescing into plaques (see Figures 1 and 2). A skin biopsy revealed many perifollicular non-caseating granulomas ...

  7. Otophyma, Rhinophyma and Telangiectatic Rosacea – A Rare Combination in a Female Patient

    Directory of Open Access Journals (Sweden)

    Uwe Wollina

    2017-07-01

    CONCLUSION: Despite the preference of rhinophyma and otophyma to the male gender, their occurrence in females needs to be considers in the differential diagnosis of dermatoses of head and neck. Early diagnosis and appropriate medical treatment improve outcome and help to avoid surgery.

  8. Environ: E00473 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00473 Potentilla discolor herb Crude drug Potentilla discolor [TAX:648872] Rosacea...e (rose family) Potentilla discolor herb (dried) Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00473 Potentilla discolor herb ...

  9. Leaf and petiole anatomical characters of the genus Alchemilla (Rosaceae in Iran and their use in Numerical analysis

    Directory of Open Access Journals (Sweden)

    Marzieh Beygom Faghir

    2016-09-01

    A. pseudocartalinica, A. rechingeri, A. melancholica, A. hyrcana, A. microscopica and A. erythropoda, formation of 3 main groups and two subgroups. Our findings revealed that leaf and petiole anatomical characters are limited taxonomic value. The numerical analysis of these traits has disability in revealing the species relationship.

  10. Studies on non-traditional oils: l. Detailed studies on different lipid profiles of some Rosaceae kernel oils

    Directory of Open Access Journals (Sweden)

    Hassanein, Minar M. M.

    1999-10-01

    Full Text Available Kernel oils obtained from apricot, peach and plum, produced as by-products from food canning industry, were analyzed by capillary GC and HPLC. The fatty acid composition of the fractionated mono-, di- and triacylglycerol was elucidated. Oleic acid ranged from 64 to 72% in triacylglycerol (TAG, whereas linoleic acid ranged from 17% to 27%. The TAG profile showed the presence of 0 0 0 (35-42%, LOO (22-28%, LLO (7-16%, LOP and LLS (6-7%, OOP (6-10.4%. Campesterol-, 5-stigmasterol-, β-sitosterol-. isofucosterol, 7-stigmasterol and avenasterol were detected in the three analyzed oils. Sterylglycosides were also determined and showed some characteristic profiles. The three kernel oils contained appreciable amounts of tocopherols in which gamma-tocopherol was the predominating one. Alpha-and delta-tocopherols were also present in smaller quantities. Results obtained can be used to characterize these kernel oils and facilitate their differentiation from the other oils.

    Aceites obtenidos de las semillas de albaricoque, melocotón y ciruela, producidos como subproductos de la industria alimenticia conservera, se analizaron mediante cromatografía gaseosa capilar y cromatografía líquida de alta resolución. Se estableció la composición en ácidos grasos de los mono-, di- y triacilgliceroles fraccionados. El ácido oleico osciló desde el 64% al 72% en triacilgliceroles (TAG, mientras que el ácido linoleico lo hizo entre el 17% y el 27%. El perfil de TAG mostró la presencia de OOO (35-42%, LOO (22-28%, LLO (7-16%, LOP y LLS (6-7%, OOP (6-10.4%. En los tres aceites analizados se detectaron campesterol-, 5-estigmasterol, β-sitosterol-, isofucosterol, 7-estigmasterol y avenasterol. También se determinaron glicósidos de esteroles, mostrando perfiles característicos. El contenido en tocoferoles fue apreciable en todos ellos, siendo el gamma-tocoferol el predominante. Los alfa- y delta-tocoferoles se detectaron en pequeñas cantidades. Los resultados obtenidos pueden usarse para caracterizar estos aceites de semilla y facilitar su diferenciación de otros aceites.

  11. Leaf extrafloral nectaries enhance biological control of a key economic pest, Grapholita molesta (Lepidoptera: Tortricidae), in peach (Rosales: Rosaceae).

    Science.gov (United States)

    Mathews, Clarissa R; Brown, Mark W; Bottrell, Dale G

    2007-04-01

    Extrafloral nectaries (EFNs) in many plant species produce sugary secretions that commonly attract ants. This research determined the impact of peach (Prunus persica L. Batsch) EFNs on the biological control of the oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), a key economic pest in peach orchards, and studied interactions of EFNs and ants. Studies (2002-2005) in peach orchards of the mid-Atlantic United States showed that 'Lovell' peach trees with EFNs supported more parasitic Hymenoptera in the spring and increased the parasitism of G. molesta larvae later in the season than those trees without EFNs. Ant exclusion experiments revealed that trees with EFNs harbored fewer G. molesta larvae when ants were permitted access to the tree canopies. Furthermore, the trees with EFNs had approximately 90% less fruit injury by G. molesta, indicating that EFNs have a protective role for the fruit as well. The results show that the combined actions of ants and parasitic Hymenoptera confer an EFN-mediated protective effect spanning the whole fruit growing season. When EFNs are present, naturally occurring biological control agents can reduce damage by G. molesta in peach orchards without insecticide inputs. The EFNs are an important host-plant characteristic that should be retained in future peach cultivar selections as a means of enhancing biological control.

  12. Crataegus ×ninae-celottiae and C. ×cogswellii (Rosaceae, Maleae), two spontaneously formed intersectional nothospecies

    Science.gov (United States)

    Christensen, Knud Ib; Zarrei, Mehdi; Kuzmina, Maria; Talent, Nadia; Lin, Charlotte; Dickinson, Timothy A.

    2014-01-01

    Abstract Crataegus monogyna Jacq. is naturalized in North America, where it has hybridized with native diploid hawthorns at least twice. We provide names for the two nothospecies (as well as for the corresponding nothosections and nothoseries), referring to existing documentation in the literature for nothosp. nov. Crataegus ×ninae-celottiae K.I. Chr. & T.A. Dickinson (C. monogyna × C. punctata Jacq.). New data are provided to further document nothosp. nov. Crataegus ×cogswellii K.I. Chr. & T.A. Dickinson (C. monogyna × C. suksdorfii (Sarg.) Kruschke). In both cases, the striking differences in leaf shape between most New World hawthorns and Old World section Crataegus, and the intermediacy of the hybrids, account for the relative ease with which these hybrids can be recognized. Finally, new sequence data from ITS2 and chloroplast DNA barcoding loci confirm the genetic relationships between the two nothospecies and their respective parents. PMID:24843290

  13. Leaves of Cercocarpus mixteca n. sp. (Rosaceae) from Oligocene sediments, near Tepexi de Rodríguez, Puebla.

    Science.gov (United States)

    Velasco de León P; Cevallos-Ferriz

    2000-09-01

    A new species of Cercocarpus, Cercocarpus mixteca Velasco de León & Cevallos-Ferriz, is described based on leaf impressions from the Los Ahuehuetes locality, near Tepexi de Rodríguez, Puebla, Mexico. The lamina is obovate, 1.3cm in length by 0.5cm in width, has a serrate margin in its distal fourth, craspedodromous venation with a single straight mid-vein and two to four pairs of secondary ones, and areols that tend to be quadrangular in shape. A phenetic analysis of the agglomerative, non-hierarchical type, with mean linkage, is applied using 22 OTUs and 34 character states. The morphological characters observed on the leaves of the new fossil plants support the recognition of a new taxon closely related to the extant Cercocarpus paucidentatus growing naturally in northern Mexico. Its microphyll size corresponds with the temperate to xeric climate postulated for the Los Ahuehuetes locality; this further suggests that some taxa, like Cercocarpus, have a long history in low latitude North America. In this particular case, the extant Cercocarpus fothergilloides and Cercocarpus macrophyllus could, as they were able to colonise new humid and xeric areas, represent descendants of C. mixteca.

  14. DEPENDENCE OF VITAMIN CONTENT IN THE GEUM URBANUM AND GEUM RIVALE (GEUM, ROSACEAE ORGANS ON THE RHYTHM OF SEASONAL DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    T. V. Burchenko

    2017-01-01

    Full Text Available The aim of the research is to determine the optimal terms of the accumulation of vitamins by the organs of Geum depending on the rhythms of their seasonal development.Methods. The method for determining the vitamin C is based on the ability of ascorbic acid to change the color to blue in the acidic medium - 2,6 - dichlorophenolindophenol - to the leucoform, while ascorbic acid is oxidized to dehydroascorbic acid. Determination of vitamins A and E was carried out by reversed-phase high-performance liquid chromatography.Results. It was found that the highest indices of vitamin A and E in the leaves of G. urbanum and G. rivale are observed in July. In the rhizomes of avens, the maximum concentration of vitamins A and E is observed in March during their intensive growth, vitamin C in January. Decrease in the supply of rhizomes of plants with vitamins A and E continues in the autumn period, while for the vitamin C it is observed in the early spring. In the inflorescences, at the beginning of flowering, G. rivale L. and G. urbanum L. are characterized by the greatest content of vitamin A; by the end of flowering, vitamins E and C are accumulated more intensively.Conclusion. The leaves of wintering plants of G. urbanum L. and G. rivale L. continue to contain vitamins A, E, C despite low temperatures under snow cover and are not subject to significant destruction. During the winter rest period, the content of vitamin C in the roots reaches a maximum. 

  15. Herpetogramma bipunctalis (Lepidoptera: Crambidae biology and techniques for rearing on leaves of the blackberry (Rubus spp., Rosaceae

    Directory of Open Access Journals (Sweden)

    GI. Diez-Rodríguez

    Full Text Available The larvae of the southern beet webworm Herpetogramma bipunctalis (Fabricius, 1794 damage the leaves of species in the plant genus Rubus. The present study investigated the biology of H. bipunctalis and developed a protocol for raising H. bipunctalis under laboratory conditions. On the basis of the biological data, we devised a life table. In order to develop the rearing procedures, we determined which oviposition substrate and blackberry cultivar were the most appropriate for larval development. The mean durations of the egg, larval, and pupal stages were 5.59 days, 26.37 days, and 13.37 days, respectively, and the corresponding survival rates were 80.83%, 49.07%, and 83.23%. The mean pupal weight was 0.0491 g for males and 0.0536 g for females. The mean life cycle (egg-to-adult period was 45.33 days, and overall survival to adulthood was 33.01%. H. bipunctalis females laid a mean of 252.63 eggs over a mean of 13.60 days of oviposition; the mean pre-oviposition period was 2.67 days. Mean female and male life spans were 17.51 and 19.25 days, respectively, and the sex ratio was 0.51. The life-table data indicated that H. bipunctalis can reproduce 57.9 times per generation. Each cage contained one blackberry leaf placed on a paper towel. This method allowed us to obtain the greatest number of eggs. The larval stage was shorter for insects reared on leaves of the Guarani cultivar than for those reared on leaves of the Xavante cultivar (22.63 vs. 26.37 days. These basic data can aid in establishing strategies for the management of H. bipunctalis on blackberry farms.

  16. Herpetogramma bipunctalis (Lepidoptera: Crambidae) biology and techniques for rearing on leaves of the blackberry (Rubus spp., Rosaceae).

    Science.gov (United States)

    Diez-Rodríguez, G I; Hübner, L K; Antunes, L E C; Nava, D E

    2013-02-01

    The larvae of the southern beet webworm Herpetogramma bipunctalis (Fabricius, 1794) damage the leaves of species in the plant genus Rubus. The present study investigated the biology of H. bipunctalis and developed a protocol for raising H. bipunctalis under laboratory conditions. On the basis of the biological data, we devised a life table. In order to develop the rearing procedures, we determined which oviposition substrate and blackberry cultivar were the most appropriate for larval development. The mean durations of the egg, larval, and pupal stages were 5.59 days, 26.37 days, and 13.37 days, respectively, and the corresponding survival rates were 80.83%, 49.07%, and 83.23%. The mean pupal weight was 0.0491 g for males and 0.0536 g for females. The mean life cycle (egg-to-adult) period was 45.33 days, and overall survival to adulthood was 33.01%. H. bipunctalis females laid a mean of 252.63 eggs over a mean of 13.60 days of oviposition; the mean pre-oviposition period was 2.67 days. Mean female and male life spans were 17.51 and 19.25 days, respectively, and the sex ratio was 0.51. The life-table data indicated that H. bipunctalis can reproduce 57.9 times per generation. Each cage contained one blackberry leaf placed on a paper towel. This method allowed us to obtain the greatest number of eggs. The larval stage was shorter for insects reared on leaves of the Guarani cultivar than for those reared on leaves of the Xavante cultivar (22.63 vs. 26.37 days). These basic data can aid in establishing strategies for the management of H. bipunctalis on blackberry farms.

  17. Isolation of 16 Microsatellite Markers for Spiraea alpina and S. mongolica (Rosaceae of the Qinghai–Tibet Plateau

    Directory of Open Access Journals (Sweden)

    Gulzar Khan

    2014-01-01

    Full Text Available Premise of the study: A set of microsatellite markers were developed to characterize the level of genetic diversity and gene flow in two plant species endemic to the Qinghai–Tibet Plateau, Spiraea alpina and S. mongolica. Methods and Results: Using the Fast Isolation by AFLP of Sequences Containing repeats (FIASCO method, 16 microsatellite loci showed polymorphisms in both species. In two populations of each species, the number of alleles per locus ranged from three to 18 in S. alpina and from four to 30 in S. mongolica. Conclusions: These microsatellite markers provide an efficient tool for population genetic studies and will be used to assess the genetic diversity and spatial genetic structure of S. alpina and S. mongolica.

  18. Rosaceae-associated exercise-induced anaphylaxis with positive SPT and negative IgE reactivity to Pru p 3.

    Science.gov (United States)

    Bianchi, A; Di Rienzo Businco, A; Bondanini, F; Mistrello, G; Carlucci, A; Tripodi, S

    2011-08-01

    Food-dependent-exercise-induced anaphylaxis (FDEIA) is characterized by anaphylactic symptoms after exercise following ingestion of food. We present a case of FDEIA induced by Rosacee fruits showing some diagnostic problems. A 12 years-old boy with seasonal allergy to olive and cypressus pollens, experienced two distinct episodes of FDEIA, grade 4 and 3 of the Sampson Scale respectively, during intense exercise, about 30 minutes after eating a peach with peel or some cherries. SPT with commercial peach extract and fresh Rosacee fruits scored positive while SPT with a date palm profilin-enriched extract was negative. On in vitro tests total IgE were 44 kU/l and IgE for peach, cherry, Prup 3, Prup 1, Bet v 1, Bet v 2, Bet v 4 were negative. SPT with Prup 3 UniCAP device (cellulose polymer in a plastic reserve highly binding allergen protein) was negative. An oral food challenge, performed at rest using a commercial peach juice, scored negative. An immunoblot analysis performed with peach extract was negative. The main peculiarity of this case of FDEIA is the discrepancy between positive SPT and negative in-vitro findings. The positive SPT with the commercial peach extract suggested hypersensitivity to lipid transfer protein; however, no IgE reactivity to rPrup 3 was found in-vitro. The negative immunoblot analysis, possibly caused by the low levels of specific IgE, did not allow us to investigate the nature of the relevant allergen protein further. It is possible that this patient reacted to a different peach allergen or, alternatively, that he recognized an isoform of LTP that is different fr-om that in Uni-CAP. This case emphasizes once more the diagnostic relevance of SPT with extracts and fresh material to be performed before investigating IgE reactivity to single allergen components in-vitro.

  19. SEM and stereoscope microscope observations on the seeds of the Polish species of the genus Sorbus L. (Rosaceae

    Directory of Open Access Journals (Sweden)

    Irmina Maciejewska-Rutkowska

    2011-01-01

    Full Text Available This paper presents the results of the study on seed morphology of five Polish species of the genus Sorbus L. (S. aria (L. Crantz, S. aucuparia L. Emend. Hedl., S. chamaemespilus (L. Crantz, S. intermedia (Ehrh. Pers. and S. torminalis (L. Crantz. Observations and measurements were carried out with stereoscope and scanning microscopes. Four types of seed microsculpture were distinguished on the ground of SEM observations. The key to determine Polish species, based on morphological characters of seeds is given too.

  20. Vegetación de un bosque de Polylepis incarum (Rosaceae en el distrito de Lampa, Puno, Perú

    Directory of Open Access Journals (Sweden)

    Daniel B. Montesinos-Tubée

    2015-04-01

    Full Text Available Se estudió la vegetación de los bosques de Polylepis incarum (Bitter M. Kessler & Schmidt-Lebuhn en el anexo de Lamparaquen, en la provincia de Lampa, departamento de Puno en los años 2009 y 2014. Se determinaron 83 especies vasculares pertenecientes a 35 familias. En cuanto a las formas de vida, dominan las herbáceas, gramíneas, arbustos y árboles, siendo en su mayoría, nativas e endémicas, algunas introducidas. Se identificó el ecosistema queñoal representado por la nueva unidad fitosociológica Lupino chlorolepis-Polylepidetum incari con cuatro subasociaciones respectivamente. La composición florística demuestra una riqueza moderada-alta de especies, siendo las familias con mayor representatividad, Asteraceae, Poaceae, Caryophyllaceae, Fabaceae y Pteridaceae. Se aplicó el método fitosociológico de Braun-Blanquet para el análisis de unidades vegetativas. Se presenta la clasificación de comunidades mediante el software TWINSPAN, el análisis de ordinación DCA con el software CANOCO 4.5 y un dendrograma basado en correlación de especies para cada cuadrante efectuado con el software PC-ORD. Mayores estudios son aún necesarios para tener una visión más amplia de las comunidades de plantas en otras zonas geográficas, y evaluar como la vegetación puede verse afectadas con el cambio climático y acciones antrópicas.

  1. Elevational patterns of Polylepis tree height (Rosaceae in the high Andes of Peru: role of human impact and climatic conditions

    Directory of Open Access Journals (Sweden)

    Michael eKessler

    2014-05-01

    Full Text Available We studied tree height in stands of high-Andean Polylepis forests in two cordilleras near Cuzco (Peru with respect to variations in human impact and climatic conditions, and compared air and soil temperatures between qualitatively defined dry and humid slopes. We studied 46 forest plots of 100 m2 of five Polylepis species at 3560-4680 m. We measured diameter at breast height (dbh and tree height in the stands (1229 trees in total, as well as air and soil temperatures in a subset of plots. The data was analysed combining plots of given species from different sites at the same elevation (±100 m. There was no elevational decrease of mean maximum tree height across the entire data set. On humid slopes, tree height decreased continuously with elevation, whereas on dry slopes it peaked at middle elevations. With mean maximum tree heights of 9 m at 4530 m on the humid slopes and of 13 m at 4650 m on the dry slopes, we here document the tallest high-elevation forests found so far worldwide. These highest stands grow under cold mean growing season air temperatures (3.6 °C and 3.8 °C on humid vs. dry slopes and mean growing season soil temperatures (5.1 °C vs. 4.6 °C. Mean annual air and soil temperature both decreased with elevation. Dry slopes had higher mean and maximum growing season air temperatures than humid slopes. Mean annual soil temperatures did not significantly differ and mean annual air temperatures only slightly differed between slopes. However, maximum air temperatures differed on average by 6.6 K between dry and humid slopes. This suggests that the differences in tree height between the two slopes are most likely due to differences in solar radiation as reflected by maximum air temperatures. Our study furthermore provides evidence that alpine Polylepis treelines grow under lower temperature conditions than global high-elevation treelines on average, suggesting that Polylepis species may have evolved special physiological adaptations to low temperatures.

  2. An R2R3 MYB transcription factor associated with regulation of the anthocyanin biosynthetic pathway in Rosaceae (on linr)

    NARCIS (Netherlands)

    Wang, Kui-Lin; Bolitho, Karen; Grafton, Karryn; Kortstee, A.J.; Karunairetnam, Sakuntala; McGhie, T.K.; Espley, R.V.; Hellens, R.P.; Allan, A.C.

    2010-01-01

    Background - The control of plant anthocyanin accumulation is via transcriptional regulation of the genes encoding the biosynthetic enzymes. A key activator appears to be an R2R3 MYB transcription factor. In apple fruit, skin anthocyanin levels are controlled by a gene called MYBA or MYB1, while the

  3. Phylogeny and biogeography of pacific Rubus subgenus Idaeobatus (Rosaceae) species: Investigating the origin of the endemic Hawaiian raspberry R. macraei

    Science.gov (United States)

    Morden, C.W.; Gardner, D.E.; Weniger, D.A.

    2003-01-01

    The endemic Hawaiian raspberries Rubus hawaiensis and R. macraei (both subgenus Idaeobatus) had been thought to be closely related species until recent molecular studies demonstrated otherwise. These studies suggest that they are the products of separate colonizations to the Hawaiian Islands. Affinities of R. hawaiensis to R. spectabilis of western North America were clearly confirmed. However, no clear relation to R. macraei has been published. This study was initiated to examine species of subg. Idaeobatus from the surrounding Pacific region as well as species from other subgenera to better evaluate biogeographic and phylogenetic affinities of R. macraei by means of chromosome analysis and molecular data using the chloroplast gene ndbF. Results show that R. macraei clusters in a clade with species of blackberries, subg. Rubus, and of these it is most closely linked to R. ursinus. Chromosomally, R. macraei is 2n = 6x = 42, a number that would be a new report for subg. Idaeobatus. However, polyploidy is common in subg. Rubus. Analyses indicate that R. macraei and R. hawaiensis are derived from separate colonizations from North America and that similarities between them are due to convergent evolution in the Hawaiian environment.

  4. Elevational patterns of Polylepis tree height (Rosaceae) in the high Andes of Peru: role of human impact and climatic conditions.

    Science.gov (United States)

    Kessler, Michael; Toivonen, Johanna M; Sylvester, Steven P; Kluge, Jürgen; Hertel, Dietrich

    2014-01-01

    We studied tree height in stands of high-Andean Polylepis forests in two cordilleras near Cuzco (Peru) with respect to variations in human impact and climatic conditions, and compared air and soil temperatures between qualitatively defined dry and humid slopes. We studied 46 forest plots of 100 m(2) of five Polylepis species at 3560-4680 m. We measured diameter at breast height (dbh) and tree height in the stands (1229 trees in total), as well as air and soil temperatures in a subset of plots. The data was analyzed combining plots of given species from different sites at the same elevation (±100 m). There was no elevational decrease of mean maximum tree height across the entire data set. On humid slopes, tree height decreased continuously with elevation, whereas on dry slopes it peaked at middle elevations. With mean maximum tree heights of 9 m at 4530 m on the humid slopes and of 13 m at 4650 m on the dry slopes, we here document the tallest high-elevation forests found so far worldwide. These highest stands grow under cold mean growing season air temperatures (3.6 and 3.8°C on humid vs. dry slopes) and mean growing season soil temperatures (5.1 vs. 4.6°C). Mean annual air and soil temperature both decreased with elevation. Dry slopes had higher mean and maximum growing season air temperatures than humid slopes. Mean annual soil temperatures did not significantly differ and mean annual air temperatures only slightly differed between slopes. However, maximum air temperatures differed on average by 6.6 K between dry and humid slopes. This suggests that the differences in tree height between the two slopes are most likely due to differences in solar radiation as reflected by maximum air temperatures. Our study furthermore provides evidence that alpine Polylepis treelines grow under lower temperature conditions than global high-elevation treelines on average, suggesting that Polylepis species may have evolved special physiological adaptations to low temperatures.

  5. Dandruff: How to Treat

    Medline Plus

    Full Text Available ... Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious skin diseases Cosmetic treatments Dry / ... Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious skin diseases Cosmetic treatments Dry / ...

  6. Dandruff: How to Treat

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    Full Text Available ... partners Español Donate Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious skin diseases ... SPOT Skin Cancer™ Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious skin diseases ...

  7. Environ: E00442 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available Prunus japonica [TAX:97319] Rosaceae (rose family) Prunus humilis, Prunus japonica mature seed (dried) Crud...e drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00442 Prunus humilis, Prunus japonica seed ...

  8. Environ: E00832 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available Phenylethyl alcohol [CPD:C05853], Tannin, Organic acid Rosa gallica [TAX:74632] Rosaceae Rose flower Medicin...al herbs [BR:br08322] Dicot plants: rosids Rosaceae (rose family) E00832 Rose ...

  9. Environ: E00482 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00482 Photinia serrulata leaf Crude drug Photinia serrulata [TAX:140999] Rosaceae ...(rose family) Photinia serrulata leaf (dried) Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00482 Photinia serrulata leaf ...

  10. Environ: E00357 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available eta-glucoside, Apigenin-7-beta-glucoside Agrimonia pilosa [TAX:74656] Rosaceae (rose family) Agrimonia herb ...Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00357 Agrimonia herb ...

  11. Drug: D06893 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available akura [TAX:97325], Prunus verecunda [TAX:140663] Same as: E00190 Rosaceae (rose family) Prunus bark (dried) ...rugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) D06893 Cherry bark PubChem: 51091235 ...

  12. Environ: E00813 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available echin [CPD:C06562] Crataegus monogyna [TAX:140997] Rosaceae Hawthorn leaves, flower, fruit Medicinal herbs [BR:br08322] Dicot plants: rosids Rosaceae (rose family) E00813 Hawthorn ...

  13. Environ: E00662 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00662 Chaenomeles speciosa fruit Crude drug Chaenomeles speciosa [TAX:106546] Same as: D09192 Rosacea...e (rose family) Chaenomeles speciosa fruit (x-section, dried) Crude drugs [BR:br08305] Dicot plants: rosids Rosace

  14. Environ: E00623 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available 7], Prunus triloba [TAX:552838] Rosaceae (rose family) Prunus tomentosa, Prunus triloba mature seed (dried) ...Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00623 Prunus tomentosa, Prunus triloba seed ...

  15. Environ: E00833 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available 01579] Rosa canina [TAX:74635] Rosaceae Rose hip accessory fruit Major component: Ascorbate [CPD:C00072] [DR...:D00018] Medicinal herbs [BR:br08322] Dicot plants: rosids Rosaceae (rose family) E00833 Rose hip ...

  16. Environ: E00837 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00837 Raspberry Rubus chingii, Rubus crataegifolius, Rubus [TAX:23216] Rosaceae (r...ose family) Rubus aggregate fruit Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00837 Raspberry ...

  17. Dandruff: How to Treat

    Medline Plus

    Full Text Available ... and treatments Acne and rosacea Bumps and growths Color problems Contagious skin diseases Cosmetic treatments Dry / sweaty ... and treatments Acne and rosacea Bumps and growths Color problems Contagious skin diseases Cosmetic treatments Dry / sweaty ...

  18. Dandruff: How to Treat

    Medline Plus

    Full Text Available ... and rosacea Bumps and growths Color problems Contagious skin diseases Cosmetic treatments Dry / sweaty skin Eczema / dermatitis Hair ... and rosacea Bumps and growths Color problems Contagious skin diseases Cosmetic treatments Dry / sweaty skin Eczema / dermatitis Hair ...

  19. Dandruff: How to Treat

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    Full Text Available ... Meet our partners Español Donate Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious ... treat public SPOT Skin Cancer™ Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious ...

  20. Een vrouw met peri-orbitale zwelling

    NARCIS (Netherlands)

    van Rappard, Dominique C.; van der Linden, Mireille M. D.; Faber, William R.

    2012-01-01

    We present a 37-year-old woman with an 8-year history of rosacea, who developed persistent swelling of the right lower eyelid, diagnosed as Morbihan's disease. Morbihan's disease is considered a rare complication of rosacea

  1. Interactions between extrafloral nectaries, ants (Hymenoptera: Formicidae), and other natural enemies affect biological control of Grapholita molesta (Lepidoptera: Tortricidae) on peach (Rosales: Rosaceae).

    Science.gov (United States)

    Mathews, Clarissa R; Bottrell, Dale G; Brown, Mark W

    2011-02-01

    Extrafloral nectaries (EFNs) are reported to benefit some plants when ants (Hymenoptera: Formicidae) use their secretions and fend off herbivores, but in some cases resulting competitive interactions may reduce biological control of specific herbivores. This research examined the interactions between ants and other natural enemies associated with the EFNs of peach [Prunus persica (L.) Batcsh] and the implications for biological control of a key pest, the oriental fruit moth [Grapholita molesta (Busck)]. Studies using sentinel G. molesta placed on peach trees ('Lovell' cultivar) with EFNs present and absent revealed that several natural enemy groups associated with the EFNs contribute to reductions in G. molesta eggs, larvae, and pupae in peach orchards. Ants on trees with EFNs antagonized the G. molesta egg parasitoid Trichogramma minutum (Riley), but the ants were crucial in reducing G. molesta in both the larval and pupal stages. Overall, individual trees with EFNs experienced higher ant and other (nonant) natural enemy densities and subsequent pest reductions, as compared with trees without EFNs. However, the implications of EFN-natural enemy-pest interactions to orchard-level biological control will likely depend on local G. molesta population dynamics. © 2011 Entomological Society of America

  2. DIVERSIDAD LOCAL Y PRÁCTICAS AGRÍCOLAS ASOCIADAS AL CULTIVO TRADICIONAL DE DURAZNOS, PRUNUS PERSICA (ROSACEAE, EN EL NOROESTE DE ARGENTINA

    Directory of Open Access Journals (Sweden)

    D. Alejandra Lambaré

    2012-01-01

    Full Text Available Este trabajo constituye una aproximación etnobotánica a la diversidad de grupos y variedades locales de duraznos y los criterios para delimitar esos etnotaxones. Además, se describen las prácticas de manejo que acompañan la conservación de este cultivo en una comunidad del noroeste argentino. Se estableció una clasificación principal, denominada grupos de cultivariedades, la cual se define como el conjunto de variedades reunidas bajo un único nombre vulgar, resultado de la suma de atributos y diversos criterios definidos localmente. Asimismo, se estableció una subcategorización en etnovariedades definidas por características particulares. Este primer acercamiento evidencia el valor trascendental que adquiere la incorporación y apropiación de un recurso foráneo como elemento representativo del paisaje y del contexto sociocultural de la comunidad, el cual se expresa en el profundo conocimiento que poseen los pobladores para diseñar una clasificación e incorporar prácticas agrícolas asociadas a este cultivo.

  3. Reconstructing reticulation history in a phylogenetic framework and the potential of allopatric speciation driven by polyploidy in an agamic complex in Crataegus (Rosaceae).

    Science.gov (United States)

    Lo, Eugenia Y Y; Stefanović, Saša; Dickinson, Timothy A

    2010-12-01

    Polyploidy plays a prominent role in the speciation process in plants. Many species are known to be part of agamic complexes comprising sexual diploids and more or less exclusively asexual polyploids. However, polyploid formation has been studied in very few cases, primarily because of the challenges in examining these cases phylogenetically. In this study, we demonstrate the use of a variety of phylogenetic approaches to unravel origins and infer reticulation history in a diploid-polyploid complex of black-fruited Crataegus. The tree approaches are shown to be useful in testing alternative hypotheses and in revealing genealogies of nuclear genes, particularly in polyploid organisms that may contain multiple copies. Compared to trees, network approaches provide a better indication of reticulate relationships among recently diverged taxa. Taken together, our data point to both the autopolyploid and allopolyploid origins of triploids in natural populations of Crataegus suksdorfii, whereas tetraploids are formed via a triploid bridge, involving the backcross of allotriploid offspring with their diploid C. suksdorfii parent, followed by gene introgression from sympatric C. douglasii. Our findings provide empirical evidence for different pathways of polyploid formation that are all likely to occur within natural populations and the allopatric establishment of neopolyploids subsequent to their formation. © 2010 The Author(s). Evolution© 2010 The Society for the Study of Evolution.

  4. Crataegus ×ninae-celottiae and C. ×cogswellii (Rosaceae, Maleae, two spontaneously formed intersectional nothospecies

    Directory of Open Access Journals (Sweden)

    Knud Ib Christensen

    2014-04-01

    Full Text Available Crataegus monogyna Jacq. is naturalized in North America, where it has hybridized with native diploid hawthorns at least twice. We provide names for the two nothospecies (as well as for the corresponding nothosections and nothoseries, referring to existing documentation in the literature for nothosp. nov. Crataegus ×ninae-celottiae K.I. Chr. & T.A. Dickinson (C. monogyna × C. punctata Jacq.. New data are provided to further document nothosp. nov. Crataegus ×cogswellii K.I. Chr. & T.A. Dickinson (C. monogyna × C. suksdorfii (Sarg. Kruschke. In both cases, the striking differences in leaf shape between most New World hawthorns and Old World section Crataegus, and the intermediacy of the hybrids, account for the relative ease with which these hybrids can be recognized. Finally, new sequence data from ITS2 and chloroplast DNA barcoding loci confirm the genetic relationships between the two nothospecies and their respective parents.

  5. Evidence for genetic association between East Asian and western North American Crataegus L. (Rosaceae) and rapid divergence of the eastern North American lineages based on multiple DNA sequences.

    Science.gov (United States)

    Lo, Eugenia Y Y; Stefanović, Sasa; Christensen, Knud Ib; Dickinson, Timothy A

    2009-05-01

    Phylogeographic relationships were constructed for 72 Old and New World Crataegus species using combinations of four chloroplast and up to five nuclear regions. Maximum parsimony, maximum likelihood, and Bayesian results yield consistent relationships among major lineages. The close associations of the East Asian and western North American species point toward ancient trans-Beringian migrations. Relationships among eastern North American species are poorly resolved and few groups are identified that are congruent with existing classifications. Scant variation and short internal branches among these species suggest rapid divergence associated with polyploidy and hybridization. Incongruence between the chloroplast and nuclear data, and morphology suggest hybrid origins of three species from an extinct European lineage (the male parent) and three different North American female parents. Europe and eastern North America are suggested as the most recent common areas for Crataegus; at least four dispersal events are inferred to explain the present distribution of the genus.

  6. Genome-wide identification and expression analysis of NBS-encoding genes in Malus x domestica and expansion of NBS genes family in Rosaceae.

    Science.gov (United States)

    Arya, Preeti; Kumar, Gulshan; Acharya, Vishal; Singh, Anil K

    2014-01-01

    Nucleotide binding site leucine-rich repeats (NBS-LRR) disease resistance proteins play an important role in plant defense against pathogen attack. A number of recent studies have been carried out to identify and characterize NBS-LRR gene families in many important plant species. In this study, we identified NBS-LRR gene family comprising of 1015 NBS-LRRs using highly stringent computational methods. These NBS-LRRs were characterized on the basis of conserved protein motifs, gene duplication events, chromosomal locations, phylogenetic relationships and digital gene expression analysis. Surprisingly, equal distribution of Toll/interleukin-1 receptor (TIR) and coiled coil (CC) (1 ∶ 1) was detected in apple while the unequal distribution was reported in majority of all other known plant genome studies. Prediction of gene duplication events intriguingly revealed that not only tandem duplication but also segmental duplication may equally be responsible for the expansion of the apple NBS-LRR gene family. Gene expression profiling using expressed sequence tags database of apple and quantitative real-time PCR (qRT-PCR) revealed the expression of these genes in wide range of tissues and disease conditions, respectively. Taken together, this study will provide a blueprint for future efforts towards improvement of disease resistance in apple.

  7. Capricious, or tied to history’s apron strings? Floristic regions in north-west European brambles (Rubus subgenus Rubus, Rosaceae)

    NARCIS (Netherlands)

    Haveman, R.; Bijlsma, R.J.; Ronde, de I.; Schaminee, J.H.J.

    2016-01-01

    Aim
    To classify and describe distributional patterns in apomictic Rubus subgenus Rubus in north-west Europe and to characterize the major regions by statistically derived character species.

    Location
    North-western Europe, in particular Ireland, the United Kingdom, the Netherlands,

  8. Estudios sobre el género Prunas (Rosaceae en el Neotrópico: novedades taxonómicas y nomenclaturales para Colombia

    Directory of Open Access Journals (Sweden)

    Pérez-Zabala, Jorge A.

    2007-12-01

    Full Text Available As a part of the studies on neotropical Prunus, initiated with the taxonomic revision for Colombia, three new species are presented with complete descriptions and comments on taxonomy, chorology and conservation (P. antioquensis, P. littlei, and P. megacarpa. In addition, five taxa, whose description is based on material from Colombia, have been reduced to synonyms (P. betancurii, P. carolinae, P. ernestii, P. recurviflora and P. villegasiana and two lectotypes and one neotype are designated. For the newly cicumscribed species herein, diagnostic characters are annotated, synonyms are discussed and their geographical distribution commented upon.Como parte de los estudios del género Prunas para el Neotrópico iniciados con la revisión taxonómica para Colombia, se presentan descripciones completas, comentarios taxonómicos, corológicos y sobre aspectos de conservación de tres nuevas especies (P. antioquensis, P. littlei y P. megacarpa. Se reducen además a sinonimia cinco táxones descritos con base en material del país (P. betancurii, P. carolinae, P. ernestii, P. recurviflora y P. villegasiana y se designan dos lectótipos y un neótipo. Para las especies cuya circunscripción es precisada, se anotan los caracteres diagnósticos, se justifica la sinonimia y se comenta su distribución geográfica.

  9. Low-cost and eco-friendly green synthesis of silver nanoparticles using Prunus japonica (Rosaceae) leaf extract and their antibacterial, antioxidant properties.

    Science.gov (United States)

    Saravanakumar, Arthanari; Peng, Mei Mei; Ganesh, Mani; Jayaprakash, Jayabalan; Mohankumar, Murugan; Jang, Hyun Tae

    2017-09-01

    Low cost and eco-friendly green synthesis of silver nanoparticles (AgNPs) from silver nitrate (AgNO3) using Prunus japonica leaves extract as reducing agent by a simple method at room temperature. The biosynthesized nanoparticles (NPs) were characterized by UV-Vis, tunneling electron microscopy (HR-TEM), scanning electron microscopy (SEM) coupled with X-ray energy dispersive spectrophotometer (EDAX), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). In UV-Vis spectroscopy results, the λmax was observed at 441 nm. The AgNPs synthesized were spherical, hexagonal, and irregular in shapes. The EDAX and XRD spectrum confirmed the presence of silver ions and crystalline nature of synthesized AgNPs. FTIR showed the functional groups such as C = O, N-H and C-N groups involved in the reduction of Ag(+ )to Ag. 2, 2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay was performed and it showed the percentage inhibition in concentration-dependent manner. The synthesized AgNPs showed antibacterial activity against Escherichia coli, Proteus vulgaris, Staphylococcus aureus and Bacillus cereus to different extents and the higher activity was observed in Proteus vulgaris.

  10. DIVERSIDAD LOCAL Y PRÁCTICAS AGRÍCOLAS ASOCIADAS AL CULTIVO TRADICIONAL DE DURAZNOS, PRUNUS PERSICA (ROSACEAE), EN EL NOROESTE DE ARGENTINA

    OpenAIRE

    D. Alejandra Lambaré; M. Lelia Pochettino

    2012-01-01

    Este trabajo constituye una aproximación etnobotánica a la diversidad de grupos y variedades locales de duraznos y los criterios para delimitar esos etnotaxones. Además, se describen las prácticas de manejo que acompañan la conservación de este cultivo en una comunidad del noroeste argentino. Se estableció una clasificación principal, denominada grupos de cultivariedades, la cual se define como el conjunto de variedades reunidas bajo un único nombre vulgar, resultado de la suma de atributos y...

  11. The concept of the eudicot shoot apical meristem as it applies to four Spiraea (Rosaceae), one Mentha (Lamiaceae) and one Euonymus (Celastraceae) cultivars based on chimeric analysis.

    Science.gov (United States)

    Korn, Robert W

    2013-05-01

    Eversporting eudicots were sought to see if they behave like gymnosperms. Behaviour of eversporting gymnosperm chimeras indicates a single apical cell is present in SAM and it would be of interest to see if eudicot chimeras have the same behaviour. Four eversporting spireas, the pineapple mint and the Silver King euonymus were inspected for the fate of the yellow (mutant)-green (wild type) chimeras. As with gymnosperms, unstable eudicot chimeras in the four spireas, the pineapple mint and the Silver King euonymus became stable yellow about 80 % or more of the time and 20 % or less became stable green. The statistically significant preponderance of chimeric fates becoming all yellow suggests that a single apical cell resides in the yellow tunica. As with gymnosperms, descendent cells of the yellow replacement corpus cell eventually take over the corpus. Here is the first chimeric set of data to support the hypothesis of a one-celled meristem in eudicots rather than the traditional view of a muticellular meristem.

  12. Variabilidad ambiental y respuestas fisiológicas de Polylepis cuadrijuga (Rosaceae) en un ambiente fragmentado en el Páramo de la Rusia (Colombia)

    OpenAIRE

    Carolina Ramos; Buitrago, Sindy P.; Pulido, Karen L.; Leidy J. Vanegas

    2013-01-01

    Polylepis cuadrijuga es una especie leñosa endémica de la cordillera oriental de Colombia, donde la agricultura y el pastoreo han generado la fragmentación de sus bosques. Para determinar si existe un efecto borde en fragmentos ubicados en el Páramo de la Rusia, se establecieron diferencias ambientales y se evaluó las respuestas ecofisiológicas de P. cuadrijuga entre matriz de pastura, borde e interior de los fragmentos, a través de la medición de temperatura ambiental, humedad relativa, capa...

  13. Genome-wide identification and expression analysis of NBS-encoding genes in Malus x domestica and expansion of NBS genes family in Rosaceae.

    Directory of Open Access Journals (Sweden)

    Preeti Arya

    Full Text Available Nucleotide binding site leucine-rich repeats (NBS-LRR disease resistance proteins play an important role in plant defense against pathogen attack. A number of recent studies have been carried out to identify and characterize NBS-LRR gene families in many important plant species. In this study, we identified NBS-LRR gene family comprising of 1015 NBS-LRRs using highly stringent computational methods. These NBS-LRRs were characterized on the basis of conserved protein motifs, gene duplication events, chromosomal locations, phylogenetic relationships and digital gene expression analysis. Surprisingly, equal distribution of Toll/interleukin-1 receptor (TIR and coiled coil (CC (1 ∶ 1 was detected in apple while the unequal distribution was reported in majority of all other known plant genome studies. Prediction of gene duplication events intriguingly revealed that not only tandem duplication but also segmental duplication may equally be responsible for the expansion of the apple NBS-LRR gene family. Gene expression profiling using expressed sequence tags database of apple and quantitative real-time PCR (qRT-PCR revealed the expression of these genes in wide range of tissues and disease conditions, respectively. Taken together, this study will provide a blueprint for future efforts towards improvement of disease resistance in apple.

  14. [Environmental variability and physiological responses from Polylepis cuadrijuga (Rosaceae) in a fragmented environment in the Páramo de la Rusia (Colombia].

    Science.gov (United States)

    Ramos, Carolina; Buitrago, Sindy P; Pulido, Karen L; Vanegas, Leidy J

    2013-03-01

    Polylepis cuadrijuga is an endemic woody species from the Colombian Eastern range, being the only tree species with capacity to live on mountainous environments beyond 4 000m of altitude. Grazing and agriculture have transformed at least 30% of the Guantiva-La Rusia region, turning continuous extensions of high Andean forest in a fragmented landscape, and P cuadrijuga remnants have become smaller and more isolated. The aim of this study was to establish the environmental differences between a matrix of grazing pastures and the interior of fragments, to evaluate the physiological responses of P cuadrijuga and determining the edge effect. Air temperature and humidity, soil water holding capacity and photosynthetic active radiation, were measured along two 50X2m transects from the matrix toward the center of fragment. Six trees inside the transects were chosen in each one of three sites (matrix, edge and interior) to measure the index chlorophyll content and to sample leaves to assess the leaf area, leaf biomass, specific leaf area, anatomy, health condition and pubescence. Results showed significantly differences between the matrix and the interior and intermediate conditions in the edge. Radiation, temperature and air desiccation were higher in the matrix than in the interior, submitting P cuadrijuga trees to a stressing environment, where they presented stratification of epidermis and palisade parenchyma, and a higher leaf area, leaf thickness, chlorophyll content and pubescence than in the interior of fragments. All these physiological traits allow avoiding the photoxidation and damages by freezing or desiccation to which trees are exposed in a grazing pasture matrix. Nevertheless, there was a higher frequency of healthy leaves in the interior of fragments, showing that high irradiations and extreme air temperature and humidity reach adversely affect to P cuadrijuga. Individuals in the edge had ecophysiological traits similar to the matrix ones, which confirm an edge effect that could penetrate 17m inside the fragments. We conclude that P cuadrijuga is a plastic species, able to overcome the stress conditions from anthropogenic transformations, species able to be used in high Andean forest restoration programs

  15. Spontaneous occurrence and dispersion of Aronia ×prunifolia (Marshall Rehder (Rosaceae in Poland on the example of the "Bagna" bog complex near Chlebowo (western Poland

    Directory of Open Access Journals (Sweden)

    Zbigniew Celka

    2011-01-01

    Full Text Available This study presents information on a new to Poland synanthropic species - Aronia ×prunifolia (purple chokeberry.Purple chokeberry is cultivated worldwide as a fruit and decorative plant. In various regions of the world the process of its naturalisation outside the places of cultivation has been observed. In Europe, it is visible, among others, in Holland and Germany. In Poland, the first case was recorded in the "Bagna" bog complex near Chlebowo (Wielkopolska region. In this study, the distribution of Aronia ×prunifolia in Poland has been presented (square ATPOL BC67, BC68 as well as its spread and conditions of occurrence.

  16. Environ: E00741 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00741 Potentilla paradoxa herb Crude drug Potentilla paradoxa, Potentilla [TAX:23204] Rosacea...e (rose family) Potentilla paradoxa herb (cut) Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00741 Potentilla paradoxa herb ...

  17. Environ: E00755 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00755 Potentilla chinensis herb or root Crude drug Potentilla chinensis [TAX:210858] Rosacea...e (rose family) Potentilla chinensis herb or root (dried) Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00755 Potentilla chinensis herb or root ...

  18. Environ: E00492 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available E00492 Rosa rugosa flower bud Rosae rugosae flos Crude drug Rosa rugosa [TAX:74645] Rosacea...e (rose family) Rosa rugosa flower bud (dried) Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) E00492 Rosa rugosa flower bud ...

  19. Variabilidad ambiental y respuestas fisiológicas de Polylepis cuadrijuga (Rosaceae en un ambiente fragmentado en el Páramo de la Rusia (Colombia Environmental variability and physiological responses from Polylepis cuadrijuga (Rosaceae in a fragmented environment in the Páramo de la Rusia (Colombia

    Directory of Open Access Journals (Sweden)

    Carolina Ramos

    2013-03-01

    Full Text Available Polylepis cuadrijuga es una especie leñosa endémica de la cordillera oriental de Colombia, donde la agricultura y el pastoreo han generado la fragmentación de sus bosques. Para determinar si existe un efecto borde en fragmentos ubicados en el Páramo de la Rusia, se establecieron diferencias ambientales y se evaluó las respuestas ecofisiológicas de P. cuadrijuga entre matriz de pastura, borde e interior de los fragmentos, a través de la medición de temperatura ambiental, humedad relativa, capacidad de retención de agua del suelo y radiación fotosintéticamente activa, a lo largo de dos transectos de 50m desde la matriz hacia el interior. En cada sitio se escogieron seis árboles para evaluar el contenido de clorofila, área foliar, biomasa foliar, área foliar específica, anatomía foliar, sanidad y pubescencia. En matriz fue mayor la temperatura y la radiación, condiciones relacionadas con la disminución del AFE y el aumento del contenido de clorofilas, evidenciado por la presencia de un parénquima en empalizada biestratificado. Características ecofisiológicas similares a las expuestas en borde, confirman un efecto de borde que podría penetra unos 17m en el interior de los fragmentos. Se concluye que P. cuadrijuga es una especie plástica, capaz de enfrentar condiciones de estrés generadas por actividades antropogénicas.Polylepis cuadrijuga is an endemic woody species from the Colombian Eastern range, being the only tree species with capacity to live on mountainous environments beyond 4 000m of altitude. Grazing and agriculture have transformed at least 30% of the Guantiva-La Rusia region, turning continuous extensions of high Andean forest in a fragmented landscape, and P. cuadrijuga remnants have become smaller and more isolated. The aim of this study was to establish the environmental differences between a matrix of grazing pastures and the interior of fragments, to evaluate the physiological responses of P. cuadrijuga and determining the edge effect. Air temperature and humidity, soil water holding capacity and photosynthetic active radiation, were measured along two 50X2m transects from the matrix toward the center of fragment. Six trees inside the transects were chosen in each one of three sites (matrix, edge and interior to measure the index chlorophyll content and to sample leaves to assess the leaf area, leaf biomass, specific leaf area, anatomy, health condition and pubescence. Results showed significantly differences between the matrix and the interior and intermediate conditions in the edge. Radiation, temperature and air desiccation were higher in the matrix than in the interior, submitting P. cuadrijuga trees to a stressing environment, where they presented stratification of epidermis and palisade parenchyma, and a higher leaf area, leaf thickness, chlorophyll content and pubescence than in the interior of fragments. All these physiological traits allow avoiding the photoxidation and damages by freezing or desiccation to which trees are exposed in a grazing pasture matrix. Nevertheless, there was a higher frequency of healthy leaves in the interior of fragments, showing that high irradiations and extreme air temperature and humidity reach adversely affect to P. cuadrijuga. Individuals in the edge had ecophysiological traits similar to the matrix ones, which confirm an edge effect that could penetrate 17m inside the fragments. We conclude that P. cuadrijuga is a plastic species, able to overcome the stress conditions from anthropogenic transformations, species able to be used in high Andean forest restoration programs.

  20. Herpetogramma bipunctalis (Lepidoptera: Crambidae biology and techniques for rearing on leaves of the blackberry (Rubus spp., Rosaceae Biologia e técnica de criação de Herpetogramma bipunctalis (Lepidoptera: Crambidae em folhas de amoreira-preta (Rubus spp., Rosaceae

    Directory of Open Access Journals (Sweden)

    GI. Diez-Rodríguez

    2013-02-01

    Full Text Available The larvae of the southern beet webworm Herpetogramma bipunctalis (Fabricius, 1794 damage the leaves of species in the plant genus Rubus. The present study investigated the biology of H. bipunctalis and developed a protocol for raising H. bipunctalis under laboratory conditions. On the basis of the biological data, we devised a life table. In order to develop the rearing procedures, we determined which oviposition substrate and blackberry cultivar were the most appropriate for larval development. The mean durations of the egg, larval, and pupal stages were 5.59 days, 26.37 days, and 13.37 days, respectively, and the corresponding survival rates were 80.83%, 49.07%, and 83.23%. The mean pupal weight was 0.0491 g for males and 0.0536 g for females. The mean life cycle (egg-to-adult period was 45.33 days, and overall survival to adulthood was 33.01%. H. bipunctalis females laid a mean of 252.63 eggs over a mean of 13.60 days of oviposition; the mean pre-oviposition period was 2.67 days. Mean female and male life spans were 17.51 and 19.25 days, respectively, and the sex ratio was 0.51. The life-table data indicated that H. bipunctalis can reproduce 57.9 times per generation. Each cage contained one blackberry leaf placed on a paper towel. This method allowed us to obtain the greatest number of eggs. The larval stage was shorter for insects reared on leaves of the Guarani cultivar than for those reared on leaves of the Xavante cultivar (22.63 vs. 26.37 days. These basic data can aid in establishing strategies for the management of H. bipunctalis on blackberry farms.Lagartas de Herpetogramma bipunctalis (Fabricius, 1794 causam danos nas folhas da amoreira-preta (Rubus spp.. O objetivo deste trabalho foi estudar sua biologia e desenvolver uma técnica de criação, em condições de laboratório. Com os dados de biologia, foi elaborada uma tabela de vida de fertilidade. Para o estudo da técnica de criação, foram determinados o substrato para obtenção de ovos e a cultivar de amoreira-preta mais adequada para o desenvolvimento larval. A duração dos estágios de ovo, lagarta e pupa foram de 5,59, 26,37 e 13,37 dias, com sobrevivência de 80,83, 49,07 e 83,23%, respectivamente. O peso das pupas foi 0,0491 g para machos e 0,0536 g para fêmeas. O ciclo biológico (ovo-adulto foi de 45,33 dias, com sobrevivência total de 33,01%. As fêmeas colocaram, em média, 252,63 ovos durante 13,60 dias, com um período de pré-oviposição de 2,67 dias. A longevidade média de fêmeas e machos foi de 17,51 e 19,25 dias, respectivamente, e a razão sexual, de 0,51. Por meio da tabela de vida de fertilidade, determinou-se uma capacidade de aumento de 57,9 vezes a cada geração. Gaiolas revestidas com papel toalha e com a presença de folhas de amoreira-preta propiciaram a obtenção de uma maior quantidade de ovos. A duração do estágio larval para os insetos alimentados com folhas de amoreira-preta cv. Guarani (22,63 dias foi menor do que aqueles alimentados com folhas da cv. Xavante (26,37 dias. Estas informações são básicas e auxiliarão em futuros estudos, visando ao estabelecimento de estratégias de manejo de H. bipunctalis em amoreira-preta.

  1. Variabilidad ambiental y respuestas fisiológicas de Polylepis cuadrijuga (Rosaceae) en un ambiente fragmentado en el Páramo de la Rusia (Colombia) Environmental variability and physiological responses from Polylepis cuadrijuga (Rosaceae) in a fragmented environment in the Páramo de la Rusia (Colombia)

    OpenAIRE

    Carolina Ramos; Buitrago, Sindy P.; Pulido, Karen L.; Leidy J. Vanegas

    2013-01-01

    Polylepis cuadrijuga es una especie leñosa endémica de la cordillera oriental de Colombia, donde la agricultura y el pastoreo han generado la fragmentación de sus bosques. Para determinar si existe un efecto borde en fragmentos ubicados en el Páramo de la Rusia, se establecieron diferencias ambientales y se evaluó las respuestas ecofisiológicas de P. cuadrijuga entre matriz de pastura, borde e interior de los fragmentos, a través de la medición de temperatura ambiental, humedad relativa, capa...

  2. Evolutionary history of Arecaccea tribe Cocoseae inferred from seven WRKY transcription factors

    Science.gov (United States)

    The Cocoseae is one of 13 tribes of Arecaceae subfam. Arecoideae, and contains a number of palms with significant economic importance, including the monotypic and pantropical Cocos nucifera, the coconut, and African oil palm (Elaeis guineensis). Using seven single copy WRKY transcription factor gen...

  3. NCBI nr-aa BLAST: CBRC-GGOR-01-1322 [SEVENS

    Lifescience Database Archive (English)

    Full Text Available CBRC-GGOR-01-1322 gb|AAP44475.1| transient receptor potential cation channel subfam...ily M member 4 splice variant C [Homo sapiens] gb|EAW52460.1| transient receptor potential cation channel, subfamily M, member 4, isoform CRA_a [Homo sapiens] AAP44475.1 3e-28 87% ...

  4. Tectaria group

    NARCIS (Netherlands)

    Holttum, R.E.

    1991-01-01

    Polypodiaceae subfam. Dryopteridoideae section A, auct.: C. Chr. in Verdoorn, Man. Pteridol. (1938) 543, p.p. Aspidiaceae tribe Aspidieae auct.: Ching, Sunyatsenia 5 (1940) 250, excl. Lomariopsis and related genera. — Aspidiaceae, group of Ctenitis Copel., Gen. Fil. (1947) 153. Aspidiaceae auct.:

  5. Crotalaria trifoliolata (Leguminosae: Papilionoideae), a previously incompletely known Ethiopian endemic rediscovered after 120 years

    DEFF Research Database (Denmark)

    Friis, Ib; Weber, Odile

    2014-01-01

    The incompletely known Crotalaria trifoliolata Baker f. (Leguminosae subfam. Papilionoideae) has been rediscovered in the field. For 120 years, it has been known only from a fragmentary holotype with uncertain collecting locality. The habit and height of the plant, the pods and the seeds are here...

  6. Cleansers and their role in various dermatological disorders

    National Research Council Canada - National Science Library

    Mukhopadhyay, Partha

    2011-01-01

    ... into it. In dermatological disorders like acne, rosacea, atopic dermatitis, photoaging, 'sensitive skin', occupational dermatosis cleansers may have a beneficial role along with other therapeutic measures...

  7. Is demodex really non-pathogenic?

    National Research Council Canada - National Science Library

    Pena, G P; Andrade Filho, J S

    2000-01-01

    Although usually considered a non-pathogenic parasite in parasitological textbooks, Demodex folliculorum has been implicated as a causative agent for some dermatological conditions, such as rosacea...

  8. QTL list: [PGDBj Registered plant list, Marker list, QTL list, Plant DB link and Genome analysis methods[Archive

    Lifescience Database Archive (English)

    Full Text Available QT96022 Malus x domestica Rosaceae ... differential index of visible atmospherically ...resistant difference visible atmospherically resistant index between well water (irrigation) condition and w

  9. Serviceberry [Amerlanchier alnifolia (Nutt.) Nutt. ex. M. Roem(Rosaceae)] leaf exhibits mammalian alpha glucosidase activity and suppresses postprandial glycemic response in a mouse model of diet induced obesity/hyperglycemia

    Science.gov (United States)

    Several plant-based remedies offer cost-effective management of diabetes, but few plant species adapted to North America have been validated for their antidiabetic properties. One such species is serviceberry (Amelanchier alnifolia), found in Browning, MT, which has been traditionally used by the Am...

  10. 4'''-Acetylvitexin-2''-O-rhamnoside, isoorientin, orientin, and 8-methoxykaempferol-3-O-glucoside as markers for the differentiation of Crataegus monogyna and Crataegus pentagyna from Crataegus laevigata (Rosaceae).

    Science.gov (United States)

    Prinz, Sonja; Ringl, Alexandra; Huefner, Antje; Pemp, Enne; Kopp, Brigitte

    2007-12-01

    In our chemotaxonomic investigation of pharmaceutically relevant Crataegus species, the qualitative and quantitative flavonoid fingerprint of Crataegus monogyna and C. pentagyna is presented. Six flavonoids were identified as vitexin-2''-O-rhamnoside (1), vitexin (2), isovitexin (3), rutin (4), hyperoside (5), and isoquercitrin (6). Besides the verification of the main compounds isoorientin (7) and orientin (8) in C. pentagyna, further four flavonoids were isolated and identified as isoorientin-2''-O-rhamnoside (9), orientin-2''-O-rhamnoside (10), isovitexin-2''-O-rhamnoside (11), and 8-methoxykaempferol-3-O-glucoside (12) by means of 1D- and 2D-NMR, MS, and UV analyses. Compound 12 was isolated for the first time from C. pentagyna. In contrast to C. pentagyna, C. monogyna samples were predominated by 4'''-acetylvitexin-2''-O-rhamnoside (13), which was missing in C. pentagyna. Hence, 13 represents an interesting compound for chemotaxonomy of C. monogyna, whereas the main flavonoids 7, 8, and 12 could be proposed as markers for C. pentagyna. The absence of 7, 8, 12, and 13 in C. laevigata offers an appropriate tool for additional differentiation from C. monogyna and C. pentagyna, and for sample identification and quality control of the three main Crataegus species used in European phytotherapy.

  11. Potentilla ancistrifolia (Rosaceae на Дальнем Востоке России

    Directory of Open Access Journals (Sweden)

    T. A. Rubtsova

    2015-04-01

    Full Text Available Приводятся сведения о первой находке на территории России, в ЕАО, Potentilla ancistrifolia Bunge s. str. (типовая разновидность, уточняются отличительные признаки и данные о распространении ранее известных с Дальнего Востока близких к ней таксонов – P. ancistrifolia Bunge var. dickinsii (Franch. et Savat. Koidz. и P. tranzschelii Juz.

  12. The use of a topical compound cream product with Chitosan, Silver Sulfadiazine Bentonite hidrogel and Lactic acid for the treatment of a patient with Rosacea and ulcerated Livedoid Vasculopathy

    National Research Council Canada - National Science Library

    Tatu, Alin Laurentiu

    2015-01-01

    Introduction: The aims of this study were to investigate the use of a topical compound cream product with Chitosan, Silver Sulfadiazine, Bentonite hidrogel and Lactic acid for the treatment of a patient...

  13. Quality of life measurement in acne. Position Paper of the European Academy of Dermatology and Venereology Task Forces on Quality of Life and Patient Oriented Outcomes and Acne, Rosacea and Hidradenitis Suppurativa

    NARCIS (Netherlands)

    Chernyshov, P. V.; Zouboulis, C. C.; Tomas-Aragones, L.; Jemec, G. B.; Manolache, L.; Tzellos, T.; Sampogna, F.; Evers, A. W. M.; Dessinioti, C.; Marron, S. E.; Bettoli, V.; van Cranenburgh, O. D.; Svensson, A.; Liakou, A. I.; Poot, F.; Szepietowski, J. C.; Salek, M. S.; Finlay, A. Y.

    2017-01-01

    Acne causes profound negative psychological and social effects on the quality of life (QoL) of patients. The European Dermatology Forum S3-Guideline for the Treatment of Acne recommended adopting a QoL measure as an integral part of acne management. Because of constantly growing interest in

  14. The ammonoids from the Argiles de Teguentour of Oued Temertasset (early Late Tournaisian; Mouydir, Algeria

    Directory of Open Access Journals (Sweden)

    D. Korn

    2010-02-01

    Full Text Available The ammonoids from the Teguentour Shales (Tournaisian, Early Carboniferous of Oued Temertasset (Mouydir, Algeria are described monographically. The following new ammonoid taxa are introduced: Imitoceras dimidium n. sp., Imitoceras strictum n. sp., Triimitoceras tantulum n. sp., Acrocanites disparilis n. sp., Jdaidites cultellus n. sp., Pericyclus tortuosus n. sp., Pericyclus circulus n. sp., Pericyclus trochus n. sp., Pericyclus intercisus n. sp., Nodopericyclus n. gen., Nodopericyclus circumnodosus n. sp., Nodopericyclus deficerus n. sp., Ammonellipsites serus n. sp., Helicocyclus formosus n. sp., Helicocyclus inornatus n. sp., Helicocyclus laxaris n. sp., Ouaoufilalites creber n. sp., family Temertassetiidae n. fam., Temertassetia n. gen., Temertassetia temertassetensis n. sp., Temertassetia secunda n. sp., Temertassetia decorata n. sp., Temertassetia coarta n. sp., Jerania n. gen., Jerania jeranensis n. sp., Jerania sicilicula n. sp., Jerania pusillens n. sp., Jerania subvexa n. sp., Jerania persimilis n. sp., Kusinia n. gen., Kusinia falcifera n. sp., Bouhamedites insalahensis n. sp., Muensteroceras subparallelum n. sp., Muensteroceras multitudum n. sp., Follotites n. gen., Follotites folloti n. sp., Follotites stelus n. sp., Follotites flexus n. sp., family Rotopericyclidae n. fam., Eurites permutus n. sp., Eurites doliaris n. sp., Mouydiria n. gen., Mouydiria mouydirensis n. sp., Mouydiria scutula n. sp., Rotopericyclus kaufmanni n. sp., Rotopericyclus rathi n. sp., Rotopericyclus wendti n. sp., Rotopericyclus lubesederi n. sp., subfamily Dzhaprakoceratinae n. subfam., Dzhaprakoceras punctum n. sp., Dzhaprakoceras amplum n. sp., Dzhaprakoceras vergum n. sp., Dzhaprakoceras biconvexum n. sp., Progoniatitinae n. subfam., Progoniatites uncus n. sp., Progoniatites pilus n. sp., Progoniatites paenacutus n. sp., Progoniatites globulus n. sp., Habadraitinae n. subfam., Habadraites n. gen., Habadraites weyeri n. sp., Habadraites supralatus n. sp

  15. Caracteriza??o bioqu?mica e avalia??o da atividade antif?ngica de lectinas de sementes de Fabaceae da Amaz?nia

    OpenAIRE

    FERNANDES, Andreia Varmes

    2012-01-01

    Sementes de 50 esp?cies de Fabaceae da Amaz?nia com indiv?duos das subfam?lias Caesalpinioideae, Mimosoideae e Faboideae, foram analisadas quanto ? presen?a de novas lectinas. Os extratos totais foram ensaiados para a atividade hemaglutinante (AHE). Os extratos prot?icos de Anadenanthera peregrina, Dimorphandra caudata, Ormosia lignivalvis, Dioclea bicolor e fra??es prot?icas de Swartzia laevicarpa, Swartzia ingifolia e Swartzia longistipitata exibiram AHE com eritr?citos de coelho e, esta...

  16. Sinopse dos Chryxinae (Hemiptera, Reduviidae Synopsis of the Chryxinae (Hemiptera, Reduviidae

    Directory of Open Access Journals (Sweden)

    Hélcio R. Gil-Santana

    2007-03-01

    Full Text Available Uma sinopse da taxonomia dos Chryxinae com chaves para os gêneros e espécies da subfamília são apresentados. Chryxus bahianus sp. nov. e o macho de Wygodzinskyella travassosi (Lent & Wygodzinsky, 1944 são descritos.Synopsis of the Chryxinae with keys to the genera and species of the subfamily are presented. Chryxus bahianus sp. nov. and the male of Wygodzinskyella travassosi (Lent & Wygodzinsky, 1944 are described.

  17. Dandruff: How to Treat

    Medline Plus

    Full Text Available ... resources Meet our partners Español Donate Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious ... to treat public SPOT Skin Cancer™ Diseases and treatments Acne and rosacea Bumps and growths Color problems Contagious ...

  18. Environ: E00242 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available ba [TAX:267226], Rosa centifolia [TAX:396733] Same as: D05764 Rosaceae (rose family) fresh flower of rose Ob...tained by steam distillation Major component: Citronellol [CPD:C09849 C11386] Essential oils [BR:br08321] Dicot plants: rosids Rosaceae (rose family) E00242 Rose oil CAS: 8007-01-0 ...

  19. Environ: E00826 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available [CPD:C10788], Ascorbate [CPD:C00072] [DR:D00018] Rubus idaeus [TAX:32247] Rosaceae Raspberry leaf leaves Med...icinal herbs [BR:br08322] Dicot plants: rosids Rosaceae (rose family) E00826 Raspberry leaf ...

  20. Drug: D04331 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available e as: E00025 Therapeutic category: 2241 Rosaceae (rose family) Prunus armeniaca s...ents D04331 Apricot kernel water (JP16) Crude drugs [BR:br08305] Dicot plants: rosids Rosaceae (rose family) D04331 Apricot kernel water PubChem: 17398056 ...