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Sample records for apex cholesterol granuloma

  1. Cholesterol granuloma of the petrous apex: CT diagnosis

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    Lo, W.W.M.; Solti-Bohman, L.G.; Brackmann, D.E.; Gruskin, P.

    1984-12-01

    Cholesterol granuloma of the petrous apex is a readily recognizable and treatable entity that is more common than previously realized. Cholesterol granuloma grows slowly in the petrous apex as a mass lesion until it produces hearing loss, tinnitus, vertigo, and facial twitching. Twelve cases of cholesterol granuloma of the petrous apex are illustrated; ten of these analyzed in detail, especially with respect to CT findings. A sharply and smoothly marginated expansile lesion in the petrous apex, isodense with plain and nonenhancing on CT, is in all probability a cholesterol granuloma. Preoperative recognition by CT is important for planning proper treatment.

  2. Paraganglioma presenting as cholesterol granuloma of the petrous apex.

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    Heman-Ackah, Selena E; Huang, Tina C

    2013-09-01

    We report the unique finding of a petrous apex cholesterol granuloma associated with a paraganglioma, also known as a glomus jugulare tumor, in a 52-year-old woman who presented to our department with pulsatile tinnitus, hearing loss, aural fullness, and disequilibrium. She had been treated for a petrous apex cholesterol granuloma 20 years earlier, at which time she had undergone drainage of the granuloma via subtotal petrous apicectomy. When she came to our facility approximately 20 years later, she had signs and symptoms consistent with a jugular paraganglioma, which was likely to have been present at the time of her initial presentation for the cholesterol granuloma. In fact, microscopic bleeding from the paraganglioma might have led to the formation of the cholesterol granuloma. The metachronous presentation of these two entities, which to our knowledge has not been reported previously in the literature, indicates the potential association of paragangliomas with the formation of cholesterol granulomas of the petrous apex.

  3. Orbitofrontal cholesterol granuloma.

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    Chow, L P; McNab, A A

    2005-02-01

    Cholesterol granuloma of the orbital bones is a rare but readily recognisable condition. It is an osteolytic lesion with a granulomatous reaction surrounding cholesterol crystals, old haemorrhage and a fibrous capsule. There is a male preponderance and it usually occurs in young or middle-aged men. It is treatable with drainage and curettage via an orbitotomy, and craniotomy or wide bone removal is almost never required. Six cases of this condition were reviewed to highlight the typical clinical presentation, computed tomography and magnetic resonance results, and surgical management.

  4. A case of a cholesterol granuloma occluding the external auditory canal in a 12-year-old girl.

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    Kong, Ji Sun; Kim, Mee-Seon; Lee, Kyu-Yup

    2014-09-01

    Cholesterol granulomas are benign granulomatous lesions caused by tissue reaction to a foreign body such as cholesterol crystals. These crystals have been are associated with pathological conditions of pneumatized spaces, including those causing inadequate aeration, obstruction of drainage, and hemorrhage in pneumatized spaces, and where materials trapping materials, such as hemosiderin or cholesterol become trapped, and then forming a cholesterol granuloma. Cholesterol granulomas are frequently found in the temporal bones, with the middle ear, mastoid caverna, and petrous apex being the most commonly affected sites. As there have been few reported cases of cholesterol granulomas presenting as a mass in the external acoustic canal (EAC), a cholesterol granuloma occluding the entire EAC in a pediatric patient is considered quite rare. We encountered a large cholesterol granuloma occupying the entire EAC, resulting in total EAC occlusion in a 12-year-old girl. The granuloma was diagnosed via medical imaging and surgically excised.

  5. 内镜经鼻岩尖胆固醇肉芽肿手术治疗初步体会%Preliminary experience on endoscopic endonasal management of petrous apex cholesterol granuloma

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    王瑾; 陈雷; 杨静

    2015-01-01

    目的 探讨内镜经鼻入路治疗岩尖胆固醇肉芽肿的可行性.方法 回顾性分析解放军总医院2011-2014年间3例内镜经鼻入路手术治疗岩尖胆固醇肉芽肿患者的临床资料,分析总结其症状、体征、影像学特征、手术方法及预后.结果 3例患者均以耳鸣、听力下降为主要临床表现,平均听阈40 ~ 50 dBHL.行全麻内镜经鼻入路岩尖胆固醇肉芽肿切除手术后,3例患者耳鸣症状消失,平均听阈恢复至10~ 30 dBHL.术后随访6~45个月,1例引流口与蝶窦相通者形成永久性引流口,2例咽隐窝处造口者术后3~6个月引流口闭塞,但症状无复发.结论 内镜经鼻入路手术是治疗岩尖胆固醇肉芽肿的可行方法,近期疗效好,永久性造瘘口的维持需继续随访观察及大样本观察研究.%Objective To explore the feasibility and related aspects on endoscopic endonasal management of petrous apex cholesterol granuloma.Methods Retrospective data analysis was performed on 3 cases in which the endoscopic endonasal approach was used to manage this lesion between 2011 and 2014.Case information including radiological data,surgical technique,symptoms,and complications was reviewed.Results The main clinical manifestations in these 3 patients were tinnitus,hearing loss at the hearing threshold of 40-50 dBHL.After operation,all 3 patients showed disappearance of their tinnitus and improvement of the hearing threshold of 10-30 dBHL (follow-up 6-45 months).Permanent drainage route was performed in 1 case which communicated with sphenoid sinus.While the other 2 cases which drained to pharyngeal recess resulted in drainage route blocking within the 3-6 months after surgery,but without obvious symptoms.Condusions This procedure for the drainage of petrous apex cholesterol granuloma showed to be effective,safe and minimally invasive.Although there is no recurrence in short-term,however,long-term surveillance and large case series are necessary

  6. Cholesterol granuloma of the paratesticular tissue: A case report

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    Unal, Dursun; Kilic, Metin; Oner, Sedat; Erkinuresin, Taskın; Demirbas, Murat; Coban, Soner; Aydos, Mustafa Murat

    2015-01-01

    A 38-year-old man was admitted to our clinic with an enlarging right scrotal mass that had been present for 7 years. Right radical inguinal orchiectomy was performed and a histopathological diagnosis confirmed a very rare case of cholesterol granuloma of the paratesticular tissue. It can be very difficult to preoperatively distinguish testicular tumours from cholesterol granulomas of the testis or epididymis. Cholesterol granuloma should be kept in mind in patients with large and non-tender scrotal masses. PMID:26225185

  7. Neuropatía sensitiva trigeminal secundaria a granuloma de colesterol de la punta del peñasco del temporal Trigeminal neuralgia secondary to cholesterol granuloma of the petrous bone apex

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    M.A. Pons García

    2009-10-01

    Full Text Available La neuropatía aislada de la rama sensitiva del trigémino es una entidad poco habitual. Los pacientes suelen referir hipoestesia y /o disestesia generalmente a nivel de la segunda y tercera rama del trigémino, mientras que la neuralgia es muy infrecuente.¹ Su asociación con enfermedades sistémicas del tejido conectivo es bien conocida.² Se ha descrito asociada a distintas lesiones del SNC sobre todo tumores de fosa posterior o base de cráneo, así como neoplasias mandibulares.3,4 Presentamos una paciente con hipoestesia en el territorio V2-V3 asociada a dolor hemifacial paroxístico secundario a una lesión del peñasco del temporal.Trigeminal Neuralgia is an uncommon entity. The patients report hypoesthesia and/or dysesthesia of the second and third ramus of trigeminal nerve, while neuralgia is very rare.¹ Its association with systemic diseases of connective tissue is well know.² It has been described as being associated with different lesions of the central nervous system, especially with the posterior cavity or cranial base tumors, as well as jaw neoplasias.3,4 We presented a patient with hypoesthesia V2-V3 and hemi facial paroxysmal pain secondary to lesion of petrous apex of temporal bone.

  8. Cholesterol granuloma of temporal bone: CT and MR findings. Granulomas colesterinicos del hueso temporal: hallazgos por TC y RM

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    Ruiz Jauriguizuria, J.C.; Ferrero Collado, A.; Ereo Ealo, M.J.; Grande Icaran, D.

    1994-01-01

    Three cases of cholesterol granuloma of the left temporal bone are presented, two located in the petrous apex and the other at the otomastoid level. One of the patients had a history of mastoid surgery and the other surgery of the bone ridge. The three cases were confirmed histologically following surgical resection. The etiopathogenesis of the lesion is discussed, as are the clinical, histological and radiological features, with a broad description of the computed tomography and magnetic resonance findings. The differential diagnosis is also dealt with. (Author)

  9. Cholesterol granuloma of the right epididymis mimicking an acute scrotum

    Institute of Scientific and Technical Information of China (English)

    Borislav Spajic; Hrvoje Cupic; Goran Stimac; Ivica Brigic; Bozo Kruslin; Ognjen Kraus

    2006-01-01

    @@ Dear Sir, I am B. Spajic, the urologist from Clinical Department of Urology, Sestre Milosrdnice University Hospital,Zagreb, Croatia. Recently, we had a rare case of a cholesterol granuloma of the right epididymis at our department, showing clinical signs of acute scrotum. The case described here appears to be the second reporting cholesterol granuloma in the epididymis and the first one presenting with clinical signs of acute scrotum.

  10. Cholesterol granuloma in thyroglossal cysts: a clinicopathological study.

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    Shvili, Itzhak; Hadar, Tuvia; Sadov, Rima; Koren, Rumelia; Shvero, Jacob

    2009-11-01

    Thyroglossal duct cyst (TDC) is a congenital anomaly caused by retention of epithelial remnants from the descent of the thyroid gland during embryological development. Cholesterol granuloma represents a granulomatous reaction to precipitates of cholesterol crystals in tissue, usually related to middle-ear disease. The association of TDC with cholesterol granuloma has hardly been reported. This study describes five patients with TDC and cholesterol granuloma over a 16-year-period. The treatment consisted of excision of the TDC and the mid-portion of the hyoid bone and excision of a core of tissue between the hyoid bone and the foramen cecum (Sistrunk procedure). We speculate that the pathogenesis of cholesterol granuloma in TDC resembles that in the paranasal sinuses, as both sites provide a closed, poorly ventilated hollow structure with slow drainage. Our five patients accounted for 13% of all patients with TDC treated in our center during the same period, indicating that cholesterol granuloma in TDC may not be as rare as previously thought.

  11. Cholesterol Granuloma of the Frontal Sinus: A Case Report

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    Marco, Manola; Ida, Casorelli; Francesco Luigi, Pietrafesa; Giampiero, Mottola; Domenico, Lacerenza; Giuseppe, Battiloro; Giuseppe, Patitucci; Giulia Anna Carmen, Vita

    2012-01-01

    Cholesterol granulomas are common in the mastoid antrum and air cells of the temporal bone. In the paranasal sinuses, especially in the frontal sinus, they have occasionally been mentioned in the literature. The pathogenesis is unknown, but the majority of the authors support the concept of airway obstruction in the cells well pneumatised of temporal bone and paranasal sinuses. The authors report a case of cholesterol granuloma of the frontal sinus treated with radical surgical techniques, and they also recommend an endoscopic approach to frontal sinus to restore or enlarge the nose-frontal canal and promote drainage and ventilation of the frontal sinus. PMID:23150840

  12. Cholesterol Granuloma of the Frontal Sinus: A Case Report

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    Manola Marco

    2012-01-01

    Full Text Available Cholesterol granulomas are common in the mastoid antrum and air cells of the temporal bone. In the paranasal sinuses, especially in the frontal sinus, they have occasionally been mentioned in the literature. The pathogenesis is unknown, but the majority of the authors support the concept of airway obstruction in the cells well pneumatised of temporal bone and paranasal sinuses. The authors report a case of cholesterol granuloma of the frontal sinus treated with radical surgical techniques, and they also recommend an endoscopic approach to frontal sinus to restore or enlarge the nose-frontal canal and promote drainage and ventilation of the frontal sinus.

  13. Three cases of cholesterol granuloma in the mandible

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    Shin, Min Jung; Huh, Kyung Hoe; Yi, Won Jin; Moon, Je Woon; Choi, Soon Chul [Seoul National Univ. School of Dentitry, Seoul (Korea, Republic of); Shin, Jae Myung [Inje Univ. College of Medicine, Kimhae (Korea, Republic of)

    2007-12-15

    Cholesterol granuloma is an unusual clinical entity described as an inflammatory granulation in response to the deposit of cholesterol crystals. It can develop in any portion of air cells within the temporal bone as a result of a lack of aeration and inadequate drainage, especially in the middle ear cavity. Here, we report very unusual three cases of cholesterol granuloma developed in mandible. In the first case a 68-year-old male with a large mass arising from the mandible was observed. Panoramic radiograph and computed tomography scans revealed a huge expanding lesion in the mandible. In the second case a 47-years-old female with a cystic lesion in the mandible was observed. And in the third case a 19-year-old male complaining atypical facial pain had a large lesion in the mandibular ramous. The histopathologic examinations of the cases showed numerous cholesterol crystal surrounded by multinucleated foreign body giant cells.

  14. Cholesterol Granuloma in Odontogenic Cyst: An Enigmatic Lesion

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    Devi, Anju; Gupta, Shruti

    2016-01-01

    Cholesterol granuloma (CG) is the outcome of the foreign body type of response to the accumulation of cholesterol crystals and is frequently present in conjunction with chronic middle ear diseases. Recently, cases of CG in jaws have been reported, but still, very few cases have been found of CG in dental literature. This article presents three rare cases of CG in the wall of odontogenic cysts emphasizing on its possible role in expansion of the associated lesion and bone erosion. It also lays stress on the fact that more cases of CG should be reported so that its nature and pathogenesis in the oral cavity become more perceivable. PMID:28070428

  15. Cholesterol granuloma presenting as a mass obstructing the external ear canal

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    Psifidis Dimosthenis

    2010-04-01

    Full Text Available Abstract Background Cholesterol granuloma (CG may involve the middle ear, the mastoid bone and the petrous apex. However, CG presenting as a mass obstructing the external ear canal (EEC is relatively rare and it can be a diagnostic challenge. Case Presentation We report a case of a CG occupying the mastoid antrum and presenting as a mass into the EEC. Temporal bone computerized tomography showed a soft tissue mass which eroded the posterior-superior bony wall of the EEC. On magnetic resonance imaging, the mass revealed a high signal on both T1 and T2-weighted images. The CG was removed by a mastoidectomy procedure and the histopathologic report confirmed the diagnosis of CG. A type III tympanoplasty was performed. Conclusions The postoperative course was uneventful.

  16. Cholesterol granuloma associated with otitis media and leptomeningitis in a cat due to a Streptococcus canis infection.

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    Van der Heyden, Sara; Butaye, Patrick; Roels, Stefan

    2013-01-01

    Cholesterol granuloma in the middle ear is a pathological condition often associated with otitis media in humans. Cholesterol granulomas in cats are rarely described. To our knowledge, this is the first report of middle ear cholesterol granuloma in a cat, associated with otitis media and leptomeningitis due to a Streptococcus canis septicemia.

  17. Cholesterol granuloma associated with otitis media and leptomeningitis in a cat due to a Streptococcus canis infection

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    Van der Heyden, Sara; Butaye, Patrick; Roels, Stefan

    2013-01-01

    Cholesterol granuloma in the middle ear is a pathological condition often associated with otitis media in humans. Cholesterol granulomas in cats are rarely described. To our knowledge, this is the first report of middle ear cholesterol granuloma in a cat, associated with otitis media and leptomeningitis due to a Streptococcus canis septicemia.

  18. Cholesterol granuloma of the lateral ventricle. Case report.

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    Grossi, Peter M; Ellis, Michael J; Cummings, Thomas J; Gray, Linda L; Fukushima, Takanori; Sampson, John H

    2008-02-01

    Cholesterol granulomas (CGs) are benign lesions resulting from an inflammatory reaction to cholesterol and hemosiderin. These masses most often arise within the temporal bone or nasal sinuses; intracerebral CGs are extremely rare. In this report the authors present an unusual case of a CG arising within the lateral ventricle. The patient presented with transient hemiparesis and numbness. Computed tomography and magnetic resonance imaging demonstrated a cystic partially enhancing midline mass within the right lateral ventricle, expanding the ventricle and displacing the septum pellucidum. The patient underwent an interhemispheric, transcallosal resection of the lesion. Microscopic examination revealed a granulomatous inflammatory lesion containing cholesterol clefts, macrophages, and hemosiderin. Embedded within the granulomatous response were foci of tiny cystlike structures lined by nonciliated flattened cuboidal epithelium, consistent with the diagnosis of CG. To the authors' knowledge this is the first reported case of CG presenting as an intraventricular mass. The origin of this lesion is unclear, but it may relate to prior traumatic brain injury. The authors describe the presentation, imaging findings, histopathological characteristics, and surgical treatment of this rare lesion and related pathological entities.

  19. Tympanomastoid cholesterol granuloma: radiological and intraoperative findings of blood source connection.

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    Iannella, Giannicola; Stasolla, Alessandro; Pasquariello, Benedetta; Re, Massimo; Magliulo, Giuseppe

    2016-09-01

    The hypothesis that the close contiguity between the cholesterol granulomas and some rich blood sources provided the trigger to the aggressive nature of tympanomastoid cholesterol granulomas has been recently reported. To corroborate this new etiopathogenetic theory we retrospectively reviewed a series of 14 patients with primary middle ear and mastoid cholesterol granulomas and investigated the temporal bone marrow invasion and its hematopoietic potentialities and a possible cholesterol granulomas contiguity with relevant vascular structures such as the carotid artery, sigmoid jugular system, mastoid or dural vein. Eight cases did not show radiological sign of bone marrow invasion or hematopoietic potentialities visible in MRI. Besides no intraoperative vascular connections that could explain an initial bleeding source were found. Cholesterol granulomas bone marrow invasion was present in six patients. A bone marrow hematopoietic potentiality was showed in four of these patients, whereas, an evident anatomical contiguity of the cholesterol granuloma with some important temporal bone vascular structures was visible in five cases. Analysis of cardiovascular risk factors showed that four patients presented one or more of the risk factors analysed.

  20. A Retrospective Study on Cholesteatoma Otitis Media Coexisting with Cholesterol Granuloma

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    罗凌惠; 龚树生; 白广平; 汪吉宝

    2002-01-01

    Summary: To investigate the etiology and pathogenesis of cholesteatoma otitis media accompanied by cholesterol granuloma and the relationship between cholesteatoma and cholesterol granuloma, 63 cas-es of middle ear cholesterol granuloma treated in our hospital during the period from March 1988 to May 2000 were retrospectively reviewed. All cases were surgically and pathologically verified. 15 cas-es of cholesteatoma coexisting with cholesterol granuloma were found among the 63 patients. All 15 cases had a long-term history of otitis media, such as otorrhea (sanguine purulent otorrhea and blood-y otorrhea in 8 cases) and perforation of the eardrum (perforation of pars flaccida in 8 cases). Tem poral bone CT scans showed cholesteatoma in 11 cases. All patients were treated surgically, and cholesteatoma and cholesterol granuloma were found coexisting alternately, the latter lying mainly in the tympanic antrum, attic and mastoid air cells. Chocolate-colored mucus was accumulated in well developed mastoid air cells, and glistening dotty cholesterol crystals were also found. In most cases,enlarged aditus, destruction of lateral attic wall, erosion of ossicular chain, exposure of horizontal segment of facial nerve and tegmen of attic were observed. Occlusion of Eustachian tube was noted in 6 cases, and occlusion of tympanic isthmus was revealed in all cases. A post-operative dry ear was achieved in all patients, and hearing improvement was achieved in all 12 cases following tympanoplas-ty. Cholesteatoma and cholesterol granuloma in middle ear may share a common pathophysiological e-tiology: occlusion of ventilation and disturbance of drainage. The diagnosis should be considered when patients presented with chronic otitis media with bloody otorrhea. CT and magnetic resonance imaging are useful for the diagnosis before operation. The surgical approach depends on the location,extension and severity of the lesion, The purpose of surgery is to remove the lesion and create an

  1. The unusual ultrasound features of a breast cholesterol granuloma manifesting as an intracystic mass: case report and literature review.

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    Ahn, Hye Shin; Kim, Sun Mi; Yun, Bo La; Kim, Mi Sun; Jang, Mijung; Park, So Yeon; Kim, Sung-Won; Kang, Eunyoung; Choi, Hye Young

    2013-01-01

    Cholesterol granuloma of the breast is a rare, benign disease. Here, we present the unique ultrasonographic findings of breast cholesterol granuloma manifesting as an intracystic mass. The findings of this case report may help expand existing knowledge regarding differential diagnosis of intracystic breast masses, which are found on ultrasonographic examination.

  2. Compressive Optic Neuropathy Caused by Cholesterol Gran-uloma in the Posterior Ethmoid Sinus

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    Chun-Chih Lin; Ting-Kuang Chao; Tsu-Hua Chen; Jia-Kang Wang

    2015-01-01

    Purpose:.Cholesterol granuloma is usually associated with chronic middle ear disease..Involvement of the ethmoid sinus by cholesterol granuloma is rare..We describe a case with cholesterol granuloma of the posterior ethmoid sinus causing optic nerve compression..No previous reports were found in our review of the literature. Case report:.A 48-year-old man had impaired visual acuity and a relative afferent pupillary defect in the right eye. Fundus fluorescein angiography showed a swollen optic nerve head and optic disc leakage. Automated perimetry revealed a severe peripheral visual field defect with tunnel vision. Computerized tomography demonstrated an expansile,.isodense mass in the right posterior ethmoid sinus, remodeling of the bony walls of the right sphenoid sinus, and lateral displacement of the optic nerve in the right orbit..Compressive optic neuropathy caused by posterior ethmoid sinus lesion was diagnosed..A transnasal endoscopic exploration of the right ethmoid sinuses demon-strated a soft expansile cystic lesion with a thick yellow cap sule that filled the inside of the posterior ethmoid sinus. Brownish fluid with shiny crystals was drained by fine needle aspiration. The capsule was removed completely, and the mu-cociliary clearance of the sinus was reestablished..The patho-logic pictures confirmed the diagnosis of cholesterol granulo-ma, which included typical cholesterol clefts surrounded by inflammatory cells with focal multi-nucleated giant cells. Visu-al function fully recovered without recurrent lesions after a three-year follow-up. Conclusion:.Compressive optic neuropathy can be rarely caused by cholesterol granuloma in the posterior ethmoid si-nus. The visual prognosis may be good after transnasal endo-scopic decompression in such patients.

  3. Recurrent orbitofrontal cholesterol granuloma in pediatric patient: case report and review of the literature.

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    Khalatbari, Mahmoud Reza; Moharamzad, Yashar

    2012-02-01

    Orbitofrontal cholesterol granuloma is a rare entity which typically involves the lateral part of the supraorbital ridge. It causes progressive expansion and erosion of the inner and outer tables of the frontal bone. We describe a case of recurrent orbitofrontal cholesterol granuloma in a 17-year-old girl. In June 2002 this patient had originally presented to an eye clinic with a small palpable mass in the right superolateral orbit, limitation on upgaze, and progressive proptosis. MRI of the orbit revealed an intraorbital extraconal mass with smooth border, high signal on both T1- and T2-weighted magnetic resonance images. She underwent an anterior orbitotomy via a subbrow incision. The lesion was removed completely, and histopathological examination confirmed a cholesterol granuloma. She remained asymptomatic until her presentation in August 2005. On second admission (3 years later), she complained of a tender palpable mass in the superolateral aspect of the right orbit. Her right eye was 4 mm proptosed and 4 mm inferomedially displaced with limited elevation. The rest of the examination was normal. MRI of the orbit showed a large intraorbital but extraconal mass with smooth border, high signal on both T1- and T2-weighted images without enhancement after gadolinium injection. She underwent complete surgical excision by means of a bicoronal approach. Histopathological diagnosis revealed cholesterol granuloma. No recurrence of the lesion has been observed during the last 6 years following the second operation.

  4. [Cholesterol granuloma in paranasal sinus. An unfrequent pseudotumor in maxillary sinuses].

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    García de Hombre, Alina María; Pérez Peñate, Armando

    2005-01-01

    The cholesterol granuloma is well known in the middle ear, in the mastoid antrum and the air cells of temporal bone, mostly related to a chronic infectious process. There are other localizations such as the pleura, lung, pericardium, kidneys, arterial wall, nerves, brain, testicles, lymphatic ganglion and in the paranasals sinuses. Its localization in the mediofacial area is very unfrequent, having only been described 44 cases up to the year 2002. We present a 42 year-old patient, who required surgical treatment because of a increase in the volume of area her left facial of one month's old. It resulted to be secundary to an expansion of the maxilar sinus, such as seen on the computerized tomography carried out on the patient. The diagnosis was cholesterol granuloma, performed, through the anatomo-pathology study. We review the litterature on this subject and analyse the possible etiologic cause of this lesion, its clinic, diagnostic methodology and treatment.

  5. Java brucea and Chinese herbal medicine for the treatment of cholesterol granuloma in the suprasellar and sellar regions

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    Sun, Zhe; Cao, Yang; Zhai, Lin-zhu

    2017-01-01

    Abstract Rationale: A cholesterol granuloma (CG) is usually found in the middle ear, papilla, orbits, petrous apex, and choroid plexus, but is highly uncommon in the skull. In spite of benign clinicopathological lesions, bone erosion can be seen occasionally in the patient with CG. The optimal treatment strategy is radical surgery, but complete excision is usually impossible due to anatomical restrictions and a risk of injury to the key structures located nearby. Here, we report a patient with CGs in the suprasellar and sellar regions who was successfully treated with Java brucea and Chinese herbal medicine. Patient concerns: A 31-year-old man presenting with progressive decreased vision in both eyes was analyzed. Diagnoses: A skull magnetic resonance imaging (MRI) scan showed a low-density tumor in the uprasellar and sellar regions and histopathological examination revealed a CG. Interventions: The patient was referred the surgery and radiotherapy. In the meantime, brucea soft capsules and herbal medicine combined were administered to him. Outcomes: The related clinical symptoms and signs resolved significantly after several months, as his therapy progressed. The patient showed no sign of recurrence during the treatment period. Furthermore, he was still alive and disease-free at 37 months of follow-up visit. Lessons: Overall, brucea soft capsules and a Chinese herbal formula treatment combined could be beneficial in improving the patient's quality of life with CG in the skull. PMID:28151875

  6. Petrous apex lesions in the pediatric population

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    Radhakrishnan, Rupa [University of Cincinnati College of Medicine, Department of Radiology, Cincinnati, OH (United States); Cincinnati Children' s Hospital Medical Center, Department of Radiology, Cincinnati, OH (United States); Son, Hwa Jung [University of Cincinnati College of Medicine, Department of Otolaryngology-Head and Neck Surgery, Cincinnati, OH (United States); Koch, Bernadette L. [Cincinnati Children' s Hospital Medical Center, Department of Radiology, Cincinnati, OH (United States)

    2014-03-15

    A variety of abnormal imaging findings of the petrous apex are encountered in children. Many petrous apex lesions are identified incidentally while images of the brain or head and neck are being obtained for indications unrelated to the temporal bone. Differential considerations of petrous apex lesions in children include ''leave me alone'' lesions, infectious or inflammatory lesions, fibro-osseous lesions, neoplasms and neoplasm-like lesions, as well as a few rare miscellaneous conditions. Some lesions are similar to those encountered in adults, and some are unique to children. Langerhans cell histiocytosis (LCH) and primary and metastatic pediatric malignancies such as neuroblastoma, rhabomyosarcoma and Ewing sarcoma are more likely to be encountered in children. Lesions such as petrous apex cholesterol granuloma, cholesteatoma and chondrosarcoma are more common in adults and are rarely a diagnostic consideration in children. We present a comprehensive pictorial review of CT and MRI appearances of pediatric petrous apex lesions. (orig.)

  7. [Majocchi's granuloma].

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    Bonifaz, Alexandro; Tirado-Sánchez, Andrés; Ponce, Rosa María

    2008-01-01

    Majocchi's granuloma or dermatophytic granuloma is a mycosis observed among immunocompetent and immunocompromised patients caused by dermatophytes, particularly Trichophyton rubrum, which may be responsible for 50% of cases. The mechanism by which it occurs is yet unknown although reports suggest it may occur after localized trauma that alters the hair follicle and enables the entrance of the microorganism. Diabetes and the use of topical steroids are among some of the predispEl cuadro 1 no está acotado. Favor de hacerloEl cuadro 1 no está acotado. Favor de hacerloosing factors. Majocchi's granuloma has two clinical presentations, among immunocompetent patients it displays follicular papules and among immunocom-promised patients a subcutaneous nodular type is observed. Diagnosis is confirmed through histopathology, where granulomas and dermatophytes in the form of filaments or spores are observed in the mid and deep dermis. Treatment includes systemic antimycotics. We reviewed the etiopathogenic, clinical, histopathological and therapeutic aspects of Majocchi's granuloma.

  8. 胆脂瘤型中耳炎合并胆固醇肉芽肿的诊断和外科治疗%Diagnosis and surgical treatment on cholesteatoma otitis media coexisted with cholesterol granuloma

    Institute of Scientific and Technical Information of China (English)

    吕萍; 冯勃

    2012-01-01

    Objective To study the pathogenesis, clinical manifestations, diagnosis and treatment of cholesteatoma otitis media accompanying cholesterol granuloma and their relations. Methods Clinical data about 12 patients (12 ears) with cholesteatoma otitis media accompanying cholesterol granuloma diagnosed by surgery and pathology were retrospectively analyzed, including their clinical manifestations, CT scan of temporal bone, operation and follow-up. Results Of the 12 patients with recurrent otorpyorrhea, 4 had jam-like secretion, 3 had sanguine secretion, 1 had bloody secretion, and 4 had purulent secretion. Hearing disability was manifested as mild-severe conductive hearing loss or mixed deafness. Mastoid CT scanning showed destruction of bone and bone resorption, which underwent mastoidectomy or modified radical mastoidectomy plus hearing reconstruction. The patients were followed up for 1-2 years, during which no recurrence was observed. Conclusion Jam-like or bloody otopyorrhea is one of the key characteristics of cholesteatoma otitis media accompanying cholesterol granuloma and surgery is the chief choice of its treatment. Hearing is reconstructed depending on the condition of patients.%目的 探讨胆脂瘤型中耳炎合并胆固醇肉芽肿的病因、临床表现、诊治方法及二者的关系.方法 回顾性分析12 例(12耳) 经手术和病理诊断为胆脂瘤型中耳炎合并胆固醇肉芽肿患者的临床表现、颞骨CT 扫描、手术及随访资料.结果 12 例均有反复耳流脓,其中果酱样分泌物4 耳,脓血性分泌物3 耳,血性分泌物1 耳,脓性分泌物4 耳.听力损失为轻到重度传导性或混合性耳聋,乳突CT 扫描均有骨质破坏吸收,分别采用乳突根治术或改良乳突根治+ 听力重建术治疗,术后随访1-2 年无复发.结论 果酱样或脓血性耳溢液是胆脂瘤型中耳炎合并胆固醇肉芽肿的主要临床特征之一,治疗以手术为主,根据病变情况行听力重建.

  9. Lethal Midline Granuloma

    Directory of Open Access Journals (Sweden)

    Ghosh S.N

    1995-01-01

    Full Text Available Midline granuloma is a term with several synonyms: Stewart’s granuloma, granuloma gangraenescens nasi, lethal granuloma, polymorphous reticulosis 2-4 The conditiin is characterized by localized inflammation, destruction and often mutilation of tissues of the upper respiratory tract and face and, unless treated, it ends fatally within 12 to 18 months of onset. The pathological changes are those of nonspecific chronic inflammation to necrotizing vasculitis and granulomatosis. A case of lethal midline granuloma is reported.

  10. Cholestrol granuloma of the breast incidentally detected on dynamic abdominal CT: A case report

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Sun Hye; Lee, Eun Hye; Hong, Hyun Sook; Kwak, Jeong Ja [Soonchunhyang University College of Medicine, Bucheon Hospital, Bucheon (Korea, Republic of)

    2016-01-15

    A breast cholesterol granuloma is an uncommon nodular breast lesion. We incidentally detected a persistently enhancing breast mass on the dynamic abdominal computed tomography (CT) of a 78-year-old woman. The mass decreased in diameter over 50 days following a core needle biopsy. This report is the first to describe the dynamic-enhanced CT features of a breast cholesterol granuloma.

  11. Subcutaneous granuloma annulare

    Directory of Open Access Journals (Sweden)

    Dhar Sandipan

    1994-01-01

    Full Text Available Two cases of subcutaneos granuloma annulare are reported. Clinical presentation was in the form of hard subcutaneous nodules; histopathology confirmed the clinical diagnosis. The cases were unique because of onset in adult hood, occurrence over unusual sites and absence of classical lesions of granuloma annulare elsewhere.

  12. Subcutaneous granuloma annulare

    Directory of Open Access Journals (Sweden)

    Dhar Sandipan

    1993-01-01

    Full Text Available Two cases of subcutaneous granuloma annulare are reported. Clinical presentation was in the form of hard subcutaneous nodules, histopathology confirmed the clinical diagnosis. The cases were unique because of onset in adult age, occurrence over unusual sites and absence of classical lesions of granuloma annulare elsewhere.

  13. Petrous apex lesions outcome in 21 cases

    Directory of Open Access Journals (Sweden)

    Hekmatara M

    1997-09-01

    Full Text Available Petrous apex lesions of temporal bone progress slowly. Most of the time not only destruct this area but also involve neighbouring element. The symptoms of the neighbouring neuro-vasculare involvement we can recognize these lesions. The most common symptoms of involvement of the petrous apex are: headache, conductive hearing loss or sensorineural type, paresthesia and anesthesia of the trigeminal nerve, paresia and paralysis of the facial nerve, abducent nerve. In retrospective study which has been in the ENT and HNS wards of Amiralam hospital, 148 patients have been operated due to temporal bone tumor; from these numbers, 21 (13.6% patients had petrous apex lesions of temporal bone. Eleven (52.9% patients of these 21 persons were men and the remaining 10 (47-6% were women. The average age of the patients was 37 years. The common pathology of these patients were glomus jugulare tumors, hemangioma, schwannoma, meningioma, congenital cholesteatoma, giant cell granuloma. The kind of operations that have been done on these patients were: infratemporal, translabyrinthine and middle fossa approaches. The conclusion of this study shows that petrous apex area is an occult site. The symptoms of this lesion are not characteristic, meticulous attention to the history and physical examination are very helpful to recognition of these lesions and it's extention.

  14. Gingival plasma cell granuloma

    Directory of Open Access Journals (Sweden)

    Amitkumar B Pandav

    2012-01-01

    Full Text Available Plasma cell granuloma, also known as inflammatory pseudotumor is a tumor-like lesion that manifests primarily in the lungs. But it may occur in various other anatomic locations like orbit, head and neck, liver and rarely in the oral cavity. We here report an exceedingly rare case of gingival plasma cell granuloma in a 58 year old woman who presented with upper gingival polypoidal growth. The histopathological examination revealed a mass composed of proliferation of benign spindle mesenchymal cells in a loose myxoid and fibrocollagenous stroma along with dense infiltrate of chronic inflammatory cells predominantly containing plasma cells. Immunohistochemistry for kappa and lambda light chains showed a polyclonal staining pattern confirming a diagnosis of plasma cell granuloma.

  15. Gingival plasma cell granuloma

    Directory of Open Access Journals (Sweden)

    Phadnaik Mangesh

    2010-01-01

    Full Text Available Plasma cell granuloma is a rare reactive lesion composed of polyclonal plasma cells. It manifests primarily in the lungs, but may occur in various other anatomic locations like the oral cavity. Intraoral plasma cell granulomas involving the tongue, lip, oral mucosa and gingiva have been reported in the past. This case presents a 54-year-old female with chronic periodontitis and mandibular anterior gingival overgrowth treated by Phase I therapy (scaling and root planing and excisional biopsy. Histological examination revealed inflammatory cell infiltrate containing sheets of plasma cells. Immunohistochemistry for kappa and lambda light chains showed a polyclonal staining pattern confirming a diagnosis of plasma cell granuloma. This case highlights the need to biopsy for unusual lesions to rule out potential neoplasms.

  16. Mycotic bovine nasal granuloma.

    Science.gov (United States)

    Conti Díaz, Ismael Alejandro; Vargas, Roberto; Apolo, Ada; Moraña, José Antonio; Pedrana, Graciela; Cardozo, Elena; Almeida, Edgardo

    2003-01-01

    A case of mycotic bovine nasal granuloma in a 10 year-old Jersey cow, produced by Drechslera halodes is presented. Histopathological sections showed abundant hyaline and pigmented extra and intracellular fungal structures together with a polymorphic cellular granuloma formed by neutrophils, lymphocytes, plasmocytes, histiocytes and giant cells of the Langhans type. It is the first case of mycotic bovine nasal granuloma recognized in Uruguay although this disease seems to be frequent according to the opinion of veterinarian specialists. Another similar clinical case also in a Jersey cow from the same dairy house with an intense cellular infiltrate rich in eosinophils without granulomatous image, together with extracellular hyaline and fuliginous fungal forms, is also referred for comparative purposes. Geotrichum sp. was isolated. The need of an early diagnosis and treatment of the disease is stressed.

  17. Learning Apex programming

    CERN Document Server

    Kaufman, Matt

    2015-01-01

    If you are a developer who has some object-oriented programming experience, Learning Apex Programming is the perfect book for you. This book is most appropriate for developers who wish to gain an understanding of the Force.com platform and how to use Apex to create business applications.

  18. Electronic apex locators.

    Science.gov (United States)

    Gordon, M P J; Chandler, N P

    2004-07-01

    Prior to root canal treatment at least one undistorted radiograph is required to assess canal morphology. The apical extent of instrumentation and the final root filling have a role in treatment success, and are primarily determined radiographically. Electronic apex locators reduce the number of radiographs required and assist where radiographic methods create difficulty. They may also indicate cases where the apical foramen is some distance from the radiographic apex. Other roles include the detection of root canal perforation. A review of the literature focussed first on the subject of electronic apex location. A second review used the names of apex location devices. From the combined searches, 113 pertinent articles in English were found. This paper reviews the development, action, use and types of electronic apex locators.

  19. Generalized granuloma annulare

    Directory of Open Access Journals (Sweden)

    Khatri M

    1995-01-01

    Full Text Available A 35-years-old female patient had generalized pruritic papular lesions, distributed like dermatitis herpetiformis for last 4 years. Histopathologic changes were typical of granuloma annulare with negative results of direct immunofluorescence. The patient did not have association of diabetes mellitus or any other systemic disease. She failed to respond to dapsone therapy and 13-cis-retinoic acid.

  20. Peripheral giant cell granuloma

    Directory of Open Access Journals (Sweden)

    Padam Narayan Tandon

    2012-01-01

    Full Text Available Peripheral giant cell granuloma or the so-called "giant cell epulis" is the most common oral giant cell lesion. It normally presents as a soft tissue purplish-red nodule consisting of multinucleated giant cells in a background of mononuclear stromal cells and extravasated red blood cells. This lesion probably does not represent a true neoplasm, but rather may be reactive in nature, believed to be stimulated by local irritation or trauma, but the cause is not certainly known. This article reports a case of peripheral giant cell granuloma arising at the maxillary anterior region in a 22-year-old female patient. The lesion was completely excised to the periosteum level and there is no residual or recurrent swelling or bony defect apparent in the area of biopsy after a follow-up period of 6 months.

  1. Cutaneous mercury granuloma

    OpenAIRE

    Kalpana A Bothale; Mahore, Sadhana D.; Sushil Pande; Trupti Dongre

    2013-01-01

    Cutaneous mercury granuloma is rarely encountered. Clinically it may pose difficulty in diagnosis. Here, we report a 23-year-old male presented with erythematous, nodular lesions over the forearm and anterior aspect of chest wall. Metallic mercury in tissue sections appear as dark black, opaque, spherical globules of varying size and number. They are surrounded by granulomatous foreign-body reaction. It is composed of foreign body giant cells and mixed inflammatory infiltrate composed of hist...

  2. [Disseminated granuloma annulare].

    Science.gov (United States)

    Kansky, A

    1975-09-01

    A case of generalized granuloma annulare in a 55 year old man is reported. The disease appeared five years before the first admission to the hospital. A large number of bluish-red or skin-colour papules were scattered mainly around the earlobes, buttocks and on the extremities. Some of the lesions were lined up in rings or plaques. Small depigmented and brownish scars were present. Two biopsies revealed characteristic foci of complete collagen degeneration accompanied by a palisading infiltrate in the upper dermis. Treatment with tuberculostatics and antimalarics was without improvement. The lesions cleared after a course of prednison, but reappeared when the drug was discontinued.

  3. Collagenolytic (necrobiotic) granulomas: part II--the 'red' granulomas.

    Science.gov (United States)

    Lynch, Jane M; Barrett, Terry L

    2004-07-01

    A collagenolytic or necrobiotic non-infectious granuloma is one in which a granulomatous infiltrate develops around a central area of altered collagen and elastic fibers. The altered fibers lose their distinct boundaries and exhibit new staining patterns, becoming either more basophilic or eosinophilic. Within the area of altered collagen, there may be deposition of acellular substances such as mucin (blue) or fibrin (red), or there may be neutrophils with nuclear dust (blue), eosinophils (red), or flame figures (red). These color distinctions can be used as a simple algorithm for the diagnosis of collagenolytic granulomas, i.e. 'blue' granulomas vs. 'red' granulomas. Eight diagnoses are included within these two groupings, which are discussed in this two-part article. In the previously published first part, the clinical presentation, pathogenesis and histologic features of the 'blue' collagenolytic granulomas were discussed. These are the lesions of granuloma annulare, Wegener's granulomatosis, and rheumatoid vasculitis. In this second half of the series, the 'red' collagenolytic granulomas are discussed; these are the lesions of necrobiosis lipoidica, necrobiotic xanthogranuloma, rheumatoid nodules, Churg-Strauss syndrome, and eosinophilic cellulitis (Well's Syndrome).

  4. Sarcoid granuloma on black tattoo.

    Science.gov (United States)

    Morales-Callaghan, Ana María; Aguilar-Bernier, Miguel; Martínez-García, Gerardo; Miranda-Romero, Alberto

    2006-11-01

    We report the case of a patient with a black and turquoise tattoo who developed sarcoid granulomas on the areas of black pigment. Patch tests showed a positive reaction to nickel, cobalt, and cadmium; spectrophotometric analysis of the black pigment revealed the presence of nickel and cobalt among other metals. Although the pathogenesis of sarcoid granulomas is unknown, it seems that a delayed type hypersensitivity reaction is one of the mechanisms involved.

  5. Plasma cell granuloma of lip

    Directory of Open Access Journals (Sweden)

    B Sabarinath

    2012-01-01

    Full Text Available Plasma cells are medium-sized round-to-oval cells with eccentrically placed nuclei, usually found in the red pulp of the spleen, tonsils, medulla of the lymph nodes, nasal mucosa, upper airway, lamina propria of the gastrointestinal tract, and sites of inflammation. Plasma cell granuloma is a rare reactive tumor-like proliferation composed chiefly of plasmacytic infiltrate. Here, we present a case of plasma cell granuloma of lip in a female patient.

  6. Cholesterol Test

    Science.gov (United States)

    ... AACC products and services. Advertising & Sponsorship: Policy | Opportunities Cholesterol Share this page: Was this page helpful? Also known as: Blood Cholesterol Formal name: Total Cholesterol Related tests: HDL Cholesterol , ...

  7. What's Cholesterol?

    Science.gov (United States)

    ... los dientes Video: Getting an X-ray What's Cholesterol? KidsHealth > For Kids > What's Cholesterol? Print A A ... thing for food to be low in it? Cholesterol and Your Body Cholesterol (say: kuh-LES-tuh- ...

  8. What's Cholesterol?

    Science.gov (United States)

    ... Room? What Happens in the Operating Room? What's Cholesterol? KidsHealth > For Kids > What's Cholesterol? A A A ... thing for food to be low in it? Cholesterol and Your Body Cholesterol (say: kuh-LES-tuh- ...

  9. Plasma cell granuloma of gingiva

    Directory of Open Access Journals (Sweden)

    Balaji Manohar

    2011-01-01

    Full Text Available Plasma cell granuloma is a rare benign lesion characterized by the infiltration of plasma cells; primarily occurring in the lungs. It is also seen to occur in the brain, kidney stomach, heart, and so on. In the intraoral region it is seen to involve the tongue, oral mucosa, and gingiva. This case presents a 42-year-old female, with an enlargement in the maxillary anterior region, treated by excisional biopsy. Histological evaluation revealed plasma cell infiltrates in the connective tissue. The immunohistochemistry revealed kappa and lambda light chains with a polyclonal staining pattern, which confirmed the diagnosis of plasma cell granuloma.

  10. About Cholesterol

    Science.gov (United States)

    ... Artery Disease Venous Thromboembolism Aortic Aneurysm More About Cholesterol Updated:Apr 3,2017 It may surprise you ... our bodies to keep us healthy. What is cholesterol and where does it come from? Cholesterol is ...

  11. Oral pyogenic granuloma: Various concepts of etiopathogenesis

    Directory of Open Access Journals (Sweden)

    Reet Kamal

    2012-01-01

    Full Text Available Pyogenic granuloma or granuloma pyogenicum is a well-known oral lesion. The name pyogenic granuloma is a misnomer since the condition is not associated with pus and does not represent a granuloma histologically. Pyogenic granuloma of the oral cavity is known to involve the gingiva commonly. Extragingivally, it can occur on the lips, tongue, buccal mucosa, palate, and the like. A history of trauma is common in such sites. The etiology of the lesion is not known, though it was originally believed to be a botryomycotic infection. It is theorized that pyogenic granuloma possibly originates as a response of tissues to minor trauma and/or chronic irritation, thus opening a pathway for invasion of nonspecific microorganisms, although microorganisms are seldom demonstrated within the lesion. Pathogenesis of pyogenic granuloma is still debatable. Medline and PubMed databases were searched under the following key terms: Pathogenesis of oral pyogenic granuloma, pyogenic granuloma, and oral pyogenic granuloma. This search was limited to articles on human/animal studies which were published in English language. After reviewing the searched articles, the relevant articles were selected for the present review. Through this article, we have tried to summarize and present all the concepts of pathogenesis related to this most common and most mysterious oral lesion.

  12. Annular Elastolytic Giant Cell Granuloma

    Directory of Open Access Journals (Sweden)

    Khandpur Sujay

    2001-01-01

    Full Text Available The clinical and histopathological features of annular elastolytic giant cell granuloma in a 42â€"year-old female patient are described. The condition presented as annular erythematous plaques over sun- exposed skin sparing the face. Histopathology revealed dense granulomatous infiltrate consisting of numerous giant cells and lymphohistiocytes without any palisading arrangement or necrobiosis. The features differentiating it from other similar granulomatous disorders are discussed.

  13. Oral pathology case: pyogenic granuloma

    OpenAIRE

    Amorim, J.M.S.

    2011-01-01

    A 11 year-old boy was referred to our department with a chief complaint of a painless slow growing mass, localized to the gums. The lesion was highly vascular, easily bleeding, at the level of 2.1. In addition, the patient had poor oral hygiene, presenting exuberant plaque and tartar. We performed an excisional biopsy of the lesion and removed the plaque and tartar; histology confirmed the clinical diagnosis of pyogenic granuloma.

  14. Tick bite granuloma : recommendations for surgical treatment

    OpenAIRE

    Hirota, Keisuke; Kurosawa, Yoshinaga; Goto, Keisuke; Adachi, Koji; Yoshida, Yuichi; Yamamoto, Osamu

    2015-01-01

    Tick bite is known as a possible cause of some infectious diseases such as Lyme disease, spotted fever and related illnesses. The reaction to a tick bite may persist for several months to several years and can sometimes cause histopathological granuloma. The long-term reaction to salivary extracts from the tick could be responsible for development of granuloma in our patient. We recommended complete resection as the only sure way to treat formed granuloma.

  15. Eosinophilic granuloma of the capital femoral epiphysis.

    Science.gov (United States)

    Goto, Takahiro; Nemoto, Tetsuo; Ogura, Koichi; Imanishi, Jungo; Hozumi, Takahiro; Funata, Nobuaki

    2011-05-01

    Eosinophilic granuloma occurs almost exclusively in the diaphysis or metaphysis, when tubular bones are affected. The investigators present an extremely rare case of eosinophilic granuloma arising at the epiphysis of the femoral head in an 8-year-old boy. Plain radiographs and computed tomography showed a well-circumscribed radiolucent lesion, suggesting chondroblastoma or Brodie's abscess. However, the findings on magnetic resonance images were different from typical features of chondroblastoma or Brodie's abscess. The lesion was curetted. Histological diagnosis was eosinophilic granuloma. Differential diagnoses of a radiolucent lesion at the epiphysis in a child should include, though quite rare, eosinophilic granuloma.

  16. Granuloma formation in ANCA-associated vasculitides

    NARCIS (Netherlands)

    Lamprecht, Peter; Wieczorek, Stefan; Epplen, Jorg T.; Ambrosch, Petra; Kallenberg, Cees G. M.

    2009-01-01

    Granuloma formation is a key pathologic finding in two of the anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitides: Wegener's granulomatosis (WG) and Churg-Strauss syndrome (CSS). So far, no animal models have been established convincingly reproducing both vasculitic and granuloma

  17. The APEX-SZ Instrument

    CERN Document Server

    Schwan, Daniel; Basu, Kaustuv; Bender, Amy N; Bertoldi, Frank; Cho, Hsaio-Mei; Chon, Guyong; Clarke, John; Dobbs, Matt; Ferrusca, Daniel; Gusten, Rolfe; Halverson, Nils W; Holzapfel, William L; Horellou, Cathy; Johansson, Daniel; Johnson, Bradley R; Kennedy, James; Kermish, Zigmund; Kneissl, Ruediger; Lanting, Trevor; Lee, Adrian T; Lueker, Martin; Mehl, Jared; Menten, Karl M; Muders, Dirk; Pacaud, Florian; Plagge, Thomas; Reichardt, Christian L; Richards, Paul L; Schaaf, Rienhold; Schilke, Peter; Sommer, Martin W; Spieler, Helmuth; Tucker, Carole; Weiss, Axel; Westbrook, Benjamin; Zahn, Oliver

    2010-01-01

    The APEX-SZ instrument is a millimeter-wave cryogenic receiver designed to observe galaxy clusters via the Sunyaev-Zel'dovich effect from the 12 m APEX telescope on the Atacama plateau in Chile. The receiver contains a focal plane of 280 superconducting transition-edge sensor (TES) bolometers instrumented with a frequency-domain multiplexed readout system. The bolometers are cooled to 280 mK via a three-stage helium sorption refrigerator and a mechanical pulse-tube cooler. Three warm mirrors, two 4 K lenses, and a horn array couple the TES bolometers to the telescope. APEX-SZ observes in a single frequency band at 150 GHz with 1' angular resolution and a 22' field-of-view, all well suited for cluster mapping. The APEX-SZ receiver has played a key role in the introduction of several new technologies including TES bolometers, the frequency-domain multiplexed readout, and the use of a pulse-tube cooler with bolometers. As a result of these new technologies, the instrument has a higher instantaneous sensitivity a...

  18. Granuloma multiforme: A report from India

    Directory of Open Access Journals (Sweden)

    Kumari Rashmi

    2009-01-01

    Full Text Available Granuloma multiforme (GM is a reactive skin disorder of unknown etiology, characterized clinically by confluent annular lesions and histologically by focal necrobiosis and histiocytic granulomas. GM is significant because of its clinical resemblance to tuberculoid leprosy, with which it can be confused. Here, we report a case of granuloma multiforme from India in a 70-year-old male farmer, with multiple asymptomatic large annular rings of papules over the back and thighs on photodistributed sites. Histopathology helps to clinch the diagnosis and differentiate from similar clinical and histologic mimics such as granuloma annulare, tuberculoid leprosy, actinic granuloma and annular sarcoid. Nevertheless, a very high degree of suspicion is required to diagnose GM.

  19. Cholesterol (image)

    Science.gov (United States)

    Cholesterol is a soft, waxy substance that is present in all parts of the body including the ... and obtained from animal products in the diet. Cholesterol is manufactured in the liver and is needed ...

  20. [Generalized granuloma annulare or diffuse dermal histiocytosis?].

    Science.gov (United States)

    Kretzschmar, L; Biel, K; Luger, T A; Goerdt, S

    1995-08-01

    Generalized granuloma annulare is a rare variant of granuloma annulare affecting the trunk and extremities with a multitude of lesions. In contrast to localized granuloma annulare, generalized granuloma annulare occurs in older patients, shows a stronger association with diabetes, and is characteristically chronic. Like our 55-year-old patient, most patients present with papules and annular plaques; less often, macular or non-annular lesions may be encountered. Histology often fails to show necrobiotic or necrotic connective tissue changes demarcated by a palisading granuloma. Instead, there are diffuse dermal, band-like or nodular aggregations of histiocytes intermingled with some multinucleated giant cells and a predominantly lymphocytic infiltrate in the periphery. Because of its special characteristics, it has been suggested that generalized granuloma annulare might constitute a separate disease entity and that it should be classed among the primary cutaneous histiocytoses as a diffuse dermal histiocytosis. Using immunohistochemistry to determine the macrophage phenotype of the lesional histiocytes, we have shown that generalized granuloma annulare is not a cutaneous histiocytosis. Neither MS-1 high-molecular-weight protein, a new specific marker for cutaneous non-Langerhans cell histiocytoses, nor CD1a, the well-known marker for Langerhans cells and Langerhans cell histiocytoses, is expressed by the lesional histiocytes of our patient. In contrast, the antigen expression pattern was diagnostic for non-infectious granulomas and was highly similar to that in localized granuloma annulare. In contrast to the successful treatment of localized granuloma annulare reported with intralesional interferon beta-1, systemic treatment with interferon alpha-2b (9 x 10(6) units three times a week) was ineffective.

  1. Oracle APEX 4.2 cookbook

    CERN Document Server

    Van Zoest, Michel

    2013-01-01

    As a Cookbook, this book enables you to create APEX web applications and to implement features with immediately usable recipes that unleash the powerful functionality of Oracle APEX 4.2. Each recipe is presented as a separate, standalone entity and the reading of other, prior recipes is not required.It can be seen as a reference and a practical guide to APEX development.This book is aimed both at developers new to the APEX environment and at intermediate developers. More advanced developers will also gain from the information at hand.If you are new to APEX you will find recipes to start develo

  2. Actinic Granuloma with Focal Segmental Glomerulosclerosis

    Directory of Open Access Journals (Sweden)

    Ruedee Phasukthaworn

    2016-02-01

    Full Text Available Actinic granuloma is an uncommon granulomatous disease, characterized by annular erythematous plaque with central clearing predominately located on sun-damaged skin. The pathogenesis is not well understood, ultraviolet radiation is recognized as precipitating factor. We report a case of a 52-year-old woman who presented with asymptomatic annular erythematous plaques on the forehead and both cheeks persisting for 2 years. The clinical presentation and histopathologic findings support the diagnosis of actinic granuloma. During that period of time, she also developed focal segmental glomerulosclerosis. The association between actinic granuloma and focal segmental glomerulosclerosis needs to be clarified by further studies.

  3. Monte Carlo studies of APEX

    Energy Technology Data Exchange (ETDEWEB)

    Ahmad, I.; Back, B.B.; Betts, R.R. [and others

    1995-08-01

    An essential component in the assessment of the significance of the results from APEX is a demonstrated understanding of the acceptance and response of the apparatus. This requires detailed simulations which can be compared to the results of various source and in-beam measurements. These simulations were carried out using the computer codes EGS and GEANT, both specifically designed for this purpose. As far as is possible, all details of the geometry of APEX were included. We compared the results of these simulations with measurements using electron conversion sources, positron sources and pair sources. The overall agreement is quite acceptable and some of the details are still being worked on. The simulation codes were also used to compare the results of measurements of in-beam positron and conversion electrons with expectations based on known physics or other methods. Again, satisfactory agreement is achieved. We are currently working on the simulation of various pair-producing scenarios such as the decay of a neutral object in the mass range 1.5-2.0 MeV and also the emission of internal pairs from nuclear transitions in the colliding ions. These results are essential input to the final results from APEX on cross section limits for various, previously proposed, sharp-line producing scenarios.

  4. Eosinophilic granuloma of the mandibular condyle

    Energy Technology Data Exchange (ETDEWEB)

    Huh, Kyung Hoe; Yi, Won Jin; Oh, Sung Won; Lee, Sam Sun [Department of Oral and Maxillofacial Radiology, and Dental Research Institute, School of Dentistry, Seoul National University, Seoul (Korea, Republic of); Choi, Mun Kyung [Department of Oral and Maxillofacial Surgery, College of Medicine, Inje University Sanggye Paik Hospital, Seoul (Korea, Republic of)

    2008-03-15

    The present study reports a case of eosinophilic granuloma of the mandibular condyle. Eosinophilic granulomas on the mandibular condyle are very rare, but there are several common clinical and radiographic presentations. The clinical presentations involve swelling on preauricular area, limitation of opening, TMJ pain, etc. The radiographic presentations involve radiolucent lytic condylar lesion with or without pathologic fracture. Sometimes new bone formations are observed. The purpose of the article is to add new cases to the literatures.

  5. Good vs. Bad Cholesterol

    Science.gov (United States)

    ... Venous Thromboembolism Aortic Aneurysm More Good vs. Bad Cholesterol Updated:Apr 3,2017 Cholesterol can't dissolve ... test . View an animation of cholesterol . LDL (Bad) Cholesterol LDL cholesterol is considered the “bad” cholesterol because ...

  6. High Blood Cholesterol

    Science.gov (United States)

    ... version of this page please turn Javascript on. High Blood Cholesterol What is High Blood Cholesterol? What is Cholesterol? Cholesterol is a ... heart disease. If Your Blood Cholesterol Is Too High Too much cholesterol in your blood is called ...

  7. Improvements to the APEX apparatus

    Energy Technology Data Exchange (ETDEWEB)

    Ahmad, I.; Back, B.B.; Betts, R.R. [and others

    1995-08-01

    A number of technical issues led us to rework extensively the APEX apparatus in summer 1994. During the earlier runs, a significant fraction of the 432 silicon detector elements showed degraded resolution such that they had to be excluded from the final analysis in software. The effect of this is to reduce the efficiency of APEX and possibly also to introduce holes in the acceptance which, for some perhaps exotic scenarios, might reduce the acceptance to an unacceptably low level. Also, the energy thresholds below which it is not possible to generate timing information from the silicon detectors, were high enough that the low-energy acceptance of APEX was compromised to a significant extent. The origins of these difficulties were in part due to degraded performance of the silicon detectors themselves, problems with the silicon cooling systems and electronics problems. Both silicon arrays were disassembled and sub-standard detectors replaced, all detectors were also cleaned with the result that all detectors now performed at the specified values of leakage current. The silicon cooling systems were disassembled and rebuilt with the result that many small leaks were fixed. Defective electronics channels were repaired or replaced. The rotating target wheel was also improved with the installation of new bearings and a computer-controlled rotation and readout system. The rebuilt wheel can now run at speeds up to 900 rpm for weeks on end without breakdown. The target wheel and associated beam sweeping now work extremely well so that low-melting-point targets such as Pb and In can be used in quite intense beams without melting.

  8. Oracle Apex reporting tips and tricks

    CERN Document Server

    Bara, George

    2013-01-01

    Take advantage of all the exciting Reporting features of Oracle Application Express 4.2. Designed for a hands-on approach, this book contains in-depth practical guidelines from George Bara, a well-known Oracle Apex expert and blogger. From Classic to Interactive Reports, Web Services and Pdf Printing, "Oracle Apex Reporting Tips & Tricks" is a must-have for all database developers that want to make the most out of the Oracle Apex reporting engine.

  9. apex: phylogenetics with multiple genes.

    Science.gov (United States)

    Jombart, Thibaut; Archer, Frederick; Schliep, Klaus; Kamvar, Zhian; Harris, Rebecca; Paradis, Emmanuel; Goudet, Jérome; Lapp, Hilmar

    2017-01-01

    Genetic sequences of multiple genes are becoming increasingly common for a wide range of organisms including viruses, bacteria and eukaryotes. While such data may sometimes be treated as a single locus, in practice, a number of biological and statistical phenomena can lead to phylogenetic incongruence. In such cases, different loci should, at least as a preliminary step, be examined and analysed separately. The r software has become a popular platform for phylogenetics, with several packages implementing distance-based, parsimony and likelihood-based phylogenetic reconstruction, and an even greater number of packages implementing phylogenetic comparative methods. Unfortunately, basic data structures and tools for analysing multiple genes have so far been lacking, thereby limiting potential for investigating phylogenetic incongruence. In this study, we introduce the new r package apex to fill this gap. apex implements new object classes, which extend existing standards for storing DNA and amino acid sequences, and provides a number of convenient tools for handling, visualizing and analysing these data. In this study, we introduce the main features of the package and illustrate its functionalities through the analysis of a simple data set.

  10. A CLINICOPATHOLOGICAL STUDY OF CUTANEOUS GRANULOMA

    Directory of Open Access Journals (Sweden)

    Bornali

    2016-03-01

    Full Text Available BACKGROUND A wide range of immunologic and non-immunologic causes can lead to the formation of a granuloma. The aetiological agent and immunological status of the host determines the clinical presentation of these chronic skin lesions. However, diagnosis often becomes intricate as different clinical types present with morphological similarities, which gets further complicated by time and presumptive therapy. AIMS To study the incidence and clinical pattern of cutaneous granulomas; their relationship with age, sex, trauma and determine the importance of laboratory tests, specially histopathology in confirming aetiological diagnosis. SETTINGS AND DESIGN Cross-sectional study, based on hospital records. METHODS AND MATERIAL The study was from OPD records of Department of Dermatology and Venereology. All patients who had attended with clinically suspected cutaneous granulomatous lesions and underwent investigative procedures over a one-year period were included in the study. The relevance of the investigative procedures used, especially histopathology in arriving at the final diagnosis was established. Statistical analysis used: Descriptive statistical analysis and Chi-square test whenever appropriate. RESULTS AND CONCLUSIONS A total of 300 cases of cutaneous granuloma were included in the study. There was a male preponderance. The commonest cutaneous granuloma encountered was leprosy followed by fungal and tubercular granuloma. Less frequently encountered forms were syphilis, foreign body, parasitic, lymphogranuloma venereum, actinomycosis, rhinoscleroma, donovanosis and granulomatous mycosis fungoides. A total of 83.39% cases showed clinic-histopathological correlation. Cutaneous granulomas cause diagnostic difficulty due to clinical diversity and mimicry. Cutaneous granulomas of similar origin can present with varied clinical presentations, while those from different backgrounds can have similar presentations. A histopathological examination

  11. Oracle APEX 4.2 reporting

    CERN Document Server

    Pathak, Vishal

    2013-01-01

    Oracle APEX 4.2 Reporting is a practical tutorial for intermediate to advanced use, with plenty of step-by-step instructions and business scenarios for understanding and implementing the ins and outs of making reports.""Oracle APEX 4.2 Reporting"" is for you if you design or develop advanced solutions in APEX or wish to know about the advanced features of APEX. If you wish to have a 360 degree view of reporting technologies or work in a complex heterogeneous enterprise, this is a must-have.

  12. An Unusual Occurrence of Hepatic Granulomas and Secondary Sitosterolemia in Turner Syndrome

    Directory of Open Access Journals (Sweden)

    JayaKrishna Chintanaboina

    2015-01-01

    Full Text Available Although abnormal liver function tests occur in 50–80% of cases with Turner syndrome, there are no previous reports of overt hepatic disease or hepatic granulomas associated with Turner’s syndrome. We report three cases of Turner syndrome associated with hepatic granulomas with a wide range of liver dysfunction. Of the three patients, first patient underwent liver transplantation; second patient remained stable on immunosuppressants; and third patient died from complications of decompensated liver cirrhosis as she declined liver transplantation due to multiple comorbidities. One patient had sitosterolemia, a rare inherited autosomal recessive disorder of cholesterol metabolism, after she ingested β-sitosterol supplement and had worsening liver function tests and lipid panel. She had remarkably abnormal lipid panel that responded to ezetimibe and by stopping the β-sitosterol supplement.

  13. A rare case of petrous apex osteoma.

    Science.gov (United States)

    Cece, Hasan; Yildiz, Sema; Iynen, Ismail; Karakas, Omer; Karakas, Ekrem; Dogan, Ferit

    2012-06-01

    Osteomas are the most common tumours of the cranial vault and facial skeleton. Temporal bone osteoma is a rare entity. An osteoma arising from the petrous apex is extremely rare. We present a case of osteoma arising from the petrous apex followed by a discussion of the etiology, presentation, and radiologic findings.

  14. DNA Damage Signaling Instructs Polyploid Macrophage Fate in Granulomas

    DEFF Research Database (Denmark)

    Herrtwich, Laura; Nanda, Indrajit; Evangelou, Konstantinos

    2016-01-01

    Granulomas are immune cell aggregates formed in response to persistent inflammatory stimuli. Granuloma macrophage subsets are diverse and carry varying copy numbers of their genomic information. The molecular programs that control the differentiation of such macrophage populations in response to ...

  15. Oral telangiectatic granuloma with an intrabony defect

    Science.gov (United States)

    Rathore, Akanksha; Jadhav, Tanya; Kulloli, Anita; Singh, Archana

    2015-01-01

    Oral telangiectatic granuloma is a benign hyperplastic lesion occurring in response to trauma or chronic irritation in the oral cavity. The characteristic histological appearance comprises of typical granulation tissue with a proliferation of small thin-walled blood vessels in the loose connective tissue. We describe a case of a 36-year-old female who had a swelling in the left maxillary region which was associated with the intrabony defect. An internal bevel gingivectomy was performed, and the histopathological report was suggestive of telangiectatic granuloma. The intrabony defect was managed with the placement of platelet rich fibrin plug in the defect. A follow-up at 6 months showed no recurrence and no loss in the width of keratinized tissue. The aim of this case is to highlight the rare association of intrabony defect with telangiectatic granuloma and the need for histopathological diagnosis in such lesions. PMID:26941527

  16. Oral telangiectatic granuloma with an intrabony defect

    Directory of Open Access Journals (Sweden)

    Akanksha Rathore

    2015-01-01

    Full Text Available Oral telangiectatic granuloma is a benign hyperplastic lesion occurring in response to trauma or chronic irritation in the oral cavity. The characteristic histological appearance comprises of typical granulation tissue with a proliferation of small thin-walled blood vessels in the loose connective tissue. We describe a case of a 36-year-old female who had a swelling in the left maxillary region which was associated with the intrabony defect. An internal bevel gingivectomy was performed, and the histopathological report was suggestive of telangiectatic granuloma. The intrabony defect was managed with the placement of platelet rich fibrin plug in the defect. A follow-up at 6 months showed no recurrence and no loss in the width of keratinized tissue. The aim of this case is to highlight the rare association of intrabony defect with telangiectatic granuloma and the need for histopathological diagnosis in such lesions.

  17. Radiologic appearance of chronic parapharyngeal Teflon granuloma.

    Science.gov (United States)

    Hacein-Bey, Lotfi; Conneely, Mark F; Hijaz, Tarek A; Leonetti, John P

    2010-01-01

    Although Teflon has been used for almost 5 decades to provide tissue augmentation in various surgical indications, including head and neck surgery, its use has significantly declined in the last 2 decades, primarily because of its implication in granuloma formation. Teflon granulomas have been shown to cause false positives on positron emission tomography imaging and have been reported to have a characteristic magnetic resonance imaging (MRI) appearance. We report a patient with a large chronic Teflon granuloma of the parapharyngeal space that caused significant bony erosion of the atlas vertebra. The lesion's MRI signal characteristics were indistinguishable from those of surrounding tissues, while it showed characteristic hyperdensity on computed tomography due to the presence of fluorine atoms within Teflon. As MRI may supersede or replace computed tomography for a number of indications, and as Teflon has been used in large numbers of patients whose records may not always be available, knowledge of these findings has clinical relevance.

  18. Non-pruritic granuloma in Norwegian forest cats.

    Science.gov (United States)

    Leistra, W H G; van Oost, B A; Willemse, T

    2005-04-30

    The eosinophilic granuloma complex is a group of skin disorders common in cats. This paper describes the clinical, haematological and histopathological features of 17 related Norwegian forest cats, six of which had a linear granuloma on the caudal thigh, three of which also had a granuloma on the lower lip, and one of which had a granuloma in combination with an indolent ulcer. The high prevalence of the disease in this population is suggestive of a genetic background.

  19. Fibrin ring granulomas in hepatitis A.

    Science.gov (United States)

    Ruel, M; Sevestre, H; Henry-Biabaud, E; Courouce, A M; Capron, J P; Erlinger, S

    1992-12-01

    Fibrin ring granuloma is characterized by a fibrinous ring surrounding a central fat vacuole. It has been found in the liver and bone marrow of patients with Q fever, and occasionally with visceral leishmaniasis, cytomegalovirus, Epstein-Barr virus, Staphylococcus epidermidis infections, Hodgkin's lymphoma, and hypersensitivity to allopurinol. We describe a case of serologically confirmed viral hepatitis A with this lesion in the liver biopsy. A false positive anti-hepatitis A virus IgM result has been excluded. This is, to our knowledge, the second reported case of type A hepatitis with hepatic fibrin ring granulomas. It confirms that hepatitis A should be included in the differential diagnosis of this lesion.

  20. Antiepithelial autoantibodies associated with the feline eosinophilic granuloma complex.

    Science.gov (United States)

    Gelberg, H B; Lewis, R M; Felsburg, P J; Smith, C A

    1985-01-01

    A retrospective study of banked sera from 19 cats with the eosinophilic granuloma complex revealed that 68% of affected cats had circulating antibodies to components of normal cat epithelium. Seemingly, the eosinophilic granuloma complex of cats may be an autoimmune disease; however, epidermal damage caused by the eosinophilic granuloma complex may release altered self-antigens to which the cat's immune system responds.

  1. Cerebral cysticercus granuloma associated with a subdural effusion.

    Directory of Open Access Journals (Sweden)

    Rajshekhar V

    2001-04-01

    Full Text Available The association of a solitary cerebral cysticercus granuloma with a subdural effusion is being reported. The granuloma and the effusion resolved following albendazole therapy. We speculate that the spread of the inflammatory changes around the granuloma to the subdural space could have led to the development of the subdural effusion.

  2. Pyogenic granuloma associated with mandibular odontoma.

    Directory of Open Access Journals (Sweden)

    Karla Ocampo

    2014-08-01

    Full Text Available Background: pyogenic granuloma is a kind of inflammatory hyperplasia of multifactorial origin, which is usually related to trauma or constant irritation, drug use, hormonal factors, among others. Meanwhile the odontoma is a benign tumor odontogenic composed of epithelial and mesenchymal cells, their development is usually associated with trauma, infections, inherited disorders or hyperactivity odontoblast. Objectives: The objective is to present the clinical case of a patient that presented a case of pyogenic granuloma related to the presence of a mandibular odontoma, and therapeutic management and postoperative results. Case report: The case shows a female patient of 32 years old with a history of multinodular goiter and hypothyroidism, developing a mandibular odontoma of the left side associated with pyogenic granuloma in the same area, which was treated with surgical excision and reconstructed affected tissues with lyophilized bone and collagen membrane. Favorable outcome after surgery without evidence of recurrence, with proper osseointegration of alloplastic materials and soft tissues. Conclusions: The irritant effect of the presence of a tumor (odontoma in developing confirmed pyogenic granuloma.

  3. Pyogenic Granuloma with Severe Mandibular Bone Destruction

    Energy Technology Data Exchange (ETDEWEB)

    Shin, Jeong Won; Heo, Min Suk; Lee, Sam Sun; Choi, Soon Chul; Park, Tae Won [Dept. of Oral and Maxillofacial Radiology and Dental Research Institute College of Dentistry, Seoul National University, Seoul (Korea, Republic of)

    2000-06-15

    Pyogenic granuloma is a overzealous proliferation of a vascular type connective tissue as a result of some minor trauma and is a well circumscribed elevated, pedunculated or sessile benign inflammatory lesion of skin and mucous membrane. The clinical features of pyogenic granuloma are indicative but not specific and nearly all cases of pyogenic granulomas are superficial in nature, and there is little if any mention in the literature of these lesions producing alveolar bone even jaw bone loss. This case is somewhat unique in that the lesion was an obvious histologic pyogenic granuloma; however, it appeared to invade the mandibular bone which resulted in the loss of the adjacent teeth. A 12-year-old boy came to Seoul National University Dental Hospital with chief complaints of left facial swelling. The features obtained were as follows ; Plain radiograms showed a large well-circumscribed radiolucent lesion on left mandibular ramus area, which made severe expansion of lingual cortex and displacement of lower left 3rd molar tooth germ. Computed tomograms showed large soft tissue mass involving left masticator space with destruction of left mandibular ramus. Histologically, sections revealed loose edematous stroma with intense infiltration of inflammatory cells and proliferation of vascular channels. Also, there were focal areas of extensive capillary proliferation, bone destruction and peripheral new bone formation.

  4. Iatrogenic granulomas of the prostate and the urinary bladder

    DEFF Research Database (Denmark)

    Sørensen, Flemming Brandt; Marcussen, N

    1987-01-01

    In 1059 patients who had transurethral resections (TUR) of the prostate 8 cases (0.8%) with nonspecific granulomas were found. In another group of 280 patients treated by TUR for tumours of the urinary bladder 5 cases (1.8%) had granulomatous lesions in the resectates. The granulomas were observed...... was observed in the granulomas. The findings are compared to previously reported cases of iatrogenic granulomas in the prostate, the urinary bladder and other organs. It is concluded that the granulomas arise as a local reaction to previous surgery, maybe involving hypersensitivity to locally altered collagen....

  5. Apex Locator: A Reliable and Easy Guide

    OpenAIRE

    Meza DDS, Marco

    2015-01-01

    Now days is more the trust we can have to the Apex-locator in endodontics. Now we can expect more accuracy results working length measure, not only of the apical constriction but the total length of the roots. Endodontics can’t left behind the use of the Apex-locator, because of its useful work, not only on the determination of the works length, also in the diagnostic of perforations or fractures. Even do, this article displays a reliable and simple guide in the use of apex locator during eno...

  6. Apex Predators Program Age and Growth Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Apex Predators Program staff have collected vertebral centra from sportfishing tournaments, cruises, commercial fishermen and strandings in the Northeast US since...

  7. Apex Predators Program Sportfishing Tournament Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Apex Predators Program staff have collected shark sportfishing tournamant data from the Northeast US since the 1960's. These tournaments offer a unique opportunity...

  8. Women and Cholesterol

    Science.gov (United States)

    ... Disease Venous Thromboembolism Aortic Aneurysm More Women and Cholesterol Updated:Apr 1,2016 The female sex hormone ... 2014. Related Sites Nutrition Center My Life Check Cholesterol • Home • About Cholesterol • Why Cholesterol Matters • Understand Your ...

  9. HDL Cholesterol Test

    Science.gov (United States)

    ... products and services. Advertising & Sponsorship: Policy | Opportunities HDL Cholesterol Share this page: Was this page helpful? Also ... HDL; HDL-C Formal name: High-density Lipoprotein Cholesterol Related tests: Cholesterol ; LDL Cholesterol ; Triglycerides ; Lipid Profile ; ...

  10. Cholesterol IQ Quiz

    Science.gov (United States)

    ... Peripheral Artery Disease Venous Thromboembolism Aortic Aneurysm More Cholesterol IQ Quiz Updated:Feb 2,2015 Begin the quiz Cholesterol • Home • About Cholesterol Introduction Good vs. Bad Cholesterol ...

  11. Cholesterol and Your Child

    Science.gov (United States)

    ... Old Feeding Your 1- to 2-Year-Old Cholesterol and Your Child KidsHealth > For Parents > Cholesterol and ... child's risk of developing heart disease later. About Cholesterol Cholesterol is a waxy substance produced by the ...

  12. Lifestyle Changes and Cholesterol

    Science.gov (United States)

    ... Venous Thromboembolism Aortic Aneurysm More Lifestyle Changes and Cholesterol Updated:Sep 26,2016 As part of a ... to the Terms and Conditions and Privacy Policy Cholesterol • Home • About Cholesterol • Why Cholesterol Matters • Understand Your ...

  13. Common Misconceptions about Cholesterol

    Science.gov (United States)

    ... Venous Thromboembolism Aortic Aneurysm More Common Misconceptions about Cholesterol Updated:Apr 3,2017 Cholesterol can be both ... misconceptions about cholesterol. Click on each misconception about cholesterol to see the truth: My choices about diet ...

  14. LDL Cholesterol Test

    Science.gov (United States)

    ... products and services. Advertising & Sponsorship: Policy | Opportunities LDL Cholesterol Share this page: Was this page helpful? Also ... LDL; LDL-C Formal name: Low-Density Lipoprotein Cholesterol Related tests: Cholesterol ; HDL Cholesterol ; Triglycerides ; Lipid Profile ; ...

  15. Researching and deploying an APEX security scanning tool

    CERN Document Server

    Vali, Silvia

    2016-01-01

    Most of the APEX applications have not been developed considering security in mind or were developed many years ago, as well as the old version of APEX used exposes those type of applications to a variety of potential security risks. CERN develops and uses many APEX applications, but none of the currently used tools provides a sufficient way of vulnerability scanning for such applications. The current version of APEX used in CERN is 4.2.6 whilst the latest version is 5.1. This report provides the reader with the overview on APEX and the APEX-SERT vulnerability scanning tool as well as the summary of testing the APEX-SERT tool on existing APEX applications used in CERN and the samples, created during this project. The goal of this project was to research on existing tools for vulnerability scanning of APEX applications and to deploy the tool to be used APEX developers.

  16. Antrochoanal polyp derived from periapical granuloma

    Institute of Scientific and Technical Information of China (English)

    LIN Zhi-hong; LIN Min; TENG Yao-shu

    2008-01-01

    @@ Aatrochoanal polyp (ACP) is an infrequent, benign polypoid lesion that stems from the edematous mucosa of the maxillary sinus, grows from the natural or accessory ostium to the middle meatus, and protrudes toward the choana and nasopharynx.1 Although the exact causes of ACP are still unknown, chronic sinusitis, allergy,and lower respiratory tract infections are often related to ACP.2 Our report is an ACP arising from a secondary infection of the pefiapical granuloma in the maxillary sinus.

  17. Lethal midline granuloma syndrome: a diagnostic dilemma

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Bruno Niemeyer de Freitas; Bahia, Paulo Roberto Valle [Radiology, Hospital Universitario Clementino Fraga Filho - Universidade Federal do Rio de Janeiro (HUCFF-UFRJ), Rio de Janeiro, RJ (Brazil); Oliveira, Ana Luiza Vianna Sobral de Magalhaes [Resident of Medical Practice, Hospital Federal da Lagoa, Rio de Janeiro, RJ (Brazil); Marchon Junior, Joao Luiz [Unit of Computed Tomography, Hospital Federal da Lagoa, Rio de Janeiro, RJ (Brazil)

    2012-11-15

    The rare lethal midline granuloma syndrome is difficult to diagnose because of the wide array of related diseases and lack of knowledge by the majority of physicians. In the present report, the authors describe the case of a patient with this disease, caused by squamous cell carcinoma, drawing attention to differential diagnoses and to clinical and radiological findings that may be useful to define the diagnosis. (author)

  18. Gingival pyogenic granuloma developing during isotretinoin treatment

    Directory of Open Access Journals (Sweden)

    Engin Şenel

    2014-12-01

    Full Text Available Pyogenic granuloma (PG is a rare side effect of isotretinoin therapy. Oral pyogenic granuloma developing during isotretinoin treatment has not been reported so far. A 22-old-male patient, who had been given oral isotretinoin treatment for severe nodular acne, was admitted with the complaint of a painless and red nodule in his lower gum at the end of the second month of the treatment. The patient did not report any history of trauma or dental treatment. Dermatologic examination revealed a hemorrhagic nodule measuring 1.5x1 cm in size in the lower gums of the cutting and canine teeth. The lesion was excised completely. Histopathological examination disclosed acanthosis and hyperkeratosis in epidermis, subepidermal vascular proliferation, edema, and sparsely scattered inflammatory cell groups. The mechanism by which isotretinoin causes pyogenic granulomas is not exactly known. It should be considered that this rare side effect can be gingival in patients taking isotretinoin and the regular oral examination should not be neglected.

  19. Epulis and pyogenic granuloma with occlusal interference

    Directory of Open Access Journals (Sweden)

    Widowati Witjaksono

    2005-06-01

    Full Text Available In dental clinic of Hospital University Science Malaysia (HUSM, there were cases with Localized Gingival Enlargement (LGE in the oral cavity with occlusal interference. In this study, three cases were observed. They were a 13 - year- old female with fibrous lge around 31 and 32 with occlusal interference in protrusive movement due to X bite, a 15 - year – old female with pyogenic granuloma near 11 & 21 with occlusal interference due to deep bite; and a 24 – year – old female who was eight months in pregnancy with pyogenic granuloma on the 34-35 and severe generalized pregnancy gingivitis with occlusal interference in centric occlusion and lateral movement. Clinical and histopathological diagnosis of the first case showed fibrous epulis, whereas the second and third cases disclosed pyogenic granuloma. Chronic trauma of the gingiva due to occlusal interference was assumed to be the cause of those LGE in case 1 and 2, while in case 3 poor oral hygiene and chronic trauma were assumed to be the etiologic factors.

  20. Emerging trends in the formation & function of tuberculosis granulomas

    Directory of Open Access Journals (Sweden)

    Geanncarlo eLugo-Villarino

    2013-01-01

    Full Text Available The granuloma is an elaborated aggregate of immune cells found in non-infectious as well asinfectious diseases. It is a hallmark of tuberculosis (TB. Predominantly thought as a host-drivenstrategy to constrain the bacilli and prevent dissemination, recent discoveries indicatethe granuloma can also be modulated into an efficient tool to promote microbial pathogenesis.The aim of future studies will certainly focus on better characterization of the mechanismsdriving the modulation of the granuloma functions. Here, we provide unique perspectivesfrom both the innate and adaptive immune system in the formation and the role of the TBgranuloma. As macrophages (Mϕs comprise the bulk of granulomas, we highlight theemerging concept of Mϕ polarization and its potential impact in the microbicide response, andother activities, that may ultimately shape the fate of granulomas. Alternatively, we shed lighton the ability of B cells to influence inflammatory status within the granuloma.

  1. Annular elastolytic giant cell granuloma of conjunctiva: A case report

    Directory of Open Access Journals (Sweden)

    Karabi Konar

    2014-01-01

    Full Text Available Annular elastolytic giant cell granuloma is a condition characterized histologically by damaged elastic fibers associated with preponderance of giant cells along with absence of necrobiosis, lipid, mucin, and pallisading granuloma. It usually occurs on sun-damaged skin and hence the previous name actinic granuloma. A similar process occurs on the conjunctiva. Over the past three decades only four cases of conjunctival actinic granuloma have been documented. All the previous patients were females with lesions in nasal or temporal bulbar conjunctiva varying 2-3 mm in size. We report a male patient aged 70 years presenting with a 14 mm × 7 mm fleshy mass on right lower bulbar conjunctiva. Clinical differential diagnoses were lymphoma, squamous cell carcinoma in situ and amyloidosis. Surgical excision followed by histopathology confirmed it to be a case of actinic granuloma. This is the first case of isolated conjunctival actinic granuloma of such a large size reported from India.

  2. Intravenous pyogenic granuloma of the hand - a case report.

    Science.gov (United States)

    Joethy, J; Al Jajeh, I; Tay, S C

    2011-01-01

    Intravenous pyogenic granuloma represents a variant of the common pyogenic granuloma in which the capillary proliferation is entirely confined to the lumen of a vein. To our knowledge, this entity is rare and only a few cases have been reported before in the hand. We present a case of intravenous pyogenic granuloma of the hand and a review of this entity from previous published cases.

  3. Granuloma telangiectásico en cavidad oral Telangiecticum granuloma in oral cavity

    OpenAIRE

    M. Rebolledo Cobos; J. Harris Ricardo; O. Cantillo Pallares; Z. Carbonell Muñoz; A. Díaz Caballero

    2010-01-01

    El granuloma telangiectásico es un tumor de origen epitelial benigno que tiene predilección en cavidad oral a nivel de la encía, de contenido vascular y de crecimiento rápido, cuya etiología es atribuible a irritantes locales como placa bacteriana, calculo, traumatismos, presencia de restos radiculares y otros como la presencia de cuerpos extraños. Esta patología es muy semejante a granuloma periférico de células gigantes, hemangioma capilar, carcinoma epidermoide exofítico, sarcoma de Kaposi...

  4. Granuloma actinico de O'Brien O'Brien actinic granuloma

    Directory of Open Access Journals (Sweden)

    J A Gregoris

    2009-03-01

    Full Text Available Se comunica un caso de granuloma actínico en una paciente de sexo femenino, caucásica, la cual presentaba concomitantemente arteritis de la temporal y polimialgia reumática. Actualmente se considera que debido a la fisiopatogenia de las tres entidades mencionadas, podría tratarse la primera, de un marcador de las dos restantes.We present a female, white, with an actinic granuloma, concomitantly with temporal arteritis and polymyalgia rheumatica. Today it is considered that, due to the phisiopathogenia of the three entities mentioned before, the first one could be used as a reference for the other two.

  5. Granuloma eosinofílico orbitário Orbital eosinophilic granuloma

    OpenAIRE

    2008-01-01

    OBJETIVO: Relatar, de forma retrospectiva, a experiência no diagnóstico e tratamento do granuloma eosinofílico da órbita em serviço de referência. MÉTODOS: Identificados os pacientes com diagnóstico de granuloma eosinofílico orbitário, no Registro do Laboratório de Patologia Ocular do Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, no período entre 1974 e 2004. Coletados dados referentes ao diagnóstico, tratamento e realizada revisão das lâminas coradas pela hem...

  6. Granuloma annulare localized to the shaft of the penis

    DEFF Research Database (Denmark)

    Trap, R; Wiebe, B

    1993-01-01

    A case of granuloma annulare localized to the shaft of the penis is reported. The differential diagnoses are discussed. Penile granuloma annulare is a rare disorder and it is concluded that biopsies of penile lesions are recommended to verify the correct diagnosis.......A case of granuloma annulare localized to the shaft of the penis is reported. The differential diagnoses are discussed. Penile granuloma annulare is a rare disorder and it is concluded that biopsies of penile lesions are recommended to verify the correct diagnosis....

  7. Treatment of recurrent trigeminal neuralgia due to Teflon granuloma.

    Science.gov (United States)

    Capelle, Hans-Holger; Brandis, Almuth; Tschan, Christoph A; Krauss, Joachim K

    2010-08-01

    Recurrent trigeminal neuralgia after microvascular decompression (MVD) may be due to insufficient decompression, dislocation of the implant to pad the neurovascular contact, or the development of granuloma. Here, we report on our experience with Teflon granuloma including its treatment and histopathological examination. In a series of 200 patients with trigeminal neuralgia MVD was performed with Teflon felt according to Jannetta's technique. In three patients with recurrent facial pain Teflon granuloma was found to be the cause for recurrence. In each instance, the granuloma was removed for histopathological examination. Mean age at the first procedure was 62.3 years and at the second procedure 66.3 years. Recurrence of pain occurred between 1 and 8.5 years after the first procedure. MRI scans demonstrated local gadolineum enhancement in the cerebellopontine angle, and CT scans showed local calcification. Intraoperatively dense fibrous tissue was found at the site of the Teflon granuloma. Histopathological examination revealed foreign body granuloma with multinuclear giant cells, collagen-rich hyalinized scar tissue, focal hemosiderin depositions, and microcalcifications. The Teflon granuloma was completely removed, and a new Teflon felt was used for re-decompression. Patients were free of pain after the second procedure at a mean of 40.3 months of follow-up. Teflon granuloma is a rare cause for recurrent facial pain after MVD. Small bleeding into the Teflon felt at surgery might trigger its development. A feasible treatment option is surgical re-exploration, nerve preserving removal of the granuloma, and repeat MVD.

  8. An unusual presentation of Teflon granuloma: case report and discussion.

    Science.gov (United States)

    Pagedar, Nitin A; Listinsky, Catherine M; Tucker, Harvey M

    2009-01-01

    For more than 25 years, Teflon was the most commonly used material for injection laryngoplasty. However, the incidence of Teflon granuloma and the consequent deterioration of glottic function ultimately led to the development of other injectable materials, and as a result, Teflon granulomas are no longer frequently encountered. We present a case of Teflon granuloma that was unusual in that (1) a long period of time had elapsed between the injection and the granuloma formation and (2) there was no change in the patient's glottic function.

  9. The large APEX bolometer camera LABOCA

    Science.gov (United States)

    Siringo, Giorgio; Kreysa, Ernst; Kovacs, Attila; Schuller, Frederic; Weiß, Axel; Esch, Walter; Gemünd, Hans-Peter; Jethava, Nikhil; Lundershausen, Gundula; Güsten, Rolf; Menten, Karl M.; Beelen, Alexandre; Bertoldi, Frank; Beeman, Jeffrey W.; Haller, Eugene E.; Colin, Angel

    2008-07-01

    A new facility instrument, the Large APEX Bolometer Camera (LABOCA), developed by the Max-Planck-Institut für Radioastronomie (MPIfR, Bonn, Germany), has been commissioned in May 2007 for operation on the Atacama Pathfinder Experiment telescope (APEX), a 12 m submillimeter radio telescope located at 5100 m altitude on Llano de Chajnantor in northern Chile. For mapping, this 295-bolometer camera for the 870 micron atmospheric window operates in total power mode without wobbling the secondary mirror. One LABOCA beam is 19 arcsec FWHM and the field of view of the complete array covers 100 square arcmin. Combined with the high efficiency of APEX and the excellent atmospheric transmission at the site, LABOCA offers unprecedented capability in large scale mapping of submillimeter continuum emission. Details of design and operation are presented.

  10. Sea urchin granuloma Granulomas por ouriços-do-mar

    Directory of Open Access Journals (Sweden)

    André Luiz Rossetto

    2006-10-01

    Full Text Available Injuries caused by venomous and poisonous aquatic animals may provoke important morbidity in humans. The phylum Echinoderma include more than 6000 species of starfish, sea urchins, sand dollars, and sea cucumbers some of which have been found responsible for injuries to humans. Initial injuries by sea urchins are associated with trauma and envenomation, but later effects can be observed. Sea urchin granuloma is a chronic granulomatous skin disease caused by frequent and successive penetration of sea urchin spines which have not been removed from wounds. The authors report a typical case of sea urchin granuloma in a fisherman and its therapeutic implications.Os acidentes por animais aquáticos traumatizantes e venenosos podem provocar morbidez importante em humanos. Equinodermos marinhos incluem mais de 6000 espécies de estrelas-do-mar, ouriços-do-mar, "bolachas-de-praia" e pepinos-do-mar. Vários equinodermos têm sido responsabilizados por acidentes em humanos. Granulomas por ouriço-do-mar são lesões de caráter granulomatoso, crônicas, causada por acidentes com espículas de ouriço-do-mar. Os autores relatam um caso típico de granulomas por ouriço-do-mar ocorrido em um pescador e enfatizam as implicações terapêuticas aplicadas.

  11. What Is Cholesterol?

    Science.gov (United States)

    ... Loss Surgery? A Week of Healthy Breakfasts Shyness Cholesterol KidsHealth > For Teens > Cholesterol Print A A A ... High Cholesterol? en español ¿Qué es el colesterol? Cholesterol Is a Fat in the Blood Cholesterol (kuh- ...

  12. What Is Cholesterol?

    Science.gov (United States)

    ... Loss Surgery? A Week of Healthy Breakfasts Shyness Cholesterol KidsHealth > For Teens > Cholesterol A A A What's ... High Cholesterol? en español ¿Qué es el colesterol? Cholesterol Is a Fat in the Blood Cholesterol (kuh- ...

  13. Clinical Characteristics and Treatment of Malignant Granuloma

    Institute of Scientific and Technical Information of China (English)

    Chongjin Feng; Junbing Guo; Yong Chen

    2005-01-01

    OBJECTIVE To analyse the clinical characteristics of malignant granuloma(MG) and evaluate its treatment.METHODS From March 1985 to May 1998, 101 cases of malignant granuloma were treated with radiation (RT) alone or radiotherapy followed by chemotherapy or chemotherapy followed by radiotherapy. For chemotherapy, a CCNU, COMP (CTX, VCR, MTX, PDN) or CHOP (CTX,ADM, VCR, PDN) regimen was given. Radiation was directed through the anterior field of the nose mainly for nasal and paranasal sinus malignant granuloma, and through the faciocervical field for malignant granuloma of Walderyer's ring or for patients with cervical lymphadenectasis. Total dose was 45-65 Gy over 5-6 weeks.RESULTS The overall 3-year, 5-year and 10-year survival rates were 78.2%, 56.1% and 39.7% respectively. The 5-year survival rate was: RT group 60.3%, RT + CHOP or CHOP + RT group 64.7% (P >0.05), RT +CCNU group 40%, and RT + COMP group 33.3%. The 5-year survival rates of patients with one involved focus and more than 2 involved foci were 75.6%(34/45) and 39.3% (22/56) (P<0.001). The 5-year survival rates of patients with or without body symptoms were 39.6% (18/48) and 67.9%(36/53) (P<0.05). The 5-year survival rate of the 50-60 Gy group and the <50Gy group were 60.1% (40/66) and 20% (1/5)(P <0.05). The local and regional recurrence rate was 20.8 % (21/101 ).CONCLUSION Radiotherapy alone should be the treatment of choice for patients with one site involvement and without body symptoms. Radiation fields should be large enough to include the potentially involved sites. The recommended dose is 50-60 Gy over 5-6 weeks. It is suggested that patients with more than 2 foci involvement and those with body symptoms should receive the combination therapy.

  14. Giant granuloma gravidarium of the oral cavity.

    Science.gov (United States)

    Krishnan, Balasubramanian; Arunprasad, Gnanasekaran; Madhan, Balasubramanian

    2014-04-08

    Oral health is affected by hormonal changes during pregnancy but is usually neglected by both the obstetrician and the patient during follow-up visits. Gingival enlargement is one of the most common oral lesions seen during pregnancy. Rarely, gingival enlargement can be very big, significantly affecting maternal nutrition and impairing haemodynamic status. A giant granuloma gravidarium and appropriate management strategies are discussed. Patients must be encouraged to undergo regular dental check-ups during pregnancy. Simple oral hygiene measures are highly effective in mitigating most oral lesions of pregnancy.

  15. CHAMP+: a powerful array receiver for APEX

    NARCIS (Netherlands)

    Kasemann, C.; Güsten, R.; Heyminck, S.; Klein, B.; Klein, T.; Philipp, S.D.; Korn, A.; Schneider, G.; Henseler, A.; Baryshev, A.; Klapwijk, T.M.

    2006-01-01

    CHAMP+, a dual-color 2 × 7 element heterodyne array for operation in the 450 μm and 350 μm atmospheric windows is under development. The instrument, which is currently undergoing final evaluation in the laboratories, will be deployed for commissioning at the APEX telescope in August this year. With

  16. Granuloma periapical: tratamiento convencional. Reporte de un caso

    Directory of Open Access Journals (Sweden)

    Natalia Patricia Harris Ortega

    2014-03-01

    Full Text Available Title: Periapical granuloma: conventional treatment. Case reportLos Granulomas radiculares son lesiones periapicales crónicas, consideradas secuelas directas de procesos infecciosos resultantes de la necrosis pulpar, extendiéndose hacia la región perirradicular. Los granulomas se pueden presentar por fallas en los tejidos duros, resultantes de caries, fracturas y procedimientos quirúrgicos. Se realizó tratamiento de endodoncia convencional con preparación invertida a paciente de 15 años con diagnóstico de Granuloma periapical (periodontitis apical asintomáticay su posterior recuperación de la lesión de órgano dentario 36. (DUAZARY 2013 No. 2, 141 - 144AbstractRoot granulomas are chronic periapical lesions, considered direct sequels of infectious processes resulting from pulp necrosis, extending into the periradicular region. The granulomas can occur due to failures in hard tissues, resulting from caries, fractures and surgical procedures. A conventional endodontic treatment was done with crown down technique in a patient of 15 years old with a diagnosis of periapical granuloma (chronic nonsuppurative apical periodontitis and subsequent recovery from injury in tooth 36.Keywords: periapical granuloma; periapical periodontitis (MESH Database.

  17. Synthetic fiber "Teddy Bear" conjunctival granuloma; A case report

    Directory of Open Access Journals (Sweden)

    Roshanak Aliakbar-Navahi

    2015-01-01

    Conclusion: This is the first case report of synthetic fiber (teddy bear conjunctival granuloma from Iran. Despite its scarcity, ophthalmologists should consider this type of granuloma in the differential diagnoses of childhood conjunctival lesions especially when the lesion is unilateral and inferior.

  18. Aluminium allergy and granulomas induced by vaccinations for children

    DEFF Research Database (Denmark)

    Andersen, Rosa Marie O; Zachariae, Claus; Johansen, Jeanne Duus

    2014-01-01

    Vaccination with aluminium-adsorbed vaccines can induce aluminium allergy with persistent itching subcutaneous nodules at the injection site - vaccination granulomas. In this article we give an overview of childhood aluminium-adsorbed vaccines available in Denmark. Through literature studies we...... examine the incidence, the symptoms and the prognosis for the vaccination granulomas and the allergy. Finally we discuss the status in Denmark....

  19. Foreign Body Granuloma: A Diagnosis Not to Forget

    Directory of Open Access Journals (Sweden)

    I. El Bouchti

    2012-01-01

    The differential diagnosis for bony reaction to an unrecognised organic foreign body includes osteoid osteoma, chronic and acute osteomyelitis, tuberculosis granuloma, bone cyst, aneurysmal bone cyst, cortical fibrous defect, and neoplasm. We report the case of a boy suffering from a thorn inducing a lytic lesion of the fifth metatarsal that demonstrates the diagnosis difficulties of foreign body granuloma.

  20. [Aluminium allergy and granulomas induced by vaccinations for children].

    Science.gov (United States)

    Andersen, Rosa Marie Ø; Zachariae, Claus; Johansen, Jeanne Duus

    2015-04-27

    Vaccination with aluminium-adsorbed vaccines can induce aluminium allergy with persistent itching subcutaneous nodules at the injection site – vaccination granulomas. In this article we give an overview of childhood aluminium-adsorbed vaccines available in Denmark. Through literature studies we examine the incidence, the symptoms and the prognosis for the vaccination granulomas and the allergy. Finally we discuss the status in Denmark.

  1. Pyogenic granuloma, port-wine stain and pregnancy.

    Science.gov (United States)

    Rodins, Karl; Gramp, Dallas; James, Daniel; Kumar, Sandeep

    2011-11-01

    We present a novel case of pyogenic granuloma occurring within a port-wine stain in two sequential pregnancies at different sites. There was no history of precipitating events such as trauma. We discuss why a pyogenic granuloma may occur within a port-wine stain and how pregnancy may increase the likelihood of this occurring.

  2. Cholesterol Facts and Statistics

    Science.gov (United States)

    ... Blood Pressure Salt Million Hearts® WISEWOMAN Program High Cholesterol Facts Recommend on Facebook Tweet Share Compartir As ... the facts about high cholesterol [PDF-281K] . High Cholesterol in the United States 73.5 million adults ( ...

  3. Get Your Cholesterol Checked

    Science.gov (United States)

    ... Checked Print This Topic En español Get Your Cholesterol Checked Browse Sections The Basics Overview Cholesterol Test ... How often do I need to get my cholesterol checked? The general recommendation is to get your ...

  4. Dietary Fat and Cholesterol

    Science.gov (United States)

    ... Conditions Nutrition & Fitness Emotional Health Dietary Fat and Cholesterol Posted under Health Guides . Updated 7 March 2017. + ... saturated fat found in red meat. What is cholesterol? Cholesterol is a fatlike substance that’s found in ...

  5. High Blood Cholesterol Prevention

    Science.gov (United States)

    ... Million Hearts® WISEWOMAN Program Prevention and Management of High LDL Cholesterol: What You Can Do Recommend on ... like eating a healthy diet, can help prevent high cholesterol. High low-density lipoprotein (LDL) cholesterol increases ...

  6. Cholesterol lowering, low cholesterol, and mortality.

    Science.gov (United States)

    LaRosa, J C

    1993-10-01

    Cholesterol lowering in both primary and secondary prevention has been clearly demonstrated to lower coronary morbidity and, in secondary prevention, to lower coronary mortality as well. Putative dangers of cholesterol lowering remain unproven. Population studies linking low cholesterol to noncoronary mortalities do not demonstrate cause-and-effect relations. In fact, based on current studies, the opposite is more likely to be the case. Neither gender nor age should automatically exclude persons from cholesterol screening. Drug intervention, however, should be used conservatively, particularly in young adults and the elderly. Drugs should be used only after diet and lifestyle interventions have failed. The evidence linking high blood cholesterol to coronary atherosclerosis and cholesterol lowering to its prevention is broad-based and definitive. Concerns about cholesterol lowering and spontaneously low cholesterols should be pursued but should not interfere with the implementation of current public policies to reduce the still heavy burden of atherosclerosis in Western society.

  7. Canine Oral Eosinophilic Granuloma Treated with Electrochemotherapy

    Directory of Open Access Journals (Sweden)

    Matías Nicolás Tellado

    2014-01-01

    Full Text Available A case of a canine oral eosinophilic granuloma in a 14-year-old female crossbred is described. The dog was presented with a history of ptyalism, halitosis, local pain, decreased appetite, and blood staining noted on food and water bowls. Clinical, hematologic, and biochemical examinations, abdominal ultrasonography, and 3-view chest radiographs were performed, and no metastases were found. Histopathologic examination of two 6 mm punch biopsies from the oral lesion revealed the presence of eosinophilic granulomatous lesions in the submucosa. After treatment with corticosteroids and wide spectrum antibiotics no significant changes in clinical signs and lesion size were observed. Electrochemotherapy (ECT, a novel tumor treatment routinely used for cutaneous and subcutaneous tumors in human patients in the European Union since 2006, was used to treat the eosinophilic granuloma. The procedure was performed under general anesthesia, followed by intravenous administration of bleomycin. Six weeks after treatment a complete response with disappearance of the mass and improvement of clinical signs were observed.

  8. Granuloma eosinofílico orbitário Orbital eosinophilic granuloma

    Directory of Open Access Journals (Sweden)

    Eduardo Ferrari Marback

    2008-06-01

    Full Text Available OBJETIVO: Relatar, de forma retrospectiva, a experiência no diagnóstico e tratamento do granuloma eosinofílico da órbita em serviço de referência. MÉTODOS: Identificados os pacientes com diagnóstico de granuloma eosinofílico orbitário, no Registro do Laboratório de Patologia Ocular do Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, no período entre 1974 e 2004. Coletados dados referentes ao diagnóstico, tratamento e realizada revisão das lâminas coradas pela hematoxilina e eosina. RESULTADOS: Foram identificados 3 casos com idade de 1, 6 e 11 anos. Em nenhum caso o diagnóstico de granuloma eosinofílico foi aventado pré-operatoriamente. Todos pacientes foram submetidos a biópsia, exibindo aspecto anatomopatológico típico. Em um dos casos, após a biópsia, havia tomografia computadorizada da órbita disponível, exibindo padrão característico. Todos os pacientes foram tratados com corticoesteróides sistêmicos, com resolução do tumor orbitário. CONCLUSÃO: Trata-se de doença rara, de difícil diagnóstico clínico sem avaliação radiológica. Apesar da grande destruição tecidual, apresenta boa resposta ao tratamento com corticoesteróides.PURPOSE:To report the retrospective experience of a reference center in the diagnosis and treatment of orbital eosinophilic granuloma. METHODS: A review of the files in the Opththalmic Pathology Laboratory, of the Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, between 1974 and 2004, was conducted to identify cases of orbital eosinophilic granuloma. Data of diagnosis and treatment were collected. The hematoxilin and eosin stained sections were reviewed. RESULTS: Three cases with ages of 1, 6 and 11 years were retrieved. In none of them the clinical diagnosis of eosinophilic granuloma was suspected. All patients underwent diagnostic biopsy with characteristic histological aspect. In one case a orbital computed

  9. Mycotic bovine nasal granuloma Granuloma micótico nasal bovino

    Directory of Open Access Journals (Sweden)

    Ismael Alejandro Conti Díaz

    2003-06-01

    Full Text Available A case of mycotic bovine nasal granuloma in a 10 year-old Jersey cow, produced by Drechslera halodes is presented. Histopathological sections showed abundant hyaline and pigmented extra and intracellular fungal structures together with a polymorphic cellular granuloma formed by neutrophils, lymphocytes, plasmocytes, histiocytes and giant cells of the Langhans type. It is the first case of mycotic bovine nasal granuloma recognized in Uruguay although this disease seems to be frequent according to the opinion of veterinarian specialists. Another similar clinical case also in a Jersey cow from the same dairy house with an intense cellular infiltrate rich in eosinophils without granulomatous image, together with extracellular hyaline and fuliginous fungal forms, is also referred for comparative purposes. Geotrichum sp. was isolated. The need of an early diagnosis and treatment of the disease is stressed.É apresentado caso de granuloma micótico nasal bovino, em vaca Jersey, com 10 anos de idade, produzido por Drechslera halodes. Cortes histopatológicos mostraram abundantes estruturas fúngicas hialinas e pigmentadas extra e intracelulares junto com granuloma polimorfo celular formado por neutrófilos, linfócitos, plasmócitos, histiócitos e células gigantes de Langhans. É o primeiro caso de granuloma micótico nasal bovino diagnosticado no Uruguai embora esta doença pareça ser freqüente de acordo com a opinião de veterinários especializados. Outro caso clínico semelhante, também em vaca Jersey da mesma fazenda de criação de gado leiteiro, com intenso infiltrado celular rico em eosinófilos, sem imagem granulomatosa, junto com formas fúngicas fuliginosas hialinas extra celulares é também relatado para fins de comparação. Geotrichum sp. foi isolado. A necessidade de diagnóstico precoce e tratamento da doença é enfatizada.

  10. Granuloma telangiectásico en cavidad oral Telangiecticum granuloma in oral cavity

    Directory of Open Access Journals (Sweden)

    M. Rebolledo Cobos

    2010-10-01

    Full Text Available El granuloma telangiectásico es un tumor de origen epitelial benigno que tiene predilección en cavidad oral a nivel de la encía, de contenido vascular y de crecimiento rápido, cuya etiología es atribuible a irritantes locales como placa bacteriana, calculo, traumatismos, presencia de restos radiculares y otros como la presencia de cuerpos extraños. Esta patología es muy semejante a granuloma periférico de células gigantes, hemangioma capilar, carcinoma epidermoide exofítico, sarcoma de Kaposi, nevos pigmentados, melanomas, fibroma periférico y otros tumores mesenquimatosos. A continuación se presenta caso clínico de una paciente femenina de 71 años de edad quien acude al servicio de Estomatología y Cirugía Oral de la facultad de odontología de la Universidad de Cartagena por presentar una lesión tumoral en maxilar inferior que sangraba con facilidad el cual abarcaba una extensión desde órgano dental 34 a órgano dental 43. Se procedió a realizar la escisión quirúrgica de la lesión tumoral y se envió a patología donde se confirmó diagnostico de granuloma telangiectásico.The telangiecticum granuloma is a benign tumor of epithelial origin with preference for oral cavity, specially at the gum. It is rich in vascular content and rapid growth. It´s aetiology is attributable to local irritants such as bacterial plaque, dental calculus, trauma, and presence of root, others such as the presence of foreign bodies. This pathology is very similar to the peripheral giant cell granuloma, capillary hemangioma, exophytic squamous cell carcinoma, Kaposi's sarcoma, snowy pigmented melanomas, peripheral fibroma and mesenchymal tumors. In present paper is showed a clinical case of a female 71 years old who goes to the service of Stomatology and Oral Surgery at the School of Dentistry, University of Cartagena for presenting a tumor in jaw that was bleeding easily covering a body length from teeth number 34 to teeth number 43. We

  11. A rare case of generalized pyogenic granuloma: a case report.

    Science.gov (United States)

    Shivaswamy, Sumanth; Siddiqui, Nazia; Jain, Sanjay A; Koshy, Ajit; Tambwekar, Sonal; Shankar, Akhil

    2011-06-01

    Gingival enlargement is defined as an overgrowth or increase in size of the gingiva. Enlargement can be of many types depending on etiologic factors like inflammation, drug-induced effects, neoplasm, hormonal imbalance, and systemic involvement (leukemia, etc). Drugs and hormonal imbalance are the most common causes of gingival enlargement. Nonspecific conditioned enlargement, or pyogenic granuloma, is considered an exaggerated conditioned response to minor trauma or chronic irritation. Pyogenic granuloma occurring in the oral cavity is a common phenomenon. However, simultaneously occurring generalized pyogenic granuloma in the oral cavity is a rare entity. Generalized pyogenic granuloma on the back and skin have been reported. This is the first case report of generalized pyogenic granuloma in the oral cavity. A 19-year-old male patient reported with a complaint of difficulty in mastication and generalized swelling of the gingiva that developed within a span of 15 days. Family and systemic history were noncontributory. Based on the clinical findings, histopathology report, and immunohistochemistry result, the patient was diagnosed with generalized pyogenic granuloma. Scaling and root planing were performed as the first phase of therapy followed by external bevel gingivectomy. The patient was followed for 3 months. The patient was advised to visit the clinic for regular maintenance visits for 1 year, as pyogenic granuloma has a tendency to recur.

  12. Rhabdomyolysis Presenting as Orbital Apex Syndrome.

    Science.gov (United States)

    Wi, Jae Min; Chi, Mijung

    2016-01-01

    Rhabdomyolysis is a condition in which striated muscle tissue breaks down rapidly and releases muscular cell constituents into extracellular fluid and the circulation. Renal symptoms, such as acute renal failure, are major complications of rhabdomyolysis. However, no previous report of rhabdomyolysis associated with orbital complication has been issued. Here, we report the first patient of rhabdomyolysis presenting as orbital apex syndrome. A 66-year-old man presented with right periorbital swelling with erythematous patches and conjunctival chemosis. In addition, swelling, redness, and vesicles were observed in both lower legs. He was found in a drunken state with the right side of his face pressed against a table. Ophthalmic examination showed right eye fixation in all directions and ischemic change of retina. Blood testing showed elevated muscle enzyme associated with muscle destruction. And computed tomography of the orbit showed swelling of right extraocular muscles and crowding of right orbital apex. Under a diagnosis of rhabdomyolysis-associated orbital apex syndrome and central retinal artery occlusion, intravenous steroid and antibiotics therapy with intraocular pressure-lowering topicals were begun. Clinical presentation, treatment course, and follow-up are discussed.

  13. Data acquisition with the APEX hyperspectral sensor

    Directory of Open Access Journals (Sweden)

    Vreys Kristin

    2016-03-01

    Full Text Available APEX (Airborne Prism EXperiment is a high spectral and spatial resolution hyperspectral sensor developed by a Swiss-Belgian consortium on behalf of the European Space Agency. Since the acceptance of the instrument in 2010, it has been operated jointly by the Flemish Institute for Technological Research (VITO, Mol, Belgium and the Remote Sensing Laboratories (RSL, Zurich, Switzerland. During this period, several flight campaigns have been performed across Europe, gathering over 4 Terabytes of raw data. Following radiometric, geometric and atmospheric processing, this data has been provided to a multitude of Belgian and European researchers, institutes and agencies, including the European Space Agency (ESA, the European Facility for Airborne Research (EUFAR and the Belgian Science Policy Office (BelSPO. The applications of APEX data span a wide range of research topics, e.g. landcover mapping (mountainous, coastal, countryside and urban regions, the assessment of important structural and (biophysical characteristics of vegetative and non-vegetative species, the tracing of atmospheric gases, and water content analysis (chlorophyll, suspended matter. Recurrent instrument calibration, accurate flight planning and preparation, and experienced pilots and instrument operators are crucial to successful data acquisition campaigns. In this paper, we highlight in detail these practical aspects of a typical APEX data acquisition campaign.

  14. Endovascular treatment for ruptured basilar apex aneurysm

    Directory of Open Access Journals (Sweden)

    Sheng LI

    2011-12-01

    Full Text Available Objective The present study aims to prove the effectiveness and safety of endovascular interventional therapy for ruptured basilar apex aneurysm.Methods The imaging data,methods of endovascular treatment,and clinical results of 12 patients suffering from ruptured basilar apex aneurysms from January 2001 to December 2009 were retrospectively analyzed.The 12 patients were composed of 5 males and 7 females,and their ages ranged from 21 years to 58 years.Results Nine patients suffered from narrow-necked aneurysms,which were directly embolized,and the other three suffered from wide-necked aneurysms,which were embolized using a microstent.Eight aneurysms were completely embolized,and the other four were partly embolized.No rebleeding occurred within the follow-up period of 12 months to 36 months,and all patients recovered well without neurological defects.Conclusions Therefore,endovascular treatment for ruptured basilar apex aneurysm is a semi-invasive,safe,and effective method.

  15. Trauma-related papular granuloma annular.

    Science.gov (United States)

    Hu, Stephanie W; Kaplan, Jennifer; Patel, Rishi R; Kamino, Hideko

    2013-12-16

    Granuloma annulare (GA) is a benign, granulomatous disease with several clinical manifestations, which include localized, generalized, perforating, subcutaneous, patch, papular, and linear forms. We report a case of papular GA of the dorsal aspects of the hands that arose after repeated, direct trauma to the site of subsequent involvement. Although multiple etiologies for GA have been proposed, which include ultraviolet light, arthropod bites, trauma, tuberculin skin tests, viral infections, and PUVA photochemotherapy, the underlying pathogenesis of the disorder remains unclear. However, owing to the key histopathologic findings of focal collagen and elastic fiber degeneration and mucin deosition in GA, it is not surprising that cutaneous trauma may have played a role in connective tissue injury, subsequent degeneration, and the production of a granulomatous response with increased mucin deposition.

  16. PERIPHERAL GIANT CELL GRANULOMA- A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Ashutosh Agrawal

    2013-07-01

    Full Text Available The peripheral giant cell granuloma (PGCG is a benign inflammatory hyperplastictype of lesion of unknown etiology occurring in gingiva or alveolar ridge. It normally presentsas a soft tissue purplish-red nodule consisting of multinucleated giant cells in a background ofmononuclear stromal cells and extravasated red blood cells. A 75 years old male patientreported with a chief complaint of pain and swelling in lower right back region of mouth. Onintra-oral examination the swelling was red, firm and sessile with smooth surface texture. Theorthopantomogram (OPG revealed a well-demarcated radiolucency extending from distalaspect of mandibular canine to mesial aspect of mandibular first molar. The cone beamcomputed tomography also showed the features suggestive of soft tissue lesion causingcupping resorption of mandible. Excisional biopsy was performed under local anaesthesiaand tissue was examined histopathologically. The lesion was diagnosed as PGCG afterthorough clinical, radiologic and histopathologic examination.

  17. Aluminium hydroxide-induced granulomas in pigs

    DEFF Research Database (Denmark)

    Valtulini, S; Macchi, C; Ballanti, P

    2005-01-01

    The effect of intramuscular injection of 40 mg/2 ml aluminium hydroxide in the neck of pigs was examined in a number of ways. The investigation followed repeated slaughterhouse reports, according to which 64.8% of pigs from one particular farm were found at slaughter to have one or more nodules...... in the muscles of the neck (group slaughtered). The pigs had been injected with a vaccine containing 40 mg/2 ml dose of aluminium hydroxide as adjuvant. Research consisted of two phases: first, an epidemiological study was carried out, aimed at determining the risk factors for the granulomas. The results...... and adjuvant) to pigs inoculated twice with apyrogenic bi-distilled water (group water) and to pigs inoculated once with the adjuvant and once with apyrogenic bi-distilled water (group adjuvant/water). Both studies agreed in their conclusions, which indicate that the high amount of aluminium hydroxide...

  18. Keloidal granuloma faciale with extrafacial lesions

    Directory of Open Access Journals (Sweden)

    Verma Rajesh

    2005-01-01

    Full Text Available Granuloma faciale (GF is a rare cutaneous disorder characterized by one to several soft, erythematous to livid papules, plaques or nodules, usually occurring on the face. Extrafacial lesions are uncommon. A 52-year-old lady with multiple asymptomatic, variously sized brownish-black colored, firm, sharply circumscribed plaques resembling keloids on both cheeks and extrafacial lesions on the right arm and the right breast is presented for its unusual keloidal appearance and typical histopathological findings. She failed to respond to oral dapsone 100 mg daily administered for 3 months. Local infiltration of triamcinolone combined with cryotherapy led to only partial flattening of the lesions. All the skin lesions were excised surgically followed by flap transfer grafting on both cheeks. The cosmetic outcome was highly satisfactory.

  19. Cooking for Lower Cholesterol

    Science.gov (United States)

    ... Venous Thromboembolism Aortic Aneurysm More Cooking for Lower Cholesterol Updated:Oct 28,2016 A heart-healthy eating ... content was last reviewed on 04/21/2014. Cholesterol • Home • About Cholesterol • Why Cholesterol Matters • Understand Your ...

  20. A mycosis-like granuloma of fish

    Science.gov (United States)

    Wood, E.M.; Yasutake, W.T.; Lehman, W.L.

    1955-01-01

    Mycoses of systemic distribution are rarely observed in fresh-water fish in this country. In a recent review of atypical cell growths in fishes, Nigrelli cited the only known instance of a mycetoma in a North American fresh-water fish which occurred in the head of fingerling landlocked salmon from an Idaho hatchery. The fungus associated with this granuloma was characterized by a branching septate mycelium. Rucker reported a streptomycete which was pathogenic to blueblack salmon. This organism produced internal nodules containing masses of hyphae but no inflammatory response. A pathogenic fungus has been observed frequently in marine fish, however, and in both marine and fresh-water fish in Europe. This organism was tentatively classified as a Phycomycete in or near the order Chytridiales and was assigned to the genus and species Ichthyophonus hoferi, later reclassified as Ichthyosporidium hoferi. The graduloma described in this report occurs in fresh-water trout and is apparently caused by a budding, yeast-like form with no hyphae which evokes a tremendous inflammatory reaction. Morphologically, the organism does not resemble the previously described Ichthyosporidium. The lesions were first seen accidentally in sections prepared from a diplobacillus infection of brook trout termed “kidney disease.” Subsequently, the granuloma was observed in three widely separated infections involving the diplobacillus in each instance.The histological material was received in a fixed condition; thus, no cultural data was available and the nomenclature and classification of the mycotic organism were not attempted. The present distribution of the disease, however, with its potential threat to domestic fish populations, seemed to warrant a description and discussion of the disease. Efforts are in progress to culture the organism.

  1. A Case of Typhoid Fever with Hepatic Granulomas and Enteritis

    Directory of Open Access Journals (Sweden)

    Shraddha Narechania

    2015-01-01

    Full Text Available The common histopathologic hepatic manifestations in patients infected with Salmonella include cloudy swelling and balloon degeneration with vacuolation of the hepatocytes and steatosis. Hepatic granulomas are a very rare finding, so far reported in very few cases. We report a 64-year-old patient with Salmonella enteritis who was found to have multiple 1.4 to 1.6 cm hypoechoic liver masses on ultrasound of the abdomen which on biopsy revealed hepatic granulomas. This case highlights the importance of keeping the differential diagnosis of Salmonella typhi (S. typhi in mind in a patient with hepatic granulomas.

  2. Mercury poisoning from intravenous injection: treatment by granuloma resection.

    Science.gov (United States)

    Netscher, D T; Friedland, J A; Guzewicz, R M

    1991-06-01

    Intravenous injection of mercury is a rare event. Mercury administered by this route may have several different consequences. In addition to elevated serum mercury levels, the diagnosis may be made by radiographic detection of metallic densities in the chest and at the sites of injection. Death due to mercury intoxication is unusual. Impairment of renal and hepatic function may occur. Our patient presented with gingivitis and a dentoalveolar abscess. Dense granulomas occur at the sites of injection. Treatment for these patients should include granuloma excision as the benefit of chelating agents, for chronic mercury intoxication is questionable. Skin and granuloma resection may leave vital structures exposed, necessitating flap coverage.

  3. Reverse cholesterol transport revisited

    Institute of Scientific and Technical Information of China (English)

    Astrid; E; van; der; Velde

    2010-01-01

    Reverse cholesterol transport was originally described as the high-density lipoprotein-mediated cholesterol flux from the periphery via the hepatobiliary tract to the intestinal lumen, leading to fecal excretion. Since the introduction of reverse cholesterol transport in the 1970s, this pathway has been intensively investigated. In this topic highlight, the classical reverse cholesterol transport concepts are discussed and the subject reverse cholesterol transport is revisited.

  4. Suture granuloma of the stomach following total colectomy.

    Science.gov (United States)

    Belleza, N A; Lowman, R M

    1978-04-01

    Stitch granuloma is rarely a consideration in the differential diagnosis of stomach lesions. This report documents the occurrence of a granulomatous mass of gastric origin simulating an intramural tumor.

  5. Eosinophilic granuloma in the anterior mandible mimicking radicular cyst

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Byung Do; Lee, Wan; Lee, Jun [College of Dentistry, Wonkwang University, Iksan (Korea, Republic of); Son, Hyun Jin [Dept. of Pathology, School of Medicine, Eulji University, Daejeon (Korea, Republic of)

    2013-06-15

    Eosinophilic granuloma is a common expression of Langerhans cell histiocytosis and corresponds with typical bone lesions. The radiographic appearance of eosinophilic granuloma in the jaw is variable and not specific. It may resemble periodontitis, radicular cyst, or malignancies. The purpose of this report is to describe the characteristic radiographic features of eosinophilic granuloma of a 39-year-old male. The lesion in the anterior mandible was first diagnosed as radicular cyst because the radiographic findings were ovoid radiolucent lesion with well-defined border. However, careful interpretation revealed a non-corticated border and floating tooth appearance that were the characteristic radiographic features for the differential diagnosis. Early clinical signs of eosinophilic granuloma can occur in the jaw and a bony destructive lesion might be mistaken for periodontitis or an odontogenic cystic lesion; therefore, careful interpretation of radiographs should be emphasized.

  6. PERIPHERAL GIANT CELL GRANULOMAS OF ORAL CAVITY: OUR EXPERIENCE

    Directory of Open Access Journals (Sweden)

    Kamal

    2015-07-01

    Full Text Available Peripheral giant cell granuloma or the so - called “giant cell epulis” is the most common oral giant cell lesion. Peripheral giant cell granuloma (PGCG is an infrequent exophytic lesion of the oral cavity, also known as giant - cell hyperplasia, osteoclastoma, or giant cell reparative granuloma. Lesions vary in appearance from smooth, regularly outlined masses to irregularly shaped, multilobulated protuberances with surface indentations. Ulcerations of the margin are occasionally seen . This lesion probably does not represent a true neoplasm, but rather may be reactive in nature, believed to be stimulated by local irritation or trauma, but the cause is not certainly known. The aim in publishing this study is to present the clinical, histopathological features and treatment of peripheral giant cell granulomas of various sizes in different age groups in jaws

  7. Granuloma Transplantation: An Approach to Study Mycobacterium-Host Interactions

    Directory of Open Access Journals (Sweden)

    Jeff Scott Harding

    2011-12-01

    Full Text Available The host-pathogen biology during infection with Mycobacterium tuberculosis is incredibly complex and despite accelerating progress in research, remains poorly understood. Our limited understanding hinders the development of new drugs, next generation vaccines, and novel therapies. The granuloma is the site where mycobacteria are both controlled and allowed to persist, but it remains one of the least studied aspects of the host-pathogen relationship. Here, we review the development, application, potential uses, and limitations of a novel model of granuloma transplantation as a tool to study specific host-pathogen interactions that have been difficult to probe. Application of this new model has already contributed to our understanding of granuloma cell traffic, repopulation, and the relationship between systemic immunity and mycobacteria-containing granulomas. The data collected highlight the dynamic interaction between systemic and local immune processes and support a paradigm that defines the granuloma as a highly dynamic structure. Granuloma transplantation also has special potential as a novel latency model that can contribute to our understanding of host protection factors and bacterial mutants, and serve as a platform for drug testing.

  8. Oral pyogenic granuloma: one reactive hyperplastic lesion of the gingiva

    Directory of Open Access Journals (Sweden)

    Suryakanta Narendra

    2015-12-01

    Full Text Available The term pyogenic granuloma refers to a disorder of the skin, oral mucosa and the gingiva, that usually presents as a solitary polypoid capillary hemangioma like growth often resulting from local irritation and trauma. It is manifested as an inflammatory response with similar characteristics to those of a granuloma. Different terminologies are used for this lesion by different investigators like, benign vascular tumor of pregnancy, granuloma pediculatum benignum, granuloma pyogenicum, Crocker and hartzells disease. This lesion even if looks like a tumor, is non neoplastic in nature and present itself in various clinical and histological forms. Lack of association of pyogenic etiopathogenesis does not justify the use of terminology of pyogenic granuloma. In this article we are presenting a case series of pyogenic granuloma in different locations giving an insight into their myriad of etiologies and presenting the review of literature for its inclusion as one classified hyperplastic lesion of oral cavity. [Int J Res Med Sci 2015; 3(12.000: 3863-3868

  9. Chronic hepatitis C is a common associated with hepatic granulomas

    Institute of Scientific and Technical Information of China (English)

    Ned Snyder; Juan G Martinez; Shu-Yuan Xiao

    2008-01-01

    AIM: To determine the most frequent etiologies of hepatic epithelioid granulomas, and whether there was an association with chronic hepatitis C virus (HCV). METHODS: Both a retrospective review of the pathol-ogy database of liver biopsies at our institution from 1996 through 2006 as well as data from a prospective study of hepatic fibrosis markers and liver biopsies from 2003 to 2006 were reviewed to identify cases of hepatic epithelioid granulomas. Appropriate charts, liver biopsy slides, and laboratory data were reviewed to determine all possible associations. The diagnosis of HCV was based on a positive HCV RNA. RESULTS: There were 4578 liver biopsies and 36 (0.79%) had at least one epithelioid granuloma. HCV was the most common association. Fourteen patients had HCV, and in nine, there were no concurrent condi-tions known to be associated with hepatic granulomas. Prior interferon therapy and crystalloid substances from illicit intravenous injections did not account for the finding. There were hepatic epithelioid granulomas in 3 of 241 patients (1.24%) with known chronic HCV enrolled in the prospective study of hepatic fibrosis markers. CONCLUSION: Although uncommon, hepatic granu-Iomas may be part of the histological spectrum of chronic HCV. When epithelioid granulomas are found on the liver biopsy of someone with HCV, other clini-cally appropriate studies should be done, but if nothing else is found, the clinician can be comfortable with an HCV association.

  10. Neurothekeoma of petrous apex: A rare entity

    Directory of Open Access Journals (Sweden)

    Zarina Abdul Assis

    2013-01-01

    Full Text Available Intraosseous nerve sheath tumors are very rare tumors accounting for lesser than 0.2% of primary bone tumors. We present an 18-year-old female who presented with left facial paresis for the last 1 year. Magnetic resonance imaging (MRI demonstrated expansile, multiseptated, enhancing bony lesion in the left petrous apex. There was also abnormal enhancement of the 7-8 th nerve complex within the internal auditory canal. Tumor was excised by subtemporal extradural approach. The lesion was diagnosed as intraosseous neurothekeoma on histopathology. This is an extremely rare tumor and its MRI appearance in this location is being described for the first time in literature.

  11. Computed tomography findings in patients with pulmonary hyalinizing granulomas: a case report; Granulomas hialinizantes pulmonares: aspectos na tomografia computadorizada - relato de caso

    Energy Technology Data Exchange (ETDEWEB)

    Marchiori, Edson [Universidade Federal Fluminense, Niteroi, RJ (Brazil). Dept. de Radiologia]. E-mail: edmarchiori@zipmail.com.br; Valiante, Paulo Marcos [Universidade Federal, Rio de Janeiro, RJ (Brazil). Faculdade de Medicina. Dept. de Patologia; Correia, Ana Helena Pereira; Carneiro, Leonardo Hoehl; Caldas, Carolina Rodrigues [Hospital Universitario Clementino Fraga Filho, Rio de Janeiro, RJ (Brazil). Servico de Anatomia Patologica; Souza Junior, Arthur Soares [Faculdade de Medicina de Sao Jose do Rio Preto (FAMERP), SP (Brazil). Dept. de Radiologia

    2003-12-01

    Hyalinizing granulomas are benign fibrotic lesions that generally present multiple nodules seen on radiological examinations, which are frequently cavitary and/or calcified lesions. We report a case of a 28 year-old-woman with hyalinizing granulomas probably secondary to a previous tuberculosis infection. Hyalinizing granulomas should be included in the differential diagnosis of patients with multiple pulmonary nodules. (author)

  12. Surface Free Energy Determination of APEX Photosensitive Glass

    OpenAIRE

    William R. Gaillard; Emanuel Waddell; Williams, John D.

    2016-01-01

    Surface free energy (SFE) plays an important role in microfluidic device operation. Photosensitive glasses such as APEX offer numerous advantages over traditional glasses for microfluidics, yet the SFE for APEX has not been previously reported. We calculate SFE with the Owens/Wendt geometric method by using contact angles measured with the Sessile drop technique. While the total SFE for APEX is found to be similar to traditional microstructurable glasses, the polar component is lower, which i...

  13. Intraosseous Schwannoma of the Petrous Apex.

    Science.gov (United States)

    Tamura, Ryota; Takahashi, Satoshi; Kohno, Maya; Kameyama, Kaori; Fujiwara, Hirokazu; Yoshida, Kazunari

    2015-07-01

    Background and Importance Intraosseous schwannoma is a relatively rare clinical entity that typically arises in vertebral and mandibular bone. Intraosseous schwannoma located entirely within the petrous bone is exceedingly rare, and only two cases have been reported to date. Clinical Presentation A 47-year-old Asian man was referred to our hospital with a chief complaint of double vision. Neurologic examination revealed left abducens nerve palsy. Radiologic imaging showed a 35-mm osteolytic expansive lesion located in the left petrous apex. We made a preoperative diagnosis of chondrosarcoma and performed surgical resection. Surgery was performed via a left subtemporal epidural approach with anterior petrosectomy. The histopathologic diagnosis of the tumor was schwannoma. Schwannoma arising from cranial nerves was excluded from intraoperative findings in conjunction with the results for cranial nerves, and intraosseous schwannoma was diagnosed. Postoperative course was uneventful, and abducens nerve palsy resolved immediately after surgery. Conclusion The differential diagnosis of intraosseous schwannoma should be considered for an osteolytic mass lesion within the petrous apex. Subcapsular tumor removal was considered ideal in terms of preservation of the cranial nerves and vessels around the tumor.

  14. Geometric correction of APEX hyperspectral data

    Directory of Open Access Journals (Sweden)

    Vreys Kristin

    2016-03-01

    Full Text Available Hyperspectral imagery originating from airborne sensors is nowadays widely used for the detailed characterization of land surface. The correct mapping of the pixel positions to ground locations largely contributes to the success of the applications. Accurate geometric correction, also referred to as “orthorectification”, is thus an important prerequisite which must be performed prior to using airborne imagery for evaluations like change detection, or mapping or overlaying the imagery with existing data sets or maps. A so-called “ortho-image” provides an accurate representation of the earth’s surface, having been adjusted for lens distortions, camera tilt and topographic relief. In this paper, we describe the different steps in the geometric correction process of APEX hyperspectral data, as applied in the Central Data Processing Center (CDPC at the Flemish Institute for Technological Research (VITO, Mol, Belgium. APEX ortho-images are generated through direct georeferencing of the raw images, thereby making use of sensor interior and exterior orientation data, boresight calibration data and elevation data. They can be referenced to any userspecified output projection system and can be resampled to any output pixel size.

  15. Cholesterol testing and results

    Science.gov (United States)

    Cholesterol test results; LDL test results; VLDL test results; HDL test results; Coronary risk profile results; Hyperlipidemia- ... Some cholesterol is considered good and some is considered bad. Different blood tests can be done to measure each ...

  16. Controlling Cholesterol with Statins

    Science.gov (United States)

    ... For Consumers Home For Consumers Consumer Updates Controlling Cholesterol with Statins Share Tweet Linkedin Pin it More ... not, the following tips can help keep your cholesterol in check: Talk with your healthcare provider about ...

  17. Cholesterol - drug treatment

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000314.htm Cholesterol - drug treatment To use the sharing features on ... treatment; Hardening of the arteries - statin Statins for Cholesterol Statins reduce your risk of heart disease, stroke, ...

  18. Cholesterol and public policy.

    Science.gov (United States)

    LaRosa, J C

    1994-08-01

    Cholesterol lowering in both primary and secondary prevention has been clearly demonstrated to lower coronary morbidity and, in secondary prevention, to lower coronary mortality as well. Putative dangers of cholesterol lowering remain unproven. Population studies linking low cholesterol to noncoronary mortalities do not demonstrate cause-and-effect relations. In fact, based on current studies, the opposite is more likely to be the case. Neither gender nor age should automatically exclude persons from cholesterol screening. Drug intervention, however, should be used conservatively, particularly in young adults and the elderly. Drugs should be used only after diet and lifestyle interventions have failed. The evidence linking high blood cholesterol to coronary atherosclerosis and cholesterol lowering to its prevention is broad-based and definitive. Concerns about cholesterol lowering and spontaneously low cholesterols should be pursued but should not interfere with the implementation of current public policies to reduce the still heavy burden of atherosclerosis in Western society.

  19. High blood cholesterol levels

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000403.htm High blood cholesterol levels To use the sharing features ... stroke, and other problems. The medical term for high blood cholesterol is lipid disorder, hyperlipidemia, or hypercholesterolemia. ...

  20. Cholesterol oxides inhibit cholesterol esterification by lecithin: cholesterol acyl transferase

    Directory of Open Access Journals (Sweden)

    Eder de Carvalho Pincinato

    2009-09-01

    Full Text Available Cholesterol oxides are atherogenic and can affect the activity of diverse important enzymes for the lipidic metabolism. The effect of 7β-hydroxycholesterol, 7-ketocholesterol, 25-hydroxycholesterol, cholestan-3β,5α,6β-triol,5,6β-epoxycholesterol, 5,6α-epoxycholesterol and 7α-hydroxycholesterol on esterification of cholesterol by lecithin:cholesterol acyl transferase (LCAT, EC 2.3.1.43 and the transfer of esters of cholesterol oxides from high density lipoprotein (HDL to low density lipoproteins (LDL and very low density lipoproteins (VLDL by cholesteryl ester transfer protein (CETP was investigated. HDL enriched with increasing concentrations of cholesterol oxides was incubated with fresh plasma as source of LCAT. Cholesterol and cholesterol oxides esterification was followed by measuring the consumption of respective free sterol and oxysterols. Measurements of cholesterol and cholesterol oxides were done by gas-chromatography. 14C-cholesterol oxides were incorporated into HDL2 and HDL3 subfractions and then incubated with fresh plasma containing LCAT and CETP. The transfer of cholesterol oxide esters was followed by measuring the 14C-cholesterol oxide-derived esters transferred to LDL and VLDL. All the cholesterol oxides studied were esterified by LCAT after incorporation into HDL particles, competing with cholesterol by LCAT. Cholesterol esterification by LCAT was inversely related to the cholesterol oxide concentration. The esterification of 14C-cholesterol oxides was higher in HDL3 and the transfer of the derived esters was greater from HDL2 to LDL and VLDL. The results suggest that cholesterol esterification by LCAT is inhibited in cholesterol oxide-enriched HDL particles. Moreover, the cholesterol oxides-derived esters are efficiently transferred to LDL and VLDL. Therefore, we suggest that cholesterol oxides may exert part of their atherogenic effect by inhibiting cholesterol esterification on the HDL surface and thereby disturbing

  1. What Your Cholesterol Levels Mean

    Science.gov (United States)

    ... Disease Venous Thromboembolism Aortic Aneurysm More What Your Cholesterol Levels Mean Updated:Apr 3,2017 Keeping your ... content was last reviewed on 04/21/2014. Cholesterol • Home • About Cholesterol Introduction Good vs. Bad Cholesterol ...

  2. Home-Use Tests - Cholesterol

    Science.gov (United States)

    ... Medical Procedures In Vitro Diagnostics Home Use Tests Cholesterol Share Tweet Linkedin Pin it More sharing options ... a home-use test kit to measure total cholesterol. What cholesterol is: Cholesterol is a fat (lipid) ...

  3. Modeling Granulomas in Response to Infection in the Lung.

    Directory of Open Access Journals (Sweden)

    Wenrui Hao

    Full Text Available Alveolar macrophages play a large role in the innate immune response of the lung. However, when these highly immune-regulatory cells are unable to eradicate pathogens, the adaptive immune system, which includes activated macrophages and lymphocytes, particularly T cells, is called upon to control the pathogens. This collection of immune cells surrounds, isolates and quarantines the pathogen, forming a small tissue structure called a granuloma for intracellular pathogens like Mycobacterium tuberculosis (Mtb. In the present work we develop a mathematical model of the dynamics of a granuloma by a system of partial differential equations. The 'strength' of the adaptive immune response to infection in the lung is represented by a parameter α, the flux rate by which T cells and M1 macrophages that immigrated from the lymph nodes enter into the granuloma through its boundary. The parameter α is negatively correlated with the 'switching time', namely, the time it takes for the number of M1 type macrophages to surpass the number of infected, M2 type alveolar macrophages. Simulations of the model show that as α increases the radius of the granuloma and bacterial load in the granuloma both decrease. The model is used to determine the efficacy of potential host-directed therapies in terms of the parameter α, suggesting that, with fixed dosing level, an infected individual with a stronger immune response will receive greater benefits in terms of reducing the bacterial load.

  4. Peripheral giant cell granuloma: A review of 123 cases

    Directory of Open Access Journals (Sweden)

    Niloofar Shadman

    2009-01-01

    Full Text Available Background: Peripheral giant cell granuloma is one of the reactive hyperplastic lesions of the oral cavity, which originates from the periosteum or periodontal membrane following local irritation or chronic trauma. The purpose of this study was to present the clinical characteristics of peripheral gi-ant cell granuloma in a group of Iranian population. Methods: A series of 123 consecutive confirmed cases of peripheral giant cell granuloma after biopsy were evaluated. Age, sex, anatomic location, consistency, etiologic factor, pain and bleeding history, color, surface texture, and pedicle situation were recorded and were analyzed by chi-square test and values were considered to be significant if P < 0.05. Results: Age ranged from 6 to 75 years (mean 33 years. Women affected more than men (M/F 1:1.1. Peripheral giant cell granuloma was seen in the mandible more than in the maxilla and in the anterior region more than in the posterior region. In most cases, lesions were pink, pedunculated and had non-ulcerated surface. In less than half of the cases, there was no history of bleeding and also pain was rarely reported. Calculus was the most common etiologic factor. Conclusion: The results confirmed that the clinical features of peripheral giant cell granuloma in a group of Iranian population are almost similar to those reported by other investigators.

  5. Towards Accurate Application Characterization for Exascale (APEX)

    Energy Technology Data Exchange (ETDEWEB)

    Hammond, Simon David [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

    2015-09-01

    Sandia National Laboratories has been engaged in hardware and software codesign activities for a number of years, indeed, it might be argued that prototyping of clusters as far back as the CPLANT machines and many large capability resources including ASCI Red and RedStorm were examples of codesigned solutions. As the research supporting our codesign activities has moved closer to investigating on-node runtime behavior a nature hunger has grown for detailed analysis of both hardware and algorithm performance from the perspective of low-level operations. The Application Characterization for Exascale (APEX) LDRD was a project concieved of addressing some of these concerns. Primarily the research was to intended to focus on generating accurate and reproducible low-level performance metrics using tools that could scale to production-class code bases. Along side this research was an advocacy and analysis role associated with evaluating tools for production use, working with leading industry vendors to develop and refine solutions required by our code teams and to directly engage with production code developers to form a context for the application analysis and a bridge to the research community within Sandia. On each of these accounts significant progress has been made, particularly, as this report will cover, in the low-level analysis of operations for important classes of algorithms. This report summarizes the development of a collection of tools under the APEX research program and leaves to other SAND and L2 milestone reports the description of codesign progress with Sandia’s production users/developers.

  6. Petrous apex arachnoid cyst extending into Meckel's cave.

    Science.gov (United States)

    Batra, Arun; Tripathi, Rajendra Prasad; Singh, Anil Kumar; Tatke, Medha

    2002-09-01

    A rare case of arachnoid cyst involving the petrous apex with an unusual clinical presentation has been described with special emphasis in the imaging features and importance of accurate presurgical diagnosis. Differentiation from the other benign lesions involving the petrous apex and the role of newer MR techniques in the diagnosis of these lesions has been highlighted.

  7. Petrous apex cephalocele er en sjælden lidelse

    DEFF Research Database (Denmark)

    Ingolfsdottir, Harpa Maria; Martens, Pernille Christina; Kaltoft, Nicolai;

    2011-01-01

    Petrous apex cephalocele (PAC) is a rare lesion, which represents a herniation from the posteriolateral portion of Meckel's cave into the petrous apex. The pathologic explanation is still unknown. We report a patient with clinical symptoms of facial pain, hearing loss and cerebrospinal fluid...

  8. APEX; current status of the airborne dispersive pushbroom imaging spectrometer

    NARCIS (Netherlands)

    Nieke, J.; Itten, K.I.; Kaiser, J.W.; Schlapfer, D.; Brazile, J.; Debruyn, W.; Meuleman, K.; Kempeneers, P.; Neukom, A.; Feusi, H.; Adolph, P.; Moser, R.; Schilliger, T.; Kohler, P.; Meng, M.; Piesbergen, J.; Strobl, P.; Schaepman, M.E.; Gavira, J.; Ulbrich, G.J.; Meynart, R.

    2004-01-01

    Recently, a joint Swiss/Belgian initiative started a project to build a new generation airborne imaging spectrometer, namely APEX (Airborne Prism Experiment) under the ESA funding scheme named PRODEX. APEX is a dispersive pushbroom imaging spectrometer operating in the spectral range between 380 - 2

  9. Multinucleated giant cell cytokine expression in pulmonary granulomas of cattle experimentally infected with Mycobacterium bovis

    Science.gov (United States)

    Pathogenic mycobacteria of the Mycobacterium tuberculosis complex such as Mycobacterium bovis, induce a characteristic lesion known as a granulomas. Granulomas represent a specific host response to chronic antigenic stimuli, such as foreign bodies, certain bacterial components, or persistent pathoge...

  10. Giant pyogenic granuloma of the thigh: a case report

    Directory of Open Access Journals (Sweden)

    Nthumba Peter M

    2008-03-01

    Full Text Available Abstract Introduction Pyogenic granuloma or lobular capillary hemangioma remains an etiopathological enigma, with trauma, inflammatory and infectious agents being the commonest suspected causative agents. These lesions affect mucous membranes of the upper aero-digestive tract, and skin. HIV patients diagnosed with pyogenic granuloma present with multiple lesions, caused by Bartonella spp. Case presentation A 28-year-old woman presented with a solitary large tumor on a skin graft donor site on her left thigh. On excision and histological examination the tumor was found to be a lobular capillary hemangioma (pyogenic granuloma. Further investigation in search of a possible explanation for this unusual presentation revealed HIV infection as the underlying cause. Conclusion This report underscores the fact that the full spectrum of presentation of HIV infection is still unknown. Unusual or unexpected presentations should arouse suspicion of underlying immunosuppression, especially in HIV endemic areas.

  11. Granuloma eosinofílico orbitário

    OpenAIRE

    2008-01-01

    OBJETIVO: Relatar, de forma retrospectiva, a experiência no diagnóstico e tratamento do granuloma eosinofílico da órbita em serviço de referência. MÉTODOS: Identificados os pacientes com diagnóstico de granuloma eosinofílico orbitário, no Registro do Laboratório de Patologia Ocular do Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, no período entre 1974 e 2004. Coletados dados referentes ao diagnóstico, tratamento e realizada revisão das lâminas coradas pela hem...

  12. Granuloma eosinofílico orbitário

    OpenAIRE

    2008-01-01

    p.405-409 Objetivo: Relatar, de forma retrospectiva, a experiência no diagnóstico e tratamento do granuloma eosinofílico da órbita em serviço de referência. Métodos: Identificados os pacientes com diagnóstico de granuloma eosinofílico orbitário, no Registro do Laboratório de Patologia Ocular do Hospital Universitário Professor Edgard Santos, Universidade Federal da Bahia, no período entre 1974 e 2004. Coletados dados referentes ao diagnóstico, tratamento e realizada revisão das lâminas ...

  13. Patch Type Granuloma Annulare Imitating Cutaneous T-Cell Lymphoma

    Directory of Open Access Journals (Sweden)

    Seval Doğruk Kaçar

    2015-03-01

    Full Text Available Granuloma annulare (GA is a benign inflammatory skin disease with distinct clinical and histopathological findings. Patch type GA is described with erythematous patches beyond the classical clinical appearance and an interstitial pattern is observed without histopathologically granulomas with disseminated histiocytes among collagen bundles and vessels. Here we report 46 year old woman diagnosed as patch type GA after a punch biopsy performed from the annular bordered patches in belly area, which is a classical area for mycosis fungoides (MF evolution, and lesions increasingly spreading out within a 2 year period.

  14. Regulation of cholesterol homeostasis.

    Science.gov (United States)

    van der Wulp, Mariëtte Y M; Verkade, Henkjan J; Groen, Albert K

    2013-04-10

    Hypercholesterolemia is an important risk factor for cardiovascular disease. It is caused by a disturbed balance between cholesterol secretion into the blood versus uptake. The pathways involved are regulated via a complex interplay of enzymes, transport proteins, transcription factors and non-coding RNA's. The last two decades insight into underlying mechanisms has increased vastly but there are still a lot of unknowns, particularly regarding intracellular cholesterol transport. After decades of concentration on the liver, in recent years the intestine has come into focus as an important control point in cholesterol homeostasis. This review will discuss current knowledge of cholesterol physiology, with emphasis on cholesterol absorption, cholesterol synthesis and fecal excretion, and new (possible) therapeutic options for hypercholesterolemia.

  15. An in vitro comparison of two modern apex locators.

    Science.gov (United States)

    Weiger, R; John, C; Geigle, H; Löst, C

    1999-11-01

    Two apex locators were compared regarding their ability to accurately locate the apical constriction in the presence of various canal fluids at different meter readings. Forty-one root canals were filled with 1% NaOCl, 3% H2O2, and 0.9% NaCl, respectively. Electronic working length (EWL) measurements were recorded with the apex locators Root ZX (meter readings: "Apex", "0.5", and "1") and Apit (meter readings: "Apex" and "3"). The deviation of the EWL from the apical constriction was determined. The proportion of measurements within +/- 0.5 mm of the apical constriction ranged between 0.76 and 0.85 for Root ZX at the meter readings "Apex" and "0.5," regardless of the canal contents. Apit consistently displayed shorter measurement values than Root ZX and reached the highest proportions at the meter reading "Apex": 0.59 (1% NaOCl), 0.61 (3% H2O2), and 0.68 (0.9% NaCl). In the presence of NaOCl, Root ZX provides the more accurate EWL measurements at the meter reading "0.5" and "Apex."

  16. Accuracy of four electronic apex locators: an in vitro evaluation.

    Science.gov (United States)

    De Moor, R J; Hommez, G M; Martens, L C; De Boever, J G

    1999-04-01

    In the present study, the accuracy and operator dependency of four electronic canal length measuring devices (Apex Finder AFA Model 7005, Apex-Finder, Neosono Ultima EZ and Apit 2) were compared under a set of specified conditions. The electronic apex locators were tested in unflared dry, flared wet and flared dry canals, and in a gelatin as well as in a sodium hypochlorite sponge model. Fifteen extracted single-canaled teeth were selected. The differences between canal lengths obtained by the electronic apex locators and actual canal lengths were scored. Only the Apex-Finder was found to be unreliable (measurements higher than +/- 0.5 mm from the apical foramen). This device was also found to be particularly dependent on operator. A ranking based on a precision of +/- 0.1 mm from the apical foramen showed the Apex Finder AFA Model 7005 to be the most accurate. Early coronal flaring did not ensure better or more precise readings. The gelatin model was evaluated to be more suitable for testing electronic apex locators in vitro than the sodium hypochlorite model.

  17. Cholesterol - what to ask your doctor

    Science.gov (United States)

    ... your doctor; What to ask your doctor about cholesterol ... What is my cholesterol level? What should my cholesterol level be? What are HDL ("good") cholesterol and LDL ("bad") cholesterol? Does my cholesterol ...

  18. Resection of the Tooth Apex with Diode Laser

    Directory of Open Access Journals (Sweden)

    Uzunov Tz.

    2014-06-01

    Full Text Available An “in vitro” experimental study has been carried out on 70 extracted teeth. A laser resection of the root apex has been carried out with diode laser beam with a wavelength of - 810 ± 10 nm. Sequentially a radiation with increasing power has been applied, as follows: 1,3 W, 2W, 3W, 4W, 5W, 6W, 7W, in electro surgery mode. Successful resection of the tooth apex has been performed at: 3W; 4W; 5W; 6W and 7W power. It was established that when laser resected the tooth apex carbonizes.

  19. Positive staining for cellulose in oral pulse granuloma

    DEFF Research Database (Denmark)

    Virkkunen, Sirke; Wolff, Henrik; Haglund, Caj

    2017-01-01

    Objective: Oral pulse granuloma (OPG) is an oral inflammatory lesion characterized by the presence of hyaline rings with numerous multinucleated giant cells. The etiopathogenesis of this lesion is thus far unclear, as is the composition of the hyaline rings. Our aim was to investigate whether the...

  20. Strict Anatomical Colocalization of Vitiligo and Elastolytic Granulomas

    Directory of Open Access Journals (Sweden)

    N. Merino de Paz

    2010-02-01

    Full Text Available Vitiligo is the most common depigmenting disorder, with a worldwide occurrence of 0.1–2% in the general population. Multiple conditions have been described colocalized in vitiligo patches, like psoriasis or lichen planus. However, actinic granuloma has not been described in association with vitiligo lesions so far.

  1. Immunoglobulins and C3 in the P. brasiliensis granuloma

    Directory of Open Access Journals (Sweden)

    Lilian M. V. Biagioni

    1987-04-01

    Full Text Available The experimental model of paracoccidioidomycosis induced in mice by the intravenous injection of yeast-forms of P. brasiliensis (Bt2 strain; 1 x 10(6 viable fungi/animal was used to evaluate sequentially 2, 4, 8, 16 and 20 weeks after inoculation: 1. The presence of immunoglobulins and C3 in the pulmonary granuloma-ta, by direct immunofluorescence; 2. The humoral (immunodiffusion test and the cellular (footpad sweeling test immune response; 3. The histopathology of lesions. The cell-immune response was positive since week 2, showing a transitory depression at week 16. Specific antibodies were first detected at week 4 and peaked at week 16. At histology, epithelioid granulomas with numerous fungi and polymorphonuclear agreggates were seen. The lungs showed progressive involvement up to week 16, with little decrease at week 20. From week 2 on, there were deposits of IgG and C3 around fungal walls within the granulomas and IgG stained cells among the mononuclear cell peripheral halo. Interstitital immunoglobulins and C3 deposits in the granulomas were not letected. IgG and C3 seen to play an early an important role in. the host defenses against P. brasiliensis by possibly cooperating in the killing of parasites and blocking the antigenic diffusion.

  2. Multiple pyogenic granulomas on the face after landmine injury.

    Science.gov (United States)

    Bakan, Vedat; Aliagaoglu, Cihangir; Yildiz, Abdullah; Emsen, Murat

    2008-01-01

    In this report, we present a 13-year-old male patient with multiple pyogenic granulomas (PG) on the face after landmine injury. To the best of our knowledge, PG after landmine injury has not been reported previously. The case has been reported in view of its rarity and its etiology.

  3. A case report of peripheral giant cell granuloma

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Sung Soo; Jung, Yeon Hwa; Cho, Bong Hae; Nah, Kyung Soo [Dept. of Oral and Maxillofacial Radiology, College of Dentistry, Pusan National University, Pusan(Korea, Republic of)

    1997-08-15

    The authors experienced one case of peripheral giant cell granuloma occurred at the gingiva of right maxillary molar in a 12-year-old male patient. The lesion showed amorphous calcification within soft tissue mass which made difficult to differentiate this lesion from peripheral ossifying fibroma and peripheral odontogenic fibroma clinically and radiographically. The final diagnosis was made histologically.

  4. The Histopathological Spectrum of Pyogenic Granuloma: A Case Series

    Directory of Open Access Journals (Sweden)

    Vinay Marla

    2016-01-01

    Full Text Available Background. Pyogenic granuloma is a reactive tumor-like lesion commonly affecting the oral cavity. These lesions usually appear as localized solitary nodule with a sessile or pedunculated base and colour varying from red, purplish, or pink, depending on the vascularity of the lesion. Pyogenic granuloma shows predilection for gingiva and is usually slow growing, but at times it shows rapid growth. The natural course of this lesion can be categorized into three distinct phases, namely, (i cellular phase, (ii capillary phase/vascular phase, and (iii involutionary phase. Histopathologically, pyogenic granuloma is classified into lobular capillary hemangioma (LCH and non-lobular capillary hemangioma (non-LCH. Case Presentation. In this series, four cases (varied age groups and both genders of pyogenic granuloma showing varying histopathological presentation in relation to its clinical course have been described. The lesion in its early phase reveals diffuse endothelial cells, with few budding into capillaries. Among the capillary phase, the LCH type shows numerous blood vessels organized into lobular aggregates whereas the non-LCH type does not show any such organization and resembles granulation tissue. The involutionary phase shows healing of the lesion and is characterized by extensive fibrosis in the connective tissue. Conclusion. In conclusion, knowledge of the various histopathological presentation of this lesion is necessary for proper identification.

  5. Oral pyogenic granuloma: a epidemiologic study of 191 cases

    Directory of Open Access Journals (Sweden)

    Thiago de Santana SANTOS

    2008-01-01

    Full Text Available Objectives: To evaluate the prevalence of pyogenic granuloma and compare the data obtained with those of other reports in the worldliterature. Methods: The study material was surveyed from the records of patients with diagnosis of oral pyogenic granuloma, at the Oral Pathology Laboratory of the School of Dentistry of the University of Pernambuco, in the period from January 1992 to March 2007 (15 years. The following indicators were analyzed: gender, age group, race, anatomic location, diameter of lesions and presence of symptomatology.Results: Among the 5007 records in the laboratory, 3.81% corresponded to lesions diagnosed as oral pyogenic granuloma, in which 19.9% of the patients were in the second decade of life, 40.1% were white, the gingiva was the most affected location (77.9% and lesion of smaller diameter (0.1 to 2 cm were those most observed at the initial diagnosis. Conclusion: The clinical-pathological characteristics of oral pyogenic granuloma in the studied population are similar to those of other studies in the literature

  6. Granuloma hialinizante de pulmão recidivante Recurrent pulmonary hyalinizing granuloma

    Directory of Open Access Journals (Sweden)

    Guilherme D'Andréa Saba Arruda

    2010-10-01

    Full Text Available Relatamos o caso de um paciente de 61 anos, masculino, internado com objetivo de exérese de massa pulmonar para estudo anatomopatológico. O paciente apresentara anteriormente um quadro de febre, tosse seca e dor torácica, associado à presença de massas pulmonares detectadas por radiografia de tórax, tendo sido submetido em duas ocasiões (1976 e 1981 a toracotomia para a investigação diagnóstica, sem diagnóstico anatomopatológico conclusivo. A TC de tórax revelou volumosas massas com áreas de calcificação em ambos os campos pulmonares. O material do estudo anatomopatológico foi compatível com granuloma hialinizante de pulmão. No pós-operatório, o paciente apresentou vários episódios de broncoespasmo que foram revertidos com medicação sintomática. Foi mantido com prednisona na dose de 40 mg/dia com boa evolução clínica até o envio deste relato.We report the case of a 61-year-old male patient who underwent surgical excision of a lung mass for anatomopathological study. The patient had previously presented with fever, dry cough, and chest pain, together with lung masses detected by chest X-ray, and had undergone thoracotomy for diagnostic investigation on two occasions (1976 and 1981, although a conclusive diagnosis had not been made. A CT scan of the chest revealed large masses with areas of calcification in both lung fields. The anatomopathological study was consistent with pulmonary hyalinizing granuloma. In the postoperative period, the patient experienced several episodes of bronchospasm, which was reversible with the use of symptomatic medication. At this writing, the patient was receiving maintenance therapy with prednisone (40 mg/day and had shown clinical improvement.

  7. Anti-granuloma activity of Coriandrum sativum in experimental models

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    Vinod Nair

    2013-01-01

    Full Text Available Background: Coriandrum sativum has been used in the traditional systems of medicine for management of arthritis and other inflammatory disorders. Objectives: In this study, we have evaluated the anti-inflammatory and anti-granuloma activities of Coriandrum sativum hydroalcoholic extract (CSHE in experimental models. Materials and Methods: The anti-inflammatory activity of CSHE was evaluated using carrageenan-induced paw edema model and the anti-granuloma activity of CSHE was evaluated using the subcutaneous cotton pellet implantation-induced granuloma formation and stimulation of peritoneal macrophages with complete Freund′s adjuvant. Serum tumor necrosis factor-α (TNF-α, IL-6, IL-1 β levels, and peritoneal macrophage expression of TNF-R1 were evaluated as markers of global inflammation. Results: CSHE at the highest dose tested (32 mg/kg produced a significant reduction (P < 0.05 in paw edema after carrageenan administration. CSHE treatment also reduced dry granuloma weight in all treated animals. Serum IL-6 and IL-1 β levels were significantly ( P < 0.05 lower in the CSHE (32 mg/kg-treated group as compared to control. Although there was an increase in serum TNF-α level in the CSHE-treated group as compared to control, TNF-R1 expression on peritoneal macrophages was found to be reduced. Conclusion: Thus, the result of this study demonstrates the anti-inflammatory and anti-granuloma activities of CSHE in experimental models, and validates its traditional use for the management of arthritis and other inflammatory disorders.

  8. National Cholesterol Education Month

    Centers for Disease Control (CDC) Podcasts

    2009-09-01

    Do you know your cholesterol numbers? Your doctor can do a simple test to check your cholesterol levels and help you make choices that lower your risk for heart disease and stroke.  Created: 9/1/2009 by National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP).   Date Released: 9/9/2009.

  9. Surface Free Energy Determination of APEX Photosensitive Glass

    Directory of Open Access Journals (Sweden)

    William R. Gaillard

    2016-02-01

    Full Text Available Surface free energy (SFE plays an important role in microfluidic device operation. Photosensitive glasses such as APEX offer numerous advantages over traditional glasses for microfluidics, yet the SFE for APEX has not been previously reported. We calculate SFE with the Owens/Wendt geometric method by using contact angles measured with the Sessile drop technique. While the total SFE for APEX is found to be similar to traditional microstructurable glasses, the polar component is lower, which is likely attributable to composition. The SFE was modified at each stage of device fabrication, but the SFE of the stock and fully processed glass was found to be approximately the same at a value of 51 mJ·m−2. APEX exhibited inconsistent wetting behavior attributable to an inhomogeneous surface chemical composition. Means to produce more consistent wetting of photosensitive glass for microfluidic applications are discussed.

  10. An overview of electronic apex locators: part 2.

    Science.gov (United States)

    Ali, R; Okechukwu, N C; Brunton, P; Nattress, B

    2013-03-01

    A number of electronic apex locators are available for use during endodontic treatment. The use of third and fourth generation electronic apex locators (EAL) are recommended to help clinicians determine the apical limit of the root canal system (RCS). The presence of different irrigating media in the RCS does not impact significantly on the performance of third/fourth generation apex locators. The devices are most accurate at determining the apical limit when the attached endodontic file contacts the periodontal ligament space and the visual analogue displays 'Apex' or '0.' Given the accuracies of modern generation EALs, the clinician should be able to consistently identify the apical limit of the tooth under treatment. Their use in conjunction with appropriate radiographs and the clinician's knowledge of average RCS lengths and anatomy will maximise the successful outcome of any orthograde endodontic treatment.

  11. What Causes High Blood Cholesterol?

    Science.gov (United States)

    ... the NHLBI on Twitter. What Causes High Blood Cholesterol? Many factors can affect the cholesterol levels in your blood. You can control some ... but not others. Factors You Can Control Diet Cholesterol is found in foods that come from animal ...

  12. Bile acid sequestrants for cholesterol

    Science.gov (United States)

    ... ency/patientinstructions/000787.htm Bile acid sequestrants for cholesterol To use the sharing features on this page, ... are medicines that help lower your LDL (bad) cholesterol . Too much cholesterol in your blood can stick ...

  13. Role of radiotherapy in the treatment of granuloma gangraenescens (lethal midline granuloma)

    Energy Technology Data Exchange (ETDEWEB)

    Sack, H.; Horch, H.H.; Schaefer, H.E.; Wustrow, F.

    1984-02-01

    The granuloma gangraenescens in the oral, maxillary and facial region is a rare disease. It is a destroying process in the region of palate, nose, paranasal sinuses, cheeks and orbit with characteristic signs of granulomatosis, infection and malignancy. The disease shows often a lethal development with cachexia or sepsis. Besides local inflammations and tumors, the granulomatosis of Wegener, and the so-called necrotizing sialometaplasia are above all to be excluded by differential diagnosis. Five cases are presented in order to describe the diagnostic and therapeutic problems. In literature, the greatest efficacy is attributed to radiotherapy, however, a detailed definition of the most efficient irradiation conditions cannot be given yet because of the small number of cases. Good long-term results or recoveries can be achieved in 75 to 80% of cases by a relatively high radiation dose of 40 to 50 Gy administered within four to five weeks. During the observation time of two to six years, no one of the five patients treated here only by megavoltage therapy showed a recurrence.

  14. Effect of preflaring on Root ZX apex locators.

    Science.gov (United States)

    Ibarrola, J L; Chapman, B L; Howard, J H; Knowles, K I; Ludlow, M O

    1999-09-01

    The Root ZX apex locator is an example of a generation of apex locators that identify the terminus of the canal by measuring a ratio between two electrical impedances. Studies have shown this device to have a high degree of accuracy. However, the manufacturer warns that the performance of these devices is limited by the presence of calcifications and dentinal shaving obstructions. An in vitro study was designed to determine if preflaring of canals would facilitate the passage of files to the apical foramen by eliminating cervical interferences and to see what effect this would have on the performance of the Root ZX apex locator. Thirty-two canals were divided into two groups. Group 1 was not manipulated before use of the Root ZX apex locator and served as control. In group 2, the canals were preflared before the use of the Root Zx apex locator. The working length files were secured in place and measured with the linear measurement tool used by the Visilog 5 imaging program. Results of this study suggest that preflaring of canals will allow working length files to more consistently reach the apical foramen (p = 0.015), which in turn increases the efficacy of the Root ZX apex locator.

  15. A Unique Case of Pulmonary Hyalinizing Granuloma Associated With FDG-avid PET Scan and Deep Venous Thrombosis.

    Science.gov (United States)

    Khalid, Imran; Stone, Chad; Kvale, Paul

    2009-04-01

    An 83-year-old obese woman with a 60-pack-year smoking history was referred for evaluation of an abnormal chest radiograph [chest x-ray (CXR)]. Her past medical history was significant for recurrent deep venous thrombosis without any predisposing factors. CXR showed a large mass in the right mid lung and another nodule at the right apex, highly suspicious for a neoplastic process. These were not present on a CXR from 2 years earlier. An fluorodeoxyglucose (FDG)-positron emission tomography (PET)/computed tomography (CT) scan revealed that all lesions were strongly FDG-avid. Six CT-guided core-needle lung biopsy specimens were obtained from the lung mass and all contained dense, lamellar, or "ropy" keloid-like collagen bundles arranged in a haphazard pattern. The biopsy specimens lacked significant necrosis and granulomas. Congo red stain with polarization was also negative for amyloid. The diagnosis of pulmonary hyalinizing granuloma (PHG) was made. A complete hypercoagulable workup was performed but no underlying abnormalities were found, including a negative lupus anticoagulant and malignancy workup. The patient was maintained on warfarin and followed with serial CT scans for 1 year, with spontaneous regression in the lung mass. The case is unique as it is the first case that reports an association of PHG with recurrent deep venous thrombosis in the absence of autoimmune or procoagulant factors and emphasizes the need for life-long anticoagulation in such scenarios. Also, we report the FDG-avid PET scan findings here that are novel for this disease in adults and add PHG to the list of diseases causing false-positive PET scans when malignancy is suspected.

  16. Induction of ER stress in macrophages of tuberculosis granulomas.

    Directory of Open Access Journals (Sweden)

    Tracie A Seimon

    Full Text Available BACKGROUND: The endoplasmic reticulum (ER stress pathway known as the Unfolded Protein Response (UPR is an adaptive survival pathway that protects cells from the buildup of misfolded proteins, but under certain circumstances it can lead to apoptosis. ER stress has been causally associated with macrophage apoptosis in advanced atherosclerosis of mice and humans. Because atherosclerosis shares certain features with tuberculosis (TB with regard to lesional macrophage accumulation, foam cell formation, and apoptosis, we investigated if the ER stress pathway is activated during TB infection. PRINCIPAL FINDINGS: Here we show that ER stress markers such as C/EBP homologous protein (CHOP; also known as GADD153, phosphorylated inositol-requiring enzyme 1 alpha (Ire1α and eukaryotic initiation factor 2 alpha (eIF2α, and activating transcription factor 3 (ATF3 are expressed in macrophage-rich areas of granulomas in lungs of mice infected with virulent Mycobacterium tuberculosis (Mtb. These areas were also positive for numerous apoptotic cells as assayed by TUNEL. Microarray analysis of human caseous TB granulomas isolated by laser capture microdissection reveal that 73% of genes involved in the UPR are upregulated at the mRNA transcript level. The expression of two ER stress markers, ATF3 and CHOP, were also increased in macrophages of human TB granulomas when assayed by immunohistochemistry. CHOP has been causally associated with ER stress-induced macrophage apoptosis. We found that apoptosis was more abundant in granulomas as compared to non-granulomatous tissue isolated from patients with pulmonary TB, and apoptosis correlated with CHOP expression in areas surrounding the centralized areas of caseation. CONCLUSIONS: In summary, ER stress is induced in macrophages of TB granulomas in areas where apoptotic cells accumulate in mice and humans. Although macrophage apoptosis is generally thought to be beneficial in initially protecting the host from Mtb

  17. Cholesterol and Women's Health

    Science.gov (United States)

    ... can I make to reduce my risk of cardiovascular disease? • Is there medication that can help reduce my cholesterol ... It also helps your body make vitamin D and produces the bile that helps you ...

  18. Systemic Lupus Erythematosus with Hepatosplenic Granuloma: A Rare Case

    Directory of Open Access Journals (Sweden)

    Anju Bharti

    2014-01-01

    Full Text Available Background. Systemic lupus erythematosus (SLE is an autoimmune disease which is known to present with a wide variety of clinical manifestations. Case Report. A 15-year-old male presented with complaints of moderate grade fever and generalized body swelling. There was no history of cough, weight loss, joint pain, oral ulcerations, skin rash, photosensitivity, loss of hair, pain abdomen, jaundice, or any significant illness in the past. Contrast enhanced computerized tomography of the abdomen revealed hypodense lesions in both liver and spleen (without contrast enhancement, suggestive of granulomas along with few retroperitoneal and mesenteric lymph nodes. On the basis of immunological tests and renal biopsy report, SLE with hepatosplenic granulomatosis diagnosis was made. He was given pulse methylprednisolone 500 mg, for 3 days and he showed dramatic improvement clinically. Conclusion. Hepatic and splenic granulomas are not common in SLE, but this should be kept in differential diagnosis.

  19. Pulse granuloma as a complication following dental trauma in children.

    Science.gov (United States)

    Padmanabhan, Makkada Yuvaraj; Aparna, Radhakrishnan; Karthikeyani, Shanmugasundaram; Dinakar, Jayakumar; Manickaraj, Menaka

    2013-01-01

    Contamination and subsequent retention of foreign bodies within wound surfaces may negatively influence healing following maxillofacial injuries. Larger foreign bodies that produce embedded or impalement injuries of soft tissues are easily detected. However, smaller contaminants, such as sand, gravel, food particles, wood splinters, and glass fibers, may not be easily identified in the initial examination, and their remnants may remain within the injury site even after debridement. Tissue reactions depend on the host response, type of foreign body, and nature of the wound surface. The purposes of this report are to: (1) detail the diagnosis and management of a peripheral pulse granuloma following retention of food particles within gingival sulci during a dental injury; and (2) provide a brief review of the diagnosis of foreign body-induced granulomas following maxillofacial injuries in children.

  20. Pulmonary hyalinizing granuloma and retroperitoneal fibrosis in an adolescent

    Energy Technology Data Exchange (ETDEWEB)

    Young, Adam S.; Binkovitz, Larry A.; Adler, Brent H. [Columbus Children' s Hospital, Children' s Radiological Institute, Columbus, OH (United States); Nicol, Kathleen K. [Columbus Children' s Hospital, Department of Pathology, Columbus, OH (United States); Rennebohm, Robert M. [Columbus Children' s Hospital, Department of Rheumatology, Columbus, OH (United States)

    2007-01-15

    We describe a 15-year-old boy who developed pulmonary hyalinizing granuloma (PHG) and retroperitoneal fibrosis (RPF). His PHG and RPF were not associated with histoplasmosis or tuberculosis and appeared to represent idiopathic autoimmune phenomena. This is the first reported case of PHG in a pediatric patient and the fourth reported co-occurrence of PHG and RPF. The use of F-18 fluorodeoxyglucose positron emission tomography in the diagnostic and follow-up evaluation of PHG is reported. (orig.)

  1. Bone marrow granulomas in infiltrating lobular breast cancer.

    OpenAIRE

    Kettle, P.; Allen, D C

    1997-01-01

    A 50 year old woman with a history of infiltrating lobular breast carcinoma presented with back pain. Bone scan and magnetic resonance imaging were not conclusive. A bone marrow aspirate appeared normal. A routine trephine biopsy specimen showed granulomas but no obvious infiltration by carcinoma. Immunohistochemical staining with epithelial markers demonstrated carcinoma cells in the trephine specimen. This case illustrates the difficulty of detecting infiltrating lobular carcinoma in bone m...

  2. Human schistosomiasis mansoni: studies on in vitro granuloma modulation

    Directory of Open Access Journals (Sweden)

    Juçara C. Parra

    1992-01-01

    Full Text Available Infection with Schistosoma mansoni induces humoral and T cell mediated responses and leads to delayed hipersensitivity that results in granulomatous inflamatory disease around the parasite eggs. Regulation of these responses resulting in a reduction in this anti-egg inflamatory disease is appsrently determined by idiotypic repertoires of the patient, associated with genetic background and multiple external factors. We have previously reported on idiotype/anti-idiotype-receptor transactions in clinical human schistosomiasis. These findings support a hypothesis that anti-SEA cross-reactive idiotypes develop in some patients during the course of a chronic infection and participate in regulation of anti-SEA cellular immune responses. We repport here on experiments wich extend those observations to the regulation of granulomatous hypersensitivity measured by an in vitro granuloma model. T cells from chronic intestinal schistosomiasis patients were stimulated in vitro with anti-SEA idiotypes and assayed in an autologous in vitro granuloma assay for modulation of granuloma formation. These anti-SEA idiotype reactive T cells were capable of regulating autologous in vitro granuloma formation. This regulatory activity, initiated with stimulatory anti-SEA idiotypic antibodies, was antigenically specific and was dependent on the present of intact (F(ab'2 immunoglobulin molecules. The ability to elicit this regulatory activity appears to be dose dependent and is more easily demonstrated in chronically infected intestinal patients or SEA sensitized individuals. These data support the hypothesis that anti-SEA cross reactive idiotypes are important in regulating granulomatous hypersensitivy in chronic intestinal schistosomiasis patients and these cross-reactive idiotypes appear to play a major role in cell-cell interactions which result in the regulation of anti-SEA cellular immune responses.

  3. Snake remedies and eosinophilic granuloma complex in cats.

    Science.gov (United States)

    Aboutboul, Ronit

    2006-01-01

    Eosinophilic granuloma complex (EGC) is a syndrome occurring in cats, characterized by lesions affecting the skin and the oral cavity. Conventional treatment is mainly symptomatic and may have undesirable side effects. This paper summarizes homeopathic treatment with snake remedies of cats suffering from EGC. Snake remedies were chosen by individual repertorizations and administered in different dilutions. Reactions were mostly quick, leading to significant improvements, including complete recoveries.

  4. MD-2 binds cholesterol.

    Science.gov (United States)

    Choi, Soo-Ho; Kim, Jungsu; Gonen, Ayelet; Viriyakosol, Suganya; Miller, Yury I

    2016-02-19

    Cholesterol is a structural component of cellular membranes, which is transported from liver to peripheral cells in the form of cholesterol esters (CE), residing in the hydrophobic core of low-density lipoprotein. Oxidized CE (OxCE) is often found in plasma and in atherosclerotic lesions of subjects with cardiovascular disease. Our earlier studies have demonstrated that OxCE activates inflammatory responses in macrophages via toll-like receptor-4 (TLR4). Here we demonstrate that cholesterol binds to myeloid differentiation-2 (MD-2), a TLR4 ancillary molecule, which is a binding receptor for bacterial lipopolysaccharide (LPS) and is indispensable for LPS-induced TLR4 dimerization and signaling. Cholesterol binding to MD-2 was competed by LPS and by OxCE-modified BSA. Furthermore, soluble MD-2 in human plasma and MD-2 in mouse atherosclerotic lesions carried cholesterol, the finding supporting the biological significance of MD-2 cholesterol binding. These results help understand the molecular basis of TLR4 activation by OxCE and mechanisms of chronic inflammation in atherosclerosis.

  5. Cholesterol in unusual places

    Energy Technology Data Exchange (ETDEWEB)

    Kucerka, N; Nieh, M P; Marquardt, D; Harroun, T A; Wassail, S R; Katsaras, J, E-mail: John.Katsaras@nrc.gc.ca, E-mail: Norbert.Kucerka@nrc.gc.ca

    2010-11-01

    Cholesterol is an essential component of mammalian cells, and is required for building and maintaining cell membranes, regulating their fluidity, and possibly acting as an antioxidant. Cholesterol has also been implicated in cell signaling processes, where it has been suggested that it triggers the formation of lipid rafts in the plasma membrane. Aside from cholesterol's physiological roles, what is also becoming clear is its poor affinity for lipids with unsaturated fatty acids as opposed to saturated lipids, such as sphingomyelin with which it forms rafts. We previously reported the location of cholesterol in membranes with varying degrees of acyl chain unsaturation as determined by neutron diffraction studies (Harroun et al 2006 Biochemistry 45, 1227; Harroun et al 2008 Biochemistry 47, 7090). In bilayers composed of phosphatidylcholine (PC) molecules with a saturated acyl chain at the sn-1 position or a monounsaturated acyl chain at both sn-1 and sn-2 positions, cholesterol was found in its much-accepted 'upright' position. However, in dipolyunsaturated 1,2-diarachidonyl phosphatidylcholine (20:4-20:4PC) membranes the molecule was found sequestered in the center of the bilayers. In further experiments, mixing l-palmitoyl-2-oleoyl phosphatidylcholine (16:0-18:1 PC) with 20:4-20:4PC resulted in cholesterol reverting to its upright orientation at approximately 40 mol% 16:0-18:1 PC. Interestingly, the same effect was achieved with only 5 mol% 1,2-dimyristoyl phosphatidylchoile (14:0-14:0PC).

  6. Reparative giant cell granuloma in a pediatric patient.

    Science.gov (United States)

    Duarte Ruiz, Blanca; Riba García, Francisco de Asís; Navarro Cuéllar, Carlos; Bucci, Tommaso; Cuesta Gil, Matías; Navarro Vila, Carlos

    2007-08-01

    Reparative giant cell granulomas are benign, infrequent tumors, of non-odontogenic origin, that develop at central or peripheral level. Peripherally located lesions are frequently denominated "giant cell epulis", and never correspond to true neoplasia, but rather to inflammatory reactions secondary to another lesion (hemorrhage, etc.). It should be taken into account, that in general, head and neck tumors of infancy usually demonstrate an atypical biological behaviour. Furthermore, the anatomicopathologic diagnosis is often compromised in this type of lesion. We present the case of a 6-year-old boy, who, three weeks after suffering a slight facial trauma, developed a painless, exophytic swelling of approximately 4 cm, with bleeding on palpation, in the ipsilateral hemimaxilla. The lesion demonstrated rapid, progressive and continuous growth. The facial CT and incisional biopsy confirmed the suspected diagnosis of reparative giant cell granuloma. The patient was surgically treated, carrying out a left marginal maxillectomy associated with the extirpation of the soft-tissue lesion. The resultant defect was reconstructed with a Bichat fat-pad providing the patient with optimal esthetic and functional results. The definitive anatomicopathologic report of the surgical piece is compatible with reparative giant cell granuloma.

  7. CENTRAL GIANT CELL GRANULOMA OF THE MANDIBLE: A RARE PRESENTATION

    Directory of Open Access Journals (Sweden)

    Virendra SINGH

    2012-06-01

    Full Text Available Central giant cell granuloma (CGCG is an intra-osseous lesion consisting of cellular fibrosis tissue containing multiple foci of hemorrhage, multinucleated giant cells and trabecules of woven bone. This lesion accounts for less than 7% of all benign jaw tumours. Jaffe considered it as a locally reparative reaction of bone, which can be possibly due to either an inflammatory response, hemorrhage or local trauma. Females are affected more frequently than males. It occurs over a wide age range.It has been reported that this lesion is diagnosed during the first two decades of life in approximately 48% of cases, and 60% of cases are evident before the age of 30. It is considerably more common in the mandible than in the maxilla. Most lesions occur in the molar and premolar area, some of these extending up to the ascending ramus. The presence of giant cell granuloma in the mandibular body area, the entire ramus, condyle and coronoid represents a therapeutic challenge for the oral and maxillofacial surgeons. The aim of this report is to describe an unusual presentation of central giant cell granuloma involving the mandibular body, ramus, condylar and coronoid processes, and to discuss the differentiated diagnosis, the radiographic presentation and the management of this lesion.

  8. Pulmonary Hyalinizing Granuloma Associated with Idiopathic Thrombocytopenic Purpura

    Directory of Open Access Journals (Sweden)

    Christopher Coleman

    2014-01-01

    Full Text Available Pulmonary hyalinizing granuloma (PHG is a rare, benign lung disease of unknown etiology. It manifests as discrete, rounded nodules within the lung parenchyma. A 39-year-old woman presented for investigation after pulmonary nodules were found incidentally. Chest computed tomography showed multiple, discrete, non-enhancing pulmonary nodules bilaterally. Positron emission tomography (PET was negative. Biopsy demonstrated a non-specific lymphoplasmacytic infiltrate. Open resection yielded two nodules consistent with hyalinizing granulomas. The differential for multiple pulmonary nodules is broad. PET scan can help rule out metastatic disease, although some cancers are not hypermetabolic on PET. Furthermore, some non-malignant conditions, including hyalinizing granuloma, can show increased activity on PET. PHG should be included in the differential of multiple pulmonary nodules, especially if nodule stability can be demonstrated and/or needle biopsies are non-diagnostic. Associated immune-mediated conditions, such as idiopathic thrombocytopenic purpura (ITP in our patient, may also favor HG. In this case report we find an association between PHG and ITP.

  9. Measurement of Apex Offsets for Fiber Connector End Faces

    Institute of Scientific and Technical Information of China (English)

    XU Yong-xiang; ZHU Ri-hong; CHEN Lei

    2006-01-01

    As one of the most important geometric parameters for a PC-type fiber connector end face, apex offset can contribute to high insertion loss and high back-reflection reading. A novel measurement method for the parameter, connector rotating-π method, is proposed. With the method, the apex offset of a common connector end face is measured. The result is compared with that measured by a Norland 3 000 fiber connector end face interferometer. It is found that the difference between two results is 1.8 μm. Meantime, the influences of relevant error resources on apex offset measurement under rotating-π method and apex-core method are respectively analyzed, and two error equations are derived. The analytical result shows that, compared with apex-core method, if two additional sub-tilts of axis within and in the direction perpendicular to principal plane caused by its rotation are not bigger than the original axis tilt angle, the max. measurement error will then be reduced by at least 22.5% with rotating-π method. The practicability of the method is confirmed by the experiments.

  10. An in vivo radiographic evaluation of the accuracy of Apex and iPex electronic Apex locators.

    Science.gov (United States)

    Paludo, Laura; Souza, Sophia Lopes de; Só, Marcus Vinícius Reis; Rosa, Ricardo Abreu da; Vier-Pelisser, Fabiana Vieira; Duarte, Marco Antônio Húngaro

    2012-01-01

    The aim of this study was to evaluate in vivo the clinical applicability of two electronic apex locators (EALs) - Apex (Septodont) and iPex (NSK) - in different groups of human teeth by using radiography. The working lengths (WLs) of 100 root canals were determined electronically. The EAL to be used first was chosen randomly and a K-file was inserted into the root canal until the EAL display indicated the location of the apical constriction (0 mm). The K-file was fixed to the tooth and a periapical radiograph was taken using a radiographic film holder. The K-file was removed and the WL was measured. The same procedure was repeated using the other EAL. Radiographs were examined with the aid of a light-box with lens of ×4 magnification by two blinded experienced endodontists. The distance between the file tip and the root apex was recorded as follows: (A) +1 to 0 mm, (B) -0.1 to 0.5 mm, (C) -0.6 to 1 mm, (D) -1.1 to 1.5 mm, and (E) -1.6 mm or greater. For statistical purposes, these scores were divided into 2 subgroups according to the radiographic apex: acceptable (B, C, and D) and non-acceptable (A and E). Statistically significant differences were not found between the results of Apex and iPex in terms of acceptable and non-acceptable measurements (p>0.05) or in terms of the distance recorded from file tip and the radiographic apex (p>0.05). Apex and iPex EALs provided reliable measurements for WL determination for endodontic therapy.

  11. Giant cell reparative granuloma in soft tissue of foot: A case report

    Energy Technology Data Exchange (ETDEWEB)

    Park, Gyeong Min; Lee, Jihae; Kang, Mijin; Lee, Han Bee; Bae, Kyung Eun; Kim, Jae Hyung; Kim, Hyun Jung [Sanggye Paik Hospital, Inje University College of Medicine, Seoul (Korea, Republic of)

    2014-01-15

    Giant cell reparative granuloma is a benign reactive process following intraosseous hemorrhage rather than a true tumor. This lesion most commonly affects the maxilla and mandible, followed by phalanges, hands, and feet. Local invasion of surrounding soft tissue is a typical feature of giant cell reparative granuloma in the bones of the upper and lower limbs. We present the rare case of giant cell reparative granuloma arising from soft tissue of the foot without erosion or engulfing of the adjacent bone.

  12. Pyogenic granuloma in relation to dental implants: clinical and histopathological findings

    OpenAIRE

    Anitua Aldecoa, Eduardo; Piñas Caballero, Laura

    2015-01-01

    Background The occurrence of pyogenic granuloma in association to dental implants is rare and only five cases have been reported in the literature. Material and Methods Patients charts were analyzed to select patients who had been diagnosed for pyogenic granuloma and its association with dental implants had been evaluated. The clinical status of the dental implants and the prosthesis had also been assessed. Results Clinical and histopathological diagnosis of pyogenic granuloma had been reache...

  13. Substance P Signaling Contributes to Granuloma Formation in Taenia crassiceps Infection, a Murine Model of Cysticercosis

    OpenAIRE

    Armandina Garza; David J Tweardy; Joel Weinstock; Balaji Viswanathan; Prema Robinson

    2010-01-01

    Cysticercosis is an infection with larval cysts of the cestode Taenia solium. Through pathways that are incompletely understood, dying parasites initiate a granulomatous reaction that, in the brain, causes seizures. Substance P (SP), a neuropeptide involved in pain-transmission, contributes to inflammation and previously was detected in granulomas associated with dead T. crassiceps cysts. To determine if SP contributes to granuloma formation, we measured granuloma-size and levels of IL-1β, TN...

  14. An overview of electronic apex locators: part 1.

    Science.gov (United States)

    Ali, R; Okechukwu, N C; Brunton, P; Nattress, B

    2013-02-01

    To effectively carry out root canal therapy, the clinician must accurately determine the apical limit of the root canal system as well as the position of the canal terminus. Its position can be estimated using a variety of techniques, including radiographs, tactile feedback from endodontic instruments and electronic apex locators. This article describes the micro-anatomy of the apical terminus, different methods of measuring root canal system length and how a tooth can function as an electrical capacitor. This capacitor model represents a starting point upon which all apex locators are based. An understanding of this model can help the practitioner to optimise the use of apex locators, understand their limitations and avoid errors that can occur.

  15. Links between granuloma annulare, necrobiosis lipoidica diabeticorum and childhood diabetes: a matter of time?

    Science.gov (United States)

    Davison, James E; Davies, Alison; Moss, Celia; Kirk, Jeremy M W; Taibjee, Saleem M; Agwu, J Chizo

    2010-01-01

    Diabetes mellitus is associated with a range of dermatologic presentations, including granuloma annulare and necrobiosis lipoidica diabeticorum. Granuloma annulare occurs earlier than necrobiosis lipoidica diabeticorum and the association with diabetes mellitus is much weaker. We describe two children with diabetes who both developed granuloma annulare and later, necrobiosis lipoidica diabeticorum. We postulate that the early onset and transient nature of granuloma annulare, compared with the later onset and persistence of necrobiosis lipoidica diabeticorum, might account for the different apparent rates of association with diabetes mellitus.

  16. Management of oral pyogenic granuloma with sodium tetra decyl sulphate. A case series.

    Science.gov (United States)

    Samatha, Y; Reddy, T Harshavardhan; Jyothirrmai; Ravikiran, A; Sankar, A J Sai

    2013-01-01

    Pyogenic granuloma, or granuloma pyogenicum, is a common, tumor-like growth of the oral cavity or skin that is considered to be an exaggerated, localized connective tissue reaction to a minor injury or irritation. A total of five clinical cases of oral pyogenic granuloma were randomly selected in the age group between 26 and 41 years. All these cases were treated with sodium tetra decyl sulphate and examined for regression and reccurrence of the lesion for six months. Various treatment modalities consist of conservative surgical excision, cryosurgery, laser surgery and sclerotherapy. Sclerotherapy with sodium tetra decyl sulphate is a relatively simple and effective method for treating oral pyogenic granuloma.

  17. Study of foramen openings and their concurrence with root apexes

    Directory of Open Access Journals (Sweden)

    Sandra Maria Alves SAYÃO MAIA

    2005-05-01

    Full Text Available The present study is aimed at evaluating the anatomic concurrencebetween foramen openings and root apexes of 247 upper and lowerpermanent human molar canals, the distance between these structures,the instrument that best fits into the root canal, as well as the direction of foramen deviation. Sixty-four of the canals were partially impenetrable and were discarded. The findings showed that 39.9% of the root canals studied had their apical foramen concurrent with their root apexes and 60.1% did not. Clinicians must be made aware of this important anatomical detail, which could be indispensable for successful endodontic treatment.

  18. Cholesterol and prostate cancer.

    Science.gov (United States)

    Pelton, Kristine; Freeman, Michael R; Solomon, Keith R

    2012-12-01

    Prostate cancer risk can be modified by environmental factors, however the molecular mechanisms affecting susceptibility to this disease are not well understood. As a result of a series of recently published studies, the steroidal lipid, cholesterol, has emerged as a clinically relevant therapeutic target in prostate cancer. This review summarizes the findings from human studies as well as animal and cell biology models, which suggest that high circulating cholesterol increases risk of aggressive prostate cancer, while cholesterol lowering strategies may confer protective benefit. Relevant molecular processes that have been experimentally tested and might explain these associations are described. We suggest that these promising results now could be applied prospectively to attempt to lower risk of prostate cancer in select populations.

  19. Prevotella intermedia and Porphyromonas gingivalis in dental caries with periapical granuloma

    Directory of Open Access Journals (Sweden)

    Risya Cilmiaty

    2013-12-01

    Full Text Available Background: Dental caries with necrotic pulp is a multifactorial disease that attacks enamel involving tooth pulp. The anaerobic bacteria infection in the pulp chamber could induce the formation of periapical granuloma. However, the presence of the most frequently anaerobic bacteria identified in apical periodontitis, Porphyromonas gingivalis and Prevotella intermedia, in periapical granuloma have not been confirmed. Purpose: The aims of study were to determine the presence of Porphyromonas gingivalis and Prevotella intermedia in dental caries with necrotic pulp and to determine its relation to periapical granuloma. Methods: Thirty-six patients of dental caries with necrotic pulp in Dr. Moewardi General Hospital in Surakarta, Indonesia were involved and classified into two groups, the group of patients with periapical granuloma and the group of patients without periapical granuloma. The caries tooth was extracted, and the chronic periapical tissue was swabbed and cultured on blood agar medium in anaerobic condition. The bacterial DNA was extracted from the positive cultures and subjected for Polymerase Chain Reaction (PCR. Results: Periapical granuloma was more likely found in women (OR 5.5, 95% CI=1.277-23.693; RR 2.5, 95% CI= 1.025-6.100. Black colonies bacteria were associated with periapical granuloma (OR 2.2, 95% CI=0.517-9.594; RR 1.5, 95% CI=0.655-3.623. Porphyromonas gingivalis and Prevotella intermedia were detected in group with or without periapical granuloma, however, only Prevotella intermedia was associated with periapical granuloma (OR 1.6, 95% CI=0.418-5.903; RR 1.3, 95% CI=0.653-2.393. Conclusion: The presence of Porphyromonas gingivalis and Prevotella intermedia in periapical granuloma were confirmed, however, only Prevotella intermedia were associated with periapical granuloma.Latar belakang: Karies gigi dengan pulpa nekrosis adalah penyakit multifaktorial yang menyerang enamel hingga ruang pulpa gigi. Infeksi bakteri anaerob

  20. Cholesterol and myelin biogenesis.

    Science.gov (United States)

    Saher, Gesine; Simons, Mikael

    2010-01-01

    Myelin consists of several layers of tightly compacted membranes wrapped around axons in the nervous system. The main function of myelin is to provide electrical insulation around the axon to ensure the rapid propagation of nerve conduction. As the myelinating glia terminally differentiates, they begin to produce myelin membranes on a remarkable scale. This membrane is unique in its composition being highly enriched in lipids, in particular galactosylceramide and cholesterol. In this review we will summarize the role of cholesterol in myelin biogenesis in the central and peripheral nervous system.

  1. Intestinal cholesterol transport: Measuring cholesterol absorption and its reverse

    NARCIS (Netherlands)

    Jakulj, L.

    2013-01-01

    Intestinal cholesterol transport might serve as an attractive future target for cardiovascular disease reduction, provided that underlying molecular mechanisms are more extensively elucidated, combined with improved techniques to measure changes in cholesterol fluxes and their possible anti-atherosc

  2. Phosphorus modeling in tile drained agricultural systems using APEX

    Science.gov (United States)

    Phosphorus losses through tile drained systems in agricultural landscapes may be causing the persistent eutrophication problems observed in surface water. The purpose of this paper is to evaluate the state of the science in the Agricultural Policy/Environmental eXtender (APEX) model related to surf...

  3. Aspergillosis of the Petrous Apex and Meckel's Cave

    OpenAIRE

    Ederies, Ash; Chen, Joseph; Aviv, Richard I.; Pirouzmand, Farhad; Bilbao, Juan M.; Thompson, Andrew L.; Symons, Sean P.

    2010-01-01

    Cranial cerebral aspergillosis is a rare entity in immunocompetent patients. Invasive disease involving the petrous apex and Meckel's cave has rarely been described. We present a case of localized invasive petrous apical and Meckel's cave disease in an immunocompetent patient who presented with hemicranial neuralgic pain.

  4. Aspergillosis of the Petrous Apex and Meckel's Cave.

    Science.gov (United States)

    Ederies, Ash; Chen, Joseph; Aviv, Richard I; Pirouzmand, Farhad; Bilbao, Juan M; Thompson, Andrew L; Symons, Sean P

    2010-05-01

    Cranial cerebral aspergillosis is a rare entity in immunocompetent patients. Invasive disease involving the petrous apex and Meckel's cave has rarely been described. We present a case of localized invasive petrous apical and Meckel's cave disease in an immunocompetent patient who presented with hemicranial neuralgic pain.

  5. Interference of electronic apex locators with implantable cardioverter defibrillators

    NARCIS (Netherlands)

    Idzahi, K.; de Cock, C.C.; Shemesh, H.; Brand, H.S.

    2014-01-01

    Introduction The purpose of this in vitro study was to evaluate the potential electromagnetic interference of electronic apex locators (EALs) on implantable cardioverter defibrillators (ICDs). Methods Four different EALs were tested for their ability to interfere with the correct function of 3 diffe

  6. An evaluation of root ZX and elements diagnostic apex locators.

    Science.gov (United States)

    Tselnik, Marat; Baumgartner, J Craig; Marshall, J Gordon

    2005-07-01

    The purpose of this study was to compare the accuracy of the Root ZX and Elements Diagnostic electronic apex locators under clinical conditions. Thirty-six teeth planned for extraction were used. Each tooth was decoronated, coronally flared with Orifice Shapers, and irrigated with 2.6% sodium hypochlorite. Working lengths were measured with K-files using both electronic apex locators. The files were cemented at the last measured working length and the teeth were extracted. The apical 4-mm of each canal were exposed and photographed under 15x and 30x magnification. Images of each apex were projected and the distance from the file tip to the minor diameter was determined. The mean distances from the file tip to the minor diameter were 0.346 mm for the Elements Diagnostic and 0.410-mm for the Root ZX beyond the minor constriction. In locating the minor constriction the Root ZX was accurate 75% of the time to +/-0.5 mm, 83.3% +/-0.75 mm, and 88.9% to +/-1 mm. The Elements Diagnostic was accurate 75% of the time to +/-0.5 mm, 88.9% to +/-0.75 mm, and 91.7% to +/-1 mm. There was no statistically significant difference between the accuracy of the two electronic apex locators in locating the minor diameter (p < 0.05).

  7. Coexistence of disseminated granuloma annulare and asymptomatic multiple myeloma

    Directory of Open Access Journals (Sweden)

    Şebnem Aktan

    2013-09-01

    Full Text Available Granuloma annulare (GA is a benign inflammatory dermatosis of unknown cause, characterized by necrobiotic dermal papules. Several morphologic forms of GA including localized, disseminated, linear, nodular, perforating, subcutaneous, pustular and arcuate dermal erythema have been reported in the literature. Disseminated GA, a rarely seen form, has been reported in association with some hematopoietic and solid malignancies; however, it has been suggested that the exact causative relationship between malignancy and GA is unclear. We present here a 66-year-old female patient with disseminated GA associated with asymptomatic multipl myeloma.

  8. Ultrasonographic study of subcutaneous penile granuloma secondary to silicone injection

    Directory of Open Access Journals (Sweden)

    Lucio Dell'Atti

    2016-10-01

    Full Text Available Penile augmentation has been reported in the literature by injecting various materials. This study reports our experience in management of penile augmentation complications associated with selfpenile injection of silicone liquid. After a careful ultrasound study, the penile skin was excised through a circumferential sub-coronal incision and dissected with the silicon mass. Histology was well-compatible with silicone granulomas. The patient was discharged after 24 hours. Ultrasonography has permitted preoperatively to determine if the plane between the indurated inflammatory tissue and the Buck’s fascia was preserved for the complete surgical excision of affected tissue.

  9. Hepatic changes during a carrageenan induced granuloma in rats

    Directory of Open Access Journals (Sweden)

    J. Muntané

    1993-01-01

    Full Text Available Hepatic changes during inflammation were studied in rats bearing a carrageenan induced granuloma. In spite of a decrease in the metabolic capacity of microsomes to induce lipid peroxidation during inflammation, the endogenous lipid peroxidation remained unchanged and unrelated with the hepatic activities measured. The continuous increase in hepatic cAMP observed during acute and chronic phases could be related to adenylate cyclase stimulation by mediators, and could be an initial step in the hepatocyte adaptation leading to the increased level of hepatic caeruloplasmin, to the reduction of cytochrome P-450 level and to the modifications of Ca2+ sequestration by microsomes.

  10. Idiopathic ulcerative laryngitis causing midmembranous vocal fold granuloma.

    Science.gov (United States)

    Sinclair, Catherine F; Sulica, Lucian

    2013-02-01

    Idiopathic ulcerative laryngitis (IUL) is characterized by bilateral midmembranous vocal fold ulceration, which follows upper respiratory infection with cough. In contrast, granuloma of the membranous vocal fold can occur rarely following microlaryngoscopy, presumably secondary to surgical violation of deep tissue planes. We report a novel case of noniatrogenic membranous vocal fold granulation developing in a patient with IUL. Although the presence of granulation implied injury to the entire microstructure of the vibratory portion of the vocal fold, the lesion resolved with conservative management without adverse sequelae.

  11. Hızma Induced Papul of Nose Mimicking Pyogenic Granuloma

    Directory of Open Access Journals (Sweden)

    Mualla Polat

    2014-09-01

    Full Text Available The application of body piercing is popular among young people, who consider it as a sign of marginality, beauty, or group identity. Piercing procedure is observed to cause a large number of complications such as infections, pain, inflammatory reactions, bleeding, dental fractures or fissures, and gingival damage, etc., mostly in young individuals. Hizma is a traditional body ornament worn by Anatolian women via a piercing procedure. Herein, we describe a papule of nose mimicking pyogenic granuloma as an uncommon complication of Hızma.

  12. Regulation of cholesterol homeostasis

    NARCIS (Netherlands)

    van der Wulp, Mariette Y. M.; Verkade, Henkjan J.; Groen, Albert K.

    2013-01-01

    Hypercholesterolemia is an important risk factor for cardiovascular disease. It is caused by a disturbed balance between cholesterol secretion into the blood versus uptake. The pathways involved are regulated via a complex interplay of enzymes, transport proteins, transcription factors and non-codin

  13. Transintestinal cholesterol efflux

    NARCIS (Netherlands)

    van der Velde, Astrid E.; Brufau, Gemma; Groen, Albert K.

    2010-01-01

    Purpose of review Regulation of cholesterol homeostasis is a complex interplay of a multitude of metabolic pathways situated in different organs. The liver plays a central role and has received most attention of the research community. In this review, we discuss recent progress in the understanding

  14. Cholesterol: Up in Smoke.

    Science.gov (United States)

    Raloff, Janet

    1991-01-01

    Discussed is the contribution cooked meat makes to air pollution. The dozens of compounds, including cholesterol, that are released when a hamburger is grilled are described. The potential effects of these emissions on humans and the urban environment are discussed. (KR)

  15. Simultaneous occurrence of ulcerated necrobiosis lipoidica and granuloma annulare in a patient: case report.

    Science.gov (United States)

    Souza, Fernanda Homem de Mello de; Ribeiro, Camila Ferrari; Pereira, Marcela Abou Chami; Mesquita, Lismary; Fabrício, Lincoln

    2011-01-01

    Simultaneous occurrence of granuloma annulare and necrobiosis lipoidica is quite rare. There are seven reported cases in the literature, but only one presenting ulcerated necrobiosis lipoidica. We report a 39-year-old male with histopathologically confirmed granuloma annulare and ulcerated necrobiosis lipoidica, without diabetes mellitus.

  16. Modeling the Mycobacterium tuberculosis granuloma – The critical battlefield in host immunity and disease

    Directory of Open Access Journals (Sweden)

    Evelyn eGuirado

    2013-04-01

    Full Text Available Granulomas are the hallmark of Mycobacterium tuberculosis (M.tb infection and thus sit at the center of tuberculosis (TB immunopathogenesis. TB can result from either early progression of a primary granuloma during the infection process or reactivation of an established granuloma in a latently infected person. Granulomas are compact, organized aggregates of immune cells consisting of blood-derived infected and uninfected macrophages, foamy macrophages, epithelioid cells (uniquely differentiated macrophages and multinucleated giant cells (Langerhans cells surrounded by a ring of lymphocytes. The granuloma’s main function is to localize and contain M.tb while concentrating the immune response to a limited area. However, complete eradication does not occur since M.tb has its own strategies to persist within the granuloma and to reactivate and escape under certain conditions. Thus M.tb-containing granulomas represent a unique battlefield for dictating both the host immune and bacterial response. The architecture, composition, function and maintenance of granulomas are key aspects to study since they are expected to have a profound influence on M.tb physiology in this niche. Granulomas are not only present in mycobacterial infections; they can be found in many other infectious and non-infectious diseases and play a crucial role in immunity and disease. Here we review the models currently available to study the granulomatous response to M.tb.

  17. Cholesterol transport in model membranes

    Science.gov (United States)

    Garg, Sumit; Porcar, Lionel; Butler, Paul; Perez-Salas, Ursula

    2010-03-01

    Physiological processes distribute cholesterol unevenly within the cell. The levels of cholesterol are maintained by intracellular transport and a disruption in the cell's ability to keep these normal levels will lead to disease. Exchange rates of cholesterol are generally studied in model systems using labeled lipid vesicles. Initially donor vesicles have all the cholesterol and acceptor vesicles are devoid of it. They are mixed and after some time the vesicles are separated and cholesterol is traced in each vesicle. The studies performed up to date have significant scatter indicating that the methodologies are not consistent. The present work shows in-situ Time-Resolved SANS studies of cholesterol exchange rates in unsaturated PC lipid vesicles. Molecular dynamics simulations were done to investigate the energetic and kinetic behavior of cholesterol in this system. This synergistic approach will provide insight into our efforts to understand cholesterol traffic.

  18. MES buffer affects Arabidopsis root apex zonation and root growth by suppressing superoxide generation in root apex

    Directory of Open Access Journals (Sweden)

    Tomoko eKagenishi

    2016-02-01

    Full Text Available In plants, growth of roots and root hairs is regulated by the fine cellular control of pH and reactive oxygen species. MES, 2-(N-morpholinoethanesulfonic acid as one of the Good’s buffers has broadly been used for buffering medium, and it is thought to suit for plant growth with the concentration at 0.1% (w/v because the buffer capacity of MES ranging pH 5.5-7.0 (for Arabidopsis, pH 5.8. However, many reports have shown that, in nature, roots require different pH values on the surface of specific root apex zones, namely meristem, transition zone and elongation zone. Despite the fact that roots always grow on a media containing buffer molecule, little is known about impact of MES on root growth. Here, we have checked the effects of different concentrations of MES buffer using growing roots of Arabidopsis thaliana. Our results show that 1% of MES significantly inhibited root growth, the number of root hairs and length of meristem, whereas 0.1% promoted root growth and root apex area (region spanning from the root tip up to the transition zone. Furthermore, superoxide generation in root apex disappeared at 1% of MES. These results suggest that MES disturbs normal root morphogenesis by changing the reactive oxygen species (ROS homeostasis in root apex.

  19. Micosis Fungoide Intersticial: Diagnóstico diferencial con el Granuloma Anular Intersticial Interstitial Mycosis Fungoides: Differential diagnosis with Interstitial Granuloma Annulare

    OpenAIRE

    RE Achenbach; LJA Lococo; GF Sánchez; S Monroy; MI Jorge; EH Pittaro

    2011-01-01

    La micosis fungoide en su variante histopatológica intersticial, puede ser confundida con el granuloma anular intersticial. Se ejemplifican dos casos de micosis fungoide intersticial y se subrayan los criterios histopatológicos para el diagnóstico diferencial, entre estas dos entidades.The interstitial type of mycosis fungoides and the interstitial type of granuloma annulare have several findings in common, in some cases may be difficult to differentiate them. Two cases of interstitial mycosi...

  20. Cholesterol excretion and colon cancer.

    Science.gov (United States)

    Broitman, S A

    1981-09-01

    Populations consuming diets high in fat and cholesterol exhibit a greater incidence of colon cancer than those consuming less fat and cholesterol. Lowering elevated serum cholesterol levels experimentally or clinically is associated with increased large-bowel tumorigenesis. Thus, cholesterol lost to the gut, either dietary or endogenously synthesized, appears to have a role in large-bowel cancer. Whether the effect(s) is mediated by increases in fecal bile acid excretion or some other mechanism is not clear.

  1. Functional complexity of the Leishmania granuloma and the potential of in silico modelling

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    John eMoore

    2013-02-01

    Full Text Available AbstractIn human and canine visceral leishmaniasis and in various experimental models of this disease, host resistance is strongly linked to efficient granuloma development. However, it is unknown exactly how the granuloma microenvironment executes an effective antileishmanial response. Recent studies, including using advanced imaging techniques have improved our understanding of granuloma biology, at the cellular level, highlighting heterogeneity in granuloma development and function, and hinting at complex cellular, temporal and spatial dynamics. In this mini-review, we discuss the factors involved in the formation and function of L.donovani-induced hepatic granulomas, as well as their importance in protecting against inflammation-associated tissue damage and the generation of immunity to rechallenge. Finally, we discuss the role that computational, agent-based models may play to answer outstanding questions within the field.

  2. Allopurinol induced granuloma annulare in a patient of lepromatous leprosy

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    Satyendra Kumar Singh

    2013-01-01

    Full Text Available Granuloma annulare (GA is a benign, inflammatory dermatosis involving dermis or subcutis with unknown etiology and poorly understood pathology. GA has characteristic histological features of necrobiosis, granuloma formation and abundant mucin deposition. Various predisposing factors, systemic diseases and drugs have been implicated in the etiology. We hereby describe a case of 70 year old male who was a known case of lepromatous leprosy, taking multidrug therapy for 6 months presented with multiple discrete, annular, firm, non tender, smooth surfaced skin colored papular lesions ranging in size from 0.5-1 cm over back for 1 month. There was past history of intake of allopurinol for hyperuricemia which was started 1 year back. There was history of similar lesions 6 months back which healed within 1 month of stopping allopurinol and he started taking the drug for the past 4 months on his own without any medical advice. Histopathological examination showed superficial and deep perivascular lymphocytic infiltrate with numerous histiocytes scattered in the intersititum of reticular dermis and abundant mucin in between the histiocytes. Allopurinol was implicated as an etiological agent and dramatic improvement was seen after stopping the drug for a period of 4 weeks. Naranjo′s algorithm showed a probable association with a score of 6. Thus the final diagnosis of allopurinol induced generalised interstitial granuolma annulare was made. Patient was advised to continue antileprotic drugs, low purine diet and avoid allopurinol intake.

  3. Destructive granuloma derived from a liver cyst: A case report

    Institute of Scientific and Technical Information of China (English)

    Yujo Kawashita; Takashi Kanematsu; Yukio Kamohara; Junichiro Furui; Fumihiko Fujita; Shungo Miyamoto; Mitsuhisa Takatsuki; Kuniko Abe; Tomayoshi Hayashi; Yasuharu Ohno

    2006-01-01

    We herein report the case of an idiopathic liver cystic mass which aggressively infiltrated the thoracoabdominal wall. A 74-year-old woman who had a huge cystic lesion in her right hepatic lobe was transferred to our hospital for further examinations. Imaging studies revealed a simple liver cyst, and the cytological findings of intracystic fluid were negative. She was followed up periodically by computed tomography (CT) scans. Seven years later, she complained of a prominence and dull pain in her right thoraco-abdominal region. CT revealed an enlargement of the cystic lesion and infiltration into the intercostal subcutaneous tissue. We suspected the development of a malignancy inside the liver cyst such as cystadenocarcinoma, and she therefore underwent surgery. A tumor extirpation was performed, including the chest wall, from the 7th to the 10th rib, as well as a right hepatic lobectomy. Pathologically, the lesion consisted of severe inflammatory change with epithelioid cell granuloma and bone destruction without any malignant neoplasm. No specific pathogens were evident based on further histological and molecular examinations. Therefore the lesion was diagnosed to be a destructive granuloma associated with a long-standing hepatic cyst. Since undergoing surgery, the patient has been doing well without any signs of recurrence.

  4. Contribution to the radiological study of the eosinophilic granuloma of the mandible (Unifocal granuloma due to Langherans' cell histiocytosis); Contributo allo studio radiologico del granuloma eosinofilo della mandibola (granuloma unifocale da istiocitosi delle cellule di Lagherhans)

    Energy Technology Data Exchange (ETDEWEB)

    Chigi, Gino; Pastremoli, Alessandro; Pisi, Paolo; Pastremoli, Alfredo [Bologna Univ., Bologna (Italy). Dipartimento di scienze odontomastologiche; Bianchi, Giuseppe [Istituti Ortopedici Rizzoli, Bologna (Italy)

    2005-04-01

    Purpose: The radiological diagnosis of osteolytic lesions of the mandible still constitutes a challenge in some pathological conditions in which the clinical data and the case history are relatively uniform and the radiological picture is lacking in any characteristics. Materials and methods: We reviewed the conventional radiograms of six cases of Langherans' cell histiocytosis (LCH) of the mandible examined over the last ten years. The X-ray examinations were performed in the lateral-oblique projection to allow a view of the horizontal portion of the mandible almost completely free of overlapping images of other bone structures. Results: We identified a series of radiological patterns for these reticulo-endotheliopathies capable of causing granuloma formed by polinuclear eosinophils, plasma cells, lymphocytes, and large mononuclear macrophages with granulopexic and phagocytic activity that proliferate in the bone tissue and can be identified as the Langherans' cells of skin, mucosa, periodontal cavities and bone marrow. The granulomatous tissue penetrates the affected organ elements and, in its spread, it compresses, atrophies, and destroyed the damaged tissue, replacing it. The alterations produced by Langherans' cell histiocytic granuloma are most common in the skeletal system affecting, in order of frequency, the skull, the long bones of the limbs, the foot, the ribs and the spine. The oral mucosa is rarely involved. Conclusions: The radiological investigation of unifocal Langherans' cell histiocytic granuloma of the mandible is essential in the study of perimandibular swelling, although diagnosis is based on biopsy alone. In addition to digital or conventional radiography, other useful examinations are bone scintigraphy, Colour Doppler US, MR and CT, which enables a correct localisation necessary for planning the biopsy and treatment. [Italian] Scopo: La diagnosi radiologica delle lesioni osteolitiche della mandibola costituisce un problema

  5. How to Get Your Cholesterol Tested

    Science.gov (United States)

    ... Thromboembolism Aortic Aneurysm More How To Get Your Cholesterol Tested Updated:Apr 3,2017 Cholesterol plays a ... factors for heart disease and stroke . How is cholesterol tested? A cholesterol screening measures your level of ...

  6. Cholesterol crystal embolism (atheroembolism)

    Science.gov (United States)

    VENTURELLI, CHIARA; JEANNIN, GUIDO; SOTTINI, LAURA; DALLERA, NADIA; SCOLARI, FRANCESCO

    2006-01-01

    Cholesterol crystal embolism, known as atheroembolic disease, is caused by showers of cholesterol crystals from an atherosclerotic plaque that occludes small arteries. Embolization can occur spontaneously or as an iatrogenic complication from an invasive vascular procedure (angiography or vascular surgery) and after anticoagulant therapy. The atheroembolism can give rise to different degrees of renal impairment. Some patients show a moderate loss of renal function, others severe renal failure requiring dialysis. Renal outcome can be variable: some patients deteriorate or remain on dialysis, some improve and some remain with chronic renal impairment. Clinically, three types of atheroembolic renal disease have been described: acute, subacute or chronic. More frequently a progressive loss of renal function occurs over weeks. Atheroembolization can involve the skin, gastrointestinal system and central nervous system. The diagnosis is difficult and controversial for the protean extrarenal manifestations. In the past, the diagnosis was often made post-mortem. In the last 10 yrs, awareness of atheroembolic renal disease has improved. The correct diagnosis requires the clinician to be alert. The typical patient is a white male aged >60 yrs with a history of hypertension, smoking and arterial disease. The presence of a classic triad (precipitating event, renal failure and peripheral cholesterol crystal embolization) suggests the diagnosis. This can be confirmed by a biopsy of the target organs. A specific treatment is lacking; however, it is an important diagnosis to make because an aggressive therapeutic approach can be associated with a more favorable clinical outcome. PMID:21977265

  7. Cholesterol binding to ion channels

    Directory of Open Access Journals (Sweden)

    Irena eLevitan

    2014-02-01

    Full Text Available Numerous studies demonstrated that membrane cholesterol is a major regulator of ion channel function. The goal of this review is to discuss significant advances that have been recently achieved in elucidating the mechanisms responsible for cholesterol regulation of ion channels. The first major insight that comes from growing number of studies that based on the sterol specificity of cholesterol effects, show that several types of ion channels (nAChR, Kir, BK, TRPV are regulated by specific sterol-protein interactions. This conclusion is supported by demonstrating direct saturable binding of cholesterol to a bacterial Kir channel. The second major advance in the field is the identification of putative cholesterol binding sites in several types of ion channels. These include sites at locations associated with the well-known cholesterol binding motif CRAC and its reversed form CARC in nAChR, BK, and TRPV, as well as novel cholesterol binding regions in Kir channels. Notably, in the majority of these channels, cholesterol is suggested to interact mainly with hydrophobic residues in non-annular regions of the channels being embedded in between transmembrane protein helices. We also discuss how identification of putative cholesterol binding sites is an essential step to understand the mechanistic basis of cholesterol-induced channel regulation. Clearly, however, these are only the first few steps in obtaining a general understanding of cholesterol-ion channels interactions and their roles in cellular and organ functions.

  8. Wholly Endoscopic Permeatal Removal of a Petrous Apex Cholesteatoma

    Directory of Open Access Journals (Sweden)

    Todd Kanzara

    2014-01-01

    Full Text Available We report a case of a petrous apex cholesteatoma which was managed with a wholly endoscopic permeatal approach. A 63-year-old Caucasian male presented with a 10-year history of right-sided facial palsy and profound deafness. On examination in our clinic, the patient had a grade VI House-Brackmann paresis, otoscopic evidence of attic cholesteatoma behind an intact drum, and extensive scarring of the face from previous facial reanimation surgery. Imaging review was suggestive of petrous apex cholesteatoma. An initial decision to manage the patient conservatively was later reviewed on account of the patient suffering recurrent epileptic seizures. A wholly endoscopic permeatal approach was used with successful outcomes. In addition to the case report we also provide a brief description of the technique and a review of the relevant literature.

  9. APEX 1 mm line survey of the Orion Bar

    CERN Document Server

    Leurini, S; Thorwirth, S; Parise, B; Schilke, P; Comito, C; Wyrowski, F; Güsten, R; Bergman, P; Menten, K M; Nyman, L A A

    2006-01-01

    Unbiased molecular line surveys are a powerful tool for analyzing the physical and chemical parameters of astronomical objects and are the only means for obtaining a complete view of the molecular inventory for a given source. The present work stands for the first such investigation of a photon-dominated region. The first results of an ongoing millimeter-wave survey obtained towards the Orion Bar are reported. The APEX telescope in combination with the APEX-2A facility receiver was employed in this investigation. We derived the physical parameters of the gas through LVG analyses of the methanol and formaldehyde data. Information on the sulfur and deuterium chemistry of photon-dominated regions is obtained from detections of several sulfur-bearing molecules and DCN.

  10. The Doppler paradigm and the APEX-EPOS-ORANGE quandary

    CERN Document Server

    Griffin, J J

    1996-01-01

    The experimental detection of the sharp lines of the \\ee Puzzle is viewed as a struggle against Doppler broadening. Gedanken experiments which are realistic in zeroth order of detail are analyzed to show that the ORANGE and EPOS/I geometries select narrower slices of a Doppler broadened line than spherically inclusive (APEX and EPOS/II --like) apparati. Roughly speaking, the latter require event-by-event Doppler reconstruction simply to regain an even footing with the former. This suggests that APEX' or EPOS/II's coincident pair distributions must be statistically superior to those of EPOS/I or ORANGE in order to support a comparable inference about sharp structure. Under present circumstances, independent alternative data is invaluable. Therefore, a corroboration of Sakai's 330.1 keV (< 3 keV wide) electron line in few MeV e^+ or e^- bombardments of U and Th targets could prove crucial.

  11. Bifid cardiac apex in a 25-year-old male with sudden cardiac death.

    Science.gov (United States)

    Wu, Annie; Kay, Deborah; Fishbein, Michael C

    2014-01-01

    Although a bifid cardiac apex is common in certain marine animals, it is an uncommon finding in humans. When present, bifid cardiac apex is usually associated with other congenital heart anomalies. We present a case of bifid cardiac apex that was an incidental finding in a 25-year-old male with sudden cardiac death from combined drug toxicity. On gross examination, there was a bifid cardiac apex with a 2-cm long cleft. There were no other significant gross or microscopic abnormalities. This case represents the very rare occurrence of a bifid cardiac apex as an isolated cardiac anomaly.

  12. Mucormycosis with Orbital Apex Syndrome in a Renal Transplant Recipient

    Directory of Open Access Journals (Sweden)

    Ebru Kursun

    2015-06-01

    Full Text Available Mucormycosis is a rarely encountered invasive fungal infection with high mortality.Solid organ transplantation is one of the risk factors for mucormycosis. Mucormycosis can be classified in six different groups according to the anatomical localization; rhinocerebral, pulmonary, cutaneous, gastrointestinal, disseminated, and other less common involvements. This paper presented a mucormycosis case with rhinoorbitocerebral involvementin a renal transplantation receiver, which manifested with orbital apex syndrome. [Cukurova Med J 2015; 40(2.000: 384-389

  13. Langhans giant cells from M. tuberculosis-induced human granulomas cannot mediate mycobacterial uptake.

    Science.gov (United States)

    Lay, G; Poquet, Y; Salek-Peyron, P; Puissegur, M-P; Botanch, C; Bon, H; Levillain, F; Duteyrat, J-L; Emile, J-F; Altare, F

    2007-01-01

    Tuberculosis is characterized by a tight interplay between Mycobacterium tuberculosis (M. tb) and host cells within granulomas. These cellular aggregates restrain M. tb spreading but do not kill all bacilli, which persist for years. A more detailed investigation of the interaction between M. tb and granuloma cells is needed to improve our understanding of this persistence and to explain the physiopathology of tuberculosis. In the present study, a recently developed in vitro human model of tuberculous granulomas has been used to analyse the modulation of granuloma cell differentiation by M. tb, in comparison to poorly virulent mycobacteria, which do not persist. It is reported that whilst all mycobacteria species induce granuloma formation, only M. tb triggers the differentiation of granuloma macrophages into very large multinucleated giant cells (MGCs) that are unable to mediate any bacterial uptake. This loss of function is not due to cell quiescence, as MGCs still display NADPH oxidase activity, but it correlates with decreased expression of phagocytosis receptors. This phenomenon is specific for the virulent species of M. tuberculosis complex, as poorly virulent species only induce the formation of small multinucleated cells (MCs) with conserved mycobacterial uptake ability, which never reach the MGC differentiation stage. The phenotype of MGCs thus strongly resembles mature dendritic cells with a loss of microbial uptake ability, despite conserved antigen presentation. In M. tb-induced granulomas, MGCs thus seem to be devoted to the destruction of bacilli that have been ingested in previous differentiation stages, ie in macrophages and MCs.

  14. The formation of the granuloma in tuberculosis infection.

    Science.gov (United States)

    Orme, Ian M; Basaraba, Randall J

    2014-12-01

    The development of the granuloma and its subsequent degeneration and necrosis, is the hallmark of infection caused by Mycobacterium tuberculosis. These structures probably evolved as primitive particle responses, but in mammals they are facilitated by the emerging acquired immune response, in which cytokines and chemokines help control their formation and integrity. In this brief review we discuss the pathology of these lesions in the two most widely used animal models (mice and guinea pigs). In addition, we argue against the idea that there is a balance between host immunity and bacterial survival, and that the latter possess mechanisms that control this, as some currently believe, and moreover discuss newer information regarding the ability of bacilli to persist in these structures long enough to eventually escape and become retransmitted.

  15. Ultrastructural study of cutaneous lesions in feline eosinophilic granuloma complex.

    Science.gov (United States)

    Bardagí, Mar; Fondati, Alessandra; Fondevila, Dolors; Ferrer, Lluís

    2003-12-01

    The purpose of this study was to investigate the ultrastructural appearance of flame figures, reported to comprise a mixture of degenerate collagen and degranulated eosinophils, in feline eosinophilic granuloma complex (EGC). Skin specimens from eight cats with EGC and from two clinically healthy cats were examined by transmission electron microscopy. Flame figures appeared to comprise ultrastructurally normal collagen fibrils separated by oedema and surrounded by large numbers of degranulating eosinophils. Longitudinal sections of collagen fibrils displayed the characteristic cross-striation of normal dermal collagen. Feline eosinophils, analogous to human eosinophils, degranulated both by cytolysis and piecemeal degranulation. The results of this study suggest that flame figures form in feline EGC due to eosinophil recruitment and degranulation, and that collagen fibres are partially disrupted but collagen fibrils are not damaged. These findings suggest that eosinophil accumulation and the release of granule contents represent the primary events in feline EGC.

  16. Giant cell reparative granuloma of the occipital bone

    Energy Technology Data Exchange (ETDEWEB)

    Santos-Briz, A.; Ricoy, J.R.; Martinez-Tello, F.J. [Department of Anatomical Pathology, Hospital Universitario ' ' 12 de Octubre' ' , Madrid (Spain); Lobato, R.D. [Department of Neurosurgery, Hospital Universitario ' ' 12 de Octubre' ' , Madrid (Spain); Ramos, A.; Millan, J.M. [Department of Radiology, Hospital Universitario ' ' 12 de Octubre' ' , Madrid (Spain); Hospital Universitario 12 de Octubre, Departamento de Anatomia Patologica, Avda. de Andalucia s/n, Madrid 28041 (Spain)

    2003-03-01

    Giant cell reparative granuloma (GCRG) is a non-neoplastic fibrous lesion with unevenly distributed multinucleated giant cells, areas of osseous metaplasia and hemorrhage. The small bones of the hands and feet are the most common sites, followed by the vertebral bodies and craniofacial bones. In the craniofacial bones GCRG has been reported in the temporal bone, in the frontal bone and paranasal sinus. However, to the best of our knowledge no case has been reported in the occipital bone. We report on the imaging findings and pathological features of a GCRG of the occipital bone and discuss the differential diagnosis of this entity in this particular location, especially with giant cell tumor because of the therapeutic and prognostic implications. (orig.)

  17. Giant cell reparative granuloma of the hallux following enchondroma

    Science.gov (United States)

    Kamoun, Khaled; Sellami, Tarak; Jlailia, Zied; Abid, Layla; Jenzri, Mourad; Bouaziz, Mouna; Zouar, Omar

    2015-01-01

    Giant cell reparative granuloma (GCRG) is a rare, benign intra osseous lytic lesion occurring especially in gnathis bone but also seen in feet and hands. It has similar clinical and radiological presentations than giant cell tumor, chondroblastoma, aneurysmal bone cyst, and hyperparathyroidism brown tumors but with specific histological findings We report a case of a GCRG of hallux phalanx in 18 years old patient appearing many years after enchondroma curettage and grafting. Radiographs showed a multiloculated osteolytic lesions involving whole phalanx with cortical thinning and without fluid-fluid levels in CT view. Expected to be an enchondroma recurrence, second biopsy confirmed diagnosis of GCRG with specific histological findings. Although if aetiopathogeny remains unknown, GCRG is reported to be a local non neoplasic reaction to an intraosseous hemorrhage. Our exceptional case claims that this tumor can appear in reaction to cellular disturbance primary or secondary. PMID:26985281

  18. Granuloma inguinale mimicking as squamous cell carcinoma of penis

    Directory of Open Access Journals (Sweden)

    Abhishek Pilani

    2014-01-01

    Full Text Available Granuloma inguinale (GI is an acquired chronic, slowly progressive, mildly contagious disease of venereal origin, characterized by granulomatous ulceration of the genitalia and neighboring sites, with little or no tendency to spontaneous healing caused by Klebsiella (Calymmatobacterium granulomatis. A 55-year-old male presented with fissured, foul smelling, fungating growth over prepuce with phimosis mimicking squamous cell carcinoma (SCC without lymphadenopathy. It started with painless papulonodular showed pseudoepitheliomatous hyperplasia, infiltration in dermis, acanthosis and vacuolated macrophages suggestive of GI and not showing any histopathological features of SCC. Patient was successfully treated by giving cotrimoxazole twice a day for 21 days. Here, we presented a case of GI mimicking SCC of penis, which was diagnosed on basis of histopathology and treated with excision followed by medical therapy with cotrimoxazole.

  19. Transient cortical blindness as a manifestation of solitary cysticercus granuloma.

    Science.gov (United States)

    Hussain, Shabbir; Hussain, Kosar; Hussain, Sahar

    2012-12-10

    Neurocysticercosis is recognised as a significant cause of neurological morbidity in endemic regions. The wide range of pleomorphic and non-specific neurological manifestations of neurocysticercosis must be kept in mind by physicians, as the disease has shown resurgence in developed countries. When an atypical presentation of an unusual tropical disease occurs in non-endemic regions, the diagnosis is often missed. We describe a case of a 4-year-old girl who presented with a history of transient bilateral loss of vision with headache and vomiting. Brain MRI revealed the presence of a single cysticercus granuloma in the occipital lobe. A diagnosis of symptomatic occipital lobe seizure secondary to neurocysticercosis was made. She was given a course of albendazole. There was no recurrence of symptoms at 3 years follow-up. Occipital seizures that are associated with ictal amaurosis closely mimic basilar migraine. Such cases benefit from neuroimaging in order to rule out the underlying structural causes.

  20. Granuloma central de células gigantes

    OpenAIRE

    Cava-Vergiú, Carlos-Enrique; Flores Cueto, Walter; Cáceres La Torre, Andreé

    2006-01-01

    Este artículo presenta el caso de una paciente que acudió a la Clínica Especializada en Odontología de la Universidad de San Martín de Porres. La paciente requería la exodoncia de las terceras molares inferiores. Mediante el examen radiológico se observó una imagen radiolúcida con bordes definidos a nivel apical de las piezas 4.7 y 4.8. El diagnóstico presuntivo planteado fue granuloma central de células gigantes. La presentación de esta lesión es muy rara y puede ser de crecimiento ...

  1. Giant cell reparative granuloma of the sphenoid bone.

    Science.gov (United States)

    Aralasmak, A; Aygun, N; Westra, W H; Yousem, D M

    2006-09-01

    We present 2 patients with giant cell reparative granuloma (GCRG) of the sphenoid bone. The first patient is an 8-year-old boy with involvement of the greater wing, and the second is a 53- year-old man with a lateral pterygoid plate mass. Both patients presented with rapid expansion of lytic bone lesions, which had solid and cystic components and lacked matrix calcification. Biopsies were indeterminate for definitive diagnoses. The radiologic appearance, location, and incidence of the lesions, and the patient's age and medical history are helpful aids in narrowing the differential diagnosis of sphenoid bone lesions. However, the imaging and, occasionally, even the histologic findings may not suggest the specific diagnosis of GCRG, which must be added into the differential diagnosis of rapidly enlarging cystic bone lesions of the sphenoid bone.

  2. Pacing Lead-Induced Granuloma in the Atrium: A Foreign Body Reaction to Polyurethane

    Directory of Open Access Journals (Sweden)

    Shinagawa Yoko

    2013-01-01

    Full Text Available We described a case of an 82-year-old male who presented with a granuloma entrapping the polyurethane-coated pacing lead at the site of contact on the atrium. He had been paced for 8 years without symptoms or signs suggestive of an allergic reaction to the pacemaker system and died from thrombosis of the superior mesenteric artery and heart failure. A histological examination of the nodule showed an incidental granuloma with multinucleated giant cells. No granuloma was found in the heart or the lung.

  3. Characterization of placental cholesterol transport

    DEFF Research Database (Denmark)

    Lindegaard, Marie L; Wassif, Christopher A; Vaisman, Boris

    2008-01-01

    Patients with Smith-Lemli-Opitz syndrome (SLOS) are born with multiple congenital abnormalities. Postnatal cholesterol supplementation is provided; however, it cannot correct developmental malformations due to in utero cholesterol deficit. Increased transport of cholesterol from maternal to fetal...... circulation might attenuate congenital malformations. The cholesterol transporters Abca1, Abcg1, and Sr-b1 are present in placenta; however, their potential role in placental transport remains undetermined. In mice, expression analyses showed that Abca1 and Abcg1 transcripts increased 2-3-fold between...... embryonic days 13.5 and 18.5 in placental tissue; whereas, Sr-b1 expression decreased. To examine the functional role of Abca1, Abcg1 and Sr-b1 we measured the maternal-fetal transfer of (14)C-cholesterol in corresponding mutant embryos. Disruption of either Abca1 or Sr-b1 decreased cholesterol transfer...

  4. Cholesterol metabolism in Huntington disease.

    Science.gov (United States)

    Karasinska, Joanna M; Hayden, Michael R

    2011-09-06

    The CNS is rich in cholesterol, which is essential for neuronal development and survival, synapse maturation, and optimal synaptic activity. Alterations in brain cholesterol homeostasis are linked to neurodegeneration. Studies have demonstrated that Huntington disease (HD), a progressive and fatal neurodegenerative disorder resulting from polyglutamine expansion in the huntingtin protein, is associated with changes in cellular cholesterol metabolism. Emerging evidence from human and animal studies indicates that attenuated brain sterol synthesis and accumulation of cholesterol in neuronal membranes represent two distinct mechanisms occurring in the presence of mutant huntingtin that influence neuronal survival. Increased knowledge of how changes in intraneuronal cholesterol metabolism influence the pathogenesis of HD will provide insights into the potential application of brain cholesterol regulation as a therapeutic strategy for this devastating disease.

  5. Cholesterol Embolism: An Overlooked Diagnosis

    Directory of Open Access Journals (Sweden)

    Sinem Nihal ESATOĞLU

    2012-01-01

    Full Text Available Acute renal failure following angiography is usually due to radiocontrast nephropathy; however, cholesterol embolism should be kept in mind when making the differential diagnosis. Cholesterol embolism is a multisystem disease, usually seen in elderly men who have severe atherosclerosis. In this case report, we describe a patient with cholesterol embolism who had a typical clinical history of progressive renal failure. We hope that this case report will emphasize the importance of this overlooked syndrome.

  6. Central giant cell granuloma of the mandibular condyle: Case-report

    OpenAIRE

    Munzenmayer,J; Tapia, P.; Zeballos,J; Martínez, A.; Compan,Á; Urra, A.; Spencer,ML

    2013-01-01

    This case report describes a 19-year-old female patient with a central giant cell granuloma in the left mandibular condyle, treated with en bloc resection and reconstruction with fibula graft. This occurrence is considered very unusual.

  7. Granuloma faciale: clinical, morphological and immunohistochemical aspects in a series of 10 patients*

    Science.gov (United States)

    Oliveira, Cristiano Claudino; Ianhez, Pedro Eugênio de Carvalho; Marques, Silvio Alencar; Marques, Mariângela Esther Alencar

    2016-01-01

    Granuloma faciale is a chronic, benign, cutaneous vasculitis with well-established clinical and morphological patterns, but with an unknown etiology. This study describes clinical and pathologic aspects of patients diagnosed with granuloma faciale. The authors analyzed demographic, clinical, morphological and immunohistochemical data from patients with a final diagnosis of granuloma faciale, confirmed between 1998 and 2012. There was a proportional and mixed inflammatory infiltrate, Grenz zones were present in almost all the samples. Immunophenotyping confirmed a higher intensity of T lymphocytes than B lymphocytes in thirteen samples, with a predominance of T CD8 lymphocytes in 64% of cases, in contrast to the literature, which indicates that the major component is T CD4 lymphocytes. All cases were positive for IgG4 but the majority (12/14) had less than 25% of stained cells. The pathogenesis of granuloma faciale remains poorly understood, making studies of morphological and immunohistochemical characterization important to better understand it. PMID:28099604

  8. Misery of neurosurgeon: Gauzoma causing foreign body granuloma-role of radiologist.

    Science.gov (United States)

    Kumar, Ravi; Nadarajah, Jeyaseelan; Kumar, Atin; Gamanagatti, Shivanand

    2016-01-01

    Materials used in neurosurgery to achieve hemostasis may be of resorbable or nonresorbable substance and may cause foreign body granuloma if left at the operative site. Foreign body granuloma depending on clinical history may be indistinguishable from an abscess, resolving infarction, and hematoma. Here we present two cases, who had decompressive craniectomy following road traffic accident. Follow-up computerized tomography (CT) scan revealed hyperdense lobulated lesion with peripheral rim enhancement. On magnetic resonance imaging (MRI), lesions were predominantly hypointense on T1-weighted images, and hyperintense on T2-weighted images and showed a lack of restricted diffusion. In view of recent craniectomy and imaging findings diagnosis of foreign body granuloma was made. Both patients underwent surgery, intraoperatively gauze pieces were retrieved from lesions which confirmed preoperative diagnosis. The combination of CT and MRI can diagnose foreign body granuloma, especially in trauma settings. Thus, we can help the surgeon by providing the probable diagnosis for proper management.

  9. Myeloid Growth Factors Promote Resistance to Mycobacterial Infection by Curtailing Granuloma Necrosis through Macrophage Replenishment.

    Science.gov (United States)

    Pagán, Antonio J; Yang, Chao-Tsung; Cameron, James; Swaim, Laura E; Ellett, Felix; Lieschke, Graham J; Ramakrishnan, Lalita

    2015-07-08

    The mycobacterial ESX-1 virulence locus accelerates macrophage recruitment to the forming tuberculous granuloma. Newly recruited macrophages phagocytose previously infected apoptotic macrophages to become new bacterial growth niches. Granuloma macrophages can then necrose, releasing mycobacteria into the extracellular milieu, which potentiates their growth even further. Using zebrafish with genetic or pharmacologically induced macrophage deficiencies, we find that global macrophage deficits increase susceptibility to mycobacterial infection by accelerating granuloma necrosis. This is because reduction in the macrophage supply below a critical threshold decreases granuloma macrophage replenishment to the point where apoptotic infected macrophages, failing to get engulfed, necrose. Reducing macrophage demand by removing bacterial ESX-1 offsets the susceptibility of macrophage deficits. Conversely, increasing macrophage supply in wild-type fish by overexpressing myeloid growth factors induces resistance by curtailing necrosis. These findings may explain the susceptibility of humans with mononuclear cytopenias to mycobacterial infections and highlight the therapeutic potential of myeloid growth factors in tuberculosis.

  10. The role of Hsp0, CD-8 and IFN-γ in immunopathobiogenesis of periapical granuloma in dental caries

    Directory of Open Access Journals (Sweden)

    Risya Cilmiaty

    2014-03-01

    Full Text Available Background: The incidence of dental caries with periapical granulomas in Indonesia is quite high. However, the mechanism of the formation of periapical granulomas in dental caries caused by bacterial infection in immunopathobiogenesis cannot be explained completely. Thus, this explanation is necessary in order to be used as a basis for diagnostic, preventive and therapeutic measures. Purpose: This research was aimed to determine the role of Hsp60, CD-8 and IFN-γ in immunopatobiogenesis of periapical granuloma in dental caries. Methods: This research was an analytic observational study with cross sectional approach. Samples of this research were 36 teeth of patients with dental caries, consisting of 18 caries teeth with periapical granulomas and 18 caries teeth without periapical granulomas. The variables observed in this research were Hsp60, CD-8 and IFN-γ. Measurements were conducted by using immunohistochemical methods on periapical tissue. Results: The mean of Hsp60, CD-8 and IFN-γ in granuloma group was significantly higher than those in non granuloma group (p<0.05. The positive role of IFN-γ on the incidence of granulomas appeared to be more prominent. Conclusion: The study suggested that in immunopathobiogenesis of periapical granuloma in dental caries, Hsp60, CD-8 and IFN-γ played important roles, but the role of IFN-γ was found to be more prominent.Latar belakang: Angka kejadian gigi karies dengan granuloma periapikal di Indonesia cukup tinggi, Namun mekanisme terbentuknya granuloma periapikal pada gigi karies yang disebabkan oleh infeksi bakteri secara imunopatobiogenesis belum dapat dijelaskan secara tuntas. Adanya penjelasan ini diperlukan agar dapat digunakan sebagai dasar pengembangan diagnosis, langkah preventif dan terapinya. Tujuan: Penelitian ini bertujuan untuk mengetahui peran Hsp60, CD-8 dan IFN-γ dalam immunopatobiogenesis dari granuloma periapikal karies gigi. Metode: Penelitian ini merupakan penelitian observasional

  11. Necrotising myometrial granulomas leading to postpartal hemorrhage: an extremely unusual presentation

    Directory of Open Access Journals (Sweden)

    Mansi Chandna

    2016-08-01

    Full Text Available Granulomas exclusively involving the myometrium are rare pathological finding and those presenting with atonic post-partum hemorrhage have never been reported. Here we present a case of myometrial granulomas presenting with atonic postpartum hemorrhage (PPH with no evidence of granulomatous inflammation elsewhere in the body. There was also no history of instrumentation or biopsy of the uterine cavity in the past. [Int J Reprod Contracept Obstet Gynecol 2016; 5(8.000: 2875-2877

  12. [Pyogenic granuloma vs. lobular capillary hemangioma. Histopathological analysis and epidemiology (Venezuela)].

    Science.gov (United States)

    Tinoco, P J; Sanalzar, N

    1989-01-01

    A review of the literature is done concerning Pyogenic Granuloma. From two hundred and thirty eight cases of our files. Twenty four cases are separated which are considered histopathologically different and to which the term Lobular Capillary Hemangioma is more applicable. Epidemiologic studies are analyzed and conclusions are established. Pyogenic Granuloma is more a reactive type of lesion of inflammatory nature, while Lobular Capillary Hemangioma separated as an entity is considered a lesion of benign neoplastic nature and vascular origin.

  13. Hacking into the granuloma: could antibody antibiotic conjugates be developed for TB?

    Science.gov (United States)

    Ekins, Sean

    2014-12-01

    Alternatives to small molecule or vaccine approaches to treating tuberculosis are rarely discussed. Attacking Mycobacterium tuberculosis in the granuloma represents a challenge. It is proposed that the conjugation of small molecules onto a monoclonal antibody that recognizes macrophage or lymphocytes cell surface receptors, might be a way to target the bacteria in the granuloma. This antibody drug conjugate approach is currently being used in 2 FDA approved targeted cancer therapies. The pros and cons of this proposal for further research are discussed.

  14. Food combinations for cholesterol lowering.

    Science.gov (United States)

    Harland, Janice I

    2012-12-01

    Reducing elevated LDL-cholesterol is a key public health challenge. There is substantial evidence from randomised controlled trials (RCT) that a number of foods and food components can significantly reduce LDL-cholesterol. Data from RCT have been reviewed to determine whether effects are additive when two or more of these components are consumed together. Typically components, such as plant stanols and sterols, soya protein, β-glucans and tree nuts, when consumed individually at their target rate, reduce LDL-cholesterol by 3-9 %. Improved dietary fat quality, achieved by replacing SFA with unsaturated fat, reduces LDL-cholesterol and can increase HDL-cholesterol, further improving blood lipid profile. It appears that the effect of combining these interventions is largely additive; however, compliance with multiple changes may reduce over time. Food combinations used in ten 'portfolio diet' studies have been reviewed. In clinical efficacy studies of about 1 month where all foods were provided, LDL-cholesterol is reduced by 22-30 %, whereas in community-based studies of >6 months' duration, where dietary advice is the basis of the intervention, reduction in LDL-cholesterol is about 15 %. Inclusion of MUFA into 'portfolio diets' increases HDL-cholesterol, in addition to LDL-cholesterol effects. Compliance with some of these dietary changes can be achieved more easily compared with others. By careful food component selection, appropriate to the individual, the effect of including only two components in the diet with good compliance could be a sustainable 10 % reduction in LDL-cholesterol; this is sufficient to make a substantial impact on cholesterol management and reduce the need for pharmaceutical intervention.

  15. Using Apex To Construct CPM-GOMS Models

    Science.gov (United States)

    John, Bonnie; Vera, Alonso; Matessa, Michael; Freed, Michael; Remington, Roger

    2006-01-01

    process for automatically generating computational models of human/computer interactions as well as graphical and textual representations of the models has been built on the conceptual foundation of a method known in the art as CPM-GOMS. This method is so named because it combines (1) the task decomposition of analysis according to an underlying method known in the art as the goals, operators, methods, and selection (GOMS) method with (2) a model of human resource usage at the level of cognitive, perceptual, and motor (CPM) operations. CPM-GOMS models have made accurate predictions about behaviors of skilled computer users in routine tasks, but heretofore, such models have been generated in a tedious, error-prone manual process. In the present process, CPM-GOMS models are generated automatically from a hierarchical task decomposition expressed by use of a computer program, known as Apex, designed previously to be used to model human behavior in complex, dynamic tasks. An inherent capability of Apex for scheduling of resources automates the difficult task of interleaving the cognitive, perceptual, and motor resources that underlie common task operators (e.g., move and click mouse). The user interface of Apex automatically generates Program Evaluation Review Technique (PERT) charts, which enable modelers to visualize the complex parallel behavior represented by a model. Because interleaving and the generation of displays to aid visualization are automated, it is now feasible to construct arbitrarily long sequences of behaviors. The process was tested by using Apex to create a CPM-GOMS model of a relatively simple human/computer-interaction task and comparing the time predictions of the model and measurements of the times taken by human users in performing the various steps of the task. The task was to withdraw $80 in cash from an automated teller machine (ATM). For the test, a Visual Basic mockup of an ATM was created, with a provision for input from (and measurement

  16. OPTIMIZATION STUDIES FOR THE ADVANCED PHOTOINJECTOR EXPERIMENT (APEX)

    Energy Technology Data Exchange (ETDEWEB)

    Lidia, S.M.

    2009-04-30

    The Advanced Photoinjector Experiment (APEX) seeks to validate the design of a proposed high-brightness, normal conducting RF photoinjector gun and bunching cavity feeding a superconducting RF linac to produce nC-scale electron bunches with sub-micron normalized emittances at MHz-scale repetition rates. The beamline design seeks to optimize the slice averaged 6D brightness of the beam prior to injection into a high gradient linac for further manipulation and delivery to an FEL undulator. Details of the proposed beamline layout and electron beam dynamics studies are presented.

  17. APEX sub-mm monitoring of gamma-ray blazars

    CERN Document Server

    Larsson, S; Weiss, A; Angelakis, E; Krichbaum, T P; Nestoras, I; Zensus, J A; Axelsson, M; Nilsson, D; Ryde, F; Hjalmarsdotter, L; Larsson, J; Lundgren, A; Mac-Auliffe, F; Parra, R; Siringo, G

    2012-01-01

    So far, no systematic long-term blazar monitoring programs and detailed variability studies exist at sub-mm wavelengths. Here, we present a new sub-mm blazar monitoring program using the APEX 12-m telescope. A sample of about 40 gamma-ray blazars has been monitored since 2007/2008 with the LABOCA bolometer camera at 345 GHz. First light curves, preliminary variability results and a first comparison with the longer cm/mm bands (F-GAMMA program) are presented, demonstrating the extreme variability characteristics of blazars at such short wavelengths.

  18. An in vivo comparative study of two apex locators.

    Science.gov (United States)

    Pallarés, A; Faus, V

    1994-12-01

    Two different electronic apex locators were used before extraction to determine working length in 116 root canals belonging to 34 molars. The results were then compared with postextraction working length measurements. The determinations were made before and after eliminating the canal contents and drying the interior. The results showed that 84.8% and 79.3% of the Odometer, and 89.6% and 88.7% of the Endocater readings for dry and nondry canals, respectively, occurred within the two 0.5-mm intervals closest to the apical constriction.

  19. Granuloma telangiectásico en cavidad oral: Reporte de un caso clínico Telangiecticum granuloma in oral cavity: Report of clinic case

    OpenAIRE

    A.J. Díaz Caballero; C.I. Vergara Hernández; M. Carmona Lorduy

    2009-01-01

    El granuloma telangiectásico es un tumor benigno que se presenta en cavidad oral, frecuentemente observado en la zona anterior de la cavidad oral y en encía, sangrante y de crecimiento rápido, asociado a la presencia de irritantes locales. Su tratamiento es la escisión quirúrgica, aunque puede presentar recidiva. Dentro de sus diagnósticos diferenciales encontramos el granuloma periférico de células gigantes, hemangioma capilar adquirido, carcinoma epidermoide exofítico, carcinoma metastásico...

  20. Triple antibiotic combination therapy may improve but not resolve granuloma annulare.

    Science.gov (United States)

    Simpson, Brenda; Foster, Shannon; Ku, Jennifer H; Simpson, Eric L; Ehst, Benjamin D

    2014-01-01

    Granuloma annulare is a fairly common entity yet lacks reliable treatment options especially when multiple lesions or dissemination exists. A recent case series suggests that a regimen of three oral antibiotics may prove to be an effective treatment. Our objective is to evaluate the efficacy of once monthly triple antibiotic therapy for granuloma annulare. We conducted an open-label prospective study of subjects with at least five lesions of granuloma annulare who received once monthly rifampin, ofloxacin, and minocycline for 6 months. Improvement was measured with a novel objective Granuloma Annulare Severity Index (GASI) scoring system. Twenty-one subjects enrolled. Ten subjects (48%) achieved at least a 50% reduction in their GASI, including three subjects (14%) who reached 75% improvement and one subject (5%) whose skin cleared. Six subjects (29%) had no change or worsening of their granuloma annulare. Median GASI scores decreased significantly by 15 points (p antibiotic use may improve but not clear granuloma annulare over 6 months. Randomized trials may be warranted to further assess this therapy.

  1. Macrophage and T cell dynamics during the development and disintegration of mycobacterial granulomas.

    Science.gov (United States)

    Egen, Jackson G; Rothfuchs, Antonio Gigliotti; Feng, Carl G; Winter, Nathalie; Sher, Alan; Germain, Ronald N

    2008-02-01

    Granulomas play a key role in host protection against mycobacterial pathogens, with their breakdown contributing to exacerbated disease. To better understand the initiation and maintenance of these structures, we employed both high-resolution multiplex static imaging and intravital multiphoton microscopy of Mycobacterium bovis BCG-induced liver granulomas. We found that Kupffer cells directly capture blood-borne bacteria and subsequently nucleate formation of a nascent granuloma by recruiting both uninfected liver-resident macrophages and blood-derived monocytes. Within the mature granuloma, these myeloid cell populations formed a relatively immobile cellular matrix that interacted with a highly dynamic effector T cell population. The efficient recruitment of these T cells was highly dependent on TNF-alpha-derived signals, which also maintained the granuloma structure through preferential effects on uninfected macrophage populations. By characterizing the migration of both innate and adaptive immune cells throughout the process of granuloma development, these studies provide a new perspective on the cellular events involved in mycobacterial containment and escape.

  2. Effect of chloroform, orange solvent and eucalyptol on the accuracy of four electronic apex locators.

    Science.gov (United States)

    Al-Hadlaq, Solaiman M

    2013-12-01

    The aim of this study was to evaluate the effect of three retreatment solutions on the accuracy of four electronic apex locators, the Root ZX mini, the Mini Apex Locator, the Root ZX and the Elements Diagnostic Unit and Apex Locator. Forty extracted single-rooted human teeth were used in this study. The four electronic apex locators were operated according to the manufacturer's instructions to locate the 'apical constriction' in the presence of chloroform, orange solvent or eucalyptol in the canal. The accuracy of each apex locator was not affected by the type of retreatment solution present in the root canal. In addition, the accuracy of the four apex locators was similar in the presence of each of the tested solutions.

  3. Petrous Apex Cephalocele: Report of Two Cases and Review of the Literature

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Bo Seong; Lee, Ghi Jai; Shim, Jae Chan; Leee, Jae Myeong; Nam, Mee Young; Kim, Ho Kyun [Dept. of Diagnostic Radiology, Seoul Paik Hospital, Injei University College of Medicine, Seoul (Korea, Republic of)

    2011-05-15

    A petrous apex cephalocele is a rare lesion of the petrous apex. It can be discovered incidentally or can cause a suite of clinical problems, such as trigeminal neuralgia or cerebrospinal fluid leakage. Although this lesion can be misinterpreted as a pathologic lesion, the characteristic radiologic features can provide the diagnostic clue for distinguishing these two lesions and avoid unnecessary treatment. Here we present CT and MRI finding of petrous apex cephalocele in two patients with review of the literature.

  4. Expression of CD 68, CD 45 and human leukocyte antigen-DR in central and peripheral giant cell granuloma, giant cell tumor of long bones, and tuberculous granuloma: An immunohistochemical study

    Directory of Open Access Journals (Sweden)

    Anoop Kumar

    2015-01-01

    Conclusion: CD 68 and CD 45 expression was found in central giant cell granuloma, peripheral giant cell granuloma and GCT, suggesting the origin from mononuclear phagocyte system and considering their clinical behavior of osteoclast type. High expressivity of HLA-DR in tuberculous granulomas which is an essential factor for presentation of the microbial antigen to CD 4 helper cells thus reassuring the fact that they are up-regulated in response to infection.

  5. Galaxy cluster scaling relations measured with APEX-SZ

    CERN Document Server

    Bender, A N; Ade, P A R; Basu, K; Bertoldi, F; Burkutean, S; Clarke, J; Dahlin, D; Dobbs, M; Ferrusca, D; Flanigan, D; Halverson, N W; Holzapfel, W L; Horellou, C; Johnson, B R; Kermish, Z D; Klein, M; Kneissl, R; Lanting, T; Lee, A T; Mehl, J; Menten, K M; Muders, D; Nagarajan, A; Pacaud, F; Reichardt, C L; Richards, P L; Schaaf, R; Schwan, D; Sommer, M W; Spieler, H; Tucker, C; Westbrook, B

    2014-01-01

    We present thermal Sunyaev-Zel'dovich effect (SZE) measurements for 42 galaxy clusters observed at 150 GHz with the APEX-SZ experiment. For each cluster, we model the pressure profile and calculate the integrated Comptonization $Y$ to estimate the total thermal energy of the intracluster medium (ICM). We compare the measured $Y$ values to X-ray observables of the ICM from the literature (cluster gas mass $M_{gas}$, temperature $T_X$, and $Y_X =M_{gas}T_X$) that relate to total cluster mass. We measure power law scaling relations, including an intrinsic scatter, between the SZE and X-ray observables for both the X-ray selected and uniform REFLEX-DXL cluster sample and the full ad hoc APEX-SZ sample. We observe that the lack of uniform X-ray analysis for the full cluster sample introduces significant variability into the measured scaling relations and dominates the level of intrinsic scatter. For the REFLEX-DXL sample, we find results consistent with a self-similar model of cluster evolution dominated by gravit...

  6. Orbital apex injury: trauma at the junction between the face and the cranium

    Energy Technology Data Exchange (ETDEWEB)

    Linnau, Ken F.; Hallam, Danial K.; Lomoschitz, Friedrich M.; Mann, F.A. E-mail: famann@u.washington.edu

    2003-10-01

    Orbital apex injury is usually seen in multiply and severely injured patients who are subject to high-energy trauma. Orbital apex injury rarely occurs in isolation. By proximity, the face, the skull base, or their combination are the most likely regions to be injured in association with orbital apex trauma. The vast majority of these injuries occur as an extension of orbital, LeFort, naso-orbito-ethmoid, panfacial, sphenoid, or temporal bone fractures of the skull. Complex osseous anatomic structures with intimately related multiple neurovascular organs make injuries to the orbital apex diagnostically and therapeutically challenging. Often other facial fractures extend into the orbital apex, or the orbital apex is damaged in conjunction with fractures of the skull base. Therefore abnormal imaging findings within the orbital apex may be indicators of traumatic injury to the entire junctional zone of face and cranium. In this article, we will give an overview of normal CT anatomy, review clinical syndromes, which may indicate traumatic injury of the orbital apex and present an imaging strategy for evaluation of the orbital apex.

  7. Top Five Lifestyle Changes to Reduce Cholesterol

    Science.gov (United States)

    Top 5 lifestyle changes to improve your cholesterol Lifestyle changes can help reduce cholesterol, keep you off cholesterol-lowering medications or enhance the effect of your medications. Here are five lifestyle ...

  8. Understand Your Risk for High Cholesterol

    Science.gov (United States)

    ... Aortic Aneurysm More Understand Your Risk for High Cholesterol Updated:Apr 1,2016 LDL (bad) cholesterol is ... content was last reviewed on 04/21/2014. Cholesterol Guidelines: Putting the pieces together Myth vs. Truth – ...

  9. How Is High Blood Cholesterol Treated?

    Science.gov (United States)

    ... the NHLBI on Twitter. How Is High Blood Cholesterol Treated? High blood cholesterol is treated with lifestyle ... need to follow a heart healthy diet . Lowering Cholesterol Using Therapeutic Lifestyle Changes TLC is a set ...

  10. Adipophilin expression in necrobiosis lipoidica, granuloma annulare, and sarcoidosis.

    Science.gov (United States)

    Schulman, Joshua M; LeBoit, Philip E

    2015-03-01

    Necrobiosis lipoidica (NL), granuloma annulare (GA), and sarcoidosis usually are distinguished by clinical presentation and routine microscopy, but their distinction can sometimes be challenging. Historically, a clue to diagnosing NL or GA has been the identification of lipid droplets in the areas of altered collagen, but such studies have required fresh frozen tissue, making them impractical. Here, we present the first report of immunohistochemical staining to detect adipophilin, a membrane protein in lipid droplets, in NL (n = 12), GA (n = 19), sarcoidosis (n = 12), and, as a control for nonspecific tissue damage, nongranulomatous cutaneous necrosis (n = 13). Four patterns of labeling were identified: (1) extracellular, within zones of altered collagen; (2) both intracellular and extracellular, after the distribution of palisaded or scattered histiocytes; (3) intracellular, within clustered histiocytes; and (4) periadnexal. All cases of NL demonstrated pattern 1; nearly all cases of GA (18/19) demonstrated pattern 2; most sarcoidosis (10/12) demonstrated pattern 3; and nongranulomatous necrosis demonstrated either pattern 4 (6/13) or did not stain (6/13), confirming that the antibody to adipophilin did not adhere nonspecifically to the damaged tissue. An additional set of 3 biopsies with overlapping or partially sampled features of NL, GA, and/or sarcoidosis subsequently confirmed the potential utility of adipophilin staining in diagnostically challenging cases. We conclude that the pattern of adipophilin expression is a useful adjunct in the evaluation of granulomatous dermatitis.

  11. Traumatic ulcerative granuloma with stromal eosinophilia - Mystery of pathogenesis revisited.

    Science.gov (United States)

    Sarangarajan, R; Vaishnavi Vedam, V K; Sivadas, G; Sarangarajan, Anuradha; Meera, S

    2015-08-01

    Oral ulcers are a common symptom in clinical practice. Among various causative factors, different types of ulcers in oral cavity exist. Among this, traumatic ulcerative granuloma with stromal eosinophilia (TUGSE) appears to be quite neglected by the clinicians due to the limited knowledge and awareness. On reviewing with a detailed approach to titles and abstracts of articles eliminating duplicates, 40 relevant articles were considered. Randomized studies, review articles, case reports and abstracts were included while conference papers and posters were excluded. Of importance, TUGSE cases been reported only to a minimal extent in the literature. Lack of its awareness tends to lead clinicians to a misconception of cancer. Thus, this particular lesion needs to be differentiated from other malignant lesions to provide a proper mode of treatment. The present article reviews various aspects of the TUGSE with emphasis on the clinical manifestation, pathogenesis, histological, and immunohistochemical study. This study provides the clinician contemporaries, a humble expansion to their knowledge of the disease, based on the searched literature, enabling a more comprehensive management of this rare occurrence.

  12. Radiological and epidemiological aspects of central giant cell granuloma

    Energy Technology Data Exchange (ETDEWEB)

    Noleto, Jose Wilson [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Faculdade de Medicina. Dept. de Radiologia]. E-mail: wilsonnoleto@ig.com.br; Marchiori, Edson [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil). Faculdade de Medicina. Dept. de Radiologia; Sampaio, Renato Kobler [Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ (Brazil). Faculdade de Medicina; Irion, Klaus L. [Liverpool NHS Trust, Liverpool (United Kingdom). Cardiothoracic Centre; Collares, Felipe Birchal [Harvard Medical School, Boston, MA (United States). Beth Israel Deaconess Medical Center (BIDMC)

    2007-05-15

    Objective: The present study was aimed at evaluating main radiological and epidemiological aspects of giant cell lesions (central giant cell granuloma and brown tumors of hyperparathyroidism). Materials and methods: The sample consisted of 26 giant cell lesions diagnosed in 22 patients divided into two groups, one of them including 17 patients who were not affected by hyperparathyroidism (group A) and another including five patients with such a disorder (group B). Results: Prevalence was higher in female patients (72.7%). Most frequently, lesions occurred more in the second decade of life (mean age, 27 years). The mandible arc was most frequently involved (61.5%). Radiographically, 57.7% of lesions were multilocular and 42.3% were unilocular with defined limits. All of the 26 lesions caused expansion of bone, 15.4% radicular resorption, 50% dental displacement, and 11.5% produced pain. In the mandible 18.7% of the lesions crossed the midline. Group A showed 66.7% of lesions in the mandible and group B showed an even distribution of lesions between arches. In group A 66.7% of lesions were multilocular, and 33.3% unilocular; in group B 62.5% were unilocular, and 37.5% multilocular. Conclusion: Giant cells lesions may present themselves with a wide spectrum, from small, slow-growing unilocular lesions to extensive multilocular lesions. They present features of benignity, though some lesions may demonstrate a locally aggressive behavior. (author)

  13. Pyogenic granuloma on the upper lip: an unusual location

    Directory of Open Access Journals (Sweden)

    Eduardo Sanches Gonçales

    2010-10-01

    Full Text Available Pyogenic granuloma (PG is a benign non-neoplastic mucocutaneous lesion. It is a reactional response to constant minor trauma and might be related to hormonal changes. In the mouth, PG is manifested as a sessile or pedunculated, resilient, erythematous, exophytic and painful papule or nodule with a smooth or lobulated surface that bleeds easily. PG preferentially affects the gingiva, but may also occur on the lips, tongue, oral mucosa and palate. The most common treatment is surgical excision. This paper describes a mucocutaneous PG on the upper lip, analyzing the clinical characteristics and discussing the features that distinguish this lesion from other similar oral mucosa lesions. The diagnosis of oral lesions is complex and leads the dentist to consider distinct lesions with different diagnostic methods. This case report with a 4 year-follow-up calls the attention to the uncommon mucocutaneous labial location of PG and to the fact that surgical excision is the safest method for diagnosis and treatment of PG of the lip, even when involving the mucosa and skin

  14. Granuloma eosinofílico de coluna cervical: relato de caso Eosinophilic granuloma of the cervical spine: case report

    Directory of Open Access Journals (Sweden)

    Manoel Baldoino Leal Filho

    2003-03-01

    Full Text Available Granuloma eosinofílico (GE é condição benigna de proliferação histiocitária localizada ou multifocal. A ocorrência de lesões na coluna cervical pode variar entre 1,5% e 20% dos casos de GE. Relatamos caso de menina de sete anos de idade e história de cervicalgia há cerca de um mês, torcicolo persistente e postura viciosa do pescoço, com desvio cefálico para esquerda. A tomografia computadorizada revelou lesão expansiva, osteodestrutiva ao nível da hemilâmina esquerda de C2, com invasão do canal raquiano e do plano muscular a este nível. A paciente foi submetida a laminectomia cervical com retirada da lesão com pós-operatório favorável, e melhora da sintomatologia. Foi feita quimioterapia com prednisona, vinblastina e etoposide. Após seis meses, o protocolo foi mantido e associado a metotrexate. A paciente segue sem recidiva há 36 meses.Eosinophilic granuloma (EG is a benign condition of histocytes proliferation localized or multifocal. It is presents in the cervical spine in 1.5%-20% of the cases of EG. We report the case of a seven-year-old girl that presented with a one month history of cervical pain, persistent wryneck and vicious posture of the neck. A computerized tomography was performed and confirmed the presence of spreading lesion, ostheodestructive to the level of the left laminae of C2, with invasion of the spine and the muscular tissue. A laminectomy was underwent for removal of the lesion. The patient had a good post-operative recovery with improvement of the symptoms. Chemotherapy with prednisone, vinblastine and ethoposide was administred. After six months, this protocol was repeated associaded to methotrexate.The patient improved and had no new symptoms in a follow-up of 36 months.

  15. Cholesterol metabolism and colon cancer.

    Science.gov (United States)

    Broitman, S A; Cerda, S; Wilkinson, J

    1993-01-01

    While epidemiologic and concordant experimental data indicate a direct relationship between dietary fat (and presumably caloric) intake and the development of colon cancer, the effect of dietary cholesterol on this disease is still not clear. However, there appears to be a developing literature concerning an inverse relationship between serum and plasma cholesterol levels, and the risk for colon cancer. Findings that low serum cholesterol levels are apparent as early as ten years prior to the detection of colon cancer implies that sub clinical disease is probably not involved initially in this process. The possibility of low serum cholesterol as a bio-marker was considered in epidemiologic studies which focused upon obese men with lower than normal serum cholesterol levels who were found to be at increased risk to colon cancer. While the relationship between low serum cholesterol and colonic or intestinal cholesterol metabolism is presently not understood, current genetic studies provide a promising though as yet unexplored potential association. Alterations which occur during the developmental progression of colonic cancer include changes in chromosome 5, which also carries two genes vital to the biosynthesis and regulation of systemic and cellular cholesterol metabolism, 3-hydroxy-3-methylglutaryl coenzyme A synthase, and 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCoA R). Regulation of cholesterol metabolism in intestinal cells in vivo and in vitro varies from that seen in normal fibroblasts or hepatocytes in terms of exogenous sources of cholesterol and how these sources regulate internal synthesis. Colonic cancer cells have been used to assess small bowel enterocyte cholesterol metabolism, which has been possible because of their ability to differentiate in culture, however information regarding true colonic enterocyte cholesterol metabolism is relatively scarce. Colonic cancer cells have been shown to possess a diminished or nonexistent ability to use

  16. Infiltrated papules on the trunk and headaches: A case of actinic granuloma and a review of the literature

    Directory of Open Access Journals (Sweden)

    Sonal A. Parikh, BS

    2015-08-01

    Full Text Available Actinic granuloma is a rare granulomatous reaction that is more commonly seen in females and thought to occur as an autoimmune response to actinic damage of elastic tissue. We discuss a case of a patient with actinic granuloma presenting with concomitant temporal arteritis. Our case and review of the literature emphasize the association between actinic granuloma and temporal arteritis, a serious inflammatory condition that could lead to blindness if misdiagnosed.

  17. [Teflon granuloma after microvascular decompression of the trigeminal nerve root in a patient with recurrent trigeminal neuralgia].

    Science.gov (United States)

    Rzaev, D A; Kulikova, E V; Moysak, G I; Voronina, E I; Ageeva, T A

    2016-01-01

    The use of a Teflon implant for Jannetta surgery in patients with trigeminal neuralgia is complicated in rare cases by the development of a Teflon granuloma and can cause recurrent facial pain. The article presents a clinical case of a Teflon granuloma developed after microvascular decompression of the trigeminal nerve root, describes the surgical findings and histological picture, and analyzes the literature, causes of granuloma development, and recommendations for treatment of these patients.

  18. Trichophyton tonsurans associated tinea corporis infection with the development of Majocchi's granuloma in a renal transplant patient.

    Science.gov (United States)

    Rajpara, Vidya; Frankel, Stacy; Rogers, Cindy; Nouri, Keyvan

    2005-01-01

    Trichophyton tonsurans is an uncommon cause of tinea corporis, and an even more uncommon cause of Majocchi's granuloma. We report a patient who developed tinea corporis with Majocchi's granuloma from T. tonsurans infection. Immunocompromised hosts are predisposed to develop cutaneous fungal infections, as was the case with this patient. Majocchi's granuloma is a rare complication with immunosuppression, but is significant to consider when a fungal infection is suspected because it may require more aggressive therapy.

  19. Mediastinal histoplasmosis: report of the first two Brazilian cases of mediastinal granuloma Histoplasmose mediastinal: relato dos dois primeiros casos brasileiros de granuloma mediastinal

    Directory of Open Access Journals (Sweden)

    Luiz Carlos Severo

    2005-04-01

    Full Text Available This report documents the first two Brazilian cases of mediastinal granuloma due to histoplasmosis, presenting selected aspects on the diagnosis. Tissue samples revealing histoplasmosis were obtained from each of the patients by mediastinoscopy and thoracotomy. In the second patient, a subcarinal calcified mass eroded into the bronchial tree, leading to secondary bilateral aspiration pneumonitis one week after thoracotomy. Although rare, histoplasmosis should be included in the differential diagnosis of mediastinal granuloma, specially if there are calcifications greater than 10 mm in dimension.São relatados os dois primeiros casos de granuloma mediastinal por histoplasmose no Brasil, apresentando aspectos selecionados sobre dignóstico. O diagnóstico tecidual de histoplasmose foi obtido por mediastinoscopia e toracotomia, respectivamente. Em um paciente a massa calcificada subcarinal erodiu na árvore brônquica com pneumonite de aspiração bilateral uma semana após a toracotomia. Embora rara, histoplasmose deve ser incluída no diagnóstico diferencial de granuloma mediastinal especialmente com calcificação maior do que 10 mm de diâmetro.

  20. Oral Pyogenic Granuloma Associated With a Dental Implant Treated With an Er:YAG Laser: A Case Report.

    Science.gov (United States)

    Kaya, Alper; Ugurlu, Faysal; Basel, Bilal; Sener, Cem B

    2015-12-01

    A pyogenic granuloma is a tumorlike proliferation that occurs slightly more often in females, frequently involving the gingiva in the maxillary region. Clinically, it presents as a sessile or pedunculated exophytic mass with a smooth or lobulated surface, which tends to bleed easily. Its color can range from pink to dark red. The most common treatment is surgical excision. This case report presents a pyogenic granuloma that formed around an implant 7 years after its insertion. Pyogenic granulomas associated with dental implants are extremely rare; this is the fourth reported case and the first case of pyogenic granuloma to be treated with an Er:YAG laser.

  1. Shoot Apex Demand Determines Assimilate and Nutrients Partitioning and Nutrient-uptake Rate in Tobacco Plants

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Our previous experiment revealed that apex-removed plants have larger root systems but a lower K+-uptake rates than intact tobacco plants.Since the apex is not only e center of growth and metabolism,but also an important place of auxin synthesis and export,the aims of this study were to distinguish whether the apex demand or auxin synthesized in the apex regulates assimilate and nutrients partitioning within plant,and to explain the reason for the lower K+-uptake rate of the apex-ramoved plant.In comparison with the control plant,covering the shoot apex with a black transparent plastic bag reduced net increases In dry matter and nutrients;however,the distribution of the dry matter and nutrients between shoot and roots and nutrient-uptake rates were not changed.Removal of the shoot apex shifted the dry mass and nutrients distributions to roots,and reduced the rate of nutrient uptake.Application of 1-naphthylacetic acid(NAA) could partly replace the role of the removed apex,stimulated assimilate and nutrient deposition into the treated tissue,and enhanced the reduced plasma membrane ATPase activity of roots to the control level.However,treatment of the apex-removed plants with NAA could not rescue the reduced nutrient uptake rate and the shifted assimilates and nutrients partitioning caused by excision of the apex.Higher nutrient uptake rate of the intact plants could not be explained by root growth parameters,such as total root surface area and number of root tips.The results from the present study indicate that strong apex demand determined assimilatas and nutrients partitioning and nutrient-uptake rate in tobacco(Nicotiana tabacum)plants.

  2. Gain and frequency tuning within the mouse cochlear apex

    Energy Technology Data Exchange (ETDEWEB)

    Oghalai, John S.; Raphael, Patrick D. [Department of Otolaryngology, Stanford University School of Medicine, Stanford, California (United States); Gao, Simon [Department of Otolaryngology, Stanford University School of Medicine, Stanford, California (United States); Department of Bioengineering, Rice University, Houston, Texas (United States); Lee, Hee Yoon [Department of Otolaryngology, Stanford University School of Medicine, Stanford, California (United States); Department of Electrical Engineering, Stanford University, Stanford, California (United States); Groves, Andrew K. [Department of Neuroscience, Department of Molecular and Human Genetics, and Program in Developmental Biology, Baylor College of Medicine, Houston, Texas (United States); Zuo, Jian [Department of Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, Tennessee (United States); Applegate, Brian E. [Department of Biomedical Engineering, Texas A& M University, College Station, Texas (United States)

    2015-12-31

    Normal mammalian hearing requires cochlear outer hair cell active processes that amplify the traveling wave with high gain and sharp tuning, termed cochlear amplification. We have used optical coherence tomography to study cochlear amplification within the apical turn of the mouse cochlea. We measured not only classical basilar membrane vibratory tuning curves but also vibratory responses from the rest of the tissues that compose the organ of Corti. Basilar membrane tuning was sharp in live mice and broad in dead mice, whereas other regions of the organ of Corti demonstrated phase shifts consistent with additional filtering beyond that provided by basilar membrane mechanics. We use these experimental data to support a conceptual framework of how cochlear amplification is tuned within the mouse cochlear apex. We will also study transgenic mice with targeted mutations that affect different biomechanical aspects of the organ of Corti in an effort to localize the underlying processes that produce this additional filtering.

  3. Low altitude dose measurements from APEX, CRRES and DMSP.

    Science.gov (United States)

    Mullen, E G; Gussenhoven, M S; Bell, J T; Madden, D; Holeman, E; Delorey, D

    1998-01-01

    Dosimeter data taken on the APEX (1994-1996), CRRES (1990-1991) and DMSP (1984-1987) satellites have been used to study the low altitude (down to 350 km) radiation environment. Of special concern has been the inner edge of the inner radiation belt due to its steep gradient. We have constructed dose models of the inner edge of the belt from all three spacecraft and put them into a personal computer utility, called APEXRAD, that calculates dose for user-selected orbits. The variation of dose for low altitude, circular orbits is given as a function of altitude, inclination and particle type. Dose-depth curves show that shielding greater than approximately 1/4 in Al is largely ineffectual for low altitude orbits. The contribution of outer zone electrons to low altitude dose is shown to be important only for thin shields and to have significant variation with magnetic activity and solar cycle.

  4. Formation of cholesterol bilayer domains precedes formation of cholesterol crystals in cholesterol/dimyristoylphosphatidylcholine membranes: EPR and DSC studies.

    Science.gov (United States)

    Mainali, Laxman; Raguz, Marija; Subczynski, Witold K

    2013-08-01

    Saturation-recovery EPR along with DSC were used to determine the cholesterol content at which pure cholesterol bilayer domains (CBDs) and cholesterol crystals begin to form in dimyristoylphosphatidylcholine (DMPC) membranes. To preserve compositional homogeneity throughout the membrane suspension, lipid multilamellar dispersions were prepared using a rapid solvent exchange method. The cholesterol content increased from 0 to 75 mol %. With spin-labeled cholesterol analogues, it was shown that the CBDs begin to form at ~50 mol % cholesterol. It was confirmed by DSC that the cholesterol solubility threshold for DMPC membranes is detected at ~66 mol % cholesterol. At levels above this cholesterol content, monohydrate cholesterol crystals start to form. The major finding is that the formation of CBDs precedes formation of cholesterol crystals. The region of the phase diagram for cholesterol contents between 50 and 66 mol % is described as a structured one-phase region in which CBDs have to be supported by the surrounding DMPC bilayer saturated with cholesterol. Thus, the phase boundary located at 66 mol % cholesterol separates the structured one-phase region (liquid-ordered phase of DMPC with CBDs) from the two-phase region where the structured liquid-ordered phase of DMPC coexists with cholesterol crystals. It is likely that CBDs are precursors of monohydrate cholesterol crystals.

  5. Cholesterol testing on a smartphone.

    Science.gov (United States)

    Oncescu, Vlad; Mancuso, Matthew; Erickson, David

    2014-02-21

    Home self-diagnostic tools for blood cholesterol monitoring have been around for over a decade but their widespread adoption has been limited by the relatively high cost of acquiring a quantitative test-strip reader, complicated procedure for operating the device, and inability to easily store and process results. To address this we have developed a smartphone accessory and software application that allows for the quantification of cholesterol levels in blood. Through a series of human trials we demonstrate that the system can accurately quantify total cholesterol levels in blood within 60 s by imaging standard test strips. In addition, we demonstrate how our accessory is optimized to improve measurement sensitivity and reproducibility across different individual smartphones. With the widespread adoption of smartphones and increasingly sophisticated image processing technology, accessories such as the one presented here will allow cholesterol monitoring to become more accurate and widespread, greatly improving preventive care for cardiovascular disease.

  6. Americans' Cholesterol Levels Keep Falling

    Science.gov (United States)

    ... and 2013-2014, the CDC reported. Dr. David Friedman is chief of heart failure services at Long ... for cholesterol treatment, all seem to be working," Friedman said. The study was published online Nov. 30 ...

  7. Pulmonary hyalinizing granuloma%肺玻璃样变肉芽肿病

    Institute of Scientific and Technical Information of China (English)

    Zhao-lin XU; Drew BETHUNE; Daria MANOS; Annette FOYLE; Harry HENTELEFF; Michael JOHNS-TON; Yannick CARTIER

    2009-01-01

    Objective:To present clinical and pathologic features of pulmonary hyalnizing granuloma through analyzing three cases found in our institution and reviewing cases reported in the English language literature. Methods and Results: Three eases of pulmonary hyalnizing granuloma identified at our institu-tion during the past ten years were reviewed. In the first case, the patient presented with concurrent pulmonary hyalinizing granuloma and histoplasmosis. In the second case, the patient presented with a 5.5 cm lung mass and a separate smaller lesion radiologically resembling bronchogenic carcinoma. There was very prominent polyclonal lymphocytic proliferation at the periphery especially of the smaller lesion likely representing an early stage of the disease process. In the third case, the patient presented with multiple subpleural plaque-like lesions in addition to nodular lesions of the lung. All cases also demonstrated various degrees of lymphocytic infiltration within the lesions. The English literature has been reviewed through searching the PubMed. Conclusion: Since patients with pulmonary hyalinizing granuloma demonstrated a spectrum of clinical presentations, radiologic changes and histologic features with a variety of associated clinical disorders, pulmonary hyalnizing granuloma is more in keeping with a clinicopathologic entity rather than a specific pathologic disease.

  8. Indirect Effects of Oral Tolerance Inhibit Pulmonary Granulomas to Schistosoma mansoni Eggs

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    Geraldo Magela Azevedo

    2012-01-01

    Full Text Available Parenteral injection of tolerated proteins into orally tolerant mice inhibits the initiation of immunological responses to unrelated proteins and blocks severe chronic inflammatory reactions of immunological origin, such as autoimmune reactions. This inhibitory effect which we have called “indirect effects of oral tolerance” is also known as “bystander suppression.” Herein, we show that i.p. injection of OVA + Al(OH3 minutes before i.v. injection of Schistosoma mansoni eggs into OVA tolerant mice blocked the increase of pulmonary granulomas. In addition, the expression of ICAM-1 in lung parenchyma in areas outside the granulomas of OVA-orally tolerant mice was significantly reduced. However, at day 18 after granuloma induction there was no difference in immunofluorescency intensity to CD3, CD4, F4/80, andα-SMA per granuloma area of tolerant and control groups. Reduction of granulomas by reexposure to orally tolerated proteins was not correlated with a shift in Th-1/Th-2 cytokines in serum or lung tissue extract.

  9. Analysis of Preoperative Detection for Apex Prostate Cancer by Transrectal Biopsy

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    Tomokazu Sazuka

    2013-01-01

    Full Text Available Background. The aim of this study was to determine concordance rates for prostatectomy specimens and transrectal needle biopsy samples in various areas of the prostate in order to assess diagnostic accuracy of the transrectal biopsy approach, especially for presurgical detection of cancer in the prostatic apex. Materials and Methods. From 2006 to 2011, 158 patients whose radical prostatectomy specimens had been evaluated were retrospectively enrolled in this study. Concordance rates for histopathology results of prostatectomy specimens and needle biopsy samples were evaluated in 8 prostatic sections (apex, middle, base, and transitional zones bilaterally from 73 patients diagnosed at this institution, besides factors for detecting apex cancer in total 118 true positive and false negative apex cancers. Results. Prostate cancer was found most frequently (85% in the apex of all patients. Of 584 histopathology sections, 153 (49% from all areas were false negatives, as were 45% of apex biopsy samples. No readily available preoperative factors for detecting apex cancer were identified. Conclusions. In Japanese patients, the most frequent location of prostate cancer is in the apex. There is a high false negative rate for transrectal biopsy samples. To improve the detection rate, transperitoneal biopsy or more accurate imaging technology is needed.

  10. APEX simulation: environmental benefits of agroforestry and grass buffers on corn-soybean watersheds

    Science.gov (United States)

    The Agricultural Policy Environmental Extender (APEX) model has the ability to simulate the effects of vegetative filter strips on runoff and pollutant loadings from agricultural watersheds. The objectives of this study were to calibrate and validate the APEX model for three adjacent watersheds and...

  11. 75 FR 82335 - Airworthiness Directives; APEX Aircraft Model CAP 10 Airplanes

    Science.gov (United States)

    2010-12-30

    ... identified in this proposed AD, contact Apex Aircraft, Bureau de Navigabilit , 1 route de Troyes, 21121... route de Troyes, 21121 DAROIS- France, telephone: (33) 380 35 65 10; fax: (33) 380 35 65 15; email: apex... rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3....

  12. Relation of Gothic arch apex to dentist-assisted centric relation.

    Science.gov (United States)

    Myers, M; Dziejma, R; Goldberg, J; Ross, R; Sharry, J

    1980-07-01

    These data suggest that the widely held belief that thumb pressure can position the mandible consistently more posterior than the position indicated by the Gothic arch apex is unfounded. Furthermore, this study provides no evidence to support the contention that the dentist-assisted jaw relation is more reproducible than the relation indicated by the Gothic arch apex.

  13. 76 FR 13663 - Cooper Tools, Currently Known as Apex Tool Group, LLC, Hicksville, OH; Amended Certification...

    Science.gov (United States)

    2011-03-14

    ... Employment and Training Administration Cooper Tools, Currently Known as Apex Tool Group, LLC, Hicksville, OH..., applicable to workers of Cooper Tools, Hicksville, Ohio. The workers are engaged in activities related to the... information shows that in July, 2010, Apex Tool Group, LLC. purchased Cooper Tools and is currently known...

  14. Cholesterol Worships a New Idol

    Institute of Scientific and Technical Information of China (English)

    Ira G. Schulman

    2009-01-01

    The growing worldwide epidemic of cardiovascular disease suggests that new therapeutic strategies are needed to complement statins in the lowering of cholesterol levels. In a recent paper in Science, Tontonoz and colleagues have identified Idol as a protein that can control cholesterol levels by regulating the stability of the low-density lipoprotein receptor; inhibiting the activity of Idol could provide novel approaches for the treatment of cardiovascular disease.

  15. Cholesterol and benign prostate disease.

    Science.gov (United States)

    Freeman, Michael R; Solomon, Keith R

    2011-01-01

    The origins of benign prostatic diseases, such as benign prostatic hyperplasia (BPH) and chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS), are poorly understood. Patients suffering from benign prostatic symptoms report a substantially reduced quality of life, and the relationship between benign prostate conditions and prostate cancer is uncertain. Epidemiologic data for BPH and CP/CPPS are limited, however an apparent association between BPH symptoms and cardiovascular disease (CVD) has been consistently reported. The prostate synthesizes and stores large amounts of cholesterol and prostate tissues may be particularly sensitive to perturbations in cholesterol metabolism. Hypercholesterolemia, a major risk factor for CVD, is also a risk factor for BPH. Animal model and clinical trial findings suggest that agents that inhibit cholesterol absorption from the intestine, such as the class of compounds known as polyene macrolides, can reduce prostate gland size and improve lower urinary tract symptoms (LUTS). Observational studies indicate that cholesterol-lowering drugs reduce the risk of aggressive prostate cancer, while prostate cancer cell growth and survival pathways depend in part on cholesterol-sensitive biochemical mechanisms. Here we review the evidence that cholesterol metabolism plays a role in the incidence of benign prostate disease and we highlight possible therapeutic approaches based on this concept.

  16. Steroidal Triterpenes of Cholesterol Synthesis

    Directory of Open Access Journals (Sweden)

    Damjana Rozman

    2013-04-01

    Full Text Available Cholesterol synthesis is a ubiquitous and housekeeping metabolic pathway that leads to cholesterol, an essential structural component of mammalian cell membranes, required for proper membrane permeability and fluidity. The last part of the pathway involves steroidal triterpenes with cholestane ring structures. It starts by conversion of acyclic squalene into lanosterol, the first sterol intermediate of the pathway, followed by production of 20 structurally very similar steroidal triterpene molecules in over 11 complex enzyme reactions. Due to the structural similarities of sterol intermediates and the broad substrate specificity of the enzymes involved (especially sterol-Δ24-reductase; DHCR24 the exact sequence of the reactions between lanosterol and cholesterol remains undefined. This article reviews all hitherto known structures of post-squalene steroidal triterpenes of cholesterol synthesis, their biological roles and the enzymes responsible for their synthesis. Furthermore, it summarises kinetic parameters of enzymes (Vmax and Km and sterol intermediate concentrations from various tissues. Due to the complexity of the post-squalene cholesterol synthesis pathway, future studies will require a comprehensive meta-analysis of the pathway to elucidate the exact reaction sequence in different tissues, physiological or disease conditions. A major reason for the standstill of detailed late cholesterol synthesis research was the lack of several steroidal triterpene standards. We aid to this efforts by summarizing commercial and laboratory standards, referring also to chemical syntheses of meiosis-activating sterols.

  17. Hepatic granulomas in canine visceral leishmaniasis and clinical status Granulomas hepáticos na leishmaniose visceral canina e classificação clínica

    Directory of Open Access Journals (Sweden)

    J.A.P. Sant’Ana

    2007-10-01

    Full Text Available The histopathological description of intralobular hepatic granulomas in animals with a defined clinical status (asymptomatic, oligosymptomatic and symptomatic animals was reported. Seventy-one mongrel dogs naturally infected with Leishmania chagasi were obtained from two Brazilian endemic areas: João Pessoa, PB and Belo Horizonte, MG. The hepatic parasite load was determined and compared to granuloma formation. Liver fragments from all infected animals showed remarkable leishmaniotic granulomatous inflammatory reaction. Granulomas with variable size were constituted by macrophages (parasitized or not with amastigotes of L. chagasi, some epithelioid cells, small numbers of lymphocytes, plasma cells, and rare neutrophils. Asymptomatic dogs had higher numbers of granulomas than oligosymptomatic and symptomatic animals from both geographical regions. However, the average diametric size of granulomas was very heterogeneous in all groups, independently of the geographic region (P>0.05. Parasite tissue load did not show any difference among liver fragments of all animals, especially when considering the defined clinical status and/or their geographic origin.Descreve-se a formação de granulomas hepáticos na leishmaniose canina em animais com classificação clínica definida - assintomáticos, oligossintomáticos e sintomáticos. Setenta e um animais, sem raça definida e naturalmente infectados com Leishmania chagasi, foram obtidos de duas regiões endêmicas brasileiras: João Pessoa, PB e Belo Horizonte, MG. A carga parasitária tecidual foi determinada mediante emprego do Leishmania Donovani Units (LDU e comparada com a formação de granulomas hepáticos. Fragmentos de fígado de todos os animais infectados mostraram reação granulomatosa notadamente leishmaniótica. Granulomas de variáveis tamanhos eram constituídos por macrófagos, parasitados ou não com formas amastigotas de L. chagasi, algumas células epitelióides, pequeno número de

  18. Niacin to Boost Your HDL "Good" Cholesterol

    Science.gov (United States)

    Niacin can boost 'good' cholesterol Niacin is a B vitamin that may raise your HDL ("good") cholesterol. But side effects might outweigh benefits for most ... been used to increase high-density lipoprotein (HDL) cholesterol — the "good" cholesterol that helps remove low-density ...

  19. Granuloma telangiectásico en cavidad oral: Reporte de un caso clínico Telangiecticum granuloma in oral cavity: Report of clinic case

    Directory of Open Access Journals (Sweden)

    A.J. Díaz Caballero

    2009-06-01

    Full Text Available El granuloma telangiectásico es un tumor benigno que se presenta en cavidad oral, frecuentemente observado en la zona anterior de la cavidad oral y en encía, sangrante y de crecimiento rápido, asociado a la presencia de irritantes locales. Su tratamiento es la escisión quirúrgica, aunque puede presentar recidiva. Dentro de sus diagnósticos diferenciales encontramos el granuloma periférico de células gigantes, hemangioma capilar adquirido, carcinoma epidermoide exofítico, carcinoma metastásico, sarcoma de Kaposi, fibroma periférico, tumores mesenquimales benignos y malignos. Se presenta caso clínico de paciente femenino de 52 años de edad que acudió a consulta odontológica en la facultad de Odontología de la Universidad de Cartagena por presentar dos lesiones tumorales que sangraban con facilidad ubicadas en encía papilar y espacio edéntulo relacionadas a prótesis parcial fija de tres unidades entre órganos dentarios 11-13. Se le realizó la escisión quirúrgica de la lesión y se envió a patología donde se confirmó histopatológicamente diagnóstico de granuloma telangiectásico.Telangiecticum granuloma is a benign tumor that occurs in the oral cavity, often observed in the anterior section of the oral cavity and gums, it is bleeding and rapid growth, associated with the presence of local irritants. Its treatment is surgical excision, but may present recurrence. Inside we find the differential diagnosis of peripheral giant cell granuloma, capillary hemangioma acquired exophytic squamous cell carcinoma, metastatic carcinoma, Kaposi’s sarcoma, peripheral fibroma, benign and malignant mesenchymal tumors. In this paper is reported a case of female patient aged 52 who came to the Dental School of Dentistry of the University of Cartagena for filling 2 lesions that bled easily located in papillary gingiva and edentulous space fixed partial dentures related to three dental units between 11-13 bodies. Was performed surgical

  20. [A case of subglottic stenosis with bridging granuloma after intubation with double-lumen endotracheal tube].

    Science.gov (United States)

    Ito, Yosuke; Nakata, Yoko; Nakamura, Sakiko; Nagaya, Kei

    2013-08-01

    We present a case of subglottic stenosis with rare bridging granuloma after intubation with double-lumen endotracheal tube. An 81-year-old woman was diagnosed with the lung tumor and scheduled for the thoracoscopic surgery. We induced anesthesia with propofol, remifentanil and rocuronium. A 35 Fr double-lumen intratracheal tube was inserted to the trachea with some resistance, when the tube passed through the glottis. A few days later, she suffered from respiratory discomfort. An otolaryngologist examined her larynx and subglottis. Laryngoscopic examination revealed bridging granuloma leading to tracheal stenosis. Tracheostomy and resection of granuloma were performed, and her symptom improved. If we feel resistance in intubating a double-lumen endotracheal tube in a patient with a history of intubation with a tracheal tube, we should operate gently adjusting the size of the tracheal tube.

  1. O’Brien Actinic Granuloma: A Case Report and Brief Review of Literature

    Science.gov (United States)

    Coutinho, Inês D; Ramos, Leonor I C; Brites, Maria M; Tellechea, Oscar

    2015-01-01

    O’Brien first described the actinic granuloma in 1975, as an infrequent granulomatous disorder occurring in sun-exposed skin, with a slow but often self-limited course. Ever since its initial description, the actinic physiopathogenic hypothesis has been debated by many authors. We report a 60-year-old female rural worker that presented with a 14 × 7 cm annular lesion with erythematous elevated borders and an atrophic center on the right calf. The lesion was evolving for 2 years, and histopathology confirmed actinic granuloma. She started acitretin with halting of disease progression after 6 months of therapy. Our case can also be associated to actinic damage, despite its unusual location, therefore highlighting the role of solar elastosis in the development of O’Brien actinic granuloma. PMID:26288411

  2. O′Brien actinic granuloma: A case report and brief review of literature

    Directory of Open Access Journals (Sweden)

    Inês D Coutinho

    2015-01-01

    Full Text Available O′Brien first described the actinic granuloma in 1975, as an infrequent granulomatous disorder occurring in sun-exposed skin, with a slow but often self-limited course. Ever since its initial description, the actinic physiopathogenic hypothesis has been debated by many authors. We report a 60-year-old female rural worker that presented with a 14 × 7 cm annular lesion with erythematous elevated borders and an atrophic center on the right calf. The lesion was evolving for 2 years, and histopathology confirmed actinic granuloma. She started acitretin with halting of disease progression after 6 months of therapy. Our case can also be associated to actinic damage, despite its unusual location, therefore highlighting the role of solar elastosis in the development of O′Brien actinic granuloma.

  3. Granuloma anular asociado a linfoma no Hodgkim difuso de células B grandes

    Directory of Open Access Journals (Sweden)

    Liermis M. Dita Salabert

    2011-12-01

    Full Text Available Se presenta el caso de un paciente de 55 años con antecedentes de ser hipertenso controlado, atendido en servicio de hematología por adenopatías de características linfomatosas distribuidas en cadenas ganglionares, axilares, inguinales y epitrocleares distribuidas de forma bilateral. Los exámenes permitieron arribar al diagnóstico de un linfoma no Hogdkin difuso de células B grandes y de un granuloma anular.Granuloma Annulare Associated with non Hodgkin Diffuse Large B-cell LymphomaThe case of a male, 55 years old patient, with a history of controlled hypertension is presented. The patient was treated in the hematology service for adenopathies of lymphomatous type distributed in nodal chains: axillary, inguinal and epitrochlear and bilaterally distributed. Tests allowed to conclude a final diagnose of non Hodgkin diffuse large B-cell lymphoma and a granuloma annulare.  

  4. Amperometric determination of serum total cholesterol with nanoparticles of cholesterol esterase and cholesterol oxidase.

    Science.gov (United States)

    Aggarwal, V; Malik, J; Prashant, A; Jaiwal, P K; Pundir, C S

    2016-05-01

    We describe the preparation of glutaraldehyde cross-linked and functionalized cholesterol esterase nanoparticles (ChENPs) and cholesterol oxidase nanoparticles (ChOxNPs) aggregates and their co-immobilization onto Au electrode for improved amperometric determination of serum total cholesterol. Transmission electron microscope (TEM) images of ChENPs and ChOxNPs showed their spherical shape and average size of 35.40 and 56.97 nm, respectively. Scanning electron microscope (SEM) studies of Au electrode confirmed the co-immobilization of enzyme nanoparticles (ENPs). The biosensor exhibited optimal response at pH 5.5 and 40°C within 5 s when polarized at +0.25 V versus Ag/AgCl. The working/linear range of the biosensor was 10-700 mg/dl for cholesterol. The sensor showed high sensitivity and measured total cholesterol as low as 0.1 mg/dl. The biosensor was evaluated and employed for total cholesterol determination in sera of apparently healthy and diseased persons. The analytical recovery of added cholesterol was 90%, whereas the within-batch and between-batch coefficients of variation (CVs) were less than 2% and less than 3%. There was a good correlation (r = 0.99) between serum cholesterol values as measured by the standard enzymic colorimetric method and the current method. The initial activity of ENPs/working electrode was reduced by 50% during its regular use (200 times) over a period of 60 days when stored dry at 4°C.

  5. CRED APEX Drifting Buoy Argos_ID 25330 Data Maro Reef, Northwestern Hawaiian Islands, 200109-200201 (NODC Accession 0049436)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — CRED APEX drifter Argos_ID 25330 was deployed in the region of NW Hawaiian Islands to assess ocean currents and sea surface temperature. APEX drifter data files...

  6. Granuloma telangiectásico asociado a alteración hormonal

    Directory of Open Access Journals (Sweden)

    Estephannia Mora Solano

    2013-10-01

    Full Text Available Title: Telangiecticum granuloma associated to hormonal alterations.ResumenEl granuloma telangiectásico es una lesión mucocutánea benigna no neoplásica, de origen epitelial, contenido vascular y crecimiento rápido, cuya etiología es atribuible a un trauma menor pero constante. Se asocia a alteraciones hormonales propias del embarazo y la pubertad. En la cavidad oral tiene predilección a nivel de la encía. A continuación se presenta caso clínico de una paciente de 25 años de edad, quien acude a consulta odontológica por presentar una lesión tumoral que se desarrolló mientras estaba en el tercer mes de embarazo, localizada en el sector anteroinferior, dificultando la fonación, masticación y deglución. Se realizó escisión quirúrgica y al efectuar estudio histopatológico se confirmó diagnóstico de granuloma telangiectásico. (DUAZARY 2012 No. 1, 65 - 67AbstractTelangiecticum granuloma is a nonneoplastic benign mucocutaneous lesion of epitelial origin, vascular content and fast growing, etiology is attributable to minor and constant trauma. In the oral cavity it has a predilection to the gum. We present a case of a female 25 years old patient who goes to dental consult for presenting a tumor lesion while she was in the third month of pregnancy, located in the jaw, making difficult the phonation, mastication and swallowing. We proceed to surgical excision and pathological studies confirmed the diagnosis of telangiectaticum granuloma.Key words: Pyogenic granuloma; pregnancy; hyperplasia; hormones. (Mesh Database.

  7. Relationship Between HIV Coinfection, Interleukin 10 Production, and Mycobacterium tuberculosis in Human Lymph Node Granulomas

    Science.gov (United States)

    Diedrich, Collin R.; O'Hern, Jennifer; Gutierrez, Maximiliano G.; Allie, Nafiesa; Papier, Patricia; Meintjes, Graeme; Coussens, Anna K.; Wainwright, Helen; Wilkinson, Robert J.

    2016-01-01

    Background. Human immunodeficiency virus type 1 (HIV)–infected persons are more susceptible to tuberculosis than HIV–uninfected persons. Low peripheral CD4+ T-cell count is not the sole cause of higher susceptibility, because HIV–infected persons with a high peripheral CD4+ T-cell count and those prescribed successful antiretroviral therapy (ART) remain more prone to active tuberculosis than HIV–uninfected persons. We hypothesized that the increase in susceptibility is caused by the ability of HIV to manipulate Mycobacterium tuberculosis–associated granulomas. Methods. We examined 71 excised cervical lymph nodes (LNs) from persons with HIV and M. tuberculosis coinfection, those with HIV monoinfection, and those with M. tuberculosis monoinfection with a spectrum of peripheral CD4+ T-cell counts and ART statuses. We quantified differences in M. tuberculosis levels, HIV p24 levels, cellular response, and cytokine presence within granulomas. Results. HIV increased M. tuberculosis numbers and reduced CD4+ T-cell counts within granulomas. Peripheral CD4+ T-cell depletion correlated with granulomas that contained fewer CD4+ and CD8+ T cells, less interferon γ, more neutrophils, more interleukin 10 (IL-10), and increased M. tuberculosis numbers. M. tuberculosis numbers correlated positively with IL-10 and interferon α levels and fewer CD4+ and CD8+ T cells. ART reduced IL-10 production. Conclusions. Peripheral CD4+ T-cell depletion correlated with increased M. tuberculosis presence, increased IL-10 production, and other phenotypic changes within granulomas, demonstrating the HIV infection progressively changes these granulomas. PMID:27462092

  8. Suture Granuloma Showing False-Positive Findings on FDG-PET

    Directory of Open Access Journals (Sweden)

    Kohei Takahara

    2013-01-01

    Full Text Available We report a case of a 33-year-old male with a mixed germ-cell testicular tumor. Postoperative follow-up FDG-PET revealed concentration of FDG in the left inguinal area which is not tumor metastasis or local recurrence but suture reactivity granuloma. In this paper, we reviewed suture granulomas associated with false-positive findings on FDG-PET after surgery. If FDG-PET will be used more frequently in the future, it will be necessary to refrain from using silk thread in order to prevent any unnecessary surgery.

  9. Suture Granuloma Mimicking Renal Cell Carcinoma: Magnetic Resonance Imaging (MRI and Pathologic Correlation

    Directory of Open Access Journals (Sweden)

    İbrahim İlker Öz

    2014-11-01

    Full Text Available Solid renal masses are generally distinguished with contrast enhancement and intratumoral fatty foci by radiological examinations. The present of enhancement is most important criteria for diagnosis of malignant lesions. Generally, a contrast enhanced solid mass in kidney is accepted as a neoplasm. Foreign body granuloma is an extraordinary cause of enhanced solid renal mass. This case of a renal suture granuloma demonstrated peripheral enhanced exophytic renal mass mimic renal cell carcinoma, and underwent surgery. At the solid renal mass with different radiological features, biopsy is an option to determining the necessity of surgery as well as the surgical approach.

  10. Oral pulse or hyaline ring granuloma: A case report and a brief review

    Directory of Open Access Journals (Sweden)

    Swetha Acharya

    2015-01-01

    Full Text Available Pulse or hyaline ring granulomas are rare but are well-defined oral and extraoral lesions due to implantation of the cellulose moiety of plant foods in contrast starch components. A unique form as reactive gingival growth showing histologic features of oral pulse or hyaline ring granuloma (OPHRG which had resulted from implantation of food particles of plant or vegetable origin into the periodontium has been illustrated. Such a presentation is attributable to compromised periodontal health and poor oral hygiene favoring the implantation of food particles has been described here along with a literature update on OPHRG.

  11. Proliferative activity in oral pyogenic granuloma: A comparative immunohistochemical study

    Directory of Open Access Journals (Sweden)

    Rezvani Gita

    2010-07-01

    Full Text Available Context: Pyogenic granuloma (PG is one of the most common reactive vascular lesions in the oral mucosa, which has been divided into the lobular capillary hemangioma (LCH and the non lobular type (non-LCH as two distinct entities, on the basis of some investigations. Aims: This study aims to compare the proliferative and angiogenic activity of two histological types of PG to determine whether they have two distinct types of biological behavior. Settings and Design: In this retrospective cross-sectional study, immunostaining was performed on 10 cases of each type of PG. Materials and Methods: About 4μm sections were cut from formalin-fixed paraffin-embedded blocks and each specimen was stained with both anti-CD31 and anti-Ki-67 antibodies simultaneously. Labeling index (LI was determined for both types by counting Ki-67 and CD31 positive cells separately and simultaneously in 1000 stromal and luminal cells. Micro vessel count (MVC, the mean number of micro vessels in five areas at Χ200 magnification, was also determined for both groups. Statistical Analysis: The results were statistically compared using the Mann-Whitney U-test. Results: Ki-67 LI in LCH (5.4 ± 2.4 was higher than non-LCH (3.9 ± 3.9. The percentage of CD31 positive cells in LCH (28.5 ± 22 was lower than non-LCH (37.1 ± 20.8 and simultaneously immunostaining for both markers in LCH type (2.4 ± 2.1 was higher than non-LCH (1.2 ± 1. The MVC was approximately 77.35 ± 34.6 and 82.6 ± 42.7 in the lobular areas of LCH and central areas of non-LCH PG, respectively. These differences were not statistically significant. Conclusions: These results demonstrate a higher proliferation activity in endothelial cells of LCH PG than in non-LCH.

  12. Novo tratamento para extenso granuloma paracoccidioidomicótico cerebral

    Directory of Open Access Journals (Sweden)

    Carlos A. M. Guerreiro

    1987-12-01

    Full Text Available Um paciente de 59 anos com grande granuloma paracoccidioidomicótico na região fronto-parietal direita submetido a tratamento com sulfametoxazol-trimetoprim apenas é apresentado. O paciente foi internado com história de crises epiléticas parciais motoras à esquerda secundariamente generalizadas há 4 meses, associadas a progressiva hemiparesia esquerda há 2 meses. O exame físico mostrou discreto descoramento da mucosa, diminuição de murmúrio vesicular e leve hepatomegalia. O exame neurológico revelou hemiparesia esquerda completa, predominando em membros superior, RX de crânio, exame do LCR e EEG mostraram-se normais. Tomografia computadorizada revelou grande área hipodensa na região fronto-parietal direita estendendo-se até o córtex; injeção do contraste acentuou a área central e mostrou formação de um anel ao redor da lesão. RX de tórax mostrou infiltrado pulmonar difuso e bilateral, mais proeminente nas regiões para-hilares, consistente com paracoccidiodomicose pulmonar. Exame do escarro mostrou a presença do Paracoccidioides brasiliensis. As crises epiléticas foram controladas com 100 mg de fenobarbital. Foi iniciado tratamento com 1200 mg de sulfametoxazole mais 240 mg de trimetoprim duas vezes ao dia. Uma semana após o início do tratamento começou a melhora da hemiparesia. Os controles tomográficos evidenciaram a regressão da lesão. Acompanhado por 26 meses, o paciente persiste assintomático usando 800 mg de sulfametoxazol e 160 mg de trimetoprim. Os autores discutem essa terapia para lesões extensas, até então considerada pela literatura consultada como de resolução cirúrgica e/ou pelo uso da anfotericina B.

  13. Pleural tuberculosis in patients with early HIV infection is associated with increased TNF-alpha expression and necrosis in granulomas.

    Directory of Open Access Journals (Sweden)

    Juanita Bezuidenhout

    Full Text Available Although granulomas may be an essential host response against persistent antigens, they are also associated with immunopathology. We investigated whether HIV co-infection affects histopathological appearance and cytokine profiles of pleural granulomas in patients with active pleural tuberculosis (TB. Granulomas were investigated in pleural biopsies from HIV positive and negative TB pleuritis patients. Granulomas were characterised as necrotic or non-necrotic, graded histologically and investigated for the mRNA expression of IL-12, IFN-gamma, TNF-alpha and IL-4 by in situ hybridisation. In all TB patients a mixed Th1/Th2 profile was noted. Necrotic granulomas were more evident in HIV positive patients with a clear association between TNF-alpha and necrosis. This study demonstrates immune dysregulation which may include TNF-alpha-mediated immunopathology at the site of disease in HIV infected pleural TB patients.

  14. [Granuloma Gravidarum in a 37-year-old 1st Gravida, 1st Para--A Case Report].

    Science.gov (United States)

    Findeklee, S

    2015-10-01

    The granuloma gravidarum is a rare benign tumour with gingival origin. It occurs in circa 0.2% of pregnancies. Mostly we see an asymptomatic course of disease terminated by hormonal changes after delivery. If the granuloma is associated with complaints of the pregnant woman, for example masticational pain or recurrent bleedings, therapeutic options are conservative therapy, surgery or delivery. We report the case of a 37-year-old 1st gravida, 1st para who had an induced delivery in the 39+2 gestational week because of a symptomatic granuloma gravidarum. We saw a spontaneous remission of the granuloma within 3 months post partum. The case report underlines the importance of suitable information for pregnant women about oral hygiene and the necessity of regular dental controls during pregnancy for prophylaxis of granuloma gravidarum.

  15. Clinical implications of APEX1 and Jagged1 as chemoresistance factors in biliary tract cancer

    Science.gov (United States)

    Kim, Hong-Beum; Cho, Won Jin; Choi, Nam Gyu; Kim, Sung-Soo; Park, Jun Hee; Lee, Hee-Jeong

    2017-01-01

    Purpose Biliary cancer is a highly malignant neoplasm with poor prognosis and most patients need to undergo palliative chemotherapy, however major clinical problem associated with the use of chemotherapy is chemoresistance. So far, we aimed at investigating clinical implications of apurinic/apyrimidinic endodeoxyribonuclease 1 (APEX1) and Jagged1 as chemoresistance factors in biliary tract cancer. Methods We used 5 human biliary tract cancer cell lines (SNU-245, SNU-308, SNU-478, SNU-1079, and SNU-1196), and investigated the chemosensitivity of APEX1 and Jagged1 through 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay and Western blot. Alternately, the 10 patients of advanced biliary cancer consist of 2 group according to the chemotherapy response examined by immunohistochemistry using APEX1 and Jagged1 antibody, and protein expression level was scored for staining intensity and percent positive cell. Results The result of MTT assay after APEX1 knockdown showed that strong coexpression of APEX1 and Jagged1 cell line (SNU-245, SNU-1079, and SNU-1196) showed a greater decrease in IC50 of chemotherapeutic agent (5-fluorouracil, gemcitabine and cisplatin). The Western blot analysis of APEX1 and Jagged1 expression in biliary cancer cell lines after APEX1 knockdown definitively demonstrated decreased Jagged1 expression. The APEX1 and Jagged1expression level of immunohistochemistry represented that chemorefractory patients had higher than chemoresponsive patients. Conclusion These results demonstrate that simultaneous high expression of APEX1 and Jagged1 is associated with chemoresistance in biliary cancer and suggest that is a potential therapeutic target for chemoresistance in advanced biliary cancer. PMID:28090501

  16. Cholesterol confusion and statin controversy

    Institute of Scientific and Technical Information of China (English)

    Robert; Du; Broff; Michel; de; Lorgeril

    2015-01-01

    The role of blood cholesterol levels in coronary heart disease(CHD) and the true effect of cholesterollowering statin drugs are debatable. In particular,whether statins actually decrease cardiac mortality and increase life expectancy is controversial. Concurrently,the Mediterranean diet model has been shown to prolong life and reduce the risk of diabetes,cancer,and CHD. We herein review current data related to both statins and the Mediterranean diet. We conclude that the expectation that CHD could be prevented or eliminated by simply reducing cholesterol appears unfounded. On the contrary,we should acknowledge the inconsistencies of the cholesterol theory and recognize the proven benefits of a healthy lifestyle incorporating a Mediterranean diet to prevent CHD.

  17. Massive consumption of gelatinous plankton by Mediterranean apex predators.

    Directory of Open Access Journals (Sweden)

    Luis Cardona

    Full Text Available Stable isotopes of carbon and nitrogen were used to test the hypothesis that stomach content analysis has systematically overlooked the consumption of gelatinous zooplankton by pelagic mesopredators and apex predators. The results strongly supported a major role of gelatinous plankton in the diet of bluefin tuna (Thunnus thynnus, little tunny (Euthynnus alletteratus, spearfish (Tetrapturus belone and swordfish (Xiphias gladius. Loggerhead sea turtles (Caretta caretta in the oceanic stage and ocean sunfish (Mola mola also primarily relied on gelatinous zooplankton. In contrast, stable isotope ratios ruled out any relevant consumption of gelatinous plankton by bluefish (Pomatomus saltatrix, blue shark (Prionace glauca, leerfish (Lichia amia, bonito (Sarda sarda, striped dolphin (Stenella caerueloalba and loggerhead sea turtles (Caretta caretta in the neritic stage, all of which primarily relied on fish and squid. Fin whales (Balaenoptera physalus were confirmed as crustacean consumers. The ratios of stable isotopes in albacore (Thunnus alalunga, amberjack (Seriola dumerili, blue butterfish (Stromaeus fiatola, bullet tuna (Auxis rochei, dolphinfish (Coryphaena hyppurus, horse mackerel (Trachurus trachurus, mackerel (Scomber scombrus and pompano (Trachinotus ovatus were consistent with mixed diets revealed by stomach content analysis, including nekton and crustaceans, but the consumption of gelatinous plankton could not be ruled out completely. In conclusion, the jellyvorous guild in the Mediterranean integrates two specialists (ocean sunfish and loggerhead sea turtles in the oceanic stage and several opportunists (bluefin tuna, little tunny, spearfish, swordfish and, perhaps, blue butterfish, most of them with shrinking populations due to overfishing.

  18. Preparing ZEUS-2 for Observing Run at the APEX Telescope

    Science.gov (United States)

    Dahlin, Patrick; Vishwas, Amit; Nikola, Thomas; Stacey, Gordon J.

    2017-01-01

    ZEUS-2 is a direct detection grating spectrometer that was designed to maximize sensitivity for the detection of the far-infrared fine-structure lines from distant star forming galaxies as they are redshifted into the short submillimeter windows. ZEUS-2 employs two NIST TES bolometer arrays as its detector: one tuned to 400 μm and the other that consists of two sub-arrays, one tuned to 215 μm and the other tuned to 645 μm. Therefore, by placing bandpass filters directly above the detector ZEUS-2 can address four telluric windows (200 μm, 350 μm, 450 μm, and 650 μm) simultaneously on extended objects, and two windows (200 and 650 μm, or 350 and 450 μm) simultaneously on point sources. ZEUS-2 has now been deployed four times on the APEX telescope in Chile and demonstrated background limited performance both at 350 and 450 μm. As part of my NSF REU experience at Cornell in the summer of 2016, I helped with testing of ZEUS-2 in the lab and improving components for its use on the telescope. This poster will cover the principles of the ZEUS-2 instrument and some of the recent scientific results.

  19. Massive consumption of gelatinous plankton by Mediterranean apex predators.

    Science.gov (United States)

    Cardona, Luis; Álvarez de Quevedo, Irene; Borrell, Assumpció; Aguilar, Alex

    2012-01-01

    Stable isotopes of carbon and nitrogen were used to test the hypothesis that stomach content analysis has systematically overlooked the consumption of gelatinous zooplankton by pelagic mesopredators and apex predators. The results strongly supported a major role of gelatinous plankton in the diet of bluefin tuna (Thunnus thynnus), little tunny (Euthynnus alletteratus), spearfish (Tetrapturus belone) and swordfish (Xiphias gladius). Loggerhead sea turtles (Caretta caretta) in the oceanic stage and ocean sunfish (Mola mola) also primarily relied on gelatinous zooplankton. In contrast, stable isotope ratios ruled out any relevant consumption of gelatinous plankton by bluefish (Pomatomus saltatrix), blue shark (Prionace glauca), leerfish (Lichia amia), bonito (Sarda sarda), striped dolphin (Stenella caerueloalba) and loggerhead sea turtles (Caretta caretta) in the neritic stage, all of which primarily relied on fish and squid. Fin whales (Balaenoptera physalus) were confirmed as crustacean consumers. The ratios of stable isotopes in albacore (Thunnus alalunga), amberjack (Seriola dumerili), blue butterfish (Stromaeus fiatola), bullet tuna (Auxis rochei), dolphinfish (Coryphaena hyppurus), horse mackerel (Trachurus trachurus), mackerel (Scomber scombrus) and pompano (Trachinotus ovatus) were consistent with mixed diets revealed by stomach content analysis, including nekton and crustaceans, but the consumption of gelatinous plankton could not be ruled out completely. In conclusion, the jellyvorous guild in the Mediterranean integrates two specialists (ocean sunfish and loggerhead sea turtles in the oceanic stage) and several opportunists (bluefin tuna, little tunny, spearfish, swordfish and, perhaps, blue butterfish), most of them with shrinking populations due to overfishing.

  20. Mapping dust in Orion protostars: from Herschel to APEX

    Science.gov (United States)

    Stanke, Thomas; Stutz, Amelia; Megeath, Thomas; HOPS Team

    2013-07-01

    HOPS (Herschel Orion Protostar Survey) is a 70 and 160mum Herschel PACS survey towards a sample of Spitzer identified protostar candidates in the Orion A and B giant molecular clouds. In this poster we give an overview of our efforts to obtain longer wavelength dust continuum maps, using the Laboca and Saboca cameras (870 and 350mum, respectively) at the APEX telescope, which provide maps at spatial resolutions well matched to the Herschel PACS data. The Laboca maps cover the entire field surveyed also by Herschel, providing a dust continuum measurement for all protostars observed by Herschel. The Saboca maps are restricted to smaller maps, mainly targeting PACS-bright protostar candidates, new protostar candidates not seen previously by Spitzer and identified from the Herschel maps, and also all bright cores found in the Laboca maps which do not have a protostellar association (i.e., starless cores). The data are used to provide long-wavelength submm photometry constraining the protostellar envelope masses. The 350mum Saboca data spatially resolve the emission from the outer envelope and are used to constrain their radial density distribution. Furthermore, combined with the Herschel data, we derive column density and temperature maps of the dense gas surrounding the protostars.

  1. Acute orbital apex syndrome and rhino-orbito-cerebral mucormycosis

    Directory of Open Access Journals (Sweden)

    Anders UM

    2015-04-01

    Full Text Available Ursula M Anders,1 Elise J Taylor,1 Joseph R Martel,1–3 James B Martel1–3 1Research Center, Martel Eye Medical Group, Rancho Cordova, 2Graduate Medical Education, California Northstate University College of Medicine, Elk Grove, 3Department of Ophthalmology, Dignity Health, Carmichael, CA, USA Purpose: To demonstrate the successful clinical identification and management of rhino-orbital mucormycosis, a fungal infection with a high mortality rate. Patients and methods: A diabetic male patient with a headache and orbital apex syndrome in the right eye was examined using computed tomography (CT and magnetic resonance imaging (MRI for a possible fungal infection. Endoscopic surgical resection was performed and a pathology sample was taken. Specimens were prepared with Gömöri methenamine silver and hematoxylin and eosin staining. The patient was treated with liposomal amphotericin B 400 mg daily, followed by posaconazole 400 mg twice daily. Results: CT and MRI revealed a mass of the right sphenoid spreading into the orbit, indicative of a fungal infection. The biopsy confirmed the diagnosis of mucormycosis. Complete recovery of eyelid and oculomotor function was achieved after 10 months of treatment, although the patient continues to suffer from irreversible blindness in the right eye due to optic nerve atrophy. He has been without signs or symptoms of recurrence. Conclusion: Patients with rhino-orbito-cerebral mucormycosis need extensive surgical and medical treatment to maximize outcomes. Success requires multidisciplinary management. Keywords: ophthalmoplegia, sixth nerve palsy, diabetes mellitus, nephrotoxicity, amphotericin B, posaconazole

  2. Precision of multi-frequency electronic apex locators.

    Science.gov (United States)

    George, Roy

    2016-09-01

    Data sourcesCochrane Central Register of Controlled Trials, Medline, Embase and Scopus databases.Study selectionStudies that reported the precision of electronic apex locators (EALs) in locating the apical constriction (AC) in primary root canal treatment of human teeth compared with a histologic evaluation of the AC were considered.Data extraction and synthesisData were extracted and quality assessed independently by two reviewers.ResultsTen studies were included, reporting on 1105 EAL measurements. Seven studies were considered to be at high risk of bias and three at low risk. Four different EALs were evaluated; Root ZX (J Morita, Tokyo, Japan), Justy II (Hager & Werken GmbH & Co, Duisburg, Germany), Endy 5000 (Loser Co, Leverkusen, Germany) and Endox (Lysis Co, Milan, Italy). Three EALs, Root ZX, Justy II and Endy 5000 were more accurate than the Endox in determining the distance between the file tip and the apical constriction. Pulp status was only available for 194 (17.55%) of the measurements. The status of the pulp (vital or necrotic) had no significant effect on precision.ConclusionsThe precision of electronic working length measurement depends on the device used and the type of irrigation and is not influenced by the status of the pulp tissue.

  3. Remnant cholesterol and ischemic heart disease

    DEFF Research Database (Denmark)

    Varbo, Anette; Nordestgaard, Børge G

    2014-01-01

    PURPOSE OF REVIEW: To review recent advances in the field of remnant cholesterol as a contributor to the development of ischemic heart disease (IHD). RECENT FINDINGS: Epidemiologic, mechanistic, and genetic studies all support a role for elevated remnant cholesterol (=cholesterol in triglyceride......-rich lipoproteins) as a contributor to the development of atherosclerosis and IHD. Observational studies show association between elevated remnant cholesterol and IHD, and mechanistic studies show remnant cholesterol accumulation in the arterial wall like LDL-cholesterol (LDL-C) accumulation. Furthermore, large...... genetic studies show evidence of remnant cholesterol as a causal risk factor for IHD independent of HDL-cholesterol levels. Genetic studies also show that elevated remnant cholesterol is associated with low-grade inflammation, whereas elevated LDL-C is not. There are several pharmacologic ways of lowering...

  4. Polarizable multipolar electrostatics for cholesterol

    Science.gov (United States)

    Fletcher, Timothy L.; Popelier, Paul L. A.

    2016-08-01

    FFLUX is a novel force field under development for biomolecular modelling, and is based on topological atoms and the machine learning method kriging. Successful kriging models have been obtained for realistic electrostatics of amino acids, small peptides, and some carbohydrates but here, for the first time, we construct kriging models for a sizeable ligand of great importance, which is cholesterol. Cholesterol's mean total (internal) electrostatic energy prediction error amounts to 3.9 kJ mol-1, which pleasingly falls below the threshold of 1 kcal mol-1 often cited for accurate biomolecular modelling. We present a detailed analysis of the error distributions.

  5. Regulation of biliary cholesterol secretion and reverse cholesterol transport

    NARCIS (Netherlands)

    Dikkers, Arne

    2016-01-01

    According to the World Health Organization the number one cause of death throughout the world is cardiovascular disease. Therefore, there is an urgent need for new therapeutic strategies to prevent and treat cardiovascular disease. One possible way is to target the HDL-driven reverse cholesterol tra

  6. Cholesterol absorption and excretion in ileostomy subjects on high- and low-dietary-cholesterol intakes.

    Science.gov (United States)

    Ellegård, L; Bosaeus, I

    1994-01-01

    Six healthy ileostomy subjects were given [3H]cholesterol and [14C]beta-sitosterol in a single meal together with two controlled diets containing 150 or 450 mg cholesterol/d. Each diet was eaten for 3 d. Cholesterol absorption and excretion of cholesterol, bile acids, fat, energy, and nitrogen were analyzed. Fractional cholesterol absorption increased from 44 +/- 2.6% (mean +/- SE) to 61 +/- 3.4% (P effluent, or excretion of energy, nitrogen, fat, and bile acids did not differ between periods. Endogenous cholesterol excretion remained unchanged whereas net cholesterol excretion (output minus intake) was 37% higher (P < 0.05) on low compared with high cholesterol intake.

  7. Electronic apex locator: A comprehensive literature review — Part II: Effect of different clinical and technical conditions on electronic apex locator′s accuracy

    Directory of Open Access Journals (Sweden)

    Hamid Razavian

    2014-01-01

    Full Text Available Introduction: To investigate the effects of different clinical and technical conditions on the accuracy of electronic apex locators (EALs. Materials and Methods: "Tooth apex," "dental instrument," "odontometry," "electronic medical," and "electronic apex locator" were searched as primary identifiers via Medline/PubMed, Cochrane library, and Scopus data base up to 30 July 2013. Original articles that fulfilled the inclusion criteria were selected and reviewed. Results: Out of 402 relevant studies, 183 were selected based on the inclusion criteria. In this part, 75 studies are presented. Pulp vitality conditions and root resorption, types of files and irrigating materials do not affect an EAL′s accuracy; however, the file size and foramen diameter can affect its accuracy. Conclusions: Various clinical conditions such as the file size and foramen diameter may affect EALs′ accuracy. However, more randomized clinical trials are needed for definitive conclusion.

  8. Measurements of apex seal behavior in a rotary engine using four displacement sensors; Rotary engine no apex seal kyodo. Yon`i sensor ni yoru sokutei

    Energy Technology Data Exchange (ETDEWEB)

    Matsuura, K. [Aoyama Gakuin University, Tokyo (Japan). College of Science and Engineering

    1997-05-25

    Behavior measurements of an apex seal of three-piece slanted horizontal split type were made, using an overhanging eccentric shaft-type single-rotor engine equipped with a multichannel packaged slip ring. To analyze the behavior, a computer plotting program was developed, by means of which the sequences of the configuration of top and bottom parts in the slot at given eccentric shaft angles were plotted on the trochoidal curves from the measured displacement data. The measurement results revealed the details of the behavior. Under high working chamber pressure, the top part of the leading apex seal is flush with the leading side of the slot, while that of the trailing apex seal is considerably tilted with respect to the trailing edge of the slot. 8 refs., 15 figs., 1 tab.

  9. Dilemma in the management of central giant cell granuloma of maxilla

    Directory of Open Access Journals (Sweden)

    Rajendra B Metgudmath

    2013-01-01

    Full Text Available Central giant cell granuloma is a rare benign lesion occasionally causing severe local destruction. Surgical excision is the main stay of treatment. As this lesion is unusual in clinical practice and is associated with dilemma in the treatment, we present here a case report with review of the literature concerning management.

  10. Dermoscopy could be useful in differentiating sarcoidosis from necrobiotic granulomas even after treatment with systemic steroids

    Science.gov (United States)

    Ramadan, Shahira; Hossam, Dalia; Saleh, Marwah A.

    2016-01-01

    Background: Diagnosing cutaneous sarcoidosis and necrobiotic granulomas is challenging. Objective: Assessing the value of dermoscopy in differentiating cutaneous sarcoidosis from necrobiotic granulomas and evaluating whether their dermoscopic features will be altered after treatment. Methods: Nineteen cutaneous sarcoidosis and 11 necrobiotic granuloma patients (2 necrobiosis lipoidica, 4 granuloma annulare and 5 rheumatoid nodule) were included in this study. The diagnosis was confirmed by skin biopsy. The lesions were examined using non-contact polarized dermoscope (Dermlite 2 HR-Pro; 3Gen, San Juan Capistrano, CA). Results: Ten out of 19 cutaneous sarcoidosis patients and 7/11 necrobiotic cases group were receiving treatments (topical, intralesional or systemic steroids ± chloroquine) but still have cutaneous lesions. Treatment duration in the sarcoidosis group ranged from 2 months to 10 years (median 3 years) and in the necrobiotic cases group ranged from 3 months to 16 years (median 2 years). Pink homogenous background, translucent orange areas, white scar-like depigmentation and fine white scales were significantly associated with the cutaneous sarcoidosis compared to necrobiotic cases group. On the other hand mixed pink, white and yellowish background was significantly associated with the necrobiotic cases group. No significant difference in the dermoscopic findings was detected between treated and non-treated patients. Conclusion: Some dermoscopic findings are shared between the cutaneous sarcoidosis group and the necrobiotic cases group, yet dermoscopy could be a useful aid in differentiating them even after treatment. PMID:27648379

  11. Recurrence of sarcoid granulomas in lung transplant recipients is common and does not affect overall survival

    DEFF Research Database (Denmark)

    Schultz, Hans Henrik; Andersen, C B; Steinbrüchel, D;

    2014-01-01

    Background: Sarcoidosis represents 2,5% of all indications for lung transplantation and criteria are generally assumed to be the same as for pulmonary fibrosis. Recurrence of granulomas in transplanted lungs has earlier been proved to derive from recipient immune cells, but its role in relation t...

  12. [Plasma cell granuloma in the lung and mediastino-pulmonary sarcoid lesions (author's transl)].

    Science.gov (United States)

    Sebag, A; Amouroux, J; de Saint-Florent, G; Letinier, J Y; Valeyre, D; Battesti, J P

    1980-01-01

    The authors report a case of inflammatory plasma cell pseudo-tumor in the lung associated with mediastino-pulmonary sarcoid histological lesions. Diffusion of the latter to pulmonary parenchyma, the intensity of the follicular reaction in mediastinal lymph nodes together with a positive Kveim test suggest the fortuitous association of a mediastinal-pulmonary sarcoidosis with a plasma cell granuloma.

  13. Granuloma Annulare, Autoimmune Thyroiditis, and Lichen Sclerosus in a Woman: Randomness or Significant Association?

    OpenAIRE

    Mariele De Paola; Anastasia Batsikosta; Luca Feci; Mattia Benedetti; Roberta Bilenchi

    2013-01-01

    We report a 60-year-old Caucasian female with a 2-year history of diffused granuloma annulare (GA), who presented for the simultaneous occurrence of genital lichen sclerosus (LS) and autoimmune thyroiditis (AT). In our opinion this combination is not just coincidental but may share similar immunopathological mechanisms.

  14. Granuloma Annulare, Autoimmune Thyroiditis, and Lichen Sclerosus in a Woman: Randomness or Significant Association?

    Directory of Open Access Journals (Sweden)

    Mariele De Paola

    2013-01-01

    Full Text Available We report a 60-year-old Caucasian female with a 2-year history of diffused granuloma annulare (GA, who presented for the simultaneous occurrence of genital lichen sclerosus (LS and autoimmune thyroiditis (AT. In our opinion this combination is not just coincidental but may share similar immunopathological mechanisms.

  15. Biochemical and immunohistochemical comparison of collagen in granuloma annulare and skin sarcoidosis.

    Science.gov (United States)

    Oikarinen, A; Kinnunen, T; Kallioinen, M

    1989-01-01

    Collagen was studied by biochemical and immunohistochemical means in 5 patients with granuloma annulare (GA) and 3 with cutaneous sarcoidosis (SA). The solubility of collagen from the lesional skin in acetic acid was higher than that of collagen from unaffected skin from both patients and control subjects. Collagen concentration in the skin lesions, measured in terms of hydroxyproline content, was reduced in 3 patients with granuloma annulare and one with sarcoidosis, but the ratio of type III/I collagen was unchanged vis-à-vis non-affected skin. The collagen concentration in non-affected skin of both GA and SA-patients was also lower than in controls. The most typical immunohistochemical finding was the association of type III procollagen and fibronectin with granulomas in the lesional skin of both GA and SA cases. The activity of prolyl hydroxylase, a key enzyme in collagen biosynthesis, was markedly increased in the lesional skin, indicating that collagen synthesis in vivo was also increased. Surprisingly, collagen synthesis was not increased in cell culture studies. This could be due to cell selection as observed previously in scleroderma. Another possibility could be that various mediators released in vivo from inflammatory cells activate fibroblasts. However, when cells are subcultivated, this effect is not maintained. In conclusion, marked changes in collagen could be observed in granuloma annulare and skin sarcoidosis, reflecting increased turnover of collagen in vivo.

  16. Primary ciliary dyskinesia: Kartagener syndrome with central giant cell granuloma. A case report.

    Science.gov (United States)

    Türkoğlu, Kivanç; Orhan, Kaan; Demir, Pinar; Karabulut, Bariş; Can-Karabulut, Deniz C

    2010-10-01

    This paper describes a clinical case of both giant cell granuloma and Kartagener syndrome in a 15-year-old male patient, with emphasis on the radiographic aspects of this extremely unusual pathology. To our knowledge, the presence of these 2 rare clinical conditions in the same patient has not been previously reported.

  17. Lesion-Specific Immune Response in Granulomas of Patients with Pulmonary Tuberculosis: A Pilot Study.

    Directory of Open Access Journals (Sweden)

    Selvakumar Subbian

    Full Text Available The formation and maintenance of granulomas is central to the host response to Mycobacterium tuberculosis (Mtb infection. It is widely accepted that the lungs of patients with tuberculosis (TB usually contain multiple infection foci, and that the granulomas evolve and differentiate independently, resulting in considerable heterogeneity. Although gene expression profiles of human blood cells have been proposed as biomarkers of Mtb infection and/or active disease, the immune profiles of discrete lesion types has not been studied extensively. Using histology, immunopathology and genome-wide transcriptome analysis, we explored the immunological profile of human lung TB granulomas. We show that although the different granulomas share core similarities in their immunological/inflammatory characteristics, they also exhibit significant divergence. Despite similar numbers of CD68+ macrophages in the different lesions, the extent of immune reactivity, as determined by the density of CD3+ T cells in the macrophage rich areas, and the extent of fibrosis, shows considerable variation. Both quantitative and qualitative differences among significantly differentially expressed genes (SDEG were noted in each of the lesion types studied. Further, network/pathway analysis of SDEG revealed differential regulation of inflammatory response, immune cell trafficking, and cell mediated immune response in the different lesions. Our data highlight the formidable challenges facing ongoing efforts to identify peripheral blood biomarkers due to the diversity of lesion types and complexity of local immune responses in the lung.

  18. A false-positive FDG uptake in Teflon granuloma: a case report.

    Science.gov (United States)

    Bajin, Münir Demir; Hosal, Ali Sefik

    2013-01-01

    Positron emmision tomography (PET) is successfully used to monitor malignancies. Unfortunately it is not tumor specific. We present a case with history of rectum cancer and lentigo maligna who underwent PET-CT which revealed an increased uptake in the larynx. What was first considered as a third primary turned out to be a Teflon granuloma.

  19. Velopharyngeal incompetence in a patient with multifocal eosinophilic granuloma (Hand-Schüller-Christian disease).

    Science.gov (United States)

    Cohn, E R; Garver, K L; Metz, H C; McWilliams, B J; Skolnick, M L; Garrett, W S

    1982-08-01

    The diagnosis and management of velopharyngeal insufficiency in a 16-year-old boy with multifocal eosinophilic granuloma (Hand-Schüller-Christian disease) is described. Medical history, speech and velopharyngeal valving information, and the results of clinical management are presented.

  20. Gallium-67 breast uptake in a patient with hypothalamic granuloma (sarcoid)

    Energy Technology Data Exchange (ETDEWEB)

    Vazquez, R.; Oates, E.; Sarno, R.C.; Fay, J.; Gale, D.R.

    1988-01-01

    An unusual case is presented of bilateral breast uptake of (/sup 67/Ga)citrate in a patient with a hypothalamic granuloma in the absence of galactorrhea is presented. A possible mechanism for this incidental finding is elevated prolactin levels, as other causes of gallium breast uptake such as drug therapy, and intrinsic breast disease, were not present.

  1. Cranial vena cava syndrome secondary to cryptococcal mediastinal granuloma in a cat

    OpenAIRE

    2015-01-01

    The successful management of cranial vena cava syndrome with suspected secondary chylothorax due to mediastinal cryptococcal granuloma in a 4-year-old male domestic shorthair cat is described. Treatment included long-term antifungal medication, short-term corticosteroids, intermittent thoracocentesis, rutin, octreotide, and enalapril.

  2. Principles and simulations of high-resolution STM imaging with a flexible tip apex

    Science.gov (United States)

    Krejčí, Ondrej; Hapala, Prokop; Ondráček, Martin; Jelínek, Pavel

    2017-01-01

    We present a robust but still efficient simulation approach for high-resolution scanning tunneling microscopy (STM) with a flexible tip apex showing sharp submolecular features. The approach takes into account the electronic structure of the sample and tip as well as relaxation of the tip apex. We validate our model by achieving good agreement with various experimental images which allows us to explain the origin of several observed features. Namely, we have found that the high-resolution STM mechanism consists of standard STM imaging, convolving electronic states of the sample and the tip apex orbital structure, with the contrast heavily distorted by the relaxation of the flexible apex caused by interaction with the substrate.

  3. The ABC of cholesterol transport

    NARCIS (Netherlands)

    Plösch, Torsten

    2004-01-01

    Cholesterol fulfills an indispensable role in mammalian physiology. It is an important constituent of all cell membranes. Furthermore, it is the precursor of steroid hormones, which regulate a variety of physiological functions, and of bile salts, which are necessary for the generation of bile flow

  4. Membrane Cholesterol Modulates Superwarfarin Toxicity

    Energy Technology Data Exchange (ETDEWEB)

    Marangoni, M. Natalia; Martynowycz, Michael W.; Kuzmenko, Ivan; Braun, David; Polak, Paul E.; Weinberg, Guy; Rubinstein, Israel; Gidalevitz, David; Feinstein, Douglas L.

    2016-04-26

    Superwarfarins are modified analogs of warfarin with additional lipophilic aromatic rings, up to 100-fold greater potency, and longer biological half-lives. We hypothesized that increased hydrophobicity allowed interactions with amphiphilic membranes and modulation of biological responses. We find that superwarfarins brodifacoum and difenacoum increase lactate production and cell death in neuroblastoma cells. In contrast, neither causes changes in glioma cells that have higher cholesterol content. After choleterol depletion, lactate production was increased and cell viability was reduced. Drug-membrane interactions were examined by surface X-ray scattering using Langmuir monolayers of dipalmitoylphosphatidylcholine and/or cholesterol. Specular X-ray reflectivity data revealed that superwarfarins, but not warfarin, intercalate between dipalmitoylphosphatidylcholine molecules, whereas grazing incidence X-ray diffraction demonstrated changes in lateral crystalline order of the film. Neither agent showed significant interactions with monolayers containing >20% cholesterol. These findings demonstrate an affinity of superwarfarins to biomembranes and suggest that cellular responses to these agents are regulated by cholesterol content.

  5. A 3-dimensional in vitro model of epithelioid granulomas induced by high aspect ratio nanomaterials

    Directory of Open Access Journals (Sweden)

    Hurt Robert H

    2011-05-01

    Full Text Available Abstract Background The most common causes of granulomatous inflammation are persistent pathogens and poorly-degradable irritating materials. A characteristic pathological reaction to intratracheal instillation, pharyngeal aspiration, or inhalation of carbon nanotubes is formation of epithelioid granulomas accompanied by interstitial fibrosis in the lungs. In the mesothelium, a similar response is induced by high aspect ratio nanomaterials, including asbestos fibers, following intraperitoneal injection. This asbestos-like behaviour of some engineered nanomaterials is a concern for their potential adverse health effects in the lungs and mesothelium. We hypothesize that high aspect ratio nanomaterials will induce epithelioid granulomas in nonadherent macrophages in 3D cultures. Results Carbon black particles (Printex 90 and crocidolite asbestos fibers were used as well-characterized reference materials and compared with three commercial samples of multiwalled carbon nanotubes (MWCNTs. Doses were identified in 2D and 3D cultures in order to minimize acute toxicity and to reflect realistic occupational exposures in humans and in previous inhalation studies in rodents. Under serum-free conditions, exposure of nonadherent primary murine bone marrow-derived macrophages to 0.5 μg/ml (0.38 μg/cm2 of crocidolite asbestos fibers or MWCNTs, but not carbon black, induced macrophage differentiation into epithelioid cells and formation of stable aggregates with the characteristic morphology of granulomas. Formation of multinucleated giant cells was also induced by asbestos fibers or MWCNTs in this 3D in vitro model. After 7-14 days, macrophages exposed to high aspect ratio nanomaterials co-expressed proinflammatory (M1 as well as profibrotic (M2 phenotypic markers. Conclusions Induction of epithelioid granulomas appears to correlate with high aspect ratio and complex 3D structure of carbon nanotubes, not with their iron content or surface area. This model

  6. Mycobacterium tuberculosis-Induced Polarization of Human Macrophage Orchestrates the Formation and Development of Tuberculous Granulomas In Vitro.

    Directory of Open Access Journals (Sweden)

    Zikun Huang

    Full Text Available The tuberculous granuloma is an elaborately organized structure and one of the main histological hallmarks of tuberculosis. Macrophages, which are important immunologic effector and antigen-presenting cells, are the main cell type found in the tuberculous granuloma and have high plasticity. Macrophage polarization during bacterial infection has been elucidated in numerous recent studies; however, macrophage polarization during tuberculous granuloma formation and development has rarely been reported. It remains to be clarified whether differences in the activation status of macrophages affect granuloma formation. In this study, the variation in macrophage polarization during the formation and development of tuberculous granulomas was investigated in both sections of lung tissues from tuberculosis patients and an in vitro tuberculous granuloma model. The roles of macrophage polarization in this process were also investigated. Mycobacterium tuberculosis (M. tuberculosis infection was found to induce monocyte-derived macrophage polarization. In the in vitro tuberculous granuloma model, macrophage transformation from M1 to M2 was observed over time following M. tuberculosis infection. M2 macrophages were found to predominate in both necrotic and non-necrotic granulomas from tuberculosis patients, while both M1 and M2 polarized macrophages were found in the non-granulomatous lung tissues. Furthermore, it was found that M1 macrophages promote granuloma formation and macrophage bactericidal activity in vitro, while M2 macrophages inhibit these effects. The findings of this study provide insights into the mechanism by which M. tuberculosis circumvents the host immune system as well as a theoretical foundation for the development of novel tuberculosis therapies based on reprogramming macrophage polarization.

  7. Frequency of the external resorptions of root apex

    Directory of Open Access Journals (Sweden)

    Opačić-Galić Vanja

    2004-01-01

    Full Text Available Root resorptions present a significant problem in endodontic therapy of the affected teeth and in dentistry in general. The objective of this study was to analyze, based on epidemiological and statistical research, the frequency of clinical incidence of pathological root resorptions in everyday practice related to localization, type of tooth, age and sex of patients. Radiographie documentation of patients treated from 1997 till 2002 at the Department of Conservative Dentistry and Endodontics, Faculty of Stomatology in Belgrade, was used as baseline for this study. Retroalveolar radiographs of teeth with visible signs of resorptions were singled out from 15654 patients' clinical records used for this study. The external resorptions were shown as radiolucent areas localized on various outer root surfaces, followed by significant or less significant resorption of lamina dura and alveolar bone. Out of all teeth analyzed in this study, 594 (3.79% showed some kind of resorption. The external resorptions were found to be more present in the upper jaw (55.10% and molars (50.30% than in the lower jaw (44.90% and single root teeth (49.70%, but in both cases without significant statistical differences. The most frequent localization of resorptions was root apex (82.44%. In regard to age, the most frequent resorptions were recorded in patients aged between 21 and 30 years (28.40%, and the lowest incidence was found in the youngest population (5.51%. The results also showed that resorptions were more frequent among the female population (59.04% than among the male population (40.96%. Based on these results, we may conclude that the external root resorptions are not a frequent clinical phenomenon. Proper and early diagnostics of such tissue pathology is one of the basic prerequisites for successful endodontic therapy of the affected root.

  8. Sixty-seven Cases of Abnormal Movement of the Cardiac Apex Treated with Bu Xin Tang

    Institute of Scientific and Technical Information of China (English)

    王平; 耿世钊

    2002-01-01

    @@ Bu Xin Tang (heart-reinforcement decoction) was used to treat 67 cases of abnormal movement of the cardiac apex based on differentiation of symptoms and signs. The results showed that, in most patients, there were remarkable improvement notonly for the symptoms but also for the abnormal movement of the cardiac apex. The cured plus remarkably effective rate was 87%, suggesting that it can postponeor prevent coronary heart attacks for the patient of prophase coronary heart disease.

  9. Differential TOR activation and cell proliferation in Arabidopsis root and shoot apexes

    Science.gov (United States)

    Li, Xiaojuan; Cai, Wenguo; Liu, Yanlin; Li, Hui; Fu, Liwen; Liu, Zengyu; Liu, Hongtao; Xu, Tongda; Xiong, Yan

    2017-01-01

    The developmental plasticity of plants relies on the remarkable ability of the meristems to integrate nutrient and energy availability with environmental signals. Meristems in root and shoot apexes share highly similar molecular players but are spatially separated by soil. Whether and how these two meristematic tissues have differential activation requirements for local nutrient, hormone, and environmental cues (e.g., light) remain enigmatic in photosynthetic plants. Here, we report that the activation of root and shoot apexes relies on distinct glucose and light signals. Glucose energy signaling is sufficient to activate target of rapamycin (TOR) kinase in root apexes. In contrast, both the glucose and light signals are required for TOR activation in shoot apexes. Strikingly, exogenously applied auxin is able to replace light to activate TOR in shoot apexes and promote true leaf development. A relatively low concentration of auxin in the shoot and high concentration of auxin in the root might be responsible for this distinctive light requirement in root and shoot apexes, because light is required to promote auxin biosynthesis in the shoot. Furthermore, we reveal that the small GTPase Rho-related protein 2 (ROP2) transduces light-auxin signal to activate TOR by direct interaction, which, in turn, promotes transcription factors E2Fa,b for activating cell cycle genes in shoot apexes. Consistently, constitutively activated ROP2 plants stimulate TOR in the shoot apex and cause true leaf development even without light. Together, our findings establish a pivotal hub role of TOR signaling in integrating different environmental signals to regulate distinct developmental transition and growth in the shoot and root. PMID:28223530

  10. SEPIA — A New Instrument for the Atacama Pathfinder Experiment (APEX) Telescope

    Science.gov (United States)

    Immer, K.; Belitsky, V.; Olberg, M.; De Breuck, C.; Conway, J.; Montenegro-Montes, F. M.; Perez-Beaupuits, J.-P.; Torstensson, K.; Billade, B.; De Beck, E.; Ermakov, A.; Ferm, S.-E.; Fredrixon, M.; Lapkin, I.; Meledin, D.; Pavolotsky, A.; Strandberg, M.; Sundin, E.; Arumugam, V.; Galametz, M.; Humphreys, E.; Klein, T.; Adema, J.; Barkhof, J.; Baryshev, A.; Boland, W.; Hesper, R.; Klapwijk, T. M.

    2016-09-01

    The Swedish-ESO PI receiver for APEX (SEPIA) was installed at the APEX telescope in 2015. This instrument currently contains ALMA Band 5 (157-212 GHz) and Band 9 (600-722 GHz) receivers. Commissioning and science verification for Band 5 have been successfully completed but are still ongoing for Band 9. The SEPIA instrument is briefly described and the commissioning of the Band 5 receiver and results from the first science observations are presented.

  11. What You Need to Know about Cholesterol

    Science.gov (United States)

    ... 164304.html What You Need to Know About Cholesterol Heart expert explains the difference between good and ... 28, 2017 MONDAY, March 27, 2017 (HealthDay News) -- Cholesterol plays a vital role in your health, so ...

  12. Do You Know Your Cholesterol Levels?

    Science.gov (United States)

    ... The Health Information Center Do You Know Your Cholesterol Levels? Print-friendly Version (PDF, 6.1 MB) ... Eat Smart Did you know that high blood cholesterol is a serious problem among Latinos? About one ...

  13. High Cholesterol: Medicines to Help You

    Science.gov (United States)

    ... Consumers Consumer Information by Audience For Women High Cholesterol--Medicines To Help You Share Tweet Linkedin Pin ... side effects for each drug, check Drugs@FDA . Cholesterol Absorption Inhibitors Brand Name Generic Name Zetia Ezetimibe ...

  14. Active membrane cholesterol as a physiological effector.

    Science.gov (United States)

    Lange, Yvonne; Steck, Theodore L

    2016-09-01

    Sterols associate preferentially with plasma membrane sphingolipids and saturated phospholipids to form stoichiometric complexes. Cholesterol in molar excess of the capacity of these polar bilayer lipids has a high accessibility and fugacity; we call this fraction active cholesterol. This review first considers how active cholesterol serves as an upstream regulator of cellular sterol homeostasis. The mechanism appears to utilize the redistribution of active cholesterol down its diffusional gradient to the endoplasmic reticulum and mitochondria, where it binds multiple effectors and directs their feedback activity. We have also reviewed a broad literature in search of a role for active cholesterol (as opposed to bulk cholesterol or lipid domains such as rafts) in the activity of diverse membrane proteins. Several systems provide such evidence, implicating, in particular, caveolin-1, various kinds of ABC-type cholesterol transporters, solute transporters, receptors and ion channels. We suggest that this larger role for active cholesterol warrants close attention and can be tested easily.

  15. Cholesterol, bile acid and triglyceride metabolism intertwined

    NARCIS (Netherlands)

    Schonewille, Marleen

    2016-01-01

    Hyperlipidemie wordt gekarakteriseerd door verhoogd plasma cholesterol en/of triglyceriden en sterk geassocieerd met het risico op cardiovasculaire aandoeningen. Dit proefschrift beschrijft onderzoek naar de regulatie van plasma cholesterol en triglyceriden concentraties en de achterliggende mechani

  16. Evolution mediates the effects of apex predation on aquatic food webs.

    Science.gov (United States)

    Urban, Mark C

    2013-07-22

    Ecological and evolutionary mechanisms are increasingly thought to shape local community dynamics. Here, I evaluate if the local adaptation of a meso-predator to an apex predator alters local food webs. The marbled salamander (Ambystoma opacum) is an apex predator that consumes both the spotted salamander (Ambystoma maculatum) and shared zooplankton prey. Common garden experiments reveal that spotted salamander populations which co-occur with marbled salamanders forage more intensely than those that face other predator species. These foraging differences, in turn, alter the diversity, abundance and composition of zooplankton communities in common garden experiments and natural ponds. Locally adapted spotted salamanders exacerbate prey biomass declines associated with apex predation, but dampen the top-down effects of apex predation on prey diversity. Countergradient selection on foraging explains why locally adapted spotted salamanders exacerbate prey biomass declines. The two salamander species prefer different prey species, which explains why adapted spotted salamanders buffer changes in prey composition owing to apex predation. Results suggest that local adaptation can strongly mediate effects from apex predation on local food webs. Community ecologists might often need to consider the evolutionary history of populations to understand local diversity patterns, food web dynamics, resource gradients and their responses to disturbance.

  17. The evaluation of four electronic apex locators in teeth with simulated horizontal oblique root fractures.

    Science.gov (United States)

    Goldberg, Fernando; Frajlich, Santiago; Kuttler, Sergio; Manzur, Emilio; Briseño-Marroquín, Benjamín

    2008-12-01

    The accuracy of four electronic apex locators (EALs) to locate the apical limit in teeth with simulated horizontal oblique root fractures was investigated. A horizontal oblique incomplete root fracture was simulated on 20 freshly extracted maxillary anterior teeth by means of a notch made on the vestibular root plane 8 mm from the anatomic apex. The EALs investigated were the ProPex (Dentsply Maillefer, Ballaigues, Switzerland), the NovApex (Forum Technologies, Rishon Le-Zion, Israel), the Root ZX (J. Morita Corp, Kyoto, Japan), and the Elements Apex Locator (SybronEndo, Orange CA). The electronic measurements were compared with the real "working length." The accuracy obtained was of 80% (n = 16) and 95% (n = 19) with the ProPex, 70% (n = 14) and 95% (n = 19) with the NovApex, 60% (n = 12) and 90% (n = 18) with the Root ZX, and 60% (n = 12) and 85% (n = 17) with the Elements Apex Locator when tolerances of 0.5-mm and 1.0-mm tolerance were, respectively, allowed. The analysis of variance (p > 0.05) and chi-square test (0.5 mm/p = 0.47 and 1.0 mm/p = 0.63 tolerances) showed no statistical significant differences between the EALs at either tolerance level.

  18. In vitro evaluation of the accuracy of five different electronic apex locators

    Directory of Open Access Journals (Sweden)

    Nasil Sakkir

    2015-01-01

    Full Text Available Objective of Study: To evaluate in vitro the efficacy of five different electronic apex locators (Root ZX II, i-Root, Endo Master, Triauto ZX, and Elements apex locator in locating the minor diameter. Materials and Methods: Thirty freshly extracted single-rooted maxillary central incisors were used for the study. Standard access preparation was carried out and the teeth were glued to three plastic frames containing alginate. Electronic working length measurement was determined using all the five apex locators. Following this, the actual canal length was determined by introducing a size 15 K-file into the canal until the tip of the file became visible at the apical foramen under microscope. The mean values of actual length and electronic working length readings were compared using Student t-test and multiple comparison procedures. Results: The average value for actual root canal length was 22.483 ± 1.8731 mm; and the mean electronic root canal length values for Root ZX II, i-Root, Elements, Endo Master, and Triauto ZX apex locators was 22.483 ± 1.7640 mm, 22.400 ± 1.7390 mm, 22.717 ± 1.9462 mm, 22.767 ± 1.9061 mm, and 22.417 ± 1.7523 mm, respectively. P > 0.05 for all the five tested apex locators. Conclusion: All the five modern apex locators tested in this study can determine the working length with high precision and greater predictability.

  19. Variability in tuberculosis granuloma T cell responses exists, but a balance of pro- and anti-inflammatory cytokines is associated with sterilization.

    Directory of Open Access Journals (Sweden)

    Hannah Priyadarshini Gideon

    2015-01-01

    Full Text Available Lung granulomas are the pathologic hallmark of tuberculosis (TB. T cells are a major cellular component of TB lung granulomas and are known to play an important role in containment of Mycobacterium tuberculosis (Mtb infection. We used cynomolgus macaques, a non-human primate model that recapitulates human TB with clinically active disease, latent infection or early infection, to understand functional characteristics and dynamics of T cells in individual granulomas. We sought to correlate T cell cytokine response and bacterial burden of each granuloma, as well as granuloma and systemic responses in individual animals. Our results support that each granuloma within an individual host is independent with respect to total cell numbers, proportion of T cells, pattern of cytokine response, and bacterial burden. The spectrum of these components overlaps greatly amongst animals with different clinical status, indicating that a diversity of granulomas exists within an individual host. On average only about 8% of T cells from granulomas respond with cytokine production after stimulation with Mtb specific antigens, and few "multi-functional" T cells were observed. However, granulomas were found to be "multi-functional" with respect to the combinations of functional T cells that were identified among lesions from individual animals. Although the responses generally overlapped, sterile granulomas had modestly higher frequencies of T cells making IL-17, TNF and any of T-1 (IFN-γ, IL-2, or TNF and/or T-17 (IL-17 cytokines than non-sterile granulomas. An inverse correlation was observed between bacterial burden with TNF and T-1/T-17 responses in individual granulomas, and a combinatorial analysis of pair-wise cytokine responses indicated that granulomas with T cells producing both pro- and anti-inflammatory cytokines (e.g. IL-10 and IL-17 were associated with clearance of Mtb. Preliminary evaluation suggests that systemic responses in the blood do not

  20. Cholesterol metabolism and homeostasis in the brain

    OpenAIRE

    Zhang, Juan; Qiang LIU

    2015-01-01

    Cholesterol is an essential component for neuronal physiology not only during development stage but also in the adult life. Cholesterol metabolism in brain is independent from that in peripheral tissues due to blood-brain barrier. The content of cholesterol in brain must be accurately maintained in order to keep brain function well. Defects in brain cholesterol metabolism has been shown to be implicated in neurodegenerative diseases, such as Alzheimer’s disease (AD), Huntington’s disease (HD)...

  1. Quercetin regulates hepatic cholesterol metabolism by promoting cholesterol-to-bile acid conversion and cholesterol efflux in rats.

    Science.gov (United States)

    Zhang, Min; Xie, Zongkai; Gao, Weina; Pu, Lingling; Wei, Jingyu; Guo, Changjiang

    2016-03-01

    Quercetin, a common member of the flavonoid family, is widely present in plant kingdom. Despite that quercetin is implicated in regulating cholesterol metabolism, the molecular mechanism is poorly understood. We hypothesized that quercetin regulates cholesterol homeostasis through regulating the key enzymes involved in hepatic cholesterol metabolism. To test this hypothesis, we compared the profile of key enzymes and transcription factors involved in the hepatic cholesterol metabolism in rats with or without quercetin supplementation. Twenty male Wistar rats were randomly divided into control and quercetin-supplemented groups. Serum total cholesterol, triglyceride, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and total bile acids in feces and bile were measured. Hepatic enzymatic activities were determined by activity assay kit and high-performance liquid chromatography-based analyses. The messenger RNA (mRNA) and protein expressions were determined by reverse transcriptase polymerase chain reaction and Western blot analyses, respectively. The results showed that the activity of hepatic cholesterol 7α-hydroxylase, a critical enzyme in the conversion of cholesterol to bile acids, was significantly elevated by quercetin. The expression of cholesterol 7α-hydroxylase, as well as liver X receptor α, an important transcription factor, was also increased at both mRNA and protein levels by quercetin. However, quercetin exposure had no impact on the activity of hepatic HMG-CoA reductase, a rate-limiting enzyme in the biosynthesis of cholesterol. We also found that quercetin treatment significantly increased ATP binding cassette transporter G1 mRNA and protein expression in the liver, suggesting that quercetin may increase hepatic cholesterol efflux. Collectively, the results presented here indicate that quercetin regulates hepatic cholesterol metabolism mainly through the pathways that promote cholesterol-to-bile acid conversion and

  2. Mechanism of Resistance to Dietary Cholesterol

    Directory of Open Access Journals (Sweden)

    Lindsey R. Boone

    2011-01-01

    Full Text Available Background. Alterations in expression of hepatic genes that could contribute to resistance to dietary cholesterol were investigated in Sprague-Dawley rats, which are known to be resistant to the serum cholesterol raising action of dietary cholesterol. Methods. Microarray analysis was used to provide a comprehensive analysis of changes in hepatic gene expression in rats in response to dietary cholesterol. Changes were confirmed by RT-PCR analysis. Western blotting was employed to measure changes in hepatic cholesterol 7α hydroxylase protein. Results. Of the 28,000 genes examined using the Affymetrix rat microarray, relatively few were significantly altered. As expected, decreases were observed for several genes that encode enzymes of the cholesterol biosynthetic pathway. The largest decreases were seen for squalene epoxidase and lanosterol 14α demethylase (CYP 51A1. These changes were confirmed by quantitative RT-PCR. LDL receptor expression was not altered by dietary cholesterol. Critically, the expression of cholesterol 7α hydroxylase, which catalyzes the rate-limiting step in bile acid synthesis, was increased over 4-fold in livers of rats fed diets containing 1% cholesterol. In contrast, mice, which are not resistant to dietary cholesterol, exhibited lower hepatic cholesterol 7α hydroxylase (CYP7A1 protein levels, which were not increased in response to diets containing 2% cholesterol.

  3. Isolation of Cholesterol from an Egg Yolk

    Science.gov (United States)

    Taber, Douglass F.; Li, Rui; Anson, Cory M.

    2011-01-01

    A simple procedure for the isolation of the cholesterol, by hydrolysis and extraction followed by column chromatography, is described. The cholesterol can be further purified by complexation with oxalic acid. It can also be oxidized and conjugated to cholestenone. The source of the cholesterol is one egg yolk, which contains about 200 mg of…

  4. Intestinal cholesterol secretion : future clinical implications

    NARCIS (Netherlands)

    Jakulj, L.; Besseling, J.; Stroes, E. S. G.; Groen, A. K.

    2013-01-01

    Together with the liver, the intestine serves as a homeostatic organ in cholesterol metabolism. Recent evidence has substantiated the pivotal role of the intestine in reverse cholesterol transport (RCT). RCT is a fundamental antiatherogenic pathway, mediating the removal of cholesterol from tissues

  5. Public health aspects of serum cholesterol

    NARCIS (Netherlands)

    S. Houterman (Saskia)

    2001-01-01

    textabstractIn the beginning of this century Anitschkow and De Langen started pioneering work concerning the relation between cholesterol and coronary heart disease. Both showed that there was a possible relation between cholesterol in the diet, blood cholesterol levels and atherosclerosis. It took

  6. Cholesterol Screening: A Practical Guide to Implementation.

    Science.gov (United States)

    Kingery, Paul M.

    1995-01-01

    Dry-chemistry cholesterol analysis has made screening feasible in a variety of settings. The article provides practical tips for the implementation of mass cholesterol screening using a portable dry-chemistry analyzer and discusses issues involved in conducting effective cholesterol screening programs from start to finish. (SM)

  7. Non-cholesterol sterols and cholesterol metabolism in sitosterolemia.

    Science.gov (United States)

    Othman, Rgia A; Myrie, Semone B; Jones, Peter J H

    2013-12-01

    Sitosterolemia (STSL) is a rare autosomal recessive disease, manifested by extremely elevated plant sterols (PS) in plasma and tissue, leading to xanthoma and premature atherosclerotic disease. Therapeutic approaches include limiting PS intake, interrupting enterohepatic circulation of bile acid using bile acid binding resins such as cholestyramine, and/or ileal bypass, and inhibiting intestinal sterol absorption by ezetimibe (EZE). The objective of this review is to evaluate sterol metabolism in STSL and the impact of the currently available treatments on sterol trafficking in this disease. The role of PS in initiation of xanthomas and premature atherosclerosis is also discussed. Blocking sterols absorption with EZE has revolutionized STSL patient treatment as it reduces circulating levels of non-cholesterol sterols in STSL. However, none of the available treatments including EZE have normalized plasma PS concentrations. Future studies are needed to: (i) explore where cholesterol and non-cholesterol sterols accumulate, (ii) assess to what extent these sterols in tissues can be mobilized after blocking their absorption, and (iii) define the factors governing sterol flux.

  8. Measurement and theoretical analysis of the under-seal pressure of rotary engine apex seals. Rotary engine no apex seal no haiatsu no sokutei to kaiseki

    Energy Technology Data Exchange (ETDEWEB)

    Matsuura, K.; Terasaki, K. (Aoyama gakuin Univ., Tokyo (Japan). School of Science and Technology)

    1991-08-25

    A fundamental structure of an experimental rotary engine, which satisfies the conditions for the actual machine and can provide the phenomena on the rotor in multichannel electrical signals, and a method of taking out the signals have been developed. The pressures under two apex seals at medium speed and up to high load were measured to obtain some new knowledges. The pressure under the apex seal of 6mm thickness decreased considerably than that of the working chamber when the rotation speed increased with high loads. On the other hand, the decrease was little with the apex seal of 3mm thickness. The temperature of the gas flowing into the underseal chamber, temperature of the sealing groove wall, and the values of the pressures in the working chamber before and after apex seals measured by a pressure sensor provided in the housing were compared with the values calculated by theoretical analysis method for the underseal pressure to clarify the effect of each factor on the underseal pressure. 13 refs., 18 figs., 1 tab.

  9. Ocorrência simultânea de necrobiose lipoídica ulcerada e granuloma anular em um paciente: relato de caso Simultaneous occurrence of ulcerated necrobiosis lipoidica and granuloma annulare in a patient: case report

    Directory of Open Access Journals (Sweden)

    Fernanda Homem de Mello de Souza

    2011-10-01

    Full Text Available Ocorrência simultânea de granuloma anular e necrobiose lipoídica é rara. Sete casos dessa associação foram encontrados na literatura, sendo somente um de necrobiose lipoídica ulcerada. Relata-se caso de concomitância de granuloma anular e necrobiose lipoídica ulcerada, não associada a diabetes mellitus, em paciente masculino de 39 anos, com confirmação histopatológica.Simultaneous occurrence of granuloma annulare and necrobiosis lipoidica is quite rare. There are seven reported cases in the literature, but only one presenting ulcerated necrobiosis lipoidica. We report a 39-year-old male with histopathologically confirmed granuloma annulare and ulcerated necrobiosis lipoidica, without diabetes mellitus.

  10. Cholesterol Depletion from a Ceramide/Cholesterol Mixed Monolayer: A Brewster Angle Microscope Study

    KAUST Repository

    Mandal, Pritam

    2016-06-01

    Cholesterol is crucial to the mechanical properties of cell membranes that are important to cells’ behavior. Its depletion from the cell membranes could be dramatic. Among cyclodextrins (CDs), methyl beta cyclodextrin (MβCD) is the most efficient to deplete cholesterol (Chol) from biomembranes. Here, we focus on the depletion of cholesterol from a C16 ceramide/cholesterol (C16-Cer/Chol) mixed monolayer using MβCD. While the removal of cholesterol by MβCD depends on the cholesterol concentration in most mixed lipid monolayers, it does not depend very much on the concentration of cholesterol in C16-Cer/Chol monolayers. The surface pressure decay during depletion were described by a stretched exponential that suggested that the cholesterol molecules are unable to diffuse laterally and behave like static traps for the MβCD molecules. Cholesterol depletion causes morphology changes of domains but these disrupted monolayers domains seem to reform even when cholesterol level was low.

  11. D38-cholesterol as a Raman active probe for imaging intracellular cholesterol storage

    Science.gov (United States)

    Alfonso-García, Alba; Pfisterer, Simon G.; Riezman, Howard; Ikonen, Elina; Potma, Eric O.

    2016-06-01

    We generated a highly deuterated cholesterol analog (D38-cholesterol) and demonstrated its use for selective vibrational imaging of cholesterol storage in mammalian cells. D38-cholesterol produces detectable signals in stimulated Raman scattering (SRS) imaging, is rapidly taken up by cells, and is efficiently metabolized by acyl-CoA cholesterol acyltransferase to form cholesteryl esters. Using hyperspectral SRS imaging of D38-cholesterol, we visualized cholesterol storage in lipid droplets. We found that some lipid droplets accumulated preferentially unesterified D38-cholesterol, whereas others stored D38-cholesteryl esters. In steroidogenic cells, D38-cholesteryl esters and triacylglycerols were partitioned into distinct sets of lipid droplets. Thus, hyperspectral SRS imaging of D38-cholesterol demonstrates a heterogeneous incorporation of neutral lipid species, i.e., free cholesterol, cholesteryl esters, and triacylglycerols, between individual lipid droplets in a cell.

  12. Dietary cholesterol and plasma lipoprotein profiles: Randomized controlled trials

    Science.gov (United States)

    Early work suggested that dietary cholesterol increased plasma total cholesterol concentrations in humans. Given the relationship between elevated plasma cholesterol concentrations and cardiovascular disease risk, dietary guidelines have consistently recommended limiting food sources of cholesterol....

  13. Biliary cholesterol secretion : More than a simple ABC

    NARCIS (Netherlands)

    Dikkers, Arne; Tietge, Uwe J. F.

    2010-01-01

    Biliary cholesterol secretion is a process important for 2 major disease complexes, atherosclerotic cardiovascular disease and cholesterol gallstone disease With respect to cardiovascular disease, biliary cholesterol secretion is regarded as the final step for the elimination of cholesterol originat

  14. Intestinal Farnesoid X Receptor Controls Transintestinal Cholesterol Excretion in Mice

    NARCIS (Netherlands)

    de Boer, Jan Freark; Schonewille, Marleen; Boesjes, Marije; Wolters, Henk; Bloks, Vincent W; Bos, Trijnie; van Dijk, Theo H; Jurdzinski, Angelika; Boverhof, Renze; Wolters, Justina C; Kuivenhoven, Jan A; van Deursen, Jan M; Oude Elferink, Ronald P J; Moschetta, Antonio; Kremoser, Claus; Verkade, Henkjan J; Kuipers, Folkert; Groen, Albert K

    2017-01-01

    BACKGROUND & AIMS: The role of the intestine in the maintenance of cholesterol homeostasis is increasingly recognized. Fecal excretion of cholesterol is the last step in the atheroprotective reverse cholesterol transport pathway, to which biliary and transintestinal cholesterol excretion (TICE) cont

  15. Host-directed therapy targeting the Mycobacterium tuberculosis granuloma: a review.

    Science.gov (United States)

    Kiran, Dilara; Podell, Brendan K; Chambers, Mark; Basaraba, Randall J

    2016-03-01

    Infection by the intracellular bacterial pathogen Mycobacterium tuberculosis (Mtb) is a major cause of morbidity and mortality worldwide. Slow progress has been made in lessening the impact of tuberculosis (TB) on human health, especially in parts of the world where Mtb is endemic. Due to the complexity of TB disease, there is still an urgent need to improve diagnosis, prevention, and treatment strategies to control global spread of disease. Active research targeting avenues to prevent infection or transmission through vaccination, to diagnose asymptomatic carriers of Mtb, and to improve antimicrobial drug treatment responses is ongoing. However, this research is hampered by a relatively poor understanding of the pathogenesis of early infection and the factors that contribute to host susceptibility, protection, and the development of active disease. There is increasing interest in the development of adjunctive therapy that will aid the host in responding to Mtb infection appropriately thereby improving the effectiveness of current and future drug treatments. In this review, we summarize what is known about the host response to Mtb infection in humans and animal models and highlight potential therapeutic targets involved in TB granuloma formation and resolution. Strategies designed to shift the balance of TB granuloma formation toward protective rather than destructive processes are discussed based on our current knowledge. These therapeutic strategies are based on the assumption that granuloma formation, although thought to prevent the spread of the tubercle bacillus within and between individuals contributes to manifestations of active TB disease in human patients when left unchecked. This effect of granuloma formation favors the spread of infection and impairs antimicrobial drug treatment. By gaining a better understanding of the mechanisms by which Mtb infection contributes to irreversible tissue damage, down regulates protective immune responses, and delays

  16. Epididymis cholesterol homeostasis and sperm fertilizing ability

    Institute of Scientific and Technical Information of China (English)

    Fabrice Saez; Aurélia Ouvrier; Jo(e)l R Drevet

    2011-01-01

    Cholesterol, being the starting point of steroid hormone synthesis, is a long known modulator of both female and male reproductive physiology especially at the level of the gonads and the impact cholesterol has on gametogenesis. Less is known about the effects cholesterol homeostasis may have on postgonadic reproductive functions. Lately, several data have been reported showing how imbalanced cholesterol levels may particularly affect the post-testicular events of sperm maturation that lead to fully fertile male gametes. This review will focus on that aspect and essentially centers on how cholesterol is important for the physiology of the mammalian epididymis and spermatozoa.

  17. Analysis of Cholesterol Trafficking with Fluorescent Probes

    DEFF Research Database (Denmark)

    Maxfield, Frederick R.; Wustner, Daniel

    2012-01-01

    Cholesterol plays an important role in determining the biophysical properties of biological membranes, and its concentration is tightly controlled by homeostatic processes. The intracellular transport of cholesterol among organelles is a key part of the homeostatic mechanism, but sterol transport...... that can bind to cholesterol to reveal its distribution in cells. We also discuss the use of intrinsically fluorescent sterols that closely mimic cholesterol, as well as some minimally modified fluorophore-labeled sterols. Methods for imaging these sterols by conventional fluorescence microscopy...... and by multiphoton microscopy are described. Some label-free methods for imaging cholesterol itself are also discussed briefly....

  18. Anti-inflammatory and anti-granuloma activity of Berberis aristata DC. in experimental models of inflammation

    Directory of Open Access Journals (Sweden)

    Rohit Kumar

    2016-01-01

    Conclusion: The result of the present study thus demonstrates the anti-inflammatory and anti-granuloma activity of BAHE which may be attributed to its inhibitory activity on macrophage-derived cytokine and mediators.

  19. Peptide mediators of cholesterol efflux

    Science.gov (United States)

    Bielicki, John K.; Johansson, Jan

    2013-04-09

    The present invention provides a family of non-naturally occurring polypeptides having cholesterol efflux activity that parallels that of full-length apolipoproteins (e.g., Apo AI and Apo E), and having high selectivity for ABAC1 that parallels that of full-length apolipoproteins. The invention also provides compositions comprising such polypeptides, methods of identifying, screening and synthesizing such polypeptides, and methods of treating, preventing or diagnosing diseases and disorders associated with dyslipidemia, hypercholesterolemia and inflammation.

  20. Tenon's capsule granuloma at the donor site after conjunctival grafting: short report Granuloma da cápsula de Tenon em área doadora de retalho conjuntival: relato curto

    Directory of Open Access Journals (Sweden)

    Patrícia Ioschpe Gus

    2003-06-01

    Full Text Available PURPOSE: To describe a rare complication at the donor site of conjunctival transplantation. METHODS: The authors report the clinical, surgical, postoperative and histologic aspects of a Tenon's granuloma that followed an uneventful pterygium excision with conjunctival transplantation. RESULTS: Histology identified an hemangiomatous-like structure with some areas of foreign body granuloma overlying necrotic epithelial cels, easily excised surgically. CONCLUSIONS: Pyogenic granuloma is an inadequate term to describe an inflammatory nonsuppurative reaction that may follow uneventful conjunctival surgery in susceptible individuals.OBJETIVO: Descrever complicação rara em área doadora de retalho conjuntival. MÉTODOS: Os autores descrevem os aspectos clínico, cirúrgico, pós-operatório e histológico de granuloma da cápsula de Tenon em área doadora de conjuntiva que seguiu cirurgia não complicada de excisão de pterígio com transplante conjuntival. RESULTADOS: O exame histológico evidenciou estrutura tipo hemangiomatosa com áreas de granuloma de corpo estranho envolvendo células epiteliais necróticas. CONCLUSÃO: Granuloma piogênico é nomenclatura inadequada para descrever reação inflamatória não supurativa de fácil excisão cirúrgica que pode seguir a retirada de conjuntiva em pacientes suscetíveis.

  1. Evaluating computational models of cholesterol metabolism.

    Science.gov (United States)

    Paalvast, Yared; Kuivenhoven, Jan Albert; Groen, Albert K

    2015-10-01

    Regulation of cholesterol homeostasis has been studied extensively during the last decades. Many of the metabolic pathways involved have been discovered. Yet important gaps in our knowledge remain. For example, knowledge on intracellular cholesterol traffic and its relation to the regulation of cholesterol synthesis and plasma cholesterol levels is incomplete. One way of addressing the remaining questions is by making use of computational models. Here, we critically evaluate existing computational models of cholesterol metabolism making use of ordinary differential equations and addressed whether they used assumptions and make predictions in line with current knowledge on cholesterol homeostasis. Having studied the results described by the authors, we have also tested their models. This was done primarily by testing the effect of statin treatment in each model. Ten out of eleven models tested have made assumptions in line with current knowledge of cholesterol metabolism. Three out of the ten remaining models made correct predictions, i.e. predicting a decrease in plasma total and LDL cholesterol or increased uptake of LDL upon treatment upon the use of statins. In conclusion, few models on cholesterol metabolism are able to pass a functional test. Apparently most models have not undergone the critical iterative systems biology cycle of validation. We expect modeling of cholesterol metabolism to go through many more model topologies and iterative cycles and welcome the increased understanding of cholesterol metabolism these are likely to bring.

  2. Intracellular transport of cholesterol in mammalian cells

    Energy Technology Data Exchange (ETDEWEB)

    Brasaemle, D.L.

    1989-01-01

    The erythrocyte was selected as a simple cell for the study of transbilayer movement of cholesterol. Cholesterol oxidase was used to measure the distribution of ({sup 3}H)cholesterol across the erythrocyte membrane. Cholesterol oxidase was also used to estimate the rate of transport of low density lipoprotein (LDL) cholesterol to the plasma membrane of cultured Chinese hamster ovary (CHO) fibroblasts; the half-time of this process was 42 minutes. The rate of transport of LDL cholesterol to the plasma membrane was confirmed by a second procedure using amphotericin B. Amphotericin B was also used to estimate the rate of transport of endogenously synthesized cholesterol to the plasma membrane of CHO cells. New methodology was developed including improvements of the previously published cholesterol oxidase assay for plasma membrane cholesterol. A new method for detecting transport of cholesterol to the plasma membrane in cultured cells was developed using amphotericin B. Preliminary studies investigated the use of fluorescent polyenes, pimaricin and etruscomycin, as probes for plasma membrane cholesterol in transport studies. Finally, a modification of a previously published cell staining protocol yielded a simple, quantitative assay for cell growth.

  3. Cholesterol metabolism and homeostasis in the brain.

    Science.gov (United States)

    Zhang, Juan; Liu, Qiang

    2015-04-01

    Cholesterol is an essential component for neuronal physiology not only during development stage but also in the adult life. Cholesterol metabolism in brain is independent from that in peripheral tissues due to blood-brain barrier. The content of cholesterol in brain must be accurately maintained in order to keep brain function well. Defects in brain cholesterol metabolism has been shown to be implicated in neurodegenerative diseases, such as Alzheimer's disease (AD), Huntington's disease (HD), Parkinson's disease (PD), and some cognitive deficits typical of the old age. The brain contains large amount of cholesterol, but the cholesterol metabolism and its complex homeostasis regulation are currently poorly understood. This review will seek to integrate current knowledge about the brain cholesterol metabolism with molecular mechanisms.

  4. A rare presentation of subcutaneous granuloma annulare in an adult patient; A case report

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    Waleed Alajroush

    2016-07-01

    Full Text Available We are reporting a 33-year old woman with multiple skin-colored, firm, non-tender nodules of varying sizes (ranging between 1 and 1.5 cm, with limited mobility and normal overlying skin. They were distributed mainly on the palmer side of the fingers. History and laboratory examination indicated lack of systemic diseases such as diabetes, rheumatoid arthritis, and tuberculosis. Histopathologic examination confirmed the subcutaneous granuloma annulare (SGA diagnosis by showing a normal epidermis with palisading granulomas (histocytes and giant cells surrounding small areas of connective tissue degeneration (central necrobiosis and mucin accumulation in the reticular dermis and subcutaneous tissues. The patient responded well to two-session course of intra-lesional steroid injections. SGA should be considered by dermatologists in the differential diagnosis of subcutaneous nodules even without concomitant systemic disease and with rare presentation.

  5. Infantile multiple large pyogenic granuloma on burned skin. Case report and review of literature*

    Science.gov (United States)

    Dastgheib, Ladan; Maghami, Zohreh; Aslani, Fatemeh Sari

    2016-01-01

    Pyogenic granuloma (PG) is a benign vascular lesion of the skin and mucous membranes, presenting as a solitary, red, pedunculated papule that bleeds easily and which appears to be a reactive vascular proliferation to minor injury. These lesions are more common in children and are mostly seen in exposed sites. Multiple disseminated PG is a rare condition. This report describes an infant with multiple, disseminated, pyogenic granulomas following burns from boiling milk. We reviewed literature published in English and found 9 cases. Six cases were provoked by hot milk, 2 by hot water, while the cause of the other case is unknown. Angiogiogenetic activity in milk may explain PG development in these patients. PMID:27192522

  6. Pyogenic granuloma associated with bone loss in an eight year old child: A case report

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    Shenoy S

    2006-01-01

    Full Text Available Soft tissue enlargements of the oral cavity often present a diagnostic challenge because a diverse group of pathologic processes can produce such lesions. An enlargement may represent a variation of normal anatomic structures, inflammation, cysts, developmental anomalies and neoplasm. Within these lesions is a group of reactive hyperplasias, which develop in response to a chronic, recurring tissue injury that stimulates an exuberant or excessive tissue repair response. The pyogenic granuloma is a reactive enlargement that is an inflammatory response to local irritation such as calculus, a fractured tooth, rough dental restoration and foreign materials. This article aims to present a case of pyogenic granuloma in 8 year old child patient associated with resorption of bone in relation to the tooth.

  7. Histochemical and polarization microscopic study of two cases of vegetable/pulse granuloma

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    Manjunatha B

    2008-01-01

    Full Text Available Vegetable granuloma (VG or pulse granuloma (PG results from the implantation of food particles of plant or vegetable origin. It is usually seen in the periapical or in the sulcus areas. These lesions have been described as a distinct entity and classified into central and peripheral lesions according to the location. Central lesions are asymptomatic, whereas peripheral lesions present as painless sub-mucosal swellings. Many authors have postulated that food particles in VG or PG get implanted and are rapidly digested, and sometimes partly get altered by host responses. The cellulose part of plant foods being indigestible persists in the form of hyaline material, whereas the starch matter gets digested. This cellulose moiety invokes chronic granulomatous response.

  8. A case of pulmonary Serratia marcescens granuloma radiologically mimicking metastatic malignancy and tuberculosis infection.

    Science.gov (United States)

    Das, Joyutpal; Layton, Benjamin; Lamb, Harriet; Sinnott, Nicola; Leahy, Bernard C

    2015-11-01

    Serratia marcescens is a saprophytic gram-negative bacillus capable of causing a wide range of infections. A 57-year-old female was admitted to our hospital for four weeks with community acquired pneumonia. A chest x-ray, six weeks after discharge, demonstrated multiple, bilateral 'cannon ball'-like opacities and mediastinal lymphadenopathy which were highly suspicious of disseminated malignancy or tuberculosis. The only symptom that this patient had was a productive cough. She had multiple commodities, but no specific immunodeficiency disorder. Interestingly, her sputum and bronchial washing samples grew S. marcescens. The computed tomography-guided lung biopsy demonstrated necrotic granulomatous changes. There was no pathological evidence of tuberculosis or fungal infection, malignancy or vasculitis. There are only a handful of reported cases of Serratia granulomas. Thus, we are reporting a rare instance of pulmonary Serratia marcescens granuloma radiologically mimicking metastatic malignancy and tuberculosis infection.

  9. A Review and Report of Peripheral Giant Cell Granuloma in a 4-Year-Old Child

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    Afsaneh Nekouei

    2016-01-01

    Full Text Available Peripheral giant cell granuloma is a common benign and reactive gingival epulis in oral cavity. It is often difficult to make a clinical diagnosis; thereby definitive diagnosis depends on histopathologic features. We report a case of a 4-year-old Caucasian boy presenting with a five-month history a 20 × 15 × 12 mm pedunculated, lobular soft tissue mass of the left anterior maxilla gingiva which was misdiagnosed and maltreated before his referral. An excisional biopsy of the lesion followed by histopathologic examination of the biopsy specimen revealed distinctive features of peripheral giant cell granuloma. Early detection and excision of this hyperplastic nodule especially in children are important to minimize potential dentoalveolar complications.

  10. GRANULOMA TELANGIECTÁSICO BUCAL. TRATAMIENTO QUIRÚRGICO Y PERIODONTAL

    OpenAIRE

    Sánchez Franco, Karina Milagros; Universidad Nacional Mayor de San Marcos

    2015-01-01

    El granuloma telangiectásico también llamado Granuloma Piógeno, es una lesión tumoral benigna más común de todas las lesiones que afectan la mucosa y el tejido gingival de la cavidad oral. Se presenta como una reacción del tejido conectivo a estímulos, irritación local por placa dental, procesos infecciosos y factores hormonales; así como, por el inadecuado uso de elementos de higiene bucal que generan micro traumas. En el Perú es una patología muy frecuente entre los 30-60 años; que afecta e...

  11. Eosinophilic granuloma associated with a 16q22 chromosomal defect of cutaneous T lymphocytes.

    Science.gov (United States)

    Bisballe, S; Thestrup-Pedersen, K; Bjerring, P; Jensen, J J; Ottosen, P D; Kaltoft, K

    1984-01-01

    A 61-year-old woman presented with circumscribed eczematous eruptions with maceration, erosions and patchy infiltration in the perineum and inframammary regions. A diagnosis of eosinophilic granuloma (cutaneous histiocytosis X) was established. T lymphocytes from a skin biopsy were grown in vitro for three weeks after which chromosomal studies revealed a break or gap at chromosome 16q22 in 15% of the lymphocytes. The addition of alpha-interferon increased the percentage of affected cells to 28%. T lymphocytes from the patient's blood did not show the defect. The biological significance of the chromosomal defect is uncertain. It has been described before in healthy persons, malignant lymphoma, cold urticaria and IgA deficiency, and mental retardation. It has not been seen in patients with eosinophilic granuloma.

  12. Four whole-istic aspects of schistosome granuloma biology: fractal arrangement, internal regulation, autopoietic component and closure

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    HL Lenzi

    2006-10-01

    Full Text Available This paper centers on some whole-istic organizational and functional aspects of hepatic Schistosoma mansoni granuloma, which is an extremely complex system. First, it structurally develops a collagenic topology, originated bidirectionally from an inward and outward assembly of growth units. Inward growth appears to be originated from myofibroblasts derived from small portal vessel around intravascular entrapped eggs, while outward growth arises from hepatic stellate cells. The auto-assembly of the growth units defines the three-dimensional scaffold of the schistosome granulomas. The granuloma surface irregularity and its border presented fractal dimension equal to 1.58. Second, it is internally regulated by intricate networks of immuneneuroendocrine stimuli orchestrated by leptin and leptin receptors, substance P and Vasoactive intestinal peptide. Third, it can reach the population of ± 40,000 cells and presents an autopoietic component evidenced by internal proliferation (Ki-67+ Cells, and by expression of c-Kit+ Cells, leptin and leptin receptor (Ob-R, granulocyte-colony stimulating factor (G-CSF-R, and erythropoietin (Epo-R receptors. Fourth, the granulomas cells are intimately connected by pan-cadherins, occludin and connexin-43, building a state of closing (granuloma closure. In conclusion, the granuloma is characterized by transitory stages in such a way that its organized structure emerges as a global property which is greater than the sum of actions of its individual cells and extracellular matrix components.

  13. Craniocerebral vegetal foreign body granuloma: a case report and review of literature

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    CAO Yi-dan

    2013-09-01

    Full Text Available Objective Craniocerebral vegetal foreign body granuloma is rare lesion which is very difficult to diagnose clinically, and is easy to be misdiagnosed. This article aims to reveal the clinical manifestations and histopathological features of it. Methods A case of cerebral vegetal foreign body granuloma was reported focusing on the following aspects: clinical manifestations, histopathological features and immunophenotype and the relevant literature was reviewed. Results A 23-year-old male patient presented with paroxysmal stiffness accompanied by convulsion of extremities and no response for calling for 7 years. Cranial MRI scan demonstrated a small nodular mixed signal shadow about 1.60 cm in length located in the frontal cortex under the anterior horn of the left compartment with gliosis near frontal lobe. A resection was performed, and a lesion (about 3 cm × 2 cm was found in the bottom of the left frontal lobe. The lesion was greyish brown, tenacious, irregular bordered, partly calcified and with rich blood supply. There was no tumor or parasite but proliferation of fibrous tissue, hyaline degeneration, calcification, infiltration of lymphocytes and plasma cells in the granuloma lesion under microscope. The immunohistochemical staining showed the lesion was positive for vimentin (Vim and CD68, while negative for glial fibrillary acidic protein (GFAP, S-100 protein (S-100 and epithelial membrane antigen (EMA. Conclusion Clinical manifestations of craniocerebral vegetal foreign body granuloma are various according to the occurrence in different parts. Besides, its imaging features are various depending on the kind of foreign body and the persistent duration. However, histopathological observation and immunohistochemical staining facilitate its diagnosis and identification from tumor and parasitic disease. Furthermore, the type of plant can also be distinguished roughly.

  14. Granuloma anular asociado a linfoma no Hodgkim difuso de células B grandes

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    Rafael Alejandro Gómez Baute

    2011-08-01

    Full Text Available Se presenta el caso de un paciente de 55 años con antecedentes de ser hipertenso controlado, atendido en servicio de hematología por adenopatías de características linfomatosas distribuidas en cadenas ganglionares, axilares, inguinales y epitrocleares distribuidas de forma bilateral. Los exámenes permitieron arribar al diagnóstico de un linfoma no Hogdkin difuso de células B grandes y de un granuloma anular.

  15. Bacillus calmette-guerin infection in NADPH oxidase deficiency: defective mycobacterial sequestration and granuloma formation.

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    Christine Deffert

    2014-09-01

    Full Text Available Patients with chronic granulomatous disease (CGD lack generation of reactive oxygen species (ROS through the phagocyte NADPH oxidase NOX2. CGD is an immune deficiency that leads to frequent infections with certain pathogens; this is well documented for S. aureus and A. fumigatus, but less clear for mycobacteria. We therefore performed an extensive literature search which yielded 297 cases of CGD patients with mycobacterial infections; M. bovis BCG was most commonly described (74%. The relationship between NOX2 deficiency and BCG infection however has never been studied in a mouse model. We therefore investigated BCG infection in three different mouse models of CGD: Ncf1 mutants in two different genetic backgrounds and Cybb knock-out mice. In addition, we investigated a macrophage-specific rescue (transgenic expression of Ncf1 under the control of the CD68 promoter. Wild-type mice did not develop severe disease upon BCG injection. In contrast, all three types of CGD mice were highly susceptible to BCG, as witnessed by a severe weight loss, development of hemorrhagic pneumonia, and a high mortality (∼ 50%. Rescue of NOX2 activity in macrophages restored BCG resistance, similar as seen in wild-type mice. Granulomas from mycobacteria-infected wild-type mice generated ROS, while granulomas from CGD mice did not. Bacterial load in CGD mice was only moderately increased, suggesting that it was not crucial for the observed phenotype. CGD mice responded with massively enhanced cytokine release (TNF-α, IFN-γ, IL-17 and IL-12 early after BCG infection, which might account for severity of the disease. Finally, in wild-type mice, macrophages formed clusters and restricted mycobacteria to granulomas, while macrophages and mycobacteria were diffusely distributed in lung tissue from CGD mice. Our results demonstrate that lack of the NADPH oxidase leads to a markedly increased severity of BCG infection through mechanisms including increased cytokine

  16. Living history in current orthopaedic hip surgery: intrapelvic teflon granuloma after total hip replacement.

    Science.gov (United States)

    Gheorghiu, Daniel; Peter, Viju; Lynch, Martin

    2010-02-01

    The teflon hip arthroplasty design was used by Sir John Charnley in the early 60's but was taken off the market due to high complication rates. A case is reported of an intrapelvic granuloma after total hip arthroplasty following the use of a teflon socket. This appears to be the last surviving patient treated by Sir John Charnley using a Teflon hip socket design.

  17. Chest wall granuloma associated with BCG vaccination presenting as hot abscess in an immunocompetent infant

    OpenAIRE

    Lee, Hyun Seung; Seo, Kyung Jin; Kim, Jae Jun

    2015-01-01

    Bacillus-Calmette-Gue´rin (BCG) vaccine is a live attenuated vaccine to prevent tuberculosis by cell mediated immune response and is routinely administered early after birth. Although it is considered to be a very safe vaccine, sometimes a variety of complications may develop. Herein we describe a clinically unusual case of chest wall granuloma considered to be induced by BCG, presenting as hot abscess, and developed 7 months after BCG vaccination in an immunocompetent infant. The diagnosis w...

  18. Forma tumoral da esquistossomose mansoni cerebelar: relato de caso e medida dos granulomas The tumoral form of cerebellar schistosomiasis: case report and measure of granulomas

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    Pedro Raso

    2006-06-01

    Full Text Available Caso raro de forma tumoral da esquistossomose mansoni cerebelar diagnosticada pela biópsia, em um paciente de 15 anos, que apresentou sinais e sintomas neurológicos 60 dias antes da cirurgia. A tomografia computadorizada revelou lesão expansiva, hiperdensa, localizada no cerebelo, sugestiva de glioma. O exame histopatológico mostrou numerosos ovos de S. mansoni envolvidos por reação inflamatória granulomatosa na fase necrótico-exsudativa, confluentes, localizados principalmente na camada interna, granular, do cerebelo, formando pseudotumor no verme cerebelar e hemorragia recente na ponte. Foram medidas as áreas dos granulomas.An unusual case of the tumoral form of cerebellar Schistosomiasis mansoni, in a 15 year-old male diagnosed by biopsy, with neurological signs and symptoms 60 days prior to surgery. Computerized tomography show a hyperdense expanding lesion located in cerebellum, suggesting glioma. Histopathological examination showed numerous S. mansoni ova involved by granulomatous inflammation in necrotic-exudative phase, located mainly in the internal, granular layer of the cerebellum, creating a pseudotumor in the cerebellar vermis and a recent hemorrhage in the trunk. The areas of granulomas were measured.

  19. Comparative morphology of dendritic arbors in populations of Purkinje cells in mouse sulcus and apex.

    Science.gov (United States)

    Nedelescu, Hermina; Abdelhack, Mohamed

    2013-01-01

    Foliation divides the mammalian cerebellum into structurally distinct subdivisions, including the concave sulcus and the convex apex. Purkinje cell (PC) dendritic morphology varies between subdivisions and changes significantly ontogenetically. Since dendritic morphology both enables and limits sensory-motor circuit function, it is important to understand how neuronal architectures differ between brain regions. This study employed quantitative confocal microcopy to reconstruct dendritic arbors of cerebellar PCs expressing green fluorescent protein and compared arbor morphology between PCs of sulcus and apex in young and old mice. Arbors were digitized from high z-resolution (0.25 µm) image stacks using an adaptation of Neurolucida's (MBF Bioscience) continuous contour tracing tool, designed for drawing neuronal somata. Reconstructed morphologies reveal that dendritic arbors of sulcus and apex exhibit profound differences. In sulcus, 72% of the young PC population possesses two primary dendrites, whereas in apex, only 28% do. Spatial constraints in the young sulcus cause significantly more dendritic arbor overlap than in young apex, a distinction that disappears in adulthood. However, adult sulcus PC arbors develop a greater number of branch crossings. These results suggest developmental neuronal plasticity that enables cerebellar PCs to attain correct functional adult architecture under different spatial constraints.

  20. Accuracy of three electronic apex locators in the presence of different irrigating solutions

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    Ana Laura Pion Carvalho

    2010-12-01

    Full Text Available The present study compared the accuracy of three electronic apex locators (EALs - Elements Diagnostic®, Root ZX® and Apex DSP® - in the presence of different irrigating solutions (0.9% saline solution and 1% sodium hypochlorite. The electronic measurements were carried out by three examiners, using twenty extracted human permanent maxillary central incisors. A size 10 K file was introduced into the root canals until reaching the 0.0 mark, and was subsequently retracted to the 1.0 mark. The gold standard (GS measurement was obtained by combining visual and radiographic methods, and was set 1 mm short of the apical foramen. Electronic length values closer to the GS (± 0.5 mm were considered as accurate measures. Intraclass correlation coefficients (ICCs were used to verify inter-examiner agreement. The comparison among the EALs was performed using the McNemar and Kruskal-Wallis tests (p 0.05, independent of the irrigating solutions used. The measurements taken with these two EALs were more accurate than those taken with Apex DSP®, regardless of the irrigating solution used (p < 0.05. It was concluded that Elements Diagnostic® and Root ZX® apex locators are able to locate the cementum-dentine junction more precisely than Apex DSP®. The presence of irrigating solutions does not interfere with the performance of the EALs.

  1. First experimental evaluation of cardiac apex rotation with an epicardial coriolis force sensor.

    Science.gov (United States)

    Marcelli, Emanuela; Plicchi, Gianni; Cercenelli, Laura; Bortolami, Filippo

    2005-01-01

    Cardiac apex rotation, quantified by sophisticated techniques (radiopaque markers and tagged magnetic resonance), has been shown to provide a sensitive index of left ventricle (LV) dynamics. The authors describe the first experimental assessment of cardiac apex rotation using a gyroscopic sensor based on Coriolis force, epicardially glued on the apex. Dynamics of apex rotation were evaluated in a sheep at baseline, after a positive inotropic drug infusion, and after impairment of cardiac function induced by coronary ligation. To evaluate the efficacy of the sensor to monitor cardiac function, results were compared to contractility variations expressed by the maximum value of the first derivative of LV pressure (LVdP/dtMAX). After inotropic drug infusion, a parallel increasing trend resulted for LVdP/dtMAX, for the maximum value of angular velocity measured by the sensor, and for apex rotation angle derived from velocity signal (+146%, +155%, and +11% from baseline, respectively), whereas a decreasing trend of all three parameters resulted after coronary ligation (-35%, -31%, and -65%). The twist pattern also was altered from baseline. These initial results suggest that the use of an implantable rotation sensor based on Coriolis force can be an efficient and effective tool to assess LV torsional deformation both in normal and failing hearts.

  2. FT-like proteins induce transposon silencing in the shoot apex during floral induction in rice.

    Science.gov (United States)

    Tamaki, Shojiro; Tsuji, Hiroyuki; Matsumoto, Ayana; Fujita, Akiko; Shimatani, Zenpei; Terada, Rie; Sakamoto, Tomoaki; Kurata, Tetsuya; Shimamoto, Ko

    2015-02-24

    Floral induction is a crucial developmental step in higher plants. Florigen, a mobile floral activator that is synthesized in the leaf and transported to the shoot apex, was recently identified as a protein encoded by FLOWERING LOCUS T (FT) and its orthologs; the rice florigen is Heading date 3a (Hd3a) protein. The 14-3-3 proteins mediate the interaction of Hd3a with the transcription factor OsFD1 to form a ternary structure called the florigen activation complex on the promoter of OsMADS15, a rice APETALA1 ortholog. However, crucial information, including the spatiotemporal overlap among FT-like proteins and the components of florigen activation complex and downstream genes, remains unclear. Here, we confirm that Hd3a coexists, in the same regions of the rice shoot apex, with the other components of the florigen activation complex and its transcriptional targets. Unexpectedly, however, RNA-sequencing analysis of shoot apex from wild-type and RNA-interference plants depleted of florigen activity revealed that 4,379 transposable elements (TEs; 58% of all classifiable rice TEs) were expressed collectively in the vegetative and reproductive shoot apex. Furthermore, in the reproductive shoot apex, 214 TEs were silenced by florigen. Our results suggest a link between floral induction and regulation of TEs.

  3. Immunomodulation of Homeopathic Thymulin 5CH in a BCG-Induced Granuloma Model

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    Leoni Villano Bonamin

    2013-01-01

    Full Text Available The present study analyzed the immune modulation mechanisms of thymulin 5CH in a granuloma experimental model. Male adult Balb/c mice were inoculated with BCG into the footpad to induce granuloma, which was quantitatively evaluated. The phenotypic characterization of phagocyte, T- and B-lymphocyte populations in the peritoneum, and local lymph node was done by flow cytometry. During all experimental periods, thymulin 5CH and vehicle (control were given ad libitum to mice, diluted into the drinking water (1.6×10−17 M. After 7 days from inoculation, thymulin-treated mice presented reduction in the number of epithelioid cytokeratine-positive cells (P=0.0001 in the lesion, in relation to young phagocytes. After 21 days, the differentiation of B1 peritoneal stem cells into phagocytes reached the peak, being higher in thymulin-treated mice (P=0.0001. Simultaneously, the score of infected phagocytes in the lesion decreased (P=0.001, and the number of B1-derived phagocytes, CD4+ and CD8+ T lymphocytes in the local lymph node increased in relation to control (P=0.0001. No difference was seen on the CD25+ Treg cells. The results show that thymulin 5CH treatment is able to improve the granuloma inflammatory process and the infection remission, by modulating local and systemic phagocyte differentiation.

  4. SURGICAL TREATMENT AND RECONSTRUCTION FOR CENTRAL GIANT CELL GRANULOMA OF MANDIBLE - case report and literature review.

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    Elitsa G. Deliverska

    2013-11-01

    Full Text Available Introduction: Central giant cell granuloma (CGCG is a benign aggressive destructive osteolytic lesion of osteoclastic origin. The central giant cell granuloma is often found in the mandible, anterior to the first molars. It most commonly occurs in patients under the age of 30, with a clear female prevalencePurpose: To present a case of CGCG of the lower jaw in Department of Oral and maxillofacial surgery, University Hospital "St. Anna". Although en bloc resection provides the lowest recurrence rate, only a few single case reports describe the use of this technique followed by reconstruction with autogenous bone grafts.Material and methods: The medical history of a 28 years patient with a large central giant cell granuloma in the mandible. Biopsy specimen taken from the lesion showed CGCG followed by curettage with peripheral ostectomy with preservation of the continuity of the mandible.Result: At the 1-year clinical and radiological follow up there was no sign of recurrence. Conclusion: After complete healing of the graft, prosthetic rehabilitation with implants will be perfomed. This allows the best functional and aesthetic results.

  5. Granuloma telangiectásico en cavidad oral: Reporte de un caso clínico

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    A.J. Díaz Caballero

    Full Text Available El granuloma telangiectásico es un tumor benigno que se presenta en cavidad oral, frecuentemente observado en la zona anterior de la cavidad oral y en encía, sangrante y de crecimiento rápido, asociado a la presencia de irritantes locales. Su tratamiento es la escisión quirúrgica, aunque puede presentar recidiva. Dentro de sus diagnósticos diferenciales encontramos el granuloma periférico de células gigantes, hemangioma capilar adquirido, carcinoma epidermoide exofítico, carcinoma metastásico, sarcoma de Kaposi, fibroma periférico, tumores mesenquimales benignos y malignos. Se presenta caso clínico de paciente femenino de 52 años de edad que acudió a consulta odontológica en la facultad de Odontología de la Universidad de Cartagena por presentar dos lesiones tumorales que sangraban con facilidad ubicadas en encía papilar y espacio edéntulo relacionadas a prótesis parcial fija de tres unidades entre órganos dentarios 11-13. Se le realizó la escisión quirúrgica de la lesión y se envió a patología donde se confirmó histopatológicamente diagnóstico de granuloma telangiectásico.

  6. Hepatic granulomas: experience over a 10-year period in the West of Scotland.

    Science.gov (United States)

    Cunnigham, D; Mills, P R; Quigley, E M; Patrick, R S; Watkinson, G; MacKenzie, J F; Russell, R I

    1982-01-01

    A survey of all patients in whom liver biopsy showed epithelioid granulomas was undertaken at two major teaching hospitals in Glasgow for the period 1970-1979. Seventy-seven patients with hepatic granulomas were studied retrospectively. In 53 cases (69 per cent) a clear-cut clinical diagnosis was established, which included sarcoidosis (eight cases), tuberculosis (eight), extrahepatic biliary obstruction (seven), primary liver diseases (11), neoplasm (six), bacterial infection (five) and miscellaneous (eight). In 24 patients (31 percent) no cause was found. Seventeen patients from this idiopathic group were studied prospectively and single examples of the following conditions were subsequently diagnosed; pulmonary tuberculosis, primary biliary cirrhosis, ulcerative colitis, adenocarcinoma of rectum, primary hepatocellular carcinoma, alpha-one antitrypsin deficiency and pulmonary fibrosis, sarcoidosis, pulmonary fibrosis alone, gallstones, rheumatic heart disease, unexplained hepatosplenomegaly and one death from mesenteric artery thrombosis. Only six cases remained truly idiopathic. Three of these patients recovered and in two liver biopsy became normal. The other three have persistent granulomas associated with continuing illness.

  7. Thalidomide induces granuloma differentiation in sarcoid skin lesions associated with disease improvement.

    Science.gov (United States)

    Oliver, Stephen J; Kikuchi, Toyoko; Krueger, James G; Kaplan, Gilla

    2002-03-01

    Sarcoidosis, a chronic granulomatous disease of unknown etiology, is treated with immune suppressive drugs such as corticosteroids. Sarcoidosis patients have been reported to benefit clinically from treatment with thalidomide. We administered thalidomide for 16 weeks to eight patients with chronic skin sarcoidosis and evaluated the drug's effects before and with treatment. After thalidomide treatment, all skin biopsies showed decreases in granuloma size and reduction in epidermal thickness. We also observed extensive T cell recruitment into the granulomas, the appearance of multinucleated giant cells, and increased numbers of dermal Langerhans cells (CD1a(+)) and mature dendritic cells (CD83(+) or DC-LAMP(+)). Plasma IL-12 levels increased and remained elevated during the treatment period. We noted increased HLA-DR expression on peripheral blood lymphocytes and a corresponding drop in the naive T cell marker CD45RA. Our data suggest that thalidomide treatment of sarcoidosis results in granuloma differentiation to a Th1-type cellular immune response usually associated with protective immunity to tuberculosis and tuberculoid leprosy.

  8. Modeling Mycobacterium tuberculosis early granuloma formation in experimental human lung tissue

    Directory of Open Access Journals (Sweden)

    Venkata Ramanarao Parasa

    2014-02-01

    Full Text Available The widely used animal models for tuberculosis (TB display fundamental differences from human TB. Therefore, a validated model that recapitulates human lung TB is attractive for TB research. Here, we describe a unique method for establishment of TB infection in an experimental human lung tissue model. The model is based on cell lines derived from human lungs and primary macrophages from peripheral blood, and displays characteristics of human lung tissue, including evenly integrated macrophages throughout the epithelium, production of extracellular matrix, stratified epithelia and mucus secretion. Establishment of experimental infection in the model tissue with Mycobacterium tuberculosis, the bacterium that causes TB, resulted in clustering of macrophages at the site of infection, reminiscent of early TB granuloma formation. We quantitated the extent of granuloma formation induced by different strains of mycobacteria and validated our model against findings in other TB models. We found that early granuloma formation is dependent on ESAT-6, which is secreted via the type VII secretion machinery of virulent mycobacteria. Our model, which can facilitate the discovery of the interactions between mycobacteria and host cells in a physiological environment, is the first lung tissue model described for TB.

  9. Hard tissue regeneration capacity of apical pulp derived cells (APDCs) from human tooth with immature apex.

    Science.gov (United States)

    Abe, Shigehiro; Yamaguchi, Satoshi; Watanabe, Akihiko; Hamada, Keiichi; Amagasa, Teruo

    2008-06-20

    Recent studies indicate that dental pulp is a new source of adult stem cells. The human tooth with an immature apex is a developing organ, and the apical pulp of this tooth may contain a variety of progenitor/stem cells, which participate in root formation. We investigated the hard tissue regeneration potential of apical pulp derived cells (APDCs) from human tooth with an immature apex. APDCs cultured with a mineralization-promoting medium showed alkaline phosphatase activity in porous hydroxyapatite (HA) scaffolds. The composites of APDCs and HA were implanted subcutaneously in immunocompromised rats and harvested at 12 weeks after implantation. In histological analysis, the APDCs/HA composites exhibited bone- and dentine-like mineralized tissues in the pore areas of HA. This study suggests that the human tooth with an immature apex is an effective source of cells for hard tissue regeneration.

  10. MTA resorption and periradicular healing in an open-apex incisor: A case report.

    Science.gov (United States)

    Asgary, Saeed; Ehsani, Sara

    2012-01-01

    This case report describes the periradicular healing and resorption of an unintentional extrusion of mineral trioxide aggregate (MTA) in an open-apex central incisor. A 22-year old female with a symptomatic open-apex right maxillary central incisor associated with a periradicular lesion was referred for evaluation and treatment. After chemomechanical debridement, the apical third of the root canal was filled with MTA to create an apical plug. Postoperative radiographs showed the extrusion of MTA into the periradicular lesion. The tooth was then restored with a post and crown. At the 2-year follow-up, the tooth was asymptomatic and radiographs revealed complete healing of the periradicular area. At the 7-year follow-up, complete resorption of the extruded MTA was evident. The results of this case study indicate that complete resorption of extruded MTA is possible in the long term; however, the extrusion of MTA in open-apex tooth should still be avoided.

  11. APEX Sunyaev-Zeldovich observations of the merging galaxy cluster Abell 2744.

    Science.gov (United States)

    Horellou, C.; Johansson, D.; Koloczek, A.; Singh, R.; APEX-SZ Collaboration

    This work is part of a Large Programme with APEX to map the SZ decrement at a wavelength of 2 mm in about 50 galaxy clusters. Both isolated and merging clusters were observed, and part of the XMM-LSS field. The sample will be used to constrain mass-SZ-observable scaling relations, and some individual clusters are studied in detail. Here we present SZ maps at 2 mm and at 870 mu m of Abell 2744, a massive galaxy cluster at redshift 0.31 that shows evidence of merging activity. We used two bolometer cameras on APEX: ASZCA (also called APEX-SZ), and LABOCA. With careful treatment of the data it is possible to quantify the size of the hot plasma distribution, to measure the Compton parameter (y ∝ n_eT_e dl), and to detect deviations from the X-ray brightness distribution.

  12. Efficiency of 2 electronic apex locators on working length determination: A clinical study

    Directory of Open Access Journals (Sweden)

    Sibel Koçak

    2013-01-01

    Full Text Available Aims: The aim of this clinical study was to evaluate the clinical accuracy of two electronic apex locators (EALs. Materials and Methods: A total of 120 patients with 283 roots were randomized into three groups including, traditional radiographic method, EAL (Root ZX mini, and apex locating endodontic motor (VDW Gold for working length (WL determination. Root canals were instrumented to a size ProTaper F3 nickel titanium file. The obturation quality of matched tapered master cone (ProTaper F3 was determined for the accuracy of WL. Statistical Analysis Used: Descriptive statistics were expressed as numbers and percentages. Pearson Chi-square test was used to determine for differences between groups. P < 0.05 was considered statistically significant for all tests. Results: There was no statistically significant difference between the three tested groups ( P = 0.894. Conclusions: The success of both apex locators was similar to the radiographic WL determination technique.

  13. In vivo comparison of the accuracy of two electronic apex locators.

    Science.gov (United States)

    Silveira, Luiz F M; Petry, Fernanda V; Martos, Josué; Neto, João B C

    2011-08-01

    The aim of this study was to analyse in vivo the accuracy of two apex locators, Root ZX and Novapex, to determine the position of the apical constriction. Twenty-three human single-rooted teeth to be extracted for periodontal reasons constituted the experiment. Endodontic access was obtained and the apical constriction was determined by one of the apex locators after initial crown-down preparation. When the electronic marker indicated that the tip of the endodontic file was at the apical constriction, the teeth were filled with composite and then surgically removed. The presence of the endodontic file tip at the apical constriction was evaluated stereomicroscopically (30×) and confirming radiographs were exposed. The accuracy of Root ZX and Novapex was 91.7% and 81.8% respectively. Within the limits of this study, the evaluated apex locators have a similar clinical performance for the apical constriction location.

  14. The Structure of the Transcriptional Repressor KstR in Complex with CoA Thioester Cholesterol Metabolites Sheds Light on the Regulation of Cholesterol Catabolism in Mycobacterium tuberculosis.

    Science.gov (United States)

    Ho, Ngoc Anh Thu; Dawes, Stephanie S; Crowe, Adam M; Casabon, Israël; Gao, Chen; Kendall, Sharon L; Baker, Edward N; Eltis, Lindsay D; Lott, J Shaun

    2016-04-01

    Cholesterol can be a major carbon source forMycobacterium tuberculosisduring infection, both at an early stage in the macrophage phagosome and later within the necrotic granuloma. KstR is a highly conserved TetR family transcriptional repressor that regulates a large set of genes responsible for cholesterol catabolism. Many genes in this regulon, includingkstR, are either induced during infection or are essential for survival ofM. tuberculosis in vivo In this study, we identified two ligands for KstR, both of which are CoA thioester cholesterol metabolites with four intact steroid rings. A metabolite in which one of the rings was cleaved was not a ligand. We confirmed the ligand-protein interactions using intrinsic tryptophan fluorescence and showed that ligand binding strongly inhibited KstR-DNA binding using surface plasmon resonance (IC50for ligand = 25 nm). Crystal structures of the ligand-free form of KstR show variability in the position of the DNA-binding domain. In contrast, structures of KstR·ligand complexes are highly similar to each other and demonstrate a position of the DNA-binding domain that is unfavorable for DNA binding. Comparison of ligand-bound and ligand-free structures identifies residues involved in ligand specificity and reveals a distinctive mechanism by which the ligand-induced conformational change mediates DNA release.

  15. Ex vivo accuracy of Root ZX II, Root ZX Mini and RomiApex A-15 apex locators in extracted vital pulp teeth.

    Science.gov (United States)

    da Silva, Thaís M; Alves, Flávio R F

    2014-05-01

    The objective of this study was to compare, ex vivo, the accuracy of three electronic apex locators (EALs), Root ZX II, Root ZX Mini and RomiApex A-15, in detecting the apical foramen (AF). Forty extracted single-Rooted human teeth with vital pulp were used in this study. After access preparation, the Root canal length of each tooth was measured by placing a #10 file until the tip was visible at the AF under a stereomicroscope. The teeth were subsequently embedded in an alginate model. In each Root canal, all three EALs were used to determine the working length, which was defined as the zero reading or equivalent. The distance between the file tip and AF was measured to an accuracy of 0.01 mm. Results were analyzed using analysis of variance and the Chi-squared test. Root ZX II, Root ZX Mini and RomiApex A-15 were accurate within 0.5 mm, 62.5, 56.2, 50% of the time. No significant differences were found between the three EALs (p > 0.05). Considering all EALs, the mean distance from the file tip to AF was 4.49 mm. The accuracy of the three EALs evaluated in this study was not statistically significantly different. The 'Apex' or '0.0' marks of the EALs do not indicate the AF itself, but just a position coronal 0.49 mm to the AF. Using a tolerance of ± 0.5 mm from the actual lengths, the ZX II yielded the most acceptable measurements.

  16. Imbalanced cholesterol metabolism in Alzheimer's disease.

    Science.gov (United States)

    Xue-shan, Zhao; Juan, Peng; Qi, Wu; Zhong, Ren; Li-hong, Pan; Zhi-han, Tang; Zhi-sheng, Jiang; Gui-xue, Wang; Lu-shan, Liu

    2016-05-01

    Alzheimer's disease (AD) is a complex and multifactorial neurodegenerative disease that is mainly caused by β-amyloid accumulation. A large number of studies have shown that elevated cholesterol levels may perform a function in AD pathology, and several cholesterol-related gene polymorphisms are associated with this disease. Although numerous studies have shown the important function of cholesterol in AD pathogenesis and development, the underlying mechanism remains unclear. To further elucidate cholesterol metabolism disorder and AD, we first, review metabolism and regulation of the cholesterol in the brain. Second, we summarize the literature stating that hypercholesterolemia is one of the risk factors of AD. Third, we discuss the main mechanisms of abnormal cholesterol metabolism that increase the risk of AD. Finally, the relationships between AD and apolipoprotein E, PCSK9, and LRP1 are discussed in this article.

  17. Biophysical studies of cholesterol effects on chromatin.

    Science.gov (United States)

    Silva, Isabel T G; Fernandes, Vinicius; Souza, Caio; Treptow, Werner; Santos, Guilherme Martins

    2017-03-22

    Changes in chromatin structure regulate gene expression and genome maintenance. Molecules that bind to the nucleosome, the complex of DNA and histone proteins, are key modulators of chromatin structure. Previous work indicated that cholesterol, a ubiquitous cellular lipid, may bind to chromatin in vivo, suggesting a potential function for lipids in modulating chromatin architecture. However, the molecular mechanisms of cholesterol action on chromatin structure have remained unclear. Here, we explored the biophysical impact of cholesterol on nucleosome and chromatin fibers reconstituted in vitro and characterized in silico the cholesterol binding to nucleosome. Our findings support that cholesterol assists 10nm and 30nm chromatin formation and induces folding of long chromatin fibers as a result of direct interaction of the cholesterol to six nucleosomal binding sites.

  18. Biliary cholesterol secretion: More than a simple ABC

    Institute of Scientific and Technical Information of China (English)

    Arne; Dikkers; Uwe; JF; Tietge

    2010-01-01

    Biliary cholesterol secretion is a process important for 2 major disease complexes, atherosclerotic cardiovascular disease and cholesterol gallstone disease. With respect to cardiovascular disease, biliary cholesterol secretion is regarded as the f inal step for the elimination of cholesterol originating from cholesterol-laden macrophage foam cells in the vessel wall in a pathway named reverse cholesterol transport. On the other hand, cholesterol hypersecretion into the bile is considered the main pathophys...

  19. Biliary cholesterol secretion: More than a simple ABC

    OpenAIRE

    Dikkers, Arne; Tietge, Uwe JF

    2010-01-01

    Biliary cholesterol secretion is a process important for 2 major disease complexes, atherosclerotic cardiovascular disease and cholesterol gallstone disease. With respect to cardiovascular disease, biliary cholesterol secretion is regarded as the final step for the elimination of cholesterol originating from cholesterol-laden macrophage foam cells in the vessel wall in a pathway named reverse cholesterol transport. On the other hand, cholesterol hypersecretion into the bile is considered the ...

  20. Raising HDL cholesterol in women

    Directory of Open Access Journals (Sweden)

    Danny J Eapen

    2009-11-01

    Full Text Available Danny J Eapen1, Girish L Kalra1, Luay Rifai1, Christina A Eapen2, Nadya Merchant1, Bobby V Khan11Emory University School of Medicine, Atlanta, GA, USA; 2University of South Florida School of Medicine, Tampa, FL, USAAbstract: High-density lipoprotein cholesterol (HDL-C concentration is essential in the determination of coronary heart disease (CHD risk in women. This is especially true in the postmenopausal state, where lipid profiles and CHD risk mimic that of age-matched men. Thus, interventions designed to reduce CHD risk by raising HDL-C levels may have particular significance during the transition to menopause. This review discusses HDL-C-raising therapies and the role of HDL in the primary prevention of CHD in women. Lifestyle-based interventions such as dietary change, aerobic exercise regimens, and smoking cessation are initial steps that are effective in raising HDL-C, and available data suggest women respond similarly to men with these interventions. When combined with pharmacotherapy, the effects of these lifestyle alterations are further amplified. Though studies demonstrating gender-specific differences in therapy are limited, niacin continues to be the most effective agent in raising HDL-C levels, especially when used in combination with fibrate or statin therapy. Emerging treatments such as HDL mimetic therapy show much promise in further raising HDL-C levels and improving cardiovascular outcomes.Keywords: high-density lipoprotein, HDL, women, cholesterol, heart disease

  1. Cholesterol oxidation products and their biological importance

    DEFF Research Database (Denmark)

    Kulig, Waldemar; Cwiklik, Lukasz; Jurkiewicz, Piotr

    2016-01-01

    The main biological cause of oxysterols is the oxidation of cholesterol. They differ from cholesterol by the presence of additional polar groups that are typically hydroxyl, keto, hydroperoxy, epoxy, or carboxyl moieties. Under typical conditions, oxysterol concentration is maintained at a very low...... and precisely regulated level, with an excess of cholesterol. Like cholesterol, many oxysterols are hydrophobic and hence confined to cell membranes. However, small chemical differences between the sterols can significantly affect how they interact with other membrane components, and this in turn can have...

  2. Structure of Cholesterol in Lipid Rafts

    Science.gov (United States)

    Toppozini, Laura; Meinhardt, Sebastian; Armstrong, Clare L.; Yamani, Zahra; Kučerka, Norbert; Schmid, Friederike; Rheinstädter, Maikel C.

    2014-11-01

    Rafts, or functional domains, are transient nano-or mesoscopic structures in the plasma membrane and are thought to be essential for many cellular processes such as signal transduction, adhesion, trafficking, and lipid or protein sorting. Observations of these membrane heterogeneities have proven challenging, as they are thought to be both small and short lived. With a combination of coarse-grained molecular dynamics simulations and neutron diffraction using deuterium labeled cholesterol molecules, we observe raftlike structures and determine the ordering of the cholesterol molecules in binary cholesterol-containing lipid membranes. From coarse-grained computer simulations, heterogenous membranes structures were observed and characterized as small, ordered domains. Neutron diffraction was used to study the lateral structure of the cholesterol molecules. We find pairs of strongly bound cholesterol molecules in the liquid-disordered phase, in accordance with the umbrella model. Bragg peaks corresponding to ordering of the cholesterol molecules in the raftlike structures were observed and indexed by two different structures: a monoclinic structure of ordered cholesterol pairs of alternating direction in equilibrium with cholesterol plaques, i.e., triclinic cholesterol bilayers.

  3. Cholesterol and late-life cognitive decline.

    Science.gov (United States)

    van Vliet, Peter

    2012-01-01

    High cholesterol levels are a major risk factor for cardiovascular disease, but their role in dementia and cognitive decline is less clear. This review highlights current knowledge on the role of cholesterol in late-life cognitive function, cognitive decline, and dementia. When measured in midlife, high cholesterol levels associate with an increased risk of late-life dementia and cognitive decline. However, when measured in late-life, high cholesterol levels show no association with cognitive function, or even show an inverse relation. Although statin treatment has been shown to associate with a lower risk of dementia and cognitive decline in observational studies, randomized controlled trials show no beneficial effect of statin treatment on late-life cognitive function. Lowering cholesterol levels may impair brain function, since cholesterol is essential for synapse formation and maturation and plays an important role in the regulation of signal transduction through its function as a component of the cell membrane. However, membrane cholesterol also plays a role in the formation and aggregation of amyloid-β. Factors that influence cholesterol metabolism, such as dietary intake, are shown to play a role in late-life cognitive function and the risk of dementia. In conclusion, cholesterol associates with late-life cognitive function, but the association is strongly age-dependent. There is no evidence that treatment with statins in late-life has a beneficial effect on cognitive function.

  4. Potential of BODIPY-cholesterol for analysis of cholesterol transport and diffusion in living cells

    DEFF Research Database (Denmark)

    Wüstner, Daniel; Lund, Frederik Wendelboe; Röhrl, Clemens

    2016-01-01

    Cholesterol is an abundant and important lipid component of cellular membranes. Analysis of cholesterol transport and diffusion in living cells is hampered by the technical challenge of designing suitable cholesterol probes which can be detected for example by optical microscopy. One strategy...... is to use intrinsically fluorescent sterols, as dehydroergosterol (DHE), having minimal chemical alteration compared to cholesterol but giving low fluorescence signals in the UV region of the spectrum. Alternatively, one can use dye-tagged cholesterol analogs and in particular BODIPY-cholesterol (BChol......), whose synthesis and initial characterization was pioneered by Robert Bittman. Here, we give a general overview of the properties and applications but also limitations of BODIPY-tagged cholesterol probes for analyzing intracellular cholesterol trafficking. We describe our own experiences...

  5. Black pepper and piperine reduce cholesterol uptake and enhance translocation of cholesterol transporter proteins.

    Science.gov (United States)

    Duangjai, Acharaporn; Ingkaninan, Kornkanok; Praputbut, Sakonwun; Limpeanchob, Nanteetip

    2013-04-01

    Black pepper (Piper nigrum L.) lowers blood lipids in vivo and inhibits cholesterol uptake in vitro, and piperine may mediate these effects. To test this, the present study aimed to compare actions of black pepper extract and piperine on (1) cholesterol uptake and efflux in Caco-2 cells, (2) the membrane/cytosol distribution of cholesterol transport proteins in these cells, and (3) the physicochemical properties of cholesterol micelles. Piperine or black pepper extract (containing the same amount of piperine) dose-dependently reduced cholesterol uptake into Caco-2 cells in a similar manner. Both preparations reduced the membrane levels of NPC1L1 and SR-BI proteins but not their overall cellular expression. Micellar cholesterol solubility of lipid micelles was unaffected except by 1 mg/mL concentration of black pepper extract. These data suggest that piperine is the active compound in black pepper and reduces cholesterol uptake by internalizing the cholesterol transporter proteins.

  6. [Is there a relationship between cholesterol reduction, low levels of cholesterol and mortality?].

    Science.gov (United States)

    LaRosa, J C

    1995-01-01

    Cholesterol lowering in both primary and secondary prevention has been clearly demonstrated to lower coronary morbidity and, in secondary prevention, to lower coronary mortality as well. Putative dangers of cholesterol lowering remain unproven. Population studies linking low cholesterol to noncoronary mortalities do not demonstrate cause-and-effect relations. In fact, based on current studies, the opposite is more likely to be the case. Neither gender nor age should automatically exclude persons from cholesterol screening. Drug intervention, however, should be used conservatively, particularly in young adults and the elderly. Drugs should be used only after diet and lifestyle interventions have failed. The evidence linking high blood cholesterol to coronary atherosclerosis and cholesterol lowering to its prevention is broad-based and definitive. Concerns about cholesterol lowering and spontaneously low cholesterols should be pursued but should not interfere with the implementation of current public policies to reduce the still heavy burden of atherosclerosis in Western society.

  7. From blood to gut : Direct secretion of cholesterol via transintestinal cholesterol efflux

    NARCIS (Netherlands)

    Vrins, Carlos L. J.

    2010-01-01

    The reverse cholesterol transport pathway (RCT) is the focus of many cholesterol lowering therapies By way of this pathway, excess cholesterol is collected from peripheral tissues and delivered back to the liver and gastrointestinal tract for excretion from the body For a long time this removal via

  8. Statins increase hepatic cholesterol synthesis and stimulate fecal cholesterol elimination in mice

    NARCIS (Netherlands)

    Schonewille, Marleen; de Boer, Jan Freark; Mele, Laura; Wolters, Henk; Bloks, Vincent W.; Wolters, Justina C.; Kuivenhoven, Jan A.; Tietge, Uwe J. F.; Brufau, Gemma; Groen, Albert K.

    2016-01-01

    Statins are competitive inhibitors of HMG-CoA reductase, the rate-limiting enzyme of cholesterol synthesis. Statins reduce plasma cholesterol levels, but whether this is actually caused by inhibition of de novo cholesterol synthesis has not been clearly established. Using three different statins, we

  9. Dietary cholesterol and fats at a young age : do they influence cholesterol metabolism in adult life?

    NARCIS (Netherlands)

    Temmerman, A M; Vonk, R J; Niezen-Koning, K; Berger, R.; Fernandes, J

    1989-01-01

    The effects of dietary cholesterol and fats on cholesterol metabolism later in life were studied in Mongolian gerbils. Three groups were given a basic diet with soybean oil, palm kernel oil amounting to 8.75% (w/w), or the basic diet only. In three other groups, cholesterol (0.05%) was added to the

  10. Statins increase hepatic cholesterol synthesis and stimulate fecal cholesterol elimination in mice

    NARCIS (Netherlands)

    Schonewille, Marleen; de Boer, Jan Freark; Mele, Laura; Wolters, Henk; Bloks, Vincent W; Wolters, Justina C; Kuivenhoven, Jan Albert; Tietge, Uwe J.F.; Brufau Dones, Gemma; Groen, Albert K

    2016-01-01

    Statins are competitive inhibitors of HMG-CoA reductase, the rate-limiting enzyme of cholesterol synthesis. Statins reduce plasma cholesterol levels, but whether this is actually caused by inhibition of de novo cholesterol synthesis has not been clearly established. Using three different statins we

  11. Cholesterol orientation and tilt modulus in DMPC bilayers

    OpenAIRE

    Khelashvili, George; Pabst, Georg; Harries, Daniel

    2010-01-01

    We performed molecular dynamics (MD) simulations of hydrated bilayers containing mixtures of dimyristoylphosphatidylcholine (DMPC) and Cholesterol at various ratios, to study the effect of cholesterol concentration on its orientation, and to characterize the link between cholesterol tilt and overall phospholipid membrane organization. The simulations show a substantial probability for cholesterol molecules to transiently orient perpendicular to the bilayer normal, and suggest that cholesterol...

  12. Apex simulation: environmental benefits of agroforestry and grass buffers for corn-soybean watersheds

    Science.gov (United States)

    The Agricultural Policy Environmental Extender (APEX) model is used to simulate the effects of vegetative filter strips on runoff and pollutant loadings from agricultural watersheds. A long-term paired watershed study under corn (Zea mays L-soybean [Glycine max (L.) Merr.] rotation with agroforestr...

  13. Code modernization and modularization of APEX and SWAT watershed simulation models

    Science.gov (United States)

    SWAT (Soil and Water Assessment Tool) and APEX (Agricultural Policy / Environmental eXtender) are respectively large and small watershed simulation models derived from EPIC Environmental Policy Integrated Climate), a field-scale agroecology simulation model. All three models are coded in FORTRAN an...

  14. Congenital cholesteatoma of petrous apex: Rare case report: Diagnostic and management challenge

    Directory of Open Access Journals (Sweden)

    Arun Dehadaray

    2013-01-01

    Full Text Available A rare case of congenital cholesteatoma of petrous apex with facial nerve palsy and its successful management is reported. 49 year old female presented with progressive vertigo since 2 years. Patient developed tinnitus and hearing loss in the right ear since 7 months and right sided complete facial asymmetry since 6 months. She had normal right tympanic membrane and complete right lower motor neuron facial nerve palsy. She also had profound sensorineural hearing loss with positive Cerebellar signs. Magnetic resonance imaging and High resolution computed tomography with contrast temporal bone showed extensive bony destruction and petrous apex lesion. Facial nerve and vestibular cochlear nerve was compressed by abnormal soft-tissue present in the internal auditory meatus. Transmastoid translabyrinthine exploration was carried out for petrous apex lesion. Intra-operative extensive bony erosion was noted in the temporal bone. Erosion was extending upto Internal Acoustic Meatus compressing VII and VIII nerve bundle. Post-operatively patient was relieved of vertigo and tinnitus. Though hearing didn′t improve, but there was an improvement in facial palsy. Congenital petrous apex cholesteatoma is very rare case. With no specific radiological signs congenital cholesteatoma is difficult to diagnose pre-operatively. It was a challenge to treat surgically such a rare case with extensive neurosurgical presentation without any neurological deficit. Patient showed improvement official nerve after the 1΍ year of surgery.

  15. An In Vitro Comparison of Propex II Apex Locator to Standard Radiographic Method

    Science.gov (United States)

    Chakravarthy Pishipati, Kalyan Vinayak

    2013-01-01

    Introduction The aim of this in vitro study was to compare the accuracy of radiography in assessing working length to Propex II apex locator. Materials and Methods Thirty single canal extracted human teeth with patent apical foramen were selected. Access cavities were prepared. Anatomic length (AL) was determined by inserting a K-file into the root canal until the file tip was just visible at the most coronal aspect of the apical foramen; subsequently 0.5 mm was deducted from this measured length. Working length by radiographic method (RL) was determined using Ingle’s method. Propex II apex locator was used to determine the electronic working length (EL). From these calculated lengths, AL was deducted to obtain D-value. D-value in the range of +/-0.5 mm was considered to be acceptable. Results The percentage accuracy of RL and Propex II apex locator was 76.6% and 86.6%, respectively. Paired t-test revealed significant difference between the RL and Propex II apex locator (Plocator has determined working length more accurately than radiographic method. PMID:23922572

  16. Accuracy of three electronic apex locators in the presence of different irrigating solutions.

    Science.gov (United States)

    Carvalho, Ana Laura Pion; Moura-Netto, Cacio; Moura, Abilio Albuquerque Maranhão de; Marques, Márcia Martins; Davidowicz, Harry

    2010-01-01

    The present study compared the accuracy of three electronic apex locators (EALs) - Elements Diagnostic®, Root ZX® and Apex DSP® - in the presence of different irrigating solutions (0.9% saline solution and 1% sodium hypochlorite). The electronic measurements were carried out by three examiners, using twenty extracted human permanent maxillary central incisors. A size 10 K file was introduced into the root canals until reaching the 0.0 mark, and was subsequently retracted to the 1.0 mark. The gold standard (GS) measurement was obtained by combining visual and radiographic methods, and was set 1 mm short of the apical foramen. Electronic length values closer to the GS (± 0.5 mm) were considered as accurate measures. Intraclass correlation coefficients (ICCs) were used to verify inter-examiner agreement. The comparison among the EALs was performed using the McNemar and Kruskal-Wallis tests (p 0.05), independent of the irrigating solutions used. The measurements taken with these two EALs were more accurate than those taken with Apex DSP®, regardless of the irrigating solution used (p locators are able to locate the cementum-dentine junction more precisely than Apex DSP®. The presence of irrigating solutions does not interfere with the performance of the EALs.

  17. APEX (Air Pollution Exercise) Volume 21: Legal References: Air Pollution Control Regulations.

    Science.gov (United States)

    Environmental Protection Agency, Research Triangle Park, NC. Office of Manpower Development.

    The Legal References: Air Pollution Control Regulations Manual is the last in a set of 21 manuals (AA 001 009-001 029) used in APEX (Air Pollution Exercise), a computerized college and professional level "real world" game simulation of a community with urban and rural problems, industrial activities, and air pollution difficulties. The manual…

  18. Cholesterol, the central lipid of mammalian cells

    NARCIS (Netherlands)

    Maxfield, F. R.; van Meer, G.

    2010-01-01

    Despite its importance for mammalian cell biology and human health, there are many basic aspects of cholesterol homeostasis that are not well understood. Even for the well-characterized delivery of cholesterol to cells via lipoproteins, a novel regulatory mechanism has been discovered recently, invo

  19. Evaluating computational models of cholesterol metabolism

    NARCIS (Netherlands)

    Paalvast, Yared; Kuivenhoven, Jan Albert; Groen, Albert K.

    2015-01-01

    Regulation of cholesterol homeostasis has been studied extensively during the last decades. Many of the metabolic pathways involved have been discovered. Yet important gaps in our knowledge remain. For example, knowledge on intracellular cholesterol traffic and its relation to the regulation of chol

  20. Synthetic fiber from a teddy bear causing keratitis and conjunctival granuloma: case report

    Directory of Open Access Journals (Sweden)

    Prause Jan U

    2011-06-01

    Full Text Available Abstract Background To report a case of keratitis and a case of conjunctivitis caused by synthetic fibers from toy teddy bears. Case presentation Case stories with histopathological analysis. 1 A two-year-old girl developed a severe case of keratitis and corneal ulceration. The initial treatment with various antibiotics gave no improvement and eventually the patient developed spontaneous perforation of the cornea. The corneal swabs contained no bacteria or fungi. Corneal grafting was performed and the corneal button was sent for histopathological examination. 2 A five-year-old girl presented with ocular irritation in her left eye. Examination revealed a conjunctival granuloma in the inferior fornix. The lesion was excised and histopathologically examined. Results Microscopy revealed synthetic fibers embedded in the cornea and in the conjunctival granuloma. The diagnosis was confirmed by demonstration of marked birefringence of the synthetic fibers. Microscopical examination of synthetic fibers from two different types of fur (whiskers and face hairs from the two-year-old girl's teddy bear was performed. Hairs from the face of the teddy bear were morphologically and microscopically identical with the fibers causing the severe corneal ulceration in the two-year-old girl. Conclusions Doctors should especially in small children be aware of the risk of ocular consequences of close exposure of synthetic fibers from stuffed toy animals. Corneal ulceration, clinically presenting as corneal infection with negative culturing and staining, should lead to a different clinical strategy and treatment. The treatment of conjunctival synthetic fiber granuloma is excision and antibiotic eye drops.

  1. Prosopis farcta beans increase HDL cholesterol and decrease LDL cholesterol in ostriches (Struthio camelus).

    Science.gov (United States)

    Omidi, Arash; Ansari nik, Hossein; Ghazaghi, Mahmood

    2013-02-01

    Ten blue-neck male ostriches (Struthio camelus) were fed Prosopis farcta beans throughout a 30-day experiment. Blood samples were collected from ostriches on days 0 and 30 to measure levels of high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, triglyceride, total serum protein, albumin, globulin, cholesterol, calcium, inorganic phosphorus, the activity of aspartate aminotransferase, alanine aminotransferase, and γ-glutamyl transferase (γ-GT). From days 0 to 30, HDL cholesterol, total protein, and globulins levels increased significantly whereas LDL cholesterol, inorganic phosphorus, and γ-GT activity decreased significantly.

  2. Reassessing the trophic role of reef sharks as apex predators on coral reefs

    Science.gov (United States)

    Frisch, Ashley J.; Ireland, Matthew; Rizzari, Justin R.; Lönnstedt, Oona M.; Magnenat, Katalin A.; Mirbach, Christopher E.; Hobbs, Jean-Paul A.

    2016-06-01

    Apex predators often have strong top-down effects on ecosystem components and are therefore a priority for conservation and management. Due to their large size and conspicuous predatory behaviour, reef sharks are typically assumed to be apex predators, but their functional role is yet to be confirmed. In this study, we used stomach contents and stable isotopes to estimate diet, trophic position and carbon sources for three common species of reef shark ( Triaenodon obesus, Carcharhinus melanopterus and C. amblyrhynchos) from the Great Barrier Reef (Australia) and evaluated their assumed functional role as apex predators by qualitative and quantitative comparisons with other sharks and large predatory fishes. We found that reef sharks do not occupy the apex of coral reef food chains, but instead have functional roles similar to those of large predatory fishes such as snappers, emperors and groupers, which are typically regarded as high-level mesopredators. We hypothesise that a degree of functional redundancy exists within this guild of predators, potentially explaining why shark-induced trophic cascades are rare or subtle in coral reef ecosystems. We also found that reef sharks participate in multiple food webs (pelagic and benthic) and are sustained by multiple sources of primary production. We conclude that large conspicuous predators, be they elasmobranchs or any other taxon, should not axiomatically be regarded as apex predators without thorough analysis of their diet. In the case of reef sharks, our dietary analyses suggest they should be reassigned to an alternative trophic group such as high-level mesopredators. This change will facilitate improved understanding of how reef communities function and how removal of predators (e.g., via fishing) might affect ecosystem properties.

  3. Trapping crystal nucleation of cholesterol monohydrate

    DEFF Research Database (Denmark)

    Solomonov, I.; Weygand, M.J.; Kjær, K.

    2005-01-01

    Crystalline nucleation of cholesterol at the air-water interface has been studied via grazing incidence x-ray diffraction using synchrotron radiation. The various stages of cholesterol molecular assembly from monolayer to three bilayers incorporating interleaving hydrogen-bonded water layers...... in a monoclinic cholesterol . H2O phase, has been monitored and their structures characterized to near atomic resolution. Crystallographic evidence is presented that this multilayer phase is similar to that of a reported metastable cholesterol phase of undetermined structure obtained from bile before...... transformation to the triclinic phase of cholesterol . H2O, the thermodynamically stable macroscopic form. According to grazing incidence x-ray diffraction measurements and crystallographic data, a transformation from the monoclinic film structure to a multilayer of the stable monohydrate phase involves...

  4. The Structure of Cholesterol in Lipid Rafts

    CERN Document Server

    Toppozini, Laura; Armstrong, Clare L; Yamani, Zahra; Kucerka, Norbert; Schmid, Friederike; Rheinstaedter, Maikel C

    2014-01-01

    Rafts, or functional domains, are transient nano- or mesoscopic structures in the plasma membrane and are thought to be essential for many cellular processes such as signal transduction, adhesion, trafficking and lipid/protein sorting. Observations of these membrane heterogeneities have proven challenging, as they are thought to be both small and short-lived. With a combination of coarse-grained molecular dynamics simulations and neutron diffraction using deuterium labeled cholesterol molecules we observe raft-like structures and determine the ordering of the cholesterol molecules in binary cholesterol-containing lipid membranes. From coarse-grained computer simulations, heterogenous membranes structures were observed and characterized as small, ordered domains. Neutron diffraction was used to study the lateral structure of the cholesterol molecules. We find pairs of strongly bound cholesterol molecules in the liquid-disordered phase, in accordance with the umbrella model. Bragg peaks corresponding to orderin...

  5. Cholesterol in myelin biogenesis and hypomyelinating disorders.

    Science.gov (United States)

    Saher, Gesine; Stumpf, Sina Kristin

    2015-08-01

    The largest pool of free cholesterol in mammals resides in myelin membranes. Myelin facilitates rapid saltatory impulse propagation by electrical insulation of axons. This function is achieved by ensheathing axons with a tightly compacted stack of membranes. Cholesterol influences myelination at many steps, from the differentiation of myelinating glial cells, over the process of myelin membrane biogenesis, to the functionality of mature myelin. Cholesterol emerged as the only integral myelin component that is essential and rate-limiting for the development of myelin in the central and peripheral nervous system. Moreover, disorders that interfere with sterol synthesis or intracellular trafficking of cholesterol and other lipids cause hypomyelination and neurodegeneration. This review summarizes recent results on the roles of cholesterol in CNS myelin biogenesis in normal development and under different pathological conditions. This article is part of a Special Issue entitled Brain Lipids.

  6. Granuloma annulare and necrobiosis lipoidica with sequential occurrence in a patient: report and review of literature

    Science.gov (United States)

    Rupley, Katherine A.; Riahi, Ryan R.; Hooper, Deirdre O’Boyle

    2015-01-01

    Granuloma annulare (GA) and necrobiosis lipoidica (NL) are granulomatous diseases of undetermined etiology. Rarely, both dermatoses have been reported to occur concomitantly in patients. GA and NL are characterized histologically by areas of necrobiosis of collagen. The two diseases share some common characteristics, which may suggest that these dermatoses could occur as a spectrum in some patients or possibly share a similar pathogenesis. We report on a 67-year-old Caucasian woman with a history of NL on the anterior shins that later developed lesions of GA on the breasts, trunk, and wrist. We also review the literature and discuss the characteristics of patients with concomitant GA and NL. PMID:25692078

  7. Successful treatment of generalized elastolytic giant cell granuloma with psoralen-ultraviolet A.

    Science.gov (United States)

    Pérez-Pérez, Lidia; García-Gavín, Juan; Allegue, Francisco; Ortiz-Rey, José Antonio; Zulaica, Ander

    2012-10-01

    Elastolytic giant cell granuloma (EGCG) is an infrequent granulomatous skin disorder with variable response to different therapeutic regimens. Information on the benefit of phototherapy is very scarce as this therapy has seldom been tried in the affected patients. We present the results achieved in two female patients after undergoing psoralen-ultraviolet A (PUVA). Two 54-year-old otherwise healthy female patients received a course of PUVA after trying other alternatives. Complete clearance was achieved in the two patients with excellent tolerance and no adverse effects. We consider PUVA is a well-tolerated, safe, and effective treatment for patients with EGCG.

  8. Foreign body granuloma mimicking recurrent intracranial tumor: a very rare clinical entity.

    Directory of Open Access Journals (Sweden)

    Askin Esen Hasturk

    2013-11-01

    Full Text Available Gelatin sponge, oxidized cellulose and microfibrillar collagen are used to achieve hemostasis during neurosurgical procedures. Hemostatic agents may produce clinically symptomatic, radiologically apparent mass lesions. The differential diagnosis should include the foreign body along with recurrent tumor. We present a case of intracranial hemostatic agents found in a 56-year-old male patient seven years after undergoing a craniotomy for a left posterior parietal convexity meningioma. Preoperative magnetic resonance imaging (MRI suggested the presence of a recurrent tumor. We emphasize that although it is rare, a granuloma due to a foreign body reaction can result in a false image of tumor recurrence.

  9. Eosinophilic granuloma of the skull base: patient with unique clinical moreover, radiographic presentation.

    Directory of Open Access Journals (Sweden)

    Hosein Dalili

    2015-01-01

    Full Text Available This case report presents an eight-year-old girl having periauricular swelling and severe pain during mouth opening on the right-side temporomandibular joint (TMJ. CBCT showed extensive destruction of the base of the skull and the roof of the glenoid fossa on the right side. The findings based on CT and MRI images with and without contrast are discussed herein. This report highlights a skull base eosinophilic granuloma that mimics TMJ disorder and the importance of proper evaluation of CBCT images to make an early diagnosis.

  10. Effect of Withania somnifera on glycosaminoglycan synthesis in carrageenin-induced air pouch granuloma

    Energy Technology Data Exchange (ETDEWEB)

    Begum, V.H.; Sadique, J.

    1987-12-01

    The effect of W. somnifera on glycosaminoglycan synthesis in the granulation tissue of carrageenin-induced air pouch granuloma was studied. W. somnifera was shown to exert significant inhibitory effect on incorporation of /sup 35/S into the granulation tissue. The uncoupling effect on oxidative phosphorylation (ADP/O ratio reduction) was also observed in the mitochondria of granulation tissue. Further, Mg/sup 2 +/ dependent ATPase activity was found to be influenced by W. somnifera. W. somnifera also reduced the succinate dehydrogenase enzyme activity in the mitochondria of granulation tissue.

  11. Neutrophils exert protection in the early tuberculous granuloma by oxidative killing of mycobacteria phagocytosed from infected macrophages.

    Science.gov (United States)

    Yang, Chao-Tsung; Cambier, C J; Davis, J Muse; Hall, Christopher J; Crosier, Philip S; Ramakrishnan, Lalita

    2012-09-13

    Neutrophils are typically the first responders in host defense against invading pathogens, which they destroy by both oxidative and nonoxidative mechanisms. However, despite a longstanding recognition of neutrophil presence at disease sites in tuberculosis, their role in defense against mycobacteria is unclear. Here we exploit the genetic tractability and optical transparency of zebrafish to monitor neutrophil behavior and its consequences during infection with Mycobacterium marinum, a natural fish pathogen. In contrast to macrophages, neutrophils do not interact with mycobacteria at initial infection sites. Neutrophils are subsequently recruited to the nascent granuloma in response to signals from dying infected macrophages within the granuloma, which they phagocytose. Some neutrophils then rapidly kill the internalized mycobacteria through NADPH oxidase-dependent mechanisms. Our results provide a mechanistic link to the observed patterns of neutrophils in human tuberculous granulomas and the susceptibility of humans with chronic granulomatous disease to mycobacterial infection.

  12. A extremely rare case of cervical intramedullary granuloma due to Brucella accompanied by Chiari Type-1 malformation.

    Science.gov (United States)

    Tufan, Kadir; Aydemir, Fatih; Sarica, Feyzi Birol; Kursun, Ebru; Kardes, Özgür; Cekinmez, Melih; Caner, Hakan

    2014-01-01

    Chiari Type-1 malformation is displacement of the cerebellar tonsils through the foramen magnum into the cervical spine and usually does not exceed the level of C2. It is 50-70% associated with syringomyelia. Nervous system involvement due to brucellosis is called neurobrucellosis, and neurological involvement rate has been reported an average of 3-5%, ranging between 3% and 25% at different series. Intramedullary abscess or granuloma due to Brucella is extremely rare. Hence far, six cases have been reported in the literature and only two of these cases were reported as intramedullary granuloma. This case is presented in order to remind the importance of the cervical cord granuloma which was presented once before in the literature and to emphasize the importance of evaluation of patient history, clinical and radiological findings together in the evaluation of a patient.

  13. Major Risk Factors for Heart Disease: High Blood Cholesterol

    Science.gov (United States)

    ... Major Risk Factors for Heart Disease High Blood Cholesterol High blood cholesterol is another major risk factor for heart disease ... can do something about. The higher your blood cholesterol level, the greater your risk for developing heart ...

  14. High Blood Cholesterol: What You Need to Know

    Science.gov (United States)

    ... Audiences Contact The Health Information Center High Blood Cholesterol: What You Need To Know Table of Contents ... Lifestyle Changes (TLC) Drug Treatment Resources Why Is Cholesterol Important? Your blood cholesterol level has a lot ...

  15. Cholesterol: Top Five Foods to Lower Your Numbers

    Science.gov (United States)

    Cholesterol: Top foods to improve your numbers Diet can play an important role in lowering your cholesterol. Here are the top foods to lower your cholesterol and protect your heart. By Mayo Clinic Staff ...

  16. Genomic structure of the rat major AP endonuclease gene (Apex with an adjacent putative O-sialoglycoprotease gene (Prsmg1/Gcpl1 and a processed Apex pseudogene (Apexp1.

    Directory of Open Access Journals (Sweden)

    Yao,Ming

    1999-12-01

    Full Text Available Genomic sequencing and chromosomal assignment of the gene encoding rat APEX nuclease, a multifunctional DNA repair enzyme, were performed. An active Apex gene and a processed pseudogene were isolated from a rat genomic library. The active Apex gene consists of 5 exons and 4 introns spanning 2.1 kb. The putative promoter region of the Apex gene lacks the typical TATA box, but contains CAAT boxes and a CpG island having putative binding sites for several transcription factors, such as Sp1, AP-2, GATA-1 and ATF. A putative O-sialoglycoprotease (a homologue of Pasteurella haemolytica glycoprotease, gcp; abbreviated as Prsmg1/Gcpl1 gene consisting of 11 exons and 10 introns spanning 7.3 kb lies immediately adjacent to the Apex gene in a 5'-to-5' orientation. The Apex gene locus was mapped to rat chromosome 15p12 using in situ hybridization. The processed pseudogene (designated as rat Apexp1 has a nucleotide sequence 87.1% identical to that of the rat Apex cDNA, although several stop codons interrupting the coding sequences and multiple nucleotide deletions were observed. The Apexp1 is located in an inactive LINE sequence. Calculation of nucleotide substitution rates suggests that the immediate, active progenitor of Apexp1 arose 23 million years ago and that the non-functionalization occurred 15 million years ago.

  17. Endogenous cholesterol synthesis, fecal steroid excretion and serum lanosterol in subjects with high or low response of serum cholesterol to dietary cholesterol

    NARCIS (Netherlands)

    Beynen, A.C.; Katan, M.B.; Gent, van C.M.

    1986-01-01

    In this study we addressed the question whether hypo- and hyper-responders to dietary cholesterol differ with regard to the flexibility of endogenous cholesterol synthesis after changes in cholesterol intake. Whole-body cholesterol synthesis was measured as faecal excretion of neutral steroids and b

  18. As dimensões do granuloma causado pelos ovos do Schistosoma mansoni no fígado humano

    Directory of Open Access Journals (Sweden)

    Pedro Raso

    1978-12-01

    Full Text Available Os aa. determinaram o diâmetro médio dos granulomas esquistossomóticos em suas várias fases evolutivas (necrótico-exsudativa, produtiva e em cura pór fibrose em 332 casos de esquistossomose hepática humana: 167 na forma aguda, toxêmica e 165 nas formas crônicas (hepatesplênica, miliar. Foram medidos 286 granulomas em punções biópsias da primeira e 165 em punções biópsias e biópsias cirúrgicas da segunda.

  19. Physiological and pathological implications of cholesterol.

    Science.gov (United States)

    Cortes, Victor A; Busso, Dolores; Maiz, Alberto; Arteaga, Antonio; Nervi, Flavio; Rigotti, Attilio

    2014-01-01

    Cholesterol has evolved to fulfill sophisticated biophysical, cell signaling and endocrine requirements of animal systems. At a cellular level, cholesterol is found in membranes, where it increases both bilayer stiffness and impermeability to water and ions. Furthermore, cholesterol is integrated into specialized lipid-protein membrane microdomains with critical topographical and signaling functions. At an organismal level, cholesterol is the precursor for all steroid hormones, including gluco- and mineralo-corticoids, sex hormones and vitamin D, all of which regulate carbohydrate, sodium, reproductive and bone homeostasis, respectively. This sterol is also the precursor for bile acids, which are important for intestinal absorption of dietary lipids as well as energy and glucose metabolic regulation. Importantly, complex mechanisms maintain cholesterol within physiological ranges and the disregulation of these mechanisms results in embryonic or adult diseases, caused by either excessive or reduced tissue cholesterol levels. The causative role of cholesterol in these diseases has been demonstrated by diverse genetic and pharmacologic animal models that are commented in this review.

  20. Granuloma a cuerpo extraño en abdomen secundario a sutura no absorbible

    Directory of Open Access Journals (Sweden)

    Marlyn González

    2016-08-01

    Full Text Available Los granulomas a cuerpo extraño son inducidos por cuerpos relativamente inertes, es típico que se formen alrededor de material como talco o suturas. Algunos estudios describen que las suturas no absorbibles especialmente la seda tiene mayor índice de complicaciones como son la formación de granuloma a cuerpo extraño y dolor postoperatorio. Se reporta el caso de una paciente femenino de 40 años de edad, quién consulta por presentar dolor abdominal de moderada intensidad a nivel de epigástrio, de dos meses de evolución acompañado de náuseas y vómitos, presenta como antecedente quirúrgico una miomectomía realizada hace dos meses. Al examen físico de ingreso abdomen globoso a expensas de panículo adiposo, ruidos hidroaéreos presentes, blando, depresible, doloroso a la palpación en epigástrico donde se evidencia tumoración móvil de 10 x 10 cm aproximadamente, sin signos de irritación peritoneal. Se realizó laparotomía exploradora con los siguientes hallazgos: tumoración de 10 x 15 cm a nivel de epigastrio formado por epiplón mayor adherido a colon transverso y colon sigmoides formando plastrón alrededor de sutura no absorbible.

  1. Specific features of a rare form of disseminated necrobiosis lipoidica granuloma annulare type: a case report.

    Science.gov (United States)

    Ianoşi, Simona Laura; Tutunaru, Cristina; Georgescu, Claudia Valentina; Ianoşi, Nicolae Gabriel; Georgescu, Diana Monica; Dănoiu, Suzana; Niculescu, Elena Carmen; Neagoe, Carmen Daniela

    2014-01-01

    Necrobiosis lipoidica (NL) is a rare dermatosis that has been shown to precede the onset of diabetes mellitus in 15% of patients. It is more common in women; the average age of the onset is 30 years. Skin lesions of classic NL begin as a small papule, typically on the bilateral pretibial area. Progressively, these papules become indurated plaques with an atrophic, yellow center and multiple telangiectatic vessels, and brown-violaceous borders. We present the case of a 57-year-old male with type II diabetes mellitus from 2004, class II obesity, hepatosteatosis and metabolic disturbances who presents a disseminated eruption from 2010, formed by indurated plaques with flattened centers and a tendency of atrophy and raised, sharply demarcated, red-violaceous borders, having a variable diameter between 1.5 and 5 cm. The laboratory findings revealed elevated glucose levels between 250 and 300 mg%, high levels of transaminases and lipids. Diagnosis of disseminated necrobiosis lipoidica granuloma annulare-type was histopathologically confirmed. For the treatment, we have used topical corticosteroids and Tacrolimus 0.1% and systemic vasodilators. We consider this rare case interesting because has some peculiarities, as: disseminated lesions extend over the characteristic areas for necrobiosis lipoidica, the characteristic features of lesions similar to granuloma annulare, gender (male) and the onset of the disease over fifth decade.

  2. Granuloma macular por tuberculose sem manifestação pulmonar

    Directory of Open Access Journals (Sweden)

    Albert Costa Rebello

    2015-08-01

    Full Text Available RESUMO Tuberculose é uma doença infecciosa causada pelo Mycobacterium tuberculosis, também conhecido como bacilo de Koch. O principal sítio de acometimento é o pulmonar, porém o bacilo pode disseminar-se por via linfo-hematogênica para outros órgãos, dentre eles o olho. A incidência de tuberculose ocular é de 1 a 2% dos casos extrapulmonares. Os autores apresentam um caso clínico de um paciente do sexo feminino de 28 anos que procura atendimento médico devido à redução da acuidade visual em olho esquerdo há 7 dias. Apresentava a melhor acuidade visual corrigida no olho acometido de 20/200 e no olho contralateral de 20/20. Na fundoscopia era evidenciado um granuloma em área macular do olho esquerdo, com edema e hemorragia intrarretiniana adjacente. Após investigação diagnóstica, a paciente foi tratada com esquema antibiótico para tuberculose durante 6 meses, obtendo regressão do granuloma e melhora da acuidade visual deste olho para 20/50.

  3. Mycobacterium abscessus-Induced Granuloma Formation Is Strictly Dependent on TNF Signaling and Neutrophil Trafficking

    Science.gov (United States)

    Bernut, Audrey; Nguyen-Chi, Mai; Kremer, Laurent

    2016-01-01

    Mycobacterium abscessus is considered the most common respiratory pathogen among the rapidly growing non-tuberculous mycobacteria. Infections with M. abscessus are increasingly found in patients with chronic lung diseases, especially cystic fibrosis, and are often refractory to antibiotic therapy. M. abscessus has two morphotypes with distinct effects on host cells and biological responses. The smooth (S) variant is recognized as the initial airway colonizer while the rough (R) is known to be a potent inflammatory inducer associated with invasive disease, but the underlying immunopathological mechanisms of the infection remain unsolved. We conducted a comparative stepwise dissection of the inflammatory response in S and R pathogenesis by monitoring infected transparent zebrafish embryos. Loss of TNFR1 function resulted in increased mortality with both variants, and was associated with unrestricted intramacrophage bacterial growth and decreased bactericidal activity. The use of transgenic zebrafish lines harboring fluorescent macrophages and neutrophils revealed that neutrophils, like macrophages, interact with M. abscessus at the initial infection sites. Impaired TNF signaling disrupted the IL8-dependent neutrophil mobilization, and the defect in neutrophil trafficking led to the formation of aberrant granulomas, extensive mycobacterial cording, unrestricted bacterial growth and subsequent larval death. Our findings emphasize the central role of neutrophils for the establishment and maintenance of the protective M. abscessus granulomas. These results also suggest that the TNF/IL8 inflammatory axis is necessary for protective immunity against M. abscessus and may be of clinical relevance to explain why immunosuppressive TNF therapy leads to the exacerbation of M. abscessus infections. PMID:27806130

  4. Forma granulomatosa da criptococose cerebral: relato de caso Cryptococcal granuloma of the brain: case report

    Directory of Open Access Journals (Sweden)

    Jean Luc Fobe

    1995-12-01

    Full Text Available A criptococose do sistema nervoso central na sua forma granulomatosa ou criptococoma é rara, sendo mais freqüente a forma meningítica ou meningoencefalítica. Apresentamos o case de um paciente de 56 anos, não portador da síndrome de imunodeficiência adquirida, com manifestação clínica inicial de síndrome de hipertensão intracraniana em decorrência de criptococoma occípito-parietal que foi removido cirurgicamente, seguido do tratamento medicamentoso com anfotericina-B e 5-fIuorocitosina. A fisiopatologia, o diagnóstico por imagem e o tratamento são revistos.Cryptococcal granuloma or toruloma of the central nervous system is very rare, meningoencefalitis or meningitis being most common. The authors present the case of an immunocompetent male patient of 56 years old with initial clinical symptoms of intracranial hypertension due to an occípito-parietal crytococcal granuloma that was removed surgically. The patients was treated post operatively with anphotericin-B and 5-fluorcytosine. Pathophysiology, neuroimaging, diagnosis and treatment of this rare entity are discussed.

  5. Suture granuloma of the abdominal wall with intraabdominal extension 12 years after open appendectomy

    Institute of Scientific and Technical Information of China (English)

    Goran Augustin; Dragan Korolija; Mate Skegro; Jasminka Jakic-Razumovic Goran

    2009-01-01

    Most complications after appendectomy occur within ten days;however,we report the unusual case of a suture granuloma 12 years after open appendectomy.The afebrile 75-year-old woman presented with a slightly painful palpable mass in the right lower abdomen.There was no nausea or vomiting and bowel movements were normal.She lost 10 kg during the 3 mo before presentation.The patient had undergone an appendectomy 12 years previously.Physical examination revealed a tender mass,10 cm in diameter,under the appendectomy scar.The preoperative laboratory findings,tumor markers and plain abdominal radiographs were normal.Multi-slice computed tomography scanning showed an inhomogenous abdominal mass with minimal vascularization in the right lower abdomen 8.6 cm×8 cm×9 cm in size which communicated with the abdominal wall.The abdominalwall was thickened,weak and bulging.The abdominalwall mass did not communicate with the cecumor the ascending colon.Complete excision of the abdominalwall mass was performed via median laparotomy.Histopathological examination revealed a granuloma with a central abscess.This case report demonstrates that a preoperative diagnosis of abdominal wall mass after open appendectomy warrants the use of a wide spectrum of diagnostic modalities and consequently different treatment options.

  6. Association of man-made mineral fibre exposure and sarcoidlike granulomas.

    Science.gov (United States)

    Drent, M; Bomans, P H; Van Suylen, R J; Lamers, R J; Bast, A; Wouters, E F

    2000-08-01

    It is assumed that sarcoidosis is caused by inhalation of air borne agents in susceptible persons triggering the inflammatory reaction. The association of metallic dust exposure, such as beryllium and aluminium, and sarcoidlike pulmonary disorders is well known. The ability of man-made mineral fibres (MMMF) to cause granulomatous lung disease has not been appreciated until now. Recently, we observed the association of sarcoidlike granulomatous reaction and occupational history of glass fibre exposure. We hypothesized that there might be a relationship between MMMF exposure and the development of sarcoidlike granulomas. Therefore, the records of 50 sarcoidosis patients-who visited our outpatient clinic between 1996 and 1999 were reviewed. This revealed that 14 cases recalled a history of exposure to either glass fibres or rock wool, both MMMF fibres. The available obtained tissue specimens (n = 12) were reviewed. In six cases electron microscopy qualitative analysis of small fragments of the tissue revealed among others silica, aluminium and sometimes titanium. A distinct relation between fibre deposits fibre deposits and granulomas was found. These findings indicate that in susceptible people MMMF exposure might be related to a chronic granulomatous disease similar to chronic beryllium disease.

  7. A church-based cholesterol education program.

    Science.gov (United States)

    Wiist, W H; Flack, J M

    1990-01-01

    The leading cause of death among black people in the United States is coronary heart disease, accounting for about 25 percent of the deaths. The Task Force on Black and Minority Health formed by the Secretary of Health and Human Services in 1985 subsequently recommended increased efforts to reduce risk factors for coronary heart disease in the black population. A stated focus of the National Heart, Lung, and Blood Institute's National Cholesterol Education Program has been that of reaching minority groups. This report describes a pilot cholesterol education program conducted in black churches by trained members of those churches. Cholesterol screening, using a Reflotron, and other coronary heart disease risk factor screening was conducted in six churches with predominantly black members and at a neighborhood library. A total of 348 persons with cholesterol levels of 200 milligrams per deciliter (mg per dl) or higher were identified. At the time of screening, all were provided brief counseling on lowering their cholesterol and were given a copy of the screening results. Half of those identified, all members of one church, were invited to attend a 6-week nutrition education class of 1 hour each week about techniques to lower blood cholesterol. Information about cholesterol was also mailed to them. They were designated as the education group. Persons in the church were trained to teach the classes. A report of the screening results was sent to the personal physicians of the remaining 174 people in other churches who had cholesterol levels of 200 mg per dl or higher. This group served as a usual care comparison group.Six months after the initial screening, members of both groups were invited for followup screening.Among the 75 percent of the education group who returned for followup screening there was a 23.4 mg per dl (10 percent) decrease in the mean cholesterol level. Thirty-six percent of the usual care group returned for followup screening; their mean cholesterol

  8. Acyl-coenzyme A:cholesterol acyltransferases

    OpenAIRE

    Chang, Ta-Yuan; Li, Bo-Liang; Chang, Catherine C.Y.; Urano, Yasuomi

    2009-01-01

    The enzymes acyl-coenzyme A (CoA):cholesterol acyltransferases (ACATs) are membrane-bound proteins that utilize long-chain fatty acyl-CoA and cholesterol as substrates to form cholesteryl esters. In mammals, two isoenzymes, ACAT1 and ACAT2, encoded by two different genes, exist. ACATs play important roles in cellular cholesterol homeostasis in various tissues. This chapter summarizes the current knowledge on ACAT-related research in two areas: 1) ACAT genes and proteins and 2) ACAT enzymes as...

  9. Genetic therapies to lower cholesterol.

    Science.gov (United States)

    Khoo, Bernard

    2015-01-01

    This review surveys the state-of-the-art in genetic therapies for familial hypercholesterolaemia (FH), caused most commonly by mutations in the LDL receptor (LDLR) gene. FH manifests as highly elevated low density lipoprotein (LDL) cholesterol levels and consequently accelerated atherosclerosis. Modern pharmacological therapies for FH are insufficiently efficacious to prevent premature cardiovascular disease, can cause significant adverse effects and can be expensive. Genetic therapies for FH have been mooted since the mid 1990s but gene replacement strategies using viral vectors have so far been unsuccessful. Other strategies involve knocking down the expression of Apolipoprotein B100 (APOB100) and the protease PCSK9 which designates LDLR for degradation. The antisense oligonucleotide mipomersen, which knocks down APOB100, is currently marketed (with restrictions) in the USA, but is not approved in Europe due to its adverse effects. To address this problem, we have devised a novel therapeutic concept, APO-skip, which is based on modulation of APOB splicing, and which has the potential to deliver a cost-effective, efficacious and safe therapy for FH.

  10. Nanopatterning and tuning of optical taper antenna apex for tip-enhanced Raman scattering performance

    Science.gov (United States)

    Kharintsev, S. S.; Rogov, A. M.; Kazarian, S. G.

    2013-09-01

    This paper focuses on finding optimal electrochemical conditions from linear sweep voltammetry analysis for preparing highly reproducible tip-enhanced Raman scattering (TERS) conical gold tips with dc-pulsed voltage etching. Special attention is given to the reproducibility of tip apex shapes with different etchant mixtures. We show that the fractional Brownian motion model enables a mathematical description of the decaying current kinetics during the whole etching process up to the cutoff event. Further progress in preparation of highly reproducible smooth and sharp tip apexes is related to the effect of an additive, such as isopropanol, to aqueous acids. A finite-difference time-domain method based near-field analysis provides evidence that TERS performance depends critically on tip orientation relative to a highly focused laser beam. A TERS based criterion for recognizing gold tips able to couple/decouple optical near- and far-fields is proposed.

  11. Nanopatterning and tuning of optical taper antenna apex for tip-enhanced Raman scattering performance.

    Science.gov (United States)

    Kharintsev, S S; Rogov, A M; Kazarian, S G

    2013-09-01

    This paper focuses on finding optimal electrochemical conditions from linear sweep voltammetry analysis for preparing highly reproducible tip-enhanced Raman scattering (TERS) conical gold tips with dc-pulsed voltage etching. Special attention is given to the reproducibility of tip apex shapes with different etchant mixtures. We show that the fractional Brownian motion model enables a mathematical description of the decaying current kinetics during the whole etching process up to the cutoff event. Further progress in preparation of highly reproducible smooth and sharp tip apexes is related to the effect of an additive, such as isopropanol, to aqueous acids. A finite-difference time-domain method based near-field analysis provides evidence that TERS performance depends critically on tip orientation relative to a highly focused laser beam. A TERS based criterion for recognizing gold tips able to couple/decouple optical near- and far-fields is proposed.

  12. Nanopatterning and tuning of optical taper antenna apex for tip-enhanced Raman scattering performance

    Energy Technology Data Exchange (ETDEWEB)

    Kharintsev, S. S.; Rogov, A. M. [Department of Optics and Nanophotonics, Institute of Physics, Kazan Federal University, Kremlevskaya 16, Kazan 420008 (Russian Federation); Kazarian, S. G. [Department of Chemical Engineering, Imperial College London, London SW7 2AZ (United Kingdom)

    2013-09-15

    This paper focuses on finding optimal electrochemical conditions from linear sweep voltammetry analysis for preparing highly reproducible tip-enhanced Raman scattering (TERS) conical gold tips with dc-pulsed voltage etching. Special attention is given to the reproducibility of tip apex shapes with different etchant mixtures. We show that the fractional Brownian motion model enables a mathematical description of the decaying current kinetics during the whole etching process up to the cutoff event. Further progress in preparation of highly reproducible smooth and sharp tip apexes is related to the effect of an additive, such as isopropanol, to aqueous acids. A finite-difference time-domain method based near-field analysis provides evidence that TERS performance depends critically on tip orientation relative to a highly focused laser beam. A TERS based criterion for recognizing gold tips able to couple/decouple optical near- and far-fields is proposed.

  13. Effects of Dissolving Solutions on the Accuracy of an Electronic Apex Locator-Integrated Endodontic Handpiece

    Science.gov (United States)

    Ustun, Yakup; Uzun, Ozgur; Er, Ozgur; Maden, Murat; Yalpı, Fatma; Canakci, Burhan Can

    2013-01-01

    The effects of three dissolving agents on the accuracy of an electronic apex locator- (EAL-) integrated endodontic handpiece during retreatment procedures were evaluated. The true lengths (TLs) of 56 extracted incisor teeth were determined visually. Twenty teeth were filled with gutta-percha and a resin-based sealer (group A), 20 with gutta-percha and a zinc oxide/eugenol-based sealer (group B), and 16 roots were used as the control group (group C). All roots were prepared to TL. Guttasolv, Resosolv, and Endosolv E were used as the dissolving solutions. Two evaluations of the handpiece were performed: the apical accuracy during the auto reverse function (ARL) and the apex locator function (EL) alone. The ARL function of the handpiece gave acceptable results. There were significant differences between the EL mode measurements and the TL (P < 0.05). In these comparisons, Tri Auto ZX EL mode measurements were significantly shorter than those of the TL. PMID:24379743

  14. An in vivo comparison of gradient and absolute impedance electronic apex locators.

    Science.gov (United States)

    Lauper, R; Lutz, F; Barbakow, F

    1996-05-01

    Two electronic apex locators based on the gradient (Apit) and absolute (Odontometer) impedance principles were evaluated. Distances of file tips to apical foramina were determined in vivo with the electronic apex locators and subsequently verified after extraction. Mean differences between file tips and apical foramina were +0.14 +/- 0.27 mm and -0.36 +/- 0.71 mm for the Apit and Odontometer, respectively. These differences were statistically significant (p apical foramen, respectively. Ninety-three and 73% of the findings for the Apit and the Odontometer, respectively, were within the +/- 0.5 mm range, whereas 100% and 86%, respectively, were within the +/- 1.0 mm range. Thirty-three and 43% of the results for the Apit and the Odontometer, respectively, were 1.0 mm or less coronal to the apical foramen. The Apit tended to yield the more reliable results because of the narrower range.

  15. Results from the NRC AP600 testing program at the Oregon State University APEX facility

    Energy Technology Data Exchange (ETDEWEB)

    Reyes, J.N. Jr. [Oregon State Univ., Corvallis, OR (United States); Bessette, D.E. [Nuclear regulatory Systems, Washington, DC (United States); DiMarzo, M. [Univ. of Maryland, College Park, MD (United States)

    1996-03-01

    The Department of Nuclear Engineering at Oregon State University (OSU) is performing a series of confirmatory tests for the U.S. Nuclear Regulatory Commission. These tests are being conducted in the Advanced Plant Experiment (APEX) facility which is a 1/4 length scale and 1/192 volume scale integral system simulation of the Westinghouse Advanced Passive 600 MWe (AP600) plant. The purpose of the testing program is to examine AP600 passive safety system performance, particularly during long term cooling. Thus far, OSU has successfully performed ten integral system tests for the NRC. This paper presents a description of the APEX facility and summarizes the important results of the NRC test program at OSU.

  16. A case of orbital apex syndrome due to Pseudomonas aeruginosa infection

    Directory of Open Access Journals (Sweden)

    Takeshi Kusunoki

    2011-11-01

    Full Text Available Orbital apex syndrome is commonly been thought to have a poor prognosis. Many cases of this syndrome have been reported to be caused by paranasal sinus mycosis. We encountered a very rare case (60-year-old woman of sinusitis with orbital apex syndrome due to Pseudomonas aeruginosa infection. She had received insulin and dialysis for diabtes and diabetic nephropathy, moreover anticoagulants after heart by-pass surgery. She underwent endoscopic sinus operation and was treated with antibiotics, but her loss of left vision did not improve. Recently, sinusitis cases due to Pseudomonas aeruginosa were reported to be a increasing. Therefore, we should consider the possibility of Pseudomonas aeruginosa as well as mycosis as infections of the sinus, especially inpatients who are immunocompromised body.

  17. A case of orbital apex syndrome due to Pseudomonas aeruginosa infection.

    Science.gov (United States)

    Kusunoki, Takeshi; Kase, Kaori; Ikeda, Katsuhisa

    2011-09-28

    Orbital apex syndrome is commonly been thought to have a poor prognosis. Many cases of this syndrome have been reported to be caused by paranasal sinus mycosis. We encountered a very rare case (60-year-old woman) of sinusitis with orbital apex syndrome due to Pseudomonas aeruginosa infection. She had received insulin and dialysis for diabtes and diabetic nephropathy, moreover anticoagulants after heart by-pass surgery. She underwent endoscopic sinus operation and was treated with antibiotics, but her loss of left vision did not improve. Recently, sinusitis cases due to Pseudomonas aeruginosa were reported to be a increasing. Therefore, we should consider the possibility of Pseudomonas aeruginosa as well as mycosis as infections of the sinus, especially inpatients who are immunocompromised body.

  18. [Cholesterol and atherosclerosis. Historical considerations and treatment].

    Science.gov (United States)

    Zárate, Arturo; Manuel-Apolinar, Leticia; Basurto, Lourdes; De la Chesnaye, Elsa; Saldívar, Iván

    2016-01-01

    Cholesterol is a precursor of steroid hormones and an essential component of the cell membrane, however, altered regulation of the synthesis, absorption and excretion of cholesterol predispose to cardiovascular diseases of atherosclerotic origin. Despite, the recognition of historical events for 200 years, starting with Michel Chevreul naming «cholesterol»; later on, Lobstein coining the term atherosclerosis and Marchand introducing it, Anichkov identifying cholesterol in atheromatous plaque, and Brown and Goldstein discovering LDL receptor; as well as the emerging of different drugs, such as fibrates, statins and cetrapibs this decade, promising to increase HDL and the most recent ezetimibe and anti-PCSK9 to inhibit the degradation of LDL receptor, however morbidity has not been reduced in cardiovascular disease.

  19. Determining the Biogenicity of Microfossils in the Apex Chert, Western Australia, Using Transmission Electron Microscopy

    Science.gov (United States)

    DeGregorio, B. T.; Sharp, T. G.

    2003-01-01

    For over a decade, the oldest evidence for life on this planet has been microfossils in the 3.5 Ga Apex Chert in Western Australia. Recently, the biogenicity of these carbon-rich structures has been called into question through reanalysis of the local geology and reinterpretation of the original thin sections. Although initially described as a stratiform, bedded chert of siliceous clasts, the unit is now thought to be a brecciated hydrothermal vein chert. The high temperatures of a hydrothermal environment would probably have detrimental effects to early non-hyperthermophilic life, compared to that of a shallow sea. Conversely, a hydrothermal origin would suggest that if the microfossils were valid, they might have been hyperthermophilic. Apex Chert controversy. The Apex Chert microfossils were originally described as septate filaments composed of kerogen similar in morphology to Proterozoic and modern cyanobacteria. However new thin section analysis shows that these carbonaceous structures are not simple filaments. Many of the original microfossils are branched and have variable thickness when the plane of focus is changed. Hydrothermal alteration of organic remains has also been suggested for the creation of these strange morphologies. Another point of contention lies with the nature of the carbon material in these proposed microfossils. Kerogen is structurally amorphous, but transforms into well-ordered graphite under high pressures and temperatures. Raman spectrometry of the carbonaceous material in the proposed microfossils has been interpreted both as partially graphitized kerogen and amorphous graphite. However, these results are inconclusive, since Raman spectrometry cannot adequately discriminate between kerogen and disordered graphite. There are also opposing views for the origin of the carbon in the Apex Chert. The carbon would be biogenic if the proposed microfossils are indeed the remains of former living organisms. However, an inorganic Fischer

  20. High resolution NO2 remote sensing from the Airborne Prism EXperiment (APEX imaging spectrometer

    Directory of Open Access Journals (Sweden)

    B. Buchmann

    2012-03-01

    Full Text Available We present and evaluate the retrieval of high spatial resolution maps of NO2 vertical column densities (VCD from the Airborne Prism EXperiment (APEX imaging spectrometer. APEX is a novel instrument providing airborne measurements of unique spectral and spatial resolution and coverage as well as high signal stability. In this study, we use spectrometer data acquired over Zurich, Switzerland, in the morning and late afternoon during a flight campaign on a cloud-free summer day in June 2010. NO2 VCD are derived with a two-step approach usually applied to satellite NO2 retrievals, i.e. a DOAS analysis followed by air mass factor calculations based on radiative transfer computations. Our analysis demonstrates that APEX is clearly sensitive to NO2 VCD above typical European tropospheric background abundances (>1 × 1015 molec cm−2. The two-dimensional maps of NO2 VCD reveal a very plausible spatial distribution with strong gradients around major NOx sources (e.g. Zurich airport, waste incinerator, motorways and low NO2 in remote areas. The morning overflights resulted in generally higher NO2 VCD and a more distinct pattern than the afternoon overflights which can be attributed to the meteorological conditions prevailing during that day (development of the boundary layer and increased wind speed in the afternoon as well as to photochemical loss of NO2. The remotely sensed NO2 VCD are also highly correlated with ground-based in-situ measurements from local and national air quality networks (R=0.73. Airborne NO2 remote sensing using APEX will be valuable to detect NO2 emission sources, to provide input for NO2 emission modeling, and to establish links between in-situ measurements, air quality models, and satellite NO2 products.