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Sample records for blazei contra ralstonia

  1. 巴氏菇Agaricus blazei murrill栽培新法初步研究%PRELIMINARY STUDIES ON NEW METHOD FOR CULTIUATING AGARICUS BLAZEI MURRILL

    Institute of Scientific and Technical Information of China (English)

    杨旭

    2000-01-01

    A technique for cultivating agaricus blazei murrill is reported. The technique used bagasse, in stead of muck as material, and through the secondary fermention of cultivated material to cultivate.%本文报导了以苷蔗渣为原料,不用粪肥,经栽培料二次发酵生产agaricus blazei murrill技术.

  2. Auraalne Contra / Hasso Krull

    Index Scriptorium Estoniae

    Krull, Hasso, 1964-

    2001-01-01

    Bibliogr. joonealustes märkustes. Rets. rmt. : Contra [Konnula, Margus]. Suusamütsi tutt : luulet aastatest 1974-2000. Urvaste ; Tartu : Mina Ise, 2001; Contra [Konnula, Margus]. Contra on õhk : [helikassett]. Urvaste :¡ Mina Ise, 2000

  3. Cultivation of Agaricus blazei on Pleurotus spp. spent substrate

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    Regina Maria Miranda Gern

    2010-08-01

    Full Text Available The aim of this work was the use of Pleurotus ostreatus and Pleurotus sajor-caju for the previous lignocellulolytic decomposition of banana tree leaf straw and the further use of the degraded straw as substrate for the culture of Agaricus blazei. For optimising the production of A. blazei in terms of yield (Y% and biological efficiency (BE%, adjustments to the composition of the substrate were evaluated in a 2(5 experimental design. The following components were tested in relation to % of substrate dry mass: urea (1 and 10%, rice bran (10 or 20% or ammonium sulphate (0 or 10%, inoculum (10 or 20% and the casing material (subsoil or burned rice husks. The best results (79.71 Y% and 6.73 BE% were found when the substrate containing 10% of rice bran, without ammonium sulphate, inoculated with 20% and covered with subsoil was used.O cultivo de fungos comestíveis e medicinais utilizando resíduos da agroindústria vem se apresentando como uma alternativa econômica para o pequeno produtor rural, favorecendo a agricultura familiar do nordeste catarinense. Este trabalho avaliou o fungo Pleurotus para a decomposição lignocelulolítica de palha de folhas de bananeira e a utilização da palha residual como substrato para o cultivo de Agaricus blazei. Ajustes na composição do substrato residual de Pleurotus, tais como o tipo e a concentração da fonte de nitrogênio, a porcentagem de inóculo e a camada de cobertura, foram avaliadas. O substrato residual que mais favoreceu a produção de A. blazei em Eficiência Biológica (6,73%, Rendimento (79,71% e menor tempo para emissão do primeiro primórdio (27 dias foi o substrato residual de P. ostreatus inoculado com 20% de inóculo (ms, 10% de farelo de arroz (ms, sem sulfato de amônio e utilizando terra de subsolo como camada de cobertura.

  4. Agaricus blazei, supstrat za proizvodnju β-1,3-glukanaze s pomoću Trichoderma harzianum Rifai

    OpenAIRE

    Carneiro, Andréia A. J.; Giese, Ellen C.; Barbosa, Aneli M.; Gomes, Eleni; da Silva, Roberto

    2011-01-01

    Ekstrakt gljive Agaricus blazei (Agaricus brasiliensis) upotrijebljen je kao supstrat za proizvodnju β-1,3-glukanaze submerznim uzgojem plijesni Trichoderma harzianum Rifai. Centralno složeni 22 faktorijalni dizajn razvijen je primjenom ovih varijabla: vrijeme uzgoja (x1/dan) i koncentracija ekstrakta Agaricus blazei (x2/(g/L)), a rezultati su analizirani metodom odzivnih površina (RSM). Rezultati pokazuju da je koncentracija ekstrakta Agaricus blazei najvažnija varijabla za proizvodnju β-1,3...

  5. Ipomoea batatas and Agarics blazei ameliorate diabetic disorders with therapeutic antioxidant potential in streptozotocin-induced diabetic rats

    OpenAIRE

    Niwa, Atsuko; Tajiri, Takashi; Higashino, Hideaki

    2011-01-01

    Ipomoea batatas, Agaricus blazei and Smallanthus sonchifolius are known to favorably influence diabetes mellitus. To clarify their antidiabetic efficacy and hypoglycemic mechanisms, we treated streptozotocin-induced diabetic rats with daily oral feeding of powdered Ipomoea batatas (5 g kg−1 d−1), Agaricus blazei (1 g kg−1 d−1) or Smallanthus sonchifolius (4 g kg−1 d−1) for 2 months. Treatments with Ipomoea batatas or Agaricus blazei, but not Smallanthus sonchifolius, significantly suppressed ...

  6. IL-12 Production Induced by Agaricus blazei Fraction H (ABH) Involves Toll-like Receptor (TLR)

    OpenAIRE

    Kasai, H.; He, L. M.; Kawamura, M.; Yang, P. T.; Deng, X. W.; Munkanta, M.; Yamashita, A; H Terunuma; Hirama, M.; Horiuchi, I.; Natori, T.; Koga, T; Y. Amano; Yamaguchi, N.; Ito, M

    2004-01-01

    Agaricus blazei Murill is an edible fungus used in traditional medicine, which has various well-documented medicinal properties. In the present study, we investigated the effects of hemicellulase-derived mycelia extract (Agaricus blazei fraction H: ABH) on the immune system. First, we examined the cytokine-inducing activity of ABH on human peripheral mononuclear cells (PBMC). The results indicated that ABH induced expression of IL-12, a cytokine known to be a critical regulator of cellular im...

  7. Use of Agaricus blazei and Lentinula edodes extracts for post-harvest control of gray mold in ‘Itália’ grape Extracto de Agaricus blazei y Lentinula edodes en el control de podredumbre gris en uva ‘Itália’ Extrato de Agaricus blazei e Lentinula edodes no controle pós-colheita de mofo cinzento em uva ‘Itália’

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    ELISANGELA CLARETE CAMILI

    2010-04-01

    Full Text Available

    Na proteção de uva ‘Itália’ pós-colheita contra Botrytis cinerea avaliou-se in vivo o efeito direto e indireto dos extratos aquosos dos cogumelos Agaricus blazei e Lentinula edodes através do tratamento dos cachos antes ou após a inoculação com o patógeno. Para tanto se realizaram dois ensaios: 1 cachos de uva foram inoculados e, após 4 h, aspergidos com diferentes concentrações dos extratos dos basidiocarpos (0,0; 2,5; 5,0; 10,0; 20,0 ou 40,0%; 2 cachos foram, ou não, aspergidos com extrato de A. blazei (5,0% 24, 48, 72 ou 96 h antes da inoculação do fungo. Para inoculação, em cada cacho foram feridas 10 bagas, fazendo-se um furo por baga de ±2 mm de profundidade, procedendo-se em seguida, a aspersão da suspensão de conídios (±105 conídios mL-1. Após os tratamentos, os cachos foram mantidos a 25±1 ºC/80-90% UR e avaliados diariamente quanto à incidência e severidade da podridão. O efeito in vitro dos extratos de A. blazei e L. edodes no controle do patógeno foi avaliado com o intuito de verificar se tais agentes exercem efeito direto sobre o crescimento micelial e a germinação de conídios de B. cinerea. Os resultados mostraram que os extratos de A. blazei e L. edodes não controlaram a podridão causada por B. cinerea em uva ‘Itália’, quando aplicados antes ou após a inoculação do fungo. Nos ensaios in vitro, ambos os extratos dos basidiocarpos estimularam a germinação dos conídios de B. cinerea nas concentrações testadas; quanto ao crescimento micelial, L. edodes retardou, enquanto A. blazei estimulou.

    For protecting ‘Itália’ against Botrytis cinerea in the post harvest it was evaluated in vivo direct and indirect effect of water based extracts of Agaricus blazei and Lentinula edodes

  8. Effect of different compounds on the induction of laccase production by Agaricus blazei.

    Science.gov (United States)

    Valle, J S; Vandenberghe, L P S; Oliveira, A C C; Tavares, M F; Linde, G A; Colauto, N B; Soccol, C R

    2015-01-01

    Laccases are polyphenol oxidases produced by many fungi and have many applications in textile, food and beverage, and pulp and paper industries. Laccase production can be induced using aromatic or phenolic compounds that mostly affect the transcription of laccase-encoding genes. In this study, we analyzed laccase and biomass production by Agaricus blazei in the presence of different concentrations of nitrogen, copper, and inducers such as pyrogallol, veratryl alcohol, xylidine, vanillin, guaiacol, and ethanol. Laccase production by A. blazei U2-4 reached 43.8 U/mL in the presence of 2.8 g/L nitrogen and 150 μM copper. However, addition of copper to the cultivation medium decreased biomass production. Different compounds differentially induced laccase production by A. blazei. Moreover, different concentrations of these inducers exerted different effects on laccase activity. Ethanol (1.0 mM), guaiacol (0.5 mM), and vanillin (0.5 mM) were the best inducers and increased laccase activity by 120% (A. blazei U2-2), 30% (A. blazei U2-3), and 9% (A. blazei U2-4), respectively. In contrast, pyrogallol and xylidine decreased laccase activity but increased biomass production. PMID:26634556

  9. Agaricus Blazei Hot Water Extract Shows Anti Quorum Sensing Activity in the Nosocomial Human PathogenPseudomonas Aeruginosa

    NARCIS (Netherlands)

    Sokovic, M.; Ciric, A.; Glamoclija, J.; Nicolic, M.; Griensven, van L.J.L.D.

    2014-01-01

    The edible mushroom Agaricus blazei Murill is known to induce protective immunomodulatory action against a variety of infectious diseases. In the present study we report potential anti-quorum sensing properties of A. blazei hot water extract. Quorum sensing (QS) plays an important role in virulence,

  10. Production flush of Agaricus blazei on Brazilian casing layers

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    Nelson Barros Colauto

    2011-06-01

    Full Text Available This study aimed to verify the biological efficiency and production flushes of Agaricus blazei strains on different casing layers during 90 cultivation days. Four casing layers were used: mixture of subsoil and charcoal (VCS, lime schist (LSC, São Paulo peat (SPP and Santa Catarina peat (SCP; and two genetically distant A. blazei strains. The fungus was grown in composted substratum and, after total colonization, a pasteurized casing layer was added over the substratum, and fructification was induced. Mushrooms were picked up daily when the basidiocarp veil was stretched, but before the lamella were exposed. The biological efficiency (BE was determined by the fresh basidiocarp mass divided by the substratum dry mass, expressed in percentage. The production flushes were also determined over time production. The BE and production flushes during 90 days were affected by the strains as well as by the casing layers. The ABL26 and LSC produced the best BE of 60.4%. Although VCS is the most used casing layer in Brazil, it is inferior to other casing layers, for all strains, throughout cultivation time. The strain, not the casing layer, is responsible for eventual variations of the average mushroom mass. In average, circa 50% of the mushroom production occurs around the first month, 30% in the second month, and 20% in third month. The casing layer water management depends on the casing layer type and the strain. Production flush responds better to water reposition, mainly with ABL26, and better porosity to LSC and SCP casing layers.

  11. Genetic characterization of isolates of the basidiomycete Agaricus blazei by RAPD

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    Colauto Nelson Barros

    2002-01-01

    Full Text Available The genetic divergence of five isolates of Agaricus blazei was determined based on RAPD data. Results indicate that there is little genetic variability among the commercialized strains and that RAPD is a feasible and low cost technique that can be used to characterize this fungus.

  12. Genetic characterization of isolates of the basidiomycete Agaricus blazei by RAPD

    OpenAIRE

    Colauto Nelson Barros; Dias Eustáquio Souza; Gimenes Marcos Aparecido; Eira Augusto Ferreira da

    2002-01-01

    The genetic divergence of five isolates of Agaricus blazei was determined based on RAPD data. Results indicate that there is little genetic variability among the commercialized strains and that RAPD is a feasible and low cost technique that can be used to characterize this fungus.

  13. Cytotoxicity and genotoxicity of Agaricus blazei methanolic extract fractions assessed using gene and chromosomal mutation assays

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    Marilanda Ferreira Bellini

    2008-01-01

    Full Text Available Functional food investigations have demonstrated the presence of substances that could be beneficial to human health when consumed. However, the toxic effects of some substances contained in foods have been determined. Reported medicinal and nutritive properties have led to the extensive commercialization of the basidiomycete fungi Agaricus blazei Murrill (sensu Heinemann, also known as Agaricus brasiliensis Wasser et al., Agaricus subrufescens Peck or the Brazilian medical mushroom (BMM. Different methanolic extract fractions (ME of this mushroom were submitted to the cytokinesis-block micronucleus (CBMN clastogenic assay and the hypoxanthine-guanine phosphoribosyl transferase locus (HGPRT assay for gene mutation, both using Chinese hamster ovary cells clone K1 (CHO-K1. The results suggest that all the fractions tested possess cytotoxic and mutagenic potential but no clastogenic effects. Further information is needed on the biochemical components of the A. blazei methanol fractions to identify any substances with cytotoxic and/or mutagenicity potential. These findings indicate that A. blazei methanolic extract should not be used due to their genotoxicity and care should be taken in the use of A. blazei by the general population until further biochemical characterization of this fungi is completed.

  14. Agaricus Blazei Hot Water Extract Shows Anti Quorum Sensing Activity in the Nosocomial Human Pathogen Pseudomonas Aeruginosa

    OpenAIRE

    Marina Soković; Ana Ćirić; Jasmina Glamočlija; Miloš Nikolić; Van Griensven, Leo J. L. D.

    2014-01-01

    The edible mushroom Agaricus blazei Murill is known to induce protective immunomodulatory action against a variety of infectious diseases. In the present study we report potential anti-quorum sensing properties of A. blazei hot water extract. Quorum sensing (QS) plays an important role in virulence, biofilm formation and survival of many pathogenic bacteria, including the Gram negative Pseudomonas aeruginosa, and is considered as a novel and promising target for anti-infectious agents. In thi...

  15. Chemical, enzymatic and cellular antioxidant activity studies of Agaricus blazei Murrill

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    RICARDO A. HAKIME-SILVA

    2013-09-01

    Full Text Available Mushrooms possess nutritional and medicinal properties that have long been used for human health preservation and that have been considered by researchers as possible sources of free radical scavengers. In this work, the antioxidant properties of water extracts from Agaricus blazei Murill, produced by maceration and decoction, are demonstrated in vitro. Resistance to oxidation is demonstrated through three mechanisms: i inhibition of enzymatic oxidative process, with 100% inhibition of HRP (horseradish peroxidase and MPO (myeloperoxidase; ii inhibition of cellular oxidative stress, with 80% inhibition of the oxidative burst of polymorphonuclear neutrophils (PMNs; and iii direct action over reactive species, with 62% and 87% suppression of HOCl and superoxide anion radical (O2• –, respectively. From the data, it was concluded that the aqueous extract of A. blazei has significant antioxidant activity, indicating its possible application for nutraceutical and medicinal purposes.

  16. Cytotoxicity and genotoxicity of Agaricus blazei methanolic extract fractions assessed using gene and chromosomal mutation assays

    OpenAIRE

    Marilanda Ferreira Bellini; Leonardo Neves Cabrioti; Ana Paula Terezan; Berenice Quinzani Jordão; Lúcia Regina Ribeiro; Mário Sérgio Mantovani

    2008-01-01

    Functional food investigations have demonstrated the presence of substances that could be beneficial to human health when consumed. However, the toxic effects of some substances contained in foods have been determined. Reported medicinal and nutritive properties have led to the extensive commercialization of the basidiomycete fungi Agaricus blazei Murrill (sensu Heinemann), also known as Agaricus brasiliensis Wasser et al., Agaricus subrufescens Peck or the Brazilian medical mushroom (BMM). D...

  17. The Medicinal Mushroom Agaricus blazei Murrill: Review of Literature and Pharmaco-Toxicological Problems

    OpenAIRE

    F.Firenzuoli; Gori, L.; Lombardo, G.

    2007-01-01

    Agaricus blazei Murrill (ABM) popularly known as ‘Cogumelo do Sol’ in Brazil, or ‘Himematsutake’ in Japan, is a mushroom native to Brazil, and widely cultivated in Japan for its medicinal uses, so it is now considered as one of the most important edible and culinary-medicinal biotechnological species. It was traditionally used to treat many common diseases like atherosclerosis, hepatitis, hyperlipidemia, diabetes, dermatitis and cancer. In vitro and in vivo ABM has shown immunomodulatory and ...

  18. The Medicinal Values of Culinary-Medicinal Royal Sun Mushroom (Agaricus blazei Murrill)

    OpenAIRE

    Hang Wang; Zhiming Fu; Chunchao Han

    2013-01-01

    Agaricus blazei Murrill (ABM), a mushroom native to Brazil, is a basidiomycete brown fungus, which is popularly known as “Cogumelo do Sol” in Brazil or “Himematsutake” in Japan, and there has been a prominent increase in the use of ABM for therapeutic and medicinal purposes. ABM is useful against a variety of diseases like cancer, tumor, chronic hepatitis, diabetes, atherosclerosis, hypercholesterolemia, and so on. In this review, we demonstrated various pharmacological effects of ABM, so tha...

  19. Agarol, an ergosterol derivative from Agaricus blazei, induces caspase-independent apoptosis in human cancer cells.

    Science.gov (United States)

    Shimizu, Takamitsu; Kawai, Junya; Ouchi, Kenji; Kikuchi, Haruhisa; Osima, Yoshiteru; Hidemi, Rikiishi

    2016-04-01

    Agaricus blazei (A. blazei) is a mushroom with many biological effects and active ingredients. We purified a tumoricidal substance from A. blazei, an ergosterol derivative, and named it 'Agarol'. Cytotoxic effects of Agarol were determined by the MTT assay using A549, MKN45, HSC-3, and HSC-4 human carcinoma cell lines treated with Agarol. Apoptosis was detected by flow cytometry analysis. Reactive oxygen species (ROS) levels and mitochondria membrane potential (∆ψm) were also determined by flow cytometry. Western blot analysis was used to quantify the expression of apoptosis-related proteins. Agarol predominantly induced apoptosis in two p53-wild cell lines (A549 and MKN45) compared to the other p53-mutant cell lines (HSC-3 and HSC-4). Further mechanistic studies revealed that induction of apoptosis is associated with increased generation of ROS, reduced ∆ψm, release of apoptosis-inducing factor (AIF) from the mitochondria to the cytosol, upregulation of Bax, and downregulation of Bcl-2. Caspase-3 activities did not increase, and z-VAD-fmk, a caspase inhibitor, did not inhibit the Agarol-induced apoptosis. These findings indicate that Agarol induces caspase-independent apoptosis in human carcinoma cells through a mitochondrial pathway. The in vivo anticancer activity of Agarol was confirmed in a xenograft murine model. This study suggests a molecular mechanism by which Agarol induces apoptosis in human carcinoma cells and indicates the potential use of Agarol as an anticancer agent. PMID:26893131

  20. Composto exaurido do cogumelo Agaricus blazei na dieta de frangos de corte Spent mushroom substrate of Agaricus blazei in broiler chicks diet

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    Alexandre Magno Batista Machado

    2007-08-01

    Full Text Available Avaliou-se o efeito da substituição de um antibiótico por diferentes níveis do composto exaurido do cogumelo (CEC Agaricus blazei sobre o desempenho de frangos de corte de 1 a 42 dias de idade. Foram avaliadas sete dietas, seis com adição de CEC (0,0; 0,2; 0,4; 0,6; 0,8 e 1,0% e uma com antibiótico (avilamicina 10 ppm. Foram utilizados 588 pintos de 1 dia de idade, distribuídos em um delineamento inteiramente casualizado, com seis repetições por dieta (três por sexo e 14 aves por unidade experimental. As aves que não receberam qualquer aditivo na dieta apresentaram os piores resultados de desempenho. Níveis de CEC superiores a 0,4% ocasionaram redução gradual no desempenho. O nível de 0,2% de CEC proporcionou o maior ganho de peso e o de 0,21%, a melhor conversão alimentar e o maior consumo de ração. À exceção do rendimento de peito e do rendimento de gordura abdominal, os aditivos não influenciaram os rendimentos de carcaça e dos cortes. O composto exaurido do cogumelo Agaricus blazei pode ser utilizado como aditivo alternativo ao antibiótico no nível de 0,2% da dieta, pois não prejudicou o desempenho produtivo e o rendimento de carcaça das aves.The effect of the substitution of an antibiotic by different levels of spent mushroom substrate (SMS of Agaricus blazei on the performance of broiler chicks from 1 to 42 days old was evaluated. Seven diets were evaluated, six with SMS addiction (0.0, 0.2, 0.4, 0.6, 0.8, and 1.0% and one with antibiotic (avilamycin 10 ppm. A total of 588 one day old chicks was allotted to a complete randomized design, with six replications per diet (three per sex and 14 birds per experimental unit. The birds fed diet with any additive showed the worst performance results. Levels of SMS above 0.4% caused gradual reduction in the performance. The level of 0.2% of SMS provided the highest value of weight gain and of 0.21% promoted the best feed conversion and the highest value of feed intake

  1. Analgesic Activity of a Glucan Polysaccharide Isolated from Agaricus blazei Murill

    OpenAIRE

    Maria Leônia C. Gonzaga; Menezes, Thiago M. F.; de Souza, José R. R.; Nágila M. P. S. Ricardo; Ana L. P. Freitas; Sandra de A. Soares

    2013-01-01

    A water soluble polysaccharide and its selective precipitated fractions (F1, F2, and F3) were isolated from hot water extract of fruiting bodies of Agaricus blazei Murril known as Agaricus brasiliensis to evaluate the analgesic activity of the materials in Swiss mice. The isolated material and its fractions were characterized by two-dimensional COSY and HMQC spectra as β-(1→6)-α-(1→4)-glucan-bound-protein polysaccharide constituted mainly by β-(1→6) glucan. The glucan-protein polysaccharide a...

  2. Study on Several Characteristics of Agaricus blazei Murril Strain J3 Irradiated by 60Co

    Institute of Scientific and Technical Information of China (English)

    WENG Bo-qi; JIANG Zhi-he; HUANG Ting-jun; CHEN Jian; ZHENG Wei-wen

    2003-01-01

    A new mutant strain J3 from Agaricus blazei Murril was obtained by 60Co irradiation. The yields of successive generations were increased more than 70% to compare with their original strain. The component analysis on amino acids and fatty acid illuminated that the nutrient value of strain J3 fruiting body was better than the original strain. The apparent nodule structure was found in the hyphea of J3 strain through the observation by scanning electron microscope. RAPD analysis showed the great difference of PCR fingerprints between J3 and its original strain. It is a promising mutant strain for further commercial development in the future.

  3. Coloração de núcleos de esporos e hifas do cogumelo Agaricus blazei Nucleus stain of spores and hifas Ofagaricus blazei

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    Cláudia Regina Gontijo Labory

    2003-04-01

    Full Text Available Com o objetivo de se estudar o comportamento nuclear durante o ciclo sexual do cogumelo Agaricus blazei , técnicas de coloração e a utilização de fluorocromos foram testadas, visando a uma padronização metodológica para estudos citogenéticos futuros. Das técnicas avaliadas neste trabalho (método de Feulgen, coloração com Giemsa e fluorescência-DAPI, a coloração com Giemsa e o fluorocromo DAPI apresentaram os melhores resultados para evidenciar núcleos. O corante Giemsa permitiu a visualização de compartimentos multinucleados. Com o DAPI, não foi possível a visualização dos septos, sendo necessária a utilização adicional de calcofluor, que tem a propriedade de corar a quitina que delimita os compartimentos das hifas.In order to study the nuclear behavior during the sexual cycle of Agaricus blazei , some coloration and fluorescent stain techniques were tested for a method standardization for fut ure cytogenetical works. Among the studied techniques (Schiff reactive, Giemsa, and fluorescent stain - DAPI, the Giemsa and fluorescent DAPI technique provided the best results. With Giemsa stain, it was possible to visualize multinucleate cell compartments. It was not possible to stain compartmental delimitation with DAPI stain, which was possible only with an additional fluorescent stain - calcofluor, which is specific for chitin.

  4. Agaricus Blazei Hot Water Extract Shows Anti Quorum Sensing Activity in the Nosocomial Human Pathogen Pseudomonas Aeruginosa

    Directory of Open Access Journals (Sweden)

    Marina Soković

    2014-04-01

    Full Text Available The edible mushroom Agaricus blazei Murill is known to induce protective immunomodulatory action against a variety of infectious diseases. In the present study we report potential anti-quorum sensing properties of A. blazei hot water extract. Quorum sensing (QS plays an important role in virulence, biofilm formation and survival of many pathogenic bacteria, including the Gram negative Pseudomonas aeruginosa, and is considered as a novel and promising target for anti-infectious agents. In this study, the effect of the sub-MICs of Agaricus blazei water extract on QS regulated virulence factors and biofilm formation was evaluated against P. aeruginosa PAO1. Sub-MIC concentrations of the extract which did not kill P. aeruginosa nor inhibited its growth, demonstrated a statistically significant reduction of virulence factors of P. aeruginosa, such as pyocyanin production, twitching and swimming motility. The biofilm forming capability of P. aeruginosa was also reduced in a concentration-dependent manner at sub-MIC values. Water extract of A. blazei is a promising source of antiquorum sensing and antibacterial compounds.

  5. [Phytotoxic properties of Ralstonia solanacearum lipopolysaccharides].

    Science.gov (United States)

    Hrytsaĭ, R V; Iakovleva, L M; Varbanets', L D

    2014-01-01

    The study is dedicated to research of phytotoxic properties of Ralstonia solanacearum lipopolysaccharides. This causative agent is one of the most dangerous among potato bacterial diseases. It is revealed that the inhibitory effect of LPS solution on seedlings germination is more noticeable on crops susceptible to brown rot. Maximal total phytotoxic properties have been shown by LPS from strains 35, 52b, TX1 and TS3, which were characterized by relatively low rhamnose content. Relative to the control plants LPS may diminish and some ones--increase the root length, height and weight of seedlings, subject to particular strain. But the stimulation revealed is minor. PMID:25000727

  6. Effects of extraction methods on the antioxidant activities of polysaccharides from Agaricus blazei Murrill.

    Science.gov (United States)

    Jia, Shaoyi; Li, Feng; Liu, Yong; Ren, Haitao; Gong, Guili; Wang, Yanyan; Wu, Songhai

    2013-11-01

    Five polysaccharides were obtained from Agaricus blazei Murrill (ABM) through different extraction methods including hot water extraction, single enzyme extraction (pectinase, cellulase or papain) and compound enzymes extraction (cellulase:pectinase:papain). Their characteristics such as the polysaccharide yield, polysaccharide content, protein content, infrared spectra were determined, and antioxidant activities were investigated on the basis of hydroxyl radical, DPPH free radical, ABTS free radical and reducing power. The results showed that five extracts exhibited antioxidant activities in a concentration-dependent manner. Compared with other methods, the compound enzymes extraction method was found to present the highest polysaccharides yield (17.44%). Moreover, compound enzymes extracts exhibited the strongest reducing power and highest scavenging rates on hydroxyl radicals, DPPH radicals and ABTS radicals. On the contrary, hot water extraction method had the lowest polysaccharides yield of 11.95%, whose extracts also exhibited the lowest antioxidant activities. Overall, the available data obtained in vitro models suggested that ABM extracts were natural antioxidants and compound enzymes extraction was an appropriate, mild and effective extracting method for obtaining the polysaccharide extracts from Agaricus blazei Murrill (ABM).

  7. Genotoxic and antigenotoxic effects of organic extracts of mushroom Agaricus blazei Murrill on V79 cells

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    Guterres Zaira da Rosa

    2005-01-01

    Full Text Available Agaricus blazei Murrill, popularly known as the sun mushroom, is a native mushroom in SP, Brazil, that has been widely used in the treatment of cancer and many other pathologies in different parts of the world. A water-soluble protein-polysaccharide complex (1 -> 6beta-D-glucan has been isolated from its fruiting body that showed immune-modulation activity. From organic extracts, linoleic acid has been isolated and determined to be the main substance with antimutagenic activity. Using both the micronucleus (MN and comet (single cell microgel electrophoresis assays, this study determined the genotoxic and antigenotoxic potential of A. blazei (AB obtained from commercial sources or the following strains: a strains AB 97/29 (young and sporulated phases; b a mixture taken from AB 96/07, AB 96/09 and AB 97/11 strains; and c commercial mushrooms from Londrina, PR and Piedade, SP, designated as AB PR and AB SP, respectively. The extracts from these mushrooms were isolated in chloroform:methanol (3:1 and used in vitro at three different concentrations. V79 cells (Chinese hamster lung cells were exposed to the extracts under pre-, simultaneous and post-treatment conditions, combined with methyl methanesulfonate (MMS. Under the circumstances of this study, these organic extracts did not show any genotoxic or mutagenic effects, but did protect cells against the induction of micronuclei by MMS.

  8. Influence of structural features on immunostimulating activity of glucans extracted from Agaricus blazei mushroom

    Directory of Open Access Journals (Sweden)

    Kozarski Maja S.

    2009-01-01

    Full Text Available High molecular weight b-D-glucans derived from Basidiomycetes cell walls are able to specifically activate cellular and humoral components of the host immune system. The aim of this paper was to examine immunomodulating activity of native, chemically and enzimatically modified glucans from Agaricus blazei mushroom and to determine which structural features are of primary importance for their stimulation referring to humane immune cells. The immunomodulating activities were tested in vitro, by stimulation of peripheral blood mononuclear cells (PBMCs and measuring of interferon-gamma (IFN-g production by enzyme linked immunosorbent assay (ELISA. Measurements of immunomodulatory capacity of Agaricus blazei native glucans showed their expressive immunostimulating effect on activated PBMCs and synthesis of IFN-g. The results obtained after the stimulation of cells with 1M H2SO4 and 1M NaOH, the treated glucans showed that primary structure is of more importance than the tertiary structure of the triple helix for their immunostimulating activity and synthesis of IFN-g. Glucans of lower molecular weight obtained after acid hydrolysis appeared as effective immunostimulators of PBMC's. The results obtained after the incubation of cells with 1,6 b-glucanase modified glucans suggest that b-(1,6 binding of glucose monomers probably has no importance for the production of imunostimulating effects, in vitro. This confirmed that b-(1,3 bonds are the primary determinants of immunomodulatory activities and stimulation of IFN-g synthesis.

  9. Literatura contra desarraigo.

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    Xosé A. Perozo Ruiz.

    2008-01-01

    Full Text Available Las reflexiones contenidas en Literatura contra desarraigo son una clara interpretación propia realizadas por Xosé A. Perozo. Nacidas del ejercicio literario constante y productivo nos acerca a conceptos actuales como el nacionalismo o la España de las Autonomías. Desde la lejanía, asistimos a la recuperación de la memoria social extremeña, que se trasluce en las novelas del autor son expuestas de manera biográfica en este artículo metaliterario, donde se detiene en la saga de Los Lancharro, o el personaje de Cerrato, ambientadas en la zona geográfica de la Campiña Sur de la Guerra Civil y posguerra.

  10. Compuesto bactericida contra Campylobacter jejuni

    OpenAIRE

    Gañan, M.; Carrascosa, Alfonso V.; Martínez-Rodríguez, Adolfo J.

    2008-01-01

    Compuesto bactericida contra Campylobacter jejuni. Uso de algunos compuestos fenólicos como agentes antibacterianos contra C jejuni. Además de sus usos para conservación de alimentos, suplemento alimenticio para animales y para la elaboración de una composición farmacéutica para el tratamiento de enfermedades causadas por C. jejuni, debido a su actividad frente a este microorganismos.

  11. Agaricus blazei Murill as an efficient hepatoprotective and antioxidant agent against CCl4-induced liver injury in rats

    OpenAIRE

    Al-Dbass, Abeer M.; Al- Daihan, Sooad K.; Bhat, Ramesa Shafi

    2012-01-01

    Agaricus blazei Murill is one of the very popular edible medicinal mushrooms. The present study investigated the protective effect of this biologically active mushroom on the tissue peroxidative damage and abnormal antioxidant levels in carbon tetrachloride induced hepatotoxicity in male albino rats. Male albino rats of Sprague–Dawley strain weighting (120–150 g) were categorized into five groups. The first group served as the normal control, the second and the third groups were treated with ...

  12. Protoplast Preparation of Jisongrong Mushroom (Agaricus blazei)%姬松茸原生质体的制备

    Institute of Scientific and Technical Information of China (English)

    叶勋艳; 张云

    2005-01-01

    对姬松茸(Agaricus blazei Murrill)原生质体制备的最佳条件进行了研究,结果表明:采用液体发酵培养第 7 d的菌体,用2%溶壁酶在 30 ℃下酶解 5 h,原生质体产率达9.08×10 6个/mL.

  13. Effects of an Agaricus blazei Aqueous Extract Pretreatment on Paracetamol-Induced Brain and Liver Injury in Rats

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    Andréia A. Soares

    2013-01-01

    Full Text Available The action of an Agaricus blazei aqueous extract pretreatment on paracetamol injury in rats was examined not only in terms of the classical indicators (e.g., levels of hepatic enzymes in the plasma but also in terms of functional and metabolic parameters (e.g., gluconeogenesis. Considering solely the classical indicators for tissue damage, the results can be regarded as an indication that the A. blazei extract is able to provide a reasonable degree of protection against the paracetamol injury in both the hepatic and brain tissues. The A. blazei pretreatment largely prevented the increased levels of hepatic enzymes in the plasma (ASP, ALT, LDH, and ALP and practically normalized the TBARS levels in both liver and brain tissues. With respect to the functional and metabolic parameters of the liver, however, the extract provided little or no protection. This includes morphological signs of inflammation and the especially important functional parameter gluconeogenesis, which was impaired by paracetamol. Considering these results and the long list of extracts and substances that are said to have hepatoprotective effects, it would be useful to incorporate evaluations of functional parameters into the experimental protocols of studies aiming to attribute or refute effective hepatoprotective actions to natural products.

  14. Influence of Lentinus edodes and Agaricus blazei extracts on the prevention of oxidation and retention of tocopherols in soybean oil in an accelerated storage test.

    Science.gov (United States)

    da Silva, Ana Carolina; Jorge, Neuza

    2014-06-01

    This study aimed to evaluate the influence of the methanol extracts of mushrooms Lentinus edodes and Agaricus blazei on the retention of tocopherols in soybean oil, when subjected to an accelerated storage test. The following treatments were subjected to an accelerated storage test in an oven at 60 °C for 15 days: Control (soybean oil without antioxidants), TBHQ (soybean oil + 100 mg/kg of TBHQ), BHT (soybean oil + 100 mg/kg of BHT), L. edodes (soybean oil + 3,500 mg/kg of L. edodes extract) and A. blazei (soybean oil + 3,500 mg/kg of A. blazei extract). The samples were analyzed for tocopherols naturally present in soybean oil and mass gain. The results showed, the time required to reach a 0.5% increase in mass was 13 days for TBHQ and 15 days for A. blazei. The content of tocopherols for TBHQ was 457.50 mg/kg and the A. blazei, 477.20 mg/kg. PMID:24876658

  15. Serum hepatic biochemistry and electrophoretic protein profile of healthy and Ehrlich tumor-bearing mice treated with extracts of Agaricus blazei Murill

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    Durval Verçosa Junior

    2016-04-01

    Full Text Available Compounds isolated from Agaricus blazei Murill represent a group of promising natural immunomodulators for use in the treatment of neoplasms. We have evaluated the serum biochemical profile of healthy and Ehrlich tumor-bearing mice treated with different extracts of A. blazei. Total, supernatant, and polysaccharide extracts of A. blazei were obtained from suspensions (at acidic or neutral pH kept in a water bath at 60 °C or in an ultrasonic bath at 37 °C. After oral administering the extracts to mice for 21 days, blood samples were collected for determination of aspartate aminotransferase (AST, alanine aminotransferase (ALT, creatine kinase (CK, urea, total protein, albumin, globulins, and alpha-, beta- and gamma-globulin fractions. The presence of the tumor led to a significant increase in serum CK and AST activities and in the concentrations of total globulin and the gamma-globulin fraction, and to a decrease in the albumin and alpha2-globulin levels. The polysaccharide extracts of A. blazei reduced the serum AST and ALT activities, probably due to a hepatoprotective effect. In addition, polysaccharide and supernatant extracts inhibited the tumor-induced increase in gamma-globulin levels. Thus, the supernatant and polysaccharide fractions of the extract of A. blazei have potential for use in complementary antineoplastic treatments.

  16. La violencia contra las mujeres

    OpenAIRE

    Gil Gómez, Alicia; Escrig Gil, Gemma; Forcada Martínez, Águeda

    2010-01-01

    Las mujeres con diversidad funcional en la agenda jurídico política española: la Ley estatal contra la violencia de género y sus nuevos desafíos,SOLEDAD ARNAU RIPOLLÉS. La violencia contra las mujeres. El estado de la cuestión: Una cuestión de estado. “La violencia en el ámbito laboral”, ENCARNA BARRAGÁN BRITO. El problema de la rehabilitación de los maltratadores, ESPERANZA BOSCH FIOL. La violencia política, LEONORA CASTAÑO CANO. La violencia psicológica, ...

  17. Avaliação in vitro do crescimento micelial de cinco linhagens de Agaricus blazei em duas temperaturas / In vitro evaluation of the mycelial growth of five Agaricus blazei strains in two temperatures

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    Diego Cunha Zied

    2011-04-01

    Full Text Available O objetivo do trabalho foi avaliar o crescimento micelial in vitro de cinco linhagens de Agaricus blazei (ABL-05/53, ABL-04/49, ABL-03/44, ABL-99/30 e ABL-02/51, quando submetidas às temperaturas de 20 e 25ºC. Em câmara de fluxo laminar, discos das linhagens foram inoculadas no centro de placas de Petri contendo o meio CA (composto-ágar e incubadas em estufa BOD. Após 48 horas, iniciaram-se as medidas do crescimento micelial, com auxílio de uma régua graduada em milímetros, através de quatro medições equidistantes entre si, até o momento em que, em um dos tratamentos, a colônia fúngica atingisse a proximidade das bordas da placa de Petri. O delineamento experimental foi inteiramente casualizado, em esquema fatorial 5 x 2. Cada tratamento constou de sete repetições, correspondente a uma placa de Petri, totalizando setenta unidades experimentais. Verificou-se que o crescimento de A. blazei é influenciado pela temperatura de incubação, sendo que a temperatura de 25°C foi mais favorável para o crescimento micelial de todas as linhagens de A. blazei avaliadas, com destaque para as linhagens ABL-04/49 e ABL-03/44 que obtiveram as maiores médias de crescimento micelial nesta condição de temperatura ao final do ciclo de cultivo.AbstractThe objective of the work was to evaluate the in vitro mycelial growth of five A. blazei strains (ABL-05/53, ABL-04/49, ABL-03/44, ABL-99/30 and ABL-02/51 when submitted to the temperatures of 20 and 25 ºC. In a laminar flow chamber, discs of the strains were inoculated in the middle of Petri’s plates containing CA (compost-agar medium and incubated in BOD. After 48 hours, measurements of the mycelial growth began, with the help of a ruler with scale in millimeters, by means of four equidistant measurements, until the moment when the fungal colony reached near the edges of the Petri’s plate in one of the treatments. The experimental design was totally randomized, in 5 x 2 factorial design

  18. Gene transcription analysis during interaction between potato and Ralstonia solanacearum

    NARCIS (Netherlands)

    Li, G.C.; Jin, L.P.; Wang, X.W.; Xie, K.Y.; Yang, Y.; Vossen, van der E.A.G.; Huang, S.W.; Qu, D.Y.

    2010-01-01

    Bacterial wilt (BW) caused by Ralstonia solanacearum (Rs) is an important quarantine disease that spreads worldwide and infects hundreds of plant species. The BW defense response of potato is a complicated continuous process, which involves transcription of a battery of genes. The molecular mechanis

  19. Susceptibility of Geranium Cultivars (Pelargonium spp.) to Ralstonia solanacearum

    Science.gov (United States)

    Sixty-one cultivars of geraniums including zonal, regal, ivy, and scented were tested for susceptibility to three strains of Ralstonia solanacearum: a Race 1 Biovar 1 (R1B1) strain P597 isolated from tomato in Florida, a R1B1 strain P673 obtained from pothos originating in Costa Rica, and a Race 3 B...

  20. Avaliação da coloração de basidiocarpos desidratados de Agaricus blazei segundo escala de Munsell Evaluation of the dehydrated fruiting bodies of the mushroom Agaricus blazei according to Munsell colour scale

    Directory of Open Access Journals (Sweden)

    Marisa Aparecida da Fonseca Delú

    2006-02-01

    Full Text Available Com este trabalho objetivou-se avaliar a coloração final de basidiocarpos desidratados de Agaricus blazei, após serem submetidos a tratamento com ácidos ascórbico e cítrico. Para tanto, utilizaram-se cogumelos A. blazei, cultivados em substrato apropriado e mantidos em estufa. Os cogumelos foram colhidos com o píleo totalmente fechado e após a limpeza em água corrente, os basidiocarpos foram seccionados ao meio no sentido longitudinal, sendo uma metade submetida ao tratamento experimental e a outra metade representando o tratamento controle. Os tratamentos experimentais consistiram da imersão das metades dos basidiocarpos em solução de ácido ascórbico comercial nas concentrações de 0, 10, 20 e 30 mg/L durante 0, 2, 5, 10, 15 ou 20 minutos. Para o ácido cítrico foram testadas as mesmas concentrações anteriores, porém nos tempos de imersão de 0, 10 e 15 minutos. Todos os tratamentos consistiram de 3 repetições cada. Não se observou relação entre os tratamentos utilizados com a coloração final dos basidiocarpos, embora a utilização de substâncias ácidas tenha possibilitado a obtenção de basidiocarpos desidratados mais próximos daquela coloração considerada ideal para comercialização.The main aim of this work was to evaluate the final colour of the fructification bodies of the mushroom Agaricus blazei submitted to ascorbic and citric acid treatment. The mushroom Agaricus blazei was cultivated in an appropriated substrate and storage in incubators. The mushroom was harvested containing closed pileus and after cleaning with running tap water, the fruiting bodies were sliced and half of each were submitted to acid treatment and half was the control (water immersion. The experimental treatment consisted of immersing half of each basiodiocarp in different concentrations of the commercial solution of ascorbic acid (0, 10, 20 and 30 mg/ml during 0, 2, 5, 10, 15 and 20 minutes. The other parts of fruiting bodies were

  1. Phylogenomic analysis of the genus Ralstonia based on 686 single-copy genes.

    Science.gov (United States)

    Zhang, Yucheng; Qiu, Sai

    2016-01-01

    The genus Ralstonia contains species that are devastating plant pathogens, opportunistic human pathogens, and/or important degraders of xenobiotic and recalcitrant compounds. However, significant nomenclature problems exist, especially for the Ralstonia solanacearum species complex which consists of four phylotypes. Phylogenomics of the Ralstonia genus was investigated via a comprehensive analysis of 39 Ralstonia genomes as well as four genomes of Cupriavidus necator (more commonly known by its previous name Ralstonia eutropha). These data revealed 686 single-copy orthologs that could be extracted from the Ralstonia core-genome and used to reconstruct the phylogeny of the genus Ralstonia. The generated tree has strong bootstrap support for almost all branches. We also estimated the in silico DNA-DNA hybridization (isDDH) and the average nucleotide identity (ANI) values between each genome. Our data confirmed that whole genome sequence data provides a powerful tool to resolve the complex taxonomic questions of the genus Ralstonia, e.g. strains of Ralstonia solanacearum phylotype IIA and IIB may represent two subspecies of R. solanacearum, and strains of R. solanacearum phylotype I and III may be classified into two subspecies of Ralstonia pseudosolanacearum. Recently, strains of R. solanacearum phylotype IV were proposed to be reclassified into different subspecies of Ralstonia syzygii; our study, however, showed that phylotype IV strains had high isDDH values (83.8-96.1 %), indicating it may be not appropriate to classify these closely related strains into different subspecies. We also evaluated the performance of six chromosomal housekeeping genes (gdhA, mutS, adk, leuS, rplB and gyrB) used in Ralstonia phylogenetic inference. The multilocus sequence analysis of these six marker genes was able to reliably infer the phylogenetic relationships of the genus Ralstonia.

  2. The Medicinal Mushroom Agaricus blazei Murrill: Review of Literature and Pharmaco-Toxicological Problems

    Directory of Open Access Journals (Sweden)

    F. Firenzuoli

    2008-01-01

    Full Text Available Agaricus blazei Murrill (ABM popularly known as ‘Cogumelo do Sol’ in Brazil, or ‘Himematsutake’ in Japan, is a mushroom native to Brazil, and widely cultivated in Japan for its medicinal uses, so it is now considered as one of the most important edible and culinary-medicinal biotechnological species. It was traditionally used to treat many common diseases like atherosclerosis, hepatitis, hyperlipidemia, diabetes, dermatitis and cancer. In vitro and in vivo ABM has shown immunomodulatory and antimutagenic properties, although the biological pathways and chemical substances involved in its pharmacological activities are still not clear. The polysaccharides phytocomplex is thought to be responsible for its immunostimulant and antitumor properties, probably through an opsonizing biochemical pathway. Clinical studies are positive confirmations, but we are still at the beginning, and there are perplexing concerns especially relative to the content of agaritine. Argantine is a well-known carcinogenic and toxic substance in animals, that must be completely and fully evaluated.

  3. Phase I Clinical Study of the Dietary Supplement, Agaricus blazei Murill, in Cancer Patients in Remission

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    Satoshi Ohno

    2011-01-01

    Full Text Available Although many cancer patients use complementary and alternative medicine, including Agaricus blazei Murill (ABM, safety is not yet well understood. Cancer survivors took 1.8, 3.6, or 5.4 g ABM granulated powder (Kyowa Wellness Co., Ltd., Tokyo, Japan per day orally for 6 months. Adverse events were defined by subjective/objective symptoms and laboratory data according to the National Cancer Institute Common Terminology Criteria for Adverse Events version 3.0 (NCI-CTCAE v3.0. Seventy-eight patients were assessed for safety of ABM (30/24/24 subjects at 1/2/3 packs per day, resp.. Adverse events were observed in 9 patients (12%. Most were digestive in nature such as nausea and diarrhea, and one patient developed a liver dysfunction-related food allergy, drug lymphocyte product. However, none of these adverse events occurred in a dose-dependent manner. This study shows that ABM does not cause problems in most patients within laboratory parameters at the dosages tested over 6 months. This trial supports previous evidence that the ABM product is generally safe, excluding possible allergic reaction.

  4. Contra rotative propeller performance estimation

    OpenAIRE

    Coca Casanueva, Vladimir

    2008-01-01

    Due to the continuous increase in the fuel price, the propeller engine solution (the most efficient in fuel saving terms) becomes very attractive to airlines and thus, to aircraft manufacturers. However, airlines aren’t ready to fly an aircraft at lower cruise Mach number than the traditional Mach 0,84, which jeopardizes the fuel efficiency of propellers. At this stage is where the contra-rotative concept appears, which let us to increase the cruise speed while reducing fuel consumption...

  5. Influência de Agaricus blazei Murrill sobre o tumor sólido de Ehrlich e linfonodos poplíteos de camundongos Influence of Agaricus blazei Murrill in solid Ehrlich tumor and popliteal lymph nodes in mice

    Directory of Open Access Journals (Sweden)

    D. Verçosa Junior

    2007-02-01

    Full Text Available Estudou-se a influência do tratamento diário com filtrado aquoso de Agaricus blazei Murrill (ABM (25mg/ml, via oral, por 17 e 57 dias, em camundongos inoculados com tumor sólido de Ehrlich (TSE por meio da curva de crescimento tumoral, do peso relativo do tumor, da contagem de regiões organizadoras de nucléolos (AgNORs e dos padrões histológicos das massas tumorais e linfonodos poplíteos. Os animais que ingeriram o extrato aquoso do ABM por 57 dias apresentaram menor (P0,05 entre os animais tratados e não tratados.The influence of daily administration of Agaricus blazei Murrill (ABM aqueous solution (25mg/ml during 17 and 57 days in mice bearing solid Ehrlich tumor was studied. Tumoral growth, tumoral and spleenic relative weights, nucleoly organization regions AgNORs values and tumor and popliteal lymph nodes histopathology were daily evaluated. The animals that received ABM during 57 days showed lower values (P0.05 between treated and non-treated animals. No difference in microscopic evaluation of the tumors in treated and non-treated animals was seen and metastasis in popliteal nodes of the tumor occurred in all the animals.

  6. Extratos de Lentinula edodes e Agaricus blazei sobre Bipolaris sorokiniana e Puccinia recondita f. sp. tritici, in vitro Extracts of Lentinula edodes and Agaricus blazei on Bipolaris sorokiniana and Puccinia recondita f. sp. tritici., in vitro

    Directory of Open Access Journals (Sweden)

    Ana Cristina Grade Fiori-Tutida

    2007-09-01

    Full Text Available Com o objetivo de buscar medidas alternativas para o controle de Bipolaris sorokiniana e Puccinia recondita f. sp. tritici testou-se o efeito fungitóxico in vitro dos cogumelos Lentinula edodes e Agaricus blazei sobre esses fungos. Os extratos brutos aquosos de ambos os cogumelos não tiveram efeito significativo tanto no crescimento micelial quanto na germinação de esporos de B. sorokiniana. Por outro lado, os extratos dos cogumelos inibiram a germinação de esporos de P. recondita f. sp. tritici, com destaque para o isolado LE 96/17 de L. edodes que apresentou inibição da ordem de 52,4%.With the purpose of finding alternative ways to control Bipolaris sorokiniana and Puccinia recondita f. sp. triciti, the fungitoxic effect in vitro of Lentinula edodes and Agaricus blazei mushrooms was tested on these fungi. The aqueous crude extract of both mushrooms did not have significant effect on mycelial growth and spore germination of B. sorokiniana . On the other hand, the mushroom extracts inhibited the germination of P. recondita f. sp. tritici uredospores, particularly on the L. edodes (96/17, which exhibited the largest inhibition of spore germination (52,38%.

  7. The Mushroom Agaricus blazei Murill Elicits Medicinal Effects on Tumor, Infection, Allergy, and Inflammation through Its Modulation of Innate Immunity and Amelioration of Th1/Th2 Imbalance and Inflammation

    OpenAIRE

    Geir Hetland; Egil Johnson; Torstein Lyberg; Gunnar Kvalheim

    2011-01-01

    The medicinal mushroom Agaricus blazei Murill from the Brazilian rain forest has been used in traditional medicine and as health food for the prevention of a range of diseases, including infection, allergy, and cancer. Other scientists and we have examined whether there is scientific evidence behind such postulations. Agaricus blazei M is rich in the immunomodulating polysaccharides, β -glucans, and has been shown to have antitumor, anti-infection, and antiallergic/-asthmatic properties in mo...

  8. Violencia intrafamiliar contra las mujeres

    OpenAIRE

    Omar Huertas Díaz

    2012-01-01

    El presente texto pretende abordar el tema de violencia en contra de las mujeres desde la perspectiva familiar, es decir la violencia intrafamiliar o también llamada doméstica, entendida y afirmada desde la Corte Constitucional, como aquella violencia que causa daño o maltrato físico, psíquico o sexual, trato cruel, intimidatorio o degradante, amenaza, agravio, ofensa o cualquier otra forma de agresión, producida entre miembros de una familia, llámese cónyuge o compañero permanente, padre o m...

  9. Native Valve Endocarditis due to Ralstonia pickettii: A Case Report and Literature Review.

    Science.gov (United States)

    Orme, Joseph; Rivera-Bonilla, Tomas; Loli, Akil; Blattman, Negin N

    2015-01-01

    Ralstonia pickettii is a rare pathogen and even more rare in healthy individuals. Here we report a case of R. pickettii bacteremia leading to aortic valve abscess and complete heart block. To our knowledge this is the first case report of Ralstonia species causing infective endocarditis with perivalvular abscess.

  10. Native Valve Endocarditis due to Ralstonia pickettii: A Case Report and Literature Review

    Directory of Open Access Journals (Sweden)

    Joseph Orme

    2015-01-01

    Full Text Available Ralstonia pickettii is a rare pathogen and even more rare in healthy individuals. Here we report a case of R. pickettii bacteremia leading to aortic valve abscess and complete heart block. To our knowledge this is the first case report of Ralstonia species causing infective endocarditis with perivalvular abscess.

  11. Antimutagenic action of Lentinula edodes and Agaricus blazei on Aspergillus nidulans conidia Ação antimutagênica de Lentinula edodes e Agaricus blazei em conídios de Aspergillus nidulans

    Directory of Open Access Journals (Sweden)

    Edneia A. Souza-Paccola

    2004-12-01

    Full Text Available The antimutagenic effect of the mushrooms Lentinula edodes and Agaricus blazei was studied on conidia of Aspergillus nidulans when exposed to short wave ultraviolet light. Two strains of A. nidulans were used. For the preparation of the extracts, the fresh mushrooms were left in aqueous infusion for 12 hours and heated in a water bath for 15 min at 100ºC, and then the material was filtered. The dehydrated mushrooms were left in aqueous infusion for 12 hours and to filtrated. Both filtrates were used as extracts. A. nidulans conidia were incubated for three hours in water and in mushroom extracts and only after were exposed to UV light (pre-treatment. A. nidulans conidia were suspended in water and in mushroom extracts and immediately submitted to UV light (post-treatment. Conidial suspension in water and in mushroom extracts but without exposure to the mutagenic agent were used as controls. After mutagenic treatment, it was observed an increase in the survival rate of the A. nidulans and a decrease in the percentage of morphologic mutants on conidia treated with mushroom extracts. Our results demonstrated the radioprotective and antimutagenic effect of L. edodes and A. blazei mushrooms on eukaryotic cells when exposed to UV radiation.O efeito antimutagênico dos cogumelos Lentinula edodes e Agaricus blazei foram estudados sobre conídios de Aspergillus nidulans quando expostos à luz ultravioleta de comprimento de onda curto. Duas linhagens de A. nidulans foram usadas. Para o preparo dos extratos, os cogumelos frescos permaneceram em infusão aquosa por 12 horas e em seguida foram aquecidos em banho-maria por 15 min à 100ºC e a seguir o material foi filtrado. Os cogumelos desidratados foram deixados em infusão aquosa por 12 horas e a seguir filtrados. Ambos os filtrados foram usados como extratos. Os conídios de A. nidulans foram incubados por três horas em água e em extrato de cogumelo e somente após foram expostos a luz ultravioleta

  12. Violencia contra inmigrantes en Tamaulipas

    Directory of Open Access Journals (Sweden)

    Simón Pedro Izcara-Palacios

    2012-10-01

    Full Text Available Abstract: Violence against immigrants in TamaulipasMigrants in Mexico are subjected to extortions, kidnappings, rapes and killings. Tamaulipas, a state situated in the northeast of Mexico, has registered an unprecedented level of violence against migrants. In August of 2010, 72 migrants were massacred in San Fernando (Tamaulipas and in April of 2011, 194 corpses of migrants were found in the same place. Furthermore, since 2009, rural communities in central Tamaulipas, which receive more than five thousand migrants a year to work in harvesting oranges, have suffered violent attacks targeting immigrants. This paper, based on a qualitative methodology that includes in-depth interviews with 60 immigrants conducted between April 2011 and November 2011, examines the forms of cultural, direct, structural and post-structural violence suffered by immigrant workers employed in the orange sector of Tamaulipas.Resumen:Los migrantes en México son objeto de extorsiones, secuestros, violaciones y asesinatos. Tamaulipas, un estado situado en el noreste de México, ha registrado niveles sin precedentes de violencia contra los migrantes. En Agosto de 2010 72 migrantes fueron masacrados en San Fernando (Tamaulipas, y en Abril de 2011 194 cadáveres de migrantes fueron encontrados en el mismo lugar. Asimismo, las comunidades rurales del centro de Tamaulipas, que reciben anualmente más de 5 mil migrantes para trabajar en la pizca de la naranja, han sufrido desde el año 2009 violentos ataques dirigidos contra los migrantes. Este artículo, basado en una metodología cualitativa que incluye entrevistas en profundidad con 60 migrantes realizadas entre Abril y Noviembre de 2011, examina las formas de violencia cultural, directa, estructural y postestructural sufrida por los trabajadores migratorios empleados en el sector citrícola de Tamaulipas.

  13. Common desease and insect in Agaricus blazei and their control%巴西蘑菇常见病虫害及防治

    Institute of Scientific and Technical Information of China (English)

    林衍铨; 黄建成; 胡润芳

    2000-01-01

    @@ 巴西蘑菇(Agaricus blazei Murrill,日本商品名称姬松茸)在栽培过程中,往往会出现各种病、虫害,轻者降低品质,造成减产,重者甚至绝收.现将巴西蘑菇常见的病虫害及其防治措施介绍如下.

  14. Vacuna contra el VPH (HPV Vaccine)

    Centers for Disease Control (CDC) Podcasts

    2013-07-25

    Desde el 2006, hay una vacuna que protege contra los tipos de VPH que causan cáncer con mayor frecuencia. Este podcast habla sobre la importancia de que los padres hablen con los proveedores de atención médica de sus hijos sobre ponerles la vacuna contra el VPH.  Created: 7/25/2013 by MMWR.   Date Released: 11/4/2013.

  15. CIA and the Contras' cocaine connection

    OpenAIRE

    Kain, Victor

    2006-01-01

    The evidence shows that the government knew that the Contras’ decided to traffic cocaine to finance themselves. The government participated in the drug trafficking by not interrupting it. CIA ordered the Contras to traffic drugs. Traffickers were protected from prosecution and received government contract. The government knew and sanctioned the drug trafficking into the US to support the Contras. The White House urged lenience for at least one convicted trafficker and terrorist.

  16. Violencia intrafamiliar contra las mujeres

    Directory of Open Access Journals (Sweden)

    Omar Huertas Díaz

    2012-07-01

    Full Text Available El presente texto pretende abordar el tema de violencia en contra de las mujeres desde la perspectiva familiar, es decir la violencia intrafamiliar o también llamada doméstica, entendida y afirmada desde la Corte Constitucional, como aquella violencia que causa daño o maltrato físico, psíquico o sexual, trato cruel, intimidatorio o degradante, amenaza, agravio, ofensa o cualquier otra forma de agresión, producida entre miembros de una familia, llámese cónyuge o compañero permanente, padre o madre, aunque no convivan bajo el mismo techo, ascendientes o descendientes de estos incluyendo hijos adoptivos, y en general todas las personas que de manera permanente se hallaren integrados a la unidad doméstica. Junto a ello el documento explicará de qué forma afecta esta particular clase de violencia a las mujeres, los abusos y malos tratos que la materializan, y las medidas adoptadas por el Estado Colombiano para enfrentar sus consecuencias, y por último la presentación de los conceptos que maneja la Corte Constitucional en la interpretación de dicho fenómeno.

  17. Against inequality Contra la desigualdad

    Directory of Open Access Journals (Sweden)

    Dugger William

    1998-12-01

    es impracticable porque el Estado siempre actua, aún cuando siga políticas económicas no intervencionistas. En contra del simplismo de quienes defienden la disyunción 'Estado o mercado'. En cuanto a la desigualdad, resume así el problema central de nuestra época: ¿Cuánta desigualdad creará y permitirá el Estado para preservar la estructura de mercado?

  18. 巴西蘑菇Agaricus blazei Murill水溶性多糖部分理化性质的研究%Some Properties of Water - soluble Polysaccharides from Agaricus blazei Murill Fruit Body

    Institute of Scientific and Technical Information of China (English)

    林跃鑫; 叶竹秋; 黄谚谚; 谢华玲

    2002-01-01

    本文以物理及化学方法研究了巴西蘑菇Agaricus blazei Murill水溶性多糖AB-Ⅰ、AB-Ⅱ-b和AB-Ⅲ-b的理化性质,结果表明,3种经纯化的多糖都不含糖醛酸而含蛋白质,蛋白质含量分别为AB-Ⅰ:20.1%、AB-Ⅱ-b:16.3%、AB-Ⅲ-b:25.6%.它们的比旋度分别为AB-Ⅰ:+44.33°、AB-Ⅱ-b;+3.70°、AB-Ⅲ-b:+5.04°.AB-Ⅰ、AB-Ⅱ-b的1.0%水溶液均具有良好的增稠性,其粘度具有很好的抗盐浓度、耐热和对广泛pH的稳定性能.

  19. Contra pürib sajandi rahvakirjanikuks / Aivar Kull

    Index Scriptorium Estoniae

    Kull, Aivar, 1955-

    2001-01-01

    Contra [Konnula, Margus]. Suusamütsi tutt : luulet aastatest 1974-2000. Urvaste ; Tartu : Mina Ise, 2001. Vaata ka: Kull, Aivar. Kulli pilk. - Tartu : Ilmamaa, 2005, lk. 184-185, pealkirjaga "Contra - uue sajandi rahvakirjanik?"

  20. Aqueous Extract of Agaricus blazei Murrill Prevents Age-Related Changes in the Myenteric Plexus of the Jejunum in Rats

    Directory of Open Access Journals (Sweden)

    Ana Paula de Santi-Rampazzo

    2015-01-01

    Full Text Available This study evaluated the effects of the supplementation with aqueous extract of Agaricus blazei Murrill (ABM on biometric and blood parameters and quantitative morphology of the myenteric plexus and jejunal wall in aging Wistar rats. The animals were euthanized at 7 (C7, 12 (C12 and CA12, and 23 months of age (C23 and CA23. The CA12 and CA23 groups received a daily dose of ABM extract (26 mg/animal via gavage, beginning at 7 months of age. A reduction in food intake was observed with aging, with increases in the Lee index, retroperitoneal fat, intestinal length, and levels of total cholesterol and total proteins. Aging led to a reduction of the total wall thickness, mucosa tunic, villus height, crypt depth, and number of goblet cells. In the myenteric plexus, aging quantitatively decreased the population of HuC/D+ neuronal and S100+ glial cells, with maintenance of the nNOS+ nitrergic subpopulation and increase in the cell body area of these populations. Supplementation with the ABM extract preserved the myenteric plexus in old animals, in which no differences were detected in the density and cell body profile of neurons and glial cells in the CA12 and CA23 groups, compared with C7 group. The supplementation with the aqueous extract of ABM efficiently maintained myenteric plexus homeostasis, which positively influenced the physiology and prevented the death of the neurons and glial cells.

  1. 姬松茸液体培养基的筛选%The Selection on Culture Medium of Agaricus blazei Murrill

    Institute of Scientific and Technical Information of China (English)

    周选围

    2001-01-01

    Agaricus blazei Murrill is one of the edible and m edicinal fungi.In this paper,through the selection and study of the improted Agaricus blazei Murrill in submerged culture medium,the experimental r esults show that the most suitable composition of the Agaricus blazei Murrill submerged culture medium is as follow:3.0% corn powder,0.3% yeast conc e ntration,2.0% sugar,0.05%(NH4)2SO4,0.1%MgSO4,0.1%KH2PO4.In thi s liquid medium,the mycelium grows vigorous,it gets to 539mg/100mL(DW)for 8 d ays.%对引进的姬松茸菌种进行了液体培养基的筛选研究,认为姬松茸液体培养最适合的培养基配方为:玉米粉3.0%,酵母提取物0.3%,蔗糖2.0%,硫酸铵0 .05%,硫酸镁0.1%,磷酸二氢钾0.1%。在这种培养基中,姬松茸生长旺盛,产生的菌丝球数量多,颜色白,大小均一,8d后生物量达53.9%mg/L(DW)。

  2. 姬松茸颗粒剂扶正作用的实验研究%Researching on Experimentation in strengthening body resistance of Agaricus blazei Muriu

    Institute of Scientific and Technical Information of China (English)

    王伟明; 张云凌

    2004-01-01

    姬松茸(Agaricus blazei Muriu)又称巴西菇,是一种食、药两用真菌,姬松茸富含多种丰富的营养成分。姬松茸颗粒剂系采用新工艺从姬松茸中提取的主要成分为粗多糖的一种制剂,我们对其抗肿瘤和对免疫功能的影响等方面进行了实验研究,现报道如下。

  3. 工厂化栽培姬松茸的关键技术%Factory Cultivation Key Techniques of Agaricus blazei

    Institute of Scientific and Technical Information of China (English)

    曾先富; 熊维全; 李昕竺; 刘洪

    2015-01-01

    姬松茸(Agaricus blazei)是一种珍稀食(药)用菌.对姬松茸工厂化栽培技术中菌种选择与制作、培养料配方与发酵、铺料与播种、菌丝体培养、覆土、出菇管理、采收与转潮管理、病虫害绿色防控等关键技术点进行了介绍.

  4. Vacunas contra los virus del papiloma humano

    Science.gov (United States)

    Una hoja informativa acerca de las vacunas contra los virus del papiloma humano (VPH) para prevenir infecciones con ciertos tipos de VPH, los cuales son la causa principal del cáncer de cuello del útero o cérvix.

  5. Ave sol contra excrementum : Kiri / Harri Tibar

    Index Scriptorium Estoniae

    Tibar, Harri

    1996-01-01

    Peeter Sauteri novell 'Kõhuvalu'. Vastukaja : Bogovski, Paul. Surun kätt, dotsent hr. Tibar! // Sõnumileht. - 1996. - 24. apr. - Lk.14; Väljataga, Märt. Viisipärasus contra inimlähedus // Sõnumileht. - 1996. - 26. apr. - Lk.14

  6. Contra-rotating propeller; Niju hanten propeller

    Energy Technology Data Exchange (ETDEWEB)

    Sakamoto, Y. [Ishikawajima-Harima Heavy Industries Co. Ltd., Tokyo (Japan)] Kushiyama, H. [Mitsubishi Heavy Industries Ltd., Tokyo (Japan)] Nitta, K. [Sumitomo Heavy Industries Ltd., Tokyo (Japan)

    1998-09-01

    Contra-rotating propeller (CR) is a save energy device where two propellers are set on one shaft and they are contra-rotated, later propeller recovers the unused energy caused by the rotation of first propeller and changes into effective propeller force. Development of optimum design method of CRP, compact helical gear device, contra-rotating shaft, contra-rotating seal and so forth are the technical topics for making practical use of CRP device for large cargo vessels. At present, there are four vessels on sail that use CRP and they are 37,000t cargo vessel and 258,000t oil tanker using CRP device of Ishikawajima-Harima Heavy Industries Co., Ltd., and vessel for carrying vehicles and 258,000t tanker using the CRP device of Mitsubishi Heavy Industries, Ltd. Main purpose of using CRP device in large cargo vessels is to save energy and reduction of maximum horse power of 15% was possible as compared with the one propeller vessel when compared with the same vessel speed. In this report, structure and characteristics of the CRP device for each company are explained and the practical findings of vessels on work are introduced. 10 figs.

  7. Studies on Odontotermes formosanus Food Choice between Agaricus blazei and Its Substrate%黑翅土白蚁对姬松茸及其培养料的取食性研究

    Institute of Scientific and Technical Information of China (English)

    苏德伟; 林辉; 罗海凌; 林春梅; 林占熺

    2012-01-01

    In order to evaluate the impact of Odontotermes formosanus to Agaricus blazei Murrill cultivation, studies were carried out on food selectiveness of Odontotermes formosanus by observing 5 different materials ( fruitbody of Agaricus blazei Murrill, bamboo powder, Juncao, Juncao substrate of Agaricus blazei Murrill, bamboo substrate of Agaricus blazei Murrill) foraging behaviors. The results showed that consumption rate of Juncao and bamboo powders were very significantly higher than that of other 3 materials. And the consumption rate of Agaricus blazei Murrill was 0. The mud sheet area and mud sheet coverage rate of Juncao and bamboo powders were very significantly higher than that of the other 3 materials. These all indicated that the volatile substances distributed from mycelium and fruitbody of Agaricus blazei Murrill could inhibit termites' feeding. And the harms of termites in Agaricus blazei Murrill were mainly from cultivation materials.%通过观察黑翅土白蚁工蚁的觅食行为,进行了黑翅土白蚁对5种材料(姬松茸、木屑、菌草草粉、菌草姬松茸培养料、木屑姬松茸培养料)的取食选择性研究.结果表明,木屑和菌草草粉的被食率极显著高于其他3种材料,而姬松茸被食率为0;木屑与菌草草粉的泥被面积和泥被覆盖率极显著高于其他3种材料.这都表明姬松茸菌丝及其子实体散发出来的挥发性物质可以抑制黑翅土白蚁取食,黑翅土白蚁为害姬松茸主要是对其栽培料的破坏.

  8. Molecular Diversity of Ralstonia solanacearum Isolated from Ginger in Hawaii.

    Science.gov (United States)

    Yu, Q; Alvarez, A M; Moore, P H; Zee, F; Kim, M S; de Silva, A; Hepperly, P R; Ming, R

    2003-09-01

    ABSTRACT The genetic diversity of Ralstonia solanacearum strains isolated from ginger (Zingiber officinale) growing on the island of Hawaii was determined by analysis of amplified fragment length polymorphisms (AFLPs). Initially 28 strains of R. solanacearum collected from five host plant species worldwide were analyzed by AFLP. A second analysis was conducted on 55 R. solanacearum strains collected from three ginger farms along the Hamakua Coast of Hawaii, the principle area of ginger cultivation in the state. From the initial analysis, R. solanacearum strains from ginger in Hawaii showed a high degree of similarity at 0.853. In contrast, the average genetic similarity between R. solanacearum strains from heliconia and ginger was only 0.165, and strains from ginger showed little similarity with strains from all other hosts. The second analysis of 55 strains from ginger on different Hawaiian farms confirmed that they were distinct from race 1 strains from tomato. Strains from ginger also showed greater diversity among themselves in the second analysis, and the greatest diversity occurred among strains from a farm where ginger is frequently imported and maintained. Our results provide evidence that R. solanacearum strains from ginger in Hawaii are genetically distinct from local strains from tomato (race 1) and heliconia (race 2).

  9. Molecular Diversity of Ralstonia solanacearum Isolated from Ginger in Hawaii.

    Science.gov (United States)

    Yu, Q; Alvarez, A M; Moore, P H; Zee, F; Kim, M S; de Silva, A; Hepperly, P R; Ming, R

    2003-09-01

    ABSTRACT The genetic diversity of Ralstonia solanacearum strains isolated from ginger (Zingiber officinale) growing on the island of Hawaii was determined by analysis of amplified fragment length polymorphisms (AFLPs). Initially 28 strains of R. solanacearum collected from five host plant species worldwide were analyzed by AFLP. A second analysis was conducted on 55 R. solanacearum strains collected from three ginger farms along the Hamakua Coast of Hawaii, the principle area of ginger cultivation in the state. From the initial analysis, R. solanacearum strains from ginger in Hawaii showed a high degree of similarity at 0.853. In contrast, the average genetic similarity between R. solanacearum strains from heliconia and ginger was only 0.165, and strains from ginger showed little similarity with strains from all other hosts. The second analysis of 55 strains from ginger on different Hawaiian farms confirmed that they were distinct from race 1 strains from tomato. Strains from ginger also showed greater diversity among themselves in the second analysis, and the greatest diversity occurred among strains from a farm where ginger is frequently imported and maintained. Our results provide evidence that R. solanacearum strains from ginger in Hawaii are genetically distinct from local strains from tomato (race 1) and heliconia (race 2). PMID:18944096

  10. Primary mechanism of apoptosis induction in a leukemia cell line by fraction FA-2-b-ß prepared from the mushroom Agaricus blazei Murill

    Directory of Open Access Journals (Sweden)

    L. Gao

    2007-11-01

    Full Text Available Agaricus blazei Murill is a native Brazilian mushroom which functions primarily as an anticancer substance in transplanted mouse tumors. However, the mechanism underlying this function of A. blazei Murill remains obscure. The present study was carried out to investigate the effect of fraction FA-2-b-ß, an RNA-protein complex isolated from A. blazei Murill, on human leukemia HL-60 cells in vitro. Typical apoptotic characteristics were determined by morphological methods using DNA agarose gel electrophoresis and flow cytometry. The growth suppressive effect of fraction FA-2-b-ß on HL-60 cells in vitro occurred in a dose- (5-80 µg/mL and time-dependent (24-96 h manner. The proliferation of HL-60 cells (1 x 10(5 cells/mL treated with 40 µg/mL of fraction FA-2-b-ß for 24-96 h and with 5-80 µg/mL for 96 h resulted in inhibitory rates ranging from 8 to 54.5%, and from 4.9 to 86.3%, respectively. Both telomerase activity determined by TRAP-ELISA and mRNA expression of the caspase-3 gene detected by RT-PCR were increased in HL-60 cells during fraction FA-2-b-ß treatment. The rate of apoptosis correlated negatively with the decrease of telomerase activity (r = 0.926, P < 0.05, but correlated positively with caspase-3 mRNA expression (r = 0.926, P < 0.05. These data show that fraction FA-2-b-ß can induce HL-60 cell apoptosis and that the combined effect of down-regulation of telomerase activity and up-regulation of mRNA expression of the caspase-3 gene could be the primary mechanism of induction of apoptosis. These findings provide strong evidence that fraction FA-2-b-ß could be of interest for the clinical treatment of acute leukemia.

  11. Genotypic and phenotypic diversity of Ralstonia pickettii and Ralstonia insidiosa isolates from clinical and environmental sources including High-purity Water.

    LENUS (Irish Health Repository)

    Ryan, Michael P

    2011-08-30

    Abstract Background Ralstonia pickettii is a nosocomial infectious agent and a significant industrial contaminant. It has been found in many different environments including clinical situations, soil and industrial High Purity Water. This study compares the phenotypic and genotypic diversity of a selection of strains of Ralstonia collected from a variety of sources. Results Ralstonia isolates (fifty-nine) from clinical, industrial and environmental origins were compared genotypically using i) Species-specific-PCR, ii) PCR and sequencing of the 16S-23S rRNA Interspatial region (ISR) iii) the fliC gene genes, iv) RAPD and BOX-PCR and v) phenotypically using biochemical testing. The species specific-PCR identified fifteen out of fifty-nine designated R. pickettii isolates as actually being the closely related species R. insidiosa. PCR-ribotyping of the 16S-23S rRNA ISR indicated few major differences between the isolates. Analysis of all isolates demonstrated different banding patterns for both the RAPD and BOX primers however these were found not to vary significantly. Conclusions R. pickettii species isolated from wide geographic and environmental sources appear to be reasonably homogenous based on genotypic and phenotypic characteristics. R. insidiosa can at present only be distinguished from R. pickettii using species specific PCR. R. pickettii and R. insidiosa isolates do not differ significantly phenotypically or genotypically based on environmental or geographical origin.

  12. Amplification of RNA by NASBA allows direct detection of viable cells of Ralstonia solanacearum in potato

    NARCIS (Netherlands)

    Bentsink, L.; Leone, G.O.M.; Beckhoven, van J.R.C.M.; Schijndel, van H.B.; Gemen, van B.; Wolf, van der J.M.

    2002-01-01

    Aims: The objective of this study was to develop a Nucleic Acid Sequence Based Amplification (NASBA) assay, targeting 16S rRNA sequences, for direct detection of viable cells of Ralstonia solanacearum, the causal organism of bacterial wilt. The presence of intact 16S rRNA is considered to be a usefu

  13. A multiplex PCR assay to detect and differentiate select agent strains of Ralstonia solanacearum

    Science.gov (United States)

    Ralstonia solanacearum causes bacterial wilt in a variety of cash crops. R. solanacearum race 3 biovar 2 strains are considered select agents by the U.S. Government because they are not endemic to the U.S. and have the potential to cause brown rot disease in our potato production fields. Simple and...

  14. Emergence of VIM-2 metallo-beta-lactamase producing Ralstonia pickettii clinical isolate in India

    Directory of Open Access Journals (Sweden)

    A Khajuria

    2014-01-01

    Full Text Available A multidrug-resistant clinical isolate of Ralstonia pickettii from a woman was analysed. Modified Hodge test was positive for carbapenemase production. Conjugation experiment revealed the presence of conjugative plasmid of >140 Kb size typed as IncN type. This is the first report of emergence blaVIM-2 in R. pickettii in India.

  15. Stenotrophomonas maltophilia: a new potential biocontrol agent of Ralstonia solanacearum, causal agent of potato brown rot

    NARCIS (Netherlands)

    Messiha, N.A.S.; Diepeningen, van A.D.; Farag, N.S.; Abdallah, S.A.; Janse, J.D.; Bruggen, van A.H.C.

    2007-01-01

    Stenotrophomonas maltophilia was isolated from the rhizosphere of eggplant in the Nile Delta of Egypt, and its antagonistic potential against Ralstonia solanacearum race 3 biovar 2, the causal agent of potato brown rot, was in vitro evaluated on KB agar medium and in vivo on potato plants. In vitro,

  16. A putative genomic island, PGI-1, in Ralstonia solanacearum biovar 2 revealed by subtractive hybridization

    NARCIS (Netherlands)

    Stevens, P.; van Elsas, J.D.

    2010-01-01

    Ralstonia solanacearum biovar 2, a key bacterial pathogen of potato, has recently established in temperate climate waters. On the basis of isolates obtained from diseased (potato) plants, its genome has been assumed to be virtually clonal, but information on environmental isolates has been lacking.

  17. The Mushroom Agaricus blazei Murill Elicits Medicinal Effects on Tumor, Infection, Allergy, and Inflammation through Its Modulation of Innate Immunity and Amelioration of Th1/Th2 Imbalance and Inflammation

    Directory of Open Access Journals (Sweden)

    Geir Hetland

    2011-01-01

    Full Text Available The medicinal mushroom Agaricus blazei Murill from the Brazilian rain forest has been used in traditional medicine and as health food for the prevention of a range of diseases, including infection, allergy, and cancer. Other scientists and we have examined whether there is scientific evidence behind such postulations. Agaricus blazei M is rich in the immunomodulating polysaccharides, β-glucans, and has been shown to have antitumor, anti-infection, and antiallergic/-asthmatic properties in mouse models, in addition to anti-inflammatory effects in inflammatory bowel disease patients. These effects are mediated through the mushroom's stimulation of innate immune cells, such as monocytes, NK cells, and dendritic cells, and the amelioration of a skewed Th1/Th2 balance and inflammation.

  18. 姬松茸母种培养基筛选研究初报%A Preliminary Study on the Selection of Mother Culture Media of Agaricus blazei Mürrill

    Institute of Scientific and Technical Information of China (English)

    陈文强; 周选围; 邓百万

    2002-01-01

    对姬松茸(Agaricus blazei Mtirrill)进行了母种培养基筛选试验.结果表明,姬松茸母种的最适培养基为:蔗糖25g,玉米淀粉30g,磷酸二氢钾3g,硫酸铵3g,维生素B1 10mg,琼脂20g.

  19. Research on the technology of composting sugarcane leaf in a fermentation tunnel for Agaricus blazei murill. cultivation%姬松茸蔗叶培养料隧道式发酵技术研究

    Institute of Scientific and Technical Information of China (English)

    谢毅栋; 覃喜强; 黄华

    2015-01-01

    通过对比糖料蔗叶和稻草为主原料,以隧道发酵和常规堆沤两种发酵方式制备栽培姬松茸的培养料研究,形成培养料制备过程中温度变化曲线。结果表明,以蔗叶为主原料栽培姬松茸完全可行,隧道发酵比常规堆沤时间大幅缩短,培养料质量稳定,能大幅提高姬松茸产量。%Through studying the research results for two different methods (fermentation tunnel and regular fermentation) of cultivating composting sugarcane leaf and straw for Agaricus blazei murill. plantation, as well as the temperature change records during the production of the compost, the experiment proves that it is doable to utilize sugarcane based compost to cultivate Agaricus blazei murill. Fermentation in a tunnel is dramatically faster than the regular fermentation method. The quality of the compost is stable and can increase the production of the Agaricus blazei murill.

  20. Seguridad contra incendios en edificios con atrio

    Directory of Open Access Journals (Sweden)

    Faller, George

    2003-06-01

    Full Text Available Atria are commonly used in the design of buildings to improve the environment of the space. Nevertheless the current Spanish codes do not address the fire safety concerns associated with this type of building. A new draft code, the "Código Técnico de la Edificación .. (CTE, proposes a series of measures to address the issue of fire safety in atria, based on the approach adopted by the British atrium codeo. In order to simplify the application of the measures, buildings are classified according to use and appropriate measures are presented in a tabulated format. As could be expected from such an approach, the simplification of the pro cess imposes limits on design flexibility, and given a set of prescribed solutions, the designer would often not be able to achieve the ideal building form. This article discusses the limits of a prescriptive approach to fire safety in buildings with atria , and describes an alternative approach based on fire engineering principles that offers the architect more design flexibilty .Cada vez se utilizan más atrios para mejorar el ambiente dentro de los edificios. Sin embargo, las normativas actualmente vigentes en España no ofrecen soluciones para abordar los riesgos -en caso de incendio- en este tipo de edificios. El borrador del nuevo Código Técnico de la Edificación (CTE plantea una serie de medidas de seguridad contra incendios en atrios, basada en el planteamiento seguido en por las normas británicas. Para simplificar la aplicación de dichas medidas, se fijan algunas características del edificio y se ofrecen soluciones basadas en medidas obtenidas de una tabla . Como es era de esperar con este tipo de planteamiento, la facilidad de aplicación va en detrimento de la flexibilidad, y resulta que con las soluciones prescritas el diseñador no puede conseguir la forma deseada en el edificio. Este artículo trata de ilustrar las restricciones que conllevan un planteamiento prescriptivo para la seguridad

  1. Antibacterial Activity of the Flavonoids from Dalbergia odorifera on Ralstonia solanacearum

    OpenAIRE

    Wenjian Zuo; Hongjin Bai; Mingfu Gong; Xiabo Zhao; Wenli Mei; Haofu Dai

    2011-01-01

    Phytohemical investigation on the heartwood of Dalbergia odorifera resulted in the isolation of nine flavonoids. Their structures were elucidated as sativanone (1), (3R)-vestitone (2), (3R)-2',3',7-trihydroxy-4'-methoxyisoflavanone (3), (3R)-4'-methoxy-2',3,7-trihydroxyisoflavanone (4), carthamidin (5), liquiritigenin (6), isoliquiritigenin (7), (3R)-vestitol (8), and sulfuretin (9) based on their spectral data. All compounds were evaluated for their inhibitory activity against Ralstonia sola...

  2. Nitrate Assimilation Contributes to Ralstonia solanacearum Root Attachment, Stem Colonization, and Virulence

    OpenAIRE

    Dalsing, Beth L.; Allen, Caitilyn

    2014-01-01

    Ralstonia solanacearum, an economically important plant pathogen, must attach, grow, and produce virulence factors to colonize plant xylem vessels and cause disease. Little is known about the bacterial metabolism that drives these processes. Nitrate is present in both tomato xylem fluid and agricultural soils, and the bacterium's gene expression profile suggests that it assimilates nitrate during pathogenesis. A nasA mutant, which lacks the gene encoding the catalytic subunit of R. solanacear...

  3. Draft Genome Sequences of Ralstonia solanacearum Race 3 Biovar 2 Strains with Different Temperature Adaptations.

    Science.gov (United States)

    Yuan, Kat Xiaoli; Cullis, Jeff; Lévesque, C André; Tambong, James; Chen, Wen; Lewis, Christopher T; De Boer, Solke H; Li, Xiang Sean

    2015-01-01

    Ralstonia solanacearum race 3 biovar 2 (R3bv2) causes brown rot of potato in countries with temperate climates. Here, we report two draft genome sequences of R. solanacearum R3bv2 NCPPB909 and CFIA906 with different temperature adaptations. Analysis of these genome sequences will provide detailed insight on virulence, functionality, and plant/pest interactions of this widely distributed and regulated pathogen. PMID:26272559

  4. Recent Trends in Control Methods for Bacterial Wilt Diseases Caused by Ralstonia solanacearum

    OpenAIRE

    Yuliar,; Nion, Yanetri Asi; Toyota, Koki

    2015-01-01

    Previous studies have described the development of control methods against bacterial wilt diseases caused by Ralstonia solanacearum. This review focused on recent advances in control measures, such as biological, physical, chemical, cultural, and integral measures, as well as biocontrol efficacy and suppression mechanisms. Biological control agents (BCAs) have been dominated by bacteria (90%) and fungi (10%). Avirulent strains of R. solanacearum, Pseudomonas spp., Bacillus spp., and Streptomy...

  5. Optimization of growth media components for polyhydroxyalkanoate (PHA) production from organic acids by Ralstonia eutropha

    OpenAIRE

    Yang, Yung-Hun; Brigham, Christopher J.; Budde, Charles F.; Boccazzi, Paolo; Willis, Laura B.; Hassan, Mohd Ali; Yusof, Zainal Abidin Mohd; Rha, ChoKyun; Sinskey, Anthony J.

    2010-01-01

    We employed systematic mixture analysis to determine optimal levels of acetate, propionate, and butyrate for cell growth and polyhydroxyalkanoate (PHA) production by Ralstonia eutropha H16. Butyrate was the preferred acid for robust cell growth and high PHA production. The 3-hydroxyvalerate content in the resulting PHA depended on the proportion of propionate initially present in the growth medium. The proportion of acetate dramatically affected the final pH of the growth medium. A model was ...

  6. Characterization of an extracellular lipase and its chaperone from Ralstonia eutropha H16

    OpenAIRE

    Lu, Jingnan; Brigham, Christopher J.; Rha, ChoKyun; Sinskey, Anthony J.

    2012-01-01

    Lipase enzymes catalyze the reversible hydrolysis of triacylglycerol to fatty acids and glycerol at the lipid–water interface. The metabolically versatile Ralstonia eutropha strain H16 is capable of utilizing various molecules containing long carbon chains such as plant oil, organic acids, or Tween as its sole carbon source for growth. Global gene expression analysis revealed an upregulation of two putative lipase genes during growth on trioleate. Through analysis of growth and activity using...

  7. Ralstonia solanacearum Strains from Martinique (French West Indies) Exhibiting a New Pathogenic Potential

    OpenAIRE

    WICKER, Emmanuel; Grassart, Laurence; Coranson-Beaudu, Régine; Mian, Danièle; Guilbaud, Caroline; Fegan, Mark; Prior, Philippe

    2009-01-01

    We investigated a destructive pathogenic variant of the plant pathogen Ralstonia solanacearum that was consistently isolated in Martinique (French West Indies). Since the 1960s, bacterial wilt of solanaceous crops in Martinique has been caused primarily by strains of R. solanacearum that belong to either phylotype I or phylotype II. Since 1999, anthurium shade houses have been dramatically affected by uncharacterized phylotype II strains that also affected a wide range of species, such as Hel...

  8. Characterization of the Adaptive Response to Trichloroethylene-Mediated Stresses in Ralstonia pickettii PKO1

    OpenAIRE

    Park, Joonhong; Kukor, Jerome J.; Abriola, Linda M.

    2002-01-01

    In Ralstonia pickettii PKO1, a denitrifying toluene oxidizer that carries a toluene-3-monooxygenase (T3MO) pathway, the biodegradation of toluene and trichloroethylene (TCE) by the organism is induced by TCE at high concentrations. In this study, the effect of TCE preexposure was studied in the context of bacterial protective response to TCE-mediated toxicity in this organism. The results of TCE degradation experiments showed that cells induced by TCE at 110 mg/liter were more tolerant to TCE...

  9. Genome sequences of Ralstonia insidiosa type strain ATCC 49129 and strain FC1138, a strong biofilm producer isolated from a fresh-cut produce-processing plant

    Science.gov (United States)

    Ralstonia insidiosa FC1138 is a strong biofilm producer, isolated from a local fresh-cut produce processing plant. Here, we present the complete genome sequence of Ralstonia insidiosa FC1138 which includes two circular chromosomes and a plasmid. To our knowledge, this is the first reported complete ...

  10. On Estonian Folk Culture: Pro et contra

    Directory of Open Access Journals (Sweden)

    Piret Õunapuu

    2014-08-01

    Full Text Available The year 2013 was designated the year of heritage in Estonia, with any kind of intangible and tangible heritage enjoying pride of place. Heritage was written and spoken about and revived in all kinds of ways and manners. The motto of the year was: There is no heritage without heir. Cultural heritage is a comprehensive concept. This article focuses, above all, on indigenous cultural heritage and, more precisely, its tangible (so-called object part. Was the Estonian peasant, 120 years back, with his gradually increasing self-confidence, proud or ashamed of his archaic household items? Rustic folk culture was highly viable at that time. In many places people still wore folk costumes – if not daily, then at least the older generation used to wear them to church. A great part of Estonians still lived as if in a museum. Actually, this reminded of the old times that people tried to put behind them, and sons were sent to school in town for a better and more civilised future. In the context of this article, the most important agency is peasants’ attitude towards tangible heritage – folk culture in the widest sense of the word. The appendix, Pro et contra, at the end of the article exemplifies this on the basis of different sources.

  11. Oral Treatment with Extract of Agaricus blazei Murill Enhanced Th1 Response through Intestinal Epithelial Cells and Suppressed OVA-Sensitized Allergy in Mice

    Directory of Open Access Journals (Sweden)

    Go Bouike

    2011-01-01

    Full Text Available To clarify the mechanism of the antiallergic activity of Agaricus blazei Murill extract (ABME, the present paper used an in vivo allergy model and an in vitro intestinal gut model. During OVA sensitization, the serum IgE levels decreased significantly in ABME group. Interleukin (IL-4 and -5 produced from OVA-restimulated splenocytes was significantly decreased, and anti-CD3ε/CD28 antibody treatment also reduced IL-10, -4, and -5 production and increased IFN-γ production in ABME group. These results suggest that oral administration of ABME improves Th1/Th2 balance. Moreover, a coculture system constructed of Caco-2 cells and splenocytes from OT-II mice or RAW 264.7 cells indicated that the significant increases in IFN-γ production by ABME treatment. Therefore, it was concluded that the antiallergic activity of ABME was due to the activation of macrophages by epithelial cells and the promotion of the differentiation of naïve T cells into Th1 cells in the immune.

  12. Blood parameters of sheep with high infection of Haemonchus contortus and treated with “mushroom of the sun” (Agaricus blazei

    Directory of Open Access Journals (Sweden)

    Gabriela Almeida Bastos

    2016-04-01

    Full Text Available Blood and parasitological parameters of sheep experimentally infected with Haemonchus contortus and treated with “mushroom of the sun” (Agaricus blazei were assessed. Lambs infected with the nematode were divided into three groups: treated with basidiocarp powder from the fungus, wormed with trichlorfon, and a control group that did not receive anthelmintic. Split-plot design analysis was performed where the treatments were defined as plots and four periods of collection were defined as subplots. Interaction between the treatments and the collection periods for the fecal egg counts per gram of feces (FEC was observed. Treatment with “mushroom of the sun” showed anthelmintic efficacies ranging from 28.6 to 54.2%. Similar performances to weight gain were observed among the groups. A significant interaction between treatments and evaluation periods was observed for erythrocyte counts, hematocrit value, and serum concentrations of albumin and urea. The values of the mean corpuscular volume, erythrocyte distribution width, and leukocyte, neutrophil, lymphocyte, monocyte, and eosinophil counts, as well as the mean platelet volume, varied among the collection days. The administration of “mushroom of the sun” significantly reduced the FEC, did not influence on the erythrocyte count and hematocrit value, which remained within normal limits. However it increased the serum concentrations of albumin.

  13. Optimization of Inter-Simple Sequence Repeats(ISSR) Reaction System for Agaricus blazei%姬松茸ISSR特异扩增体系的研究

    Institute of Scientific and Technical Information of China (English)

    林新坚; 江秀红; 蔡海松; 郑永标; 林陈强

    2007-01-01

    为了建立稳定的姬松茸(Agaricus blazei Murill)简单序列重复区间(Inter-Simple Sequence Repeats,ISSR)分子标记技术体系,笔者通过单因子试验分别研究了模板DNA、Mg2+浓度、dNTP、引物浓度和Taq酶用量对姬松茸ISSR-PCR扩增的影响,确定了姬松茸ISSR分析的最佳PCR条件为:25μL反应体系中,模板DNA 20 ng,引物0.75μmol/L,dNTP 200μmol/L,Mg2+2.0 mmol/L,Taq DNA polymerase 1.5 U.并应用该优化体系筛选到6个适合姬松茸ISSR-PCR扩增的引物,为利用ISSR标记技术研究姬松茸的种质资源提供了参考.

  14. BUSCANDO UM BIOHERBICIDA CONTRA Cyperus sp (tiririca

    Directory of Open Access Journals (Sweden)

    Cristine Benfatti Gonzalez

    2001-01-01

    Full Text Available As an alternative to conventional control of Cyperus sp (herbaceousnutsedge, with chemical products, it rises the biological control, making use of phytopathogenic microorganisms. As results of the whole production of Cercospora henningsii e Cercospora caricis by fermentation in potato-dextrose (PD liquid medium, it was observed that both species obtained the optimum growth at 36o C. C. henningsii attained the best value after a period of 72 h of fermentation and C. caricis attained it after 60 h. The field experiments, against Cyperus sp (nutsedge, with the obtained products by liquid fermentation of Cercospora sp (C. henningsii and/or C. caribaea, andwith the use of "wet chamber", proved the pathogenic potential bioherbicide of these microorganisms. = Como alternativa ao controle convencional do Cyperus sp (tiririca usando produtos químicos, surge o controle biológico, empregando-se microrganismos fitopatógenos. Como resultados da produção massal de Cercospora henningsii eCercospora caricis através de cultivo submerso em meio de cultura batata-dextrose (BD, observou-se que ambas espécies obtiveram um crescimento ótimo a 36o C, sendo que para C. henningsii se deu com 72 h de fermentação e para C. caricis com 60 h. Os experimentos de campo, bem como os de Câmara úmida, contra Cyperus sp (tiririca,com os produtos obtidos pelo cultivo submerso de Cercospora sp (C. henningsii e/ou C. caribaea, demonstraram a patogenicidade, ou seja, o potencial bioherbicida desses microrganismos.

  15. Antibacterial Activity of the Flavonoids from Dalbergia odorifera on Ralstonia solanacearum

    Directory of Open Access Journals (Sweden)

    Wenjian Zuo

    2011-11-01

    Full Text Available Phytohemical investigation on the heartwood of Dalbergia odorifera resulted in the isolation of nine flavonoids. Their structures were elucidated as sativanone (1, (3R-vestitone (2, (3R-2',3',7-trihydroxy-4'-methoxyisoflavanone (3, (3R-4'-methoxy-2',3,7-trihydroxyisoflavanone (4, carthamidin (5, liquiritigenin (6, isoliquiritigenin (7, (3R-vestitol (8, and sulfuretin (9 based on their spectral data. All compounds were evaluated for their inhibitory activity against Ralstonia solanacearum. This is the first report about anti-R. solanacearum activity of the compounds from D. odorifera.

  16. Control of Ralstonia Solanacearum The Causal Agent of Brown Rot in Potato Using Essential Oils

    International Nuclear Information System (INIS)

    Five essential oils, namely peppermint (Mentha piperita L.), caraway (Carium carvum L.), fennel (Foeniculum vulgare Mill.), lemongrass (Cymbopogon citratus Staph.) and thyme (Thymus vulgaris), were used separately against Ralstonia solanacearum; the causal agent of brown rot in potato. The most two effective oils (peppermint and thyme) were used in vitro and in vivo after testing their effects on potato tubers buds germination. Peppermint inhibited buds germination but thyme have no effects on buds germination. In vivo, the control of brown rot using thyme oil in glass house experiment reduced the percentage of brown rot infection to 30.6% and reduced the severity of disease from 5 to 3.

  17. Biotransformation of Eugenol to Ferulic Acid by a Recombinant Strain of Ralstonia eutropha H16

    OpenAIRE

    Overhage, Jörg; Steinbüchel, Alexander; Priefert, Horst

    2002-01-01

    The gene loci ehyAB, calA, and calB, encoding eugenol hydroxylase, coniferyl alcohol dehydrogenase, and coniferyl aldehyde dehydrogenase, respectively, which are involved in the first steps of eugenol catabolism in Pseudomonas sp. strain HR199, were amplified by PCR and combined to construct a catabolic gene cassette. This gene cassette was cloned in the newly designed broad-host-range vector pBBR1-JO2 (pBBR1-JO2ehyABcalAcalB) and transferred to Ralstonia eutropha H16. A recombinant strain of...

  18. Isolation, purification and identification of three peptaibols from Trichoderma koningii with antibiotic activity against Ralstonia solancearum

    Institute of Scientific and Technical Information of China (English)

    SHEN Qing-tao; CHEN Xiu-lan; SUN Cai-yun; ZHANG Yu-zhong

    2004-01-01

    @@ The use of microorganisms for biological purposes has become an effective alternative to control plant pathogens. Trichoderma koningii Smf2 was chosen from eight Trichoderma strains for its thermostatic metabolites with antibiotic activity against Ralstonia solancearum Smith. Exclusion chromatography (LH20) was used twice to partially purify targeted metabolites combined with biological test. LC/ESI-MS, a powerful tool for rapid identification and sequence determination of peptides, identified these metabolites as three peptaibols named Trichokonin Ⅵ, Ⅶ and Ⅷ, and their sequences were confirmed with NMR.

  19. Cupriavidus pauculus (Ralstonia paucula concomitant meningitis and septicemia in a neonate: First case report from India

    Directory of Open Access Journals (Sweden)

    S Duggal

    2013-01-01

    Full Text Available Ralstonia paucula (formerly classified as CDC (Centre for Disease Control group IVc-2, Wautersia paucula; recently renamed as Cupriavidus pauculus is an environmental Gram-negative bacillus isolated from water sources and can cause serious human infections. Patients recover bacteriologically indicating low virulence. A total of 32 cases have been reported world-wide, but no isolation has ever been reported from cerebrospinal fluid or in India. The first case of R. paucula meningitis and septicemia is being reported here along with the brief summary of cases reported world-wide.

  20. Importance of Different tfd Genes for Degradation of Chloroaromatics by Ralstonia eutropha JMP134†

    OpenAIRE

    Plumeier, Iris; Pérez-Pantoja, Danilo; Heim, Sabina; González, Bernardo; Dietmar H Pieper

    2002-01-01

    The tfdCIDIEIFI, and tfdDIICIIEIIFII gene modules of plasmid pJP4 of Ralstonia eutropha JMP134 encode complete sets of functional enzymes for the transformation of chlorocatechols into 3-oxoadipate, which are all expressed during growth on 2,4-dichlorophenoxyacetate (2,4-D). However, activity of tfdI-encoded enzymes was usually higher than that of tfdII-encoded enzymes, both in the wild-type strain grown on 2,4-D and in 3-chlorobenzoate-grown derivatives harboring only one tfd gene module. Th...

  1. Advances on the Molecular Mechanism of the Interaction between Ralstonia solanacearum and Hosts

    Institute of Scientific and Technical Information of China (English)

    Dousheng WU; Gaofei JIANG; Yanmei YU; Ying LIU; Wei DING

    2013-01-01

    Ralstonia solanacearum is an important model phytopathogenic bacterium that causes bacterial wilt disease on many plant species and leads to serious eco-nomic losses. The interactions between R. solanacearum and host plants have be-come a model system for the study of plants and pathogens interactions. This pa-per reviews the advances on the molecular mechanisms between R. solanacearum and hosts interaction including the formation of plant innate immunity, the suppres-sion of plant innate immunity by this pathogen and the activation of effector-trig-gered immunity. Furthermore, we made a prospect on how to utilize the interaction mechanism between R. solanacearum and hosts to control the disease.

  2. Report on evaluation of contra-rotating solutions

    OpenAIRE

    Calcagni, Danilo; Salvatore, Francesco; Muscari, Roberto

    2013-01-01

    This report describes results of a computational study on the hydrodynamic performance of two enhanced propulsion concepts based on contra-rotating and podded propellers. The activity is performed by partner INSEAN in the framework of WP23, Task 23.1, of the STREAMLINE Project. The present report is written in fulfillment of Deliverable D23.4. The two propulsion systems consist of (i) a single-shaft propeller placed in front of a pod-mounted propeller, acting in contra-rotation with respect t...

  3. Las Violencias contra las Mujeres en una Sociedad en Guerra

    OpenAIRE

    Sánchez Gómez, Olga Amparo

    2008-01-01

    Las violencias contra las mujeres exceden los acontecimientos violentos, y abarcan su producción y reproducción como fenómeno social y discursivo. Los hechos violentos y los discursos sobre la violencia aparecen entrelazados, especialmente si se piensa en papel que juega la cultura patriarcal en el desarrollo, perpetuación y validación de las violencias contra las mujeres. “A las mujeres nos violan, nos asaltan y nos golpean, nos ultrajan, nos humillan, nos deshumanizan, nos manosean, nos ase...

  4. La violencia contra la mujer en la prensa

    Directory of Open Access Journals (Sweden)

    Dra. Encarnación Pérez Salicio

    2001-01-01

    Full Text Available Resumen de la tesis doctoral "La violencia sobre la mujer y su tratamiento en la prensa vasca", que analiza los textos sobre violencia contra la mujer aparecidos en la prensa vasca durante los años 1995, 1996 y 1997 y que viene a demostrar que existe en la prensa, al igual que en el resto de la sociedad, una forma de entender las relaciones de género que permite entender y justificar la violencia contra la mujer.

  5. Mecanismo da contração muscular

    Directory of Open Access Journals (Sweden)

    José Antonio Levy

    1960-09-01

    Full Text Available Os autores apresentam uma síntese dos conceitos atuais sôbre o mecanismo da contração muscular. Inicialmente estabelecem o conceito de membrana polarizada e despolarizada. Salientam a importância da substância contrátil (actomiosina e da energia fornecida pelo ácido adenosintrifosfórico. São discutidas também as reações químicas que se processam para a formação dessas substâncias, bem como o papel da mioglobina na contração muscular.

  6. Bibliografía: violencias contra las mujeres

    OpenAIRE

    Fuentes Vásquez, Lya Yaneth

    2001-01-01

    La violencia contra las mujeres, en sus diferentes manifestaciones, pero en particular la violencia intrafamiliar o doméstica y la violencia sexual, constituyen hoy en día en Colombia y en el mundo "cuestiones" de interés público. En efecto, en los años 90 estos tipos de agresión contra las mujeres se colocaron en las agendas tanto internacionales, como nacionales. La campaña de los diferentes organismos de las Naciones Unidas: Una vida sin violencia, un derecho nuestro, lanzada en 1998 para ...

  7. Prevención contra las drogas Prevention against drugs

    OpenAIRE

    Luis Jiménez Herrera

    2010-01-01

    Objetivo: Explorar de manera general algunos aspectos relacionados al tema de la prevención contra las drogas. Metodología: Identificación y revisión de artículos de las bases de datos: EBRARY, E-Libro, EBSCO, ProQuest, Science Direct y Springer Link, con la intención de organizar la información encontrada en las secciones siguientes: contexto general, factores involucrados en el uso y abuso de las drogas, acciones - políticas - prevención contra las drogas y hacia dónde va la investigación. ...

  8. Effects of soil type, management type and soil amendments on the survival of the potato brown rot bacterium Ralstonia solanacearum

    NARCIS (Netherlands)

    Messiha, N. A S; van Bruggen, A. H C; Franz, E.; Janse, J. D.; Schoeman-Weerdesteijn, M. E.; Termorshuizen, A. J.; van Diepeningen, A. D.

    2009-01-01

    Potato brown rot disease (Ralstonia solanacearum) is a serious economic problem in Egypt, partly due to an European Union requirement that potatoes for export to the EU should be grown in so-called pest free area's (PFA's), where fields are tested and infested fields are put under quarantine measure

  9. Effects of ecological factors on the survival and physiology of Ralstonia solanacearum biovar 2 in agricultural drainage water

    NARCIS (Netherlands)

    Elsas, van J.D.; Kastelein, P.; Vries, de P.M.; Overbeek, van L.S.

    2001-01-01

    The fate of Ralstonia solanacearum bv. 2, the causative agent of brown rot in potato, in aquatic habitats of temperate climate regions is still poorly understood. In this study, the population dynamics and the physiological response of R. solanacearum bv. 2 were tested in sterile pure water and in a

  10. Evaluation of chloropicrin as a soil fumigant against Ralstonia solanacarum in ginger (Zingiber officinale Rosc. production in China.

    Directory of Open Access Journals (Sweden)

    Liangang Mao

    Full Text Available BACKGROUND: Chloropicrin (Pic offers a potential alternative to methyl bromide (MB against Ralstonia solanacarum in ginger (Zingiber officinale Rosc. production. MB is scheduled to be withdrawn from routine use by 2015 in developing countries. METHODS: Pic treatments were evaluated in a laboratory study and in three commercial ginger fields. RESULTS: Laboratory studies showed that the EC50 value and EC80 value of Pic were 2.7 and 3.7 mg a.i. kg-1 soil, respectively. Field trials in highly infested soil revealed that treatments of Pic at the dose of 50 g m-2 covered with totally impermeable film (TIF or polyethylene film (PE sharply reduced Ralstonia solanacarum and maintained high ginger yields. Both of the Pic treatments provided results similar to, or in some cases slightly lower than, MB with respect to Ralstonia solanacarum control, plant survival, plant growth and yield. All of the fumigant treatments were significantly better than the non-treated control. CONCLUSIONS: The present study confirms that the Pic is a promising alternative with good efficacy against Ralstonia solanacarum for ginger production and could be used in integrated pest management programs in China.

  11. Ralstonia insidiosa serves as bridges in biofilm formation by foodborne pathogens Listeria monocytogenes, Salmonella enterica, and enterohemorrhagic Escherichia coli

    Science.gov (United States)

    Biofilm formation on abiotic surfaces in fresh produce processing facilities might play a role in foodborne outbreaks by providing protective microniches for pathogenic bacteria. Our previous study showed that a strain of Ralstonia insidiosa isolated from a fresh produce processing plant could enhan...

  12. Biological soil disinfestation (BSD), a new control method for potato brown rot, caused by Ralstonia solanacearum race 3 biovar 2

    NARCIS (Netherlands)

    Messiha, N.A.S.; Diepeningen, van A.D.; Wenneker, M.; Beuningen, van A.R.; Janse, J.D.; Coenen, G.C.M.; Termorshuizen, A.J.; Bruggen, van A.H.C.; Blok, W.J.

    2007-01-01

    The potential of Biological Soil Disinfestation (BSD) to control potato brown rot, caused by Ralstonia solanacearum race 3 biovar 2, was investigated. BSD involves the induction of anaerobic soil conditions by increasing microbial respiration through incorporation of fresh organic amendments (here:

  13. Ralstonia solanacearum Delta PGI-1 Strain KZR-5 Is Affected in Growth, Response to Cold Stress and Invasion of Tomato

    NARCIS (Netherlands)

    Stevens, Patricia; van Overbeek, Leonard Simon; van Elsas, Jan Dirk

    2011-01-01

    The survival and persistence of Ralstonia solanacearum biovar 2 in temperate climates is still poorly understood. To assess whether genomic variants of the organism show adaptation to local conditions, we compared the behaviour of environmental strain KZR-5, which underwent a deletion of the 17.6 kb

  14. Characterization and DNA-binding specificities of Ralstonia TAL-like effectors

    KAUST Repository

    Li, Lixin

    2013-07-01

    Transcription activator-like effectors (TALEs) from Xanthomonas sp. have been used as customizable DNA-binding modules for genome-engineering applications. Ralstonia solanacearum TALE-like proteins (RTLs) exhibit similar structural features to TALEs, including a central DNA-binding domain composed of 35 amino acid-long repeats. Here, we characterize the RTLs and show that they localize in the plant cell nucleus, mediate DNA binding, and might function as transcriptional activators. RTLs have a unique DNA-binding architecture and are enriched in repeat variable di-residues (RVDs), which determine repeat DNA-binding specificities. We determined the DNA-binding specificities for the RVD sequences ND, HN, NP, and NT. The RVD ND mediates highly specific interactions with C nucleotide, HN interacts specifically with A and G nucleotides, and NP binds to C, A, and G nucleotides. Moreover, we developed a highly efficient repeat assembly approach for engineering RTL effectors. Taken together, our data demonstrate that RTLs are unique DNA-targeting modules that are excellent alternatives to be tailored to bind to user-selected DNA sequences for targeted genomic and epigenomic modifications. These findings will facilitate research concerning RTL molecular biology and RTL roles in the pathogenicity of Ralstonia spp. © 2013 The Author.

  15. Complete genome sequence of the potato pathogen Ralstonia solanacearum UY031.

    Science.gov (United States)

    Guarischi-Sousa, Rodrigo; Puigvert, Marina; Coll, Núria S; Siri, María Inés; Pianzzola, María Julia; Valls, Marc; Setubal, João C

    2016-01-01

    Ralstonia solanacearum is the causative agent of bacterial wilt of potato. Ralstonia solanacearum strain UY031 belongs to the American phylotype IIB, sequevar 1, also classified as race 3 biovar 2. Here we report the completely sequenced genome of this strain, the first complete genome for phylotype IIB, sequevar 1, and the fourth for the R. solanacearum species complex. In addition to standard genome annotation, we have carried out a curated annotation of type III effector genes, an important pathogenicity-related class of genes for this organism. We identified 60 effector genes, and observed that this effector repertoire is distinct when compared to those from other phylotype IIB strains. Eleven of the effectors appear to be nonfunctional due to disruptive mutations. We also report a methylome analysis of this genome, the first for a R. solanacearum strain. This analysis helped us note the presence of a toxin gene within a region of probable phage origin, raising the hypothesis that this gene may play a role in this strain's virulence. PMID:26779304

  16. The Research on rDNA ITS Sequences of Four Strains of Agaricus blazei%4个姬松茸菌株rDNA ITS序列比较

    Institute of Scientific and Technical Information of China (English)

    宋瑞清; 余江勇; 冀瑞卿; 胡伟; 李喜梅

    2007-01-01

    应用通用引物ITS1和ITS4从4个姬松茸(Agaricus blazei Murill.)菌株子实体中扩增出rDNA ITS序列(登录号分别为EF195648,EF471305,EF471306,EF471307),4菌株ITS序列长度分别为734bp、700bp、724bp和735bp.通过GenBank中BLAST,四个姬松茸菌株与A.brasiliensis(AJ884651)和A.blazei(AF161013)相似率最高,分别为:94%、99%、97%和98%.四个姬松茸菌株同源性较高,达93%以上,其中,ABM-B与ABM-D相似率最高,为97%;ABM-B与ABM-C相似率为96%,ABM-A与ABM-C、ABM-C与ABM-D相似率为94%,ABM-A与ABM-D相似率为93%.

  17. Kidney Function Indices in Mice after Long Intake of Agaricus brasiliensis Mycelia (=Agaricus blazei, Agaricus subrufescens Produced by Solid State Cultivation

    Directory of Open Access Journals (Sweden)

    Dalla S. O. Roberto

    2009-01-01

    Full Text Available Problem statement: Agaricus brasiliensis (=Agaricus blazei, Agaricus subrufescens or Sun mushroom has widespread use for potential health benefits such anti-tumor and immunomodulatory effects. Studies detected that others edible mushrooms affected renal metabolism and despite the widespread use of A. brasiliensis there are no studies that address biological effects on the renal function indices after their oral administration. Therefore, this study had as objective to verify the effects on kidney function indices after long intake of A. brasiliensis mycelium. Approach: Wheat grains was cultured during 18 days with Agaricus brasiliensis mycelium by solid state culture and used for chown formulation. Groups of female Swiss mice (20 per group were fed during 14 weeks with 100 and 50% of the formulated feed denominated A100 and A50, respectively. Control group received formulated chown with wheat grains without mycelium. The water intake and excreted urine volume; the physic chemistry analysis of the urine and the serum levels of glucose, proteins, urea, creatinin and uric acid was determined (Meditron Junior-Boehringer, reagent strips Combur 10; microscopy and ADVIA 1650 Bayer. Results: A100 and A50 groups ingested 19.1 and 15.8% more water compared to C group, respectively. The urine and serum analysis showed that the verified parameters remained invariables for all groups, including glucose levels, which resulted in a 10% reduction of A100 group, without statistical difference (p>0.05 Vs C. Conclusion/Recommendations: The prolonged intake of supplemented feed with A. brasiliensis mycelium didn’t result in indicative alterations in the kidney function indices. The preventive use of the mushroom did not show any deleterious effects on kidney; however complementary studies are necessary to guarantee complete safety; possible correlation between increase of urinary excretion and hypotensive effect

  18. Kinetics of polyphenol oxidase in Agaricus blazei%姬松茸多酚氧化酶的动力学特性

    Institute of Scientific and Technical Information of China (English)

    刘文聪

    2009-01-01

    测定了姬松茸不同部位的多酚氧化酶(PPO)活性,研究了不同pH、温度、底物浓度和抑制剂对PPO活性的影响,并建立酶促褐变反应动力学方程.结果表明:在邻苯二酚为底物的条件下,姬松茸PPO的最适pH为6.4,最适温度为30 ℃,米氏常数(K_m)为6.23×10~(-3) mol·L~(-1),最大反应速度(V_(max))为1.42 mol·L~(-1)·min~(-1);柠檬酸对PPO的抑制效果不明显,NaHSO_3和异V_C-Na对PPO均有较强的抑制作用,且有效抑制的含量分别为0.18%和0.21%.%The polyphenol oxidase (PPO) activities in different parts of Agaricus blazei Murrill were determined, the effects of pH value, temperature, substrate concentration and enzyme inhibitors on PPO were studied, too. The results showed that the optimum pH value and optimum temperature for PPO were pH 6.4 and 30 ℃, respectively, the Michaelis constant (K_m) and V_(max) of PPO with pyrocatechol substrate were 6.23 × 10~(-3) mol · L~(-1) and 1.42 mol · L~(-1) · min~(-1) respectively using catechol as substrates, and the reaction kinetic equation was established. The inhibition of citric acid on PPO was not satisfactory, NaHSO_3 and sodium d-isoascorbate could inhibit effectively, and the effective concentrations were 0.18% and 0.21% , respectively.

  19. New type IV pili-related genes involved in early stages of Ralstonia solanacearum potato infection.

    Science.gov (United States)

    Siri, María Inés; Sanabria, Analía; Boucher, Christian; Pianzzola, María Julia

    2014-07-01

    This study provides insights into the pathogenesis of Ralstonia solanacearum, in particular with regards to strains belonging to phylotype IIB, sequevar 1 (IIB-1) and their interaction with potato, its natural host. We performed a comparative genomic analysis among IIB-1 R. solanacearum strains with different levels of virulence in order to identify candidate virulence genes. With this approach, we identified a 33.7-kb deletion in a strain showing reduced virulence on potato. This region contains a cluster of six genes putatively involved in type IV pili (Tfp) biogenesis. Functional analysis suggests that these proteins contribute to several Tfp-related functions such as twitching motility and biofilm formation. In addition, this genetic cluster was found to contribute to early bacterial wilt pathogenesis and colonization fitness of potato roots. PMID:24625029

  20. DEVELOPMENT OF ANTIBODY TO RALSTONIA SOLANACEARUM AND ITS APPLICATION FOR DETECTION OF BACTERIAL WILT

    Directory of Open Access Journals (Sweden)

    YADI SURYADI

    2009-01-01

    Full Text Available The serological assay for the detection of bacterial wilt caused by Ralstonia solanacearum (RSwas able to provide information regarding the presence of the pathogen in plant materials. Theresearch is was aimed to develop polyclonal antibody (PAb for RS detection. Bacterial wholecells of RS isolates mixed with glutaraldehyde were used to immunize New Zealand femalewhite rabbit. The titre of antibody in culture supernatant was 1: 1024. The PAb developed froma ground nut RS isolates reacted with infected plant samples from various locations. It was ableto detect RS antigen of crude extract and pure cultures from tomato and potato plant samples4-5using dot blot ELISA; however, the minimum detectable concentration of RS antigen was 10cells/ml. The PAb obtained in this study is sensitive enough to detect RS isolates in routineserological assay

  1. Coupling System for Food Wastes Anaerobic Digestion and Polyhydroxyalkanoates Production with Ralstonia eutropha

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    A new technology was developed to couple the anaerobic digestion of food wastes with production of polyhydroxyalkanoates (PHAs). Acetic, propionic, butyric and lactic acids were produced during food wastes anaerobic digestion and their concentrations reached 5.5, 1.8, 27.4 and 32.7 g/L, respectively under appropriate digestion conditions. The fermentative acids were transferred through a dialysis membrane to an air-lift reactor for PHA synthesis by Ralstonia eutropha. Dry cell concentration and PHA content reached 22.7 g/L and 72.6%, respectively. The obtained PHA was a copolymer of (-hydroxybutyrate (HB) and (-hydroxyvalerate (HV) with 2.8% (mole ratio) of HV units in polymer.

  2. Documento de Protección Contra Explosiones en Bodega.

    OpenAIRE

    Camas Del Aguila, Araceli

    2016-01-01

    Se presenta el Trabajo De Fin de Grado que tiene como título "Documento de Protección Contra Explosiones en Bodega". Se trata del estudio de la clasificación de zonas con riesgo de explosión dentro de una bodega, así como la evaluación de riesgos y las medidas preventivas y de protección a adoptar.

  3. The anti-tumorigenic mushroom Agaricus blazei Murill enhances IL-1β production and activates the NLRP3 inflammasome in human macrophages.

    Directory of Open Access Journals (Sweden)

    Tsung-Teng Huang

    Full Text Available Agaricus blazei Murill (AbM has been reported to possess immune activity against tumors and infections through stimulation of mononuclear phagocytes. Recently, AbM extract was shown to induce the production of the pro-inflammatory cytokine, interleukin-1β (IL-1β, in human monocytes. IL-1β is a key pro-inflammatory cytokine produced by activated macrophages and monocytes and its secretion is strictly controlled by the inflammasome. The purpose of this study is to investigate the effect of AbM water extracts on the regulation of IL-1β production and activation of the NLRP3 inflammasome in human THP-1 macrophages. The NLRP3 inflammasome consists of an NLRP3 receptor, an adaptor protein called ASC, and the inflammatory protease, caspase-1. Typically, stimulation of immune cells with microbial products results in production of pro-IL-1β, but a second stress-related signal activates the inflammasome and caspase-1, leading to processing and secretion of IL-1β. Our results show that AbM enhances transcription of IL-1β and triggers NLRP3 inflammasome-mediated IL-1β secretion in human THP-1 macrophages. AbM-mediated IL-1β secretion was markedly reduced in macrophages deficient in NLRP3 and ASC, demonstrating that the NLRP3 inflammasome is essential for AbM-induced IL-1β secretion. In addition, caspase-1 was activated and involved in proteolytic cleavage and secretion of IL-1β in AbM-treated macrophages. AbM-mediated IL-1β secretion also decreased in cells treated with cathepsin B inhibitor, suggesting that AbM can induce the release of cathepsin B. Furthermore, our data show that AbM-induced inflammasome activation requires the release of ATP, binding of extracellular ATP to the purinergic receptor P2X(7, the generation of reactive oxygen species, and efflux of potassium. Taken together, these findings reveal that AbM activates the NLRP3 inflammasome via multiple mechanisms, resulting in the secretion of IL-1β.

  4. The Role of Exopolymers in Protection of Ralstonia sp., a Cadmium-resistant Bacterium, from Cadmium Toxicity

    OpenAIRE

    Anchulee Watcharamusik; Benjaphorn Prapagdee

    2008-01-01

    Production of exopolymers is one of heavy metal resistance mechanisms in bacteria. Ralstonia sp. TAK1, a cadmium-resistant bacterium, was isolated from a high cadmium (Cd) contaminated soil at the zinc mine, Tak province, Thailand. The bacterium was cultivated in LB broth and its growth was monitored. The yields of exopolymers were measured by the phenol-sulfuric method at different growth phases. The levels of Cd resistance were quantitatively determined by survival cell assay. The highest a...

  5. Elucidation of Beta-Oxidation Pathways in Ralstonia Eutropha H16 by Examination of Global Gene Expression

    OpenAIRE

    Zeng, Qiandong; Holder, Jason W.; Mahan, Alison E.; Brigham, Christopher J.; Budde, Charles F.; Rha, ChoKyun; Sinskey, Anthony J.

    2010-01-01

    Ralstonia eutropha H16 is capable of growth and polyhydroxyalkanoate production on plant oils and fatty acids. However, little is known about the triacylglycerol and fatty acid degradation pathways of this bacterium. We compare whole-cell gene expression levels of R. eutropha H16 during growth and polyhydroxyalkanoate production on trioleate and fructose. Trioleate is a triacylglycerol that serves as a model for plant oils. Among the genes of note, two potential fatty acid β-oxidation operons...

  6. Elucidation of β-Oxidation Pathways in Ralstonia eutropha H16 by Examination of Global Gene Expression▿ †

    OpenAIRE

    Brigham, Christopher J.; Budde, Charles F.; Holder, Jason W.; Zeng, Qiandong; Mahan, Alison E.; Rha, ChoKyun; Sinskey, Anthony J.

    2010-01-01

    Ralstonia eutropha H16 is capable of growth and polyhydroxyalkanoate production on plant oils and fatty acids. However, little is known about the triacylglycerol and fatty acid degradation pathways of this bacterium. We compare whole-cell gene expression levels of R. eutropha H16 during growth and polyhydroxyalkanoate production on trioleate and fructose. Trioleate is a triacylglycerol that serves as a model for plant oils. Among the genes of note, two potential fatty acid β-oxidation operons...

  7. Degradation of the Plant Defense Signal Salicylic Acid Protects Ralstonia solanacearum from Toxicity and Enhances Virulence on Tobacco

    OpenAIRE

    Lowe-Power, Tiffany M.; Jacobs, Jonathan M.; Ailloud, Florent; Fochs, Brianna; Prior, Philippe; Allen, Caitilyn

    2016-01-01

    ABSTRACT Plants use the signaling molecule salicylic acid (SA) to trigger defenses against diverse pathogens, including the bacterial wilt pathogen Ralstonia solanacearum. SA can also inhibit microbial growth. Most sequenced strains of the heterogeneous R. solanacearum species complex can degrade SA via gentisic acid to pyruvate and fumarate. R. solanacearum strain GMI1000 expresses this SA degradation pathway during tomato pathogenesis. Transcriptional analysis revealed that subinhibitory SA...

  8. Optimal Medium Composition to Enhance Poly-β-hydroxybutyrate Production by Ralstonia eutropha Using Cane Molasses as Sole Carbon Source

    OpenAIRE

    Ali Bozorg; Manouchehr Vossoughi; Akhtarolmoluk Kazemi; Iran Alemzadeh

    2015-01-01

    In order to reduce the costs associated with Poly-β-hydroxybutyrate production, growth and Poly-β-hydroxybutyrate production of Ralstonia eutropha were studied in batch culture on different carbon sources. Experiments were designed and conducted to not only lower the cost of Poly-β-hydroxybutyrate production by using inexpensive substrates, but also to increase Poly-β-hydroxybutyrate production by optimizing the culture medium composition. Low cost, abundant carbon sources, including cane mol...

  9. Mutants of Ralstonia (Pseudomonas) solanacearum sensitive to antimicrobial peptides are altered in their lipopolysaccharide structure and are avirulent in tobacco

    OpenAIRE

    Titarenko, Elena; Lopez Solanilla, Emilia; García Olmedo, Francisco; Rodriguez Palenzuela, Pablo

    1997-01-01

    Ralstonia solanacearum K60 was mutagenized with the transposon Tn5, and two mutants, M2 and M88, were isolated. Both mutants were selected based on their increased sensitivity to thionins, and they had the Tn5 insertion in the same gene, 34 bp apart. Sequence analysis of the interrupted gene showed clear homology with the rfaF gene from Escherichia coli and Salmonella typhimurium (66% similarity), which encodes a heptosyltransferase involved in the synthesis of the lipopolysaccharide (LPS) co...

  10. HOSPEDANTES DE Ralstonia solanacearum EN PLANTACIONES DE BANANO Y PLÁTANO EN COLOMBIA HOSTS OF Ralstonia solanacearum ON BANANA AND PLANTAIN PLANTATIONS IN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Mónica Obregón Barrios

    2008-12-01

    Full Text Available La enfermedad del “Moko” causada por la bacteria Ralstonia solanacearum Raza 2, es uno de los problemas fitopatológicos más limitantes en la producción de plátano y banano en las regiones productoras. La bacteria cuenta con un amplio rango de hospederos, cerca de 50 familias botánicas y más de 200 especies. En plantaciones de banano y plátano de Colombia la bacteria se asocia con arvenses que se encuentran en altas poblaciones contribuyendo a su sobrevivencia y permanencia en el campo. Para la determinación de los hospedantes silvestres sintomáticos y asintomáticos en áreas afectadas en plantaciones de plátano y banano del Valle del Cauca, Quindío y Urabá, se realizó la colección de arvenses frecuentes en los focos afectados y el aislamiento en medio semiselectivo SMSA de la bacteria. 124 aislamientos fueron sometidos a pruebas bioquímicas y de patogenicidad en plantas de banano y plátano bajo condiciones similares a las de Urabá y Valle del Cauca. En las pruebas de patogenicidad 67 de 124 aislamientos evaluados fueron positivos, reproduciendo los síntomas típicos de la enfermedad como flacidez, clorosis, amarillamiento de hojas y muerte de las plantas. Se encontraron nuevas especies de arvenses hospedantes de la bacteria que corresponden a Chaptalia nutans, Seneciodes cinerea, Tripogandra glandulosa, Plenax hirtus, Peperomia pellucida, Tripogandra cumanenses, Desmodium sp, y Cissus sicyoides esta última perteneciente a la familia Vitaceae, la cual corresponde al registro de una nueva familia como hospedera. Se confirmó la presencia de la bacteria en hospedantes silvestres previamente mencionados.The moko disease caused by the bacterium Ralstonia solanacearum race 2, is one of the most limiting phytosanitary problem to deal with in plantain and banana production in Colombia . The bacterium has a wide host range, nearly 50 botanical families and over two hundred species. In plantain and banana plantations in Colombia

  11. The Role of Exopolymers in Protection of Ralstonia sp., a Cadmium-resistant Bacterium, from Cadmium Toxicity

    Directory of Open Access Journals (Sweden)

    Anchulee Watcharamusik

    2008-07-01

    Full Text Available Production of exopolymers is one of heavy metal resistance mechanisms in bacteria. Ralstonia sp. TAK1, a cadmium-resistant bacterium, was isolated from a high cadmium (Cd contaminated soil at the zinc mine, Tak province, Thailand. The bacterium was cultivated in LB broth and its growth was monitored. The yields of exopolymers were measured by the phenol-sulfuric method at different growth phases. The levels of Cd resistance were quantitatively determined by survival cell assay. The highest amount of exopolymers (0.69 mg glucose equivalent/ mg dry weight was found at the stationary phase and sharply decreased at the late-stationary phase. In addition to high production of exopolymers at the stationary phase, Ralstonia sp. TAK1 was more resistant to Cd than that of exponential phase cells. These results suggested that the resistance to Cd toxicity in Ralstonia sp. TAK1 at the stationary phase is mediated by exopolymer production. Contradictorily, there was no correlation between Cd resistance level and exopolymer production of cells at exponential phase indicating that other mechanism(s is responsible for Cd resistance of exponential phase cells. In addition, 0.4 mM CdCl2 was able to induce the increasing of exopolymers at the mid-exponential phases compared to uninduced cells. Exopolymer production of Cd-induced cells was constant from the mid-stationary to late-stationary phase. However, the highest exopolymers was found in uninduced cells at the stationary phase.

  12. The influence of substrate source on the growth of Ralstonia eutropha, aiming at the production of polyhydroxyalkanoate

    Directory of Open Access Journals (Sweden)

    Marangoni C.

    2001-01-01

    Full Text Available With the aim of producing polyhydroxyalkanoates, a study of the influence of culture conditions (nitrogen and carbon sources and temperature on the growth of Ralstonia eutropha in stirred flasks was carried out and the use of some low-cost sources (hydrolyzed lactose, inverted sugar and corn steep liquor as evaluated. The best specific growth rate was obtained when inverted sugar was utilized as the substrate (mumax = 0.26 h-1. Two different phases in the assimilation of the carbon source were observed when hydrolyzed lactose was present, suggesting the assimilation first of glucose and then of galactose. To confirm the growth of Ralstonia eutropha using galactose as the only carbon source, experiments were carried out and the results showed that this bacterium is able to grow in the presence of this sugar at a growth rate of 0.13 h-1. The use of galactose by Ralstonia eutropha for its growth has not been reported in the literature until now. Corn steep liquor was found to be a viable alternative nitrogen source to ammonium sulfate. The results of experiments carried out at 30°C and 34°C were similar.

  13. Cleaning-resistant Cupriavidus and Ralstonia bacteria contaminating spacecrafts and the ultra clean rooms they are assembled in.

    Science.gov (United States)

    Leys, N.; Dams, A.; Bossus, A.; Provoost, A.; Venkateswaran, K.; Mergeay, M.

    Background Planetary Protection is preventing microbial contamination of both the target planet and the Earth when sending spacecrafts on interplanetary space mission It is important to preserve the natural conditions of other planets and to not bring with robots earthly microbes forward contamination when looking for spores of extra terrestrial life Spacecrafts and the ultra clean rooms they are assembled in are routinely monitored for microbial contamination It was shown that the floor air and surfaces of such spacecraft assembly rooms often contain Cupriavidu s and Ralstonia bacteria These bacteria not only contaminated the clean rooms but have also been found prior-to-flight on surfaces of space robots such as the Mars Odyssey Orbiter La Duc et al 2003 and even in-flight in ISS cooling water and Shuttle drinking water unpublished Aim In this study several Cupriavidus and Ralstonia strains isolated from space craft assembling rooms and spacecrafts were characterized and analysed in detail Results The analysis showed that all the Cupriavidus and Ralstonia clean-room isolates are able to use a wide variety of substrates as carbon sources including ethanol and acetone In addition they all have accumulated moderate resistances to an extraordinary collection of physical and chemical antimicrobial agents Some of the test strains were able to form biofilms on plastic and metal materials used for space robots a nutritional and

  14. Nuevos avances y retos en la lucha contra el terrorismo

    Directory of Open Access Journals (Sweden)

    José Escribano Úbeda-Portugués

    2009-01-01

    Full Text Available El fenómeno del Terrorismo tiene un carácter eminentemente de consecución de objetivos políticos, lo cual diferencia tal actividad ilícita respecto a las actividades ilícitas propias de la Delincuencia Organizada. Aunque en la financiación del Terrorismo, los grupos terroristas realizan actividades ilícitas propias de la Delincuencia Organizada como el tráfico ilícito de drogas, el tráfico ilícito de armas o el Blanqueo de Capitales.La evolución normativa contra el Terrorismo es amplia, habiéndose desarrollado proyectos de instrumentos jurídico internacionales ya en el Derecho Internacional Clásico.En cuanto al marco jurídico actual, cabe resaltar que la obra de Naciones Unidas al respecto es amplia. Existen actualmente 13 Convenios sobre las distintas manifestaciones del Terrorismo. De ellos hay cuatro Convenios sobre Terrorismo Aéreo; dos sobre el Terrorismo Marítimo; dos sobre el Terrorismo Nuclear; uno sobre el Terrorismo contra personas internacionalmente protegidas; uno contra el Terrorismo de toma de rehenes; uno sobre explosivos plásticos; uno sobre atentados terroristas con bombas, y por último, un Convenio Internacional contra la financiación del Terrorismo.La obra de Naciones Unidas al respecto es amplia, pero está fragmentada en torno a cada una de las manifestaciones del Terrorismo. Bien es verdad que Naciones Unidas ha conseguido crear órganos ad hoc en el marco del Consejo de Seguridad o que ha realizado numerosas Resoluciones al respecto tanto del Consejo de Seguridad, como a nivel de la Asamblea General. Estamos, por tanto, ante un carácter fragmentario del marco jurídico actual en la lucha contra el Terrorismo en el plano de Naciones Unidas por falta de consenso sobre el concepto mismo de “ Terrorismo “.El problema de definir de forma consensuada el concepto se encuentra en la dificultad de trazar la línea divisoria entre actividades terroristas y movimientos de liberación nacional. Por ello se

  15. Efeito protetor do aleitamento materno contra a obesidade infantil

    Directory of Open Access Journals (Sweden)

    Balaban Geni

    2004-01-01

    Full Text Available OBJETIVO: Apresentar uma revisão da literatura sobre a hipótese de que o aleitamento materno teria um efeito protetor contra a obesidade infantil, a plausibilidade biológica dessa hipótese e os mecanismos potencialmente envolvidos. FONTES DOS DADOS: Informações coletadas a partir de artigos publicados em revistas científicas indexadas, livros e teses de pós-graduação. A maioria dos artigos foi identificada a partir das bases de dados MEDLINE e Scielo, usando as palavras-chave "aleitamento materno", "sobrepeso", "obesidade", "crianças" e "adolescentes". O período pesquisado foi de 1980 a 2002. Outros artigos foram identificados a partir das referências bibliográficas citadas nos primeiros artigos. SÍNTESE DOS DADOS: A maioria dos estudos revisados relatou um efeito protetor do aleitamento materno contra a obesidade infantil; alguns estudos não encontraram associação entre aleitamento materno e obesidade; um estudo, com um pequeno tamanho amostral, relatou maior adiposidade entre as crianças que receberam aleitamento materno. Diferentes definições de exposição e desfecho dificultam a comparação entre os estudos. Imprinting metabólico foi sugerido como um mecanismo potencialmente envolvido para explicar a associação. Aspectos comportamentais também podem estar envolvidos. CONCLUSÃO: O aleitamento materno parece ter um efeito protetor contra a obesidade infantil, porém essa questão merece uma investigação mais aprofundada.

  16. Estado actual de la vacuna conjugada contra Streptococcus pneumoniae

    Directory of Open Access Journals (Sweden)

    Hernán Sierra- Fernandez

    2006-06-01

    Full Text Available Las infecciones por Streptococcus pneumoniae son frecuentes en la población pediátrica especialmente en los niños menores de 2 años. El S. pneumoniae puede producir infecciones invasoras con una alta tasa de mortalidad y morbilidad como lo son las meningitis bacterianas, la neumonía y bacteremias siendo a la vez el agente que con mayor frecuencia se detecta en el oído medio de niños con otitis media. En la actualidad existe una vacuna conjugada contra esta bacteria que protege contra los siete serotipos de S. pneumoniae más frecuentes en el mundo y que a su vez son los mismos serotipos que presentan una mayor incidencia de resistencia a los antibioticos de uso frecuente. La vacuna no solo protege contra este tipo de infecciones sino que se ha demostrado que disminuye la colonización nasofaringea de los niños que han recibido la vacuna produciendo a su vez, una reducción en el numero de infecciones, por esta bacteria, en poblaciones de personas mayores de 5 años, incluyendo adultos y personas mayores a los 65 años (efecto rebaño. Con base en los serotipos aislados en niños costarricenses con otitis media, se puede calcular que la cobertura de esta vacuna en Costa Rica sería de aproximadamente un 74% e incluyendo mayoritariamente, los serotipos que presentan resistencia antimicrobriana más frecuentemente.

  17. Tratamiento contra la rabia humana: un poco de su historia

    OpenAIRE

    Maria Cristina Schneider; Carlos Santos-Burgoa

    1994-01-01

    El presente trabajo es una revisión histórica del tratamiento utilizado contra la rabia humana, desde la antigüedad hasta el momento actual. Pretende hacer una analogía entre el concepto de causa predominante en la época y el tipo de tratamiento utilizado. Los griegos antiguos tenían la diosa Artemisa como sanadora de la rabia y ya utilizaban la cauterización de la herida. Los pueblos del siglo I conocían la capacidad infecciosa en la saliva de perros rabiosos, llamando a ese material de vene...

  18. Nuevos avances y retos en la lucha contra el terrorismo

    OpenAIRE

    José Escribano Úbeda-Portugués

    2009-01-01

    El fenómeno del Terrorismo tiene un carácter eminentemente de consecución de objetivos políticos, lo cual diferencia tal actividad ilícita respecto a las actividades ilícitas propias de la Delincuencia Organizada. Aunque en la financiación del Terrorismo, los grupos terroristas realizan actividades ilícitas propias de la Delincuencia Organizada como el tráfico ilícito de drogas, el tráfico ilícito de armas o el Blanqueo de Capitales.La evolución normativa contra el Terrorismo es amplia, habié...

  19. Direitos humanos e violência contra as mulheres: uma luta contra a sociedade patriarcal-racista-capitalista

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    Mirla Cisne

    2015-12-01

    Full Text Available O objetivo deste artigo é  problematizar a importância da luta por direitos humanos no combate às violências contras as mulheres, inserindo essa luta nos limites e contradições de uma sociedade que têm a desigualdade e a exploração de classe, raça/etnia e sexo como elementos constituintes. Nesse entendimento, as múltiplas formas de violência contra a mulher, seja ela física, psicológica, sexual, obstétrica, patrimonial ou social, não resultam das relações individuais isoladamente, mas, sobretudo, são estruturadas pelas relações sociais de sexo, classe, raça/etnia que consubstanciam a sociedade patriarcal-racista-capitalista. São essas relações sociais que dão base à ideologia que naturaliza situações de violências às mulheres. É essa sociedade permeada por relações de opressão, exploração e também apropriação sobre as mulheres que promove cotidianamente situações de violência permeadas e potencializadas pela desigualdade de classe, pelo sexismo e pelo racismo, o que não apenas provoca a demanda pela luta por direitos humanos, mas a exige.  Falar em direitos humanos para as mulheres é falar na necessidade de lutar por uma sociedade sem violência e sem as apropriações, explorações e opressões que dão corpo as múltiplas violências contra as mulheres.

  20. New Insights into the Antibacterial Activity of Hydroxycoumarins against Ralstonia solanacearum

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    Liang Yang

    2016-04-01

    Full Text Available Coumarins are important plant-derived natural products with wide-ranging bioactivities and extensive applications. In this study, we evaluated for the first time the antibacterial activity and mechanisms of action of coumarins against the phytopathogen Ralstonia solanacearum, and investigated the effect of functional group substitution. We first tested the antibacterial activity of 18 plant-derived coumarins with different substitution patterns, and found that daphnetin, esculetin, xanthotol, and umbelliferone significantly inhibited the growth of R. solanacearum. Daphnetin showed the strongest antibacterial activity, followed by esculetin and umbelliferone, with MICs of 64, 192, and 256 mg/L, respectively, better than the archetypal coumarin with 384 mg/L. We further demonstrated that the hydroxylation of coumarins at the C-6, C-7 or C-8 position significantly enhanced the antibacterial activity against R. solanacearum. Transmission electron microscope (TEM and fluorescence microscopy images showed that hydroxycoumarins may interact with the pathogen by mechanically destroying the cell membrane and inhibiting biofilm formation. The antibiofilm effect of hydroxycoumarins may relate to the repression of flagellar genes fliA and flhC. These physiological changes in R. solanacearum caused by hydroxycoumarins can provide information for integral pathogen control. The present findings demonstrated that hydroxycoumarins have superior antibacterial activity against the phytopathogen R. solanacearum, and thus have the potential to be applied for controlling plant bacterial wilt.

  1. Production of Poly (3-Hydroxybutyric Acid) by Ralstonia eutropha in a Biocalorimeter and its Thermokinetic Studies.

    Science.gov (United States)

    Anusha, Subramanian Mohanakrishnan; Leelaram, Santharam; Surianarayanan, Mahadevan

    2016-07-01

    Bioplastic production from microbial sources is an emerging area which provides opportunities even to convert the wastes into bioplastics. Poly (3-hydroxybutyric acid), commonly called as PHB, is a bioplastic, which is stored as intracellular cytoplasmic inclusions in microorganisms. The objectives of this study are to calorimetrically monitor the PHB production and evaluate the thermokinetic data in a bioreaction calorimeter (BioRC1e). Thus, a well-known PHB-producing bacteria Ralstonia eutropha was selected for batch process in a bioreaction calorimeter. The metabolic heat generated was found to be correlated with the biomass, substrate consumption, oxygen uptake rate (OUR), carbon dioxide evolution rate (CER) and PHB production. The OUR pattern explained the oxidative metabolism of the strain R. eutropha. The heat yields due to biomass and glucose consumption during PHB production were found to be 12.56 and 13.56 kJ/g, respectively. The oxycalorific value obtained for the PHB production was 443.80 kJ/mol of O2. The concentration of PHB obtained in BioRC1e was 4.33 g/L with a production rate of 0.09 g/L/h. The chemical structure of the extracted PHB by R. eutropha was confirmed using fourier transform infrared spectroscopy (FT-IR) and (1)H and (13)C nuclear magnetic resonance (NMR) analysis. PMID:27003281

  2. Crystal structure of (R)-3-hydroxybutyryl-CoA dehydrogenase PhaB from Ralstonia eutropha.

    Science.gov (United States)

    Kim, Jieun; Chang, Jeong Ho; Kim, Eun-Jung; Kim, Kyung-Jin

    2014-01-17

    (R)-3-hydroxybutyryl-CoA dehydrogenase PhaB from Ralstonia eutropha H16 (RePhaB) is an enzyme that catalyzes the NADPH-dependent reduction of acetoacetyl-CoA, an intermediate of polyhydroxyalkanoates (PHA) synthetic pathways. Polymeric PHA is used to make bioplastics, implant biomaterials, and biofuels. Here, we report the crystal structures of RePhaB apoenzyme and in complex with either NADP(+) or acetoacetyl-CoA, which provide the catalytic mechanism of the protein. RePhaB contains a Rossmann fold and a Clamp domain for binding of NADP(+) and acetoacetyl-CoA, respectively. The NADP(+)-bound form of RePhaB structure reveals that the protein has a unique cofactor binding mode. Interestingly, in the RePhaB structure in complex with acetoacetyl-CoA, the conformation of the Clamp domain, especially the Clamp-lid, undergoes a large structural change about 4.6 Å leading to formation of the substrate pocket. These structural observations, along with the biochemical experiments, suggest that movement of the Clamp-lid enables the substrate binding and ensures the acetoacetyl moiety is located near to the nicotinamide ring of NADP(+). PMID:24211201

  3. Metabolic carbon fluxes and biosynthesis of polyhydroxyalkanoates in Ralstonia eutropha on short chain fatty acids.

    Science.gov (United States)

    Yu, Jian; Si, Yingtao

    2004-01-01

    Short chain fatty acids such as acetic, propionic, and butyric acids can be synthesized into polyhydroxyalkanoates (PHAs) by Ralstonia eutropha. Metabolic carbon fluxes of the acids in living cells have significant effect on the yield, composition, and thermomechanical properties of PHA bioplastics. Based on the general knowledge of central metabolism pathways and the unusual metabolic pathways in R. eutropha, a metabolic network of 41 bioreactions is constructed to analyze the carbon fluxes on utilization of the short chain fatty acids. In fed-batch cultures with constant feeding of acid media, carbon metabolism and distribution in R. eutropha were measured involving CO2, PHA biopolymers, and residual cell mass. As the cells underwent unsteady state metabolism and PHA biosynthesis under nitrogen-limited conditions, accumulative carbon balance was applied for pseudo-steady-state analysis of the metabolic carbon fluxes. Cofactor NADP/NADPH balanced between PHA synthesis and the C3/C4 pathway provided an independent constraint for solution of the underdetermined metabolic network. A major portion of propionyl-CoA was directed to pyruvate via the 2-methylcitrate cycle and further decarboxylated to acetyl-CoA. Only a small amount of propionate carbon (acetic acid in the medium. Malate is the node of the C3/C4 pathway and TCA cycle and its decarboxylation to dehydrogenation ranges from 0.33 to 1.28 in response to the demands on NADPH and oxaloacetate for short chain fatty acids utilization. PMID:15296425

  4. Simple sequence repeats and compositional bias in the bipartite Ralstonia solanacearum GMI1000 genome

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    Vandamme Peter

    2003-03-01

    Full Text Available Abstract Background Ralstonia solanacearum is an important plant pathogen. The genome of R. solananearum GMI1000 is organised into two replicons (a 3.7-Mb chromosome and a 2.1-Mb megaplasmid and this bipartite genome structure is characteristic for most R. solanacearum strains. To determine whether the megaplasmid was acquired via recent horizontal gene transfer or is part of an ancestral single chromosome, we compared the abundance, distribution and compositon of simple sequence repeats (SSRs between both replicons and also compared the respective compositional biases. Results Our data show that both replicons are very similar in respect to distribution and composition of SSRs and presence of compositional biases. Minor variations in SSR and compositional biases observed may be attributable to minor differences in gene expression and regulation of gene expression or can be attributed to the small sample numbers observed. Conclusions The observed similarities indicate that both replicons have shared a similar evolutionary history and thus suggest that the megaplasmid was not recently acquired from other organisms by lateral gene transfer but is a part of an ancestral R. solanacearum chromosome.

  5. Electrospun Fibres of Polyhydroxybutyrate Synthesized by Ralstonia eutropha from Different Carbon Sources

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    Victor U. Irorere

    2014-01-01

    Full Text Available The properties of PHB may be affected by the carbon source used in its production and this may affect nanofibres made from this polymer by electrospinning. In this study, P(3-HB was produced from glucose, rapeseed oil, and olive oil by Ralstonia eutropha H16. Cell growth and polymer production were higher in olive or rapeseed oil supplemented media compared to glucose supplemented media. FT-IR, 1H-, 13C-NMR, and ESI/MSn confirmed that the synthesized polymers were P(3-HB. SEM micrograph showed the formation of nanofibres from P(3-HB samples with the fibre diameters dependent on the source of the carbon used in polymer synthesis and the concentration of the polymer in the electrospinning solution. GPC showed that P(3-HB from glucose (G-PHB had a higher molecular weight (7.35×105 gmol−1 compared to P(3-HB from rapeseed (R-PHB and olive (O-PHB oil. Differential scanning calorimetry (DSC showed that the crystallinity of the electrospun polymers reduces with decreasing polymer concentration with R-PHB having lower crystallinity at all concentrations used. These observation shows that more PHB yield can be obtained using either rapeseed or olive oil compared to glucose with glucose producing polymers of higher molecular weight. It also show that electrospinning could be used to reduce the crystallinity of PHB fibres.

  6. Blocking Pseudomonas Aeruginosa, Chromobacterium Violaceum, and Ralstonia Solanacearum Adhesion by Fruit Glycans

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    Nechama Gilboa-Garber

    2014-05-01

    Full Text Available The soil-borne pathogens Pseudomonas aeruginosa, Chromobacterium violaceum, and Ralstonia solanacearum, possess the lectins PA-IL, PA-IIL, CV-IIL, RSL, and RS-IIL, which may mediate their adhesion onto animal and plant target cells, enabling infections. Such infections may be prevented by surrounding the sensitive cells with competing glycans, which act as glycodecoys that block patholectins and capture pathogens that bear them. The above-mentioned five lectins have been used by us as probes to reveal progeny-protecting glycodecoys in avian eggs, milk, royal jelly, and seeds. Herein we describe their usage as probes for fruit and onion glycodecoys. They revealed lectin-blocking galactosides, fructose, oligo/polysaccharides, and glycoproteins in most of the examined fruits. Galactose/arabinose- bearing compounds were detected by PA-IL in banana, carob, pineapple, pomegranate, kiwifruit, and dates. Diverse mannose/fucose-bearing compounds were detected by PA-IIL in banana, onion, and pomegranate; by CV-IIL in pineapple; by RSL in banana, carob, date, onion, and pineapple, and by RS-IIL in date and fig. The results show the high efficiency of these lectins as probes for natural infection-preventing glycodecoys. Usage of fruit and seed embryo-protecting glycodecoys, unless allergenic, is advantageous for preventing animal intestinal and external and plant wilting infections since they are natural, harmless, inexpensive, and widely available.

  7. A novel alkaline lipase from Ralstonia with potential application in biodiesel production.

    Science.gov (United States)

    Yoo, Hah-Young; Simkhada, Jaya Ram; Cho, Seung Sik; Park, Don Hee; Kim, Seung Wook; Seong, Chi Nam; Yoo, Jin Cheol

    2011-05-01

    With the aim of isolating a biocatalyst able to catalyze biodiesel production from microbial source, Ralstonia sp. CS274 was isolated and a lipase from the strain (RL74) was purified. Molecular weight of RL74 was estimated to be 28,000 Da by SDS-PAGE. The activity was highest at 50-55°C and pH 8.0-9.5 and was stable at pH 7.0-12.0 and up to 45°C. It was resistant to oxidizing and reducing agents and the activity was enhanced by detergents. RL74 was 1,3 specific and K(m) and V(max) for p-nitrophenyl palmitate were 2.73 ± 0.6mM and 101.4 ± 1.9 mM/min mg, respectively. N-terminal amino acid sequence showed partial homology with that of Penicillium lipases. RL74 produced biodiesel more efficiently in palm oil than in soybean oil; and the production was highest at pH 8.0, at 5% methanol and at 20% water content. PMID:21388805

  8. Diversity of Ralstonia solanacearum in French Guiana expands knowledge of the "emerging ecotype".

    Science.gov (United States)

    Deberdt, P; Guyot, J; Coranson-Beaudu, R; Launay, J; Noreskal, M; Rivière, P; Vigné, F; Laplace, D; Lebreton, L; Wicker, E

    2014-06-01

    Although bacterial wilt remains a major plant disease throughout South America and the Caribbean, the diversity of prevalent Ralstonia solanacearum populations is largely unknown. The genetic and phenotypic diversity of R. solanacearum strains in French Guiana was assessed using diagnostic polymerase chain reactions and sequence-based (egl and mutS) genotyping on a 239-strain collection sampled on the families Solanaceae and Cucurbitaceae, revealing an unexpectedly high diversity. Strains were distributed within phylotypes I (46.9%), IIA (26.8%), and IIB (26.3%), with one new endoglucanase sequence type (egl ST) found within each group. Phylotype IIB strains consisted mostly (97%) of strains with the emerging ecotype (IIB/sequevar 4NPB). Host range of IIB/4NPB strains from French Guiana matched the original emerging reference strain from Martinique. They were virulent on cucumber; virulent and highly aggressive on tomato, including the resistant reference Hawaii 7996; and only controlled by eggplant SM6 and Surya accessions. The emerging ecotype IIB/4NPB is fully established in French Guiana in both cultivated fields and uncultivated forest, rendering the hypothesis of introduction via ornamental or banana cuttings unlikely. Thus, this ecotype may have originated from the Amazonian region and spread throughout the Caribbean region.

  9. Elicitor-Induced Defense Responses in Solanum lycopersicum against Ralstonia solanacearum

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    Sudhamoy Mandal

    2013-01-01

    Full Text Available We investigated on important parameters of induced resistance in hydroponic tomato (Solanum lycopersicum against Ralstonia solanacearum using the elicitors chitosan (CHT, salicylic acid (SA, and jasmonic acid (JA. The increase in total phenolic content of roots by the elicitors was significantly higher than control. Most pronounced increase in lignin synthesis was triggered by SA followed by CHT. At 24 h post-elicitation (hpe, the activity of phenylalanine ammonia lyase was 4.5 times higher than control elicited by CHT. The peroxidase activity was about 86 nkat/mg protein at 24 hpe in case of SA and 78 nkat/mg protein in case of CHT. The activity of polyphenol oxidase increased several folds by the elicitors. Cinnamyl alcohol dehydrogenase activity increased to the maximum at 48 hpe under the influence of CHT. The results indicate that the elicitors SA and CHT induced effective defense responses in tomato plants against R. solanacearum. This was evident from reduced vascular browning and wilting symptoms of tomato plants treated with SA and CHT and challenged subsequently with R. solanacearum. This reduced disease incidence in tomato by SA and CHT may be a result of cell wall strengthening through deposition of lignin and the coincident induction of defense enzymes.

  10. Ethanedisulfonate is degraded via sulfoacetaldehyde in Ralstonia sp. strain EDS1.

    Science.gov (United States)

    Denger, K; Cook, A M

    2001-07-01

    Aerobic enrichment cultures (11) yielded three cultures able to utilise ethane-1,2-disulfonate as sole source of carbon and energy in salts medium. Two pure cultures were obtained and we worked with strain EDS1, which was assigned to the genus Ralstonia on the basis of its 16S rDNA sequence and simple taxonomic tests. Strain EDS1 utilised at least seven alkane(di)sulfonates, ethane-1,2-disulfonate, taurine, isethionate, sulfoacetate, sulfoacetaldehyde and propane-1,3-disulfonate, as well as methanesulfonate and formate. Growth with ethanedisulfonate was concomitant with substrate disappearance and the formation of 2 mol sulfate per mol substrate. The growth yield, 7 g protein (mol C)(-1), indicated quantitative utilisation of the substrate. Ethanedisulfonate-dependent oxygen uptake of whole cells during growth rose to a maximum before the end of growth and then sank rapidly; this was interpreted as evidence for an inducible desulfonative oxygenase that was not active in cell extracts. Inducible sulfoacetaldehyde sulfo-lyase was detected at high activity. Inducible degradation of taurine or isethionate or sulfoacetate via sulfoacetaldehyde sulfo-lyase is interpreted from the data.

  11. Proteome Analysis of Disease Resistance against Ralstonia solanacearum in Potato Cultivar CT206-10.

    Science.gov (United States)

    Park, Sangryeol; Gupta, Ravi; Krishna, R; Kim, Sun Tae; Lee, Dong Yeol; Hwang, Duk-Ju; Bae, Shin-Chul; Ahn, Il-Pyung

    2016-02-01

    Potato is one of the most important crops worldwide. Its commercial cultivars are highly susceptible to many fungal and bacterial diseases. Among these, bacterial wilt caused by Ralstonia solanacearum causes significant yield loss. In the present study, integrated proteomics and genomics approaches were used in order to identify bacterial wilt resistant genes from Rs resistance potato cultivar CT-206-10. 2-DE and MALDI-TOF/TOF-MS analysis identified eight differentially abundant proteins including glycine-rich RNA binding protein (GRP), tomato stress induced-1 (TSI-1) protein, pathogenesis-related (STH-2) protein and pentatricopeptide repeat containing (PPR) protein in response to Rs infection. Further, semi-quantitative RT-PCR identified up-regulation in transcript levels of all these genes upon Rs infection. Taken together, our results showed the involvement of the identified proteins in the Rs stress tolerance in potato. In the future, it would be interesting to raise the transgenic plants to further validate their involvement in resistance against Rs in potato. PMID:26889112

  12. Proteome Analysis of Disease Resistance against Ralstonia solanacearum in Potato Cultivar CT206-10

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    Sangryeol Park

    2016-02-01

    Full Text Available Potato is one of the most important crops worldwide. Its commercial cultivars are highly susceptible to many fungal and bacterial diseases. Among these, bacterial wilt caused by Ralstonia solanacearum causes significant yield loss. In the present study, integrated proteomics and genomics approaches were used in order to identify bacterial wilt resistant genes from Rs resistance potato cultivar CT-206-10. 2-DE and MALDI-TOF/TOF-MS analysis identified eight differentially abundant proteins including glycine-rich RNA binding protein (GRP, tomato stress induced-1 (TSI-1 protein, pathogenesis-related (STH-2 protein and pentatricopeptide repeat containing (PPR protein in response to Rs infection. Further, semi-quantitative RT-PCR identified up-regulation in transcript levels of all these genes upon Rs infection. Taken together, our results showed the involvement of the identified proteins in the Rs stress tolerance in potato. In the future, it would be interesting to raise the transgenic plants to further validate their involvement in resistance against Rs in potato.

  13. Metabolic engineering of Ralstonia eutropha for the biosynthesis of 2-hydroxyacid-containing polyhydroxyalkanoates.

    Science.gov (United States)

    Park, Si Jae; Jang, Young-Ah; Lee, Hyuk; Park, A-Reum; Yang, Jung Eun; Shin, Jihoon; Oh, Young Hoon; Song, Bong Keun; Jegal, Jonggeon; Lee, Seung Hwan; Lee, Sang Yup

    2013-11-01

    Polyhydroxyalkanoates (PHAs) are bio-based and biodegradable polyesters synthesized by numerous microorganisms. PHAs containing 2-hydroxyacids as monomer units have attracted much attention, but their production has not been efficient. Here, we metabolically engineered Ralstonia eutropha strains for the in vivo synthesis of PHAs containing 2-hydroxyacids as monomers. This was accomplished by replacing the R. eutropha phaC gene in the chromosome with either the R. eutropha phaC S506G A510K gene, which contains two point mutations, or the Pseudomonas sp. MBEL 6-19 phaC1437 gene. In addition, the R. eutropha phaAB genes in the chromosome were replaced with the Clostridium propionicum pct540 gene. All of the engineered R. eutropha strains produced PHAs containing 2-hydroxyacid monomers, including lactate and 2-hydroxybutyrate (2HB), along with 3-hydroxybutyrate (3HB) and/or 3-hydroxyvalerate (3HV), when they were cultured in nitrogen-free medium containing 5 g/L lactate or 4 g/L 2HB and 20 g/L glucose as carbon sources. Expression of the Escherichia coli ldhA gene in engineered R. eutropha strains allowed production of poly(3-hydroxybutyrate-co-lactate) [P(3HB-co-LA)] from glucose as the sole carbon source. This is the first report on the production of 2-hydroxyacid-containing PHAs by metabolically engineered R. eutropha.

  14. Polyhydroxyalkanoates production with Ralstonia eutropha from low quality waste animal fats.

    Science.gov (United States)

    Riedel, Sebastian L; Jahns, Stefan; Koenig, Steven; Bock, Martina C E; Brigham, Christopher J; Bader, Johannes; Stahl, Ulf

    2015-11-20

    Polyhydroxyalkanoates (PHAs) are biodegradable and biocompatible polyesters considered as alternatives to petroleum-based plastics. Ralstonia eutropha is a model organism for PHA production. Utilizing industrially rendered waste animal fats as inexpensive carbon feedstocks for PHA production is demonstrated here. An emulsification strategy, without any mechanical or chemical pre-treatment, was developed to increase the bioavailability of solid, poorly-consumable fats. Wild type R. eutropha strain H16 produced 79-82% (w/w) polyhydroxybutyrate (PHB) per cell dry weight (CDW) when cultivated on various fats. A productivity of 0.3g PHB/(L × h) with a total PHB production of 24 g/L was achieved using tallow as carbon source. Using a recombinant strain of R. eutropha that produces poly(hydroxybutyrate-co-hydroxyhexanoate) [P(HB-co-HHx)], 49-72% (w/w) of PHA per CDW with a HHx content of 16-27 mol% were produced in shaking flask experiments. The recombinant strain was grown on waste animal fat of the lowest quality available at lab fermenter scale, resulting in 45 g/L CDW with 60% (w/w) PHA per CDW and a productivity of 0.4 g PHA/(L × h). The final HHx content of the polymer was 19 mol%. The use of low quality waste animal fats as an inexpensive carbon feedstock exhibits a high potential to accelerate the commercialization of PHAs.

  15. Diverse protein regulations on PHA formation in Ralstonia eutropha on short chain organic acids

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    Sung-Eun Lee, Qing X. Li, Jian Yu

    2009-01-01

    Full Text Available Organic acids are considered as potential substrates for biosynthesis of polyhydroxyalkaonates. The acids may also be the metabolic inhibitors at moderate concentration levels. In this study, Ralstonia eutropha was used to elucidate the protein regulations when the bacterial cells pre-cultivated on glucose were exposed to three representative short chain organic acids, acetic, propionic and levulinic acids. The research compared and examined the proteins that might participate in PHA metabolism, primary metabolism, and cell's defense systems. A number of proteins were found to be induced in R. eutropha by using 1D-PAGE and nano-liquid chromatography tandem MS/MS. With the proteins being up-regulated, a dramatic change occurred in the induction of PHA metabolism, including fatty acid biosynthesis for acetate, β-oxidation for propionate and both for levulinic acid. Acetate kinase was induced in response to the presence of acetate or levulinic acid. The organic acids induced several proteins involved in amino acid biosynthesis, purine and pyrimidine biosynthesis, and cofactor biosynthesis in R. eutropha, but the regulations had a great variation. R. eutropha might employ different regulation mechanisms to maintain cell growth and PHA formation when the cells are exposed to the organic acids as sole source of carbon and energy.

  16. Evaluation of Resistance to Ralstonia solanacearum in Tomato Genetic Resources at Seedling Stage

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    Sang Gyu Kim

    2016-02-01

    Full Text Available Bacterial wilt of tomatoes caused by Ralstonia solanacearum is a devastating disease that limits the production of tomato in Korea. The best way to control this disease is using genetically resistant tomato plant. The resistance degree to R. solanacearum was evaluated for 285 tomato accessions conserved in the National Agrobiodiversity Center of Rural Development Administration. These accessions of tomato were originated from 23 countries. Disease severity of tomato accessions was investigated from 7 days to 14 days at an interval of 7 days after inoculation of R. solanacearum under greenhouse conditions. A total of 279 accessions of tomato germplasm were susceptible to R. solanacearum, resulting in wilt and death in 70 to 90% of these plants. Two tomato accessions were moderately resistant to R. solanacearum. Only four accessions showed high resistance against R. solanacearum. No distinct symptom of bacterial wilt appeared on the resistant tomato germplasms for up to 14 days after inoculation of R. solanacearum. Microscopy of resistant tomato stems infected with R. solanacearum revealed limited bacterial spread with thickening of pit membrane and gum production. Therefore, these four resistant tomato germplasms could be used in tomato breeding program against bacterial wilt.

  17. Evaluation of Resistance to Ralstonia solanacearum in Tomato Genetic Resources at Seedling Stage.

    Science.gov (United States)

    Kim, Sang Gyu; Hur, On-Sook; Ro, Na-Young; Ko, Ho-Cheol; Rhee, Ju-Hee; Sung, Jung Sook; Ryu, Kyoung-Yul; Lee, Sok-Young; Baek, Hyung Jin

    2016-02-01

    Bacterial wilt of tomatoes caused by Ralstonia solanacearum is a devastating disease that limits the production of tomato in Korea. The best way to control this disease is using genetically resistant tomato plant. The resistance degree to R. solanacearum was evaluated for 285 tomato accessions conserved in the National Agrobiodiversity Center of Rural Development Administration. These accessions of tomato were originated from 23 countries. Disease severity of tomato accessions was investigated from 7 days to 14 days at an interval of 7 days after inoculation of R. solanacearum under greenhouse conditions. A total of 279 accessions of tomato germplasm were susceptible to R. solanacearum, resulting in wilt and death in 70 to 90% of these plants. Two tomato accessions were moderately resistant to R. solanacearum. Only four accessions showed high resistance against R. solanacearum. No distinct symptom of bacterial wilt appeared on the resistant tomato germplasms for up to 14 days after inoculation of R. solanacearum. Microscopy of resistant tomato stems infected with R. solanacearum revealed limited bacterial spread with thickening of pit membrane and gum production. Therefore, these four resistant tomato germplasms could be used in tomato breeding program against bacterial wilt.

  18. Un compromiso compartido para la Misión contra el Cáncer

    Science.gov (United States)

    En la reunión anual de la AACR, el vicepresidente Biden habló acerca de la Iniciativa Nacional de la Misión contra el Cáncer y del papel crítico que tendrá toda la comunidad investigadora en acelerar el progreso contra el cáncer.

  19. 姬松茸60Co辐射新菌株J3营养成分与农药残留分析%Analysis on Nutrients and Pesticide Residues in Strain J3 Agaricus blazei Murill Irradiated by 60Co

    Institute of Scientific and Technical Information of China (English)

    翁伯琦; 江枝和; 肖淑霞; 雷锦桂; 王义祥; 唐翔虬

    2011-01-01

    通过常规生产床栽,对比研究姬松茸Co辐射新菌株J和原菌株J在营养品质以及重金属含量和农药残留情况.结果表明,姬松茸Co辐射新菌株J子实体中鲜味氨基酸总量(56.5 g·kg)、甜味氨基酸总量(52.4g·kg)、硫氨基酸总量(15.8 g·kg)、支链氨基酸总量(38.1 g·kg)、芳香族氨基酸总量(16.1 g·kg)、儿童氨基酸总量(17.8 g·kg)、必需氨基酸总量(95 g·kg),分别占氨基酸总量(221.7 g·kg)的25.48%、23.64%、7.13%、17.19%、7.26%、8.03%和42.85%,分别比姬松茸J高28.12%、12.93%、0%、14.41%、12.59%、16.34%和11.76%.J的多不饱和脂肪酸(76.15%)和不饱和脂肪酸(77.55%)分别比姬松茸原菌株J高4.39%和3.82%.J子实体含镉(3.86 mg·kg)、汞(0.42 mg·kg)和砷(0.09 mg·kg),也分别比原菌株J低45.86%、32.25%和18.18%;其铅含量符合国家食用菌卫生标准GB 7096-2003;砷含量符合国家绿色食品食用菌NY/T749-2003的标准.子实体中联苯菊酯、溴氰菊酯、百菌清、六六六、多菌灵、阿维菌素、甲基托布津、甲胺磷、毒死蜱、滴滴涕和二氧化硫含量均符合国家绿色食品食用菌NY/T 749-2003的标准.%A garicus blazei Murill as rare edible fungi was adored by more and more customers.But with the increasing attention of food hygiene quality, it was important guidance of the safety production of Agaricus blazei to understand the health status of Agaricus blazei in the actual cultivation.This paper studied the difference in terms of nutritional quality, heavy metal contents and pesticide residues between strain J3 and J1.The results showed that the contents of delicious amino acid(56.5 g· kg-1), sweet amino acid(52.4 g· kg-1), sulfur amino acid( 15.8 g·kg-1), branched chain amino acid(38.1 g· kg-1), aromatic amino acid( 16.1 g·kg-1), children amino acid( 17.8 g·kg-1), necessary amino acid (95.0 g·kg-1)in the fruit bodies ofAgaricus blazei J3, occupied 25.48%, 23.64%, 7.13%, 17.19%, 7.26

  20. Whole-Cell Kinetics of Trichloroethylene Degradation by Phenol Hydroxylase in a Ralstonia eutropha JMP134 Derivative

    OpenAIRE

    Ayoubi, Patricia J.; Harker, Alan R.

    1998-01-01

    The rate, progress, and limits of trichloroethylene (TCE) degradation by Ralstonia eutropha AEK301/pYK3021 whole cells were examined in the absence of aromatic induction. At TCE concentrations up to 800 μM, degradation rates were sustained until TCE was no longer detectable. The Ks and Vmax for TCE degradation by AEK301/pYK3021 whole cells were determined to be 630 μM and 22.6 nmol/min/mg of total protein, respectively. The sustained linear rates of TCE degradation by AEK301/pYK3021 up to a c...

  1. Detección de Ralstonia solanacearum en Solanum tuberosum L. en el Estado de Sonora, México

    OpenAIRE

    Ana G. Alvarado-Martínez; Edgar O. Rueda-Puente; Juan F. Ponce-Medina; Leonel Avendaño-Reyes; Jesús Santillano-Cazares; Jesús Borboa-Flores; Luis Hernández-Montiel; Ramón Holguín-Peña

    2013-01-01

    Ralstonia solanacearum (Rs) produce la enfermedad cuarentenaria denominada marchitez bacteriana en papa. México es un país importador de semilla de Estados Unidos de América y Canadá, aspecto significante para provocar una eventual introducción de esta enfermedad en áreas con amplias extensiones de papa. Sonora es una región importante en relación con la producción de este cultivo. Por lo anteriormente expuesto, se realizó la presente investigación, teniendo como objetivos: a) la ...

  2. Chemotaxis of Ralstonia eutropha JMP134(pJP4) to the Herbicide 2,4-Dichlorophenoxyacetate

    OpenAIRE

    Hawkins, Andrew C.; Harwood, Caroline S.

    2002-01-01

    Ralstonia eutropha JMP134(pJP4) and several other species of motile bacteria can degrade the herbicide 2,4-dichlorophenoxyacetate (2,4-D), but it was not known if bacteria could sense and swim towards 2,4-D by the process of chemotaxis. Wild-type R. eutropha cells were chemotactically attracted to 2,4-D in swarm plate assays and qualitative capillary assays. The chemotactic response was induced by growth with 2,4-D and depended on the presence of the catabolic plasmid pJP4, which harbors the ...

  3. Estado actual de la vacuna conjugada contra Streptococcus pneumoniae

    Directory of Open Access Journals (Sweden)

    Hernán Sierra- Fernandez

    2006-06-01

    Full Text Available Las infecciones por Streptococcus pneumoniae son frecuentes en la población pediátrica especialmente en los niños menores de 2 años. El S. pneumoniae puede producir infecciones invasoras con una alta tasa de mortalidad y morbilidad como lo son las meningitis bacterianas, la neumonía y bacteremias siendo a la vez el agente que con mayor frecuencia se detecta en el oído medio de niños con otitis media. En la actualidad existe una vacuna conjugada contra esta bacteria que protege contra los siete serotipos de S. pneumoniae más frecuentes en el mundo y que a su vez son los mismos serotipos que presentan una mayor incidencia de resistencia a los antibioticos de uso frecuente. La vacuna no solo protege contra este tipo de infecciones sino que se ha demostrado que disminuye la colonización nasofaringea de los niños que han recibido la vacuna produciendo a su vez, una reducción en el numero de infecciones, por esta bacteria, en poblaciones de personas mayores de 5 años, incluyendo adultos y personas mayores a los 65 años (efecto rebaño. Con base en los serotipos aislados en niños costarricenses con otitis media, se puede calcular que la cobertura de esta vacuna en Costa Rica sería de aproximadamente un 74% e incluyendo mayoritariamente, los serotipos que presentan resistencia antimicrobriana más frecuentemente.The heptavalent S. pneumoniae conjugate vaccine has shown to be safe and effective in preventing pediatric invasive infections and otitis media caused by S. pneumoniae. The routine use of these vaccines has dramatically reduced the incidence of invasive pneumococcal diseases in children younger than 2 years old and because of a reduction in colonization of the children’s nasopharynx, the transmission from child to adult has been reduced and the number of secondary S. pneumoniae infections in adults. Another benefit of the routine use of this vaccine has been the reduction of vaccine-type antimicrobial resistant strains. Based on

  4. Experimental evolution and gene knockout studies reveal AcrA-mediated isobutanol tolerance in Ralstonia eutropha.

    Science.gov (United States)

    Bernardi, Amanda C; Gai, Claudia S; Lu, Jingnan; Sinskey, Anthony J; Brigham, Christopher J

    2016-07-01

    Isobutanol (IBT) has attracted much attention from researchers as a next generation drop-in biofuel. Ralstonia eutropha is a gram-negative bacterium which naturally produces polyhydroxybutyrate (PHB), and has been reported to produce IBT after metabolic engineering. Similar to other microbes, R. eutropha experiences toxicity from branched-chain alcohols and is unable to grow in the presence of IBT concentrations higher than 0.5% (v v(-1)). Such low tolerance greatly limits the ability of R. eutropha to grow and produce IBT. In order to study toxicity to the cells, IBT-tolerant strains were developed by experimental evolution, revealing that two genes, previously described as being related to IBT tolerance in Escherichia coli (acrA and acrA6), also presented mutations in R. eutropha evolved strains. The effect on the physiology of the cells of in-frame deletions of each of these genes was assessed in wild type and engineered IBT-producing strains in an attempt to reproduce a tolerant phenotype. The mutant strains' ability to tolerate, consume, and produce IBT were also analyzed. Although deletions of acrA6 and acrA did not significantly improve R. eutropha growth in the presence of IBT, these deletions improved cell survival in the presence of high concentrations of IBT in the extracellular milieu. Moreover, an in-frame acrA deletion in an engineered IBT-producing R. eutropha enhanced the strain's ability to produce IBT, which could potentially be associated with enhanced survival at high IBT concentrations. PMID:26811221

  5. Metabolic engineering of Ralstonia eutropha for the production of polyhydroxyalkanoates from sucrose.

    Science.gov (United States)

    Park, Si Jae; Jang, Young-Ah; Noh, Won; Oh, Young Hoon; Lee, Hyuk; David, Yokimiko; Baylon, Mary Grace; Shin, Jihoon; Yang, Jung Eun; Choi, So Young; Lee, Seung Hwan; Lee, Sang Yup

    2015-03-01

    A sucrose utilization pathway was established in Ralstonia eutropha NCIMB11599 and R. eutropha 437-540 by introducing the Mannheimia succiniciproducens MBEL55E sacC gene that encodes β-fructofuranosidase. These engineered strains were examined for the production of poly(3-hydroxybutyrate) [P(3HB)] and poly(3-hydroxybutyrate-co-lactate) [P(3HB-co-LA)], respectively, from sucrose as a carbon source. It was found that β-fructofuranosidase excreted into the culture medium could hydrolyze sucrose to glucose and fructose, which were efficiently used as carbon sources by recombinant R. eutropha strains. When R. eutropha NCIMB11599 expressing the sacC gene was cultured in nitrogen-free chemically defined medium containing 20 g/L of sucrose, a high P(3HB) content of 73.2 wt% could be obtained. In addition, R. eutropha 437-540 expressing the Pseudomonas sp. MBEL 6-19 phaC1437 gene and the Clostridium propionicum pct540 gene accumulated P(3HB-co-21.5 mol% LA) to a polymer content of 19.5 wt% from sucrose by the expression of the sacC gene and the Escherichia coli ldhA gene. The molecular weights of P(3HB) and P(3HB-co-21.5 mol%LA) synthesized in R. eutropha using sucrose as a carbon source were 3.52 × 10(5) (Mn ) and 2.19 × 10(4) (Mn ), respectively. The engineered R. eutropha strains reported here will be useful for the production of polyhydroxyalkanoates (PHAs) from sucrose, one of the most abundant and relatively inexpensive carbon sources.

  6. The Ralstonia solanacearum pathogenicity regulator HrpB induces 3-hydroxy-oxindole synthesis.

    Science.gov (United States)

    Delaspre, Fabien; Nieto Peñalver, Carlos G; Saurel, Olivier; Kiefer, Patrick; Gras, Emmanuel; Milon, Alain; Boucher, Christian; Genin, Stéphane; Vorholt, Julia A

    2007-10-01

    The transcriptional activator HrpB of the bacterial wilt causing betaproteobacterium Ralstonia solanacearum represents a key regulator for pathogenicity. In particular, it drives expression of hrp genes encoding a type III secretion system (T3SS) as well as effector molecules for delivery into the host cytosol to promote disease. However, the HrpB regulon extends beyond this T3SS. We describe here an HrpB-activated operon of six genes that is responsible for the synthesis of a fluorescent isatin derivative of 149 Amu that we named HDF for HrpB-dependent factor and that we purified from culture supernatants. The structure of the labile molecule was solved by using NMR and CD spectroscopy to be (3S)-3-hydroxy-indolin-2-one and confirmed by its chemical synthesis and MS spectrometry. HDF was found to be present at 20 nM in wild-type cultures grown on minimal medium, and its synthesis increased 15-fold upon overproduction of HrpB, confirming that HrpB activates HDF synthesis. The addition of tryptophan significantly stimulated HDF biosynthesis and was shown to represent the precursor molecule for HDF synthesis. A search for the biological function of the molecule revealed that HDF induces acyl-homoserine lactone receptor-mediated reporter activity of the well studied LuxR transcriptional regulator of Vibrio fischeri. Thus, our results provide evidence that the specificity of acyl-homoserine lactone (acyl-HSL) receptors is clearly broader than previously considered. The failure to detect induction by HDF of the described endogenous quorum-sensing circuits of the pathogen points to a role in interfering with cell-cell signaling of rivalling bacteria. PMID:17890323

  7. Genetic Determinants for Pyomelanin Production and Its Protective Effect against Oxidative Stress in Ralstonia solanacearum.

    Science.gov (United States)

    Ahmad, Shabir; Lee, Seung Yeup; Kong, Hyun Gi; Jo, Eun Jeong; Choi, Hye Kyung; Khan, Raees; Lee, Seon-Woo

    2016-01-01

    Ralstonia solanacearum is a soil-borne plant pathogen that infects more than 200 plant species. Its broad host range and long-term survival under different environmental stress conditions suggest that it uses a variety of mechanisms to protect itself against various types of biotic and abiotic stress. R. solanacearum produces a melanin-like brown pigment in the stationary phase when grown in minimal medium containing tyrosine. To gain deeper insight into the genetic determinants involved in melanin production, transposon-inserted mutants of R. solanacearum strain SL341 were screened for strains with defective melanin-producing capability. In addition to one mutant already known to be involved in pyomelanin production (viz., strain SL341D, with disruption of the hydroxphenylpyruvate dioxygenase gene), we identified three other mutants with disruption in the regulatory genes rpoS, hrpG, and oxyR, respectively. Wild-type SL341 produced pyomelanin in minimal medium containing tyrosine whereas the mutant strains did not. Likewise, homogentisate, a major precursor of pyomelanin, was detected in the culture filtrate of the wild-type strain but not in those of the mutant strains. A gene encoding hydroxyphenylpyruvate dioxygenase exhibited a significant high expression in wild type SL341 compared to other mutant strains, suggesting that pyomelanin production is regulated by three different regulatory proteins. However, analysis of the gene encoding homogentisate dioxygenase revealed no significant difference in its relative expression over time in the wild-type SL341 and mutant strains, except for SL341D, at 72 h incubation. The pigmented SL341 strain also exhibited a high tolerance to hydrogen peroxide stress compared with the non-pigmented SL341D strain. Our study suggests that pyomelanin production is controlled by several regulatory factors in R. solanacearum to confer protection under oxidative stress. PMID:27513990

  8. A duplex PCR assay for the detection of Ralstonia solanacearum phylotype II strains in Musa spp.

    Directory of Open Access Journals (Sweden)

    Gilles Cellier

    Full Text Available Banana wilt outbreaks that are attributable to Moko disease-causing strains of the pathogen Ralstonia solanacearum (Rs remain a social and economic burden for both multinational corporations and subsistence farmers. All known Moko strains belong to the phylotype II lineage, which has been previously recognized for its broad genetic basis. Moko strains are paraphyletic and are distributed among seven related but distinct phylogenetic clusters (sequevars that are potentially major threats to Musaceae, Solanaceae, and ornamental crops in many countries. Although clustered within the Moko IIB-4 sequevar, strains of the epidemiologically variant IIB-4NPB do not cause wilt on Cavendish or plantain bananas; instead, they establish a latent infection in the vascular tissues of plantains and demonstrate an expanded host range and high aggressiveness toward Solanaceae and Cucurbitaceae. Although most molecular diagnostic methods focus on strains that wilt Solanaceae (particularly potato, no relevant protocol has been described that universally detects strains of the Musaceae-infecting Rs phylotype II. Thus, a duplex PCR assay targeting Moko and IIB-4NPB variant strains was developed, and its performance was assessed using an extensive collection of 111 strains representing the known diversity of Rs Moko-related strains and IIB-4NPB variant strains along with certain related strains and families. The proposed diagnostic protocol demonstrated both high accuracy (inclusivity and exclusivity and high repeatability, detected targets on either pure culture or spiked plant extracts. Although they did not belong to the Moko clusters described at the time of the study, recently discovered banana-infecting strains from Brazil were also detected. According to our comprehensive evaluation, this duplex PCR assay appears suitable for both research and diagnostic laboratories and provides reliable detection of phylotype II Rs strains that infect Musaceae.

  9. Comparative Transcriptome Analysis Reveals Cool Virulence Factors of Ralstonia solanacearum Race 3 Biovar 2.

    Directory of Open Access Journals (Sweden)

    Fanhong Meng

    Full Text Available While most strains of the plant pathogenic bacterium Ralstonia solanacearum are tropical, the race 3 biovar 2 (R3bv2 subgroup attacks plants in cooler climates. To identify mechanisms underlying this trait, we compared the transcriptional profiles of R. solanacearum R3bv2 strain UW551 and tropical strain GMI1000 at 20°C and 28°C, both in culture and during tomato pathogenesis. 4.2% of the ORFs in the UW551 genome and 7.9% of the GMI1000 ORFs were differentially expressed by temperature in planta. The two strains had distinct transcriptional responses to temperature change. GMI1000 up-regulated several stress response genes at 20°C, apparently struggling to cope with plant defenses. At the cooler temperature, R3bv2 strain UW551 up-regulated a cluster encoding a mannose-fucose binding lectin, LecM; a quorum sensing-dependent protein, AidA; and a related hypothetical protein, AidC. The last two genes are absent from the GMI1000 genome. In UW551, all three genes were positively regulated by the adjacent SolI/R quorum sensing system. These temperature-responsive genes were required for full virulence in R3bv2. Mutants lacking lecM, aidA, or aidC were each significantly more reduced in virulence on tomato at 20°C than at 28°C in both a naturalistic soil soak inoculation assay and when they were inoculated directly into tomato stems. The lecM and aidC mutants also survived poorly in potato tubers at the seed tuber storage temperature of 4°C, and the lecM mutant was defective in biofilm formation in vitro. Together, these results suggest novel mechanisms, including a lectin, are involved in the unique temperate epidemiology of R3bv2.

  10. Ralstonia solanacearum strains from Martinique (French West Indies) exhibiting a new pathogenic potential.

    Science.gov (United States)

    Wicker, Emmanuel; Grassart, Laurence; Coranson-Beaudu, Régine; Mian, Danièle; Guilbaud, Caroline; Fegan, Mark; Prior, Philippe

    2007-11-01

    We investigated a destructive pathogenic variant of the plant pathogen Ralstonia solanacearum that was consistently isolated in Martinique (French West Indies). Since the 1960s, bacterial wilt of solanaceous crops in Martinique has been caused primarily by strains of R. solanacearum that belong to either phylotype I or phylotype II. Since 1999, anthurium shade houses have been dramatically affected by uncharacterized phylotype II strains that also affected a wide range of species, such as Heliconia caribea, cucurbitaceous crops, and weeds. From 1989 to 2003, a total of 224 R. solanacearum isolates were collected and compared to 6 strains isolated in Martinique in the 1980s. The genetic diversity and phylogenetic position of selected strains from Martinique were assessed (multiplex PCRs, mutS and egl DNA sequence analysis) and compared to the genetic diversity and phylogenetic position of 32 reference strains covering the known diversity within the R. solanacearum species complex. Twenty-four representative isolates were tested for pathogenicity to Musa species (banana) and tomato, eggplant, and sweet pepper. Based upon both PCR and sequence analysis, 119 Martinique isolates from anthurium, members of the family Cucurbitaceae, Heliconia, and tomato, were determined to belong to a group termed phylotype II/sequevar 4 (II/4). While these strains cluster with the Moko disease-causing strains, they were not pathogenic to banana (NPB). The strains belonging to phylotype II/4NPB were highly pathogenic to tomato, eggplant, and pepper, were able to wilt the resistant tomato variety Hawaii7996, and may latently infect cooking banana. Phylotype II/4NPB constitutes a new pathogenic variant of R. solanacearum that has recently appeared in Martinique and may be latently prevalent throughout Caribbean and Central/South America.

  11. Ralstonia solanacearum strains from Martinique (French West Indies) exhibiting a new pathogenic potential.

    Science.gov (United States)

    Wicker, Emmanuel; Grassart, Laurence; Coranson-Beaudu, Régine; Mian, Danièle; Guilbaud, Caroline; Fegan, Mark; Prior, Philippe

    2007-11-01

    We investigated a destructive pathogenic variant of the plant pathogen Ralstonia solanacearum that was consistently isolated in Martinique (French West Indies). Since the 1960s, bacterial wilt of solanaceous crops in Martinique has been caused primarily by strains of R. solanacearum that belong to either phylotype I or phylotype II. Since 1999, anthurium shade houses have been dramatically affected by uncharacterized phylotype II strains that also affected a wide range of species, such as Heliconia caribea, cucurbitaceous crops, and weeds. From 1989 to 2003, a total of 224 R. solanacearum isolates were collected and compared to 6 strains isolated in Martinique in the 1980s. The genetic diversity and phylogenetic position of selected strains from Martinique were assessed (multiplex PCRs, mutS and egl DNA sequence analysis) and compared to the genetic diversity and phylogenetic position of 32 reference strains covering the known diversity within the R. solanacearum species complex. Twenty-four representative isolates were tested for pathogenicity to Musa species (banana) and tomato, eggplant, and sweet pepper. Based upon both PCR and sequence analysis, 119 Martinique isolates from anthurium, members of the family Cucurbitaceae, Heliconia, and tomato, were determined to belong to a group termed phylotype II/sequevar 4 (II/4). While these strains cluster with the Moko disease-causing strains, they were not pathogenic to banana (NPB). The strains belonging to phylotype II/4NPB were highly pathogenic to tomato, eggplant, and pepper, were able to wilt the resistant tomato variety Hawaii7996, and may latently infect cooking banana. Phylotype II/4NPB constitutes a new pathogenic variant of R. solanacearum that has recently appeared in Martinique and may be latently prevalent throughout Caribbean and Central/South America. PMID:17720825

  12. Enhancement of glycerol utilization ability of Ralstonia eutropha H16 for production of polyhydroxyalkanoates.

    Science.gov (United States)

    Fukui, Toshiaki; Mukoyama, Masaharu; Orita, Izumi; Nakamura, Satoshi

    2014-09-01

    Ralstonia eutropha H16 is a well-studied bacterium with respect to biosynthesis of polyhydroxyalkanoates (PHAs), which has attracted attentions as biodegradable bio-based plastics. However, this strain shows quite poor growth on glycerol of which bulk supply has been increasing as a major by-product of biodiesel industries. This study examined enhancement of glycerol assimilation ability of R. eutropha H16 by introduction of the genes of aquaglyceroporin (glpF) and glycerol kinase (glpK) from Escherichia coli. Although introduction of glpFK Ec into the strain H16 using a multi-copy vector was not successful, a recombinant strain possessing glpFK Ec within the chromosome showed much faster growth on glycerol than H16. Further analyses clarified that weak expression of glpK Ec alone allowed to establish efficient glycerol assimilation pathway, indicating that the poor growth of H16 on glycerol was caused by insufficient kination activity to glycerol, as well as this strain had a potential ability for uptake of extracellular glycerol. The engineered strains expressing glpFK Ec or glpK Ec produced large amounts of poly[(R)-3-hydroxybutyrate] [P(3HB)] from glycerol with much higher productivity than H16. Unlike other glycerol-utilizable wild strains of R. eutropha, the H16-derived engineered strains accumulated P(3HB) with no significant decrease in molecular weights on glycerol, and the polydispersity index of the glycerol-based P(3HB) synthesized by the strains expressing glpFK Ec was lower than those by the parent strains. The present study demonstrated possibility of R. eutropha H16-based platform for production of useful compounds from inexpensive glycerol.

  13. Epidemia da Ralstonia Pickettii associata a catetere venoso centrale in pazienti oncologici

    Directory of Open Access Journals (Sweden)

    L. Sommella

    2003-05-01

    Full Text Available

    Obiettivi: la Ralstonia pickettii (RP è un microrganismo Gram-negativo, aerobio, in grado di contaminare soluzioni saline e disinfettanti. Sebbene sia scarsamente patogeno, è responsabile di infezioni nosocomiali soprattutto in pazienti (pts immunodepressi. In questo studio viene descritta un’epidemia da RP in pts oncologici per contaminazione di port-a-cath (PAC da soluzione eparinata.

    Metodi: dal 31 ottobre 2002, RP è stata isolata da sangue periferico e da PAC in alcuni pts oncologici che avevano presentato febbre con brivido pochi minuti dopo l’utilizzo del PAC per infusione di agenti chemioterapici o di soluzioni eparinizzate. Prelievi emocolturali venivano estesi a tutti i pts che manifestavano la stessa sintomatologia ed effettuati anche prelievi colturali su soluzioni fisiologiche eparinizzate (500 U/ml.

    Risultati: dal 31 ottobre al 27 novembre 2002 RP è
    stata isolata da emocolture di 16 su 22 pts esaminati. In tutti i pazienti veniva praticata una terapia antibiotica mirata e pianificata la rimozione del PAC con conseguente risoluzione del quadro clinico. RP è stata anche isolata in una soluzione fisiologica eparinizzata con una fiala di un lotto contaminato.

    Conclusioni: questo studio relativo ad un’infezione causata da RP in pts oncologici portatori di PAC suggerisce che l’identificazione tempestiva di un patogeno nosocomiale inusuale è cruciale per impostare una corretta valutazione epidemiologica al fine di individuare e rimuovere le cause che hanno provocato l’epidemia.

  14. Batallas contra la lepra: estado, medicina y ciencia en Colombia

    Directory of Open Access Journals (Sweden)

    Néstor Miranda Canal

    2010-08-01

    Full Text Available Diana Obregón Torres. Batallas contra la lepra: Estado, medicina y ciencia en Colombia, Medellín: Banco de la República / EAFIT, 2002, pp. 436. La historia de las ciencias y de la medicina en Colombia tiene sus orígenes en dos obras que aparecen en el siglo XIX: la Memoria sobre el estudio de la batán/ca en la Nueva Granada de Florentino Vezga (incluida en el primer número del Boletín de la Sociedad de Naturalistas Neogranadinos, en 1860 y las Memorias para la historia de la medicina en Santafé de Bogotá de Pedro María Ibáñez (publicada por la Imprenta de Vapor de Zalamea Hermanos, en 1884.

  15. Performance of the contra-rotating Wells turbine

    Energy Technology Data Exchange (ETDEWEB)

    Gato, L.M.C. [Univ. Tecnica de Lisboa, Lisbon (Portugal). Inst. Superior Tecnico; Curran, R. [Queen`s Univ., Belfast (United Kingdom). Dept. of Aeronautical Engineering

    1995-12-31

    The paper describes experimental investigation of the contra-rotating Well`s turbine for a wave power plant. The tests were conducted in unidirectional steady air flow rig. Measurements taken included the overall performance of the turbine as well as detailed measurements of the radial distribution of velocity and pressure, upstream, downstream and between the rotor planes, for two different solidity turbine models and different rotor speed ratios. Experimental results show that the use of two twin rotors rotating in the opposite direction to each other is an efficient means of recovering the swirl kinetic energy without the use of guide vanes. Also, it was shown that the stall could be postponed by increasing the velocity of the downstream rotor relative to that of the upstream rotor.

  16. Violencia contra sindicalistas en medio del conflicto armado colombiano

    Directory of Open Access Journals (Sweden)

    Camilo Echandía Castilla

    2013-12-01

    Full Text Available El estudio de la violencia contra sindicalistas en medio del conflicto armado colombiano pone al descubierto el carácter selectivo y sistemático de una violencia deliberada que busca debilitar, neutralizar, desarticular o cooptar a las organizaciones sociales, reducir su capacidad de presión y acallar sus reivindicaciones. Los homicidios de sindicalistas se han reducido en los últimos años debido a la desmovilización de parte del componente de las autodefensas y al repliegue de las guerrillas, y a su salida de zonas que disputaban con los paramilitares. Las bandas criminales también asesinan sindicalistas, pero en menor número.

  17. Tratamiento contra la rabia humana: un poco de su historia

    Directory of Open Access Journals (Sweden)

    Maria Cristina Schneider

    1994-12-01

    Full Text Available El presente trabajo es una revisión histórica del tratamiento utilizado contra la rabia humana, desde la antigüedad hasta el momento actual. Pretende hacer una analogía entre el concepto de causa predominante en la época y el tipo de tratamiento utilizado. Los griegos antiguos tenían la diosa Artemisa como sanadora de la rabia y ya utilizaban la cauterización de la herida. Los pueblos del siglo I conocían la capacidad infecciosa en la saliva de perros rabiosos, llamando a ese material de veneno virus (en latín. En la Edad Media, cuando prevalecía un concepto mágico y religioso de la salud, el gran protector era San Humberto. Con el Renacimiento surgen nuevamente muchos experimentos y avances en el conocimiento de la enfermedad, que sentaron las bases para los importantes hallazgos en el futuro próximo. En esa época predominaba la teoría miasmática y del contagio. Pasteur fue un grande opositor de la espontaneidad de la rabia. A finales del siglo XIX, con los descubrimientos microbianos, Pasteur hizo la gran revolución científica en relación al tratamiento contra la rabia, que es la vacuna. Las vacunas pueden actualmente ser de tipo nervioso o no, variando también el numero de dosis recomendadas. Se han desarrollado muchos estudios sobre vacunas, siendo la más utilizada en América Latina del tipo Fuenzalida y Palacios, y la recomendada actualmente por la OMS es la de cultivo celular.

  18. Tratamiento contra la rabia humana: un poco de su historia

    Directory of Open Access Journals (Sweden)

    Schneider Maria Cristina

    1994-01-01

    Full Text Available El presente trabajo es una revisión histórica del tratamiento utilizado contra la rabia humana, desde la antigüedad hasta el momento actual. Pretende hacer una analogía entre el concepto de causa predominante en la época y el tipo de tratamiento utilizado. Los griegos antiguos tenían la diosa Artemisa como sanadora de la rabia y ya utilizaban la cauterización de la herida. Los pueblos del siglo I conocían la capacidad infecciosa en la saliva de perros rabiosos, llamando a ese material de veneno virus (en latín. En la Edad Media, cuando prevalecía un concepto mágico y religioso de la salud, el gran protector era San Humberto. Con el Renacimiento surgen nuevamente muchos experimentos y avances en el conocimiento de la enfermedad, que sentaron las bases para los importantes hallazgos en el futuro próximo. En esa época predominaba la teoría miasmática y del contagio. Pasteur fue un grande opositor de la espontaneidad de la rabia. A finales del siglo XIX, con los descubrimientos microbianos, Pasteur hizo la gran revolución científica en relación al tratamiento contra la rabia, que es la vacuna. Las vacunas pueden actualmente ser de tipo nervioso o no, variando también el numero de dosis recomendadas. Se han desarrollado muchos estudios sobre vacunas, siendo la más utilizada en América Latina del tipo Fuenzalida y Palacios, y la recomendada actualmente por la OMS es la de cultivo celular.

  19. Inventorying the molecular potential of Cupriavidus and Ralstonia strains surviving harsh space-related environments

    Science.gov (United States)

    Mijnendonckx, Kristel; van Houdt, Rob; Provoost, Ann; Bossus, Albert; Ott, C. Mark; Venkateswaran, Kasthuri; Leys, Natalie

    The craving of modern man to explore life beyond earth presents a lot of challenges. The control of microbial contamination of the confined manned spacecraft is an important aspect that has to be taken into account in this journey. Because the human body contains a huge amount of microorganisms, the crew itself is the most important contamination source. But contamination can also originate from residing environmental microorganisms or from materials that are supplied from the Earth. These microbial contaminations can cause problems for the astronauts -well documented to have a decreased immunity -and the infrastructure of the space station. In this study, 14 different Cupriavidus metallidurans and Ralstonia pickettii strains, isolated from such space-related environments, where characterised in detail. These unique strains were isolated from drinking water that returned from ISS (3), from the cooling water system of the American ISS segment (4), from a swab sample of the Mars Odyssey Orbitor surface prior to flight (4), and from an air sample taken in the space assembly facility PHSF during Mars exploration Rover assembly (3). Their resistance to heavy metals and antibiotics was screened. The C. metallidurans isolates were more resistant to Zn2+ and Hg+ but more sensitive to Ni2+ than the R. pickettii strains. The MIC values for Cu2+ ranged from 1,5mM to 12mM, for Co2+ from 1,58mM to 12,63mM and for Cd2+ from 0,25mM to 1mM. For Ni2+ , the MIC values were between 2 and 8mM, except for the strain C. metallidurans IV (0502478) that was able to grow on Ni+2 concentrations up to 48mM. A metal of special interest was Ag+ because it is used to sanitize ISS drinking water. The strains isolated from air and surface samples showed a MIC value ranging from 0,35µM to 4µM. The isolates from the water samples had MIC values from 0,3µM to 2µM, which is lower than (or comparable with) the lowest limit of the silver concentration used in the ISS (1,9µM -4,6µM). However, all

  20. Performance and Internal Flow of Sirocco Fan Using Contra-Rotating Rotors

    Institute of Scientific and Technical Information of China (English)

    J. Fukutomi; T.Shigemitsu; T. Yasunobu

    2008-01-01

    A sirocco fan using contra-rotating rotors in which an inner rotor is settled inside the sirocco fan rotor end each rotor rotates in an opposite direction was proposed for the purpose of getting the higher pressure and making the structure of a sirocco fan more compact. If the high discharge pressure is obtained with the adoption of the contra-rotating rotors, it could be used for various purposes. Pressure coefficient of a sirocco fan with contra-rotating rotors is 2.5 times as high as the conventional sirocco fan and the maximum efficiency point of contra-rotating rotors shifts to larger flow rate than a conventional sirocco fan. On the other hand, it was clarified from the flow measurement results that circumferential velocity component at the outlet of the outer rotor of contra-rotating rotors becomes larger than a conventional one. In the present paper, the performance of a conventional sirocco fan and a sirocco fan with contra-rotating rotors are shown and the internal flow field at the outlet of outer rotor of both cases is clarified. Then, the effect of different kind of contra-rotating rotors on the performance and internal flow field is investigated and the rotor design with higher performanco would be discussed.

  1. A computer program for fast and easy typing of partial endoglucanase gene sequence into phylotypes and sequevars 1&2 (select agents) of Ralstonia solanacearum

    Science.gov (United States)

    The phytopathogen Ralstonia solanacearum is a species complex that contains a subset of strains that are quarantined or select agent pathogens. An unidentified R. solanacearum strain is considered a select agent in the US until proven otherwise, which can be done by phylogenetic analysis of a partia...

  2. Ralstonia (Pseudomonas) solanacearum race 3 (biovar 2) in surface water and natural weed hosts: First report on stinging nettle (Urtica dioica)

    NARCIS (Netherlands)

    Wenneker, M.; Verdel, M.S.W.; Groeneveld, R.M.W.; Kempenaar, C.; Beuningen, van A.R.; Janse, J.D.

    1999-01-01

    The population dynamics of the brown rot bacterium Ralstonia (Pseudomonas) solanacearum in surface water of two selected water-areas were monitored over a two-year period. In some cases during summer, high bacterial numbers (up to 106 cfu l−1) were observed. In a host plant survey a few plants of st

  3. Ralstonia solanacearum ¿PGI-1 Strain KZR-5 Is Affected in Growth, Response to Cold Stress and Invasion of Tomato

    NARCIS (Netherlands)

    Stevens, P.; Overbeek, van L.S.; Elsas, van J.D.

    2011-01-01

    The survival and persistence of Ralstonia solanacearum biovar 2 in temperate climates is still poorly understood. To assess whether genomic variants of the organism show adaptation to local conditions, we compared the behaviour of environmental strain KZR-5, which underwent a deletion of the 17.6 kb

  4. Nutrient optimization of polyhydroxyalkanoate production from palm oil fiber by Ralstonia eutropha TISTR 1095 using response surface methodology

    Directory of Open Access Journals (Sweden)

    Piyarat Boonsawang

    2010-03-01

    Full Text Available Polyhydroxyalkanoate (PHA is polyesters formed in several bacteria as a carbon or energy storage under some nutrientlimitation. Ralstonia eutropha has potential to produce PHA from various substrates, including carboxylic acids. In this research,the nutrient optimum to produce PHA from carboxylic acid was studied by using response surface methodology. Thecarboxylic acids were produced by anaerobic palm oil fiber fermentation for 7 days. Then Ralstonia eutropha TISTR 1095was cultured in fermented broth containing 840 mg/l of acids. The interaction of two factors at the same time was investigated.The effects of propionic acid, butyric acid, (NH42SO4 and K2HPO4 addition were examined. The result showed that the nutrient optimum for PHA production was fermented broth with nutrient addition (2.50 g/l propionic acid, 6.53 g/l butyric acid,1.53 g/l, (NH42SO4 and 0.03 g/l K2HPO4. The cell concentration, PHA concentration, and PHA content were 1.53 g/l, 0.70 g/l and 46.5%, respectively

  5. "Intelligent" descriptions of microbial kinetics in finitely dispersed bioreactors: neural and cybernetic models for PHB biosynthesis by Ralstonia eutropha

    Directory of Open Access Journals (Sweden)

    Patnaik Pratap R

    2007-08-01

    Full Text Available Abstract Background For many microbial processes, the complexity of the metabolisms and the responses to transient and realistic conditions are difficult to capture in mechanistic models. The cells seem to have an innate intelligence that enables them to respond optimally to environmental changes. Some "intelligent" models have therefore been proposed and compared with a mechanistic model for fed-batch cultures of Ralstonia eutropha. Results Two kinds of models have been proposed to describe such cellular behavior. Cybernetic models are derived through postulates of cellular intelligence and memory, and neural models use artificial intelligence through neural networks. Some competing models of both kinds have been compared for their ability to portray and optimize the synthesis of poly-β-hydroxybutyrate by Ralstonia eutropha in fed-batch cultures with finite dispersion. Neural models enabled the formation of more of the polymer than cybernetic models, with lesser utilization of the carbon and nitrogen substrates. Both types of models were decidedly superior to a mechanistic model used as a reference, thus supporting the value of intelligent descriptions of microbial kinetics in incompletely dispersed bioreactors. Conclusion Neural and cybernetic models describe and optimize unsteady state fed-batch microbial reactors with finite dispersion more effectively than mechanistic models. However, these "intelligent" models too have weaknesses, and hence a hybrid approach combining such models with some mechanistic features is suggested.

  6. 姬松茸粗多糖对K562细胞增殖、凋亡的影响及其作用机制探讨%Explore of the effects of Agaricus blazei polysaccharide on proliferation and apoptosis of cells K562 and its mechanism

    Institute of Scientific and Technical Information of China (English)

    林祥伟; 张苏伟

    2015-01-01

    目的:研究姬松茸粗多糖在K562细胞的增殖、凋亡,以及对转录因子NF-κB的影响,并探究其中的作用机制。方法培养K562细胞,再分别将(2、5、10mg/mL)姬松茸粗多糖加入其中作用48h,之后应用流式细胞术、免疫荧光法等方法观察姬松茸粗多糖在K562细胞的增殖、凋亡和对NF-κB活性中的影响。结果姬松茸粗多糖对K562细胞增殖有很显著的抑制作用,还可以阻止细胞从G0/G1期到G2/M+S期过渡。经过10mg/mL的姬松茸粗多糖诱导48h后,K562细胞CML细胞的凋亡率65.41%,较对照组显著增加,差异有统计学意义(P<0.01)。而且NF-κB较对照组减少。结论姬松茸粗多糖能抑制K562细胞增殖,并且可以诱导其凋亡,其中的作用机制和NF-κB通道的异常激活明显相关,值得进一步的研究。%Objective To study the influence of Agaricus blazei on proliferation and apoptosis of cells K562 and transcription NF- κB, and to explore the mechanism.Methods Cells K562 were cultured, then the 2, 5,10mg/mL of Agaricus blazei polysaccharides were respectively added to react for 48 hours, and then the effects of Agaricus blazei on proliferation and apoptosis of cells K562 and activity of NF- κB were observed with the methods such as flow cytometry, immunofluorescence.Results Agaricus blazei significantly inhibited the proliferation of cells K562, and also could prevent the cell transition from phase G0/G1 to phase G2/M+S. After induction by 10mg/mL of Agaricus blazei for 48 hours, apoptosis rate of cells K562 was 65.41%, which was significantly higher than that in control groups, and the differences were statistically significant (P<0.01). However there were fewer factors of NF-κB than the control groups.Conclusion Agaricus blazei can inhibit the proliferation of cells K562, and can induce apoptosis of them, the mechanism of that is obviously related with abnormal activation of channel of factors NF- κ

  7. Immunomodulatory Effects of the Agaricus blazei Murrill-Based Mushroom Extract AndoSan in Patients with Multiple Myeloma Undergoing High Dose Chemotherapy and Autologous Stem Cell Transplantation: A Randomized, Double Blinded Clinical Study

    Directory of Open Access Journals (Sweden)

    Jon-Magnus Tangen

    2015-01-01

    Full Text Available Forty patients with multiple myeloma scheduled to undergo high dose chemotherapy with autologous stem cell support were randomized in a double blinded fashion to receive adjuvant treatment with the mushroom extract AndoSan, containing 82% of Agaricus blazei Murrill (19 patients or placebo (21 patients. Intake of the study product started on the day of stem cell mobilizing chemotherapy and continued until the end of aplasia after high dose chemotherapy, a period of about seven weeks. Thirty-three patients were evaluable for all study endpoints, while all 40 included patients were evaluable for survival endpoints. In the leukapheresis product harvested after stem cell mobilisation, increased percentages of Treg cells and plasmacytoid dendritic cells were found in patients receiving AndoSan. Also, in this group, a significant increase of serum levels of IL-1ra, IL-5, and IL-7 at the end of treatment was found. Whole genome microarray showed increased expression of immunoglobulin genes, Killer Immunoglobulin Receptor (KIR genes, and HLA genes in the Agaricus group. Furthermore, AndoSan displayed a concentration dependent antiproliferative effect on mouse myeloma cells in vitro. There were no statistically significant differences in treatment response, overall survival, and time to new treatment. The study was registered with Clinicaltrials.gov NCT00970021.

  8. Prevención contra las drogas Prevention against drugs

    Directory of Open Access Journals (Sweden)

    Luis Jiménez Herrera

    2010-12-01

    Full Text Available Objetivo: Explorar de manera general algunos aspectos relacionados al tema de la prevención contra las drogas. Metodología: Identificación y revisión de artículos de las bases de datos: EBRARY, E-Libro, EBSCO, ProQuest, Science Direct y Springer Link, con la intención de organizar la información encontrada en las secciones siguientes: contexto general, factores involucrados en el uso y abuso de las drogas, acciones - políticas - prevención contra las drogas y hacia dónde va la investigación. Resultados: Aunque existe una variedad de conceptos relacionados con las drogas, algunos de ellos siguen en discusión dados los múltiples factores involucrados en el proceso. En los últimos años han ocurrido pocos cambios en la oferta y la demanda, pero el consumo entre hombres y mujeres tiende a igualarse, mientras el consumo inicia a edades más tempranas. Se sabe que existen factores protectores y de riesgo que median el uso, abuso y dependencia de las drogas, pero los jóvenes representan el grupo más vulnerable a los efectos de las drogas. Se realizan esfuerzos en muchos sectores pero de una manera no homogénea ni armónica y aunque ha habido esfuerzos por lograr prevención, en especial en el escenario educativo, hay factores que dificultan esta labor. Se evidencia la necesidad de contar con más investigación que permita orientar las distintas acciones para sopesar los efectos dentro del complejo mundo de las drogas Conclusión: Ante el complejo fenómeno de las drogas, se requiere conocer los distintos componentes involucrados para que puedan ser abordados de manera integral. La revisión permitió realizar un acercamiento al tema de prevención contra las drogas.Objective: To explore of general way some aspects related to the subject of the prevention against drugs. Methodology: Identification and article revision of the data bases: EBRARY, E-Libro, EBSCO, ProQuest, Science Direct and Springer Link, with the intention to organize

  9. Una aproximación al concepto de crímenes contra la humanidad

    Directory of Open Access Journals (Sweden)

    José Manuel Díaz Soto

    2012-12-01

    Full Text Available El presente artículo explora el concepto de “crímenes contra la humanidad”, a partir de una revisión histórica y del análisis de los distintos instrumentos internacionales que han consagrado esta categoría normativa. De igual modo, pretende ilustrar al lector acerca de la teoría de los crímenes contra la humanidad formulada por el profesor de la Universidad de Georgetown David J. Luban, para quien el rasgo definidor de estos delitos es que atentan contra la naturaleza política del ser humano. Por último, se destaca la influencia del pensamiento de Luban en la reciente jurisprudencia de la Corte Suprema de Justicia de Colombia acerca de los crímenes contra la humanidad.

  10. Peccatum contra sextum Pärnu maakohtus 1740. aastatel / Mati Laur

    Index Scriptorium Estoniae

    Laur, Mati, 1955-

    2008-01-01

    Tervikuna ilmunud: Laur, Mati. Peccatum contra sextum vor dem Pernauer Landgericht in den 1740er Jahren // Forschungen zur baltischen Geschichte. 3/2008. Tartu, 2008, lk. 132-150. - (Humaniora: historica). - Bibl. joonealustes märkustes

  11. Uso de polímeros em formulações para preservação de Pectobacterium atrosepticum e Ralstonia solanacearum Formulation with polymers for the Pectobacterium atrosepticum e Ralstonia solanacearum

    Directory of Open Access Journals (Sweden)

    Andréia Iraci Tumelero

    2008-02-01

    Full Text Available A sobrevivência de Pectobacterium atrosepticum e de Ralstonia solanacearum foi avaliada em veículo à base de goma xantana (GX, um polímero biológico, e de goma xantana acrescida de polivinilpirrolidona (PVP, um polímero sintético. As culturas, após crescimento até 10(11 ufc mL-1 foram injetadas junto a essas formulações e a sobrevivência avaliada em diferentes condições de armazenamento: em temperatura ambiente, em refrigerador (4ºC e em freezer (-20ºC, por 36 meses. A concentração de células viáveis foi realizada através de diluições seriadas. A patogenicidade foi avaliada em plantas hospedeiras e em iscas. Os resultados permitem observar que a concentração de células viáveis decresceu ao longo do tempo, mantendo-se entre 10³ e 10(4 ufc mL-1 ao final de três anos, exceto para a formulação à base de GX e armazenamento à -20°C, que se mostrou ineficiente para ambas as bactérias. Conclui-se, que os polímeros avaliados mostraram-se eficientes em preservar e manter as características bioquímicas e fisiológicas das bactérias Pectobacterium atrosepticum e de Ralstonia solanacearum.The survival of Pectobacterium atrosepticum and Ralstonia solanacearum was evaluated in biopolymer carrier xanthan gum (GX and xanthan gum together with polymer synthetic polyvinylpyrrolidone (PVP. The cultures after growing up to 10(11 ufc mL-1 were injected into the plolymers carriers. The survival of the bacteria was evaluated at room temperature, refrigerator (4ºC and freezer (-20ºC for 36 months. The evaluation of viability of the preserved bacteria was carried through seriate dilutions using drop method. The pathogenicity was observed in plant hosts and through baits. The results allow observing that the concentration of viable cells decreased along the time mainting to 10³ and 10(4 ufc mL-1 for three years with exception, of the formulation to the base of GX and storage the -20°C, that was inefficient for preservation of

  12. Characterization and modification of enzymes in the 2-ketoisovalerate biosynthesis pathway of Ralstonia eutropha H16

    Energy Technology Data Exchange (ETDEWEB)

    Lu, JN; Brigham, CJ; Plassmeier, JK; Sinskey, AJ

    2014-08-01

    2-Ketoisovalerate is an important cellular intermediate for the synthesis of branched-chain amino acids as well as other important molecules, such as pantothenate, coenzyme A, and glucosinolate. This ketoacid can also serve as a precursor molecule for the production of biofuels, pharmaceutical agents, and flavor agents in engineered organisms, such as the betaproteobacterium Ralstonia eutropha. The biosynthesis of 2-ketoisovalerate from pyruvate is carried out by three enzymes: acetohydroxyacid synthase (AHAS, encoded by ilvBH), acetohydroxyacid isomeroreductase (AHAIR, encoded by ilvC), and dihydroxyacid dehydratase (DHAD, encoded by ilvD). In this study, enzymatic activities and kinetic parameters were determined for each of the three R. eutropha enzymes as heterologously purified proteins. AHAS, which serves as a gatekeeper for the biosynthesis of all three branched-chain amino acids, demonstrated the tightest regulation through feedback inhibition by l-valine (IC50 = 1.2 mM), l-isoleucine (IC50 = 2.3 mM), and l-leucine (IC50 = 5.4 mM). Intermediates in the valine biosynthesis pathway also exhibit feedback inhibitory control of the AHAS enzyme. In addition, AHAS has a very weak affinity for pyruvate (K-M = 10.5 mu M) and is highly selective towards 2-ketobutyrate (R = 140) as a second substrate. AHAIR and DHAD are also inhibited by the branched-chain amino acids, although to a lesser extent when compared to AHAS. Experimental evolution and rational site-directed mutagenesis revealed mutants of the regulatory subunit of AHAS (IlvH) (N11S, T34I, A36V, T104S, N11F, G14E, and N29H), which, when reconstituted with wild-type IlvB, lead to AHAS having reduced valine, leucine, and isoleucine sensitivity. The study of the kinetics and inhibition mechanisms of R. eutropha AHAS, AHAIR, and DHAD has shed light on interactions between these enzymes and the products they produce; it, therefore, can be used to engineer R. eutropha strains with optimal production of 2

  13. Violência contra os idosos: análise documental Violencia contra los ancianos: análisis documental Violence against the aged: documental analysis

    OpenAIRE

    Jacy Aurélia Vieira de Souza; Maria Célia de Freitas; Terezinha Almeida de Queiroz

    2007-01-01

    O objetivo do estudo foi analisar os dados de violência e maus-tratos contra os idosos por meio de documentos oficiais, em Fortaleza-CE. Estudo retrospectivo, documental realizada em uma instituição de referência do Ceará, oficializada em denúncias de violência contra idosos. A coleta de dados ocorreu no primeiro semestre de 2005. Dos 424 documentos analisados, 284(67%) identificou-se como abandono dos idosos. Quanto ao agressor, 207(49%) era filho da vítima. Dentre os casos de violências, 16...

  14. Efectividad del tratamiento de la violencia contra la pareja en pacientes drogodependientes

    Directory of Open Access Journals (Sweden)

    Javier Fernández-Montalvo

    2015-04-01

    Full Text Available En este artículo se analiza la efectividad de los programas de tratamiento psicológico para drogodependientes, que presentan conductas violentas contra la pareja. Para ello, se revisan, en primer lugar, los estudios que valoran la influencia del tratamiento habitual sobre las adicciones y la reducción de las conductas violentas contra la pareja. En segundo lugar, se analizan los resultados de los programas de intervención conjunta que se han desarrollado hasta la fecha, en el ámbito internacional, en los centros de tratamiento para la adicción con drogodependientes que ejercen, además, violencia contra la pareja. Los resultados muestran, por una parte, que la intervención con pacientes adictos produce una disminución importante en la tasa de violencia contra la pareja asociada a la adicción. Por otra parte, los programas de intervención con adicciones constituyen un marco de gran utilidad para aplicar, de forma conjunta, tratamientos específicos para aquellos adictos con un problema asociado de violencia contra la pareja. Los resultados de estos programas de intervención muestran los mejores datos en la reducción de la tasa de violencia contra la pareja de los pacientes adictos. Se comentan las implicaciones de todo ello para la práctica clínica y para las investigaciones futuras.

  15. TALE-Like Effectors Are an Ancestral Feature of the Ralstonia solanacearum Species Complex and Converge in DNA Targeting Specificity.

    Science.gov (United States)

    Schandry, Niklas; de Lange, Orlando; Prior, Philippe; Lahaye, Thomas

    2016-01-01

    Ralstonia solanacearum, a species complex of bacterial plant pathogens divided into four monophyletic phylotypes, causes plant diseases in tropical climates around the world. Some strains exhibit a broad host range on solanaceous hosts, while others are highly host-specific as for example some banana-pathogenic strains. Previous studies showed that transcription activator-like (TAL) effectors from Ralstonia, termed RipTALs, are capable of activating reporter genes in planta, if these are preceded by a matching effector binding element (EBE). RipTALs target DNA via their central repeat domain (CRD), where one repeat pairs with one DNA-base of the given EBE. The repeat variable diresidue dictates base repeat specificity in a predictable fashion, known as the TALE code. In this work, we analyze RipTALs across all phylotypes of the Ralstonia solanacearum species complex. We find that RipTALs are prevalent in phylotypes I and IV but absent from most phylotype III and II strains (10/12, 8/14, 1/24, and 1/5 strains contained a RipTAL, respectively). RipTALs originating from strains of the same phylotype show high levels of sequence similarity (>98%) in the N-terminal and C-terminal regions, while RipTALs isolated from different phylotypes show 47-91% sequence similarity in those regions, giving rise to four RipTAL classes. We show that, despite sequence divergence, the base preference for guanine, mediated by the N-terminal region, is conserved across RipTALs of all classes. Using the number and order of repeats found in the CRD, we functionally sub-classify RipTALs, introduce a new simple nomenclature, and predict matching EBEs for all seven distinct RipTALs identified. We experimentally study RipTAL EBEs and uncover that some RipTALs are able to target the EBEs of other RipTALs, referred to as cross-reactivity. In particular, RipTALs from strains with a broad host range on solanaceous hosts cross-react on each other's EBEs. Investigation of sequence divergence between

  16. TALE-like Effectors are an Ancestral Feature of the Ralstonia solanacearum Species Complex and Converge in DNA Targeting Specificity

    Directory of Open Access Journals (Sweden)

    Niklas Schandry

    2016-08-01

    Full Text Available Ralstonia solanacearum, a species complex of bacterial plant pathogens divided into four monophyletic phylotypes, causes plant diseases in tropical climates around the world. Some strains exhibit a broad host range on solanaceous hosts, while others are highly host-specific as for example some banana-pathogenic strains.Previous studies showed that transcription activator-like (TAL effectors from Ralstonia, termed RipTALs, are capable of activating reporter genes in planta, if these are preceded by a matching effector binding element (EBE. RipTALs target DNA via their central repeat domain, where one repeat pairs with one DNA-base of the given EBE. The repeat variable diresidue dictates base repeat specificity in a predictable fashion, known as the TALE code.In this work, we analyze RipTALs across all phylotypes of the Ralstonia solanacearum species complex. We find that RipTALs are prevalent in phylotypes I and IV but absent from most phylotype III and II strains (10/12, 8/14, 1/24 and 1/5 strains contained a RipTAL, respectively.RipTALs originating from strains of the same phylotype show high levels of sequence similarity (>98% in the N-terminal and C-terminal regions, while RipTALs isolated from different phylotypes show 47-91% sequence similarity in those regions, giving rise to four RipTAL classes. We show that, despite sequence divergence, the base preference for guanine, mediated by the N-terminal region, is conserved across RipTALs of all classes.Using the number and order of repeats found in the central repeat domain, we functionally sub-classify RipTALs, introduce a new simple nomenclature, and predict matching EBEs for all seven distinct RipTALs identified. We experimentally study RipTAL EBEs and uncover that some RipTALs are able to target the EBEs of other RipTALs, referred to as cross-reactivity. In particular, RipTALs from strains with a broad host range on solanaceous hosts cross-react on each other’s EBEs.Investigation of

  17. TALE-Like Effectors Are an Ancestral Feature of the Ralstonia solanacearum Species Complex and Converge in DNA Targeting Specificity

    Science.gov (United States)

    Schandry, Niklas; de Lange, Orlando; Prior, Philippe; Lahaye, Thomas

    2016-01-01

    Ralstonia solanacearum, a species complex of bacterial plant pathogens divided into four monophyletic phylotypes, causes plant diseases in tropical climates around the world. Some strains exhibit a broad host range on solanaceous hosts, while others are highly host-specific as for example some banana-pathogenic strains. Previous studies showed that transcription activator-like (TAL) effectors from Ralstonia, termed RipTALs, are capable of activating reporter genes in planta, if these are preceded by a matching effector binding element (EBE). RipTALs target DNA via their central repeat domain (CRD), where one repeat pairs with one DNA-base of the given EBE. The repeat variable diresidue dictates base repeat specificity in a predictable fashion, known as the TALE code. In this work, we analyze RipTALs across all phylotypes of the Ralstonia solanacearum species complex. We find that RipTALs are prevalent in phylotypes I and IV but absent from most phylotype III and II strains (10/12, 8/14, 1/24, and 1/5 strains contained a RipTAL, respectively). RipTALs originating from strains of the same phylotype show high levels of sequence similarity (>98%) in the N-terminal and C-terminal regions, while RipTALs isolated from different phylotypes show 47–91% sequence similarity in those regions, giving rise to four RipTAL classes. We show that, despite sequence divergence, the base preference for guanine, mediated by the N-terminal region, is conserved across RipTALs of all classes. Using the number and order of repeats found in the CRD, we functionally sub-classify RipTALs, introduce a new simple nomenclature, and predict matching EBEs for all seven distinct RipTALs identified. We experimentally study RipTAL EBEs and uncover that some RipTALs are able to target the EBEs of other RipTALs, referred to as cross-reactivity. In particular, RipTALs from strains with a broad host range on solanaceous hosts cross-react on each other’s EBEs. Investigation of sequence divergence

  18. TALE-Like Effectors Are an Ancestral Feature of the Ralstonia solanacearum Species Complex and Converge in DNA Targeting Specificity.

    Science.gov (United States)

    Schandry, Niklas; de Lange, Orlando; Prior, Philippe; Lahaye, Thomas

    2016-01-01

    Ralstonia solanacearum, a species complex of bacterial plant pathogens divided into four monophyletic phylotypes, causes plant diseases in tropical climates around the world. Some strains exhibit a broad host range on solanaceous hosts, while others are highly host-specific as for example some banana-pathogenic strains. Previous studies showed that transcription activator-like (TAL) effectors from Ralstonia, termed RipTALs, are capable of activating reporter genes in planta, if these are preceded by a matching effector binding element (EBE). RipTALs target DNA via their central repeat domain (CRD), where one repeat pairs with one DNA-base of the given EBE. The repeat variable diresidue dictates base repeat specificity in a predictable fashion, known as the TALE code. In this work, we analyze RipTALs across all phylotypes of the Ralstonia solanacearum species complex. We find that RipTALs are prevalent in phylotypes I and IV but absent from most phylotype III and II strains (10/12, 8/14, 1/24, and 1/5 strains contained a RipTAL, respectively). RipTALs originating from strains of the same phylotype show high levels of sequence similarity (>98%) in the N-terminal and C-terminal regions, while RipTALs isolated from different phylotypes show 47-91% sequence similarity in those regions, giving rise to four RipTAL classes. We show that, despite sequence divergence, the base preference for guanine, mediated by the N-terminal region, is conserved across RipTALs of all classes. Using the number and order of repeats found in the CRD, we functionally sub-classify RipTALs, introduce a new simple nomenclature, and predict matching EBEs for all seven distinct RipTALs identified. We experimentally study RipTAL EBEs and uncover that some RipTALs are able to target the EBEs of other RipTALs, referred to as cross-reactivity. In particular, RipTALs from strains with a broad host range on solanaceous hosts cross-react on each other's EBEs. Investigation of sequence divergence between

  19. Colonização radicular de plantas cultivadas por Ralstonia solanacearum biovares 1, 2 e 3 Root colonization of cultivated plants inoculated with Ralstonia solanacearum biovar 1, 2 and 3

    Directory of Open Access Journals (Sweden)

    José Magno Martins Bringel

    2001-09-01

    Full Text Available A murcha bacteriana causada por Ralstonia solanacearum é considerada a principal doença de origem bacteriana no mundo. Centenas de espécies de plantas pertencentes a mais de 50 famílias botânicas têm sido relatadas como hospedeiras. Foi avaliada, em condições de casa de vegetação, a colonização radicular de alface, arroz, cebolinha, ervilha, pepino e soja, por seis isolados de Ralstonia solanacearum (Rs, biovares 1, 2 e 3. Estirpes dos isolados de Rs com resistência múltipla aos antibióticos estreptomicina, rifampicina e cloranfenicol foram utilizadas. A colonização foi avaliada 45 dias após a inoculação, através do plaqueamento de suspensão de trituração em meio de cultura semi-seletivo. A ervilha comportou-se como hospedeira de todos os isolados mas, apenas um isolado da biovar 3 foi patogênico a esta espécie. A soja apresentou populações elevadas de quatro isolados distribuídos entre as três biovares e o pepino, de apenas dois isolados das biovares 1 e 3. Exceto para o isolado que foi patogênico à ervilha, as plantas não apresentaram sintomas da doença, comportando-se como hospedeiras não suscetível. O arroz apresentou populações muito baixas de todos os isolados. Alface e cebolinha não hospedaram nenhum dos isolados inoculados. Os resultados mostram a capacidade de Rs colonizar e sobreviver em diferentes espécies de plantas como rizobactérias.Bacterial wilt caused by Ralstonia solanacearum is considered the main plant disease of bacterial origin in the world, where hundreds of plant species in more than 50 botanical families are host plants. Root colonization of lettuce (Lactuca sativa, rice (Oryza sativa, spring onion (Allium fistulosum, pea (Pisum sativum, cucumber (Cucumis sativus, and soybean (Glycine max by six isolates of Ralstonia solanacearum (Rs biovars 1, 2 and 3 was evaluated under greenhouse conditions. Bacterial strains resistant to streptomycin, rifampicin and chloranfenicol were used

  20. Avaliação da resistência do eucalipto à murcha-bacteriana causada por Ralstonia solanacearum

    OpenAIRE

    Reginaldo Gonçalves Mafia; Acelino Couto Alfenas; Maria Alves Ferreira

    2014-01-01

    O plantio de clones de eucalipto resistentes constitui a principal estratégia para o controle de doenças no campo. Assim, este trabalho objetivou testar métodos de inoculação de Ralstonia solanacearum visando selecionar eucalipto resistente à murcha-bacteriana. Os métodos de inoculação foram selecionados em função da facilidade operacional e testados na avaliação de quatro clones (híbridos E. urophylla x E. grandis): i) aplicação de 5 mL de inóculo (10(8) ufc/mL) na região do coleto de mudas;...

  1. Study on the Response of some Solanaceous Plants to Ralstonia solanacearum Biovars 2A and 2T

    Directory of Open Access Journals (Sweden)

    Vahideh Hasabi

    2014-09-01

    Full Text Available Ralstonia solanacearum is a very destructive bacterial plant pathogen that causes wilt disease in solanaceae crops. To study the response of potato, tomato, eggplant and petunia to bacterial wilt disease, two isolates representing biovars 2A and 2T of R. solanacearum were evaluated for their pathogenicity aggressiveness and tobacco hypersensitivity response (HR at two different temperature regimes. The response of plants was estimated by appearance of wilting symptoms and bacterial density in the xylems of inoculated plants over a four weeks period. The results indicated that isolates representing biovar 2T caused less disease in all the species and cultivars compared to isolates biovar 2A, at both temperature conditions and also, there were significant differences in susceptibility to biovars 2A and 2T of R. solanacearum among tomato, eggplant and petunia and potato cultivars.

  2. Higiene contra la anemia de los mineros. La lucha contra la anquilostomiasis en España (1897-1936

    Directory of Open Access Journals (Sweden)

    Rodríguez Ocaña, Esteban

    2006-06-01

    Full Text Available This study analyses the Spanish participation in the international campaign against ancylostomiasis during the period of the establishing and hegemony of Social Medicine. Through study of the main interventions carried out, including the agreement with the Rockefeller Foundation, its effects are observed on the popularization of laboratory medicine, the introduction of health concerns into employment legislation and the genesis of new rural health structures.

    Este trabajo analiza la participación española en la campaña internacional contra la anquilostomiasis durante el periodo de constitución y hegemonía de la Medicina social. A través del estudio de las principales intervenciones realizadas, incluyendo el acuerdo con la Fundación Rockefeller, se observan sus efectos sobre la popularización de la medicina de laboratorio, la introducción de la preocupación por la salud en la legislación laboral y la génesis de estructuras nuevas para la sanidad rural.

  3. Polysaccharide Agaricus blazei Murill stimulates myeloid derived suppressor cell differentiation from M2 to M1 type, which mediates inhibition of tumour immune-evasion via the Toll-like receptor 2 pathway.

    Science.gov (United States)

    Liu, Yi; Zhang, Lingyun; Zhu, Xiangxiang; Wang, Yuehua; Liu, WenWei; Gong, Wei

    2015-11-01

    Gr-1(+) CD11b(+) myeloid-derived suppressor cells (MDSCs) accumulate in tumor-bearing animals and play a critical negative role during tumor immunotherapy. Strategies for inhibition of MDSCs are expected to improve cancer immunotherapy. Polysaccharide Agaricus blazei Murill (pAbM) has been found to have anti-cancer activity, but the underlying mechanism of this is poorly understood. Here, pAbM directly activated the purified MDSCs through inducing the expression of interleukin-6 (IL-6), IL-12, tumour necrosis factor and inducible nitric oxide synthase (iNOS), CD86, MHC II, and pSTAT1 of it, and only affected natural killer and T cells in the presence of Gr-1(+) CD11b(+) monocytic MDSCs. On further analysis, we demonstrated that pAbM could selectively block the Toll-like receptor 2 (TLR2) signal of Gr-1(+) CD11b(+) MDSCs and increased their M1-type macrophage characteristics, such as producing IL-12, lowering expression of Arginase 1 and increasing expression of iNOS. Extensive study showed that Gr-1(+) CD11b(+) MDSCs by pAbM treatment had less ability to convert the CD4(+) CD25(-) cells into CD4(+) CD25(+) phenotype. Moreover, result from selective depletion of specific cell populations in xenograft mice model suggested that the anti-tumour effect of pAbM was dependent on Gr-1(+ ) CD11b(+) monocytes, nether CD8(+) T cells nor CD4(+) T cells. In addition to, pAbM did not inhibit tumour growth in TLR2(-/-) mice. All together, these results suggested that pAbM, a natural product commonly used for cancer treatment, was a specific TLR2 agonist and had potent anti-tumour effects through the opposite of the suppressive function of Gr-1(+) CD11b(+) MDSCs. PMID:26194418

  4. Polysaccharide Agaricus blazei Murill stimulates myeloid derived suppressor cell differentiation from M2 to M1 type, which mediates inhibition of tumour immune-evasion via the Toll-like receptor 2 pathway.

    Science.gov (United States)

    Liu, Yi; Zhang, Lingyun; Zhu, Xiangxiang; Wang, Yuehua; Liu, WenWei; Gong, Wei

    2015-11-01

    Gr-1(+) CD11b(+) myeloid-derived suppressor cells (MDSCs) accumulate in tumor-bearing animals and play a critical negative role during tumor immunotherapy. Strategies for inhibition of MDSCs are expected to improve cancer immunotherapy. Polysaccharide Agaricus blazei Murill (pAbM) has been found to have anti-cancer activity, but the underlying mechanism of this is poorly understood. Here, pAbM directly activated the purified MDSCs through inducing the expression of interleukin-6 (IL-6), IL-12, tumour necrosis factor and inducible nitric oxide synthase (iNOS), CD86, MHC II, and pSTAT1 of it, and only affected natural killer and T cells in the presence of Gr-1(+) CD11b(+) monocytic MDSCs. On further analysis, we demonstrated that pAbM could selectively block the Toll-like receptor 2 (TLR2) signal of Gr-1(+) CD11b(+) MDSCs and increased their M1-type macrophage characteristics, such as producing IL-12, lowering expression of Arginase 1 and increasing expression of iNOS. Extensive study showed that Gr-1(+) CD11b(+) MDSCs by pAbM treatment had less ability to convert the CD4(+) CD25(-) cells into CD4(+) CD25(+) phenotype. Moreover, result from selective depletion of specific cell populations in xenograft mice model suggested that the anti-tumour effect of pAbM was dependent on Gr-1(+ ) CD11b(+) monocytes, nether CD8(+) T cells nor CD4(+) T cells. In addition to, pAbM did not inhibit tumour growth in TLR2(-/-) mice. All together, these results suggested that pAbM, a natural product commonly used for cancer treatment, was a specific TLR2 agonist and had potent anti-tumour effects through the opposite of the suppressive function of Gr-1(+) CD11b(+) MDSCs.

  5. Pros y contras de la creación del Hospital contra el Cáncer en Costa Rica

    Directory of Open Access Journals (Sweden)

    Grettel Carolina Alfaro Campo

    2004-03-01

    Full Text Available La relevancia que representa para el país la creación del hospital oncológico es controversial, porque se ha recibido amplia cobertura de los noticieros, donde se han hecho muy importantes denuncias, y parte de las poblaciones estudiadas para este trabajo, están en contra de este proyecto, 25 % de los médicos no le encuentra el beneficio directo. En cuanto a quien debería manejar dicho hospital, ambas poblaciones (medicas y civiles concordaron que la CCSS es el organismo que debe encargarse del manejo. Al ICCC ( Instituto Costarricense Contra el Cáncer se le ha relacionado solamente con la construcción del edificio del hospital que atienda el cáncer, pero la ley 7765 lo establece como órgano encargado de la investigación, capacitación, prevención y tratamiento de esta enfermedad, por lo que es necesario llevar a cabo un análisis financiero de costos que dé a conocer cuáles serían los beneficios y qué cambios implicaría la creación de un hospital oncológico, pero para que las cosas funcionen en orden, la transparencia y la comunicación se vuelven imprescindibles. A pesar de todo, es probable que la creación de este centro especializado en cáncer implique una diferencia significativa en la situación de salud del paciente con cáncer en nuestro país.The relevance that represents to the country the creation of the oncological hospital is controversial, because it has received a wide coverage by the news, where important denounces have been made, and part of the populations studied for this essay are against this project, 25 % of the medical doctors do not find a direct benefit. As to who has to lead the project, both populations (medical and civilian agree that the CCSS has to lead it. The ICCC (Costa Rican Institute Against Cancer has been associated with the construction of the facilities of the hospital that give attendance, but the law 7765 establishes it like the organism in charge of the investigation, capacitating

  6. "Intelligent" descriptions of microbial kinetics in finitely dispersed bioreactors: neural and cybernetic models for PHB biosynthesis by Ralstonia eutropha

    OpenAIRE

    Patnaik Pratap R

    2007-01-01

    Abstract Background For many microbial processes, the complexity of the metabolisms and the responses to transient and realistic conditions are difficult to capture in mechanistic models. The cells seem to have an innate intelligence that enables them to respond optimally to environmental changes. Some "intelligent" models have therefore been proposed and compared with a mechanistic model for fed-batch cultures of Ralstonia eutropha. Results Two kinds of models have been proposed to describe ...

  7. EFFECTIVENESS OF CLOSTRIDIUM ISOLATES ON AEROPONICALLY CULTIVATED POTATO TO PROTECT AGAINST RALSTONIA SOLANACEARUM (BACTERIAL WILT) AND PCR DETECTION ON LATEN INFECTION ON TUBERS.

    OpenAIRE

    Baharuddin.

    2012-01-01

    Aeroponic technology was used to optimize production of potato mini tubers. Several adventage was the production 5-10 times higher and tuber size was bigger than covensional methods, but unfortunatelly some times yield loss was present caused by bacterial wilt Ralstonia solanacearum. Although not all of plants were died and some of plants still produce tubers, but laten infection of bacterial wilt was occured. Early observation on microbes diversity on healthy and on infected plants ...

  8. Role of tfdCIDIEIFI and tfdDIICIIEIIFII Gene Modules in Catabolism of 3-Chlorobenzoate by Ralstonia eutropha JMP134(pJP4)

    OpenAIRE

    Pérez-Pantoja, D.; L. Guzmán; Manzano, M.; Pieper, D. H.; González, B.

    2000-01-01

    The enzymes chlorocatechol-1,2-dioxygenase, chloromuconate cycloisomerase, dienelactone hydrolase, and maleylacetate reductase allow Ralstonia eutropha JMP134(pJP4) to degrade chlorocatechols formed during growth in 2,4-dichlorophenoxyacetate or 3-chlorobenzoate (3-CB). There are two gene modules located in plasmid pJP4, tfdCIDIEIFI (module I) and tfdDIICIIEIIFII (module II), putatively encoding these enzymes. To assess the role of both tfd modules in the degradation of chloroaromatics, each ...

  9. Desarrollo de vacunas contra el virus de la inmunodeficiencia humana tipo 1: Relevancia de la inmunidad celular contra subtipos

    Directory of Open Access Journals (Sweden)

    Ana María Rodríguez

    2010-12-01

    Full Text Available Han pasado casi 30 años de la detección de los primeros casos de infección con HIV-1 y aún no se ha conseguido desarrollar una vacuna efectiva y segura. A pesar del impacto positivo sobre la pandemia que se ha conseguido gracias a los avances en la terapia antirretroviral (TARV, el HIV/sida sigue constituyendo un grave problema para la salud pública, especialmente en los países en desarrollo, donde es difícil el acceso al tratamiento. En el mundo, 33 millones de personas viven con el virus del sida, mientras que en la Argentina se calcula que habría unos 120 000 infectados. Uno de los desafíos para lograr una vacuna contra el HIV es la variabilidad viral. El grupo M, responsable de la pandemia, se encuentra dividido en 10 subtipos y varios sub-subtipos, además de las 48 formas recombinantes circulantes y más de cien formas recombinantes únicas. La epidemia de HIV en nuestro país es tan compleja como en el resto del mundo, con la co-circulación principalmente de virus pertenecientes al subtipo B y recombinantes BF (CRF12_BF y derivadas. A pesar de la cantidad de trabajos dedicados a la caracterización de la respuesta inmune y al desarrollo de vacunas, no queda claro cuál es el impacto de la variabilidad en la elección del antígeno. Trabajos realizados en nuestro laboratorio demuestran el papel que juega la inmunidad celular con respecto a las variantes recombinantes BF, tanto en humanos como en modelos animales. Estos resultados son de importancia en el desarrollo de futuras vacunas para nuestra región.

  10. Maus tratos contra crianças e adolescents Malos tratos contra niños y adolescentes Maltreatmens against children and teenagers

    Directory of Open Access Journals (Sweden)

    Christine Baccarat de Godoy Martins

    2010-08-01

    Full Text Available Os maus-tratos contra a criança e o adolescente têm sido reconhecidos como um fenômeno crescente no mundo, mas cujo conhecimento ainda está em processo de construção em função de sua complexidade. O estudo apresenta uma revisão bibliográfica, cujo objetivo foi conhecer e divulgar os dados epidemiológicos acerca da violência praticada contra menores, bem como discutir o conhecimento da magnitude desses eventos, os fatores relacionados e as consequências para as vítimas. A literatura aponta para a abrangência e magnitude da violência praticada contra crianças e adolescentes e enfatiza a importância de se conhecer a natureza e a realidade acerca destes eventos a fim de se formar um diagnóstico que auxilie na elaboração e implantação de estratégias de prevenção e intervenção.Los malos tratos contra niños y adolescentes están recibiendo cada vez más atención debido a su creciente e inquietante papel en la morbimortalidad en diferentes partes del mundo. El estudio tuvo como objetivo presentar una revisión bibliográfica de los datos epidemiologicos acerca de la violencia contra niños y adolescentes, discutir la magnitud, factores relacionados e consecuencias para la víctimas. La literatura apunta para la magnitud de la violencia contra niños y adolescentes e enfatizan, aún, la importancia de conocer la naturaleza y la realidad acerca de los eventos a fin de formar un diagnóstico que dé auxilio en la elaboración e implantación de estrategias específicas de prevención e intervención.The maltreatments against children and adolescents are admitted as a crescent phenomenon in world, but its knowledge are in building process due to its complexity. This study show a revising the literature with aims know and publicise epidemiological data about the violence against children and adolescents, discuss the knowledge about magnitude of this violence, the related factors and the consequences for victims. The literature

  11. Vacinas contra o Papilomavirus humano Vaccines against human Papillomavirus

    Directory of Open Access Journals (Sweden)

    Sidney Roberto Nadal

    2006-09-01

    Full Text Available Infecção pelo HPV é mais comum entre indivíduos jovens e sexualmente ativos e é tão prevalente que 75 a 80% da população será infectada durante sua vida. A maioria das lesões cede espontaneamente ao ponto de não ser detectada nem com os métodos mais sensíveis. Preocupam as infecções persistentes com os HPV oncogênicos, que aumentam o risco da neoplasia intraepitelial e do câncer. Duas formas de prevenção foram propostas: o rastreamento das lesões precursoras e a imunização contra o HPV, para evitá-las. Embora a incidência do câncer genital venha diminuindo devido aos métodos de rastreamento, seu custo é elevado e os resultados anormais provocam significantes distúrbios emocionais. Logo, a prevenção das doenças relacionadas ao vírus deveria ser disponível sob a forma de vacinação. Na década passada, iniciaram-se os testes clínicos com várias vacinas que tinham como alvo os tipos comuns do HPV. As vacinas profiláticas evitam a infecção pelo HPV e suas doenças associadas e as terapêuticas induzem a regressão das lesões pré-cancerosas e a remissão do câncer invasivo. As primeiras são compostas pela proteína capsídeo L1 do HPV que se auto-reproduz em partículas virus-like (VLP quando expressa em sistemas recombinantes, induzindo forte resposta humoral com anticorpos neutralizadores. Determinam 100% de proteção contra a infecção pelos tipos específicos do HPV e impedem o aparecimento de neoplasias intraepiteliais de alto grau até pelo menos 5 anos após a imunização. A eficácia das vacinas feitas com as proteínas E6 e E7 também vem sendo pesquisada em modelos animais. As vacinas vêm mostrando maior efetividade quando administradas antes do início da atividade sexual e as campanhas de vacinação deverão ter como alvo as mulheres adolescentes e as pré-adolescentes. Espera-se, com o uso disseminado da vacina, que 70% dos cânceres cervicais sejam evitados, bem como a proporção das

  12. A computer program for fast and easy typing of a partial endoglucanase gene sequence into genospecies and sequevars 1&2 of the Ralstonia solanacearum species complex.

    Science.gov (United States)

    Stulberg, Michael J; Huang, Qi

    2016-04-01

    The phytopathogen Ralstonia solanacearum is a species complex that contains race 3 biovar 2 strains belonging to phylotype IIB sequevars 1 and 2 that are quarantined or select agent pathogens. Recently, the R. solanacearum species complex strains have been reclassified into three genospecies: R. solanacearum, Ralstonia pseudosolanacearum and Ralstonia syzygii. An unidentified R. solanacearum strain is considered a select agent in the US until proven to be a non-race 3 biovar 2 (non-phylotype IIB sequevars 1&2). Currently, sequevars of R. solanacearum species complex strains can only be determined by phylogenetic analysis of a partial endoglucanase (egl) sequence of approximately 700-bp in length. Such analysis, however, requires expert knowledge to properly trim the sequence, to include the correct reference strains, and to interpret the results. By comparing GenBank egl sequences of representative R. solanacearum species-complex strains, we identified genospecies- and sequevar 1 and 2-specific single nucleotide polymorphisms (SNPs). We also designed primers to amplify a shorter, 526-bp, egl fragment from R. solanacearum species complex strains for easy sequencing of the amplicon, and to facilitate direct and specific amplification of egl from R. solanacearum-infected plant samples without the need of bacterial isolation. We wrote a computer program (Ralstonia solanacearum typing program) that analyzes a minimum 400-bp user-input egl sequence from a R. solanacearum strain for egl homology and SNP content to determine 1) whether it belongs to the R. solanacearum species complex, 2) if so, to which genospecies, and 3) whether it is of the sequevar type (sequevars 1 and 2) associated with the select agent/quarantined R. solanacearum strain. The program correctly typed all 371 tested egl sequences with known sequevars, obtained either from GenBank or through personal communication. Additionally, the program successfully typed 25 R. solanacearum strains in our

  13. Tipología de agresores contra la pareja en prisión

    OpenAIRE

    Loinaz Calvo, Ismael; Echeburúa Odriozola, Enrique; Torrúbia, Rafael

    2010-01-01

    Los agresores contra la pareja no constituyen un grupo homogéneo. Numerosos estudios en el ámbito anglosajón avalan la posibilidad de diferenciar distintos subtipos de agresores, pero hay divergencias entre ellos. Una de las principales aplicaciones de las tipologías es la adecuación de los tratamientos a las características del sujeto. El presente estudio-piloto tiene como objetivo establecer empíricamente una tipología de agresores contra la pareja en un ámbito español. La muestra constó de...

  14. Engineering Ralstonia eutropha for Production of Isobutanol (IBT) Motor Fuel from Carbon Dioxide, Hydrogen, and Oxygen Project Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Sinskey, Anthony J. [MIT; Worden, Robert Mark [Michigan State University MSU; Brigham, Christopher [MIT; Lu, Jingnan [MIT; Quimby, John Westlake [MIT; Gai, Claudia [MIT; Speth, Daan [MIT; Elliott, Sean [Boston University; Fei, John Qiang [MIT; Bernardi, Amanda [MIT; Li, Sophia [MIT; Grunwald, Stephan [MIT; Grousseau, Estelle [MIT; Maiti, Soumen [MSU; Liu, Chole [MSU

    2013-12-16

    This research project is a collaboration between the Sinskey laboratory at MIT and the Worden laboratory at Michigan State University. The goal of the project is to produce Isobutanol (IBT), a branched-chain alcohol that can serve as a drop-in transportation fuel, through the engineered microbial biosynthesis of Carbon Dioxide, Hydrogen, and Oxygen using a novel bioreactor. This final technical report presents the findings of both the biological engineering work at MIT that extended the native branched-chain amino acid pathway of the wild type Ralstonia eutropha H16 to perform this biosynthesis, as well as the unique design, modeling, and construction of a bioreactor for incompatible gasses at Michigan State that enabled the operational testing of the complete system. This 105 page technical report summarizing the three years of research includes 72 figures and 11 tables of findings. Ralstonia eutropha (also known as Cupriavidus necator) is a Gram-negative, facultatively chemolithoautotrophic bacteria. It has been the principle organism used for the study of polyhydroxybutyrate (PHB) polymer biosynthesis. The wild-type Ralstonia eutropha H16 produces PHB as an intracellular carbon storage material while under nutrient stress in the presence of excess carbon. Under this stress, it can accumulate approximately 80 % of its cell dry weight (CDW) as this intracellular polymer. With the restoration of the required nutrients, the cells are then able to catabolize this polymer. If extracted from the cell, this PHB polymer can be processed into biodegradable and biocompatible plastics, however for this research, it is the efficient metabolic pathway channeling the captured carbon that is of interest. R. eutropha is further unique in that it contains two carbon-fixation Calvin–Benson–Bassham cycle operons, two oxygen-tolerant hydrogenases, and several formate dehydrogenases. It has also been much studied for its ability in the presence of oxygen, to fix carbon dioxide

  15. Cloning and characterization of PR5 gene from Curcuma amada and Zingiber officinale in response to Ralstonia solanacearum infection.

    Science.gov (United States)

    Prasath, D; El-Sharkawy, I; Sherif, S; Tiwary, K S; Jayasankar, S

    2011-10-01

    Ginger (Zingiber officinale Roscoe), is an important spice crop that is badly affected by Ralstonia solanacearum wilt. Ginger does not set seed and sexual recombination has never been reported. In spite of extensive search in its habitats, no resistance source to Ralstonia induced bacterial wilt, could be located in ginger. Curcuma amada Roxb. is a potential donor for bacterial wilt resistance to Z. officinale, if the exact mechanism of resistance is understood. Pathogenesis-related (PR)-5 proteins are a family of proteins that are induced by different phytopathogens in many plants and share significant sequence similarity with thaumatin. Two putative PR5 genes, CaPR5 and ZoPR5, were amplified from C. amada and ginger, which encode precursor proteins of 227 and 224 amino acid residues, respectively, and share high homology with a number of other PR5 genes. The secondary and three-dimensional structure comparison did not reveal any striking differences between these two proteins. The expression of Ca and ZoPR5s under R. solanacearum inoculation was analyzed at different time points using quantitative real-time PCR (qRT-PCR). Our results reveal that CaPR5 is readily induced by the bacterium in C. amada, while ZoPR5 induction was very weak and slow in ginger. These results suggest that the CaPR5 could play a role in the molecular defense response of C. amada to pathogen attack. This is the first report of the isolation of PR5 gene from the C. amada and Z. officinale. Promoter analysis indicates the presence of a silencing element binding factor in ZoPR5-promoter, but not in CaPR5. Prospective promoter elements, such as GT-1 box and TGTCA, implicated as being positive regulatory elements for expression of PR proteins, occur in the 5'-flanking sequences of the CaPR5. Transient GUS expression study confirms its action with a weaker GUS expression in ginger, indicating that the PR5 expression may be controlled in the promoter. PMID:21594675

  16. 75 FR 13301 - Los Vaqueros Reservoir Expansion, Contra Costa and Alameda Counties, CA

    Science.gov (United States)

    2010-03-19

    ... Bureau of Reclamation Los Vaqueros Reservoir Expansion, Contra Costa and Alameda Counties, CA AGENCY... Register on February 20, 2009 (74 FR 7922). The written comment period on the Draft EIS/EIR ended on April... Area, the central and south Delta, and service areas of San Francisco Bay Area water agencies....

  17. Aspectos relevantes del uso de Mycobacterium´habana´ como candidato vacunal contra la tuberculosis

    Directory of Open Access Journals (Sweden)

    Iliana Valdés

    2011-12-01

    Full Text Available La eficacia protectora de la actual vacuna (BCG contra la tuberculosis, para contrarrestar las formas pulmonares de esta enfermedad y su reactivación, resulta variable o poco eficiente, lo cual impone la búsqueda urgente de nuevas alternativas profilácticas contra esta enfermedad. Basados en las ventajas inmunogénicas que ofrece el uso de vacunas vivas, se han encaminado diferentes estrategias de este tipo empleando mutantes auxotróficos de Mycobacterium tuberculosis , BCG recombinante o micobacterias no tuberculosas. Existen evidencias experimentales acerca de la protección conferida tras la vacunación con cepas vivas, inactivadas o fracciones proteicas de Mycobacterium'habana' TMC-5135 contra la infección por Mycobacterium tuberculosis. Esta respuesta protectora parece ir aparejada de escasos signos de virulencia en los modelos animales ensayados, lo cual coloca a M.´habana´ dentro de los posibles candidatos vacunales contra la tuberculosis al ajustarse a la condición que impone una vacuna clásica de reproducir la infección y los eventos inmunes que le suceden lo más fielmente posible a como ocurren de manera natural, sin causar extensos daños en el receptor.

  18. La imprescriptibilidad de los crímenes contra la humanidad en Uruguay

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    José Manuel Sánchez Patrón

    2014-06-01

    Full Text Available La ratificación del Convenio sobre la imprescriptibilidad de los crímenes de guerra y de los crímenes de lesa humanidad por parte de Uruguay, constituye un primer paso dirigido a limitar la impunidad de los partícipes en la comisión de estas infracciones internacionales. Para la consecución de esta misma finalidad, el Estado Uruguayo ha dado un segundo paso, consistente en la ratificación del Estatuto de la Corte Penal Internacional, lo que ha llevado a efecto casi un año después del anterior. Ambas decisiones demuestran la intención de Uruguay de comprometerse Internacionalmente con el fin de evitar la impunidad de los responsables de la comisión de determinadas figuras delictivas, especialmente los crímenes de guerra y los crímenes contra la humanidad, ya que en tomo a estas dos infracciones internacionales gravitan los convenios internacionales a los que nos acabamos de referir.Contenido: imprescriptibilidad de los crímenes contra la humanidad en el pasado. Imprescriptibilidad de los crímenes contra la humanidad en el presente. Imprescriptibilidad de los crímenes contra la humanidad en el futuro. Conclusiones

  19. Cloning, expression, purification, crystallization and X-ray crystallographic analysis of β-ketothiolase B from Ralstonia eutropha H16.

    Science.gov (United States)

    Kim, Eun-Jung; Son, Hyeoncheol Francis; Chang, Jeong Ho; Kim, Kyung-Jin

    2014-03-01

    Polyhydroxyalkanoates are linear polyesters that are produced by bacterial fermentation and are used as biodegradable bioplastics. β-Ketothiolase B (BktB) from Ralstonia eutropha (ReBktB) is a key enzyme for the production of various types of copolymers by catalyzing the condensation reactions of acetyl-CoA with propionyl-CoA and butyryl-CoA. The ReBktB protein was crystallized using the hanging-drop vapour-diffusion method in the presence of 25% polyethylene glycol 3350, 0.1 M bis-tris pH 6.5, 0.2 M lithium sulfate at 295 K. X-ray diffraction data were collected to a maximum resolution of 2.3 Å on a synchrotron beamline. The crystal belonged to space group C2221, with unit-cell parameters a = 106.95, b = 107.24, c = 144.14 Å. With two molecules per asymmetric unit, the crystal volume per unit protein weight (VM) is 2.54 Å(3) Da(-1), which corresponds to a solvent content of approximately 51.5%. The structure was solved by the molecular-replacement method and refinement of the structure is in progress. PMID:24598917

  20. Cloning, expression, purification, crystallization and X-ray crystallographic analysis of PhaA from Ralstonia eutropha.

    Science.gov (United States)

    Kim, Eun-Jung; Kim, Kyung-Jin

    2014-11-01

    Polyhydroxybutyrate (PHB) is a biopolymer that is in the spotlight because of its broad applications in bioplastics, fine chemicals, implant biomaterials and biofuels. PhaA from Ralstonia eutropha (RePhaA) is the first enzyme in the PHB biosynthetic pathway and catalyzes the condensation reaction of two acetyl-CoA molecules to give acetoacetyl-CoA. RePhaA was crystallized using the hanging-drop vapour-diffusion method in the presence of 20% polyethylene glycol monomethyl ether 2K, 0.1 M Tris-HCl pH 8.5 and 0.2 M trimethylamine N-oxide dihydrate at 295 K. X-ray diffraction data were collected to a maximum resolution of 1.96 Å on a synchrotron beamline. The crystal belonged to space group P2₁, with unit-cell parameters a=68.38, b=105.47, c=106.91 Å, α=γ=90, β=106.18°. With four subunits per asymmetric unit, the crystal volume per unit protein weight (VM) is 2.3 Å3 Da(-1), which corresponds to a solvent content of approximately 46.2%. The structure was solved by the molecular-replacement method and refinement of the structure is in progress. PMID:25372833

  1. The effector AWR5 from the plant pathogen Ralstonia solanacearum is an inhibitor of the TOR signalling pathway.

    Science.gov (United States)

    Popa, Crina; Li, Liang; Gil, Sergio; Tatjer, Laura; Hashii, Keisuke; Tabuchi, Mitsuaki; Coll, Núria S; Ariño, Joaquín; Valls, Marc

    2016-06-03

    Bacterial pathogens possess complex type III effector (T3E) repertoires that are translocated inside the host cells to cause disease. However, only a minor proportion of these effectors have been assigned a function. Here, we show that the T3E AWR5 from the phytopathogen Ralstonia solanacearum is an inhibitor of TOR, a central regulator in eukaryotes that controls the switch between cell growth and stress responses in response to nutrient availability. Heterologous expression of AWR5 in yeast caused growth inhibition and autophagy induction coupled to massive transcriptomic changes, unmistakably reminiscent of TOR inhibition by rapamycin or nitrogen starvation. Detailed genetic analysis of these phenotypes in yeast, including suppression of AWR5-induced toxicity by mutation of CDC55 and TPD3, encoding regulatory subunits of the PP2A phosphatase, indicated that AWR5 might exert its function by directly or indirectly inhibiting the TOR pathway upstream PP2A. We present evidence in planta that this T3E caused a decrease in TOR-regulated plant nitrate reductase activity and also that normal levels of TOR and the Cdc55 homologues in plants are required for R. solanacearum virulence. Our results suggest that the TOR pathway is a bona fide T3E target and further prove that yeast is a useful platform for T3E function characterisation.

  2. Improving a PCR-Based Method for Identification of Ralstonia solanacearum in Natural Sources of West Malaysia

    Directory of Open Access Journals (Sweden)

    Reza Khakvar

    2008-01-01

    Full Text Available Ralstonia solanacearum, a soil-borne plant pathogen, causes lethal wilting disease of more than 200 plants worldwide. This very wide host range covers both monocots and dicots, extending from annual plants to trees and shrubs. Although generally its considered as a plant pathogen, R. solanacearum behaves primarily as a saprophytic bacterium able to survive for long periods of time in various natural habitats such as surface waters and different types of soils. Epidemiological and ecological studies on pathogen distribution in the environment are seriously hindered by the lack of efficient detection method especially when the concentration of the pathogen is either very low or is present in a latent, dormant or non-culturable state. With due attention to importance of R. solanacearum in Malaysia and several irreparable losses that every year caused by this bacterium, this is prompted current study to develop a sensitive PCR-Based method to improve the detection of R. solanacearum in natural sources. We selected the previously reported primers (OLI1;OLI2; Y2; JE2 for their sensitivity and specificity detection of the bacterium in water and soil by a modification of PCR assay.

  3. Phylogeny and population structure of brown rot- and Moko disease-causing strains of Ralstonia solanacearum phylotype II.

    Science.gov (United States)

    Cellier, G; Remenant, B; Chiroleu, F; Lefeuvre, P; Prior, P

    2012-04-01

    The ancient soilborne plant vascular pathogen Ralstonia solanacearum has evolved and adapted to cause severe damage in an unusually wide range of plants. In order to better describe and understand these adaptations, strains with very similar lifestyles and host specializations are grouped into ecotypes. We used comparative genomic hybridization (CGH) to investigate three particular ecotypes in the American phylotype II group: (i) brown rot strains from phylotypes IIB-1 and IIB-2, historically known as race 3 biovar 2 and clonal; (ii) new pathogenic variants from phylotype IIB-4NPB that lack pathogenicity for banana but can infect many other plant species; and (iii) Moko disease-causing strains from phylotypes IIB-3, IIB-4, and IIA-6, historically known as race 2, that cause wilt on banana, plantain, and Heliconia spp. We compared the genomes of 72 R. solanacearum strains, mainly from the three major ecotypes of phylotype II, using a newly developed pangenomic microarray to decipher their population structure and gain clues about the epidemiology of these ecotypes. Strain phylogeny and population structure were reconstructed. The results revealed a phylogeographic structure within brown rot strains, allowing us to distinguish European outbreak strains of Andean and African origins. The pangenomic CGH data also demonstrated that Moko ecotype IIB-4 is phylogenetically distinct from the emerging IIB-4NPB strains. These findings improved our understanding of the epidemiology of important ecotypes in phylotype II and will be useful for evolutionary analyses and the development of new DNA-based diagnostic tools.

  4. Moko Disease-Causing Strains of Ralstonia solanacearum from Brazil Extend Known Diversity in Paraphyletic Phylotype II.

    Science.gov (United States)

    Albuquerque, Greecy M R; Santos, Liliana A; Felix, Kátia C S; Rollemberg, Christtianno L; Silva, Adriano M F; Souza, Elineide B; Cellier, Gilles; Prior, Philippe; Mariano, Rosa L R

    2014-11-01

    The epidemic situation of Moko disease-causing strains in Latin America and Brazil is unclear. Thirty-seven Ralstonia solanacearum strains from Brazil that cause the Moko disease on banana and heliconia plants were sampled and phylogenetically typed using the endoglucanase (egl) and DNA repair (mutS) genes according to the phylotype and sequevar classification. All of the strains belonged to phylotype II and a portion of the strains was typed as the Moko disease-related sequevars IIA-6 and IIA-24. Nevertheless, two unsuspected sequevars also harbored the Moko disease-causing strains IIA-41 and IIB-25, and a new sequevar was described and named IIA-53. All of the strains were pathogenic to banana and some of the strains of sequevars IIA-6, IIA-24, and IIA-41 were also pathogenic to tomato. The Moko disease-causing strains from sequevar IIB-25 were pathogenic to potato but not to tomato. These results highlight the high diversity of strains of Moko in Brazil, reinforce the efficiency of the egl gene to reveal relationships among these strains, and contribute to a better understanding of the diversity of paraphyletic Moko disease-causing strains of the R. solanacearum species complex, where the following seven distinct genetic clusters have been described: IIA-6, IIA-24, IIA-41, IIA-53, IIB-3, IIB-4, and IIB-25.

  5. Moko Disease-Causing Strains of Ralstonia solanacearum from Brazil Extend Known Diversity in Paraphyletic Phylotype II.

    Science.gov (United States)

    Albuquerque, Greecy M R; Santos, Liliana A; Felix, Kátia C S; Rollemberg, Christtianno L; Silva, Adriano M F; Souza, Elineide B; Cellier, Gilles; Prior, Philippe; Mariano, Rosa L R

    2014-11-01

    The epidemic situation of Moko disease-causing strains in Latin America and Brazil is unclear. Thirty-seven Ralstonia solanacearum strains from Brazil that cause the Moko disease on banana and heliconia plants were sampled and phylogenetically typed using the endoglucanase (egl) and DNA repair (mutS) genes according to the phylotype and sequevar classification. All of the strains belonged to phylotype II and a portion of the strains was typed as the Moko disease-related sequevars IIA-6 and IIA-24. Nevertheless, two unsuspected sequevars also harbored the Moko disease-causing strains IIA-41 and IIB-25, and a new sequevar was described and named IIA-53. All of the strains were pathogenic to banana and some of the strains of sequevars IIA-6, IIA-24, and IIA-41 were also pathogenic to tomato. The Moko disease-causing strains from sequevar IIB-25 were pathogenic to potato but not to tomato. These results highlight the high diversity of strains of Moko in Brazil, reinforce the efficiency of the egl gene to reveal relationships among these strains, and contribute to a better understanding of the diversity of paraphyletic Moko disease-causing strains of the R. solanacearum species complex, where the following seven distinct genetic clusters have been described: IIA-6, IIA-24, IIA-41, IIA-53, IIB-3, IIB-4, and IIB-25. PMID:24848276

  6. Phylogeny and population structure of brown rot- and Moko disease-causing strains of Ralstonia solanacearum phylotype II.

    Science.gov (United States)

    Cellier, G; Remenant, B; Chiroleu, F; Lefeuvre, P; Prior, P

    2012-04-01

    The ancient soilborne plant vascular pathogen Ralstonia solanacearum has evolved and adapted to cause severe damage in an unusually wide range of plants. In order to better describe and understand these adaptations, strains with very similar lifestyles and host specializations are grouped into ecotypes. We used comparative genomic hybridization (CGH) to investigate three particular ecotypes in the American phylotype II group: (i) brown rot strains from phylotypes IIB-1 and IIB-2, historically known as race 3 biovar 2 and clonal; (ii) new pathogenic variants from phylotype IIB-4NPB that lack pathogenicity for banana but can infect many other plant species; and (iii) Moko disease-causing strains from phylotypes IIB-3, IIB-4, and IIA-6, historically known as race 2, that cause wilt on banana, plantain, and Heliconia spp. We compared the genomes of 72 R. solanacearum strains, mainly from the three major ecotypes of phylotype II, using a newly developed pangenomic microarray to decipher their population structure and gain clues about the epidemiology of these ecotypes. Strain phylogeny and population structure were reconstructed. The results revealed a phylogeographic structure within brown rot strains, allowing us to distinguish European outbreak strains of Andean and African origins. The pangenomic CGH data also demonstrated that Moko ecotype IIB-4 is phylogenetically distinct from the emerging IIB-4NPB strains. These findings improved our understanding of the epidemiology of important ecotypes in phylotype II and will be useful for evolutionary analyses and the development of new DNA-based diagnostic tools. PMID:22286995

  7. Loop-mediated isothermal amplification of specific endoglucanase gene sequence for detection of the bacterial wilt pathogen Ralstonia solanacearum.

    Directory of Open Access Journals (Sweden)

    Rok Lenarčič

    Full Text Available The increased globalization of crops production and processing industries also promotes the side-effects of more rapid and efficient spread of plant pathogens. To prevent the associated economic losses, and particularly those related to bacterial diseases where their management relies on removal of the infected material from production, simple, easy-to-perform, rapid and cost-effective tests are needed. Loop-mediated isothermal amplification (LAMP assays that target 16S rRNA, fliC and egl genes were compared and evaluated as on-site applications. The assay with the best performance was that targeted to the egl gene, which shows high analytical specificity for diverse strains of the betaproteobacterium Ralstonia solanacearum, including its non-European and non-race 3 biovar 2 strains. The additional melting curve analysis provides confirmation of the test results. According to our extensive assessment, the egl LAMP assay requires minimum sample preparation (a few minutes of boiling for the identification of pure cultures and ooze from symptomatic material, and it can also be used in a high-throughput format in the laboratory. This provides sensitive and reliable detection of R. solanacearum strains of different phylotypes.

  8. Evaluation of the gene encoding the enzyme βHPMEH for the bacterial wilt inhibition caused by Ralstonia solanacearum

    Directory of Open Access Journals (Sweden)

    Elizabeth Fernandez

    2015-10-01

    Full Text Available Ralstonia solanacearum is the causal agent of the devastating bacterial wilt disease that attacks important agricultural crops such as potato, tomato, banana, among others, causing serious yield losses. Control of R. solanacearum is difficult because of its wide range of alternate hosts, its long survival in soil, its biological and genetic variation, the lack of natural resistance sources and the insufficiency of the appropriate chemical control measures. Quorum sensing is the term that describes the phenomenon whereby the accumulation of molecules allows bacteria to know the number of bacteria found in the environment (population density. R. solanacearum has a quorum sensing system for the regulation of the expression of virulence genes; the molecule 3-OH-PAME is the self-regulatory signal. The molecule ΒHPMEH hydrolyzes 3-OH-PAME nullifying the signal of virulence, and thus, the quorum sensing communication in R. solanacearum. In order to evaluate the βhpmeh gene we designed two vectors that express this gene under the control of two different promoters. Both vectors were verified by restriction analysis and sequencing. Agroinfiltration assays were used to analyze gene expression and the effect against R. solanacearum in potato (Solanum tuberosum leaves. The results of the transient expression experiments showed that the expression of gene βhpmeh caused a delay in the appearance of symptoms of bacterial wilt and thus is a good candidate for whole genetic plant transformation.

  9. Effect of the Medicinal Agaricus blazei Murill-Based Mushroom Extract, AndoSanTM, on Symptoms, Fatigue and Quality of Life in Patients with Crohn’s Disease in a Randomized Single-Blinded Placebo Controlled Study

    Science.gov (United States)

    Hetland, Geir; Lyberg, Torstein; Lygren, Idar; Johnson, Egil

    2016-01-01

    Background Ingestion of AndoSanTM, based on the mushroom Agaricus blazei Murill, has previously shown an anti-inflammatory effect through reduction of pro-inflammatory cytokines in healthy individuals and patients with Crohn’s disease (CD). In this randomized single-blinded placebo-controlled study we examined whether intake of AndoSanTM also resulted in clinical effects. Methods and Findings 50 patients with symptomatic CD were randomized for oral daily consumption of AndoSanTM or placebo for a 21-day experimental period, in this per-protocol study. Patients reported validated scores for symptoms, fatigue and health related quality of life (HRQoL) at days 0, 14 and 21. Fecal calprotectin and general blood parameters were also analyzed. In the AndoSanTM group (n = 25) symptoms improved from baseline (day 0) to days 14 and 21, with respective mean scores (95% CI) of 5.52 (4.64–6.40), 4.48 (3.69–5.27) and 4.08 (3.22–4.94) (p<0,001). We found significant improvements in symptom score for both genders in the AndoSanTM group, and no significant changes in the placebo (n = 25) group. There were however no significant differences between the groups (p = 0.106), although a marginal effect in symptom score for men (p = 0.054). There were comparable improvements in physical, mental and total fatigue for both groups. HRQoL versus baseline were at day 21 improved for bodily pain and vitality in the AndoSanTM group and for vitality and social functioning in the placebo group. No crucial changes in general blood samples and fecal calprotectin were detected. Conclusions The results from this single-blinded randomized clinical trial shows significant improvement on symptoms, for both genders, in the AndoSanTM group, but no significant differences between the study groups. The results on fatigue, HRQoL, fecal calprotectin and blood samples were quite similar compared with placebo. The patients did not report any harms or unintended effects of AndoSanTM. CD patients with

  10. Desempenho de cultivares de batata em solo infestado com Ralstonia solanacearum, raça 1 Performance of potato cultivars in soil naturally infested with race 1 of Ralstonia solanacearum

    Directory of Open Access Journals (Sweden)

    Alice Maria Quezado-Duval

    1999-11-01

    Full Text Available A reação de 28 cultivares de batata à murcha-bacteriana causada por Ralstonia (Pseudomonas solanacearum, raça 1, biovar I, foi avaliada na Embrapa Hortaliças, Brasília (DF, no período de maio a agosto de 1998. O ensaio foi realizado em solo naturalmente infestado, em blocos ao acaso com três repetições e parcelas de seis plantas perfazendo 2,4 m². As cultivares Cruza 148 e Achat (resistentes e Bintje (suscetível foram utilizadas como controles. Foram feitas oito avaliações semanais da incidência da doença, iniciando-se 22 dias após o plantio, quando apareceram os primeiros sintomas, para o cálculo da Área Abaixo da Curva de Progresso da Doença (AACPD. Utilizando-se a análise de agrupamento, foi possível a distinção de cinco grupos quanto aos níveis de resistência/suscetibilidade. As cultivares que apresentaram menores níveis de doença (grupo I: AACPD de 0,00 a 256,90 foram Cruza 148, Cruza 148 mutante, Araucária e Granola, que também tiveram as maiores produtividades comercial (tubérculos > 50mm de diâmetro e total (13,3 e 25,1 t/ha; 10,4 e 21,9 t/ha; 11,4 e 18,8 t/ha e 14,6 e 16,4 t/ha, respectivamente. Uma correlação significativa negativa (PTwenty-eight potato cultivars were evaluated for resistance to bacterial wilt caused by Ralstonia solanacearum, race 1, biovar I, from May to August, 1998, at Embrapa Hortaliças. The trial was carried out in a naturally infested field in a randomised complete block design with three replications and six plants per plot of 2.4 m². 'Cruza 148' and 'Achat' (resistant, and 'Bintje' (susceptible were used as controls. Disease incidence was assessed for eight weeks starting 22 days after planting, when the first symptoms were observed. The areas under the disease progress curves (AUDPC were calculated and the cluster analysis performed using the unweighted pair-group method by arithmetic averages (UPGMA and simple Euclidian distance coefficient. Five clusters of resistance

  11. Characterization of a Second tfd Gene Cluster for Chlorophenol and Chlorocatechol Metabolism on Plasmid pJP4 in Ralstonia eutropha JMP134(pJP4)

    OpenAIRE

    Laemmli, Caroline M.; Leveau, Johan H. J.; Zehnder, Alexander J. B.; van der Meer, Jan Roelof

    2000-01-01

    Within the 5.9-kb DNA region between the tfdR and tfdK genes on the 2,4-dichlorophenoxyacetic acid (2,4-D) catabolic plasmid pJP4 from Ralstonia eutropha JMP134, we identified five open reading frames (ORFs) with significant homology to the genes for chlorocatechol and chlorophenol metabolism (tfdCDEF and tfdB) already present elsewhere on pJP4. The five ORFs were organized and assigned as follows: tfdDIICIIEIIFII and tfdBII (in short, the tfdII cluster), by analogy to tfdCDEF and tfdB (the t...

  12. Efficient Turnover of Chlorocatechols Is Essential for Growth of Ralstonia eutropha JMP134(pJP4) in 3-Chlorobenzoic Acid

    OpenAIRE

    Pérez-Pantoja, D.; Ledger, T.; Pieper, D. H.; González, B.

    2003-01-01

    Ralstonia eutropha JMP134(pJP4) degrades 3-chlorobenzoate (3-CB) by using two not completely isofunctional, pJP4-encoded chlorocatechol degradation gene clusters, tfdCIDIEIFI and tfdDIICIIEIIFII. Introduction of several copies of each gene cluster into R. eutropha JMP222, which lacks pJP4 and thus accumulates chlorocatechols from 3-CB, allows the derivatives to grow in this substrate. However, JMP222 derivatives containing one chromosomal copy of each cluster did not grow in 3-CB. The failure...

  13. The tfdK Gene Product Facilitates Uptake of 2,4-Dichlorophenoxyacetate by Ralstonia eutropha JMP134(pJP4)

    OpenAIRE

    Leveau, Johan H. J.; Zehnder, Alexander J. B.; van der Meer, Jan Roelof

    1998-01-01

    Uptake of 2,4-dichlorophenoxyacetate (2,4-D) by Ralstonia eutropha JMP134(pJP4) was studied and shown to be an energy-dependent process. The uptake system was inducible with 2,4-D and followed saturation kinetics in a concentration range of up to 60 μM, implying the involvement of a protein in the transport process. We identified an open reading frame on plasmid pJP4, which was designated tfdK, whose translation product TfdK was highly hydrophobic and showed resemblance to transport proteins ...

  14. Eletromiografia do bíceps braquial em contrações dinâmicas

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    Lucenildo Silva Cerqueira

    2013-12-01

    Full Text Available INTRODUÇÃO: A reprodutibilidade da atividade eletromiográfica de superfície (EMG é mais estudada em protocolos que envolvem contrações isométricas. Alguns fatores relacionados às contrações dinâmicas podem contribuir para a instabilidade do sinal mioelétrico e dificultar a reprodutibilidade da medida da EMG. OBJETIVO: Determinar a reprodutibilidade teste-reteste e quantificar o erro técnico da medida da frequência mediana (FM e da amplitude (root mean square, RMS da EMG, em contrações dinâmicas e estáticas. MÉTODOS: Dez sujeitos foram testados em dois dias, sendo a atividade EMG registrada na maior porção do bíceps braquial. No primeiro dia foi feito o teste de uma repetição máxima (1RM e de contração voluntária máxima (CVM. No segundo dia foram realizadas duas séries de 10 contrações dos flexores do cotovelo com 75% de 1RM, entremeadas por 1 h em repouso. Antes de cada série foi realizada uma CVM. RESULTADOS: Para a FM e RMS foi observado alto coeficiente de correlação intraclasse para o sinal do bíceps braquial (CCI = 0,90-0,98 para a FM; CCI = 0,89-0,94 para o RMS e de baixo para moderado coeficiente de variação (CV = 2,5-6,2% para a FM; CV = 14,6-16,3% para o RMS em ambos os testes. Não foi observada diferença significativa entre teste e reteste (p > 0,05. CONCLUSÃO: A FM e o RMS apresentam alta confiabilidade e baixo a moderado erro em contrações estáticas e dinâmicas, possibilitando o uso da EMG para investigação da fadiga e de desordens neuromusculares.

  15. Production of fatty acids in Ralstonia eutropha H16 by engineering β-oxidation and carbon storage.

    Science.gov (United States)

    Chen, Janice S; Colón, Brendan; Dusel, Brendon; Ziesack, Marika; Way, Jeffrey C; Torella, Joseph P

    2015-01-01

    Ralstonia eutropha H16 is a facultatively autotrophic hydrogen-oxidizing bacterium capable of producing polyhydroxybutyrate (PHB)-based bioplastics. As PHB's physical properties may be improved by incorporation of medium-chain-length fatty acids (MCFAs), and MCFAs are valuable on their own as fuel and chemical intermediates, we engineered R. eutropha for MCFA production. Expression of UcFatB2, a medium-chain-length-specific acyl-ACP thioesterase, resulted in production of 14 mg/L laurate in wild-type R. eutropha. Total fatty acid production (22 mg/L) could be increased up to 2.5-fold by knocking out PHB synthesis, a major sink for acetyl-CoA, or by knocking out the acyl-CoA ligase fadD3, an entry point for fatty acids into β-oxidation. As ΔfadD3 mutants still consumed laurate, and because the R. eutropha genome is predicted to encode over 50 acyl-CoA ligases, we employed RNA-Seq to identify acyl-CoA ligases upregulated during growth on laurate. Knockouts of the three most highly upregulated acyl-CoA ligases increased fatty acid yield significantly, with one strain (ΔA2794) producing up to 62 mg/L free fatty acid. This study demonstrates that homologous β-oxidation systems can be rationally engineered to enhance fatty acid production, a strategy that may be employed to increase yield for a range of fuels, chemicals, and PHB derivatives in R. eutropha. PMID:26664804

  16. The Ectopic Expression of CaRop1 Modulates the Response of Tobacco Plants to Ralstonia solanacearum and Aphids.

    Science.gov (United States)

    Qiu, Ailian; Liu, Zhiqin; Li, Jiazhi; Chen, Yanshen; Guan, Deyi; He, Shuilin

    2016-01-01

    In plants, Rho-related GTPases (Rops) are versatile molecular switches that regulate various biological processes, although their exact roles are not fully understood. Herein, we provide evidence that the ectopic expression of a Rop derived from Capsicum annuum, designated CaRop1, in tobacco plants modulates the response of these plants to Ralstonia solanacearum or aphid attack. The deduced amino acid sequence of CaRop1 harbors a conserved Rho domain and is highly homologous to Rops of other plant species. Transient expression of a CaRop1-GFP fusion protein in Nicotiana benthamiana leaf epidermal cells revealed localization of the GFP signal to the plasma membrane, cytoplasm, and nucleus. Overexpression (OE) of the wild-type CaRop1 or its dominant-negative mutant (DN-CaRop1) conferred substantial resistance to R. solanacearum infection and aphid attack, and this effect was accompanied by enhanced transcriptional expression of the hypersensitive-reaction marker gene HSR201; the jasmonic acid (JA)-responsive PR1b and LOX1; the insect resistance-associated NtPI-I, NtPI-II, and NtTPI; the ethylene (ET) production-associated NtACS1; and NPK1, a mitogen-activated protein kinase kinase kinase (MAPKKK) that interferes with N-, Bs2-, and Rx-mediated disease resistance. In contrast, OE of the constitutively active mutant of CaRop1(CA-CaRop1) enhanced susceptibility of the transgenic tobacco plants to R. solanacearum infection and aphid attack and downregulated or sustained the expression of HSR201, PR1b, NPK1, NtACS1, NtPI-I, NtPI-II, and NtTPI. These results collectively suggest that CaRop1 acts as a signaling switch in the crosstalk between Solanaceaes's response to R. solanacearum infection and aphid attack possibly via JA/ET-mediated signaling machinery. PMID:27551287

  17. Optimal Medium Composition to Enhance Poly-β-hydroxybutyrate Production by Ralstonia eutropha Using Cane Molasses as Sole Carbon Source

    Directory of Open Access Journals (Sweden)

    Ali Bozorg

    2015-06-01

    Full Text Available In order to reduce the costs associated with Poly-β-hydroxybutyrate production, growth and Poly-β-hydroxybutyrate production of Ralstonia eutropha were studied in batch culture on different carbon sources. Experiments were designed and conducted to not only lower the cost of Poly-β-hydroxybutyrate production by using inexpensive substrates, but also to increase Poly-β-hydroxybutyrate production by optimizing the culture medium composition. Low cost, abundant carbon sources, including cane molasses, beet molasses, soya bean, and corn steep liquor were used to investigate the possibility of Poly-β-hydroxybutyrate production in such renewable carbon sources. Based on the experimental results, cane molasses with production of 0.49 g/L Poly-β-hydroxybutyrate was selected as the most efficient carbon source. To improve bacterial growth and Poly-β-hydroxybutyrate production, different chemicals were then used to pretreat the cane molasses. Sulfuric acid, with 33% enhancement in Poly-β-hydroxybutyrate production, revealed the highest efficiency in removing heavy metals and suspended impurities and was used to pretreat cane molasses in the subsequent experiments. Additionally, to make the process even more efficient and ultimately more effective, urea and corn steep liquor were used as nitrogen/minerals and vitamin sources, respectively. Using the Response Surface Methodology and through a 2n factorial Central Composite Design, the medium composition was then optimized, and maximum biomass concentration of 5.03 g/L and Poly-β-hydroxybutyrate concentration of 1.63 g/L were obtained.

  18. Escaping Underground Nets: Extracellular DNases Degrade Plant Extracellular Traps and Contribute to Virulence of the Plant Pathogenic Bacterium Ralstonia solanacearum.

    Science.gov (United States)

    Tran, Tuan Minh; MacIntyre, April; Hawes, Martha; Allen, Caitilyn

    2016-06-01

    Plant root border cells have been recently recognized as an important physical defense against soil-borne pathogens. Root border cells produce an extracellular matrix of protein, polysaccharide and DNA that functions like animal neutrophil extracellular traps to immobilize pathogens. Exposing pea root border cells to the root-infecting bacterial wilt pathogen Ralstonia solanacearum triggered release of DNA-containing extracellular traps in a flagellin-dependent manner. These traps rapidly immobilized the pathogen and killed some cells, but most of the entangled bacteria eventually escaped. The R. solanacearum genome encodes two putative extracellular DNases (exDNases) that are expressed during pathogenesis, suggesting that these exDNases contribute to bacterial virulence by enabling the bacterium to degrade and escape root border cell traps. We tested this hypothesis with R. solanacearum deletion mutants lacking one or both of these nucleases, named NucA and NucB. Functional studies with purified proteins revealed that NucA and NucB are non-specific endonucleases and that NucA is membrane-associated and cation-dependent. Single ΔnucA and ΔnucB mutants and the ΔnucA/B double mutant all had reduced virulence on wilt-susceptible tomato plants in a naturalistic soil-soak inoculation assay. The ΔnucA/B mutant was out-competed by the wild-type strain in planta and was less able to stunt root growth or colonize plant stems. Further, the double nuclease mutant could not escape from root border cells in vitro and was defective in attachment to pea roots. Taken together, these results demonstrate that extracellular DNases are novel virulence factors that help R. solanacearum successfully overcome plant defenses to infect plant roots and cause bacterial wilt disease. PMID:27336156

  19. Effect of Seed Treatment by Cold Plasma on the Resistance of Tomato to Ralstonia solanacearum (Bacterial Wilt)

    Science.gov (United States)

    Jiang, Jiafeng; Lu, Yufang; Li, Jiangang; Li, Ling; He, Xin; Shao, Hanliang; Dong, Yuanhua

    2014-01-01

    This study investigated the effect of cold plasma seed treatment on tomato bacterial wilt, caused by Ralstonia solanacearum (R. solanacearum), and the regulation of resistance mechanisms. The effect of cold plasma of 80W on seed germination, plant growth, nutrient uptake, disease severity, hydrogen peroxide (H2O2) concentration and activities of peroxidase (POD; EC 1.11.1.7), polyphenol oxidase (PPO; EC 1.10.3.2) and phenylalanine ammonia lyase (PAL; EC 4.3.1.5) were examined in tomato plants. Plasma treatment increased tomato resistance to R. solanacearum with an efficacy of 25.0%. Plasma treatment significantly increased both germination and plant growth in comparison with the control treatment, and plasma-treated plants absorbed more calcium and boron than the controls. In addition, H2O2 levels in treated plants rose faster and reached a higher peak, at 2.579 µM gFW−1, 140% greater than that of the control. Activities of POD (421.3 U gFW−1), PPO (508.8 U gFW−1) and PAL (707.3 U gFW−1) were also greater in the treated plants than in the controls (103.0 U gFW−1, 166.0 U gFW−1 and 309.4 U gFW−1, respectively). These results suggest that plasma treatment affects the regulation of plant growth, H2O2 concentration, and POD, PPO and PAL activity in tomato, resulting in an improved resistance to R. solanacearum. Consequently, cold plasma seed treatment has the potential to control tomato bacterial wilt caused by R. solanacearum. PMID:24840508

  20. Escaping Underground Nets: Extracellular DNases Degrade Plant Extracellular Traps and Contribute to Virulence of the Plant Pathogenic Bacterium Ralstonia solanacearum.

    Science.gov (United States)

    Tran, Tuan Minh; MacIntyre, April; Hawes, Martha; Allen, Caitilyn

    2016-06-01

    Plant root border cells have been recently recognized as an important physical defense against soil-borne pathogens. Root border cells produce an extracellular matrix of protein, polysaccharide and DNA that functions like animal neutrophil extracellular traps to immobilize pathogens. Exposing pea root border cells to the root-infecting bacterial wilt pathogen Ralstonia solanacearum triggered release of DNA-containing extracellular traps in a flagellin-dependent manner. These traps rapidly immobilized the pathogen and killed some cells, but most of the entangled bacteria eventually escaped. The R. solanacearum genome encodes two putative extracellular DNases (exDNases) that are expressed during pathogenesis, suggesting that these exDNases contribute to bacterial virulence by enabling the bacterium to degrade and escape root border cell traps. We tested this hypothesis with R. solanacearum deletion mutants lacking one or both of these nucleases, named NucA and NucB. Functional studies with purified proteins revealed that NucA and NucB are non-specific endonucleases and that NucA is membrane-associated and cation-dependent. Single ΔnucA and ΔnucB mutants and the ΔnucA/B double mutant all had reduced virulence on wilt-susceptible tomato plants in a naturalistic soil-soak inoculation assay. The ΔnucA/B mutant was out-competed by the wild-type strain in planta and was less able to stunt root growth or colonize plant stems. Further, the double nuclease mutant could not escape from root border cells in vitro and was defective in attachment to pea roots. Taken together, these results demonstrate that extracellular DNases are novel virulence factors that help R. solanacearum successfully overcome plant defenses to infect plant roots and cause bacterial wilt disease.

  1. Escaping Underground Nets: Extracellular DNases Degrade Plant Extracellular Traps and Contribute to Virulence of the Plant Pathogenic Bacterium Ralstonia solanacearum.

    Directory of Open Access Journals (Sweden)

    Tuan Minh Tran

    2016-06-01

    Full Text Available Plant root border cells have been recently recognized as an important physical defense against soil-borne pathogens. Root border cells produce an extracellular matrix of protein, polysaccharide and DNA that functions like animal neutrophil extracellular traps to immobilize pathogens. Exposing pea root border cells to the root-infecting bacterial wilt pathogen Ralstonia solanacearum triggered release of DNA-containing extracellular traps in a flagellin-dependent manner. These traps rapidly immobilized the pathogen and killed some cells, but most of the entangled bacteria eventually escaped. The R. solanacearum genome encodes two putative extracellular DNases (exDNases that are expressed during pathogenesis, suggesting that these exDNases contribute to bacterial virulence by enabling the bacterium to degrade and escape root border cell traps. We tested this hypothesis with R. solanacearum deletion mutants lacking one or both of these nucleases, named NucA and NucB. Functional studies with purified proteins revealed that NucA and NucB are non-specific endonucleases and that NucA is membrane-associated and cation-dependent. Single ΔnucA and ΔnucB mutants and the ΔnucA/B double mutant all had reduced virulence on wilt-susceptible tomato plants in a naturalistic soil-soak inoculation assay. The ΔnucA/B mutant was out-competed by the wild-type strain in planta and was less able to stunt root growth or colonize plant stems. Further, the double nuclease mutant could not escape from root border cells in vitro and was defective in attachment to pea roots. Taken together, these results demonstrate that extracellular DNases are novel virulence factors that help R. solanacearum successfully overcome plant defenses to infect plant roots and cause bacterial wilt disease.

  2. Expression of a wheat MYB gene in transgenic tobacco enhances resistance to Ralstonia solanacearum, and to drought and salt stresses.

    Science.gov (United States)

    Liu, Hongxia; Zhou, Xianyao; Dong, Na; Liu, Xin; Zhang, Huaiyu; Zhang, Zengyan

    2011-09-01

    MYB transcription factors play diverse roles in plant growth, developmental processes and stress responses. A full-length cDNA sequence of a MYB gene, namely TaPIMP1, was isolated from wheat (Triticum aestivum L.). The TaPIMP1 transcript level was significantly up-regulated by inoculation with a fungal pathogen Bipolaris sorokiniana and by drought treatment. TaPIMP1 encodes the MYB protein TaPIMP1 consisting of 323 amino acids. TaPIMP1 contains two MYB DNA binding domains (R2, R3), two putative nuclear localization sites and two putative transcription activation domains. TaPIMP1 is a new member of the R2R3-MYB transcription factor subfamily. Transient expression in onion epidermal cells of GFP fused with TaPIMP1 proved that subcellular localization of TaPIMP1 occurred in the nucleus. The TaPIMP1 gene was transferred into tobacco (Nicotiana tabacum L.) cultivar W38 by Agrobacterium-mediated transformation. After screening through PCR and RT-PCR analyses, transgenic tobacco lines expressing TaPIMP1 were identified and evaluated for pathogen resistance, and drought and salt tolerance. Compared to untransformed tobacco host plants, TaPIMP1 expressing plants displayed significantly enhanced resistance to Ralstonia solanacearum and exhibited improved tolerances to drought and salt stresses. In these transgenic lines, the activities of phenylalanine ammonia-lyase (PAL) and superoxide dismutase (SOD) were significantly increased relative to wild-type tobacco plants. The results suggested that the wheat R2R3-MYB transcription factor plays an important role in modulating responses to biotic and abiotic stresses.

  3. Root-associated bacterial endophytes from Ralstonia solanacearum resistant and susceptible tomato cultivars and their pathogen antagonistic effects

    Directory of Open Access Journals (Sweden)

    Reshmi eUpreti

    2015-04-01

    Full Text Available This study was undertaken to assess if the root-associated native bacterial endophytes in tomato have any bearing in governing the host resistance to the wilt pathogen Ralstonia solanacearum. Internal colonization of roots by bacterial endophytes was confirmed through confocal imaging after SYTO-9 staining. Endophytes were isolated from surface-sterilized roots of 4-week old seedlings of known wilt resistant (R tomato cultivar Arka Abha and susceptible (S cv. Arka Vikas on nutrient agar after plating the tissue homogenate. Arka Abha displayed more diversity with nine distinct organisms while Arka Vikas showed five species with two common organisms (Pseudomonas oleovorans and Agrobacterium tumefaciens. Screening for general indicators of biocontrol potential showed more isolates from Arka Abha positive for siderophore, HCN and antibiotic biosynthesis than from Arka Vikas. Direct challenge against the pathogen indicated strong antagonism by three Arka Abha isolates (P. oleovorans, Pantoea ananatis and Enterobacter cloacae and moderate activity by three others, while just one isolate from Arka Vikas (P. oleovorans showed strong antagonism. Validation for the presence of bacterial endophytes on three R cultivars (Arka Alok, Arka Ananya, Arka Samrat showed 8-9 antagonistic bacteria in them in comparison with four species in the three S cultivars (Arka Ashish, Arka Meghali, Arka Saurabhav. Altogether 34 isolates belonging to five classes, 16 genera and 27 species with 23 of them exhibiting pathogen antagonism were isolated from the four R cultivars against 17 isolates under three classes, seven genera and 13 species from the four S cultivars with eight isolates displaying antagonistic effects. The prevalence of higher endophytic bacterial diversity and more antagonistic organisms associated with the seedling roots of resistant cultivars over susceptible genotypes suggest a possible role by the root-associated endophytes in natural defense against the

  4. Digital database of microfossil localities in Alameda and Contra Costa Counties, California

    Science.gov (United States)

    McDougall, Kristin; Block, Debra

    2014-01-01

    The eastern San Francisco Bay region (Contra Costa and Alameda Counties, California) is a geologically complex area divided by faults into a suite of tectonic blocks. Each block contains a unique stratigraphic sequence of Tertiary sediments that in most blocks unconformably overlie Mesozoic sediments. Age and environmental interpretations based on analysis of microfossil assemblages are key factors in interpreting geologic history, structure, and correlation of each block. Much of this data, however, is distributed in unpublished internal reports and memos, and is generally unavailable to the geologic community. In this report the U.S. Geological Survey microfossil data from the Tertiary sediments of Alameda and Contra Costa counties are analyzed and presented in a digital database, which provides a user-friendly summary of the micropaleontologic data, locality information, and biostratigraphic and ecologic interpretations.

  5. La violencia contra la mujer y los derechos sexuales y reproductivos

    Directory of Open Access Journals (Sweden)

    Violeta Bermúdez Valdivia

    2008-12-01

    Full Text Available El presente artículo formula algunas reflexiones en torno a las intersecciones que existen entre la violencia contra la mujer y los derechos sexuales y reproductivos, desde un enfoque de derechos humanos. A tal efecto, analiza tres manifestaciones de violencia contra la mujer: la violencia sexual en el matrimonio, prácticas compulsivas de control reproductivo y la violación sexual como crimen de lesa humanidad. Todas ellas, implican una vulneración directa de sus derechos sexuales y reproductivos y proponen algunas experiencias positivas que pueden servir de pauta orientadora para el diseño de políticas públicas sobre la materia.

  6. Programa de acción nacional contra la desertificación

    OpenAIRE

    García Camarero, Julio

    2001-01-01

    La Dirección General de Conservación de la Naturaleza del Ministerio de Medio Ambiente español elabora desde hace siete años el programa de acción nacional contra la desertificación (PAND). Este Programa es consecuencia de la ratificación por parte del Estado español de los acuerdos de la cumbre de Río o de la Tierra de 1992, plasmados en el Convenio Mundial de lucha contra la desertificación de 1994. La Dirección General envió en enero de 2001 el documento en elaboración del PAND a diversas ...

  7. Pressure Measurement on Casing Wall and Blade Rows Interaction of Contra-Rotating Axial Flow Pump

    Institute of Scientific and Technical Information of China (English)

    Toru SHIGEMITSU; Tomoya TAKANO; Akinori FURUKAWA; Kusuo OKUMA; Satoshi WATANABE

    2005-01-01

    @@ An application of contra-rotating rotors has been proposed against a demand for developing higher specific speed axial flow pump. The blade rows interaction between front and rear rotors should be clarified for its stable operation and reduction of unsteady losses. In this paper, the static pressure distributions on casing wall are provided by measuring with the phase locked sampling method. The measurements are carried out for two types of the rear rotors with different blade number and chord length, and it is found that, for both types of rotors, the unsteady pressure fluctuations are more remarkable in the front rotor than in the rear rotor and they are caused by the rear rotor pressure field. The effects of pressure fluctuations will be discussed in more details toward understanding the blade rows interaction in the contra-rotating axial flow pump.

  8. Movilización social contra la violencia política: sus determinantes

    Directory of Open Access Journals (Sweden)

    J.M. Sabucedo

    2000-01-01

    Full Text Available Se presenta un análisis de las principales causas de la movilización social que se llevó a cabo en España en julio de 1997 como protesta contra el acto criminal cometido por ETA contra Miguel Ángel Blanco, un concejal del Partido Popular. La movilización social se basó en dos elementos: las creencias previas que deslegitimaban la violencia y apelaban a la movilización ciudadana, y el papel de los medios masivos de comunicación y otros agentes sociales que convirtieron el acto criminal en un tema de gran significación cognitiva para los ciudadanos.

  9. Ciberativismo: a guerra da WikiLeaks contra os segredos de Estado

    Directory of Open Access Journals (Sweden)

    Carole Ferreira da Cruz

    2012-12-01

    Full Text Available http://dx.doi.org/10.5007/1806-5023.2012v9n1p90 Resenha do livro WikiLeaks: a guerra de Julian Assange contra os Segredos de Estado (Editora Verus, 2011, 336 p., no qual os repórteres investigativos do The Guardian, David Leigh e Luke Harding, contam os bastidores do maior vazamento da história, que revelou ao mundo detalhes obscuros da diplomacia mundial e das guerras do Afeganistão e do Iraque. A partir da análise do livro-reportagem sobre a organização WikliLeaks, pretendemos refletir sobre os mecanismos de resistência e atuação contra-hegemônica no contexto das redes abertas pelas tecnologias digitais.

  10. Perspectiva psicosocial en adolescentes acusados por delitos contra la salud y robo

    Directory of Open Access Journals (Sweden)

    José Guadalupe Salazar Estrada

    2009-01-01

    Full Text Available Nuestro objetivo en este estudio es identificar condiciones de vida de los sujetos adolescentes acusados de cometer delitos contra la salud y robo, desde una perspectiva psicosocial. Se estudiaron un total de 122 expedientes, de los cuales el 50% son acusados y acusadas por delitos contra la salud, y el otro 50% por robo; el 70% de los hombres y el 68.2% de las mujeres han consumido un tipo drogas, un 66 % del total de la muestra presentó poca tolerancia a la frustración, el 60 % tiene un manejo inadecuado de la afectividad, con una diferencia significativa cuando se estudia por tipo de delito. Entre las diferencias encontradas, las condiciones psicológicas como la personalidad, están más asociadas a la delincuencia juvenil.

  11. Análisis de un movimiento social femenino contra el hambre y la miseria

    Directory of Open Access Journals (Sweden)

    Silvia Alejandra Navarro

    2007-07-01

    Full Text Available El presente trabajo pretendió analizar la emergencia de un movimiento social femenino de defensa contra el hambre y la miseria a través de diferentes conceptos teóricos, particularmente tomados de autores como De Ipola, Jelin y Evers. El eje central del ensayo es la acción colectiva de un grupo de mujeres que abrieron un comedor comunitario para satisfacer las necesidades básicas alimentarias del barrio.

  12. Performance Test and Flow Measurement of Contra-Rotating Axial Flow Pump

    Institute of Scientific and Technical Information of China (English)

    Akinori Furukawa; Toru Shigemitsu; Satoshi Watanabe

    2007-01-01

    An application of contra-rotating rotors has been proposed against a demand for developing higher specific speed axial flow pump. In the present paper, the advantage and disadvantage of using contra-rotating rotors are described in comparison with conventional type of rotor-stator, based on theoretical and experimental investigations. The advantages are as follows: (1) The pump is inherently designed as smaller sized and at lower rotational speed. (2) A stable head-characteristic curve for flow rate with negative slope appears. (3)As the rear rotor rotational speed is varied as independent control of front rotor, the wider range of high performance operation is obtained by rear rotor speed control in addition to front rotor speed control. The disadvantages are as follows: (1) The structure of double shaft system becomes complex. (2) The pump performance is inferior at over flow rate as the rear rotor loading is weakened. (3) The blade rows interaction from rear rotor to front rotor more strongly appears. Then the rear rotor design is a key to achieve higher pump performance. Some methods to overcome these disadvantages will be discussed in more details toward wider usage of contra-rotating axial flow pump in various industrial fields.

  13. Efficient biological conversion of carbon monoxide (CO) to carbon dioxide (CO2) and for utilization in bioplastic production by Ralstonia eutropha through the display of an enzyme complex on the cell surface.

    Science.gov (United States)

    Hyeon, Jeong Eun; Kim, Seung Wook; Park, Chulhwan; Han, Sung Ok

    2015-06-25

    An enzyme complex for biological conversion of CO to CO2 was anchored on the cell surface of the CO2-utilizing Ralstonia eutropha and successfully resulted in a 3.3-fold increase in conversion efficiency. These results suggest that this complexed system may be a promising strategy for CO2 utilization as a biological tool for the production of bioplastics. PMID:26017299

  14. Effects of environmental parameters on the dual-species biofilms formed by Escherichia coli O157:H7 and Ralstonia insidiosa, a strong biofilm producer isolated from a fresh-cut processing plant

    Science.gov (United States)

    Biofilm forming bacteria resident to food processing facilities are a food safety concern due to the potential of biofilms to harbor foodborne bacterial pathogens. When cultured together, Ralstonia insidiosa, a strong biofilm former frequently isolated from produce processing environments, has been ...

  15. Efficient biological conversion of carbon monoxide (CO) to carbon dioxide (CO2) and for utilization in bioplastic production by Ralstonia eutropha through the display of an enzyme complex on the cell surface.

    Science.gov (United States)

    Hyeon, Jeong Eun; Kim, Seung Wook; Park, Chulhwan; Han, Sung Ok

    2015-06-25

    An enzyme complex for biological conversion of CO to CO2 was anchored on the cell surface of the CO2-utilizing Ralstonia eutropha and successfully resulted in a 3.3-fold increase in conversion efficiency. These results suggest that this complexed system may be a promising strategy for CO2 utilization as a biological tool for the production of bioplastics.

  16. Impact of Ralstonia eutropha's poly(3-Hydroxybutyrate) (PHB) Depolymerases and Phasins on PHB storage in recombinant Escherichia coli.

    Science.gov (United States)

    Eggers, Jessica; Steinbüchel, Alexander

    2014-12-01

    The model organism for polyhydroxybutyrate (PHB) biosynthesis, Ralstonia eutropha H16, possesses multiple isoenzymes of granules coating phasins as well as of PHB depolymerases, which degrade accumulated PHB under conditions of carbon limitation. In this study, recombinant Escherichia coli BL21(DE3) strains were used to study the impact of selected PHB depolymerases of R. eutropha H16 on the growth behavior and on the amount of accumulated PHB in the absence or presence of phasins. For this purpose, 20 recombinant E. coli BL21(DE3) strains were constructed, which harbored a plasmid carrying the phaCAB operon from R. eutropha H16 to ensure PHB synthesis and a second plasmid carrying different combinations of the genes encoding a phasin and a PHB depolymerase from R. eutropha H16. It is shown in this study that the growth behavior of the respective recombinant E. coli strains was barely affected by the overexpression of the phasin and PHB depolymerase genes. However, the impact on the PHB contents was significantly greater. The strains expressing the genes of the PHB depolymerases PhaZ1, PhaZ2, PhaZ3, and PhaZ7 showed 35% to 94% lower PHB contents after 30 h of cultivation than the control strain. The strain harboring phaZ7 reached by far the lowest content of accumulated PHB (only 2.0% [wt/wt] PHB of cell dry weight). Furthermore, coexpression of phasins in addition to the PHB depolymerases influenced the amount of PHB stored in cells of the respective strains. It was shown that the phasins PhaP1, PhaP2, and PhaP4 are not substitutable without an impact on the amount of stored PHB. In particular, the phasins PhaP2 and PhaP4 seemed to limit the degradation of PHB by the PHB depolymerases PhaZ2, PhaZ3, and PhaZ7, whereas almost no influence of the different phasins was observed if phaZ1 was coexpressed. This study represents an extensive analysis of the impact of PHB depolymerases and phasins on PHB accumulation and provides a deeper insight into the complex interplay

  17. Stable Carbon Isotope Discrimination by Form IC Rubisco Enzymes of the Extremely Metabolically Versatile Rhodobacter sphaeroides and Ralstonia eutropha}

    Science.gov (United States)

    Thomas, P. J.; Boller, A. J.; Zhao, Z.; Tabita, F. R.; Cavanaugh, C. M.; Scott, K. M.

    2006-12-01

    Variations in the relative amounts of 12C and 13C in microbial biomass can be used to infer the pathway(s) autotrophs use to fix and assimilate dissolved inorganic carbon. Discrimination against 13C by the enzymes catalyzing autotrophic carbon fixation is a major factor dictating biomass stable carbon isotopic compositions (δ13C = {[13C/12Csample/13C/12Cstandard] - 1} × 1000). Five different forms of RubisCO (IA, IB, IC, ID, and II) are utilized by algae and autotrophic bacteria reliant on the Calvin-Benson cycle for carbon fixation. To date, isotope discrimination has been measured for form IA, IB, and II RubisCOs, and their ɛ values (={[12k/13k] - 1} × 1000; 12k and 13k = rates of 12C and 13C fixation) range from 18 to 29‰, explaining the variation in biomass δ13C values of autotrophs utilizing these enzymes. Isotope discrimination by form IC RubisCO has not been measured, despite the presence of this enzyme in many proteobacteria of ecological interest, including marine manganese-oxidizing bacteria, some nitrifying and nitrogen-fixing bacteria, and extremely metabolically versatile organisms such as Rhodobacter sphaeroides and Ralstonia eutropha. The purpose of this work was to determine the ɛ values for form IC RubisCO enzymes from R. sphaeroides and R. eutropha. Recombinant form IC RubisCOs were purified by conventional column chromatography procedures. Assay conditions (pH, dissolved inorganic carbon concentration) were tested to determine which parameters were conducive to the high rates of carbon fixation necessary for ɛ determination. Under standard conditions (pH 8.5 and 5 mM DIC), form IC RubisCO activities were sufficient for ɛ determination. Experiments are currently being conducted to measure the ɛ values of these enzymes. Sampling the full phylogenetic breadth of RubisCO enzymes for isotopic discrimination makes it possible to constrain the range of δ13C values of organisms fixing carbon via the Calvin-Benson cycle. These results are

  18. Evaluación y evidencia para la vacunación contra rotavirus y vacunación contra Streptococcus pneumonia en Costa Rica

    Directory of Open Access Journals (Sweden)

    Ricardo Morales Vargas

    2006-12-01

    Full Text Available Se evaluaron y compararon dos posibles intervenciones en salud pública para ser aplicadas en Costa Rica: a vacunación contra el rotavirus y b vacunación contra el Streptococcus pneumonia. Se utilizó la técnica de revisión de la literatura impresa y electrónica usando como marco de referencia para la evaluación las recomendaciones de la International Network of Agencies of Health Care Technology Assessment -(INHATA y las recomendaciones de la OPS/OMS sobre evaluación de tecnologías sanitarias para países en desarrollo. Se utilizaron los criterios de seguridad, eficacia, efectividad, utilidad y costo-beneficio de ambas intervenciones, así como su impacto organizacional, ético y social. Se escogieron como grupos en riesgo las personas menores de 5 años y los mayores de 65 años. Se emplearon datos económicos publicados por otros autores sobre costos sanitarios y los precios de mercado para las vacunas. Considerando los aspectos anteriores, así como la calidad y amplitud de la literatura sobre ambas intervenciones, se concluye que la intervención contra el rotavirus podría ser una intervención de mayor impacto en cuanto a número de casos evitables en Costa Rica, por lo que se recomienda realizar estudios nacionales de Fase III para evaluar su efectividad. Si bien la intervención contra el Streptococcus pneumonia (C/B =2,4 es una intervención más favorable económicamente que la del rotavirus (C/B =2,7 en términos de costo/beneficio en el mediano y largo plazo, esta conclusión se revertiría si sólo se consideran los costos anuales luego del primer año. Resultados de la evaluación global, utilizando los criterios anteriores, propuesta por el autor, favorece la intervención ante el rotavirus.Two posible health interventions were evaluated and compared for application in Costa Rica: a vaccination against Rotavirus, and b vaccination against Streptococcus pneumonia. Analysis of existing printed and electronic literature was

  19. Violência contra os idosos: análise documental Violencia contra los ancianos: análisis documental Violence against the aged: documental analysis

    Directory of Open Access Journals (Sweden)

    Jacy Aurélia Vieira de Souza

    2007-06-01

    Full Text Available O objetivo do estudo foi analisar os dados de violência e maus-tratos contra os idosos por meio de documentos oficiais, em Fortaleza-CE. Estudo retrospectivo, documental realizada em uma instituição de referência do Ceará, oficializada em denúncias de violência contra idosos. A coleta de dados ocorreu no primeiro semestre de 2005. Dos 424 documentos analisados, 284(67% identificou-se como abandono dos idosos. Quanto ao agressor, 207(49% era filho da vítima. Dentre os casos de violências, 161 (38% foi negligência, seguido por apropriação indébita de aposentadoria, 114 (27%; agressão verbal, 79(19% e física 68(16%. Tais eventos foram registrados por meio de denúncias, principalmente, ao serviço Alô-Idoso, 306(77%. Pôde-se verificar a importância de serviços voltados para essa questão, porém torna-se fundamental que políticas públicas enfoquem o papel social do idoso e privilegiem o cuidado e a proteção dessa parcela populacional em suas famílias e instituições.Lo estudio tuvo como objetivo analizar los datos sobre violencia contra los ancianos en la contexto familiar. Se realizó un estudio documental retrospectivo en una institución de referencia de Ceará, con oficialización en reclamaciones de violencia contra los ancianos. Se coletaron los datos en enero a julio de 2005. Se compilaron 424 datos. Se constató que 284 (67%, caso de violencia ocurrieron a los ancianos de sexo femenino. Con relación a los agresores, 207 (49%, eran hijos de las víctimas. Entre los tipos de violencia, 161(38% son negligencia, 114 (27%, la apropiación indebida de lo jubilación; la agresión verbal, 79 (19%, y la agresión físico, 68 (16%. Se ha podido identificar la importancia de servicio a cerca de la cuestión, no obstante, se resulta fundamental que políticas públicas de ese porcentaje de la población proyecten la función social del anciano, a sí convalorar el cuidado y la protección de ese porcentaje poblacional en sus

  20. Reforma ou contra-reforma na proteção social à saúde Reform or contra-reform in health policy

    Directory of Open Access Journals (Sweden)

    Paulo Eduardo Elias

    1997-08-01

    Full Text Available Discutem-se as mudanças no sistema de saúde brasileiro em período recente da ótica das políticas sociais. A partir do enunciado da exclusão social como questão central a ser enfrentada pelas políticas sociais e da noção de contra-reforma em oposição à reforma virtuosa e necessária do Estado, analisam-se as políticas de saúde, privilegiando a denominada Reforma Sanitária e a implementação do SUS. O artigo sustenta a exigência de se promover a articulação das reformas do sistema de saúde com as políticas econômicas de modo a apontar para um novo padrão de desenvolvimento, com sólidas bases sociais e orientado ética e politicamente para a inclusão.Changes in the Brazilian health system are discussed from the point of view of social policies. Taking social exclusion as the central question to be faced by social policies and contra-reform as the opposite of the virtuous and necessary reform of the State, the article analyzes Brazilian health policies, chiefly regarding the so-called Sanitary Reform and the National Health Service (SUS. It is argued that the articulation between the reforms of the health system and economic policies should be promoted having in view a new development pattern, with strong social foundations and ethically and politically oriented towards social inclusion.

  1. Is seeking bad mood cognitively demanding? Contra-hedonic orientation and working-memory capacity in everyday life.

    Science.gov (United States)

    Riediger, Michaela; Wrzus, Cornelia; Schmiedek, Florian; Wagner, Gert G; Lindenberger, Ulman

    2011-06-01

    Hedonism, or wanting to feel good, is central to human motivation. At times, however, people also seek to maintain or enhance negative affect or to dampen positive affect, and this can be instrumental for the later attainment of their goals. Here, we investigate the assumption that such contra-hedonic orientation is cognitively more demanding than prohedonic orientation, above and beyond the effects of momentary affective experience. We provided 378 participants with mobile phones that they carried with them for 3 weeks while pursuing their daily routines. The phones prompted participants at least 54 times to report their current affect-regulation orientation and to work on two trials of a cognitively demanding working memory task. As expected, contra-hedonic orientation was substantially less prevalent than prohedonic orientation. It was reported in 15% of the measurement occasions. Participants who reported on average more contra-hedonic orientation showed lower average working memory performance throughout the study interval. Further, controlling for the effects of accompanying affective experiences, momentary occurrences of contra-hedonic orientation were associated with temporary declines in working memory performance within individuals, and this could neither be explained by lacking task compliance nor by other characteristics of the individual or the situation. Prohedonic orientation showed a considerably smaller association with working memory performance. These findings are consistent with the view that contra-hedonic orientation is accompanied by momentarily more diminished cognitive resources than is prohedonic orientation.

  2. Asociación entre enfermedad cardiovascular y anticuerpos contra Chlamydia pneumoniae

    Directory of Open Access Journals (Sweden)

    García-Elorriaga Guadalupe de los A

    2002-01-01

    Full Text Available Objetivo. Precisar si existe asociación entre enfermedad cardiovascular (ECV y anticuerpos contra Chlamydia en población mexicana. Material y métodos. Estudio transversal, realizado en la Unidad de Investigación en Inmunología e Infectología -Hospital de Infectología del Centro Médico Nacional La Raza (CMNR- y en el Servicio de Cirugía Cardiovascular y Asistencia Circulatoria, del Hospital General del CMNR, Instituto Mexicano del Seguro Social (IMSS, de agosto de 1998 a abril de 2000. Se determinaron anticuerpos IgG e IgM contra C. psittaci, C. trachomatis y C. pneumoniae mediante microinmunofluorescencia, en suero de 70 pacientes con ECV hospitalizados en el CMNR, mayores de 30 años, de uno u otro sexo, y se compararon con 140 sanos, pareados por edad y sexo. Se utilizaron muestras aleatorias simples, con un tamaño poblacional de 110, una prevalencia de 50% y un nivel de confianza de 99%. Para establecer la diferencia entre las proporciones de los títulos se utilizó ji cuadrada y se calculó la razón de momios. Resultados. El 94.3% (66/70 de los pacientes presentó IgG en contra de C. pneumoniae vs 37% (52/140 de los individuos sanos (p<0.001. Conclusiones. Existe una fuerte asociación entre anticuerpos IgG hacia C. pneumoniae y ECV.

  3. Programa Daphne Stop WI.E.W. Contra la violencia hacia las mujeres mayores

    Directory of Open Access Journals (Sweden)

    Carmen Sánchez-Moro

    2013-12-01

    Full Text Available El articulo hace referencia al desarrollo del Proyecto Europeo Daphne: "Stop VI.E.W. Violence against Elderly Women", cuyo objetivo general es visibilizar la problemática de los malos tratos y violencia contra las mujeres mayores y las consecuencias del fenómeno, y ayudar a crear más conciencia y sensibilidad acerca de las necesidades y dificultades de las mujers mayores, para proveerles mayor protección en las situaciones de abuso y promover acciones preventivas frente a las situaciones de riesgo.

  4. Violencia doméstica y contra las mujeres en las novelas de Charles Dickens

    OpenAIRE

    Andino Lucas, Eugenia

    2016-01-01

    La presente tesis es un estudio panorámico del modo en el que las novelas de Charles Dickens tratan la violencia de género, entendida como violencia contra la mujer por su pareja o ex-pareja, y la violencia sexual. También se tratan los casos menos frecuentes en los que las agresoras son personajes femeninos, para dar una visión de conjunto de la violencia en la pareja en la obra del autor. Se parte de un análisis de los roles sociales victorianos del hombre y la mujer que tenían un marcado c...

  5. Aerodynamic performance of contra-rotating Wells turbine for wave energy conversion

    Energy Technology Data Exchange (ETDEWEB)

    Raghunathan, S.; Beattie, W.C. [Queen`s Univ., Belfast (United Kingdom)

    1995-12-31

    The wave energy devices currently being built in United Kingdom and elsewhere have adopted the Wells air turbine for converting pneumatic energy in the device to mechanical energy of rotation. A monoplane (single plane) Wells turbine can absorb only a certain maximum pneumatic pressure amplitude due to tip speed limitations. For wave energy devices which produce large pneumatic pressure amplitudes a biplane Wells turbine with or without guide vanes can be used. An alternative to a biplane is a contra-rotating rotor. The aerodynamic performance and control of such a rotor are discussed.

  6. Protección contra incendios de un almacén de material hospitalario

    OpenAIRE

    Marín de la Escalera Esquivel, Manuel

    2011-01-01

    Mediante este proyecto se pretende garantizar que el Almacén Central del Hospital Universitario de Canarias cumple con el Decreto 16/2009 del Gobierno de Canarias, que exige que, dentro de unos plazos, se realice un informe del estado en seguridad contra incendios en dicho establecimiento, y en caso de ser desfavorable, actuar en consecuencia. El proyecto se puede dividir en tres partes en las que se han aplicado conocimientos diversos, desde estudios hidráulicos, como de gases, hasta mecánic...

  7. Terapia génica con citocinas contra cáncer cervicouterino

    OpenAIRE

    Víctor Hugo Bermúdez-Morales; Oscar Peralta-Zaragoza; Vicente Madrid-Marina

    2005-01-01

    La terapia génica es una excelente alternativa para el tratamiento de muchas enfermedades. La capacidad para manipular el DNA ha permitido dirigir la terapia génica para corregir la función de un gen alterado, aumentar la expresión de un gen o activar la respuesta inmune. Así, se puede proponer el uso del DNA como un medicamento capaz de controlar, corregir o curar una enfermedad. La terapia génica contra cáncer tiene un potencial enorme, y en la última década se han obtenido resultados muy a...

  8. A Phenomenon of Cell "Contra-divison"%细胞的"逆分裂"现象

    Institute of Scientific and Technical Information of China (English)

    俞索静; 肖鲁伟; 吴承亮

    2004-01-01

    在人体组织细胞的体外培养中,采用自行设计组建的计算机显微缩时电影系统(computer Time-lapse Microcinematography),反复记录到细胞分裂后的再融合现象.这种细胞由分裂随即又发生融合的过程,可能是一种特殊的"自然融合"(natural fusion),或是细胞的一种"逆分裂"(contra-division)现象.

  9. Habilidades comunicativas dentro de la familia: una medida imprescincible contra el acoso escolar en La Rioja

    OpenAIRE

    Lopez-Hernaez, L. (Lara); Ovejero-Bruna, M.M. (María Mercedes)

    2015-01-01

    En función del análisis de diferentes estudios que resaltan el importante papel del afecto y el diálogo intrafamiliar contra el mal comportamiento de los hijos en sociedad, nos planteamos qué opina la comunidad educativa respecto a esto y qué medidas proponen para erradicar el acoso escolar. Para obtener esta información, se ha llevado a cabo un estudio en la comunidad de La Rioja, a través de un cuestionario dirigido a 348 alumnos de ESO; entrevistas a treinta profesores, dos grupos de discu...

  10. Discriminação contra os estudantes obesos e os muito magros nas escolas Brasileiras

    OpenAIRE

    Kubota, Luis Claudio

    2014-01-01

    A Pesquisa Nacional de Saúde do Escolar (PeNSE) 2012, realizada pelo Instituto Brasileiro de Geografia e Estatística (IBGE), em parceria com o Ministério da Saúde (MS), abrange um amplo leque de assuntos, com destaque para comportamentos de risco. Este artigo tem o objetivo de analisar a discriminação contra estudantes obesos e muito magros, utilizando microdados da PeNSE. Os dados indicam que alunos que se autoclassificam “muito gordos” ou “muito magros” são muito mais propensos a comportame...

  11. La guerra contra el narcotráfico: ¿una guerra perdida?

    OpenAIRE

    Jorge Enrique Pérez Lara

    2011-01-01

    El presente trabajo trata sobre los problemas derivados del narcotráfico en México, por lo que se realiza un estudio de los resultados que ha tenido la guerra frontal emprendida por el presidente Calderón con base en datos proporcionados por instancias oficiales, como la Procuraduría General de la República, y organizaciones civiles, como México Unido Contra la Delincuencia, y en datos internacionales proporcionados por el Índice de Incidencia Delictiva. Todo ello con el propósito de analizar...

  12. La vacunación contra pertussis: Estado actual y perspectivas futuras

    Directory of Open Access Journals (Sweden)

    Celso Pérez-Bolaños

    2012-01-01

    Full Text Available La tosferina o pertussis es una enfermedad producida por la bacteria Gram negativa Bordetella pertussis y constituye actualmente un problema de salud a escala mundial, siendo la población infantil la más vulnerable dentro de los grupos de riesgo. Suele ser fatal en niños menores de un año, debido a que la tos paroxística característica bloquea las vías respiratorias, lo cual provoca la asfixia y la muerte. Adicionalmente, se observan eventos adversos o complicaciones serias de la enfermedad tales como neumonías bacterianas secundarias, epilepsias, encefalopatía, apnea e hipertensión pulmonar. En la actualidad se aplican programas extensivos de vacunación contra pertussis en todo el mundo, de modo que la enfermedad está considerada como relativamente bien controlada. Según informes de la Organización Mundial de la Salud, cerca del 82 % de toda la población infantil mundial recibió las tres dosis de la vacuna de pertussis en 2008. La vacunación global contra pertussis en ese año evitó cerca de 687 000 muertes por la enfermedad. Sin embargo, se ha observado que ocurre un resurgimiento de ella a escala mundial, así como una prevalencia en zonas del mundo donde la vacunación es pobre. El presente trabajo tuvo como objetivo presentar una revisión acerca de los problemas inherentes a la vacunación contra esta enfermedad en el contexto actual de su resurgimiento a escala universal, la forma de enfocarlos y resolverlos, para su aplicación en Cuba en caso necesario. La vacunación contra pertussis necesita de nuevos enfoques dirigidos a la eliminación de un flagelo que afecta primordialmente a la población infantil, que es el futuro de la humanidad. La solución del problema parece ser la búsqueda de nuevas vacunas más eficaces y la extensión de los esquemas de vacunación a la población de adolescentes y adultos que rodean a los infantes, así como a las mujeres en estado de gestación y a los recién nacidos.

  13. Publicidad Contra la Violencia: Un Estudio de Recepción

    OpenAIRE

    Sara Elena Giraldo Villegas; Aixa Lucia Miranda Avendaño

    2014-01-01

    Recientemente se ha estado emitiendo en la televisión nacional de Colombia spots publicitarios generalmente conocidos como mensajes institucionales cuyos contenidos van en contra de las distintas formas de violencia, lo cual marca el inicio de campañas que incentivan la tolerancia y la convivencia pacífica. No obstante, es necesario conocer el resultado de esos mensajes, si han logrado su propósito, y si existe indiferencia ante la violencia real de los telespectadores. La emisión de estos sp...

  14. Rivalidades en las redes de poder de Manila: el golpe contra el gobernador Diego de Salcedo

    Directory of Open Access Journals (Sweden)

    Antoni Picazo Muntaner

    2013-05-01

    Full Text Available En la segunda mitad del siglo XVII Filipinas vivió un inusitado golpe de mano contra su gobernador y capitán general Diego de Salcedo, el cual fue detenido por la Inquisición de las islas y procesado. Proceso que fue el final de una confrontación como nunca se había vivido entre diferentes redes de poder y que acabó con la intervención de la Corte y la condena unánime de todos los participantes en aquellos acontecimientos. 

  15. Diazinon degradation by a novel strain Ralstonia sp. DI-3 and X-ray crystal structure determination of the metabolite of diazinon

    Indian Academy of Sciences (India)

    GUANGLI WANG; YUAN LIU

    2016-09-01

    Diazinon is a widely used organophosphorus insecticide often detected in the environment. A highly effectivediazinon-degrading Ralstonia sp. strain DI-3 was isolated from agricultural soil. Strain DI-3 can utilize dimethoateas its sole carbon source for growth and degrade an initial concentration of 100 mg·L^{−1} diazinon to non-detectablelevels within 60 h in liquid culture. A small amount of second carbon source as co-substrate could slightly enhance thebiodegradation of diazinon. In addition, a less toxic metabolic intermediate formed during the degradation of diazinonmediated by strain DI-3 was purified using thin-layer chromatography (TLC) and identified based on single-crystal Xraydiffraction analysis, allowing a degradation pathway for diazinon by pure culture to be proposed. Finally, this isthe first providing authentic evidence to describe the metabolite.

  16. Meta-analysis Reveals That the Genus Pseudomonas Can Be a Better Choice of Biological Control Agent against Bacterial Wilt Disease Caused by Ralstonia solanacearum.

    Science.gov (United States)

    Chandrasekaran, Murugesan; Subramanian, Dharaneedharan; Yoon, Ee; Kwon, Taehoon; Chun, Se-Chul

    2016-06-01

    Biological control agents (BCAs) from different microbial taxa are increasingly used to control bacterial wilt caused by Ralstonia solanacearum. However, a quantitative research synthesis has not been conducted on the role of BCAs in disease suppression. Therefore, the present study aimed to meta-analyze the impacts of BCAs on both Ralstonia wilt disease suppression and plant (host) growth promotion. The analysis showed that the extent of disease suppression by BCAs varied widely among studies, with effect size (log response ratio) ranging from -2.84 to 2.13. The disease incidence and severity were significantly decreased on average by 53.7% and 49.3%, respectively. BCAs inoculation also significantly increased fresh and dry weight by 34.4% and 36.1%, respectively on average. Also, BCAs inoculation significantly increased plant yield by 66%. Mean effect sizes for genus Pseudomonas sp. as BCAs were higher than for genus Bacillus spp. Among antagonists tested, P. fluorescens, P. putida, B. cereus, B. subtilis and B. amyloliquefaciens were found to be more effective in general for disease reduction. Across studies, highest disease control was found for P. fluorescens, annual plants, co-inoculation with more than one BCA, soil drench and greenhouse condition were found to be essential in understanding plant responses to R. solanacearum. Our results suggest that more efforts should be devoted to harnessing the potential beneficial effects of these antagonists, not just for plant growth promoting traits but also in mode of applications, BCAs formulations and their field studies should be considered in the future for R. solanacearum wilt disease suppression. PMID:27298597

  17. The Effect of Fluorescent Pseudomonads Application on the Resistance of Chili Plants Against the Attack of Ralstonia Solanacearum and Fusarium Oxysporum in the Field

    Directory of Open Access Journals (Sweden)

    Wuryandari Yenny

    2016-01-01

    Full Text Available Chili (Capsicum annuum L. is one of the vegetable commodities with high economic value. Until now, the necessity rate of chili is still high but the production is still low. One of the obstacles, which highly influence chili production, is wilt disease due to Ralstonia solanacearum and Fusarium oxysporum. This study aims at identifying the best fluorescent pseudomonads isolate in suppressing the development of the primary wilt disease due to Ralstonia solanacearum and F. oxysprorum in the field. This study employs Completely Randomized Design that comprises 3 treatments. The three treatments are the type of fluorescent pseudomonads which is Pf-122 isolate, Pf-160 isolate, and Pf-B isolate. The observation parameter on suppressing the disease development is perceived from incubation period of the initial appearance of symptoms, disease index and the change of stem tissue color. The result of the study shows that the longest incubation period is treatment with fluorescent pseudomonads of Pf-122 isolate and Pf-160 isolate. The chili is treated with fluorescent pseudomonads of Pf-122 isolate and Pf-160 isolate, the initial appearance of symptoms at the 8th day after inoculation. In the treatment with fluorescent pseudomonads of Pf-122 isolate and Pf-160 isolate compared to control, is able to delay the appearance of symptom for 3 days. The disease development starts from 10th to 30th day, the treatment with Pf-122 isolate shows the slowest development compared to other treatment and control. In the last observation, the disease index with treatment of Pf-122 isolate is the lowest which is 37%, then it is followed by Pf-B and Pf-160 which are 39% and 40% respectively, whereas in the control it reaches 67%. For the color change on stem tissue, there is no real difference of the three treatments of fluorescent pseudomonads application but it differs and smaller from the control.

  18. Engineering Ralstonia eutropha for Production of Isobutanol (IBT) Motor Fuel from Carbon Dioxide, Hydrogen, and Oxygen Project Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Sinskey, Anthony J. [MIT; Worden, Robert Mark [Michigan State University MSU; Brigham, Christopher [MIT; Lu, Jingnan [MIT; Quimby, John Westlake [MIT; Gai, Claudia [MIT; Speth, Daan [MIT; Elliott, Sean [Boston University; Fei, John Qiang [MIT; Bernardi, Amanda [MIT; Li, Sophia [MIT; Grunwald, Stephan [MIT; Grousseau, Estelle [MIT; Maiti, Soumen [MSU; Liu, Chole [MSU

    2013-12-16

    This research project is a collaboration between the Sinskey laboratory at MIT and the Worden laboratory at Michigan State University. The goal of the project is to produce Isobutanol (IBT), a branched-chain alcohol that can serve as a drop-in transportation fuel, through the engineered microbial biosynthesis of Carbon Dioxide, Hydrogen, and Oxygen using a novel bioreactor. This final technical report presents the findings of both the biological engineering work at MIT that extended the native branched-chain amino acid pathway of the wild type Ralstonia eutropha H16 to perform this biosynthesis, as well as the unique design, modeling, and construction of a bioreactor for incompatible gasses at Michigan State that enabled the operational testing of the complete system. This 105 page technical report summarizing the three years of research includes 72 figures and 11 tables of findings. Ralstonia eutropha (also known as Cupriavidus necator) is a Gram-negative, facultatively chemolithoautotrophic bacteria. It has been the principle organism used for the study of polyhydroxybutyrate (PHB) polymer biosynthesis. The wild-type Ralstonia eutropha H16 produces PHB as an intracellular carbon storage material while under nutrient stress in the presence of excess carbon. Under this stress, it can accumulate approximately 80 % of its cell dry weight (CDW) as this intracellular polymer. With the restoration of the required nutrients, the cells are then able to catabolize this polymer. If extracted from the cell, this PHB polymer can be processed into biodegradable and biocompatible plastics, however for this research, it is the efficient metabolic pathway channeling the captured carbon that is of interest. R. eutropha is further unique in that it contains two carbon-fixation Calvin–Benson–Bassham cycle operons, two oxygen-tolerant hydrogenases, and several formate dehydrogenases. It has also been much studied for its ability in the presence of oxygen, to fix carbon dioxide

  19. Potencial de antagonismo de isolados de Trichoderma sp. contra o isolados de Fusarium sp., in vitro

    Directory of Open Access Journals (Sweden)

    Charles Anthony Hoffmann

    2015-06-01

    Full Text Available Resumo – O uso discriminado de agrotóxicos acarreta em uma grande prejuízo a saúdes das pessoas e do meio ambiente. O uso de novos métodos de combate a pragas se faz necessário para o equilíbrio da cadeia produtiva. A utilização de microrganismos no combate a pragas se faz como uma boa alternativa. O trabalho objetivou-se em avaliar o potencial de antagonismo de isolados de Trichoderma sp. contra o patógeno Fusarium sp. in vitro. Para isso foi utilizado os métodos de confronto direto, pareamento de culturas e de metabólitos voláteis. Os experimentos foram realizados na incubadora de empresas da Universidade Federal do Tocantins – UFT Campus de Gurupi, seguiram com três repetições. Foram testados 15 isolados do antagonista em confronto direto com o patógeno e os mesmos isolados e patógeno foram testados em metabólitos voláteis ambos utilizando o meio de cultura BDA. Todos os isolados apresentaram antagonismo in vitro contra o patógeno.

  20. A compact, high efficiency contra-rotating generator suitable for wind turbines in the urban environment

    Energy Technology Data Exchange (ETDEWEB)

    Booker, J.D. [Department of Mechanical Engineering, University of Bristol, University Walk, Bristol BS8 1TR (United Kingdom); Mellor, P.H.; Wrobel, R.; Drury, D. [Department of Electrical and Electronic Engineering, University of Bristol, Bristol (United Kingdom)

    2010-09-15

    This paper is concerned with the design, development and performance testing of a permanent magnet (PM) generator for wind turbine applications in urban areas. The radially interacting armature windings and magnet array are carried on direct drive, contra-rotating rotors, resulting in a high torque density and efficiency. This topology also provides improved physical and mechanical characteristics such as compactness, low starting torque, elimination of gearboxes, low maintenance, low noise and vibration, and the potential for modular construction. The design brief required a 50 kW continuous rated prototype generator, with a relative speed at the air-gap of 500 rpm. A test rig has been instrumented to give measurements of the mechanical input (torque and speed) and electrical output (voltage, current and power) of the generator, as well as temperature readings from inside the generator using a wireless telemetry device. Peak power output was found to be 48 kW at a contra-rotating speed of 500 rpm, close to the design target, with an efficiency of 94%. It is anticipated that the generator will find application in a wide range of wind turbine designs suited to the urban environment, e.g. types sited on the top of buildings, as there is growing interest in providing quiet, low cost, clean electricity at point of use. (author)

  1. Legislación y justicia contra blasfemos. (Cataluña, siglos XV-XVII

    Directory of Open Access Journals (Sweden)

    Gelabertó Vilagrán, Martí

    2012-12-01

    Full Text Available The repression against the sins of the language is a subject of intense attention from the law and courts of justice in Europe from the low Middle Ages. In Spain there were enacted severe civil and religious laws against the crime of blasphemy by an unequal application. In Catalonia the secular and ecclesiastical judges participated in the repressive politics favoring deterrence springs of moral coercion wit little recourse to physical coercion.La represión contra los pecados de la lengua es importante objeto de atención por parte de la legislación y los tribunales de justicia en Europa desde la Baja Edad Media. En España se promulgaron severas leyes civiles y religiosas contra el delito de blasfemia con una desigual aplicación. En Cataluña los jueces laicos y eclesiásticos participaron de la política represiva privilegiando los resortes disuasorios de la coacción moral sin apenas recurrir a la coerción física.

  2. Blade rows interaction in contra-rotating axial flow pump designed with different rotational speed concept

    International Nuclear Information System (INIS)

    The contra-rotating axial flow pump consisiting of counter-rotating tandem rotors has been expermentally confirmed with better performances than the conventional axial flow pump, but it is known to suffer from the significant potential interaction between the counter-rotating blade rows, which is responsible for the repetitive stresses and unfavourable to the reliable operation. Consequently, to improve the realiability of contra-rotating axial flow pump including the reduction of the blade rows interaction, a new type of rear rotor was designed in the previous study by the rotational speed optimization methodology with some additional considerations. In the present study, to understand the effectiveness of the new design method, instantaneous static pressure fluctuations on the casing wall under the design and off design conditions are investigated by means of experimental and numerical simulation methods. The Fourier analysis is employed to process the data obtained from experiments and numerical simulations, and the axial distribution of the Blade Passing Frequency (BPF) amplitude is obtained. The new rear rotor shows weakened BPF amplitude both upstream and downstream especially at the positions between the two blade rows in both CFD and EFD analyses, implying the reduced blade rows interaction with the new rear rotor

  3. VIOLÊNCIA CONTRA A MULHER POR PARCEIRO ÍNTIMO: (IN VISIBILIDADE DO PROBLEMA

    Directory of Open Access Journals (Sweden)

    Daniele Ferreira Acosta

    2015-01-01

    Full Text Available El objetivo del estudio fue identificar las razones que llevan a la violencia contra la mujer y describir los actos perpetrados por su pareja. Investigación documental, cualitativa realizada en el Servicio de Policía Especializada en Atención a Mujeres. Se analizaron 902 informes registrados entre Agosto/2009 y Diciembre/2011, cuyas víctimas tenían al menos dieciocho años. Se recolectaron los datos de las ocurrencias, describiendo literalmente, las historias de las víctimas y su tratamiento fue a través del análisis de contenido. Fue identificados como factores desencadenantes de la violencia: la supremacía masculina como generadora de sufrimiento y sumisión, los problemas derivados del uso de drogas, los problemas relacionados con los niños y la división de los bienes. La gravedad fue escalada por las consecuencias a la víctima y su familia. El personal de enfermería como parte de la red de apoyo, debe entender este fenómeno como un problema de salud y esforzarse por romper las barreras que impidan el servicio eficaz y eficiente, auxiliando en el fortalecimiento de la autonomía de las mujeres, incluyendo a los hombres en acciones de combate y prevención de la violencia contra las mujeres.

  4. Air-structure coupling features analysis of mining contra-rotating axial flow fan cascade

    International Nuclear Information System (INIS)

    The interaction between contra-rotating axial flow fan blade and working gas has been studied by means of establishing air-structure coupling control equation and combining Computational Fluid Dynamics (CFD) and Computational solid mechanics (CSM). Based on the single flow channel model, the Finite Volume Method was used to make the field discrete. Additionally, the SIMPLE algorithm, the Standard k-ε model and the Arbitrary Lagrangian-Eulerian dynamic grids technology were utilized to get the airflow motion by solving the discrete governing equations. At the same time, the Finite Element Method was used to make the field discrete to solve dynamic response characteristics of blade. Based on weak coupling method, data exchange from the fluid solver and the solid solver was processed on the coupling interface. Then interpolation was used to obtain the coupling characteristics. The results showed that the blade's maximum amplitude was on the tip of the last-stage blade and aerodynamic force signal could reflect the blade working conditions to some extent. By analyzing the flow regime in contra-rotating axial flow fan, it could be found that the vortex core region was mainly in the blade surface, the hub and the blade clearance. In those regions, the turbulence intensity was very high. The last-stage blade's operating life is shorter than that of the pre-stage blade due to the fatigue fracture occurs much more easily on the last-stage blade which bears more stress

  5. Vacunas terapéuticas recombinantes contra el cáncer del cuello uterino

    Directory of Open Access Journals (Sweden)

    BERUMEN JAIME

    1997-01-01

    Full Text Available Durante el desarrollo del cáncer cervicouterino se inducen mecanismos para evadir el sistema inmune, como son la disminución de la expresión de moléculas de antígeno mayor de histocompatibilidad I y la secreción de citocinas por las células tumorales. Como consecuencia de ello, la estimulación de linfocitos T citotóxicos (LTC y cooperadores (TC, de células asesinas naturales (AN y macrófagos es muy deficiente. Para inducir una respuesta inmune efectiva contra el tumor, se requiere la estimulación simultánea de múltiples componentes del sistema inmune: por vía sistémica la estimulación de LTC y TC contra epítopos del virus del papiloma humano, y en un nivel local, la inducción de la secreción de citocinas por el tumor, para aumentar el procesamiento y la presentación de blancos tumorales, así como la estimulación de los linfocitos, AN y macrófagos que infiltran el tumor.

  6. Un regimen sanitatis contra la peste: el tratado del licenciado Vázquez

    Directory of Open Access Journals (Sweden)

    de la Peña Barroso, Efrén

    2012-12-01

    Full Text Available The regimina pestis or plague treatises are the main literary genre where late medieval doctors reflected their medical concern about plague and pestilences. These medical texts, in which some practical recommendations were given to people to avoid and/or cure the effects of epidemic disease of high letality, were developed since the outbreak of the epidemic in 1348. The text now presented is a treatise on plague written by the «licenciado Vázquez», a converso from the archbishopric of Toledo who was tried by the Inquisition at the beginning of the 16th Century.Los regimientos o tratados contra la peste o pestilencia son expresión del modo en que los médicos universitarios bajomedievales hicieron frente a la enfermedad epidémica de alta letalidad. Estos textos médicos, que consistían en un repertorio más o menos amplio de recomendaciones prácticas para prevenir y/o tratar dicha enfermedad, experimentaron un notable desarrollo a partir de la peste negra de 1348. El texto que se ofrece a continuación es un tratado inédito contra la peste escrito por el licenciado Vázquez, un judeoconverso toledano que fue procesado por el Tribunal de la Inquisición a principios del siglo XVI.

  7. Thomas Mann: um escritor contra o nazismo Thomas Mann: a writer against nazism

    Directory of Open Access Journals (Sweden)

    Sonia Dayan-Herzbrun

    1997-01-01

    Full Text Available O combate que Thomas Mann travou contra o nazismo a partir de 1922 é exemplar, pois é o de um escritor apaixonado pela liberdade e não o de um militante. Ele privilegia a ficção e o mito como meios de luta contra o fascínio exercido pelo nazismo e afirma a permanência de uma Alemanha cultural, cosmopolita, fonte de uma universalidade estranha a todos os particularismos étnicos. Goethe, com quem ele se identifica e no qual se projeta, é a figura de proa dessa Alemanha.Thomas Mann's attack, from 1922 onwards, against Nazism is exemplar in the sense that it was promoted by a writer committed to the defence of liberty and not by a militant. He underlines fiction and myth as ways of fighting against the charms of Nazism and proclaims the permanence of a cultural, cosmopolitan Germany, a source of a universality which is alien to all kinds of ethnic particularities. Goethe, someone he is identified with, is the prominent figure of this Germany.

  8. El derecho a la tutela judicial efectiva en el Derecho Europeo y las sanciones contra Al Qaeda

    OpenAIRE

    Hinojosa-Mart??nez, Luis M.; P??rez-Bern??rdez, Carmela

    2012-01-01

    La proliferaci??n de instrumentos internacionales de lucha contra el terrorismo ha planteado importantes desaf??os jur??dicos, tanto al Derecho internacional como al Derecho europeo. Uno de los terrenos donde han aparecido cuestiones m??s complejas e intrincadas ha sido en la dial??ctica entre la salvaguarda de la seguridad y la garant??a de los derechos fundamentales de los individuos. En el plano europeo, la aplicaci??n de las sanciones del Consejo de Seguridad de Naciones Unidas contra Al ...

  9. Subalternidade de gênero: refletindo sobre a vulnerabilidade para violência doméstica contra a mulher

    OpenAIRE

    Laura Christina Macedo Piosiadlo; Rosa Maria Godoy Serpa da Fonseca; Rafaela Gessner

    2014-01-01

    Objetivo: Este artigo tem o objetivo de refletir sobre a violência de gênero praticada contra a mulher no espaço intrafamiliar, sobretudo, a relação entre a subalternidade de gênero no âmbito familiar e a vulnerabilidade para este tipo de violência. Resultados: A subalternidade de gênero e a violência contra mulher apresentam-se entrelaçadas na história e, conformam-se por meio da construção de gênero nas sociedades. As mulheres formam um grupo que é violentado, constantemente, e de dive...

  10. Gênero e violência contra a mulher na literatura de enfermagem: uma revisão

    OpenAIRE

    Maiara Cardoso Duarte; Rosa Maria Godoy Serpa da Fonseca; Vânia de Souza; Érica Dumont Pena

    2015-01-01

    RESUMO Na produção científica sobre desigualdades na relação homens e mulheres destacam-se estudos sobre violência contra a mulher e a premência do seu reconhecimento como problema de saúde pública. Objetivo: considerando o potencial da Enfermagem para um olhar ampliado desta temática, pretendeu-se conhecer o que está sendo veiculado sobre gênero e violência contra a mulher nas principais revistas de enfermagem brasileiras. Método: realizou-se revisão integrativa, de publicações online, entre...

  11. Notas sobre a discriminação racial e o seu lugar entre os crimes contra a humanidade

    OpenAIRE

    Jerónimo, Patrícia

    2004-01-01

    Separata Análise dos instrumentos internacionais de direitos humanos que proíbem a discriminação racial, bem como da inclusão da discriminação racial na definição de crimes contra a humanidade no Estatuto do Tribunal Penal Internacional. A discriminação racial como crime contra a humanidade no Código Penal português. Limitações da definição do tipo legal de crime de discriminação racial.

  12. Justicia y género en Nariño en casos de violencia contra las mujeres

    OpenAIRE

    Goyes Moreno, Isabel; Montezuma M., Sandra

    2012-01-01

    Como resultado de una revisión de los fallos proferidos por los juzgados municipales, los juzgados de circuito y la Sala Penal del Tribunal Superior del Distrito Judicial de Pasto, entre los años 2005 y 2011, en relación con los delitos de violencia cometidos contra mujeres, fue posible establecer que las principales formas de agresión contra la mujer se enmarcan dentro de los delitos de acceso carnal violento, actos sexuales y acceso carnal abusivo con menor de 14 años, homicidio, violencia ...

  13. Efectividad de la vacuna VA-MENGOC-BC® contra cepas heterólogas de meningococo B

    Directory of Open Access Journals (Sweden)

    Rolando Ochoa-Azze

    2016-08-01

    Full Text Available La efectividad de las vacunas de vesículas de membrana externa de Neisseria meningitidis serogrupo B ha sido cuestionada por algunos investigadores, limitándola a la cepa vacunal. VA-MENGOC-BC® es una vacuna antimeningocócica basada en dicha tecnología. Presentamos un metaanálisis de estudios realizados en diferentes contextos epidemiológicos, evaluando su efectividad contra cepas heterólogas de meningococo B en varios grupos de edades. Se demuestra que la vacuna es efectiva contra cepas homólogas, heterólogas y de diferentes complejos clonales.

  14. Antagonismo social de las luchas socioambientales: Cuerpo, emociones y subjetividad como terreno de lucha contra la afectación

    OpenAIRE

    Oliver Gabriel Hernández Lara; Mina Lorena Navarro Trujillo

    2010-01-01

    La acumulación por desposesión que plantea David Harvey, nos sitúa en un contexto en el que la captura de los procesos vivos se da cada vez con mayor voracidad. Ante el despojo de los bienes comunes, materiales e inmateriales, está emergiendo un nuevo antagonismo social contra el paradigma extractivo y la mercantilización de la vida. La relación del cuerpo y las emociones emerge como un terreno de lucha contra la afectación ambiental, al mismo tiempo que habilita un tiempo y espacio autónomo ...

  15. Fototerapia na doença enxerto contra hospedeiro Phototherapy in the graft versus host disease

    Directory of Open Access Journals (Sweden)

    Ida Duarte

    2008-10-01

    Full Text Available FUNDAMENTOS: A doença enxerto contra hospedeiro é um dos obstáculos ao sucesso do transplante de medula óssea, e o envolvimento cutâneo é freqüente. A fototerapia é utilizada devido à intensa atividade imunomoduladora local, sendo opção terapêutica adjuvante para as lesões cutâneas resistentes à terapia convencional. OBJETIVO: Realizar análise descritiva do tratamento da doença enxerto contra hospedeiro com fototerapia (Puva ou UVB de faixa estreita. MÉTODOS: Foram atendidos nove pacientes com manifestação cutânea da doença enxerto contra hospedeiro aguda ou crônica. Seis foram tratados com Puva, terapia de primeira escolha, e três com UVB de faixa estreita. As sessões foram realizadas três vezes por semana, e a resposta terapêutica avaliada após 12 sessões. RESULTADOS: Todos os pacientes com doença enxerto contra hospedeiro aguda mostraram melhora, com desaparecimento do eritema e do edema. Naqueles com doença crônica, observaram-se involução das lesões liquenóides e melhora da mobilidade daqueles com a forma esclerodermiforme. Dois pacientes apresentaram doença de evolução grave e foram a óbito. CONCLUSÃO: A fototerapia mostrou-se efetiva no tratamento das manifestações cutâneas da doença enxerto contra hospedeiro aguda e crônica. A Puva permite o controle da doença, podendo a UVB de faixa estreita ser opção para pacientes impossibilitados de usar medicação sistêmica.BACKGROUND: Graft versus host disease is one of the obstacles to successful bone marrow transplantation. It often affects the skin. Phototherapy has been used because of its strong local immunomodulatory activity and it is an option for adjuvant therapy for skin lesions of graft versus host disease resistant to conventional therapy. OBJECTIVE: To make a descriptive analysis of treating graft versus host disease with phototherapy (PUVA or narrowband UVB. Methods - Nine patients with cutaneous manifestation of acute or chronic

  16. Notificações de violência sexual contra a mulher no Brasil

    Directory of Open Access Journals (Sweden)

    Gracyelle Alves Remigio Moreira

    2015-09-01

    Full Text Available Objetivo: Apresentar o quadro de violência sexual contra a mulher no Brasil, com base nas notificações realizadas no Sistema de Informação de Agravos de Notificação (SINAN. Métodos: Trata-se de um estudo descritivo, com abordagem quantitativa, que analisou informações referentes às notificações de violência sexual contra a mulher, no período de 2009 a 2013, considerando a unidade da federação, perfil das mulheres, características da ocorrência e encaminhamentos realizados pelo setor saúde. Os dados foram analisados por meio da estatística descritiva, sendo apresentados números absolutos e relativos derivados das notificações. Resultados: No Brasil, foram registradas 21.871 notificações no período estudado. Observaram-se maiores taxas de registros no ano de 2013 e na região Norte. Predominou o ciclo de vida de 10 a 19 anos (10.806/49,4%, as raças branca (8.894/40,7% e parda (8.535/39,0%, e a escolaridade ensino fundamental incompleto (5.444/24,9%. Os casos de violência sexual ocorreram com maior frequência na residência da mulher (13.259/60,6%, com agressor conhecido (5.649/25,8% e sem suspeita do uso de álcool (9.249/42,3%. A maior parte do atendimento no setor saúde foi de nível ambulatorial (15.842/72,6%, e os casos evoluíram para alta (16.879/77,2%. Conclusão: As notificações cresceram progressivamente no período estudado, e a violência sexual contra a mulher no país, registrada pelo setor saúde, atingiu, principalmente, adolescentes, no ambiente doméstico e com agressor conhecido.

  17. Tone and Broadband Noise Separation from Acoustic Data of a Scale-Model Contra-Rotating Open Rotor

    Science.gov (United States)

    Sree, Dave; Stephens, David B.

    2014-01-01

    Renewed interest in contra-rotating open rotor technology for aircraft propulsion application has prompted the development of advanced diagnostic tools for better design and improved acoustical performance. In particular, the determination of tonal and broadband components of open rotor acoustic spectra is essential for properly assessing the noise control parameters and also for validating the open rotor noise simulation codes. The technique of phase averaging has been employed to separate the tone and broadband components from a single rotor, but this method does not work for the two-shaft contra-rotating open rotor. A new signal processing technique was recently developed to process the contra-rotating open rotor acoustic data. The technique was first tested using acoustic data taken of a hobby aircraft open rotor propeller, and reported previously. The intent of the present work is to verify and validate the applicability of the new technique to a realistic one-fifth scale open rotor model which has 12 forward and 10 aft contra-rotating blades operating at realistic forward flight Mach numbers and tip speeds. The results and discussions of that study are presented in this paper.

  18. Effect of Time Step Size and Turbulence Model on the Open Water Hydrodynamic Performance Prediction of Contra-Rotating Propellers

    Institute of Scientific and Technical Information of China (English)

    WANG Zhan-zhi; XIONG Ying

    2013-01-01

    A growing interest has been devoted to the contra-rotating propellers (CRPs) due to their high propulsive efficiency,torque balance,low fuel consumption,low cavitations,low noise performance and low hull vibration.Compared with the single-screw system,it is more difficult for the open water performance prediction because forward and aft propellers interact with each other and generate a more complicated flow field around the CRPs system.The current work focuses on the open water performance prediction of contra-rotating propellers by RANS and sliding mesh method considering the effect of computational time step size and turbulence model.The validation study has been performed on two sets of contra-rotating propellers developed by David W Taylor Naval Ship R & D center.Compared with the experimental data,it shows that RANS with sliding mesh method and SST k-ω turbulence model has a good precision in the open water performance prediction of contra-rotating propellers,and small time step size can improve the level of accuracy for CRPs with the same blade number of forward and aft propellers,while a relatively large time step size is a better choice for CRPs with different blade numbers.

  19. The Contra-Diction of Design: Blake's Illustrations to Gray's "Ode on the Death of a Favourite Cat."

    Science.gov (United States)

    Lussier, Mark

    1989-01-01

    Argues that William Blake's illustrations for Thomas Gray's "Ode on the Death of a Favourite Cat" testify to the contradictions in Gray's poetry. States that Blake's designs offer another language, a contra-diction, that deconstructs Gray's conscious discourse and liberates his unconscious discourse. (RS)

  20. Investigation on the wake evolution of contra-rotating propeller using RANS computation and SPIV measurement

    Directory of Open Access Journals (Sweden)

    Paik Kwang-Jun

    2015-05-01

    Full Text Available The wake characteristics of Contra-Rotating Propeller (CRP were investigated using numerical simulation and flow measurement. The numerical simulation was carried out with a commercial CFD code based on a Reynolds Averaged Navier-Stokes (RANS equations solver, and the flow measurement was performed with Stereoscopic Particle Image Velocimetry (SPIV system. The simulation results were validated through the comparison with the experiment results measured around the leading edge of rudder to investigate the effect of propeller operation under the conditions without propeller, with forward propeller alone, and with both forward and aft propellers. The evolution of CRP wake was analyzed through velocity and vorticity contours on three transverse planes and one longitudinal plane based on CFD results. The trajectories of propeller tip vortex core in the cases with and without aft propeller were also compared, and larger wake contraction with CRP was confirmed.

  1. The politics of presidential illness. Ronald Reagan and the Iran-Contra Scandal.

    Science.gov (United States)

    Gilbert, Robert E

    2014-01-01

    This paper assesses the likelihood that the Iran-Contra scandal was shaped heavily by the effects of Ronald Reagan's cancer surgery in summer, 1985. During the President's hospitalization and in the period soon after, he took several actions--which he apparently did not remember--that launched a policy that was unwise, counterproductive, and a failure. These damaged both his Administration and his standing in history. The 25th Amendment afforded Reagan the means by which his involvement in these events could easily have been avoided. However, the President and his aides determined that he would resume the powers and duties of the presidency only hours after undergoing extensive cancer surgery. This decision contributed materially to the most damaging episode of Reagan's eight-year presidency.

  2. La guerra contra las mujeres : El caso del feminicidio en Guatemala

    OpenAIRE

    Bender, Karin

    2011-01-01

    En 2009 se encontraron 708 mujeres asesinadas en Guatemala, un número que se ha incrementado drásticamente en los últimos años. Una gran parte de estos asesinatos son brutales y presentan signos de violencia sexual y tortura, lo cual señala una conexión específica de violencia de género. El término feminicidio tiene su origen en el carácter de estos crímenes, el asesinato de mujeres por el hecho de ser mujeres y es la forma más extrema de la violencia de género contra la mujer. La impunidad r...

  3. La seguridad jurídica frente a sentencias definitivas. Tutela contra sentencias

    Directory of Open Access Journals (Sweden)

    Manuel Fernando Quinche-Ramírez

    2010-06-01

    Full Text Available Este escrito trabaja los temas de la seguridad jurídica y la tutela contra sentencias. Pretende mostrar dos cosas: en primer lugar, que el Estado de inseguridad jurídica que padece Colombia no tiene origen en las sentencias que profieren los jueces de tutela, sino en las prácticas normativas irregulares del Congreso y de la Presidencia de la República. En segundo lugar evidencia, desde las prácticas del Sistema Interamericano de Protección de los Derechos Humanos, del que Colombia forma parte y, que resulta conforme con la Convención Americana sobre Derechos Humanos, el examen judicial de las sentencias proferidas por los jueces locales.

  4. Study on the impeller hydraulic performance for the contra-rotating axial flow pump

    International Nuclear Information System (INIS)

    This paper discusses the design method and performance of the front and rear impellers of the contra-rotating axial flow pump. A definition of specific speed has been given. The design head of rear impeller is suggested to increase appropriately. By analyzing the inlet and outlet velocity triangles of the twin impellers in detail under design and off-design point, the paper gives a matching condition and formulas for working out the two triangles. Based on the velocity triangles and 'lift method', the geometric parameters of the twin impellers have been designed, the results have been analyzed qualitatively, and the hydraulic performance has been predicted. A practical design shows that at the same design head of the twin impellers, the relative velocity at the middle of inlet and outlet of rear impeller are larger than that of the front impeller, while the stagger angle is smaller and the head curve is much steeper

  5. VIOLÊNCIA CONTRA MULHERES: REFLEXÕES TEÓRICAS

    OpenAIRE

    Leticia Casique Casique; Antonia Regina Ferreira Furegato

    2006-01-01

    A violência manifesta-se de diferentes formas, em distintas circunstâncias e com diversos tipos de atos violentos dirigidos a crianças, mulheres, idosos e outros indefesos. Violência doméstica, violência de gênero e violência contra mulheres são termos utilizados para denominar este grave problema que degrada a integridade da mulher. A violência de gênero pode manifestar-se através de violência física, violência psicológica, violência sexual, violência econômica e violência no trabalho. A vio...

  6. Domesticar la violencia contra las mujeres: una forma de desactivar el conflicto intergéneros

    OpenAIRE

    Marugán Pintos, Begoña

    2012-01-01

    La violencia contra las mujeres ha sido referenciada bajo distintas denominaciones: «maltrato», «violencia doméstica», «machista», «de género», «terrorismo doméstico», etc. Estas distintas denominaciones han significado una ampliación o una reducción de los comportamientos que en cada momento se consideraban violentos. Este artículo analizará el camino conceptual por el que ha transitado la violencia sobre las mujeres, en el Estado español, a lo largo de las últimas décadas. A través de este ...

  7. MEDICINA Y CRIMEN CONTRA LA HUMANIDAD. EL LEGADO DE LA DOCTORA ADÉLAÏDE HAUTVAL

    Directory of Open Access Journals (Sweden)

    EMILIA BEA

    2016-01-01

    Full Text Available En el trabajo se aborda el testimonio de la doctora alsaciana, Adélaïde Hautval, sobre la pseudomedicina practicada en el Lager y sobre su negativa a colaborar en el crimen contra la humanidad. A través de su diario de la deportación y de las actas de un peculiar juicio a Auschwitz celebrado en Londres en 1964, nos adentramos en los dilemas ético-profesionales que tuvieron que afrontar los médicos prisioneros en aquel escenario y que, en su caso, dieron lugar a acciones de resistencia ante la barbarie, de desobediencia a sus superiores y de solidaridad con las víctimas capaces de iluminar la actitud a tomar ante los dispositivos biopolíticos contemporáneos.

  8. La guerra contra el francés en el cine mudo español

    OpenAIRE

    Rey-Reguillo, Antonia del

    2012-01-01

    Desde sus orígenes el cine adoptó una función pedagógica que sirvió para ilustrar a los espectadores iletrados, por entonces su público habitual. Así, el cinematógrafo se convirtió en agente de la memoria colectiva y potente generador de mitos. Uno de los episodios históricos a los que prestó atención muy pronto fue a la Guerra de la Independencia librada por los españoles contra los franceses durante un período de seis años. Y fue el genio de Segundo de Chomón el que dirigió la primera de la...

  9. Antagonism of Aspergillus terreus to Sclerotinia sclerotiorum Antagonismo de Aspergillus terreus contra Sclerotinia sclerotiorum

    Directory of Open Access Journals (Sweden)

    Itamar S. Melo

    2006-12-01

    Full Text Available An Aspergillus terreus strain showed in vitro antagonistic activity against the plant pathogen Sclerotinia sclerotiorum (Lib. de Bary. The interaction between A. terreus and sclerotia revealed that the mycoparasite sporulated abundantly on the sclerotial surface. Cell breakdown due to host cell wall disruption was observed in inner rind cells, by a scanning electron microscopy.Uma linhagem de Aspergillus terreus mostrou forte atividade parasítica contra Sclerotinia sclerotiorum. Interações entre o patógeno e o antagonista revelaram que A. terreus esporulou profusamente sobre os escleródios. Quando visto em microscopia eletrônica de varredura, o antagonista mostra-se rompendo e lisando a parede celular e penetrando o interior do escleródio, onde se estabelece no tecido medular.

  10. Resultados de la Policía Nacional en la lucha contra el crimen, 2011

    Directory of Open Access Journals (Sweden)

    Ervyn Norza Céspedes

    2012-06-01

    Full Text Available El artículo contiene la descripción de los resultados obtenidos por la Policía Nacional en el desarrollo de estrategias orientadas a garantizar la seguridad y la convivencia ciudadana en Colombia durante el 2011, entre los cuales están las capturas por todos los delitos consagrados en el Código Penal, el rescate de personas secuestradas, la desactivación de artefactos explosivos, la recuperación de vehículos y la incautación y recuperación de mercancía, entre otras actividades de repercusión nacional e internacional en la lucha contra el crimen.

  11. Anticuerpos séricos contra la enfermedad de Newcastle e Influenza Aviar en aves rapaces de Chile.

    Directory of Open Access Journals (Sweden)

    Daniel González-Acuña

    2012-12-01

    Full Text Available Objetivo. Detectar la presencia de anticuerpos séricos sanguíneos contra los virus de la Enfermedad de Newcastle (ENC e Influenza aviar (IA, para comprender la contribución de las aves silvestres en la transmisión de estos virus en Chile. Materiales y métodos. Se analizaron 63 aves pertenecientes a los órdenes Falconiformes y Strigiformes desde centros de rehabilitación de aves de las zonas central y sur de Chile. Se realizaron las pruebas de inhibición de la hemoaglutinación (IHA para detectar anticuerpos contra el virus ENC e inmunodifusión en gel agar (IDGA y ELISA para IA. Resultados. Se detectaron 14 aves positivas (22.2% para anticuerpos séricos contra el virus de la ENC. En cambio, no se registraron anticuerpos séricos sanguíneos para el virus de la IA. Conclusiones. La presencia de aves rapaces positivas en los centros de rescate a los anticuerpos séricos contra el virus de la ENC puede ser explicada por el consumo de carne de pollos que han sido vacunados contra ENC o consumo de aves que han adquirido directamente el virus vacunal a través de los distintos procedimientos de administración (aerosoles, bebederos de la vacuna o por el ingreso a los centros de rescate de aves rapaces migratorias, las que podrían facilitar la diseminación de la infección desde los países de origen, hecho que debe ser investigado.

  12. Análisis del fenómeno de la violencia contra los ancianos

    Directory of Open Access Journals (Sweden)

    Celín Pérez Nájera

    2010-12-01

    Full Text Available El artículo presenta una revisión bibliográfica sobre el impacto social de la violencia contra los ancianos, desde la óptica criminológica. En el trabajo se utilizó como método investigativo el enfoque dialéctico-materialista de la realidad, que facilitó el engranaje de toda la investigación en diferentes etapas. Las valoraciones generalizadoras y sistematizadoras se elaboraron desde los enfoques modelativo y sistémico-estructural. Luego de analizar la diversidad de conceptos de violencia, se estableció una definición desde una formación social e histórica; existen dos principios que distinguen sus características: uno que la concibe como un fenómeno de carácter social y el teórico-ecológico, que consiste en el empleo de la fuerza física, económica o política, e implica el abuso de poder cómo único método para resolver el conflicto. Así mismo, se examinó el comportamiento de la violencia contra los ancianos en diversos países: España, Estados Unidos, Perú, Brasil, Panamá, Argentina, Colombia, Chile y Cuba. En general, son alarmantes las cifras de incidencia del fenómeno. De igual forma, en Cuba crece la victimización sobre los ancianos. Se aprecia como manifestación fundamental la violencia psicológica o emocional. Aunque existen mecanismos de denuncia, falta de divulgación y sistematicidad de acciones, que permitan enfrentar la incidencia de este mal social, que afecta a dicho grupo de riesgo de la violencia.

  13. Counterintuitive publicity and the rebound effect A publicidade contra-intuitiva e o efeito ricochete

    Directory of Open Access Journals (Sweden)

    Francisco Leite

    2008-11-01

    Full Text Available Counterintuitive publicity and the rebound effect — This paper shares with the reader some conceptual ideas of counterintuitive advertising, observing its possible effects on the reevaluation and deconstruction of beliefs and social stereotypes in the cognitive make-up of the viewer. The ironic rebound effect is singled out among the probable reflexes, according to the theory propounded by Daniel M. Wegner. This theory is applied taking as an example Fiat's commercial "The Driver", which was part of an advertising campaign in Brazil called "Review your concepts" to introduce its new Palio 2002 car model. The authors are currently engaged in a laboratory experiment to measure the above described theory in a consistent manner. O propósito deste artigo é compartilhar com o leitor algumas noções conceituais de publicidade contra-intuitiva e observar seus possíveis efeitos na reavaliação, desconstrução de crenças e estereótipos sociais, na estrutura cognitiva do indivíduo receptor. Destaca-se entre os reflexos provavelmente gerados o irônico efeito ricochete, segundo a teoria desenvolvida por Daniel M. Wegner. A aplicação para se discutir o cruzamento da narrativa contra-intuitiva e o efeito ricochete será, neste primeiro momento, pela exemplificação do filme Motorista, peça integrante da campanha publicitária da Fiat do Brasil "Reveja seus conceitos", para o lançamento do automóvel Palio 2002. Um experimento laboratorial está sendo desenvolvido pelos autores para se mensurar de maneira consistente a apresentação teórico-conceitual exposta.

  14. La contra-reforma del Estado y el trabajo en salud en los servicios

    Directory of Open Access Journals (Sweden)

    Claudia MARCH

    2011-04-01

    Full Text Available O presente ensaio objetiva contribuir para a análise da relação entre o Estado brasileiro e os trabalhadores de saúde em uma conjuntura de contra-reforma do Estado a partir de uma análise das proposições dos governos Fernando Henrique Cardoso e Luis Inácio Lula da Silva. Parto do pressuposto de que está em curso desde o primeiro governo Fernando Henrique Cardoso um processo de contra-reforma no setor saúde sutil, gradual e informal. Particularmente no que diz respeito à relação entre o Estado e os trabalhadores do setor público de saúde, durante os governos de Fernando Henrique Cardoso a proposição de Organizações Sociais (OS e a proposta de Emprego Público, dentre outras atingiram direitos dos trabalhadores. Durante o período, a precarização das relações de trabalho se generalizou na administração pública. Na seqüência, o governo Luiz Inácio Lula da Silva, ainda que sob a retórica de combate à precarização do trabalho em saúde no setor público, apresenta ao Congresso Nacional a projeto de criação das Fundações Estatais de Direito Privado (FEDP para as políticas sociais, as quais possuem extrema semelhança com as OS, com destaque para a flexibilização dos direitos dos trabalhadores do serviço público.

  15. Violence against women: theoretical reflections Violencia contra mujeres: reflexiones teóricas Violência contra mulheres: reflexões teóricas

    Directory of Open Access Journals (Sweden)

    Leticia Casique Casique

    2006-12-01

    Full Text Available Violence appears in different forms and circumstances and involves distinct kinds of violent acts against children, women, elderly and other defenseless persons. This serious problem, which degrades women's integrity, is denoted by terms like domestic violence, gender violence and violence against women. Gender violence can appear as physical, psychological, sexual, economic violence, as well as violence at work. Violence against women committed by their intimate partners can be analyzed through the Ecological Model, which explains the close relation between individuals and their environment. Factors influencing people's behavior towards this violence should be analyzed with a view to establishing help programs.La violencia se manifiesta de diferentes formas, en distintas circunstancias y con diversos tipos de actos dirigidos a niños, mujeres, ancianos y otras personas indefensas. Violencia domestica, violencia de genero y violencia contra mujeres son términos utilizados para denominar este grave problema que degrada la integridad de la mujer. La violencia de género puede manifestarse a través de violencia física, violencia psicológica, violencia sexual, violencia económica y violencia en el trabajo. La violencia sufrida por la mujer por parte de su compañero íntimo puede ser analizada a través del Modelo Ecológico que explica la estrecha relación entre el individuo y su entorno. Se concluyo que es importante analizar los factores que influyen en el comportamiento de las personas frente a la violencia para establecer programas de ayuda.A violência manifesta-se de diferentes formas, em distintas circunstâncias e com diversos tipos de atos violentos dirigidos a crianças, mulheres, idosos e outros indefesos. Violência doméstica, violência de gênero e violência contra mulheres são termos utilizados para denominar este grave problema que degrada a integridade da mulher. A violência de gênero pode manifestar-se através de viol

  16. Genome-Enabled Phylogeographic Investigation of the Quarantine Pathogen Ralstonia solanacearum Race 3 Biovar 2 and Screening for Sources of Resistance Against Its Core Effectors.

    Science.gov (United States)

    Clarke, Christopher R; Studholme, David J; Hayes, Byron; Runde, Brendan; Weisberg, Alexandra; Cai, Rongman; Wroblewski, Tadeusz; Daunay, Marie-Christine; Wicker, Emmanuel; Castillo, Jose A; Vinatzer, Boris A

    2015-05-01

    Phylogeographic studies inform about routes of pathogen dissemination and are instrumental for improving import/export controls. Genomes of 17 isolates of the bacterial wilt and potato brown rot pathogen Ralstonia solanacearum race 3 biovar 2 (R3bv2), a Select Agent in the United States, were thus analyzed to get insight into the phylogeography of this pathogen. Thirteen of fourteen isolates from Europe, Africa, and Asia were found to belong to a single clonal lineage while isolates from South America were genetically diverse and tended to carry ancestral alleles at the analyzed genomic loci consistent with a South American origin of R3bv2. The R3bv2 isolates share a core repertoire of 31 type III-secreted effector genes representing excellent candidates to be targeted with resistance genes in breeding programs to develop durable disease resistance. Toward this goal, 27 R3bv2 effectors were tested in eggplant, tomato, pepper, tobacco, and lettuce for induction of a hypersensitive-like response indicative of recognition by cognate resistance receptors. Fifteen effectors, eight of them core effectors, triggered a response in one or more plant species. These genotypes may harbor resistance genes that could be identified and mapped, cloned, and expressed in tomato or potato, for which sources of genetic resistance to R3bv2 are extremely limited. PMID:25710204

  17. Development of variable number of tandem repeats typing schemes for Ralstonia solanacearum, the agent of bacterial wilt, banana Moko disease and potato brown rot.

    Science.gov (United States)

    N'guessan, Carine Aya; Brisse, Sylvain; Le Roux-Nio, Anne-Claire; Poussier, Stéphane; Koné, Daouda; Wicker, Emmanuel

    2013-03-01

    Ralstonia solanacearum is an important soil borne bacterial plant pathogen causing bacterial wilt on many important crops. To better monitor epidemics, efficient tools that can identify and discriminate populations are needed. In this study, we assessed variable number of tandem repeats (VNTR) genotyping as a new tool for epidemiological surveillance of R. solanacearum phylotypes, and more specifically for the monitoring of the monomorphic ecotypes "Moko" (banana-pathogenic) and "brown rot" (potato-pathogenic under cool conditions). Screening of six R. solanacearum genome sequences lead to select 36 VNTR loci that were preliminarily amplified on 24 strains. From this step, 26 single-locus primer pairs were multiplexed, and applied to a worldwide collection of 337 strains encompassing the whole phylogenetic diversity, with revelation on a capillary-electrophoresis genotype. Four loci were monomorphic within all phylotypes and were not retained; the other loci were highly polymorphic but displayed a clear phylotype-specificity. Phylotype-specific MLVA schemes were thus defined, based on 13 loci for phylotype I, 12 loci for phylotype II, 11 loci for phylotype III and 6 for phylotype IV. MLVA typing was significantly more discriminative than egl-based sequevar typing, particularly on monomorphic "brown rot" ecotype (phylotype IIB/sequevar 1) and "Moko disease" clade 4 (Phylotype IIB/sequevar 4). Our results raise promising prospects for studies of population genetic structures and epidemiological monitoring. PMID:23376194

  18. Characterization of two novel alcohol short-chain dehydrogenases/reductases from Ralstonia eutropha H16 capable of stereoselective conversion of bulky substrates.

    Science.gov (United States)

    Magomedova, Zalina; Grecu, Andreea; Sensen, Christoph W; Schwab, Helmut; Heidinger, Petra

    2016-03-10

    Biocatalysis has significant advantages over organic synthesis in the field of chiral molecule production and several types of stereoselective enzymes are already in use in industrial biotechnology. However, there is still a high demand for new enzymes capable of transforming bulky molecules with sufficient operability. In order to reveal novel high-potential biocatalysts, the complete genome of the β-proteobacterium Ralstonia eutropha H16 was screened for potential short-chain dehydrogenases/reductases (SDRs). We were able to identify two (S)-enantioselective SDRs named A5 and B3. These showed clear preference towards long-chain and aromatic secondary alcohols, aldehydes and ketones, with diaryl diketone benzil as one of the best substrates. In addition the phylogenetic analysis of all enzyme types, which are known to facilitate benzil reduction, revealed at least two separate evolutionary clusters. Our results indicate the biotechnological potential of SDRs A5 and B3 for the production of chiral compounds with potential commercial value.

  19. Use of a packed-bed airlift reactor with net draft tube to study kinetics of naphthalene degradation by Ralstonia eutropha.

    Science.gov (United States)

    Jalilnejad, Elham; Vahabzadeh, Farzaneh

    2014-03-01

    Biodegradation of naphthalene by Ralstonia eutropha (also known as Cupriavidus necator) in a packed-bed airlift reactor with net draft tube (PBALR-nd) was studied; the Kissiris pieces were the packing material. The reactor hydrodynamics has been characterized under abiotic conditions and the dependencies of the superficial gas velocity (U G) on the gas holdup (εG), liquid mixing time, and mass transfer coefficient were determined. The improving role of the net draft tube in this small column reactor (height 42 cm, ID 5 cm) was confirmed. The flow regime was described using the εG α U G (n) expression, and bubbly flow was observed in PBALR-nd at U G kinetics of biodegradation was modeled using the Haldane and Aiba equations. The fitting of the experimental results to the models were done according to the nonlinear least square regression technique. The biokinetic constants (q m, K s, and K i) were estimated and q m as the specific biodegradation rate was equaled to 0.415 and 0.24 mgnaph./mgcell h for the Haldane and Aiba equations, respectively. The goodness of fit reported as R (2) and root-mean-square error (RMSE) showed the adequate fitness of the Haldane and Aiba models in predicting naphthalene biodegradation kinetics. On the basis of the HPLC results, a hypothetical pathway for the biodegradation was presented.

  20. Whole-Genome Microarray and Gene Deletion Studies Reveal Regulation of the Polyhydroxyalkanoate Production Cycle by the Stringent Response in Ralstonia eutropha H16

    Energy Technology Data Exchange (ETDEWEB)

    Brigham, CJ; Speth, DR; Rha, C; Sinskey, AJ

    2012-10-22

    Poly(3-hydroxybutyrate) (PHB) production and mobilization in Ralstonia eutropha are well studied, but in only a few instances has PHB production been explored in relation to other cellular processes. We examined the global gene expression of wild-type R. eutropha throughout the PHB cycle: growth on fructose, PHB production using fructose following ammonium depletion, and PHB utilization in the absence of exogenous carbon after ammonium was resupplied. Our results confirm or lend support to previously reported results regarding the expression of PHB-related genes and enzymes. Additionally, genes for many different cellular processes, such as DNA replication, cell division, and translation, are selectively repressed during PHB production. In contrast, the expression levels of genes under the control of the alternative sigma factor sigma(54) increase sharply during PHB production and are repressed again during PHB utilization. Global gene regulation during PHB production is strongly reminiscent of the gene expression pattern observed during the stringent response in other species. Furthermore, a ppGpp synthase deletion mutant did not show an accumulation of PHB, and the chemical induction of the stringent response with DL-norvaline caused an increased accumulation of PHB in the presence of ammonium. These results indicate that the stringent response is required for PHB accumulation in R. eutropha, helping to elucidate a thus-far-unknown physiological basis for this process.

  1. Vacinação contra influenza e pneumococo na insuficiência cardíaca: uma recomendação pouco aplicada

    Directory of Open Access Journals (Sweden)

    Wolney de Andrade Martins

    2011-03-01

    Full Text Available FUNDAMENTO: A insuficiência cardíaca (IC cursa com frequentes descompensações e admissões ao serviço de emergência. Vacinação contra Influenza (INF e Pneumococo (PNM são recomendadas nas diretrizes, entretanto, as infecções respiratórias são a terceira causa de hospitalização na IC. OBJETIVO: Avaliar a frequência da vacinação contra INF e PNM em pacientes com IC na rede pública. MÉTODOS: Em estudo observacional realizado em Teresópolis, região serrana fluminense, foram utilizadas três estratégias: (I estudo das requisições para vacina contra INF e/ou PNM na Secretaria Municipal de Saúde, entre 2004 e 2006; (II inquérito direto a 61 pacientes com IC atendidos na atenção básica sobre sua situação vacinal contra INF e PNM; (III inquérito direto sobre situação vacinal contra INF e PNM a 81 pacientes com IC crônica descompensada atendidos na única emergência aberta à rede pública. RESULTADOS: Na estratégia I, a vacinação contra INF e/ou PNM foi de 15,3% daqueles com indicações por doenças cardiovasculares e respiratórias. A mediana do tempo entre a indicação e a vacinação foi de 32 dias. Na estratégia II, o percentual de vacinados contra INF, com idade > 60 anos, foi de 23,1%, e de 24,6% contra PMN em todas as idades. Na estratégia III, o percentual de pacientes vacinados contra INF foi de 35,8% e contra PNM foi de 2,5%. CONCLUSÃO: A taxa de vacinação contra INF e PNM em pacientes com IC é muito baixa e ainda menor naqueles descompensados atendidos em serviço de emergência.

  2. Calidad de vida en cuidadores familiares de personas en tratamiento contra el cáncer

    Directory of Open Access Journals (Sweden)

    Henry Mauricio Puerto Pedraza

    2015-07-01

    Full Text Available Introducción: Describir la calidad de vida de los cuidadores familiares de personas en tratamiento contra el cáncer, en la Unidad de Oncología y Radioterapia del Hospital Universitario de Santander en Bucaramanga, durante el primer semestre del 2013. Materiales y Métodos: Estudio descriptivo de corte transversal: Se evaluaron 75 cuidadores familiares. Se utilizó el instrumento que toma el concepto del modelo de Calidad de vida versión familiar propuesto por Betty Ferrell. Para el análisis se utilizó estadística descriptiva y la regla de estratificación de Dalhenius y Hodges. Resultados: Los cuidadores son en mayoría mujeres de estratos socioeconómicos 1 y 2, de escolaridad primaria incompleta el 37,3%, el estado civil el 66,7% informó estar casados o en unión libre, de ocupación hogar 50,7%, con una mediana de 18 horas de cuidado a la persona con cáncer. La Calidad de vida global infiere que los cuidadores presentan una percepción de la calidad de vida media en (41,3%. Para las dimensiones del instrumento se reportó: puntajes medios para la salud física en (48%, psicológica (42%, social (45,3% y espiritual (44%. Discusión y Conclusiones: Es posible que los cuidadores familiares no se identifiquen por sus labores asistenciales como un cuidador más y no perciban ninguna alteración en su calidad de vida, a pesar que tengan manifestaciones físicas relacionadas a la carga de asistencia y cuidado.  Cómo citar este artículo: Puerto HM. Calidad de vida en cuidadores familiares de personas en tratamiento contra el cáncer. Rev Cuid. 2015; 6(2: 1029-40. http://dx.doi.org/10.15649/cuidarte.v6i2.154 

  3. Publicidad Contra la Violencia: Un Estudio de Recepción

    Directory of Open Access Journals (Sweden)

    Sara Elena Giraldo Villegas

    2014-01-01

    Full Text Available Recientemente se ha estado emitiendo en la televisión nacional de Colombia spots publicitarios generalmente conocidos como mensajes institucionales cuyos contenidos van en contra de las distintas formas de violencia, lo cual marca el inicio de campañas que incentivan la tolerancia y la convivencia pacífica. No obstante, es necesario conocer el resultado de esos mensajes, si han logrado su propósito, y si existe indiferencia ante la violencia real de los telespectadores. La emisión de estos spots pone de relieve la situación que el país ha vivido durante más de 50 años, sumido en la violencia guerrillera, paramilitar y de otras índoles, y se presume que estos mensajes deben propiciar una cultura ciudadana, una política de la inclusión con tolerancia, y facilitar escenarios de reconciliación familiar. El artículo se propone describir los diferentes impactos que generaron cuatro spots emitidos por Telecaribe, los cuales trataron de mostrar la violencia ejercida en niños-as, mujeres, ancianos-as y discapacitados, y en hombres adultos de las comunas 5 y 6 de la ciudad de Santa Marta.Palabras Clave: Publicidad contra la violencia; estudios de recepción; spots publicitarios; impacto; videos; constructivismo; cultura; cotidianidad; reconocimiento. Advertising violence: A Study of ReceptionAbstractRecently, publicity spots generally known as institutional messages with contents against the different forms of violence have been emitted in national television. This marks the beginning of campaigns that encourage tolerance and pacific coexistence. However, it’s necessary to know the result of those messages, if they have achieved their purpose, and if there is any indifference before the audience’s real violence. The broadcast of these spots highlights the country’s situation throughout more than 50 years of guerilla, paramilitary and other sources of violence; and it is presumed to propitiate tolerance culture, peace or civic culture

  4. Estado y nación durante el golpe contra Hugo Chávez

    Directory of Open Access Journals (Sweden)

    Coronil, Fernando

    2005-06-01

    Full Text Available This essay has two objetives. In the first place, it is a discussion of the development of the coup d’etat against Hugo Chávez during April 11th at 14th of 2002, focusing on the competing views of the opposition and supporters of the government in relation to three processes: the march against the violation of “meritocracia” in the oil industry (corporate criteria for selecting the managers of the state’s oil company, the massacre that took place on April 11th, and the act of proclamation of Pedro Carmona as president on April 12th. The essay examines in particular the choreography of these events and the changing conceptions of the nation and the state involved in these processes. Secondly, on the basis of this examination, the essay concludes with some theoretical observations concerning the state, its constitution, and the manner in which it exerts its hegemony.

    Este ensayo tiene dos objetivos. En primer lugar, es una discusión sobre el golpe de Estado contra Hugo Chávez que se desarrolló entre el 11 y el 14 de abril de 2002. Se enfoca en las contrapuestas visiones de la oposición y de los partidarios del gobierno en relación con tres procesos: la marcha en protesta contra la violación de la meritocracia petrolera, la masacre del 11 de abril y el acto de proclamación de Pedro Carmona como presidente el 12 de abril. Examina en particular la coreografia de estos eventos y la transformación de las concepciones de la nación y el Estado involucradas en estos procesos. En segundo lugar, sobre la base de esta examinación, el ensayo concluye con algunas observaciones teóricas sobre el Estado, su constitución y la forma como ejerce su hegemonía.

  5. La ciencia jovial: un ejercicio del derroche frente a la “guerra santa” contra el animal

    Directory of Open Access Journals (Sweden)

    Mónica Beatriz Cragnolini

    2012-10-01

    Full Text Available Para el artículo, la noción de ciencia jovial permite pensar otros modos de vinculación con el viviente animal, en la línea de una deconstrucción de los mecanismos apropiadores de la vida. Si la “guerra santa” contra el animal es, como muestra el texto, una “guerra contra el derroche”, una “ciencia generosa”, como la gaya ciencia, supone otro modo de encarar la relación con el viviente animal y con el animal que somos. En este sentido, se afirma que la “gaya ciencia” podría ser pensada, en un sentido político, como otra perspectiva para considerar las formas de ubicarnos en comunidad con todo lo viviente.

  6. Numerical analysis of head degrade law under cavitation condition of contra-rotating axial flow waterjet pump

    Science.gov (United States)

    Huang, D.; Pan, Z. Y.

    2015-01-01

    In order to study the flow-head characteristic curve, the SST turbulence model, homogeneous multiphase model and Rayleigh-Plesset equation were applied to simulate the cavitation characteristics in contra-rotating axial flow waterjet pump under different conditions based on ANSYS CFX software. The distribution of cavity, pressure coefficient of the blade at the design point under different cavitation conditions were obtained. The analysis results of flow field show that the vapour volume distribution on the impeller indicates that the vapour first appears at the leading edge of blade and then extends to the outlet of impeller with the reduction of Net Positive Suction Head Allowance (NPSHA). The present study illustrates that the main reason for the decline of the pump performance is the development of cavitation, and the simulation can truly reflect the cavitation performance of the contra-rotating axial flow waterjet pump.

  7. Imunogenicidade da vacina brasileira contra hepatite B em adultos Inmunogenicidad de la vacuna brasilera contra hepatitis B en adultos Immunogenicity of the Brazilian hepatitis B vaccine in adults

    Directory of Open Access Journals (Sweden)

    José Cássio de Moraes

    2010-04-01

    Full Text Available OBJETIVO: Avaliar a imunogenicidade e segurança da vacina contra hepatite B, após o aumento na concentração do antígeno HBsAg para 25 μg, em comparação à vacina de referência. MÉTODOS: Ensaio com alocação aleatória e mascaramento simples, comparando a VrHB-IB (Instituto Butantan com a vacina de referência (Engerix B®, Glaxo Smith Kline. Os voluntários, entre 31 e 40 anos de idade (n=419, foram alocados aleatoriamente ao grupo experimental (n=216 ou ao grupo controle (n=203, e receberam três doses de vacina. A primeira dose foi administrada no momento do recrutamento, a segunda e terceira 30 e 180 dias depois respectivamente, entre 2004 e 2005. Amostras de sangue foram colhidas para análise sorológica antes da randomização, e após a segunda e terceira doses. Foi realizada a vigilância ativa de eventos adversos durante os cinco primeiros dias após a vacinação. As diferenças foram avaliadas pelos testes do qui-quadrado e exato de Fisher, com nível de significância de 5%. RESULTADOS: Não se observaram eventos adversos graves. A soroporteção foi confirmada em 98,6% (213/216 dos voluntários do grupo experimental, em comparação a 95,6% (194/203 do grupo controle. Os títulos geométricos médios foram de 12.557 e 11.673, respectivamente. CONCLUSÕES: A vacina brasileira foi considerada equivalente à vacina de referência e seu uso recomendado para adultos.OBJETIVO: Evaluar la inmunogenicidad y seguridad de la vacuna contra hepatitis B, posterior al aumento en la concentración del antígeno HBsAg para 25mg, en comparación a la vacuna de referencia. MÉTODOS: Ensayo con distribución aleatoria y enmascaramiento simple, comparando la VrHB-IB (Instituto Butantan con la vacuna de referencia (Engerix BÒ, Glaxo Smith Kline. Los voluntarios, entre 31 y 40 años de edad (n=419, fueron distribuidos aleatoriamente en el grupo experimental (n=216 o en el grupo control (n=203, y recibieron tres dosis de la vacuna. La primera

  8. CONTRA: improving the performance of dynamic investigations in natural abundance organic solids by mirror-symmetric constant-time CODEX.

    Science.gov (United States)

    Reichert, Detlef; Pascui, Ovidiu; Bonagamba, Tito J; Belton, Peter; Schmidt, Asher; deAzevedo, Eduardo Ribeiro

    2008-03-01

    We present a minor but essential modification to the CODEX 1D-MAS exchange experiment. The new CONTRA method, which requires minor changes of the original sequence only, has advantages over the previously introduced S-CODEX, since it is less sensitive to artefacts caused by finite pulse lengths. The performance of this variant, including the finite pulse effect, was confirmed by SIMPSON calculations and demonstrated on a number of dynamic systems. PMID:18155935

  9. Infectividad de Metarhizium anisopliae en contra de cepas de garrapata Boophilus microplus sensible y resistente a los organofosforados

    OpenAIRE

    Manuel Fernández-Ruvalcaba; Elyes Zhioua; Zeferino García-Vázquez

    2005-01-01

    La infectividad del hongo entomopatogénico Metarhizium anisopliae (Metschnikoff) fue probada en contra de una cepa de Boophilus microplus (Canestrini) sensible, y otra resistente a los organofosforados, por medio de un ensayo in vitro con hembras ingurgitadas de B. microplus recién desprendidas del bovino, utilizando la cepa ECS1 de M. anisopliae. El micromiceto M. anisopliae demostró ser altamente infectivo, tanto para la cepa sensible como para la resistente a los organofosforados a la conc...

  10. 姬松茸多糖对铅中毒大鼠铅代谢及体内铜、钙、锌、铁、锰含量的影响%EFFECTS OF AGARICUS BLAZEI MUILL POLYSACCHARIDES ON LEAD METABOLISM AND THE CONTENTS OF COPPER, CALCIUM, ZINC, IRON AND MANGANESE IN LEAD-POISONING RATS

    Institute of Scientific and Technical Information of China (English)

    程红艳; 冯翠萍; 王伟娟; 常明昌; 孟俊龙; 冯两蕊

    2012-01-01

    目的 了解姬松茸多糖(Agaricus blazei Murrill polysaccharides,ABP)对Pb中毒大鼠体内Pb、Cu、Ca、Zn、Fe、Mn含量的影响.方法 选择健康45日龄SD大鼠48只,随机分为6组,每组8只,雌雄各半,分别为正常对照组、Pb中毒组、多糖组、Pb中毒+低剂量多糖干预组、Pb中毒+中剂量多糖干预组和Pb中毒+高剂量多糖干预组.Pb中毒组和Pb中毒+多糖干预组都给予0.2%醋酸铅溶液,自由饮用,其它组给予蒸馏水.多糖、低剂量、中剂量及高剂量组分别按每天每只100、50、100、200mg/kg体重灌服姬松茸多糖液,各组灌服液体积相等,为1ml.正常对照组和Pb中毒组每天每只灌胃2ml的生理盐水.饲养60d后,取大鼠肝脏、肾脏、心脏和血,分别测定Pb、Cu、Ca、Zn、Fe、Mn含量.结果 (1)与正常对照组比较,Pb中毒组各组织和三个多糖干预组中肝脏、肾脏和血中Pb含量升高,差异具有统计学意义(P<0.01),Pb中毒组心脏中的Ca、血中的Fe含量升高(P<0.05或P<0.01),其余均下降(P<0.05或P<0.01),多糖组中肾脏和心脏中的Ca,血中的Fe略有下降,其余均略有升高,差异无统计学意义.(2)与Pb中毒组比较,低剂量多糖显著降低血铅含量(P<0.01),中剂量多糖显著降低心脏中铅含量(P<0.01),其他组织铅含量差异无统计学意义,随着ABP剂量的升高,三个多糖干预组中心脏中的Ca和血中的Fe的含量逐渐降低,而其他指标均逐渐升高,当ABP剂量达到200mg/kg时,显著下降或升高(P<0.05或P<0.01).结论 姬松茸多糖促进Pb的排出,对Pb致大鼠微量元素失衡具有调节作用.%Objective To investigate the effects of Agaricus blazei Murrill polysaccharides (ABP) on Pb metabolism and the contents of Pb, Cu, Ca, Zn, Fe and Mn in lead-poisoning rats. Method Forty eight healthy 45 d SD rats were randomly divided into 6 groups (female ; male=1:1): control group, ABP group, lead-poisoning group, lead+low-dose ABP group

  11. Meios de comunicação impressos, representações sociais e violência contra idosos

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    Evelyn Rúbia de Albuquerque Saraiva

    2012-06-01

    Full Text Available Objetivou-se apreender as representações sociais da violência e dos maus-tratos contra os idosos divulgadas pela mídia impressa paulista e paraibana. Foi realizada uma pesquisa documental com 126 notícias dos jornais Folha de S. Paulo e O Norte (Paraíba, cujos textos foram analisados pelas classificações hierárquicas descendente e ascendente processadas pelo software Alceste. As representações sociais sobre a violência contra os idosos apresentaram-se polarizadas entre os dois jornais: no paraibano destacaram-se as temáticas dos direitos e das políticas públicas, e no paulista, emergiu a concepção de violência, em relação aos idosos, como vítimas, e em relação aos seus agressores, como uma questão policial. Infere-se que a produção e difusão de conhecimentos por intermédio dos jornais desvelam nas representações sociais hegemônicas da sociedade certa pressão sobre os sujeitos sociais, demandando intervenções psicossociais em diversos segmentos desta sociedade, principalmente em se tratando de um fenômeno extremamente complexo como o é a violência contra idosos.

  12. LA VIOLENCIA CONTRA LAS MUJERES EN LAS PRODUCCIONES DE LA COMISIÓN Y LA CORTE INTERAMERICANA DE DERECHOS HUMANOS

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    Laura Clérico

    2014-01-01

    Full Text Available l trabajo identifica y analiza los estándares que surgen de las producciones de la CIDH y de la Corte IDH respecto de: la definición de violencia contra las mujeres/de género; la calificación de los actos u omisiones que implican violaciones a los derechos humanos y como expresión de la desigualdad de poder; las obligaciones estatales y medidas reparatorias para erradicar la violencia de género. El análisis identifica avances en la incorporación de la perspectiva de género en las producciones del SIDH; sin embargo, asimismo devela que aún es restringida la concepción de violencia contra las mujeres aplicada por la Corte IDH al estar aún muy centrada en la violencia sexual y no ampliarse a otros aspectos; también alerta que el énfasis puesto en la medida reparatoria de acceso a la justicia opaca pensar en otras acciones adecuadas para la erradicación de la violencia contra las mujeres.

  13. Los nuevos escenarios para la cooperación en la lucha contra el terrorismo internacional

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    Sorasio, Denise

    2002-06-01

    Full Text Available Not available

    El terrorismo constituye una de las amenazas mas serias para la democracia, para el libre ejercicio de los derechos del hombre y para el desarrollo económico y social. Los acontecimientos del 11 de septiembre mostraron que el terrorismo es una amenaza real a nivel mundial y que cualquier país podía ser afectado por ataques terroristas. Es un verdadero reto para el mundo y para Europa. La Unión Europea se fijó como objetivo en el tratado de la UE «ofrecer a los ciudadanos un alto grado de seguridad dentro de un espolio de libertad, seguridad y justicia elaborando una acción en común entre los Estados miembros en los ámbitos de la cooperación policial y judicial en materia penal...». Este objetivo ha de lograrse mediante la prevención y la lucha contra la delincuencia, organizada o no, en particular el terrorismo a través de una mayor cooperación entre las fuerzas policiales, las autoridades aduaneras y otras autoridades competentes de los Estados miembros, como entre les autoridades judiciales y, también, por la aproximación, cuando proceda, de las normas de los Estados miembro en materia penal.

  14. Diagnóstico diferencial en la encefalitis por anticuerpos contra el receptor NMDA

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    González-Valcárcel, J.; Rosenfeld, M.R.; Dalmau, J.

    2011-01-01

    Resumen Introducción La encefalitis por anticuerpos contra el receptor de NMDA (NMDAR) suele desarrollarse como un síndrome característico de evolución multifásica y diagnóstico diferencial amplio. Pacientes Presentamos a 2 pacientes diagnosticadas de encefalitis por anticuerpos NMDAR con un cuadro clínico típico, pero que inicialmente señaló otras etiologías. Discusión La afectación frecuente de pacientes jóvenes con manifestaciones psiquiátricas prominentes indica frecuentemente otras consideraciones diagnósticas; las más frecuentes son las encefalitis virales, los procesos psiquiátricos y el síndrome neuroléptico maligno. Varios síndromes previamente definidos de manera parcial o descriptiva en adultos y pacientes pediátricos probablemente eran casos de encefalitis anti-NMDAR. Conclusiones La encefalitis anti-NMDAR debe considerarse en pacientes jóvenes con manifestaciones psiquiátricas subagudas, movimientos anormales y alteraciones autonómicas. La caracterización clínica e inmunológica de esta enfermedad ha llevado a la identificación de nuevos anticuerpos que afectan a procesos de memoria, aprendizaje, conducta y psicosis. PMID:20964986

  15. Habilidades sociais: fator de proteção contra transtornos alimentares em adolescentes

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    Laura Giron Uzunian

    2015-11-01

    Full Text Available Resumo O objetivo desse estudo foi revisar a literatura a cerca da relação entre transtornos alimentares e habilidades sociais em adolescentes. Pesquisou-se as bases de dados Medline, SciELO e Lilacs, cruzando os descritores “transtornos alimentares”, “anorexia nervosa”, “bulimia nervosa” e “comportamento alimentar”, com os descritores “psicologia social” e “isolamento social”, e com as palavras chave “competência social”, “habilidade social” e “relação interpessoal”. Incluiu-se estudos com adolescentes, nos idiomas português, inglês e espanhol, e publicações realizadas entre os anos de 2007 a 2012. A busca resultou em 63 artigos, sendo incluídos 50 nesta revisão. A maioria dos estudos foi conduzido no Brasil e nos Estados Unidos. Do total, 43 eram artigos originais. Os estudos visavam compreender como o estado emocional poderia influenciar no estabelecimento dos transtornos alimentares, assim como as relações interpessoais e a relação entre os pares. Os artigos também discutiram a influência da mídia e da sociedade neste processo. A partir da análise dos estudos, observou-se que quanto maior o repertório de habilidades sociais dos adolescentes, maior será o fator de proteção contra o desenvolvimento de transtornos alimentares.

  16. LUCHANDO INFRUCTUOSAMENTE CONTRA LA HIDRA: UN MODELO SENCILLO DEL NARCOTRÁFICO

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    Carlos Humberto Ortiz

    2002-12-01

    Full Text Available En este artículo se presenta un modelo sencillo del narcotráfico que incorpora los riesgos de esta actividad. El modelo contribuye a explicar dos características notables del narcotráfico: la generación de ganancias extraordinarias y la gran capacidad de reproducción en condiciones de prohibición y represión. El modelo genera una relación directa entre la represión a la oferta -la estrategia dominante de lucha contra el narcotráfico- y las características mencionadasA simple model of drug trafficking, which embodies this activity risks, is shown in this paper. The model helps to explain two stylized facts of this activity: the generation of extraordinary profits and strong reproduction ability under prohibition and repression. The model creates a direct link between the repression of supply, which has been the dominant strategy in the fight against drug trafficking, and the mentioned facts.

  17. Predictores Psicosociales de Delitos contra la Seguridad Vial: Un Estudio con Internos de un Centro Penitenciario

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    Félix Herraiz Gonzalo

    2011-01-01

    Full Text Available En el Centro Penitenciario de Hombres de Barcelona ha habido un aumento creciente de ingresos por delitos contra la seguridad vial. El objetivo de esta investigación es obtener un perfil psicológico en una muestra de 115 internos, analizar cuáles son los predictores en la conducción agresiva, y finalmente contrastar la posible existencia de diferentes tipologías, en función de la ausencia o presencia de otros delitos, con o sin componentes agresivos. Los resultados muestran que las causas o estados que causan irritación, los antecedentes familiares de conducción agresiva y la presencia de trastornos psiquiátricos son predictores de la conducta agresiva en la conducción, así como la agresividad física es también un predictor de los accidentes. No hay diferencias en internos que también presentan otras tipologías delictivas.

  18. La educación social contra la exclusión: la interculturalidad

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    Matías Bedmar Moreno

    2002-01-01

    Full Text Available El artículo analiza las circunstancias sociales que generan la exclusión, ocasionada por la grandes desigualdades que se dan, tanto entre los países ricos y pobres como dentro de una inisnia sociedad, entre sus diferentes clases. Una de sus consecuencias es el fénomeno de la inmigración hacia el Primer Mundo, en busca de unas condiciones de vida favorables. Se trata del papel que desempeña la Educación Social como medio de integración, para luchar contra la doble exclusión a que se ven sometidos los inmigrantes en los países de acogida, donde se generan problemas de convivencia entre la población, que muestra actitudes xenofobas y falta de respeto a otras culturas, por lo que necesita ser educada socialmente, para generar actitudes de solidaridad, tolerancia y convivencia. Se muestran experiencias de educación intercultural que fomentan la solidaridad y el respeto mutuo, al mismo tiempo que facilitan la integración social de los inmigrantes, con programas integrates que fomentan ademas el empleo, la salud, la vivienda, el asesoramiento jurídico, etc. donde actúan coordinadamente centros de educación de adultos y ONG.

  19. Nordic Walking, modalidad terapéutica contra la fatiga relativa al cáncer

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    Cristina González Castro

    2014-11-01

    Full Text Available Normal 0 21 false false false ES X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} Existe evidencia de que el ejercicio físico puede mejorar los síntomas de los pacientes y supervivientes de cáncer y en especial la fatiga relativa al cáncer (FRC. El Nordic Walking (NW es una novedosa forma de ejercicio físico que presenta ventajas fisiológicas y psicológicas significativas respecto de la marcha normal. Este artículo propone el NW como tratamiento terapéutico alternativo contra la FRC. 

  20. Las residencias frustradas. El juez Domingo de Irazusta contra el cabildo de Salta

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    Ana Mar\\u00EDa Lorandi

    2000-01-01

    Full Text Available El trabajo plantea los problemas derivados de una tenaz resistencia emprendida por el Cabildo de Salta entre 1724 y 1734, para impedir que el Juez Don Domingo de Irazusta y Orozco tomase las residencias del gobernador Urízar y de sus sucesores y de todos los funcionarios que acompañaron esas gestiones. El conflicto se ventila en la Audiencia de Charcas, en Lima y en el Consejo de Indias. El Cabildo acusa al juez de haber provocado facciones en la ciudad, de ser enemigo capital de la mayoría de sus miembros y aducen que no pueden pagar las multas que les impone el Juez a causa de los ingentes gastos que deben afrontar por la guerra contra las tribus del Chaco. La trama del conflicto revela los enconos existentes entre los grupos que dominan el Cabildo de Salta, y sobre todo el rechazo a acatar la nueva política borbónica, que intentaba ejercer un control más estrecho sobre la vida institucional de sus colonias. Los cabildos reflejan los intereses locales y la fuerte competencia establecida con el poder metropolitano.

  1. Violência contra a mulher e políticas públicas

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    Blay Eva Alterman

    2003-01-01

    Full Text Available DIFERENTEMENTE dos inúmeros estudos existentes, de excelente qualidade, esta pesquisa busca investigar não apenas a chamada violência doméstica mas os vários tipos de homicídio - tentativa ou consumação - de mulheres, de todas as faixas etárias. Ela investigou e procurou comparar como este crime era tratado: 1. pela mídia (especialmente jornais de 1991 e de 2000; pelo rádio e televisão; 2. nos Boletins de Ocorrência das Delegacias de Policia da capital de São Paulo (do ano de 1998; 3. nos Processos Judiciais, através de uma amostra representativa dos cinco Tribunais do Júri da Capital de São Paulo (de 1997. Desejava saber como a mídia tão resistente a principio se comportava na passagem do século XXI face à violência contra a mulher, o que os BOs registravam e como eram julgados os assassinos/as de mulheres. Os complexos resultados obtidos revelaram mudanças em alguns segmentos e um concomitante mecanismo que retroalimenta a antiga violência nas relações sociais de gênero. Concluindo propõe-se a implantação de uma política transversal de gênero para enfrentar a violência.

  2. Efecto antibacteriano in vitro de exudados foliares de tabaco contra dos bacterias fitopatógenas

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    Yanelis Karina Capdesuñer

    2015-05-01

    Full Text Available Título en ingles: In vitro antibacterial effect of tobacco leaf exudates against two bacterial plant pathogensTítulo corto: Efecto antibacteriano in vitro de exudados foliares de tabacoResumen: Los productos naturales son una alternativa para el control de microorganismos que ocasionan enfermedades en los cultivos. Este trabajo tuvo como objetivo evaluar diferentes solventes para la obtención de extractos crudos a partir de exudados foliares de líneas de tabaco, y el efecto in vitro de estos extractos contra dos bacterias fitopatógenas: Xanthomonas campestris (Xc y Pectobacterium carotovorum (Pc. Se evaluaron solventes con polaridades entre 3.1 y 6.2 (diclorometano,  n-butanol,  acetato de etilo,  metanol y  etanol 90 %. El etanol 90 % se seleccionó como mejor solvente y como sustituto del diclorometano por su mayor rendimiento. Los extractos etanólicos crudos se obtuvieron a partir de exudados foliares de diez líneas de tabaco seleccionadas.  La diversidad de la composición química de los extractos etanólicos se reveló por cromatografía en capa delgada. La actividad antibacteriana se evaluó por el método de difusión en agar con discos de papel de filtro y la medición del diámetro del halo de inhibición. Se observó inhibición para todos los extractos contra Xc destacándose los correspondientes a las líneas Nic 1061 “TI 1738” y Nic 1016 “Incekara” hasta 5 µg de extracto crudo seco /disco, con un mayor rendimiento para la línea Nic 1061. El extracto de la línea Nic 1015 fue el único con actividad contra Pc hasta 5 µg de extracto crudo seco  por disco. Estos resultados sugieren un uso potencial de los extractos crudos de las líneas Nic 1061 y Nic 1015 “TI 1341” como un agente efectivo para la protección de cultivos contra estas bacterias.Palabras clave: fitopatógenos, Nicotiana tabacum, protección de cultivos, solventes, superficie foliar.Abstract: Natural products are an alternative to control

  3. Homens, gênero e violência contra a mulher Men, gender and violence against women

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    Daniel Costa Lima

    2008-06-01

    Full Text Available Considerando o compromisso do Estado brasileiro de coibir e prevenir a violência contra a mulher, firmado em várias conferências internacionais e tendo em vista a promulgação da Lei 11.340/06 - a Lei Maria da Penha -, este artigo tem como objetivo realizar uma reflexão sobre a incorporação dos homens e da perspectiva de gênero nos esforços de prevenção e atenção à violência contra as mulheres. Apesar do crescente interesse da literatura científica e da intervenção em saúde com o envolvimento dos homens, em especial, no campo dos direitos sexuais e reprodutivos, comparativamente, reflexões e intervenções com homens autores de violência contra a mulher têm recebido bem menos atenção de órgãos governamentais, não-governamentais e pela academia. O artigo apresenta alguns conceitos e dados sobre a violência contra as mulheres e descreve um panorama sobre a conexão entre gênero, saúde e masculinidades; analisa trabalhos que abordam os temas homens e violência contra as mulheres e apresenta algumas ações voltadas à prevenção dessa forma de violência junto à população masculina; e por fim tece algumas considerações finais sobre o tema.Considering the commitment made by the Brazilian Government to restrain and prevent violence against women, signed in various international conferences, and in view of the promulgation of the Law 11.340/06 - Lei Maria da Penha -, this article intends to develop a reflection on the incorporation of men and of the gender perspective in efforts to prevent and attend to violence against women. Despite the increasing interest of scientific literature and health intervention in the involvement of men, especially in the field of sexual and reproductive rights, comparatively, reflections and interventions directed at men who have committed violence against women have received far less attention from governmental and non-governmental institutions, and from the academy. The article

  4. Effects of volatile organic compounds produced by Bacillus amyloliquefaciens on the growth and virulence traits of tomato bacterial wilt pathogen Ralstonia solanacearum.

    Science.gov (United States)

    Raza, Waseem; Wang, Jichen; Wu, Yuncheng; Ling, Ning; Wei, Zhong; Huang, Qiwei; Shen, Qirong

    2016-09-01

    The production of volatile organic compounds (VOCs) by microbes is an important characteristic for their selection as biocontrol agents against plant pathogens. In this study, we identified the VOCs produced by the biocontrol strain Bacillus amyloliquefaciens T-5 and evaluated their impact on the growth and virulence traits of tomato bacterial wilt pathogen Ralstonia solanacearum. The results showed that the VOCs of strain T-5 significantly inhibited the growth of R. solanacearum in agar medium and in soil. In addition, VOCs significantly inhibited the motility traits, root colonization, biofilm formation, and production of antioxidant enzymes and exopolysaccharides by R. solanacearum. However, no effect of VOCs on the production of hydrolytic enzymes by R. solanacearum was observed. The strain T-5 produced VOCs, including benzenes, ketones, aldehydes, alkanes, acids, and one furan and naphthalene compound; among those, 13 VOCs showed 1-10 % antibacterial activity against R. solanacearum in their produced amounts by T-5; however, the consortium of all VOCs produced on agar medium, in sterilized soil, and in natural soil showed 75, 62, and 85 % growth inhibition of R. solanacearum, respectively. The real-time PCR analysis further confirmed the results when the expression of different virulence- and metabolism-related genes in R. solanacearum cells was decreased after exposure to the VOCs of strain T-5. The results of this study clearly revealed the significance of VOCs in the control of plant pathogens. This information would help to better comprehend the microbial interactions mediated by VOCs in nature and to develop safer strategies to control plant disease. PMID:27183998

  5. CaCDPK15 positively regulates pepper responses to Ralstonia solanacearum inoculation and forms a positive-feedback loop with CaWRKY40 to amplify defense signaling.

    Science.gov (United States)

    Shen, Lei; Yang, Sheng; Yang, Tong; Liang, Jiaqi; Cheng, Wei; Wen, Jiayu; Liu, Yanyan; Li, Jiazhi; Shi, Lanping; Tang, Qian; Shi, Wei; Hu, Jiong; Liu, Cailing; Zhang, Yangwen; Mou, Shaoliang; Liu, Zhiqin; Cai, Hanyang; He, Li; Guan, Deyi; Wu, Yang; He, Shuilin

    2016-01-01

    CaWRKY40 is a positive regulator of pepper (Capsicum annum) response to Ralstonia solanacearum inoculation (RSI), but the underlying mechanism remains largely unknown. Here, we functionally characterize CaCDPK15 in the defense signaling mediated by CaWRKY40. Pathogen-responsive TGA, W, and ERE boxes were identified in the CaCDPK15 promoter (pCaCDPK15), and pCaCDPK15-driven GUS expression was significantly enhanced in response to RSI and exogenously applied salicylic acid, methyl jasmonate, abscisic acid, and ethephon. Virus-induced gene silencing (VIGS) of CaCDPK15 significantly increased the susceptibility of pepper to RSI and downregulated the immunity-associated markers CaNPR1, CaPR1, and CaDEF1. By contrast, transient CaCDPK15 overexpression significantly activated hypersensitive response associated cell death, upregulated the immunity-associated marker genes, upregulated CaWRKY40 expression, and enriched CaWRKY40 at the promoters of its targets genes. Although CaCDPK15 failed to interact with CaWRKY40, the direct binding of CaWRKY40 to pCaCDPK15 was detected by chromatin immunoprecipitation, which was significantly potentiated by RSI in pepper plants. These combined results suggest that RSI in pepper induces CaCDPK15 and indirectly activates downstream CaWRKY40, which in turn potentiates CaCDPK15 expression. This positive-feedback loop would amplify defense signaling against RSI and efficiently activate strong plant immunity. PMID:26928570

  6. Defining the Metabolic Functions and Roles in Virulence of the rpoN1 and rpoN2 Genes in Ralstonia solanacearum GMI1000.

    Science.gov (United States)

    Lundgren, Benjamin R; Connolly, Morgan P; Choudhary, Pratibha; Brookins-Little, Tiffany S; Chatterjee, Snigdha; Raina, Ramesh; Nomura, Christopher T

    2015-01-01

    The alternative sigma factor RpoN is a unique regulator found among bacteria. It controls numerous processes that range from basic metabolism to more complex functions such as motility and nitrogen fixation. Our current understanding of RpoN function is largely derived from studies on prototypical bacteria such as Escherichia coli. Bacillus subtilis and Pseudomonas putida. Although the extent and necessity of RpoN-dependent functions differ radically between these model organisms, each bacterium depends on a single chromosomal rpoN gene to meet the cellular demands of RpoN regulation. The bacterium Ralstonia solanacearum is often recognized for being the causative agent of wilt disease in crops, including banana, peanut and potato. However, this plant pathogen is also one of the few bacterial species whose genome possesses dual rpoN genes. To determine if the rpoN genes in this bacterium are genetically redundant and interchangeable, we constructed and characterized ΔrpoN1, ΔrpoN2 and ΔrpoN1 ΔrpoN2 mutants of R. solanacearum GMI1000. It was found that growth on a small range of metabolites, including dicarboxylates, ethanol, nitrate, ornithine, proline and xanthine, were dependent on only the rpoN1 gene. Furthermore, the rpoN1 gene was required for wilt disease on tomato whereas rpoN2 had no observable role in virulence or metabolism in R. solanacearum GMI1000. Interestingly, plasmid-based expression of rpoN2 did not fully rescue the metabolic deficiencies of the ΔrpoN1 mutants; full recovery was specific to rpoN1. In comparison, only rpoN2 was able to genetically complement a ΔrpoN E. coli mutant. These results demonstrate that the RpoN1 and RpoN2 proteins are not functionally equivalent or interchangeable in R. solanacearum GMI1000. PMID:26659655

  7. Defining the Metabolic Functions and Roles in Virulence of the rpoN1 and rpoN2 Genes in Ralstonia solanacearum GMI1000.

    Directory of Open Access Journals (Sweden)

    Benjamin R Lundgren

    Full Text Available The alternative sigma factor RpoN is a unique regulator found among bacteria. It controls numerous processes that range from basic metabolism to more complex functions such as motility and nitrogen fixation. Our current understanding of RpoN function is largely derived from studies on prototypical bacteria such as Escherichia coli. Bacillus subtilis and Pseudomonas putida. Although the extent and necessity of RpoN-dependent functions differ radically between these model organisms, each bacterium depends on a single chromosomal rpoN gene to meet the cellular demands of RpoN regulation. The bacterium Ralstonia solanacearum is often recognized for being the causative agent of wilt disease in crops, including banana, peanut and potato. However, this plant pathogen is also one of the few bacterial species whose genome possesses dual rpoN genes. To determine if the rpoN genes in this bacterium are genetically redundant and interchangeable, we constructed and characterized ΔrpoN1, ΔrpoN2 and ΔrpoN1 ΔrpoN2 mutants of R. solanacearum GMI1000. It was found that growth on a small range of metabolites, including dicarboxylates, ethanol, nitrate, ornithine, proline and xanthine, were dependent on only the rpoN1 gene. Furthermore, the rpoN1 gene was required for wilt disease on tomato whereas rpoN2 had no observable role in virulence or metabolism in R. solanacearum GMI1000. Interestingly, plasmid-based expression of rpoN2 did not fully rescue the metabolic deficiencies of the ΔrpoN1 mutants; full recovery was specific to rpoN1. In comparison, only rpoN2 was able to genetically complement a ΔrpoN E. coli mutant. These results demonstrate that the RpoN1 and RpoN2 proteins are not functionally equivalent or interchangeable in R. solanacearum GMI1000.

  8. Moderate temperature fluctuations rapidly reduce the viability of Ralstonia solanacearum race 3, biovar 2, in infected geranium, tomato, and potato plants.

    Science.gov (United States)

    Scherf, Jacob M; Milling, Annett; Allen, Caitilyn

    2010-11-01

    Most Ralstonia solanacearum strains are tropical plant pathogens, but race 3, biovar 2 (R3bv2), strains can cause bacterial wilt in temperate zones or tropical highlands where other strains cannot. R3bv2 is a quarantine pathogen in North America and Europe because of its potential to damage the potato industry in cooler climates. However, R3bv2 will not become established if it cannot survive temperate winters. Previous experiments showed that in water at 4°C, R3bv2 does not survive as long as native U.S. strains, but R3bv2 remains viable longer than U.S. strains in potato tubers at 4°C. To further investigate the effects of temperature on this high-concern pathogen, we assessed the ability of R3bv2 and a native U.S. strain to survive typical temperate winter temperature cycles of 2 days at 5°C followed by 2 days at -10°C. We measured pathogen survival in infected tomato and geranium plants, in infected potato tubers, and in sterile water. The population sizes of both strains declined rapidly under these conditions in all three plant hosts and in sterile water, and no culturable R. solanacearum cells were detected after five to seven temperature cycles in plant tissue. The fluctuations played a critical role in loss of bacterial viability, since at a constant temperature of -20°C, both strains could survive in infected geranium tissue for at least 6 months. These results suggest that even when sheltered in infected plant tissue, R3bv2 is unlikely to survive the temperature fluctuations typical of a northern temperate winter.

  9. Cometabolic degradation of ethyl mercaptan by phenol-utilizing Ralstonia eutropha in suspended growth and gas-recycling trickle-bed reactor.

    Science.gov (United States)

    Sedighi, Mahsa; Zamir, Seyed Morteza; Vahabzadeh, Farzaneh

    2016-01-01

    The degradability of ethyl mercaptan (EM), by phenol-utilizing cells of Ralstonia eutropha, in both suspended and immobilized culture systems, was investigated in the present study. Free-cells experiments conducted at EM concentrations ranging from 1.25 to 14.42 mg/l, showed almost complete removal of EM at concentrations below 10.08 mg/l, which is much higher than the maximum biodegradable EM concentration obtained in experiments that did not utilize phenol as the primary substrate, i.e. 2.5 mg/l. The first-order kinetic rate constant (kSKS) for EM biodegradation by the phenol-utilizing cells (1.7 l/g biomass/h) was about 10 times higher than by cells without phenol utilization. Immobilized-cells experiments performed in a gas recycling trickle-bed reactor packed with kissiris particles at EM concentrations ranging from 1.6 to 36.9 mg/l, showed complete removal at all tested concentrations in a much shorter time, compared with free cells. The first-order kinetic rate constant (rmaxKs) for EM utilization was 0.04 l/h for the immobilized system compared to 0.06 for the suspended-growth culture, due to external mass transfer diffusion. Diffusion limitation was decreased by increasing the recycling-liquid flow rate from 25 to 65 ml/min. The removed EM was almost completely mineralized according to TOC and sulfate measurements. Shut down and starvation experiments revealed that the reactor could effectively handle the starving conditions and was reliable for full-scale application.

  10. Aplicación de la técnica de PCR en la detección de Ralstonia solanacearum en campos paperos

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    Analía Sanabria

    2013-01-01

    Full Text Available La murchera de la papa causada por Ralstonia solanacearum es una amenaza permanente para el cultivo con consecuencias devastadoras en condiciones predisponentes. La incidencia de esta enfermedad en Uruguay es variable; desde la década de 1970 se registran brotes agudos periódicos difíciles de prevenir y controlar. Se ha detectado a R. solanacearumen todas las regiones de producción, lo que dificulta el mantenimiento de áreas libres de patógeno y la continuidad del cultivo. Dado que no existen agentes químicos efectivos, las estrategias de control apuntan a la prevención, recomendando la rotación de cultivos, la desinfección de herramientas y el uso de semilla certificada libre del patógeno. En este trabajo se optimizó la detección molecular de R. solanacearum en suelo mediante PCR con el objetivo de conocer la persistencia del patógeno en el campo. El método se aplicó al análisis de tres campos con diferentes antecedentes de murchera, y se demostró que el patógeno es capaz de permanecer viable por más de 10 años. También se determinaron las ventajas y limitaciones de esta metodología en su aplicación a muestras complejas. Estos resultados constituyen un importante aporte que genera conocimiento que permitirá a los productores delinear mejores estrategias para el manejo de la enfermedad al momento de planificar los cultivos.

  11. The vascular plant-pathogenic bacterium Ralstonia solanacearum produces biofilms required for its virulence on the surfaces of tomato cells adjacent to intercellular spaces.

    Science.gov (United States)

    Mori, Yuka; Inoue, Kanako; Ikeda, Kenichi; Nakayashiki, Hitoshi; Higashimoto, Chikaki; Ohnishi, Kouhei; Kiba, Akinori; Hikichi, Yasufumi

    2016-08-01

    The mechanism of colonization of intercellular spaces by the soil-borne and vascular plant-pathogenic bacterium Ralstonia solanacearum strain OE1-1 after invasion into host plants remains unclear. To analyse the behaviour of OE1-1 cells in intercellular spaces, tomato leaves with the lower epidermis layers excised after infiltration with OE1-1 were observed under a scanning electron microscope. OE1-1 cells formed microcolonies on the surfaces of tomato cells adjacent to intercellular spaces, and then aggregated surrounded by an extracellular matrix, forming mature biofilm structures. Furthermore, OE1-1 cells produced mushroom-type biofilms when incubated in fluids of apoplasts including intercellular spaces, but not xylem fluids from tomato plants. This is the first report of biofilm formation by R. solanacearum on host plant cells after invasion into intercellular spaces and mushroom-type biofilms produced by R. solanacearum in vitro. Sugar application led to enhanced biofilm formation by OE1-1. Mutation of lecM encoding a lectin, RS-IIL, which reportedly exhibits affinity for these sugars, led to a significant decrease in biofilm formation. Colonization in intercellular spaces was significantly decreased in the lecM mutant, leading to a loss of virulence on tomato plants. Complementation of the lecM mutant with native lecM resulted in the recovery of mushroom-type biofilms and virulence on tomato plants. Together, our findings indicate that OE1-1 produces mature biofilms on the surfaces of tomato cells after invasion into intercellular spaces. RS-IIL may contribute to biofilm formation by OE1-1, which is required for OE1-1 virulence. PMID:26609568

  12. Differential Space-Time Expression of StLTPb1 Gene Between Resistant and Susceptible Potato Genotypes in Response to Ralstonia solanacearum

    Institute of Scientific and Technical Information of China (English)

    GAO Gang; JIN Li-ping; XIE Kai-yun; QU Dong-yu

    2008-01-01

    This study is to investigate the role of lipid transfer protein (LTP1) gene of potato (Solanum tuberosum) in bacterial wilt (Ralstonia solanacearum) resistance. A novel cDNA clone encoding nsLTP was isolated from cultivated potato (Solanum tuberosum) infected with R. solanacearum by 5'-rapid amplification of cDNA ends (RACE). The temporal and spatial expression of StLTPb1 was studied during the early stages of potato-R. solanacearum interaction by reverse transcriptase PCR (RT-PCR) and Northern blotting. The sequence analysis of the cloned cDNA, named StLTPb1, showed 691 bp which encoded a type 1 nsLTP of 91 amino acids. Construction of a phylogenic tree showed that StLTPb1 is well conserved in the coding region with high identity at the amino acid level with other Solanaceae nsLTPs. The temporal and spatial expression of StLTPb1 was studied during the early stages of potato-R, solanacearum interaction. StLTPb1 transcription is induced faster and transcripts accumulate to higher concentrations in resistant compared with susceptible genotypes by the pathogen. Dominant differences in the pathogen-induced gene expression pattern between the upper and lower leaves and stems were observed within the same genotypes. In situ hybridization results showed that the StLTPb1 mRNA was localized in phloem cells of vascular tissues in potato leaf and stem tissues after pathogen infection. Salicylic acid, methyl jasmonate and abscisic acid could induce StLTPb1 gene expression without significant difference between the upper and lower tissues. These abiotic elicitors could produce a long-lasting effect on the StLTPb1 during early stages of potato-R. solanacearum interaction. Differential expression of StLTPb1 gene between resistance and susceptible potato genotypes in response to R. solanacearum suggests that this gene plays a key role in plant defense mechanisms.

  13. Bactérias endofíticas como agentes promotores do crescimento de plantas de tomateiro e de inibição in vitro de Ralstonia solanacearum Endophytic bacteria as agents of plant growth promotion in tomato and inhibition in vitro of Ralstonia solanacearum

    Directory of Open Access Journals (Sweden)

    Patrícia Baston Barretti

    2008-06-01

    Full Text Available A partir de 150 isolados de bactérias endofíticas obtidos de folhas, caules e raízes de tomateiros sadios, 53 destacaram-se quanto à habilidade em promover o crescimento de plantas de tomateiro (Solanum lycopersicum L.. Submetidos a uma nova seleção, os isolados UFV-E17, UFV-E22, UFV-E25, UFV-E26, UFV-E27, Bacillus cereus (UFV-E29, UFV-E49, UFLA 06-LS, UFLA 08-LS e UFLA 11-LS apresentaram maior promoção do crescimento. Avaliações semanais de altura e número de folhas e folíolos das plantas aconteceram durante 45 dias. Após a sexta avaliação, mensurou-se a área foliar e o peso da matéria fresca e seca da parte aérea e da raiz das plantas. O isolado UFV-E49 apresentou melhor resultado para altura, área foliar, número de folhas e peso da matéria fresca e seca, tanto da parte aérea quanto da raiz. Dos isolados selecionados, somente dois apresentaram efeito inibitório direto in vitro a Ralstonia solanacearum.Out of one hundred and fifty isolates of endophytic bacteria from leaves, stems and roots of healthy tomatoes (Solanum lycopersicum L., fifty three showed ability to promote tomato plant growth, among these, ten isolates UFV-E17, UFV-E22, UFV-E25, UFV-E26, UFV-E27, Bacillus cereus (UFV-E29, UFV-E49, UFLA 06-LS, UFLA 08-LS and UFLA 11-LS, provided the largest plant growth promotion. Weekly assessment of plant height and number of leaves and leaflets were carried out during 45 days. After the sixth evaluation, the leaf area and the fresh and dry weight of the aerial part of plants and of the roots were measured. Isolate UFV-E49 provided the largest values of height, leaf area, number of leaves and fresh and dry weight of the aerial part of plants as well as the root. From the selected isolates, only two presented antimicrobial activity against Ralstonia solanacearum.

  14. RESISTÊNCIA DE DUAS ESPÉCIES DE BAMBU TRATADAS CONTRA FUNGOS XILÓFAGOS

    Directory of Open Access Journals (Sweden)

    Rogy Frigeri Tiburtino

    2015-06-01

    Full Text Available RESUMOO objetivo deste trabalho foi avaliar a resistência de bambus das espécies Bambusa vulgaris e Dendrocalamus giganteus após serem expostos a três métodos de tratamentos químicos preservativos, contra a ação dos fungos Postia placenta e Polyporus fumosus. Os métodos de tratamento empregados foram o de transpiração (diafragma íntegro e rompido, imersão prolongada e Boucherie modificado. As hastes de bambu foram transformadas em colmos de 2,0 m de comprimento e tratadas em solução de 1 ou 3% de ingredientes ativos (i.a. de um produto comercial à base de cobre, cromo e boro (CCB. Nos métodos por transpiração e imersão prolongada, os colmos foram expostos nas soluções por períodos de 5, 10 ou 15 dias, enquanto no método de Boucherie modificado não houve segregação do tratamento entre tempos de tratamento. Para avaliar a eficiência dos tratamentos, foram empregados os fungos Postia placenta e Polyporus fumosus. A partir dos resultados, observou-se que, em média, em ambas as espécies de bambu tratadas e métodos empregados, a perda de massa das amostras de bambu, depois de submetidas ao ataque dos fungos, foi baixa, tendo variado de 2,44 a 14,26%.

  15. Los programas de mejora de la ciudad informal, herramientas de lucha contra la pobreza

    Directory of Open Access Journals (Sweden)

    Colavidas, Felipe

    2004-06-01

    Full Text Available The paper contains a discussion of the chief approachesand objectives of new policies for improving precariousLatin American barrios implemented by multilateral,national and/or municipal organizations. With a census of25 million extremely precarious living quarters, theseneighbourhoods have a combined population of 125million. A precise estimate of the investment required toimprove, enlarge and/or refurbish this sub-standardhousing amounts to US$170 billion. In this vein, therelevance and specific contribution of three programmes(“Chile Barrio”, “Favela Barrio” and “Obras con SaldoPedagógico” are critically reviewed from the standpointof their utility as tools for combating poverty.Se presentan los principales enfoques y objetivos de lasnuevas políticas de mejora de barrios precarios enLatinoamérica emprendidas por organismos multilaterales,nacionales y/o municipales. Barrios, en los que secontabilizan más de 25 millones de soluciones habitacionalesextremadamente precarias, en las que se alojan unos 125millones de habitantes. Se ha estimado de forma precisa, quela inversión necesaria para el mejoramiento, ampliacióny/o dotación de estas infraviviendas supondría unos 170.000millones de $USA. Igualmente, se presenta una síntesiscrítica de tres programas (Chile Barrio, Favela Barrio yObras con Saldo Pedagógico, desde la óptica de supertinencia y aportes concretos como herramientas para lalucha contra la pobreza.

  16. Numerical simulation of turbulent flow between shrouded contra-rotating disks

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    Shu-Xian Chen

    2016-06-01

    Full Text Available The turbulent flow between shrouded contra-rotating disks was numerically studied with a two-layer turbulence model and a modified Launder–Sharma low-Reynolds number k-ε model. The dissipation rate decrease caused by solid body rotation was considered in the second model. The comparisons of the effectiveness between these two turbulence models for capturing the critical radius of flow structure transition and reproducing the flow velocity measurements data were presented. For the flow between shrouded disks rotating at the same speed but in opposite senses, that is, the angular velocity ratio of the two disks equals to −1, the Stewartson-type flow structure is found in the cavity. For the flow with one disk rotating more slowly than the other, Stewartson-type flow coexists with Batchelor-type flow, that is, Batchelor-type flow occurs radially outward of the stagnation point where two opposing boundary layer flows meet, and Stewartson-type flow occurs radially inward. The stagnation points near the slower disk move radially outward as the angular velocity ratio decreases toward −1. Theory of rotating fluids with the presence of centrifugal and Coriolis forces stemming from the disk rotation is employed to manifest the flow structure transition mechanisms as the rotation ratio of the disks is varied. The source of the earlier transition to turbulent flow in counter-rotating disk cavity compared with rotor-stator disk cavity is also explained through the research of instability of the flowing free shear layer formed by the counter secondary circulations. With the aid of the numerical results obtained from the two turbulence models, it is found that a more turbulent flow in the core can destroy the Batchelor-type flow and creates a larger Stewartson-type flow region.

  17. Potential reproduction of invasive Asian carps (Hypophthalmichthys spp. in Lake Balaton: pro and contra evidences

    Directory of Open Access Journals (Sweden)

    Attila Mozsár

    2015-10-01

    Full Text Available Asian carps (bighead carp Hypophthalmichthys nobilis × silver carp H. molitrix had been introduced into Lake Balaton (Hungary from 1972 to increase fishery yields and as a biological control of algal blooms. Although the stocking was stopped by 1983, the biomass of Asian carps is still high in the lake, constituting about one-third of the total fish biomass. Our analyses revealed that the present Asian carp stock cannot have originated directly from the last official stockings. The origin of the present stock is undefined, and there are two potential explanations for the source of recruitment. First, it is possible that Asian carps escape from the nearby fishery ponds and get into Lake Balaton periodically. The second explanation is that Asian carps spawn in the lake. However, preceding studies suggested that Asian carps are not able to reproduce in lacustrine environments. In this study, our aim was to contrast the pro and contra evidences of natural Asian carp reproduction in Lake Balaton. We studied the reproductive parameters and genetic pools of 58 Asian carps, sampled between March−November 2011 and 2013. Mature vitellogenic oocytes and post-ovulatory follicles were found in the posterior segments of gonads. This suggests that a fraction of mature eggs was released from the ovaries during the year, but does not necessary imply successful reproduction. Considerable seasonal variations in gonado-somatic indexes (GSI were observed, fluctuating between 6−28% in 2011 and 12−29% in 2013. However, the within-year dynamics of GSI changes suggest that fish do not release significant amounts of milt during the potential spawning period. Rather, the resorption of nutrients allocated to eggs seems probable during autumn. Genetic analyses showed remarkable deviation from Hardy-Weinberg equilibrium within the stock, which indicates that Asian carps do not constitute a closed, self-sustaining population in Lake Balaton.

  18. EXPRESIÓN DE DOS GENES CANDIDATOS A RESISTENCIA CONTRA LA BACTERIOSIS VASCULAR EN YUCA

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    LOPEZ CAMILO

    2008-08-01

    Full Text Available

    La yuca (Manihot esculenta Crantz, Euphorbiaceae es el cuarto cultivo en importancia a nivel mundial como fuente de calorías para la población humana y cuya producción se ve afectada por la bacteriosis vascular, enfermedad ocasionada por Xanthomonas axonopodis pv. manihotis (Xam. La resistencia a enfermedades en plantas depende de la presencia de genes de resistencia (R, los cuales reconocen a los patógenos y simultáneamente permiten desencadenar la respuesta de defensa. A pesar de recientes esfuerzos encaminados a la identificación de genes R en yuca, aún no se ha logrado clonar el primer gen R en este cultivo. En el presente trabajo se estudió el perfil de expresión de dos Genes Candidatos a Resistencia (RGCs asociados a QTLs de defensa contra la bacteriosis vascular en yuca. A partir de la técnica transcripción reversa y reacción en cadena de la polimerasa (RT-PCR se evaluó la expresión de los genes RXam1 y RXam2 en tallos y hojas de las variedades resistentes SG107-35 y MBRA685 de yuca, después de ser inoculadas con la cepa CIO151 de Xam. Se observó que RXam1 es inducido a partir de los cinco días post-inoculación tanto en tallos como hojas de las dos variedades, mientras que RXam2 es expresado de manera constitutiva en la variedad MBRA685.

  19. Influence of manufacturing procedure on stability of Unguentum contra perniones preparations

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    Bošković Mirjana

    2005-01-01

    Full Text Available Background. Application of various technological procedures for the manufacture of officinal preparation ointment against chilblains (Unguentum contra perniones produce essential variations in the quality and stability of the final product. Changing the sequence of admixing active substances into the ointment base indicated the presence of incompatibility between the active substances, as well as between the active substances and the ointment base components. The aim was to examine the influence of various technological manufacturing procedures on quality and stability of the preparation. Methods. Changes in the samples of ointments and aqueous solutions of active substances were analyzed microscopically. Results. Microscopic analysis of hydrosoluble active substance solutions demonstrated destruction of ichthammol, induced by an acidic medium due to the dissolution of tannin and resorcinol, which is well known from the literature. It also demonstrated the destruction of tannin and resorcinol in aqueous solution, which had not been described in the literature. Application of the prescribed procedure for the manufacturing of ointment against chilblains, conceals the incompatibility reactions due to a slow dissolution of the tannin suspended in the officinal ointment base Unguentum cera lanae. Admixture of an ready-made aqueous solution of tannin caused an instant contact between ichthammol and the acidic medium, which caused the destruction or the complete absence of the formation of emulsion droplets. The problem of incompatibility reactions between lanolin alcohols in the ointment base and ichthammol and resorcinol, as well as the reaction between Peruvian balsam and sulfur from the ichthammol sulfate ion was observed. Numerous incompatibility reactions of ointment against chilblains, components indicated that it was necessary to introduce alterations in both the qualitative and quantitative composition of the preparation. Conclusion. Excipient

  20. A POLÍTICA DE CONTRA-REFORMA AGRÁRIA DO BANCO MUNDIAL NO CEARÁ

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    Alexandra Maria de Oliveira

    2006-12-01

    Full Text Available renda capitalizada da terra por proprietários de terras rentistas. Os assentamentos enquanto Este artigo analisa a política de crédito fundiário no Ceará praticada pelos governos estadual e federal, em parceria com o Banco Mundial, a partir de 1996. A forma pela qual o Estado foi levado a dar início e desenvolver a “reforma agrária de mercado” no Ceará, recoloca problemas importantes, tais como: a questão da reforma agrária e o acesso à terra pelos sem terra, e o problema da estrutura fundiária no Ceará e no Nordeste. A reflexão sobre a contra-reforma agrária do Banco Mundial passa pela discussão acerca da concepção do desenvolvimento territorial contraditório (desigual e combinado no interior da Geografia Agrária. A pesquisa foi desenvolvida a partir de estudo realizado em oito assentamentos criados em decorrência dos projetos São José e Cédula da Terra. A implementação da “reforma agrária de mercado” no Ceará traz consigo o re-significado da apropriação da frações do território conquistado, constituíram, por sua vez, em uma forma de propriedade diferente da propriedade privada capitalista.

  1. The meaning of the rubella vaccine for pregnant women El significado de la vacuna contra la rubeola para las mujeres gestantes O significado da vacina contra rubéola para as mulheres grávidas

    Directory of Open Access Journals (Sweden)

    Lúcia Maria Tonzar Ristori Ozaki

    2007-08-01

    Full Text Available The research was aimed at describing the meaning of the rubella vaccine to women who were discovered pregnant after having received the measles-rubella vaccine during the 2001 campaign against rubella, and who lived in 10 cities within the region of DIR XX from São João da Boa Vista. The theory of Social Representation was used as a reference framework for the research, and data were collected through the Collective Subject Discourse technique, involving 18 women who either were pregnant or became pregnant within 30 days after having received the vaccine. Through their discourse, it was possible to unveil the diversity of meanings the rubella vaccine has when dispensed during pregnancy, characterized as a threat to their and their children's physical integrity and to their conjugal relationship. The meanings constitute an important source of information that allows health professionals and administrators to reflect, so they can reconsider their role as health promoters.Se trató de describir el significado de la vacuna contra la rubeola para las mujeres que se enteraron del embarazo después de recibir la vacuna dupla viral, debido a la campaña contra la rubeola-2001, en la DIR XX de São João da Boa Vista. Fue adoptada como referencia la Teoría de la Representaciones Sociales. La colección de datos fue realizada a través de la técnica de Discurso del Sujeto Colectivo con 18 gestantes y mujeres embarazadas hasta 30 días después de la aplicación de la vacuna, consideradas suceptibles a la rubeola, habitantes de 10 municipios de la región. Considerando los discursos de las mujeres, fue posible detectar los diferentes resultados de la vacuna contra la rubeola cuando es aplicada durante la gestación, representada como amenaza a su integridad, a la de su hijo y a su relación conyugal. Esos significados se constituyen en importante fuente de información que brinda a los profesionales de la salud y gestores una reflexión sobre desempe

  2. Vacina acelular contra pertússis para adolescentes Acellular pertussis vaccine for adolescents

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    Aroldo P. de Carvalho

    2006-07-01

    Full Text Available OBJETIVOS: A utilização da vacina de células inteiras contra coqueluche levou a uma redução significativa na incidência da enfermidade na criança. Essa mudança no perfil epidemiológico resultou em aumento no número de casos em adolescentes e adultos, conseqüente à perda da imunidade conferida pela doença ou por vacina após cerca de 10 anos, e em lactentes não imunizados ou incompletamente imunizados. O licenciamento da vacina tríplice bacteriana contra difteria, tétano e coqueluche acelular, com formulação específica para maiores de 10 anos de idade (dTpa, apontou para a possibilidade do controle da coqueluche na população das faixas etárias mais acometidas nos últimos anos. FONTE DE DADOS: As informações foram coletadas na base de dados MEDLINE. A pesquisa foi limitada ao período compreendido entre janeiro de 1995 a janeiro de 2006. SÍNTESE DOS DADOS: Estão licenciadas em alguns países duas vacinas dTpa para a faixa etária maior de 10 anos de idade, uma delas contendo cinco componentes imunogênicos da Bordetella pertussis: toxina pertússis, hemaglutinina filamentosa, fimbrias 2 e 3 e pertactina, e a outra contendo três componentes: pertactina, hemaglutinina filamentosa e toxina pertússis inativada, sendo esta a única apresentação licenciada até o momento no Brasil. Embora a composição das duas vacinas seja diferente, os estudos mostram que a imunogenicidade e a eficácia são semelhantes. Entretanto, alguns autores enfatizam que existem dificuldades para a realização de uma avaliação mais precisa da resposta imunológica à vacina e sua duração. Vários países já recomendam de rotina o uso da vacina dTpa para adolescentes. O Canadá ampliou a população alvo até 54 anos de idade. A orientação é de que esse grupo receba uma dose da vacina como reforço do esquema básico de imunização. Isso é fundamentado em resultados de estudos que mostram que a duração da imunidade induzida pela

  3. Tratamiento contra la rabia humana: un poco de su historia Tratamento contra a raiva humana: um pouco de sua histária A historical review of the treatment of human rabies

    OpenAIRE

    Maria Cristina Schneider; Carlos Santos-Burgoa

    1994-01-01

    El presente trabajo es una revisión histórica del tratamiento utilizado contra la rabia humana, desde la antigüedad hasta el momento actual. Pretende hacer una analogía entre el concepto de causa predominante en la época y el tipo de tratamiento utilizado. Los griegos antiguos tenían la diosa Artemisa como sanadora de la rabia y ya utilizaban la cauterización de la herida. Los pueblos del siglo I conocían la capacidad infecciosa en la saliva de perros rabiosos, llamando a ese material de vene...

  4. Encefalitis por anticuerpos contra el receptor de NMDA: experiencia con seis pacientes pediátricos. Potencial eficacia del metotrexato

    Science.gov (United States)

    Bravo-Oro, Antonio; Abud-Mendoza, Carlos; Quezada-Corona, Arturo; Dalmau, Josep; Campos-Guevara, Verónica

    2016-01-01

    Introducción La encefalitis por anticuerpos contra el receptor de N-metil-D-aspartato (NMDA) es una entidad cada vez más diagnosticada en edad pediátrica. A diferencia de los adultos, en muchos casos no se asocia a tumores y las manifestaciones iniciales en niños más frecuentes son crisis convulsivas y trastornos del movimiento, mientras que en los adultos predominan las alteraciones psiquiátricas. Casos clínicos Presentamos seis casos pediátricos confirmados con anticuerpos contra la subunidad NR1 del receptor de NMDA en suero y líquido cefalorraquídeo. Cinco de los casos comenzaron con crisis convulsivas como manifestación clínica inicial antes de desarrollar el cuadro clásico de esta entidad. En todos los casos se utilizaron esteroides como primera línea de tratamiento, con los que sólo se observó control de las manifestaciones en uno, por lo que el resto de los pacientes requirió inmunomoduladores de segunda línea. Todos los pacientes recibieron metotrexato como tratamiento inmunomodulador para evitar recaídas y la evolución fue a la mejoría en todos ellos. Conclusiones En nuestra serie de pacientes con encefalitis por anticuerpos contra el receptor de NMDA, ninguno se asoció a tumores. Todos los casos recibieron metotrexato por lo menos durante un año, no observamos eventos adversos clínicos ni por laboratorio, ni hubo secuelas neurológicas ni recaídas durante el tratamiento. Aunque es una serie pequeña y es deseable incrementar el número y tiempo de evolución, consideramos el metotrexato una excelente alternativa como tratamiento inmunomodulador para esta patología. PMID:24150952

  5. Un Plan de Lucha contra el Fraude como Herramienta para Elevar la Fiscalidad. Alentadora Experiencia en el Caso de Chile.

    OpenAIRE

    Patricio Barra

    2005-01-01

    Este trabajo aborda el problema de la insuficiencia recaudatoria presente en América Latina y evalúa una alternativa para hacer frente a dicha insuficiencia: el combate del fraude fiscal. Se analizan los fundamentos teóricos y empíricos para incluir un Plan de Lucha Contra el Fraude (PLCF) como una herramienta más dentro de las figuras tradicionales para elevar la fiscalidad. El trabajo ofrece una metodología para guiar el diseño de un plan con estas características y la estrategia necesaria ...

  6. El derecho humano a la atención primaria de salud en la lucha contra las enfermedades infecciosas

    OpenAIRE

    Allard Soto, Raúl

    2012-01-01

    La tesis doctoral tiene por objetivo central establecer la configuración básica del derecho humano a la atención primaria de salud en la lucha contra las enfermedades infecciosas, al que tiene derecho toda persona, para lo cual, durante el desarrollo de la tesis, se establecerán los elementos esenciales indisponibles que todo Estado se encuentra llamado a asegurar a su población, con el apoyo de la comunidad internacional y la cooperación económica y técnica de los demás Estados. La defini...

  7. Haz que tu bebé nazca protegido contra la tosferina (Born with Protection against Whooping Cough)

    Centers for Disease Control (CDC) Podcasts

    2015-04-13

    Este podcast provee información acerca de la tosferina, una enfermedad que puede ser mortal para los bebés, y la recomendación de los CDC de que todas las mujeres reciban la vacuna Tdap durante el tercer trimestre de cada embarazo para que su bebé nazca con protección contra esta grave enfermedad.  Created: 4/13/2015 by National Center for Immunization and Respiratory Diseases (NCIRD), Division of Bacterial Diseases (DBD), Meningitis and Vaccine Preventable Diseases Branch (MVPDB).   Date Released: 4/13/2015.

  8. El delito de tortura y su relación con otros atentados contra la integridad moral

    OpenAIRE

    Fernández Torres, María José

    2013-01-01

    1. OBJETIVOS La elección de la tortura como tema de investigación tiene por objetivo probar que, en la lucha contra el terrorismo internacional, se ha devuelto a la actualidad esta institución, abriendo de nuevo el debate jurídico y político sobre su utilidad en el proceso penal del siglo XXI, ahora, desde postulados funcionalistas como los defendidos por JAKOBS en la teoría del “Derecho penal del enemigo”. 2. MÉTODO Se ha utilizado un método dogmático en el estudio del Derecho po...

  9. Violência contra mulheres rurais: gênero e ações de saúde

    OpenAIRE

    Marta Cocco da Costa; Marta Julia Marques Lopes; Joannie dos Santos Fachinelli Soares

    2015-01-01

    Objetivo: Analisar, a partir da categoria analítica de gênero, as dimensões que a violência contra mulheres rurais assume nas concepções de gestores, profissionais e trabalhadores da saúde de municípios da metade sul do Rio Grande do Sul. Métodos: Estudo qualitativo, realizado com 56 participantes, constituídos de gestores municipais, profissionais e trabalhadores da saúde que atuam em áreas rurais. A geração de dados ocorreu por entrevista semiestruturada. Foi utilizada análise de conteúdo t...

  10. Perfil de homens autores de violência contra mulheres detidos em flagrante: contribuições para o enfrentamento

    OpenAIRE

    Alexandra Bittencourt Madureira; Maria Lúcia Raimondo; Maria Isabel Raimondo Ferraz; Gabriele de Vargas Marcovicz; Liliana Maria Labronici; Maria de Fátima Mantovani

    2014-01-01

    Objetivo: Delinear o perfil de agressores detidos em flagrante delito e da violência que perpetraram contra mulheres no período de implantação e consolidação da lei Maria da Penha, em um município da região central do estado do Paraná. Métodos: Pesquisa retrospectiva documental, realizada mediante apreciação de 130 Autos de Prisão, analisados pela estatística descritiva. Resultados: Eram adultos jovens, casados, com baixa escolaridade e trabalho remunerado. 89,3% foram libertados sob...

  11. Sobriedade e embriaguez: a luta dos soldados de Cristo contra as festas dos tupinambás

    Directory of Open Access Journals (Sweden)

    João Azevedo Fernandes

    2007-01-01

    Full Text Available O artigo analisa a luta dos missionários cristãos, em especial os jesuítas, contra as festas e as bebidas alcoólicas dos tupinambás. Eles perceberam que, nestas festas, a cultura tupinambá, principal obstáculo à evangelização, se renovava e se reafirmava constantemente. O artigo também explora as principais estratégias usadas pelos europeus para alcançar o objetivo de extinguir as festas dos índios.

  12. Terapia génica con citocinas contra cáncer cervicouterino Gene therapy with cytokines against cervical cancer

    OpenAIRE

    Víctor Hugo Bermúdez-Morales; Oscar Peralta-Zaragoza; Vicente Madrid-Marina

    2005-01-01

    La terapia génica es una excelente alternativa para el tratamiento de muchas enfermedades. La capacidad para manipular el DNA ha permitido dirigir la terapia génica para corregir la función de un gen alterado, aumentar la expresión de un gen o activar la respuesta inmune. Así, se puede proponer el uso del DNA como un medicamento capaz de controlar, corregir o curar una enfermedad. La terapia génica contra cáncer tiene un potencial enorme, y en la última década se han obtenido resultados muy a...

  13. Anticuerpos monoclonales contra la Gonadotropina Corionica Humana (HCG) y su empleo en el diagnóstico precoz del embarazo.

    OpenAIRE

    Torres E.; N. Pentón; Blanco, R. (Raimundo); N. Abad; A. Triguero; L. Sorell; J. Gavilondo

    2006-01-01

    Se describe la obtención y caracterización de anticuerpos monoclonales contra la hormona gonadotropina cariónica humana (HCG), seleccionados de la inmunización subcutánea en ratones BALB/c. Se reporta también el desarrollo del sistema rápido HeberFast Line® Embarazo, para la detección de la hormona en muestras de orina, basado en los anticuerpos obtenidos y la tecnología del flujo lateral desarrollada en membranas de nitrocelulosa como soporte sólido. El nivel de sensibilidad alcanzado con es...

  14. Prevalencia de anticuerpos contra Brucella sp. En donantes del banco de sangre de un hospital de Lima

    OpenAIRE

    Abel Ortega; José Paredes; Alfredo Guillén

    2007-01-01

    El Perú es un país endémico de Brucelosis, por lo que existe el riesgo de transmisión a través de sangre donada por no ser parte del tamizaje regular que realizan los bancos de sangre. Para conocer la prevalencia de anticuerpos contra Brucella en donantes del banco de sangre del Hospital Edgardo Rebagliati Martins, se analizó 1003 muestras de suero. La prueba tamiz fue Rosa de Bengala (RB); las muestras positivas fueron evaluadas por las pruebas de aglutinación en tubo (AT) y 2-Mercaptoetanol...

  15. Prevalencia de anticuerpos contra Trypanosoma cruzi en donadores de sangre del IMSS, Orizaba, Veracruz, México

    OpenAIRE

    Ramos-Ligonio Angel; Ramírez-Sánchez Michaía Elián; González-Hernández Juan Carlos; Rosales-Encina José Luis; López-Monteon Aracely

    2006-01-01

    OBJETIVO: Determinar la prevalencia de anticuerpos contra Trypanosoma cruzi en donadores del Hospital General Regional del Instituto Mexicano del Seguro Social (IMSS) en la ciudad de Orizaba, Veracruz. MATERIAL Y MÉTODOS: Se examinaron muestras de donadores del banco de sangre del Hospital General Regional (HGRO) del IMSS para la búsqueda de antiT. cruzi por ELISA, Western blot e IFI, utilizando una proteína recombinante (MBP::Hsp70) y un extracto crudo de epimastigotes. Las muestras fueron o...

  16. Contra la familia: ¿cómo hacer justicia a los niños afeminados?

    Directory of Open Access Journals (Sweden)

    Giancarlo Cornejo

    2011-10-01

    Full Text Available Este ensayo explora cómo familia puede ser un nombre que enmascara una violencia asesina contra las/os niñas/os queer. El objetivo es presentar una análisis intertextual de las películas Ma vie en rose y Doubt. Frente a la mirada familiar que nos condena a la reificación de la heteronormatividad, se plantea la importancia de generar miradasamorosas y solidarias que sustenten aquellas vidas donde se manifiestan afectos no hegemónicos.

  17. Contra la familia: ¿cómo hacer justicia a los niños afeminados?

    OpenAIRE

    Giancarlo Cornejo

    2011-01-01

    Este ensayo explora cómo familia puede ser un nombre que enmascara una violencia asesina contra las/os niñas/os queer. El objetivo es presentar una análisis intertextual de las películas Ma vie en rose y Doubt. Frente a la mirada familiar que nos condena a la reificación de la heteronormatividad, se plantea la importancia de generar miradasamorosas y solidarias que sustenten aquellas vidas donde se manifiestan afectos no hegemónicos.

  18. El impacto psicológico de la guerra contra el narcotráfico en periodistas mexicanos

    OpenAIRE

    Flores Morales, Rogelio; Reyes Pérez, Verónica; Reidl Martínez, Lucy María

    2014-01-01

    Periodistas mexicanos (N=140) respondieron cinco instrumentos psicométricos para identificar síntomas de ansiedad, depresión y estrés postraumático, así como sus niveles en el consumo de alcohol y tabaco. El levantamiento de datos se realizó en un contexto nacional de guerra contra el narcotráfico en donde cotidianamente se presentan actos de extrema violencia (asesinatos, matanzas, decapitaciones, etc.). Los resultados indican que los periodistas que cubren noticias de narcotráfico y crimen ...

  19. La lucha de la UE contra el actual crimen organizado: un reto esencial… pero difícil

    OpenAIRE

    Claudia Jiménez

    2015-01-01

    Si la lucha contra la delincuencia organizada requiere en general de un elevado grado de cooperación entre los estados, en el caso de la Unión Europea, con un espacio interior sin fronteras para casi todo, esto resulta insoslayable. Los estados miembros, conscientes de ello, han hecho esfuerzos por avanzar juntos en esta lucha. La creación de nuevas herramientas de cooperación y el uso de organismos autónomos como las agencias han sido pasos importantes, pero están lejos de ser suficientes. P...

  20. Identificación de once candidatos vacunales potenciales contra la malaria por medio de la Bioinformática

    OpenAIRE

    Raúl Isea

    2010-01-01

    En este trabajo se propusieron once candidatos vacunales potenciales contra el Plasmodium falciparum, causante de la muerte de entre 2 y 3 millones de personas cada año. Los candidatos vacunales se seleccionaron mediante una búsqueda de fragmentos del genoma de P. falciparum que presentaban una clara evidencia antigénica y que, a su vez, están expresadas en cuatro estadios del ciclo de vida del parásito: esporozoito, merozoito, trofozoito y gametocito. Los candidatos finales, elegidos in sili...

  1. Evaluación del antagonismo de Trichoderma sp. y Bacillus subtilis contra tres patógenos del ajo

    OpenAIRE

    Karina Astorga-Quirós; Karla Meneses-Montero; Claudia Zúñiga-Vega; Jaime Brenes-Madriz; William Rivera-Méndez

    2014-01-01

    La producción y calidad del cultivo del ajo criollo (Allium sativum) se ven limitadas por diversas enfermedades de origen fungoso y bacterial, que llevan al productor a aplicar estrategias de control químico y en algunos casos abandonar la actividad por un incremento en las pérdidas. El control biológico es una estrategia útil para combatir este tipo de microorganismos. El objetivo de esta investigación consistió en evaluar el antagonismo in vitro de Trichoderma sp. y Bacillus subtilis contra...

  2. 姬松茸60Co辐射诱变菌株J5与原菌株J1蛋白质营养价值比较%Comparative research on protein nutritional value of the 60Co-radiated mutant strain J5 ofAgaricus blazei and its primary strain J1

    Institute of Scientific and Technical Information of China (English)

    刘朋虎; 江枝和; 翁伯琦; 肖淑霞; 雷锦桂; 唐翔虬

    2011-01-01

    The protein nutrition of60 Co-radiated mutant strain J, of Agaricus blazei and its original strain J1 in different growing flushes were studied by non-biological evaluation. The results showed that essential amino acid index, biological value, nutritional index, score of ratio coefficient of amino acid, chemical score and amino acid score of fruit bodies of mutant strain J5 were 1.02%, 2.26%, 2.93%, 11.72%, 9.35% and 5.13% higher than that of strain J, respectively. Four, five, five and six protein indexes respectively in the first, second, third and fourth growing flushes of mutant strains J5 were higher than that of its original strain J1. These results indicated that the protein nutrition of mutant strain J5 was higher than that of strain J1.%采用非生物学评价法对姬松茸60Co辐射诱变菌株J5和其原菌株J1不同潮次菇蛋白质的营养价值进行评价.结果表明:J5子实体的必需氨基酸指数、生物价、营养指数、氨基酸比值系数分、化学评分和氨基酸评分分别比J1高1.02%、2.26%、2.93%、11.72%、9.35%和5.13%;以上6项蛋白质评价指标中,J5第1、第2、第3、第4潮菇分别有4、5、5、6项指标高于J1,表明J5子实体的蛋白质营养价值高于J1.

  3. 水煮和微波处理对巴西蘑菇营养品质及抗氧化能力的影响%Effect of boiling and microwaving treatments on nutritional characteristics and antioxidant activities of mushroom(Agaricus blazei Murril)

    Institute of Scientific and Technical Information of China (English)

    张锐; 孙丽平; 翟庆娇; 常佳驹; 庄永亮

    2012-01-01

    The effects of boiling and microwaving on nutritional compositions and antioxidant activities of fresh and frozen A.blazei Murril(AbM) were evaluated and compared.The results showed that the contents of crude protein,ash,total soluble protein,total soluble sugar,vitamin C,and total phenolics decreased by both cooking treatments,but no significant changes were observed in lipids.Boiling and microwaving significantly changed the compositions of amino acids and decreased the contents of glucose,galactose and mannose,and the effect of boiling was higher than that of microwaving.Furthermore,boiling and microwaving significantly decreased the DPPH· scavenging activity and reducing power of AbM.Analysis of the relations between the antioxidant activities and total phenolic concentrations testified that the cooking treatments not only decreased the total phenolic contents,but also changed the types and relative amounts of phenolic compounds of AbM.%研究了水煮和微波加热处理对新鲜巴西蘑菇营养成分及其抗氧化能力的影响。结果表明,水煮和微波加热处理不同程度上降低了总蛋白质、灰分、可溶性蛋白质、可溶性多糖、总酚和VC的含量,而对脂肪的含量没有显著性变化。另外,加热处理明显改变了巴西蘑菇氨基酸和单糖的组成,微波处理的损失率显著低于水煮处理。加热处理对巴西蘑菇的还原力和清除DPPH·能力的影响显示,水煮和微波处理不仅降低了巴西蘑菇总酚含量,而且改变了其总酚的组成,水煮处理对其抗氧化能力的破坏能力明显高于微波处理。研究可为消费者日常生活合理烹调巴西蘑菇提供科学依据。

  4. 姬松茸多糖对树突状细胞Dectin-1、Syk及CARD9基因表达和T淋巴细胞增殖的影响%Effect of Polysaccharide Isolated from Agaricus Blazei Murill on mRNA Expression Levels of Dectin-1, Syk and CARD9 from Dendritic Cells

    Institute of Scientific and Technical Information of China (English)

    董海影; 高志影; 荣华; 金铭; 王俊平; 牛英才; 刘吉成

    2014-01-01

    目的:探讨低相对分子质量姬松茸多糖(low molecular weight polysaccharide isolated from Agaricus blazei Murill,LMPAB)对树突状细胞C型植物血凝素1(Dectin-1),脾酪氨酸激酶(Sky)和胱天蛋白募集域蛋白9(CARD9)基因表达和T淋巴细胞增殖的影响.方法:体外培养ICR小鼠骨髓来源的树突状细胞;通过流式细胞术检测树突状细胞表面CD11c和CD86分子的表达;采用WST方法检测LMPAB增强树突状细胞对T淋巴细胞的增殖作用;应用实时定量PCR方法检测Dectin-1,Sky和CARD9 mRNA的表达水平.结果:树突状细胞表面CD11c表达98.6%,CD86表达96.97%;与正常组(4.84±0.21)比较,LMPAB +OVA组(6.59±0.19)可增强树突状细胞对T淋巴细胞的增殖作用(P<0.05);与正常组Dectin-1 (6.13±0.27),Sky(0.36 ±0.11)和CARD9(1.85±0.20)比较,LMPAB+OVA组Dectin-1(8.25±0.19),Sky(1.63±0.16)和CARD9(4.40±0.19)明显升高,统计学具有显著意义(P<0.05).结论:所培养的髓系细胞为树突状细胞;LMPAB可通过调控树突状细胞Dectin-1,Sky和CARD9 mRNA的表达增强树突状细胞的免疫效能.

  5. Mago contra falsario: un duelo de insultos entre Calvino y Servet

    Directory of Open Access Journals (Sweden)

    Tausiet, María

    2010-06-01

    Full Text Available The trial of the Spanish theologian and physician Miguel Servet, charged with heresy and blasphemy by the Council of Geneva in 1553, led to a long and abstruse debate between two apparently irreconcilable standpoints. In an attempt to clarify the terms of discussion on such crucial areas as the Trinity, divine immanence and the immortality of the soul, Calvin and Servet embarked on a three-day written debate (15-17 September 1553. In what ultimately became a genuine «duel to the death», what stands out, over and above the actual argumentation, is their use of insults as rhetorical weapons. Given that both adversaries were equally convinced that they were defending the «true faith», most of their attacks were aimed at demonstrating the false nature of their opponent. Thus, according to Servet, Calvin was nothing but an impostor (a latter-day «Simon Magus», while Calvin branded the Spaniard a slanderer and «falsifier».

    El proceso contra el teólogo y médico español Miguel Servet, acusado por el consistorio de Ginebra de hereje y blasfemo en 1553, dio lugar a un largo y abstruso debate teológico entre dos posturas aparentemente irreconciliables. Con la intención de clarificar los términos de la discusión acerca de temas tan cruciales como la Trinidad e inmanencia divinas, o la inmortalidad del alma, Calvino y Servet acordaron mantener una discusión por escrito en latín que duró tres días (15-17 septiembre de 1553. En el contexto de un enfrentamiento que acabó convirtiéndose en un auténtico «duelo a muerte», si algo destaca por encima de cualquier argumentación es la utilización del insulto como arma retórica. Teniendo en cuenta que ambos contendientes estaban convencidos de defender la «verdadera fe», la mayoría de las descalificaciones expresaban la idea de falsedad del contrario. De este modo, según Servet, Calvino no era sino un impostor (un nuevo «Simon Magus», mientras que éste tildó al español de

  6. COP 21: Acuerdo contra el cambio climático en Paris

    Directory of Open Access Journals (Sweden)

    Wilfredo Bulege Gutiérrez

    2015-12-01

    Full Text Available La Cumbre de París cierra un acuerdo histórico contra el cambio climático. Era la señal que muchos esperaban desde que los responsables de la mayoría de países del mundo comenzaron a discutir sobre el cambio climático hace más de dos décadas. Del mismo modo, era la señal que muchos inversores, atrapados ahora entre las dudas, querían oír para saber hacia dónde dirigir su dinero (1. El presidente francés, Fancois Hollande, manifiesta que se trata del “primer acuerdo universal de la historia de las negociaciones climáticas” y de la mejor oportunidad para “cambiar el mundo” (2, y el presidente de Estados Unidos, Barack Obama, considera que es la decisión más ambiciosa de la historia, porque “establece el marco sostenible que el mundo necesita para resolver la crisis climática” (3. Este acuerdo, definido también como convención internacional y que entrará en vigor a partir de 2020, tiene por objeto, conforme con su artículo 2, reforzar la respuesta mundial a la amenaza del cambio climático, en el contexto del desarrollo sostenible y de los esfuerzos por erradicar la pobreza, y para ello plantea: a mantener el aumento de la temperatura media mundial muy por debajo de 2 °C con respecto a los niveles preindustriales, y proseguir los esfuerzos para limitar ese aumento de la temperatura a 1,5 °C con respecto a los niveles preindustriales, reconociendo que ello reduciría considerablemente los riesgos y los efectos del cambio climático; b aumentar la capacidad de adaptación a los efectos adversos del cambio climático y promover la resiliencia al clima y un desarrollo con bajas emisiones de gases de efecto invernadero, de un modo que no comprometa la producción de alimentos; y c elevar las corrientes financieras a un nivel compatible con una trayectoria que conduzca a un desarrollo resiliente al clima y con bajas emisiones de gases de efecto invernadero.

  7. A arte e violência no olhar: Activismo feminista e desconstrução da violência contra as mulheres

    Directory of Open Access Journals (Sweden)

    Maria José Magalhães

    2012-10-01

    Full Text Available Este artigo vem na continuação do texto de Angélica Lima Cruz, retomando‑se a questão da construção de um olhar que integra ou denuncia uma cultura de violência contra as mulheres. Aqui, explora‑se como a crítica feminista da violência contra as mulheres desoculta os mecanismos da sua re/produção, mostrando também que a arte se pode constituir como processo de desconstrução desta violência. Para isso, apresentam‑se e analisam‑se algumas intervenções artísticas e instalações realizadas por feministas, quer no estrangeiro quer em Portugal, no activismo feminista do combate à violência contra as mulheres.

  8. Modification of β-oxidation pathway in Ralstonia eutropha for production of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) from soybean oil.

    Science.gov (United States)

    Insomphun, Chayatip; Mifune, Jun; Orita, Izumi; Numata, Keiji; Nakamura, Satoshi; Fukui, Toshiaki

    2014-02-01

    Ralstonia eutropha H16 is a useful platform for metabolic engineering aiming at efficient production of polyhydroxyalkanaotes being attracted as practical bioplastics. This study focused on bifunctional (S)-specific 2-enoyl-CoA hydratase/(S)-3-hydroxyacyl-CoA dehydrogenase encoded by fadB to obtain information regarding β-oxidation in this bacterium and to achieve compositional regulation of poly((R)-3-hydroxybutyrate-co-(R)-3-hydroxyhexanoate) [P(3HB-co-3HHx)] synthesized from soybean oil. In addition to two FadB homologs (FadB1 and FadB') encoded within the previously identified β-oxidation gene clusters on the chromosome 1, a gene of third homolog (FadB2) was found on chromosome 2 of R. eutropha. The fadB homologs were disrupted in R. eutropha strain NSDG expressing a mutant gene of PHA synthase from Aeromonas caviae. The gene disruptions affected neither growth nor PHA production on fructose. On soybean oil, fadB' deletion led to reduction of PHA quantity attributed to decrease of 3HB unit, while fadB1 deletion slightly increased 3HHx composition without serious negative impact on both cell growth and PHA biosynthesis. Double deletion of fadB1 and fadB' significantly impaired the cell growth and PHA biosynthesis, indicating the major roles of fadB1 and fadB' in β-oxidation. When fadB1 was deleted in several engineered strains of R. eutropha possessing additional (R)-enoyl-CoA hydratase gene(s), the net amounts of 3HHx unit in the PHA fractions showed 6-21% increase probably due to slightly enhanced supply of medium-chain-length 2-enoyl-CoAs through the partially impaired β-oxidation. These results demonstrated that modification of β-oxidation by fadB1 deletion was effective for increasing 3HHx composition in the copolyesters produced from soybean oil. PMID:23999062

  9. A TaqMan-Based Multiplex qPCR Assay and DNA Extraction Method for Phylotype IIB Sequevars 1&2 (Select Agent) Strains of Ralstonia solanacearum.

    Science.gov (United States)

    Stulberg, Michael J; Huang, Qi

    2015-01-01

    Ralstonia solanacearum race 3 biovar 2 strains belonging to phylotype IIB, sequevars 1 and 2 (IIB-1&2) cause brown rot of potato in temperate climates, and are quarantined pathogens in Canada and Europe. Since these strains are not established in the U.S. and because of their potential risk to the potato industry, the U.S. government has listed them as select agents. Cultivated geraniums are also a host and have the potential to spread the pathogen through trade, and its extracts strongly inhibits DNA-based detection methods. We designed four primer and probe sets for an improved qPCR method that targets stable regions of DNA. RsSA1 and RsSA2 recognize IIB-1&2 strains, RsII recognizes the current phylotype II (the newly proposed R. solanacearum species) strains (and a non-plant associated R. mannitolilytica), and Cox1 recognizes eight plant species including major hosts of R. solanacearum such as potato, tomato and cultivated geranium as an internal plant control. We multiplexed the RsSA2 with the RsII and Cox1 sets to provide two layers of detection of a positive IIB-1&2 sample, and to validate plant extracts and qPCR reactions. The TaqMan-based uniplex and multiplex qPCR assays correctly identified 34 IIB-1&2 and 52 phylotype II strains out of 90 R. solanacearum species complex strains. Additionally, the multiplex qPCR assay was validated successfully using 169 artificially inoculated symptomatic and asymptomatic plant samples from multiple plant hosts including geranium. Furthermore, we developed an extraction buffer that allowed for a quick and easy DNA extraction from infected plants including geranium for detection of R. solanacearum by qPCR. Our multiplex qPCR assay, especially when coupled with the quick extraction buffer method, allows for quick, easy and reliable detection and differentiation of the IIB-1&2 strains of R. solanacearum. PMID:26426354

  10. A propionate CoA-transferase of Ralstonia eutropha H16 with broad substrate specificity catalyzing the CoA thioester formation of various carboxylic acids.

    Science.gov (United States)

    Lindenkamp, Nicole; Schürmann, Marc; Steinbüchel, Alexander

    2013-09-01

    In this study, we have investigated a propionate CoA-transferase (Pct) homologue encoded in the genome of Ralstonia eutropha H16. The corresponding gene has been cloned into the vector pET-19b to yield a histidine-tagged enzyme which was expressed in Escherichia coli BL21 (DE3). After purification, high-performance liquid chromatography/mass spectrometry (HPLC/MS) analyses revealed that the enzyme exhibits a broad substrate specificity for carboxylic acids. The formation of the corresponding CoA-thioesters of acetate using propionyl-CoA as CoA donor, and of propionate, butyrate, 3-hydroxybutyrate, 3-hydroxypropionate, crotonate, acrylate, lactate, succinate and 4-hydroxybutyrate using acetyl-CoA as CoA donor could be shown. According to the substrate specificity, the enzyme can be allocated in the family I of CoA-transferases. The apparent molecular masses as determined by gel filtration and detected by SDS polyacrylamide gel electrophoresis were 228 and 64 kDa, respectively, and point to a quaternary structure of the native enzyme (α4). The enzyme exhibited similarities in sequence and structure to the well investigated Pct of Clostridium propionicum. It does not contain the typical conserved (S)ENG motif, but the derived motif sequence EXG with glutamate 342 to be, most likely, the catalytic residue. Due to the homo-oligomeric structure and the sequence differences with the subclasses IA-C of family I CoA-transferases, a fourth subclass of family I is proposed, comprising - amongst others - the Pcts of R. eutropha H16 and C. propionicum. A markerless precise-deletion mutant R. eutropha H16∆pct was generated. The growth and accumulation behaviour of this mutant on gluconate, gluconate plus 3,3'-dithiodipropionic acid (DTDP), acetate and propionate was investigated but resulted in no observable phenotype. Both, the wild type and the mutant showed the same growth and storage behaviour with these carbon sources. It is probable that R. eutropha H16 is upregulating

  11. Screening and Identifying of Antagonistic Actinomycetes against Ralstonia Solancearum%烟草青枯菌拮抗放线菌的筛选及鉴定

    Institute of Scientific and Technical Information of China (English)

    陆铮铮; 彭丽娟; 丁海霞; 左希; 彭杰; 蒋选利

    2013-01-01

    In order to select effective antagonistic actinomycetes against Ralstonia solanacearum, we isolated 56 strains of actinomycetes from healthy tobacco rhizosphere soils. By pairing culture on plate method to screen antagonistic actinomycetes, we attained 3 strains of antagonistic actinomycetes, whose average inhibition diameters were more than 20 mm. We identified 3 strains of actinomycetes according to culture characteristics on differential culture mediums, spore and spore chain morphology, physiological and biochemical, molecular biology methods. The results showed that the 3 strains of actinomycetes were Streptomyces roseofulvus, Streptomyces olivaceoviridis and Streptomyces corchorusii. Among them, the best was S. roseofulvus, and average inhibition diameter was 54.66 mm. Average inhibition diameter of S.olivaceoviridis was 43.20 mm, and average inhibition diameter of S. corchorusii was 20.34 mm.%  为筛选出烟草青枯菌的有效拮抗菌,本研究从烟草根围土壤中分离了97株放线菌,通过平板对峙培养法筛选出抑菌圈直径均达20 mm以上的拮抗放线菌3株。根据其在鉴别培养基上的培养特征、孢子和孢子链的形态特征,生理生化特性以及16SrDNA序列分析对这3株拮抗放线菌进行鉴定。结果表明,3株拮抗放线菌都属于链霉菌属(Streptomyces),分别为粉红孢类群中的玫瑰暗黄链霉菌(S. roseofulvus Preobrazhenskaya)、绿色类群中的橄榄绿链霉菌(S. olivaceoviridis Preobrazhenskaya)和灰褐类群中的黄麻链霉菌(S. corchorusii Ahmed)。其中,玫瑰暗黄链霉菌菌株对青枯劳尔氏菌的拮抗效果最好,其平均抑菌圈直径可达54.66 mm;橄榄绿链霉菌菌株的拮抗效果次之,其平均抑菌圈直径为43.20 mm;黄麻链霉菌平均抑菌圈直径为20.34 mm。

  12. A TaqMan-Based Multiplex qPCR Assay and DNA Extraction Method for Phylotype IIB Sequevars 1&2 (Select Agent Strains of Ralstonia solanacearum.

    Directory of Open Access Journals (Sweden)

    Michael J Stulberg

    Full Text Available Ralstonia solanacearum race 3 biovar 2 strains belonging to phylotype IIB, sequevars 1 and 2 (IIB-1&2 cause brown rot of potato in temperate climates, and are quarantined pathogens in Canada and Europe. Since these strains are not established in the U.S. and because of their potential risk to the potato industry, the U.S. government has listed them as select agents. Cultivated geraniums are also a host and have the potential to spread the pathogen through trade, and its extracts strongly inhibits DNA-based detection methods. We designed four primer and probe sets for an improved qPCR method that targets stable regions of DNA. RsSA1 and RsSA2 recognize IIB-1&2 strains, RsII recognizes the current phylotype II (the newly proposed R. solanacearum species strains (and a non-plant associated R. mannitolilytica, and Cox1 recognizes eight plant species including major hosts of R. solanacearum such as potato, tomato and cultivated geranium as an internal plant control. We multiplexed the RsSA2 with the RsII and Cox1 sets to provide two layers of detection of a positive IIB-1&2 sample, and to validate plant extracts and qPCR reactions. The TaqMan-based uniplex and multiplex qPCR assays correctly identified 34 IIB-1&2 and 52 phylotype II strains out of 90 R. solanacearum species complex strains. Additionally, the multiplex qPCR assay was validated successfully using 169 artificially inoculated symptomatic and asymptomatic plant samples from multiple plant hosts including geranium. Furthermore, we developed an extraction buffer that allowed for a quick and easy DNA extraction from infected plants including geranium for detection of R. solanacearum by qPCR. Our multiplex qPCR assay, especially when coupled with the quick extraction buffer method, allows for quick, easy and reliable detection and differentiation of the IIB-1&2 strains of R. solanacearum.

  13. La lucha de la UE contra el actual crimen organizado: un reto esencial… pero difícil

    Directory of Open Access Journals (Sweden)

    Claudia Jiménez

    2015-12-01

    Full Text Available Si la lucha contra la delincuencia organizada requiere en general de un elevado grado de cooperación entre los estados, en el caso de la Unión Europea, con un espacio interior sin fronteras para casi todo, esto resulta insoslayable. Los estados miembros, conscientes de ello, han hecho esfuerzos por avanzar juntos en esta lucha. La creación de nuevas herramientas de cooperación y el uso de organismos autónomos como las agencias han sido pasos importantes, pero están lejos de ser suficientes. Para progresar en este sentido, es imprescindible superar el recelo derivado de la defensa de una soberanía hoy en día más imaginaria que real y, sobre todo, es necesaria una mayor armonización de estándares de seguridad, protección de derechos fundamentales y garantías del Estado de derecho que permitan un mayor grado de confianza mutua, imprescindible para una acción conjunta más eficaz contra este tipo de delincuencia.

  14. Hacia una comprensión de los “crímenes contra la humanidad” a partir de Nuremberg

    Directory of Open Access Journals (Sweden)

    Rainer Huhle

    2011-12-01

    Full Text Available El artículo presenta un análisis histórico de la forma en la que los crímenes contra la humanidad se convierten en delitos autónomos de los crímenes de guerra y de agresión desde el momento en que este conceptose introduce en las discusiones que tuvieron los Aliados cuando se estaba creando el Tribunal Militar Internacional de Nuremberg. El texto describe la manera como este concepto se ha desarrollado y discutido en diversas instancias internacionales hasta llegar al Estatuto de Roma de la Corte Penal Internacional. En el artículose muestra cómo los Juicios de Nuremberg tienen un significadojurídico e histórico trascendental puesto que logran institucionalizar la responsabilidad individual ante un tribunal internacional para una nueva categoría de crímenes. Igualmente, da cuenta de cómo, luego de los Juicios de Nuremberg, los crímenes contra la humanidad fueron gradualmente retirados del ámbito de la soberanía estatal y pasaron a ser un asunto de la comunidad internacional de naciones.

  15. Subalternidade de gênero: refletindo sobre a vulnerabilidade para violência doméstica contra a mulher

    Directory of Open Access Journals (Sweden)

    Laura Christina Macedo Piosiadlo

    2014-12-01

    Full Text Available Objetivo: Este artigo tem o objetivo de refletir sobre a violência de gênero praticada contra a mulher no espaço intrafamiliar, sobretudo, a relação entre a subalternidade de gênero no âmbito familiar e a vulnerabilidade para este tipo de violência. Resultados: A subalternidade de gênero e a violência contra mulher apresentam-se entrelaçadas na história e, conformam-se por meio da construção de gênero nas sociedades. As mulheres formam um grupo que é violentado, constantemente, e de diversas maneiras, como, agressões e abusos físicos, verbais e sexuais cometidos por parceiros ou ex-parceiros, familiares, amigos, desconhecidos, por instituições públicas ou pelo Estado. Conclusão: Para que os serviços de saúde possam se antecipar às doenças e agravos decorrentes da violência doméstica é essencial compreender os aspectos relacionados à vulnerabilidade da mulher para a violência, como um indicador da iniquidade e da desigualdade social que supera o conceito probabilístico de risco.

  16. Prevalencia de anticuerpos contra Brucella sp. En donantes del banco de sangre de un hospital de Lima

    Directory of Open Access Journals (Sweden)

    Abel Ortega

    2007-10-01

    Full Text Available El Perú es un país endémico de Brucelosis, por lo que existe el riesgo de transmisión a través de sangre donada por no ser parte del tamizaje regular que realizan los bancos de sangre. Para conocer la prevalencia de anticuerpos contra Brucella en donantes del banco de sangre del Hospital Edgardo Rebagliati Martins, se analizó 1003 muestras de suero. La prueba tamiz fue Rosa de Bengala (RB; las muestras positivas fueron evaluadas por las pruebas de aglutinación en tubo (AT y 2-Mercaptoetanol (2-ME. Dos donantes fueron positivos a RB, confirmados por AT y 2-ME, se encontró una prevalencia de 0,20% (IC99%: 0,01-0,92. Se demostró la presencia de donantes portadores de anticuerpos contra Brucella con posible Brucelosis activa, evidenciándose la posibilidad de transmisión de esta infección. Se debe realizar mayores estudios con la finalidad de conocer la realidad de otros bancos de sangre.

  17. La resistencia como forma de hacer política del zapatismo ante la IV guerra mundial contra la humanidad

    Directory of Open Access Journals (Sweden)

    Rafael Sandoval Álvarez

    2003-10-01

    Full Text Available En el contexto de la Cuarta Guerra Mundial contra la humanidad y la extraordinaria articulación de la resistencia y la rebeldía que se teje contra la globalización neoliberal, resulta relevante reconocer las nuevas formas de hacer política que en los últimos diez años han desplegado sujetos tan diversos en todo el planeta y que se identifican como parte del esfuerzo por crear un mundo donde quepan muchos mundos. La resistencia como forma de hacer política tiene en el Zapatismo un referente que desde 1994 ha generado iniciativas políticas y organizativas que hoy trasciende tanto en lo local como en el ámbito internacional. El objetivo de este ensayo es realizar un acercamiento que da cuenta de cómo el Zapatismo ha pensado y construido una forma de hacer política que tiene en la resistencia, la dignidad y la autonomía, la base de lo que ellos llaman el Método Zapatista de hacer política: el caminar preguntando, el mandar obedeciendo, el autogobierno, etc.

  18. Optimization Correction Strength Using Contra Bending Technique without Anterior Release Procedure to Achieve Maximum Correction on Severe Adult Idiopathic Scoliosis

    Science.gov (United States)

    Rahyussalim, Ahmad Jabir; Saleh, Ifran; Purnaning, Dyah; Kurniawati, Tri

    2016-01-01

    Adult scoliosis is defined as a spinal deformity in a skeletally mature patient with a Cobb angle of more than 10 degrees in the coronal plain. Posterior-only approach with rod and screw corrective manipulation to add strength of contra bending manipulation has correction achievement similar to that obtained by conventional combined anterior release and posterior approach. It also avoids the complications related to the thoracic approach. We reported a case of 25-year-old male adult idiopathic scoliosis with double curve. It consists of main thoracic curve of 150 degrees and lumbar curve of 89 degrees. His curve underwent direct contra bending posterior approach using rod and screw corrective manipulation technique to achieve optimal correction. After surgery the main thoracic Cobb angle becomes 83 degrees and lumbar Cobb angle becomes 40 degrees, with 5 days length of stay and less than 800 mL blood loss during surgery. There is no complaint at two months after surgery; he has already come back to normal activity with good functional activity. PMID:27064801

  19. Optimization Correction Strength Using Contra Bending Technique without Anterior Release Procedure to Achieve Maximum Correction on Severe Adult Idiopathic Scoliosis

    Directory of Open Access Journals (Sweden)

    Ahmad Jabir Rahyussalim

    2016-01-01

    Full Text Available Adult scoliosis is defined as a spinal deformity in a skeletally mature patient with a Cobb angle of more than 10 degrees in the coronal plain. Posterior-only approach with rod and screw corrective manipulation to add strength of contra bending manipulation has correction achievement similar to that obtained by conventional combined anterior release and posterior approach. It also avoids the complications related to the thoracic approach. We reported a case of 25-year-old male adult idiopathic scoliosis with double curve. It consists of main thoracic curve of 150 degrees and lumbar curve of 89 degrees. His curve underwent direct contra bending posterior approach using rod and screw corrective manipulation technique to achieve optimal correction. After surgery the main thoracic Cobb angle becomes 83 degrees and lumbar Cobb angle becomes 40 degrees, with 5 days length of stay and less than 800 mL blood loss during surgery. There is no complaint at two months after surgery; he has already come back to normal activity with good functional activity.

  20. Percepciones de las mujeres sobre la violencia contra la mujer: una revisión integradora de la literatura

    Directory of Open Access Journals (Sweden)

    Franciéle Marabotti Costa Leite

    2013-07-01

    Full Text Available Este artículo analiza las evidencias encontradas en la literatura acerca de las percepciones de las mujeres sobre la violencia contra la mujer. Para esta revisión fueron identificados 12 artículos que conforman la muestra del estudio, a partir de las bases de datos BDENF, LILACS, MEDLINE, CINAHL, y PubMed. Se encontraron tres categorías: reconociendo y conviviendo con la violencia; sentimientos atribuidos y percepción de los motivos de la violencia. Los resultados apuntan a la baja percepción de las mujeres al respecto de las situaciones vividas como violentas siendo, muchas veces, complacientes y tolerantes a la violencia cometida por el compañero íntimo, percibiéndola como cultural y religiosa. Se comprende que es necesario ampliar los estudios sobre este tema, en los diferentes estados brasileños, una vez que la violencia contra la mujer constituye un fenómeno que alcanza todo el Brasil y que es percibido de forma multifacética y heterogénea.

  1. A nova estratégia americana para o Afeganistão e a manobra contra-subversiva $econtinuidade ou mudança?

    OpenAIRE

    Branco, Carlos Martins

    2009-01-01

    Este artigo pretende analisar o impacto do designado Plano Obama, anunciado em 27 de Março de 2009, na manobra contra-subversiva adoptada pelas forças internacionais no Afeganistão. Procura-se reflectir sobre o que mudou na forma de fazer a guerra em resultado da implementação daquele Plano. Será que a nova estratégia introduziu alterações no paradigma do combate contra-subversivo resultando numa abordagem mais sofi sticada de fazer a guerra? No domínio conceptual, ...

  2. Un estudio iconográfico de las estampas que ilustran el libro de "La historia sacra del Santísimo Sacramento contra las heregias destos tiempos"

    OpenAIRE

    Calvo Portela, Juan Isaac

    2014-01-01

    En este artículo se hace un estudio iconográfico de las dos estampas que ilustran el libro del dominico fray Alonso de Ribera, La Historia Sacra del Santissimo Sacramento contra las heregias destos tiempos, editado por Luis Sánchez en Madrid en 1626. En dichas estampas se plasman dos aspectos que van a ser fundamentales de la religiosidad contrarreformista española del siglo XVII, la defensa a ultranza de la Eucaristía y la lucha contra la herejía.

  3. La historia sacra del Santísimo Sacramento contra las heregias destos tiempos"An iconographic study of the engravings illustrating the work

    OpenAIRE

    Calvo Portela, Juan Isaac

    2014-01-01

    En este artículo se hace un estudio iconográfico de las dos estampas que ilustran el libro del dominico fray Alonso de Ribera, La Historia Sacra del Santissimo Sacramento contra las heregias destos tiempos, editado por Luis Sánchez en Madrid en 1626. En dichas estampas se plasman dos aspectos que van a ser fundamentales de la religiosidad contrarreformista española del siglo XVII, la defensa a ultranza de la Eucaristía y la lucha contra la herejía. In this article is made an iconographic s...

  4. México: violencia criminal y "guerra contra el narcotráfico" Mexico: criminal violence and "war on drug trafficking"

    OpenAIRE

    Guillermo Pereyra

    2012-01-01

    Este artículo analiza las relaciones de poder que condicionan en México la violencia actual empleada por los grupos ilegales de la droga y la "guerra contra el narcotráfico" declarada por el gobierno de Felipe Calderón. A partir del análisis de la coexistencia de dos modalidades del poder (soberanía y gubernamentalidad), se busca entender la lógica del poder del narcotráfico y de la lucha militarizada que el gobierno lleva a cabo contra las organizaciones de la droga. Se discuten también los ...

  5. Antagonismo social de las luchas socioambientales en México: Cuerpo, emociones y subjetividad como terreno de lucha contra la afectación

    OpenAIRE

    Mina Lorena Navarro Trujillo; Oliver Gabriel Hernández Lara

    2010-01-01

    Ante el despojo de los bienes comunes, materiales e inmateriales, en el contexto de la acumulación por desposesión planteada por David Harvey, está emergiendo un nuevo antagonismo social contra el paradigma extractivo y la mercantilización de la vida. La relación del cuerpo y las emociones emerge como un terreno de lucha contra la afectación ambiental, al mismo tiempo que habilita un tiempo y espacio autónomo para la prefiguración de una sociedad porvenir.

  6. Vacinação contra influenza e pneumococo na insuficiência cardíaca: uma recomendação pouco aplicada Vacunación contra influenza y neumococo en la insuficiencia cardíaca: una recomendación poco aplicada Influenza and pneumococcal vaccination in heart failure: a little applied recommendation

    Directory of Open Access Journals (Sweden)

    Wolney de Andrade Martins

    2011-03-01

    Full Text Available FUNDAMENTO: A insuficiência cardíaca (IC cursa com frequentes descompensações e admissões ao serviço de emergência. Vacinação contra Influenza (INF e Pneumococo (PNM são recomendadas nas diretrizes, entretanto, as infecções respiratórias são a terceira causa de hospitalização na IC. OBJETIVO: Avaliar a frequência da vacinação contra INF e PNM em pacientes com IC na rede pública. MÉTODOS: Em estudo observacional realizado em Teresópolis, região serrana fluminense, foram utilizadas três estratégias: (I estudo das requisições para vacina contra INF e/ou PNM na Secretaria Municipal de Saúde, entre 2004 e 2006; (II inquérito direto a 61 pacientes com IC atendidos na atenção básica sobre sua situação vacinal contra INF e PNM; (III inquérito direto sobre situação vacinal contra INF e PNM a 81 pacientes com IC crônica descompensada atendidos na única emergência aberta à rede pública. RESULTADOS: Na estratégia I, a vacinação contra INF e/ou PNM foi de 15,3% daqueles com indicações por doenças cardiovasculares e respiratórias. A mediana do tempo entre a indicação e a vacinação foi de 32 dias. Na estratégia II, o percentual de vacinados contra INF, com idade > 60 anos, foi de 23,1%, e de 24,6% contra PMN em todas as idades. Na estratégia III, o percentual de pacientes vacinados contra INF foi de 35,8% e contra PNM foi de 2,5%. CONCLUSÃO: A taxa de vacinação contra INF e PNM em pacientes com IC é muito baixa e ainda menor naqueles descompensados atendidos em serviço de emergência.FUNDAMENTO: La insuficiencia cardíaca (IC cursa con frecuentes descompensaciones y admisiones al servicio de emergencia. Vacunación contra Influenza (INF y Neumococo (PNM son recomendadas en las directrices, entre tanto, las infecciones respiratorias son la tercera causa de hospitalización en la IC. OBJETIVO: Evaluar la frecuencia de la vacunación contra INF y PNM en pacientes con IC en la red pública. MÉTODOS: En

  7. Prevalencia de anticuerpos contra Leptospira en personas asintomáticos y en perros de Chancay, Lima 2001

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    Manuel Céspedes

    2007-10-01

    Full Text Available Objetivos. Determinar la prevalencia de anticuerpos contra Leptospiras en personas asintomáticas dedicadas a la agricultura, pesca y comercio y en perros domésticos de localidades de Chancay (Huaral, Lima. Material y métodos. Estudio transversal analítico, se tomó muestras de suero de 268 pobladores de tres localidades, en quienes se evaluó la presencia de anticuerpos totales contra Leptospiras por el método de ELISA IgG y la prueba de microaglutinación (MAT. Se buscaron los factores asociados con la positividad a Leptospiras calculando el OR con su intervalo de confianza al 95%. De la misma manera, se tomó muestras de suero de 241 perros a los que se realizó la prueba de MAT. Resultados. La prevalencia de anticuerpos contra Leptospira en población asintomática fue de 10,1% (IC95%: 6,3-13,9, la cual estuvo asociada con el abastecimiento de agua para consumo en quebrada o pozo (OR: 3,48, IC95%: 1,39-8,74, con el antecedente de nadar en el río o acequia (OR: 4,75, IC95%: 1,51-14,92 y con tener una edad entre 21-40 años (OR: 2,47, IC95%: 1,10-5,52. Los serovares más frecuentes fueron Icterohaemorrhagiae y Canicola según MAT. En canes, 27,8% (67/241 tuvieron serología positiva a leptospiras. Conclusiones. Existe una mediana prevalencia de serología positiva para Leptospiras en la población general asintomática y condiciones favorables para la presencia de Leptospiras en las localidades estudiadas. En estas zonas se recomienda realizar actividades educativas preventivas frecuentes, tomando en cuenta los resultados de este estudio y el personal de salud debe sospechar de la leptospirosis como una causa de enfermedad febril.

  8. Violência contra idosos: uma questão nova? Violence against aged people: a new issue?

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    Ana Paula R. Amadio Sanches

    2008-09-01

    Full Text Available O envelhecimento da população mundial é um fato concreto e de conhecimento público. O Brasil inicia seu processo de transição demográfica seguindo o padrão mundial: o aumento do número de idosos com possibilidade de atingir elevadas faixas etárias, o que traz a necessidade de pesquisas nesse campo, devido à demanda apresentada por essa nova parcela da população. A questão da violência doméstica contra idosos tem se ampliado e sugere necessidade de maior campo de investigação nessa área, dado o risco suposto ao qual essa população mais idosa está submetida. O objetivo deste artigo é verificar os estudos relacionados ao tema já realizados no Brasil e em diferentes países, com enfoque epidemiológico. O trabalho apresenta diversos pontos de abordagem da violência contra idosos, considerando questões relacionadas à cultura do envelhecimento, ações de políticas públicas, atuação de equipes de saúde, definição do termo abordado, aspectos legais e éticos da violência contra o idoso. Tal estudo permite ao pesquisador analisar os diferentes aspectos que envolvem a temática, demonstrando a necessidade de pesquisas específicas direcionadas ao tema.The world population is getting older and this is a very well known fact. The demographic transition of the Brazilian population is just beginning, and follows the world pattern: an increase in the number of older persons with an actual chance of reaching higher ages. As a consequence, there is the need of new studies to supply data about this new aspect of the population demands. Household violence against old persons has been growing and this strongly recommends that special research studies should be conducted, in view of the risk to which these individuals are exposed. The objective of this study is to list and analyze Brazilian and international studies related to aged persons, in light of an epidemiological point of view. The article presents many ways of approaching

  9. La violencia contra mujeres en comunidades transnacionales de San Luis Potosí, México: un problema de salud pública

    Directory of Open Access Journals (Sweden)

    Yesica Yolanda Rangel Flores

    2016-01-01

    Full Text Available Resumen: La violencia contra las mujeres es un problema mundial, dado el impacto que tiene en la calidad de vida de quienes la viven, bajo la complicidad de una cultura patriarcal y un Estado que la invisibiliza. Este artículo busca hacer visibles los contextos de violencia en que viven mujeres "parejas de migrantes" en las localidades de origen, problematizando cómo atentan contra su salud física y mental. Se trató de un estudio cualitativo con enfoque en la antropología interpretativa, con 21 mujeres de localidades rurales y urbanas de San Luis Potosí, México; se aplicaron entrevistas desde el marco de historia de la vida cotidiana y análisis de discurso. Los resultados muestran que las mujeres viven mayor violencia cuando sus parejas migran, nuevas formas de violencia se cometen contra ellas, y los ámbitos en que la sufren incluyen el doméstico y el comunitario. La violencia contra las mujeres constituye un problema de salud pública que debe atenderse desde un marco sensible a las dinámicas sociales y culturales que caracterizan los contextos en que se aplican los programas de salud.

  10. ESTADOS UNIDOS DE AMÉRICA. Negación de la dignidad humana: Tortura y rendición de cuentas en la guerra contra el terrorismo

    Directory of Open Access Journals (Sweden)

    AMNISTÍA INTERNACIONAL

    2005-03-01

    Full Text Available Resumen del Informe de Amnistía Internacional de Octubre de 2004: "ESTADOS UNIDOS DE AMÉRICA. Negación de la dignidad humana: Tortura y rendición de cuentas en la guerra contra el terrorismo".

  11. Uso de anticuerpos contra proteínas extracelulares de bacterias de la microbiota intestinal como biomarcadores de Enfermedad Inflamatoria Intestinal

    OpenAIRE

    Hevia González, Arancha

    2012-01-01

    En este trabajo se pretende utilizar los niveles de anticuerpos dirigidos contra bacterias ingeridas con los alimentos, representantes de la microbiota intestinal, como posibles biomarcadores para uso en la Enfermedad Inflamatoria Intestinal con el fin de facilitar el desarrollo de mejores métodos de diagnóstico precoz.

  12. Evaluación de anticuerpos contra enfermedades prevenibles por vacunas en el binomio madre–recién nacido en hospitales de Ciudad de La Habana

    Directory of Open Access Journals (Sweden)

    Rolando Felipe Ochoa

    2007-08-01

    Full Text Available El sistema inmune es inmaduro en los recién nacidos, lo que los hace susceptibles a las enfermedades infecciosas, sin embargo, pueden ser parcialmente protegidos por los anticuerpos adquiridos a través de la placenta. Por ello, nos propusimos evaluar la transferencia transplacentaria de anticuerpos contra algunas enfermedades prevenibles por vacunas. Se realizó un ensayo prospectivo, aleatorio, en el binomio madre–recién nacido. Para ello se analizó un total de 96 pares de muestras de suero, tomadas en el salón de preparto y al nacimiento en hospitales de Ciudad de La Habana, durante el año 2004. Se emplearon técnicas inmunoenzimáticas para determinar los niveles de antitoxina tetánica (ATT, antitoxina diftérica (ATD y anticuerpos contra proteínas de membrana externa del meningococo B (PME, contra el polisacárido capsular del meningococo C (PSC y contra el polisacárido Vi de Salmonella Typhi. Se detectó un nivel apropiado de ATT, tanto en las madres como en los recién nacidos, predominando los valores correspondientes a la protección de larga duración (>1 UI/mL, con 88,54% y 92,71%, respectivamente. Se observó niveles de ATD inferiores a 0,1 UI/mL, límite para una protección confiable, en el 54,17% y 45,83% de las madres y los recién nacidos. El 90,63% de las madres y el 96,88% de los recién nacidos presentaron concentraciones de anticuerpos contra PME superiores a 2 µg/mL, así como el 38,54% y el 41,67% para anticuerpos contra PSC. La seroprotección contra la Salmonella Typhi (>1 µg/mL fue de 5,21% y 8,33%, respectivamente. La mayoría de los recién nacidos presentaron títulos superiores de anticuerpos al de sus madres, lo cual demuestra que la transferencia transplacentaria de anticuerpos es un mecanismo eficiente.

  13. LAS UNIONES MARITALES DE HECHO ENTRE PAREJAS DEL MISMO SEXO, UNA LUCHA INCONCLUSA CONTRA LA DISCRIMINACIÓN

    Directory of Open Access Journals (Sweden)

    Juan Pablo Sarmiento E.

    2009-01-01

    Full Text Available A partir de la investigación realizada en las notarías de Bogotá sobre la implementación de la Sentencia C-075 de 2007 de la Corte Constitucional, que permite la declaración de unión marital de hecho entre parejas homosexuales, se argumenta que, pese al amplio margen de aplicación de esta sentencia, alguna de estas oficinas ejercen formas de violencia simbólica y discriminación y rechazan de las parejas que intentan realizar dicho trámite. Ello permite constatar que las uniones maritales de hecho están lejos de construir un espacio que atenúa la discriminación contra la diversidad sexual.

  14. Femicidio/Feminicidio: Una Salida Emergente de las Mujeres Frente a la Violencia Ejercida en Contra de Ellas

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    Nayibe Paola Jiménez Rodríguez

    2011-06-01

    Full Text Available El femicidio/feminicidio nace en el marco de la violencia extrema contra las mujeres, como concepto que la visibiliza, y se ha desarrollado con la fundamentación de las corrientes feministas posicionándolo políticamente a tal punto que obtuvo la sanción y protección de instrumentos internacionales; igualmente, en razón a la preocupación de los Estados por este fenómeno ysus repercusiones. Países latinoamericanos han desarrollado legislaciones internas en el campo penal para evitar estas conductas; sin embargo, Colombia no ha sido una de ellas, y actualmente, aunque ha implementado varias normas en pro de la protección de las mujeres, se encuentra en el debate y asimilación de dicho concepto.

  15. Superdosagem da vacina 17DD contra febre amarela, em uma região do sul do Brasil

    Directory of Open Access Journals (Sweden)

    Marcelo Carneiro

    2011-04-01

    Full Text Available INTRODUÇÃO: A febre amarela é uma arbovirose prevenível por uma vacina eficaz e segura. MÉTODOS: Acompanhamento clínico prospectivo de 49 pessoas que receberam uma superdosagem equivocada de vacina contra febre amarela, durante o surto de 2009, em uma localidade rural do Vale do Rio Pardo, no interior do Rio Grande do Sul. RESULTADOS: Durante os 45 dias de acompanhamento clínico, em apenas 1 (2,1% caso houve a manifestação de um possível viscerotropismo agudo leve, como evento adverso pós-vacinal. CONCLUSÕES: No grupo de pessoas acompanhadas, após a superdosagem de vacina antiamarílica, percebeu-se a quase total inexistência de eventos adversos.

  16. La lucha contra la trata en la UE: los retos de la cooperación judicial penal transfronteriza

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    Mirentxu Jordana Santiago

    2015-12-01

    Full Text Available La lucha contra la trata de seres humanos plantea numerosos retos para la Unión Europea. La dimensión multilateral de los casos dificulta la tarea de las autoridades nacionales, comportando en la práctica persecuciones y enjuiciamientos limitados y parciales que perpetúan la impunidad de estos delitos. Ante esta problemática, la Unión apuesta por un enfoque integrado de las investigaciones, que requiere explorar las potencialidades de la cooperación judicial penal, ámbito en el que Eurojust, la unidad de cooperación judicial penal de la Unión, desempeña un papel relevante.

  17. Homofobia: a influência da credibilidade da fonte na expressão do preconceito contra os homossexuais

    OpenAIRE

    Martins, Tânia Raquel Gonçalves

    2013-01-01

    Mestrado em Psicologia Social e das Organizações Um grande número de teorias sobre o papel das normas sociais identificou uma norma geral de inibição de expressão do preconceito na população (Crandall, Eshleman & O’Brien, 2002). Esta norma tem sido chamada de norma antipreconceito. A sua base assenta em valores igualitários e a sua força na repressão da expressão de atitudes preconceituosas contra grupos minoritários. No entanto, se a pressão da norma leva a uma diminuição substancial na e...

  18. La comunicación gubernamental de la guerra contra el narcotráfico en México

    OpenAIRE

    Roberto Jahaziel Reyes Tiro; José Antonio O\\u2019Quinn Parrales

    2013-01-01

    El presente artículo aborda la estrategia de seguridad planteada por el presidente Felipe Calderón Hinojosa en contra del narcotráfico y la manera en que la manejó desde el terreno de la comunicación. Esto con el objetivo de analizar en qué aspectos dentro de la comunicación gubernamental se debió prestar mayor atención para lograr legitimar ante la población esta acción y de esta manera lograr una percepción favorable en la opinión pública sobre la imagen del presidente y de su estrategia....

  19. La intervención del trabajo social en la prevención de la violencia contra las mujeres

    OpenAIRE

    Juan Carlos Gómez Becerra; María Himelda Ramírez Rodríguez

    2007-01-01

    El propósito de este artículo es caracterizar la intervención del trabajo social en la prevención de la violencia contra las mujeres, a partir de la definición de los términos y las perspectivas analíticas que han guiado la experiencia de cooperación entre el Fondo de Documentación Mujer y Género de la Facultad de Ciencias Humanas de la Universidad Nacional de Colombia y la Campaña del Lazo Blanco. Esta es una iniciativa mundial de un grupo de hombres que buscan la sensibilización de la comun...

  20. CRESCIMENTO DO MARACUJAZEIRO AMARELO SOB ESTRESSE SALINO E BIOFERTILIZAÇÃO EM AMBIENTE PROTEGIDO CONTRA PERDAS HÍDRICAS

    OpenAIRE

    José Lucínio de Oliveira Freire; Lourival Ferreira Cavalcante; Alex Matheus Rebequi; Thiago Jardelino Dias; Montesquieu da Silva Vieira

    2012-01-01

    O objetivo do trabalho foi avaliar a influência do biofertilizante bovino e cobertura morta vegetal no crescimento vegetativo do maracujazeiro amarelo irrigado com água não salina e salina em ambiente protegido contra perdas hídricas. O experimento foi conduzido no período de outubro de 2008 a abril de 2009, no município de Remígio, Paraíba. O delineamento estatístico foi em blocos casualizados, em esquema fatorial 2x2x2, referente à água não salina (0,5 dS m-1) e salina (4,5 dS m-1), sem e c...

  1. La violencia de género contra las mujeres mayores. Un acercamiento socio-jurídico

    OpenAIRE

    Gracia Ibáñez, Jorge

    2012-01-01

    A pesar de la imagen arquetípica que parece identificar a las víctimas de la violencia de género con una mujer joven o de mediana edad, existe evidencia empírica que demuestra que también las mujeres mayores son víctimas de violencia en el marco de sus relaciones de pareja. En este artículo, más allá de la regulación legal contenida en la Ley Orgánica 1/2004, de 28 de diciembre, de Medidas de Protección Integral contra la Violencia de Género, se argumenta la necesidad de una...

  2. Produção e caracterização de anticorpos monoclonais contra o vírus da bronquite infecciosa das galinhas

    Directory of Open Access Journals (Sweden)

    Cardozo R.M.

    2001-01-01

    Full Text Available Um painel de anticorpos monoclonais (AcM específicos contra o vírus da bronquite infecciosa das galinhas (VBIG amostra Massachusetts M41 foi desenvolvido com a finalidade de possibilitar ferramentas para futuros estudos de amostras locais de VBIG. Os clones produtores de AcM foram detectados e caracterizados por ELISA, e para a determinação quanto à especificidade ao componente de VBIG foi utilizado western blotting (WB. Os híbridos produtivos foram clonados por diluição limitante, expandidos in vitro e mantidos em nitrogênio líquido. As bandas protéicas reconhecidas em WB pelos AcM apresentaram pesos moleculares que variaram de 180 a 30 kDa. Oito AcM reconheceram apenas um polipeptídeo e quatro ligaram-se ao polipeptídeo S (3, 18, 52 e 57 inteiro, com a banda de peso molecular aproximado de 180 kDa. Cinco AcM (5, 12, 41, 70 e 72 ligaram-se em mais de uma banda de VBIG. Outros sete AcM não se ligaram a nenhum polipeptídeo de VBIG. Entre os AcM que apresentam perspectivas de utilização em pesquisa e diagnóstico de VBIG incluem-se os produzidos pelo clone 42, dirigido contra S1, os produzidos pelos clones 34, 43 e 71, dirigidos contra S2, pelos clones 7 e 22, dirigidos contra M e pelos clones 15 e 50, cujos AcM reagiram contra a nucleoproteína N.

  3. Recomendaciones en la prescripción del entrenamiento con pesas (contra resistencia para diabéticos e hipertensos

    Directory of Open Access Journals (Sweden)

    Jessenia Hernández Elizondo

    2004-01-01

    Full Text Available El organismo humano es capaz de mantener un control bastante preciso de los niveles de glucosa sanguínea durante el reposo y en condiciones de ejercicio, sin embargo las concentraciones de insulina en personas con diabetes no responden al ejercicio de manera normal, y el equilibrio entre la utilización de glucosa periférica y hepática se puede alterar. A pesar de lo anterior, se ha considerado que el ejercicio físico es un elemento clave que provee grandes beneficios a la persona diabética. Por otra parte, una de las patologías que está muy asociada con la diabetes es la hipertensión o presión arterial alta (Hipertensión. Cuando queremos prescribir ejercicio en personas hipertensas debemos recordar que el entrenamiento con pesas no mejora la condición cardiovascular, pero sí hace que los músculos y huesos sean más fuertes y se incremente el metabolismo. El presente trabajo se realizó con el propósito de dar a conocer a los profesionales en Educación Física y en Ciencias del Movimiento Humano, los ejercicios de pesas (contra resistencia que no se recomiendan en la prescripción de programas para personas que padecen de diabetes e hipertensión. Además de proveer una herramienta descriptiva y útil para la educación de todas las personas interesadas en la actividad física y especialmente para aquellos que realizan entrenamiento contra resistencia

  4. Building Economic Security Today: making the health-wealth connection in Contra Costa county's maternal and child health programs.

    Science.gov (United States)

    Parthasarathy, Padmini; Dailey, Dawn E; Young, Maria-Elena D; Lam, Carrie; Pies, Cheri

    2014-02-01

    In recent years, maternal and child health professionals have been seeking approaches to integrating the Life Course Perspective and social determinants of health into their work. In this article, we describe how community input, staff feedback, and evidence from the field that the connection between wealth and health should be addressed compelled the Contra Costa Family, Maternal and Child Health (FMCH) Programs Life Course Initiative to launch Building Economic Security Today (BEST). BEST utilizes innovative strategies to reduce inequities in health outcomes for low-income Contra Costa families by improving their financial security and stability. FMCH Programs' Women, Infants, and Children Program (WIC) conducted BEST financial education classes, and its Medically Vulnerable Infant Program (MVIP) instituted BEST financial assessments during public health nurse home visits. Educational and referral resources were also developed and distributed to all clients. The classes at WIC increased clients' awareness of financial issues and confidence that they could improve their financial situations. WIC clients and staff also gained knowledge about financial resources in the community. MVIP's financial assessments offered clients a new and needed perspective on their financial situations, as well as support around the financial and psychological stresses of caring for a child with special health care needs. BEST offered FMCH Programs staff opportunities to engage in non-traditional, cross-sector partnerships, and gain new knowledge and skills to address a pressing social determinant of health. We learned the value of flexible timelines, maintaining a long view for creating change, and challenging the traditional paradigm of maternal and child health.

  5. Durand de Huesca y la lucha contra el catarismo en la Corona de Aragón

    Directory of Open Access Journals (Sweden)

    Grau Torras, Sergi

    2009-06-01

    Full Text Available Durand of Huesca wrote three manuscripts against heresy and he was a prior from the Catholics Poor, an apostolic community based on the waldensian’s ideal of poverty. The Catholics Poor founded schools of study and hospitals to care and assist patients and poors , and they had an important social and cultural incidence in the Crown of Aragon. The first work of Durand, Liber Antiheresis, preserved in the National Library of Madrid, is treaty against the heresy and it is one of the few sources that exists in Spain to know about the doctrine of catharism and the origins of the waldensian. This source serves was also used as a base for later polemic works.

    Durand de Huesca escribió tres tratados contra la herejía y fue prior de los Pobres Católicos, una comunidad apostólica basada en los ideales de pobreza valdenses. Los Pobres Católicos fundaron escuelas de estudio y hospitales para el cuidado de los enfermos y tuvieron una importante incidencia social y cultural en la Corona de Aragón. La primera obra de Durand, el Liber Antiheresis, conservada en la Biblioteca Nacional de Madrid, es un tratado contra la herejía y es una de las pocas fuentes que existen en España para conocer la doctrina del catarismo y los orígenes de la valdesía. Este tratado sirvió también como base para obras posteriores.

  6. VACUNAS CONTRA EL HERPESVIRUS BOVINO-1: UNA MIRADA DESDE EL PASADO HACIA EL FUTURO DE LA INMUNIZACIÓN

    Directory of Open Access Journals (Sweden)

    Ruiz Saenz Julian

    2009-08-01

    Full Text Available El herpesvirus Bovino-1 (BHV-1 es uno de los principales patógenos que afecta el
    ganado; la infección primaria se acompaña de varias manifestaciones clínicas tales
    como la rinotraqueitis, aborto, vulvovaginitis/balanopostitis pustular y en algunos
    casos, enfermedad neurológica. Luego de la recuperación, la infección persiste durante
    toda la vida del individuo en un estado de latencia en ganglios nervioso trigémino o
    sacro. La Organización Mundial de Sanidad Animal (OIE reporta que la vacunación
    contra el BHV-1 puede ser efectiva en reducir las manifestaciones clínicas y en consecuencia
    las pérdidas económicas, pero no logra proteger completamente de la infección.
    Es por esto que durante los últimos años se han desarrollado gran cantidad
    de agentes vacunales que van desde las vacunas clásicas inactivadas hasta aquellas que
    usan tecnología de DNA recombinante. El presente artículo se enfoca en presentar una
    actualización acerca de las vacunas más usadas desde hace ya varios años y resumir los
    avances más importantes en la generación de nuevas vacunas contra el BHV-1;
    tratando así de abrir un nuevo panorama para la generación de vacunas en Colombia.

  7. PURIFICACIÓN DE IgY CONTRA LA SUBUNIDAD NR3 DEL RECEPTOR NMDA DE CEREBRO DE RATA

    Directory of Open Access Journals (Sweden)

    Gina Méndez C

    2008-04-01

    Full Text Available Objetivo. Obtener anticuerpos tipo IgY contra péptidos sintéticos de las subunidades NR3A y NR3B del receptor NMDA de ratas, para reconocer y seguir la expresión de estas subunidades en extractos de cerebro de rata de diferentes edades. Materiales y métodos. Se diseñaron dos péptidos empleando los sistemas de la base de datos Entrez y el programa ClustalW-PBIL de alineamientos múltiples contra las subunidades NR3A y NR3B del receptor NMDA; una vez sintetizados por el método SSPS-fmoc fueron utilizados para inocular gallinas (Gallus gallus, variedad Hy Line Brown de 16 semanas de edad; al cabo de 57 días postinoculación se purificó IgY específica y se enfrentaron a extractos de cerebro de rata postnatal y adulta. Resultados. Se detectaron las subunidades NR3A y NR3B y se relacionó su expresión con la edad del animal; siendo mayor la expresión de la subunidad NR3A en extracto de cerebro de rata postnatal. No se encontró diferencia marcada en la expresión de la subunidad NR3B en las edades mencionadas. Conclusiones. Esta es la primera investigación que emplea proteína nativa para el reconocimiento de la subunidad NR3 del receptor NMDA, lo cual muestra la especificidad de los anticuerpos generados y contribuye con el entendimiento de las funciones de este receptor y su relación con la regulación de la memoria espacial.

  8. Arte, cultura y lucha contra el cáncer en Las Tunas

    Directory of Open Access Journals (Sweden)

    Juan Ernesto Pérez Reyes

    2014-08-01

    Full Text Available Los avances científicos de hoy están permitiendo que el cáncer no se convierta en una sentencia inexorable de muerte. La cronificación del tratamiento plantea retos a los sistemas sanitarios, en su compromiso por ofrecer al enfermo el apoyo para enfrentar su nueva situación y devolverlo a la vida normal. Las complicaciones producto de los tratamientos, los efectos físicos secundarios, la modificación de las rutinas y el sentir que se vive bajo una amenaza, desestabilizan el balance emocional de muchos enfermos. El arte puede captar los más personales aspectos en la experiencia del cáncer. La creación artística puede unir a pacientes, familiares, amigos, al equipo sanitario y a la comunidad en su conjunto, aportando nuevos caminos para ayudar al paciente. La labor artística puede proveer de otros modos de expresión que no se encuentran en las formas tradicionales de tratamiento, permitiendo explorar temas intrínsecos del enfermo de forma creativa y personal. El arte puede comunicar con los aspectos más silenciados de la enfermedad, ayudando a las personas con escasas posibilidades para confesar sus experiencias. Bajo esta premisa el recientemente fundado capítulo provincial de la Sociedad cubana de oncología, radioterapia y medicina nuclear ha efectuado en Las Tunas varias actividades a partir del día tres de febrero del actual año, comenzando con la inauguración de la Jornada provincial de lucha contra el cáncer. La estrategia divulgativa contó con la colaboración del Grupo provincial para el control del cáncer, el Centro provincial del cine y el proyecto FILOARTMED de la Universidad médica de Las Tunas, quienes se han interesado en elevar la producción científica de los profesionales de la salud, que luchan por controlar el cáncer en el territorio. En la sala cinematográfica Titón del Teatro Tunas, se dieron cita los miembros del capítulo provincial de la Sociedad cubana de oncología, radioterapia y medicina

  9. Vacinas contra rotavírus e papilomavírus humano (HPV Vaccines against rotavirus and human papillomavirus (HPV

    Directory of Open Access Journals (Sweden)

    Alexandre C. Linhares

    2006-07-01

    Full Text Available OBJETIVOS: Sintetizar as estratégias para a obtenção de uma vacina contra rotavírus e papilomavírus humano (HPV, enfatizando-se o estágio atual das investigações quanto à segurança, reatogenicidade, imunogenicidade e eficácia. FONTE DOS DADOS: Os artigos publicados de 1996 a 2006, particularmente ao longo dos últimos 5 anos, representaram a fonte primária (base de dados: MEDLINE, PubMed, NIH, EUA, conferindo-se destaque aos recentes estudos envolvendo uma vacina contendo rotavírus atenuado de origem humana e dois tipos de vacinas para HPV testadas em humanos: as profiláticas e as terapêuticas. SÍNTESE DOS DADOS: Em relação às vacinas contra rotavírus, o contexto de estratégias compreendeu desde as preparações jennerianas até o advento da vacina com rotavírus atenuado de origem humana. Duas vacinas despontam como eficazes e seguras: uma, pentavalente, envolvendo vírus de bovinos e do homem; outra, de rotavírus atenuado oriundo da espécie humana, sendo que esta é avaliada em mais de 70.000 crianças no mundo. As vacinas contra HPV profiláticas visam impedir a infecção por esses vírus, enquanto que as vacinas terapêuticas pretendem tratar o indivíduo já infectado ou até o portador de uma lesão causada por HPV. As pesquisas com vacinas profiláticas começaram há alguns anos nos EUA e, hoje, aproximadamente 25.000 mulheres, em vários países, participam de estudos sobre essa vacina, que até o momento tem se mostrado segura, bem tolerada, altamente imunogênica e eficaz contra os tipos de HPV que causam as verrugas genitais e 70% dos casos de câncer do colo do útero. CONCLUSÕES:Uma vacina eficaz e segura contra rotavírus resultará em impacto significativo quanto à doença grave por esse enteropatógeno. Um programa global de imunizações que consiga atingir 60 a 80% das crianças durante os próximos 10 anos pode reduzir em pelo menos 50% as hospitalizações e a mortalidade por rotavírus. Antecipa

  10. Violência intrafamiliar: crimes contra a mulher na área metropolitana do Recife Violencia intra familiar: delitos contra la mujer en el area metropolitana de Recife Intrafamilial violence: criminal acts against women in Recife's metropolitan area

    Directory of Open Access Journals (Sweden)

    Zélia Maria de Melo

    2009-03-01

    Full Text Available Esta pesquisa pretende analisar a relação entre a organização familiar e a criminalidade contra a mulher, perpetrada por companheiro ou membro de sua família. Utilizamos a análise quantitativa descritiva para o exame dos documentos e a qualitativa (análise do discurso para as entrevistas semidirigidas realizadas com as vítimas e seus familiares. Os documentos foram provenientes dos processos judiciais disponíveis nos Fóruns de Jaboatão dos Guararapes, Olinda e Recife no biênio 2004/2006. Os resultados revelaram aspectos relevantes à prática da violência, tais como: ingestão de bebidas alcoólicas, ciúmes, rompimento da relação matrimonial por iniciativa da esposa / companheira e rivalidade de gênero.Esta investigación aspira analizar la relación entre la organización familiar y la criminalidad contra perpretada por compañero o miembro de su familia. Hemos empleado la análises estadística describida. Para la análisis Documental y cualitativa. (análisis del discurso. Para las entrevistas semidirigidas realizadas con las victimas y suyos familiares. Los documentos fueron originados provenidos de los procesos judiciales disponibles en los foros de “ Jaboatao dos Guararapes, Olinda y Recife en el bienio 2004/2006. Los resultados hubieran relevado aspectos relevantes para la práctica de la violencia, tales como: Ingestión de bebidas alcohólicas, celos, rompimento de la relación conjugal por iniciativa de la mujer/compañera y rivalidad de género.This research intends to analyze the relation between the family organization and the criminal acts against women, perpetrated by the partner or other family member. We used a descriptive quantitative statistics for the documental analysis and a qualitative one (speech analysis for the semi conducted interviews with victims and their relatives. The documents were from judicial processes available in Jaboatão dos Guararapes, Olinda and Recife Forums, in the biennium 2004

  11. Vaccines against papillomavirus infections and disease Vacunas contra el virus del papiloma humano y cáncer cervical invasor

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    Luisa Lina Villa

    2003-01-01

    Full Text Available Squamous cell carcinoma of the uterine cervix is the second cause of cancer-related deaths in women, the higher incidence being observed in developing countries. Infection with oncogenic types of human papillomavirus (HPV is considered the major risk factor for the development of malignancies in the uterine cervix. However, HPV is considered to be a necessary but not sufficient cause for cervical cancer and, therefore, other factors contribute to the carcinogenic process, both present in the environment and from the host. Studies performed in animals, and more recently in humans, indicate that vaccination against the capsid proteins of the virus can prevent efficiently from infection. Furthermore, therapeutic vaccines are under investigation aiming the regression of papillomavirus induced tumors. The scientific basis for the development of papillomavirus vaccines and present status of clinical trials will be addressed in this chapter.El cáncer de células escamosas del cérvix uterino es la segunda causa de muerte relacionada con cáncer en mujeres en el mundo; la incidencia más alta se ha observado en países en desarrollo. La infección con tipos oncogénicos de virus de papiloma humano es considerado el factor de riesgo principal para el desarrollo de malignidad en el cérvix uterino. Sin embargo, el virus es considerado una causa necesaria pero no suficiente para desarrollo de cáncer cervical y, por lo tanto, existen otros factores en el ambiente y en el huésped que contribuyen al proceso carcinogénico. Estudios desarrollados en animales, y más recientemente en humanos, indican que la vacunación en contra de la cápside de las proteínas del virus puede prevenir eficientemente la infección en forma profiláctica; además, las vacunas terapéuticas están bajo investigación con el propósito de promover regresión de los tumores inducidos por virus de papiloma humano. Las bases científicas de las vacunas desarrolladas contra este

  12. La política focalizada en el programa de vacunación contra el Virus del Papiloma Humano en México: aspectos éticos

    OpenAIRE

    Kirvis Janneth Torres-Poveda; Silvia Magali Cuadra-Hernández; Julieta Ivone Castro-Romero; Vicente Madrid-Marina

    2011-01-01

    Se plantea un análisis ético de aspectos relacionados con la introducción de nuevas vacunas contra el Virus del Papiloma Humano en México, cuya política de distribución atiende a la equidad más que a la igualdad y tiene como ejes fundamentales abarcar a las personas más vulnerables y al costo más bajo posible, es decir, atiende a los principios de justicia distributiva. El esquema inicial de vacunación contra este virus en México se ha focalizado a la población femenina más marginada, la cual...

  13. Controle químico de fungos associados a sementes de sorgo e proteção contra fungos do solo

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    Pinto Nicésio Filadelfo Janssen de Almeida

    2002-01-01

    Full Text Available Este trabalho teve como objetivo avaliar a eficiência de alguns fungicidas no controle de fungos associados a sementes de sorgo cultivar CMS 182R e na proteção delas contra fungos do solo. A microbiota das sementes de sorgo, composta por Fusarium moniliforme, Penicillium spp., Alternaria tenuis, Cladosporium spp. e Phoma sorghina, foi patogênica a essas sementes, e os fungos Pythium aphanidermatum e Sclerotium rolfsii, infectantes do solo de monocultivo de sorgo, também se mostraram patogênicos. Os fungicidas captan, thiram, captan + thiabendazole, thiram + thiabendazole, iprodione + thiram e tolylfluanid foram os mais eficientes no controle não só de toda a microbiota das sementes, como também na proteção das sementes contra Pythium aphanidermatum e Sclerotium rolfsii.

  14. La exégesis de la guerra global contra el terrorismo a través del cine y la televisión

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    Antonio Malalana Ureña

    2014-10-01

    Full Text Available El artículo indaga en la representación audiovisual de la Historia reciente, principalmente de la Guerra contra el terror. Nuestra investigación se centrará en como “Hollywood” ha interpretado alguno de los acontecimientos / The article investigates the audiovisual representation of recent history, especially of the War on Terror. Our investigation will focus on how Hollywood has interpreted some of the some of the events. Palabras Clave: Guerra global contra el terrorismo, cine, series de televisión _________________________ The exegesis of The War on Terror through film and televisionAbstract: The article investigates the audiovisual representation of recent history, especially of the War on Terror. Our investigation will focus on how Hollywood has interpreted some of the some of the events.Keywords: The War on Terror. Cinema. TV Series. 

  15. Título da página eletrónica: Observatorio de la Violencia de Género contra la Mujer

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    Tatiana Moura; Sílvia Roque; Júlia Garraio

    2013-01-01

    O Observatorio de la Violencia de Género contra la Mujer é da responsabilidade da Organização de Mulheres Salvadorenhas (ORMUSA), uma ONG feminista que trabalha, formalmente desde 1985, em prol da igualdade e justiça entre os sexos no país. Dedica‑se à sistematização e divulgação de dados sobre vários tipos de violência contra as mulheres em El Salvador (feminicídios, violência sexual, intrafamiliar e social), baseando‑se nos relatórios da polícia, do instituto de medicina legal e na observaç...

  16. Violência contra idosos: descrição de casos no Município de Aracaju, Sergipe, Brasil

    OpenAIRE

    Maria Pontes Campos de Aguiar; Heloiza Andrade Leite; Iris Melo Dias; Maria Claudia Tavares de Mattos; Wilma Resende Lima

    2015-01-01

    Objetivo: Descrever os casos de violência contra idosos no Município de Aracaju, Sergipe, Brasil. Métodos: Estudo descritivo que analisou documentos de 189 inquéritos abertos entre maio de 2012 a maio de 2013 no Departamento de Atendimento a Grupos Vulneráveis. Resultados: Dos inquéritos avaliados no período 112 inquéritos (66,3%) foram relacionados à violência contra idosos. Destes, 70,5% foram abertos por Boletim de Ocorrência, com predomínio a violência psicológica (40,2%), no domicílio (9...

  17. Tratamiento contra la rabia humana: un poco de su historia Tratamento contra a raiva humana: um pouco de sua histária A historical review of the treatment of human rabies

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    Maria Cristina Schneider

    1994-12-01

    Full Text Available El presente trabajo es una revisión histórica del tratamiento utilizado contra la rabia humana, desde la antigüedad hasta el momento actual. Pretende hacer una analogía entre el concepto de causa predominante en la época y el tipo de tratamiento utilizado. Los griegos antiguos tenían la diosa Artemisa como sanadora de la rabia y ya utilizaban la cauterización de la herida. Los pueblos del siglo I conocían la capacidad infecciosa en la saliva de perros rabiosos, llamando a ese material de veneno virus (en latín. En la Edad Media, cuando prevalecía un concepto mágico y religioso de la salud, el gran protector era San Humberto. Con el Renacimiento surgen nuevamente muchos experimentos y avances en el conocimiento de la enfermedad, que sentaron las bases para los importantes hallazgos en el futuro próximo. En esa época predominaba la teoría miasmática y del contagio. Pasteur fue un grande opositor de la espontaneidad de la rabia. A finales del siglo XIX, con los descubrimientos microbianos, Pasteur hizo la gran revolución científica en relación al tratamiento contra la rabia, que es la vacuna. Las vacunas pueden actualmente ser de tipo nervioso o no, variando también el numero de dosis recomendadas. Se han desarrollado muchos estudios sobre vacunas, siendo la más utilizada en América Latina del tipo Fuenzalida y Palacios, y la recomendada actualmente por la OMS es la de cultivo celular.Trata-se de uma revisão histórica sobre o tratamento utilizado contra a raiva, desde a antigüidade até o momento atual. Pretende-se fazer uma analogia entre o conceito de causa predominante na época, com o tipo de tratamento preconizado. Os gregos antigos tinham a deusa Artemisa como sanadora da raiva e já utilizavam a cauterização da ferida. Os povos do século I conheciam a infecciosidade na saliva de cães raivosos, chamando esse material de veneno ("virus" en latin. Na Idade Média, com um conceito mágico e religioso da saúde, o

  18. El tratamiento del acuerdo por las libertades y en contra del Terrorismo en los Medios de Comunicación El tratamiento del acuerdo por las libertades y en contra del Terrorismo en los Medios de Comunicación

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    Óscar García Luengo

    2004-01-01

    Full Text Available This study analyses the capacity of mass media in general, and particularly the press, in the complex process of setting the political priorities. The specific context where this theoretical framework of reference (agenda-set ming is employed is the Basque conflict. Moreover, after the application of quantitative methodology, the objective is to verify to what extent the Treatv for Libertv and Against Terrorism, signed by the two main Spanish political forces in December 2000, is the political result of a media stimulus.Este trabajo de investigación analiza la capacidad de los medios de comunicación en general, y de la prensa escrita en concreto, en el complejo proceso de elaboración del orden del día político. El contexto donde cobra sentido la aplicación del cuerpo doctrinal de referencia, el de Las teorías del Agenda-Setting, está circunscrito al conflicto del País Vasco. En definitiva, lo que se trata de verificar, tras la aplicación de una metodología escorada a planteamientos cuantitativos, es en qué medida el Acuerdo por las Libertades y en contra del terrorismo, firmado por las dos fuerzas políticas principales en diciembre de 2000, fue la respuesta política a un estímulo mediático.

  19. Caracterización molecular del mecanismo de patogénesis de las toxinas Cry de Bacillus thuringiensis activas contra insectos coleópteros

    OpenAIRE

    Contreras Navarro, Estefanía

    2013-01-01

    Los bioinsecticidas basados en Bacillus thuringiensis (Bt) constituyen una herramienta de gran valor para el control de plagas de insectos, ya que presentan una forma de aplicación muy específica e inocua para los usuarios y el medio ambiente. Entender, tanto el mecanismo de toxicidad de estos bioinsecticidas como la respuesta desencadenada en los insectos diana, tiene como objetivo proporcionar una base útil para el desarrollo de insecticidas mejorados dirigidos contra estas importantes plag...

  20. Los espejos no afectan de manera crónica variables psicológicas en mujeres que realizan un programa de entrenamiento contra resistencia o actividades pasivas

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    Isaura Castillo Hernández

    2015-09-01

    Full Text Available El propósito del estudio fue examinar el efecto crónico de la presencia de espejos en el entorno en el que se realiza ejercicio contra resistencia o actividades pasivas, sobre variables psicológicas de ansiedad fisicosocial (AFS, consciencia corporal objetivada (inspección corporal, IPC; vergüenza corporal, VC; y creencias de control de la apariencia, CCA; y sobre algunas variables de la imagen corporal, como la satisfacción con las partes del cuerpo (SPC, la silueta actual, la silueta deseada, y la satisfacción corporal (SC. Participaron 52 mujeres (promedio de edad 22,6 ± 8,21 años, quienes fueron asignadas aleatoriamente a cuatro grupos experimentales: a 25 min de ejercicios contra resistencia al 70 % de 1 Repetición Máxima (1RM con espejo, b 25 min de ejercicios contra resistencia al 70  % de 1RM sin espejo, c 25 min de actividades pasivas con espejo y d 25 min. de actividades pasivas sin espejo. Las participantes realizaron una sesión semanal de tratamiento, durante seis semanas. No se encontraron interacciones dobles o triples importantes. Las pruebas de ANOVA revelaron efectos principales de la medición sobre la inspección corporal (p = 0,04, sobre la silueta deseada (p ≤ 0,001 y sobre la SC (p < 0,05; y del ejercicio sobre la silueta actual (p = 0,03. Se concluye que no se observa un efecto crónico de un programa de ejercicios contra resistencia o de actividades pasivas realizadas por mujeres en variables psicológicas cuando el ejercicio o las actividades se realizan en un contexto con y sin espejos.

  1. Cultural Characteristics and Biotype Identification of Isolate RSXJ-1 of Ralstonia solanacearum%烟草青枯病菌分离株RSXJ-1的培养性状及其生物型鉴定

    Institute of Scientific and Technical Information of China (English)

    崔朝宇; 张超群; 周泽科; 蒋军喜

    2012-01-01

      A tobacco plant with typical symptoms of bacterial wilt was collected from Xiajiang county of Jiangxi province. A bacterial isolate was obtained from the plant using gradient dilution isolation method, ant it was named RSXJ-1. With completion of its pathogenicity test, the isolate was identified molecularly as Ralstonia solanacearum. This paper investigated the cultural characteristics of the bacterial isolate on different media. The results showed that cultural characteristics of the bacterial isolate were consistent with the cultural characteristics of R. solanacearum. Experiment of biotype identification of the isolate was also conducted. The results showed that the isolate had the ability of both oxdizing lactose, maltose, cellobiose, mannitol, and sorbitol to produce acid and reducing nitrate. However, it had no ability of oxdizing dulcitol to produce acid. According to the results, the isolate was identified as biotypeⅢ-1 of R. solanacearum.%  从江西省峡江县烟区采集呈典型症状的青枯病烟株,采用平板梯度稀释分离法分离获得一株病原菌分离株,命名为 RSXJ-1.在完成致病性测定的基础上,通过分子生物学方法将该菌株鉴定为茄科劳尔氏菌(Ralstonia solanacearum).本文研究了该菌株在不同培养基上的培养性状,结果表明该菌株的培养性状与R. solanacearum的培养性状相一致;对该菌株进一步进行生物型研究,结果显示该菌株能利用乳糖、麦芽糖、纤维二糖、甘露醇和山梨醇氧化产酸并能还原硝酸盐;而不能利用甜醇氧化产酸,据此将该菌株鉴定为生物型Ⅲ-1.

  2. Estudo comparativo da capacidade de contração do assoalho pélvico em atletas de voleibol e basquetebol

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    Ariana Oliveira Reis

    2011-04-01

    Full Text Available As modalidades esportivas de alto impacto podem produzir um aumento exagerado e frequente na pressão intra-abdominal, um dos fatores desencadeadores da incontinência urinária de esforço (IUE em atletas. Foi realizado um estudo com 20 atletas, sendo 10 de basquetebol e 10 de voleibol, do tipo quantitativo, observacional, transversal e comparativo, no qual foi comparada a capacidade de contração do assoalho pélvico (AP entre atletas de voleibol e basquetebol, e então correlacionadas com sintomas de IUE. A avaliação das atletas foi composta por um questionário, a avaliação funcional do assoalho pélvico (AFA e avaliação da capacidade de contração do AP através do Biofeedback Eletromiográfico Fênix®. Após a avaliação, não foi observada diferença estatisticamente significante com relação à capacidade de contração do assoalho pélvico entre atletas de basquetebol e voleibol; porém, ambas as modalidades apresentaram atletas com relatos de perda involuntária de urina mediante esforço físico, com maior proporção no grupo de atletas de basquetebol.

  3. La ley española de medidas de protección integral contra la violencia de género

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    María Dolores Santos Fernández

    2005-01-01

    Full Text Available En este artículo se presenta un análisis de la respuesta que el Estado español ha dado a la violencia contra la mujer, a través de la “Ley de Protección integral contra la violencia de género”. Hay un reconocimiento de la violencia como delito contra otra persona en condiciones que le son desfavorables y pueden afectar seriamente su vida emocional y física. El Estado reconoce esa realidad como un asunto de derechos humanos, y por lo tanto es su obligación garantizarle a la mujer maltratada –y a sus niños– suficiente protección jurídica. De igual manera, se destaca la importancia de esta Ley para regular los espacios laborales, sociales, educativos, comunicativos y publicitarios, donde se pueda hacer una utilización mercantil de la figura femenina y sus valores en detrimento de la misma. La labor de sensibilización y de educación que debe cumplir el Estado a través de esta Ley implica el desarrollo de un programa general de educación ciudadana que permita concienciar tanto a hombres como mujeres de principios de paz y de tolerancia, con la finalidad de alcanzar una convivencia democrática entre todos.

  4. La historia sacra del Santísimo Sacramento contra las heregias destos tiempos"An iconographic study of the engravings illustrating the work

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    Calvo Portela, Juan Isaac

    2014-01-01

    Full Text Available En este artículo se hace un estudio iconográfico de las dos estampas que ilustran el libro del dominico fray Alonso de Ribera, La Historia Sacra del Santissimo Sacramento contra las heregias destos tiempos, editado por Luis Sánchez en Madrid en 1626. En dichas estampas se plasman dos aspectos que van a ser fundamentales de la religiosidad contrarreformista española del siglo XVII, la defensa a ultranza de la Eucaristía y la lucha contra la herejía. In this article is made an iconographic study of the two prints that illustrate the book of the Dominican Fray Alonso de Ribera, La Historia Sacra del Santissimo Sacramento contra las heregias destos tiempos, edited by Luis Sanchez in Madrid in 1626. In these prints are reflected two aspects that are going to be essential on the religiosity Spanish Counterreform of the seventeenth century, the stubborn defense of the Eucharist and the fight against heresy.

  5. Violencias contra las mujeres. Debates parlamentarios ¿en el camino a la equidad de género?

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    Manuela Graciela González

    2015-09-01

    Full Text Available En los años 2012 y 2013, se han sancionado en nuestro país una serie de leyes que pretenden dar respuesta a las violencias cotidianas, a veces visibles y a veces invisibles que sufren las mujeres por el sólo hecho de serlo. Nos proponemos realizar un análisis de los debates parlamentarios previos a la sanción de la ley 26.738 (2012 que suprime del Código Penal la institución del avenimiento, de la ley 26.791 (2012 que tipifica el femicidio, de la ley 26.842 (2012 que reforma la legislación sobre Prevención y Sanción de la Trata de Personas y Asistencia a sus Víctimas y de la ley 26.879 (2013 de creación del Registro Nacional de Datos Genéticos vinculados con delitos sexuales. El presente trabajo se propone describir y analizar los debates parlamentarios de leyes penales sancionadas como respuesta ante la creciente visibilización de las violencias contra las mujeres, indagando sobre la presencia o ausencia de perspectiva de género en el debate parlamentario y en la construcción discursiva del derecho desde una perspectiva feminista.

  6. Juan José Heydeck, un alemán en la corte de Carlos IV: experimentos contra la viruela

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    Ramírez Martín, Susana María

    2006-12-01

    Full Text Available First years of the XIX century, Juan José Heydeck proposes the realization of the experiments with the pus of the goats instead of the pus of the cows, for combat the smallpox. This experiments require more childrens, where to be verified them. In Spain, the pus of the goats will be the one alternative to the pus of the cows. In this country is dificult fall in with the pus of the cows. This iniciative haven´t the hope results.

    En los primeros años del siglo XIX, Juan José Heydeck propone la realización de unos experimentos con el pus de cabras en lugar del pus de vacas, para luchar contra las viruelas naturales. Estos experimentos requerían un número indeterminado de niños donde verificarlos. En España, el pus de cabras sería una alternativa al pus de vaca. En estos territorios era difícil encontrar el pus de vacas. Esta iniciativa del pus hircino no tuvo el éxito esperado.

  7. Anticuerpos monoclonales contra la Gonadotropina Corionica Humana (HCG y su empleo en el diagnóstico precoz del embarazo.

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    Torres E

    2006-03-01

    Full Text Available Se describe la obtención y caracterización de anticuerpos monoclonales contra la hormona gonadotropina cariónica humana (HCG, seleccionados de la inmunización subcutánea en ratones BALB/c. Se reporta también el desarrollo del sistema rápido HeberFast Line® Embarazo, para la detección de la hormona en muestras de orina, basado en los anticuerpos obtenidos y la tecnología del flujo lateral desarrollada en membranas de nitrocelulosa como soporte sólido. El nivel de sensibilidad alcanzado con este sistema diagnóstico es de 20 UI/L de HCG en muestra de orina, y no se observó reactividad cruzada en analitos similares conteniendo concentraciones de las glicohormonas relacionadas; 1000 IU de LH, 5000 IU de FSH, y 1000 µIU de TSH respectivamente. Los estudios de estabilidad arrojaron, que el diagnosticador mantine las características de funcionalidad por un tiempo de 15 meses a temperaturas entre 2 y 30 ºC, conformando este el tiempo de vigencia del sistema. De poseer en Farmacias, Consultorios Médicos de la Familia y Hospital Gineco-Obstétricos, un sistema rápido y sencillo como el establecido en este trabajo, se pueden evitar todos los riesgos e inconvenientes que acarrean los procesos de interrupción del embarazo en la mujer.

  8. Residentes de pediatria diante da violência doméstica contra crianças e adolescentes

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    Maria Lúcia de Moraes Bourroul

    2008-12-01

    Full Text Available Buscou-se compreender as percepções de residentes de pediatria diante da violência doméstica contra crianças e adolescentes (VDCA. Realizou-se estudo qualitativo, com 67 residentes, inseridos em nove dos 15 programas existentes no município de São Paulo, com questionários semi-estruturados e entrevistas em profundidade com nove sujeitos. A quase totalidade expressou medo e caracterizou a formação como insuficiente. As falas dos sujeitos sugerem discriminação e estranhamento diante do outro, caracterizando situação onde sociedades diferentes aparecem como ameaçadoras. Diagnosticar VDCA foi a atribuição do pediatra mais reconhecida pelos entrevistados; embora metade deles tenha citado a notificação, poucos notificariam com relatório médico. Há etapas do atendimento da criança sob risco de violência a ser mais bem entendidas. Questões do residente, como o medo, devem ser consideradas para que ele possa reconhecer a criança na sua alteridade e desempenhar melhor seu papel.

  9. La violencia intrafamiliar contra la mujer en Colombia: ¿Cuestión de género?

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    Rocío Vásquez Fruto

    2008-07-01

    Full Text Available Resumen:Este artículo tiene como objetivo general analizar la influencia de los asuntos de género en la problemática dela violencia intrafamiliar contra la mujer, a partir de una mirada a la forma en que las relaciones en la familia dancuenta de una interpretación de lo que es ser mujer o de lo que es ser hombre; de la forma en que las mujeresasumen su lugar de víctimas y permanecen en él sin poder salir del círculo de la violencia y de las justificacionesde los agresores fundamentadas en factores culturales relacionadas con el género. La problemática de la violenciaintrafamiliar como delito contra la familia y su relación con el género, se aborda desde la perspectiva sociojurídicay psicoanalítica. Se pretende demostrar que cada caso de violencia intrafamiliar contra la mujer, representa símbolose ideales construidos desde la cultura, en los primeros espacios de socialización, que encuentran tierra fértilen una estructura psíquica y una posición asumida, a partir de las expectativas de ser mujer o de ser hombre ode no saber que se es. Por ello se hace necesario descifrar la especificidad del caso para que la misma personaconstruya su saber sobre el sentido que tiene para ella su posición de víctima. A partir de algunos aportes realizadosdesde la perspectiva psicoanalítica, puede afirmarse que la estructura psíquica de las mujeres y hombresinvolucrados en situaciones de violencia en el hogar es determinante, pero está soportada igualmente en la culturacon sus imaginarios construidos sobre el comportamiento esperado por parte de hombres y mujeres y la forma derelacionarse entre ellos. Es por esa razón que a pesar de la existencia de una amplia normatividad vigente, quepretende contribuir a la solución de la violencia intrafamiliar contra la mujer, este problema persiste y las normasno bastan para enfrentarlo.Palabras claves: violencia intrafamiliar, género, víctima, estructura psíquica, normas, derechos humanos

  10. Violencia laboral contra jornaleras agrícolas en tres comunidades del noroeste de México

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    Ma. del Carmen Arellano Gálvez

    2014-01-01

    Full Text Available El objetivo de este artículo es analizar las formas de violencia laboral contra mujeres jornaleras agrícolas en tres comunidades de Sinaloa, Sonora y Baja California, para lo que se utilizó una metodología cualitativa, a través de entrevistas grupales que se les hicieron a ellas. Los resultados señalan que las trabajadoras reconocen la violación a sus derechos laborales, como no contar con servicios médicos para ellas y sus hijos, ni ingresos por faltar al trabajo cuando éstos enferman y menos opciones laborales durante el embarazo. A diario viven el acoso y el hostigamiento ejercido por hombres posicionados en distintas jerarquías laborales, pero no son pasivas ante la violencia, ya que diseñan estrategias de autocuidado. Otras se organizan para brindar asesoría a mujeres sobre sus derechos laborales y las acompañan en los procesos de denuncia y búsqueda de justicia.

  11. Apontamentos sobre preconceitos de gênero e a violência contra a mulher no Brasil

    Directory of Open Access Journals (Sweden)

    Claudia Ramos de Souza Bonfim

    2016-08-01

    Full Text Available Este estudo é qualitativo-bibliográfico. Fundamenta-se especialmente em Bonfim, Instituto Avon e na Legislação Brasileira. Objetiva-se abordar a influência da educação familiar, de origem machista-patriarcal na consolidação de preconceitos, desigualdades e  violências sofridas pelas mulheres. Questiona-se: Como a educação familiar influencia a  violência contra a mulher? Porque as muitas mulheres em situação de violência não denunciam as agressões sofridas? Afirma-se, que as experiências sócio-afetivas-culturais da vividas na infância e adolescência especialmente vivenciadas no âmbito familiar são basilares para a superação de preconceitos e violências de gênero, pois os filhos tendem a reproduzir, ainda que de maneira inconsciente, o comportamento e as atitudes de seus pais. Considera-se, que embora no âmbito legal, houve uma evolução do ordenamento jurídico brasileiro na tentativa de coibir as violências historicamente sofridas pelas mulheres, é a educação, especialmente familiar, pautada numa perspectiva humanizadora e emancipatória que contribui significativamente para a superação do machismo e da desigualdade de gênero.

  12. La violencia sexual en contra de las mujeres como estrategia de despojo de tierras en el conflicto armado colombiano

    Directory of Open Access Journals (Sweden)

    Lina-María Céspedes-Báez

    2010-12-01

    Full Text Available El presente artículo parte de la evidencia que ha sido recogida por diversas organizaciones, tanto nacionales como internacionales, en materia de la interrelación entre la violencia sexual en contra de las mujeres, el desplazamiento forzado y el despojo en el conflicto armado colombiano. Para el efecto, utiliza el concepto de regímenes de violencia sexual, a fin de realzar el que los fines perseguidos por la conducta no se agotan siempre en el simple consumo, sino que, dependiendo del contexto, pueden estar conectados con objetivos más amplios dentro del repertorio estratégico de los actores armados. Asimismo, el documento admite la dificultad de la prueba de esta correlación en las instancias judiciales pertinentes, por lo cual plantea la posibilidad de crear una presunción desvirtuable, en el ámbito del estado de cosas inconstitucional declarado por la sentencia T-025 de 2004, que morigere la carga de la prueba de las víctimas y sirva como un catalizador para promover nuevos arreglos de género.

  13. La guerra de los Estados Unidos contra la inmigración. Efectos paradójicos1

    Science.gov (United States)

    Massey, Douglas S.; Pren, Karen A.

    2016-01-01

    Resumen A finales de la década de los cincuenta, Estados Unidos permitía la entrada de aproximadamente medio millón de inmigrantes mexicanos al año, de los cuales 450.000 entraban con visados de trabajo temporal y 50.000 llegaban con visados de residentes permanentes. A mediados de los años sesenta, los cambios en la política migratoria de Estados Unidos realizados en nombre de los derechos civiles redujeron drásticamente las oportunidades de entrada legal a Estados Unidos. Se eliminaron los visados de trabajo temporal y se limitaron los visados de residentes a 20.000 por año. Con las oportunidades de entrada legal restringidas, los flujos migratorios ya establecidos simplemente continuaron, fuera de los límites legales, dando comienzo a una inesperada reacción en cadena de eventos que culminaron en una guerra total contra los inmigrantes y el rápido crecimiento -sin precedentes- de población residente no autorizada en Estados Unidos. El presente artículo demuestra que el aumento de inmigración indocumentada en los Estados Unidos y el crecimiento de la población sin papeles son un producto de políticas migratorias y fronterizas mal concebidas. PMID:27076695

  14. Prevalencia de anticuerpos contra Trypanosoma cruzi en donadores de sangre del IMSS, Orizaba, Veracruz, México

    Directory of Open Access Journals (Sweden)

    Ramos-Ligonio Angel

    2006-01-01

    Full Text Available OBJETIVO: Determinar la prevalencia de anticuerpos contra Trypanosoma cruzi en donadores del Hospital General Regional del Instituto Mexicano del Seguro Social (IMSS en la ciudad de Orizaba, Veracruz. MATERIAL Y MÉTODOS: Se examinaron muestras de donadores del banco de sangre del Hospital General Regional (HGRO del IMSS para la búsqueda de antiT. cruzi por ELISA, Western blot e IFI, utilizando una proteína recombinante (MBP::Hsp70 y un extracto crudo de epimastigotes. Las muestras fueron obtenidas entre los meses de octubre de 2001 a enero de 2002. RESULTADOS: Los 420 donadores de sangre analizados fueron seronegativos para HBV, HCV, BrA, VDRL y HIV. Después del tamizaje de los 420 donadores, se identificaron dos individuos seropositivos por las pruebas de ELISA, Western blot e IFI, con una seroprevalencia de 0.48%. CONCLUSIONES: En este estudio se muestran evidencias de seropositividad para T. cruzi en donadores de sangre del HGRO, lo que sugiere la existencia de riesgo de contaminación por transfusión sanguínea. Por tal motivo, es necesario aplicar programas para el tamizaje serológico a través de técnicas inmunológicas con alta sensibilidad y especificidad.

  15. Perfil de homens autores de violência contra mulheres detidos em flagrante: contribuições para o enfrentamento

    Directory of Open Access Journals (Sweden)

    Alexandra Bittencourt Madureira

    2014-12-01

    Full Text Available Objetivo: Delinear o perfil de agressores detidos em flagrante delito e da violência que perpetraram contra mulheres no período de implantação e consolidação da lei Maria da Penha, em um município da região central do estado do Paraná. Métodos: Pesquisa retrospectiva documental, realizada mediante apreciação de 130 Autos de Prisão, analisados pela estatística descritiva. Resultados: Eram adultos jovens, casados, com baixa escolaridade e trabalho remunerado. 89,3% foram libertados sob pagamento de fiança. Eram, majoritariamente, cônjuges, que sob efeito de álcool, praticaram violência. Um número significativo já possuía outros registros de violência doméstica. Conclusão: A denúncia, como ação isolada, revelou-se insuficiente para interromper o ciclo da violência. É necessário voltar-se para além da denúncia, pela implantação de ações de enfrentamento articuladas entre os setores de saúde, educação, segurança, justiça e assistência social, voltadas à igualdade de gênero e a cultura de paz.

  16. Efeito do congelamento sobre a imunogenicidade da vacina contra a raiva produzida em tecido cerebral de camundongo

    Directory of Open Access Journals (Sweden)

    Albas Avelino

    2001-01-01

    Full Text Available A resposta imune humoral induzida pela vacina contra a raiva produzida em cérebros de camundongos recém-nascidos foi estudada em 23 cães e o teste de soroneutralização em camundongos foi usado para avaliação dos níveis de anticorpos rábicos. Um grupo com 10 animais recebeu vacina conservada de 2 a 8°C e apresentou os seguintes resultados: após 30 dias da vacinação 6 (60% amostras responderam ao teste; após 180 dias 4 (40% e após 360 dias apenas 1 (10%. O outro grupo com 13 cães recebeu vacina previamente congelada e somente 2 (15,4% amostras no dia 30 apresentaram resposta satisfatória; os demais períodos (180 e 360 após a vacinação, não foi encontrado título. A análise estatística dos dados referentes a cada uma das variáveis consideradas no estudo foi efetuada segundo a técnica de análise de variância seguida por Tuckey e indicaram diferenças estatisticamente significativas entre os grupos.

  17. MÉTODOS MULTIVARIADOS PARA ENCAUZAR LA MEJORA DE LA CALIDAD DE UNA VACUNA CONTRA EL CÁNCER

    Directory of Open Access Journals (Sweden)

    Aida Rodríguez Hernández

    2007-09-01

    Full Text Available

    Este trabajo se realizó con el objetivo de encontrar las relaciones entre las variables del proceso productivo y el patrón cromatográfico de una vacuna terapéutica contra el cáncer, característica esta indicativa de la reproducibilidad del producto. Primeramente se empleó el análisis de conglomerados (análisis de cluster para agrupar lotes de producción y posteriormente se empleó el análisis discriminante para encontrar la explicación de estas agrupaciones según las variables del proceso. La determinación de estas relaciones, unida a la búsqueda en la literatura, permitió señalar un camino para mejorar el proceso, dirigiendo el control hacia las variables más influyentes en la variabilidad del producto.

  18. La liga contra la ignorancia: burguesía y educación en la Valencia de 1880

    Directory of Open Access Journals (Sweden)

    Luis M. LÁZARO LORENTE

    2010-03-01

    Full Text Available RESUMEN: «Instruid y moralizad al pueblo, y no temáis ni la explosión violenta de las pasiones populares ni el triunfo del despotismo; instruid y moralizad al pueblo, y no temáis poner en sus manos el hierro y el fuego, porque él os devolverá el primero convertido en útiles instrumentos del campo y del taller y en poderosas máquinas, y hará del segundo la fuerza que debe ponerlas en movimiento». Estos consejos de Cirilo Amorós cerraban el primer discurso de la noche. Era el día 22 de julio de 1880. En el pabellón municipal de la Feria de Julio, se estaba inaugurando de forma oficial la Liga contra la Ignorancia. La culminación de un proceso iniciado —ese mismo año— meses atrás.

  19. Análisis del Informe del Comité contra la Tortura de Naciones Unidas de 2009 sobre Colombia

    Directory of Open Access Journals (Sweden)

    José Escribano Úbeda-Portugués

    2010-01-01

    Full Text Available El Comité contra la Tortura de Naciones Unidas en su Informe de 2009 sobre Colombia valora positivamente algunos avances del Estado colombiano en la ratificación de las normas del derecho internacional de los derechos humanos, aunque el Informe 2009 señala varios motivos de preocupación y recomendaciones para Colombia en temas como el reforzamiento de la independencia del Fiscal General de la Nación; la amnistía de facto; la amenaza a la independencia del Poder Judicial; las ejecuciones extrajudiciales; las desapariciones forzadas; la erradicación de detenciones masivas; la práctica de la tortura en centros penitenciarios; la violencia sexual como arma de guerra; la utilización militar de niños y niñas en el conflicto armado; o la reparación integral para las víctimas de tortura y otros tratos crueles, inhumanos o degradantes.

  20. Identificación de once candidatos vacunales potenciales contra la malaria por medio de la Bioinformática

    Directory of Open Access Journals (Sweden)

    Raúl Isea

    2010-12-01

    Full Text Available En este trabajo se propusieron once candidatos vacunales potenciales contra el Plasmodium falciparum, causante de la muerte de entre 2 y 3 millones de personas cada año. Los candidatos vacunales se seleccionaron mediante una búsqueda de fragmentos del genoma de P. falciparum que presentaban una clara evidencia antigénica y que, a su vez, están expresadas en cuatro estadios del ciclo de vida del parásito: esporozoito, merozoito, trofozoito y gametocito. Los candidatos finales, elegidos in silico con ayuda de las herramientas de la Bioinformática, son aquellos fragmentos ya secuenciados y contenidos en la base de datos PlasmoDB. Los identificadores de los candidatos son: PFC0975c, PFE0660c, PF08_0071, PF10_0084, PFI0180w, MAL13P1.56, PF14_0192, PF13_0141, PF14_0425, PF13_0322 y PF14_0598.

  1. Preparation of Zeolitic Imidazolate Framework-8 (ZIF-8) Membrane on Porous Polymeric Support via Contra-Diffusion Method

    KAUST Repository

    Tan, Xiaoyu

    2016-05-18

    In the last decade, many attempts were made to put metal organic frameworks (MOFs) in industrial applications, but most of these efforts weren’t successfully. As one of the few MOFs produced on industrial scale, ZIF-8 has interesting pore size, huge internal surface area and great thermal and chemical stability. Therefore, ZIF-8 might become the first MOF, which will be applied in industrial separation processes. In this thesis, a synthesis study is presented, which leads to a cheap and convenient way to
fabricate defect-free and thin ZIF-8 membranes on porous polymeric supports showing high selectivity and high gas permeance. The ZIF-8 layers were produced via a contra-diffusion method. Several polymeric membranes were employed as support in this study, such as PAN, PEI, PSU, PA and PTSC. We studied the influence of the polymeric support properties for the ZIF-8 membrane preparation and optimized the ZIF-8 preparation conditions. The ZIF-8 membranes were characterized via scanning electron microscopy (SEM) and X-ray diffraction (XRD). For gas permeation test, we chose a Wicke-Kallenbach apparatus to measure membrane’s gas permeance and selectivity. One of the best ZIF-8 membranes exhibited a hydrogen permeance of 3.45 × 10-8 mol m-2 s-1 Pa-1 and
an ideal selectivity of hydrogen over propane of about 500.

  2. Gender differences in proximal esophageal contractions Influência do gênero nas contrações do esôfago proximal

    Directory of Open Access Journals (Sweden)

    Roberto Oliveira Dantas

    2009-12-01

    Full Text Available CONTEXT: There are reports showing that gender has an influence on swallowing and on the contractions of the distal esophageal body. OBJECTIVE: In this investigation we studied the effect of gender on proximal esophageal contraction. METHODS: We studied 20 men (22-68 years old, median 39 years and 44 women (18-61 years old, median 41 years without symptoms and without gastrointestinal or respiratory diseases. We measured the time interval between the onset of pharyngeal contraction 1 cm proximal to the upper esophageal sphincter and the onset of the proximal esophageal contraction 5 cm from the pharyngeal recording. We also measured the amplitude, duration and area under the curve of the proximal esophageal contractions. The recording was performed by the manometric method with continuous perfusion. The contractions were recorded in duplicate after swallows of a 5 mL bolus of water. RESULTS: There were no differences between men and women in the interval between the onset of pharyngeal and of esophageal contractions or in the amplitude of esophageal contractions. The duration of contractions was longer in women (2.35 ± 0.60 s than in men (2.07 ± 0.62 s but the difference did not reach statistical significance (P = 0.087. The area under the curve of the esophageal contraction was higher in women (130.2 ± 55.2 mm Hg x s than in men (97.4 ± 49.4 mm Hg x s, P = 0.026. CONCLUSION: We conclude that there is a difference between men and women in the proximal esophageal contractions in response to wet swallows, although this difference is of no clinical relevance.CONTEXTO: Há trabalhos que demonstram a existência de diferenças entre homens e mulheres na deglutição e nas contrações em parte distal do esôfago. OBJETIVO: Neste trabalho estuda-se a influência do gênero nas contrações em parte proximal do esôfago de pessoas assintomáticas. MÉTODO: Incluíram-se 20 homens (22-68 anos, mediana 39 anos e 44 mulheres (18-61 anos, mediana 41

  3. Anafilaxia associada à vacina contra sarampo, caxumba e rubéola Anafilaxia asociada a la vacuna contra sarampión, varicela y rubéola Anaphylaxis associated with the vaccine against measles, mumps and rubella

    Directory of Open Access Journals (Sweden)

    Iolanda Maria Novadzki

    2010-04-01

    Full Text Available Estudo do tipo caso-controle cujo objetivo foi descrever os casos e as causas de anafilaxia associada à vacina contra sarampo, caxumba e rubéola. Foram estudados 22 casos notificados em crianças de Curitiba, PR, durante Campanha Nacional de Vacinação de 2004, que apresentaram manifestações mucocutâneas. Para o controle, foram selecionadas 66 crianças vizinhas dos casos, que não apresentaram sintomatologia após a aplicação vacinal. Foram realizadas dosagens séricas de anticorpos para os antígenos vacinais, IgE total e específicas para diversos alérgenos, e testes cutâneos. A resposta vacinal foi adequada, a dosagem de IgE específica e os testes cutâneos mostraram que os alérgenos potenciais constituintes da vacina e a atopia não foram relacionados às reações anafiláticas. Os testes cutâneos com a vacina e o dextrano foram positivos somente nos casos, sugerindo sensibilização por algum componente residual da vacina e possível reação cruzada com o dextrano.Estudio del tipo caso-control cuyo objetivo fue describir los casos y las causas de anafilaxia asociada a la vacuna contra sarampión, varicela y rubéola. Fueron estudiados 22 casos notificados en niños de Curitiba, Sureste de Brasil, durante Campaña Nacional de Vacunación de 2004, que presentaron manifestaciones mococutáneas. Para el control, fueron seleccionados 66 niños vecinos de los casos, que no presentaron sintomatología posterior a la aplicación vacunal. Fueron realizadas dosificaciones séricas de anticuerpos para los antígenos vacunales, IgE total y específicas para diversos alérgenos, y pruebas cutáneas. La respuesta vacunal fue adecuada, la dosificación de IgE específica y las pruebas cutáneas mostraron que los alérgenos potenciales constituyentes de la vacuna y la atopia no fueron relacionados a las reacciones anafilácticas. Las pruebas cutáneas con la vacuna y el dextrano fueron positivas solamente en los casos, sugiriendo

  4. Effects of environmental parameters on the dual-species biofilms formed by Escherichia coli O157:H7 and Ralstonia insidiosa, a strong biofilm producer isolated from a fresh-cut produce processing plant.

    Science.gov (United States)

    Liu, Nancy T; Nou, Xiangwu; Bauchan, Gary R; Murphy, Charles; Lefcourt, Alan M; Shelton, Daniel R; Lo, Y Martin

    2015-01-01

    Biofilm-forming bacteria resident to food processing facilities are a food safety concern due to the potential of biofilms to harbor foodborne bacterial pathogens. When cultured together, Ralstonia insidiosa, a strong biofilm former frequently isolated from produce processing environments, has been shown to promote the incorporation of Escherichia coli O157:H7 into dual-species biofilms. In this study, interactions between E. coli O157:H7 and R. insidiosa were examined under different incubating conditions. Under static culture conditions, the incorporation of E. coli O157:H7 into biofilms with R. insidiosa was not significantly affected by either low incubating temperature (10°C) or by limited nutrient availability. Greater enhancement of E. coli O157:H7 incorporation in dual-species biofilms was observed by using a continuous culture system with limited nutrient availability. Under the continuous culture conditions used in this study, E coli O157:H7 cells showed a strong tendency of colocalizing with R. insidiosa on a glass surface at the early stage of biofilm formation. As the biofilms matured, E coli O157:H7 cells were mostly found at the bottom layer of the dual-species biofilms, suggesting an effective protection by R. insidiosa in the mature biofilms.

  5. 罗尔斯顿菌(Ralstonia sp.)T6对三氯吡啶醇污染土壤的修复及能完全矿化毒死蜱工程菌株的构建%Remediation of 3,5,6-Trichloro-2-Pyridinol Polluted Soil With Ralstonia sp. T6 and Construction of a Chlor- pyrifos-Mineralizing Engineered Strain

    Institute of Scientific and Technical Information of China (English)

    张扬; 王飞; 黄彦; 崔中利

    2014-01-01

    TCP is a kind of metabolic product of degradation of chlorpyrifos. Ralstonia sp. T6, a TCP ( 3,5,6-trichloro-2-pyridinol) degrading strain of bacteria, was used in an experiment to explore its TCP degrading characteristics in soil. Results show that T6 degraded 80% of 50 mg·kg-1 TCP in 6 days. Temperature, inoculation rate and initial concentration of the substrate were factors affecting its degrading efficiency. The optimum temperature for T6 degrading TCP was 30℃;in soils lower than 10×108 CFU/kg in bacteria content, TCP biodegradation rate rose with rising bacteria content, while in soils higher than that, the rate did not rise, but fall instead with rising bacteria content. A methyl parathion hydrolase gene ( mpd) from Stenotrophomonas sp. DSP-1 was inserted into 16S rDNA of Ralstonia sp. T6 by conjugation and a genetically engineered T6-mpd that is supposed to be able to completely mineralize chlorpyrifos was obtained. Culturing tests show that T6-mpd and Ralstonia sp. T6 displayed similar growth characteristics. Chlorpyrifos degrading tests show that in LB medium, the chlorpyrifos hydrolysis efficiency of T6-mpd was basically the same as that of Stenotrophomonas sp. DSP-1, but in inorganic salt medium, T6-mpd′s 50 mg·L-1 chlorpyrifos hydrolysis rate in 60 h reached only 36%, significantly lower than DSP-1′s. Simulated in⁃situ soil remediation shows that T6-mpd, 10×108 CFU·kg-1 in content,could degrade 64% of 50 mg·kg-1 chlorpyrifos. It is, therefore, believed that strain T6-mpd is a promising tool for bioremediation of chlorpyrifos⁃contaminated environment.%以毒死蜱降解中间代谢产物3,5,6-三氯-2-吡啶醇(TCP)高效降解菌罗尔斯顿菌(Ralstonia sp.)T6为材料,研究其在土壤中对TCP的降解特性。结果表明,温度、接菌量和初始底物浓度对TCP的降解都有影响,T6菌株降解TCP的最适温度为30℃,当土壤含菌量〔以菌落形成单位(CFU)计〕小于10×108 kg-1

  6. Violencia contra la mujer en la pareja: determinantes y respuestas sociosanitarias Intimate partner violence: social and health determinants and responses

    Directory of Open Access Journals (Sweden)

    Isabel Ruiz-Pérez

    2004-05-01

    Full Text Available Este trabajo tiene como objetivo realizar una revisión del problema de la violencia contra la mujer en la pareja, así como determinar sus causas y consecuencias, analizando de forma específica el papel de los profesionales sanitarios. Frente al abordaje epidemiológico clásico de «factores de riesgo», Heise propone «un marco ecológico integrado» para el estudio y el conocimiento de la violencia contra la mujer. Este marco estudia los factores que actúan en 4 ámbitos: individual, familiar, comunitario y sociocultural. En España se presentó en enero de 2003 un total de 2.519 denuncias por violencia de género; entre enero y noviembre de 2003, se contabilizó un total de 69 mujeres muertas por esta causa. No parece existir un patrón geográfico en la mortalidad y la incidencia de denuncias, ni tampoco una relación entre las tasas de incidencia de denuncias y la mortalidad. La única encuesta de ámbito nacional publicada en España es la realizada por el Instituto de la Mujer en 1999, que da una prevalencia de maltrato en las mujeres del 9,2%. En Granada, en un centro de atención primaria, se obtuvo una frecuencia del 22,8%. Desde los servicios sanitarios, con los que la mayoría de las mujeres contactan en algún momento de su vida, se puede desempeñar un papel crucial para ayudar a las que son objeto de violencia. Las/los profesionales que están en los puestos de administración y gestión pueden contribuir a poner de manifiesto este problema de salud, teniendo presente que es una de las principales causas de mala salud e incapacidad. Es evidente que, más allá de las campañas de sensibilización y la detección precoz, se debería diseñar estrategias de salud pública dirigidas a prevenir este grave problema, cuyas causas pueden modificarse.The present study aims to review the problem of intimate partner violence, as well as its causes and consequences. It will also specifically analyze the role of health professionals. In

  7. Maus-tratos contra idosos no município de Camaragibe, Pernambuco Elder abuse in Camaragibe, Pernambuco

    Directory of Open Access Journals (Sweden)

    Victor Lopes de Melo

    2006-05-01

    Full Text Available OBJETIVOS: descrever a situação de maus-tratos contra idosos no município de Camaragibe, na região metropolitana do Recife, Pernambuco. MÉTODOS: estudo descritivo de corte transversal com uma amostra representativa da população idosa do município, e submetida a questionário previamente elaborado conforme os objetivos do estudo. RESULTADOS: dos 315 idosos, 95,4% estavam na sexta e sétima década de vida, 65,2% eram mulheres e recebiam até dois salários mínimos (91,4%, 87,5% tinham casas próprias, com deficiente esgotamento sanitário (84,1% e baixo grau de escolaridade (97,1%. Sessenta e seis referiram sofrer maus-tratos. Desses, 65,2% eram do sexo feminino. O tipo de violência mais comum foi a psicológica (62,1%, seguida da física (31,8%, cometidas pelos próprios familiares dentro do próprio domicílio. As mulheres foram mais agredidas que os homens. 71,3% reagiram passivamente não sabendo a que órgão denunciar. No seu entendimento a comunidade era indiferente ao problema. CONCLUSÕES: os maus-tratos contra idosos apresentam-se como problema relevante para a saúde pública. Medidas educativas poderiam ser implementadas para esclarecê-los sobre direitos, facilitar a denúncia e a obtenção de apoio ou ajuda.OBJECTIVES: to describe the situation of abuse against the elderly in the municipality of Camaragibe, in the metropolitan region of Recife, Pernambuco. METHODS: cross sectional study with a representative sample of the elderly population in the municipality, subject to abuse and respondents to a previously designed questionnaire according to the objectives of the study. RESULTS: of the 315 elderly, 95.4% were in the sixth and seventh decade of life and 65.2% were women and received up to two minimum wages (91.4%, were house owners (87.5%, living in neighborhoods with deficient sewage systems (84.1% and low education level (97.1%. Seventy six claimed they were abused. Among these 65.2% were females. The most common type

  8. Presencia de anticuerpos sericos contra Neospora caninum en equinos en Chile Sera antibodies to Neospora caninum in Chilean horses

    Directory of Open Access Journals (Sweden)

    A.N. Patitucci

    2004-12-01

    Full Text Available Neospora sp. es un parásito protozoario causante de abortos y/o enfermedad del Sistema Nervioso Central (SNC en caninos, bovinos, ciervos, caprinos, ovinos, equinos y otros. En equinos, se lo ha involucrado como causa de aborto, mortalidad neonatal y enfermedades del SNC y viscerales. La especie que infecta a los equinos es distinta a Neospora caninum y se denomina Neospora hughesi. En Chile no existe evidencia de infección en equinos, sin embargo, la enfermedad ha sido informada en bovinos y caninos, por lo que el objetivo de este trabajo fue buscar anticuerpos contra la enfermedad en sueros equinos . Para ello se tomaron muestras de sangre a 145 equinos (87 de la IX Región y 58 de la VIII Región de Chile. Los sueros fueron analizados mediante Test de Aglutinación para Neospora (NAT. Cada suero se diluyó en 1:40 en solución salina tamponada (PBS pH 7.2 conteniendo 2- mercaptoetanol y fueron analizados en 1:40 y 1:80. Los sueros positivos a 1:80 fueron examinados a 1:160 y 1:320. Anticuerpos contra N.caninum (≥ 1:40 se encontraron en 32% (47/145 de los equinos estudiados. Debido a que N.caninum y N.hughesi dan reacción cruzada, ambos o uno de ellos podrían ser los responsables de la seropositividad. Estos resultados indican que equinos provenientes de la VIII y IX regiones de Chile son reaccionantes a la infección de Neospora, por lo que su diagnóstico presuntivo debería ser considerados ante la presencia de cuadros clínicos con sintomatología nerviosa y/o abortos en esta especie.Neospora caninum is a protozoan parasite that affects cattle and dogs, its infections seem to be widely prevalent in Chile. To date, nothing is known of the presence of N. caninum in horse population of the country. In South America, two seroprevalence studies have failed to find antibodies in Argentina and Brazil. The objective of the study was to investigate the presence of N. caninum exposure in horses of Chile. Sera from 145 asymptomatic horses (87

  9. Partidos Políticos como antídoto contra el populismo en América Latina

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    Patricio Navia

    2003-01-01

    Full Text Available Definiendo populismo como un esfuerzo por debilitar las instituciones, en este artículo planteo que los partidos políticos pueden ser un antídoto contra el populismo. Mientras más fuertes y más accountable ante la población sean los partidos, menores serán las posibilidades que aparezcan nuevos líderes populistas en América Latina. En este trabajo defino partido político como grupo de políticos que siguen asociados en la misma organización después de perder una elección. De esta forma prescindo de variables ideológicas para definirlos. Además, esta definición me permite diferenciar partidos políticos de movimientos populistas temporales que se organizan electoralmente como partidos. La estabilidad del sistema político está determinada por la existencia de partidos políticos. Analizando casos históricos y recientes de Latinoamérica y ofreciendo datos electorales que validan estas afirmaciones, sugiero que los países donde existen formaciones partidarias estables y fuertes tienen menos riesgos de experimentar fenómenos populistas. También sugiero que las experiencias populistas en dichos países sólo aparecen asociadas al debilitamiento de los partidos políticos. Así, la existencia de verdaderos partidos políticos es una condición necesaria, no suficiente, para evitar la irrupción del populismo

  10. Uma revisão sobre instrumentos de rastreamento de violência doméstica contra o idoso

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    Carlos Montes Paixão Jr.

    2006-06-01

    Full Text Available Os dados sobre violência contra o idoso são escassos no Brasil. Para estudos adequados sobre a magnitude, fatores de risco e cuidados às vítimas, é necessária documentação sistemática e acurada. Este artigo revisou os instrumentos de rastreamento e avaliação de violência no idoso visando examinar o progresso no contexto internacional e brasileiro. Utilizando as bases de dados MEDLINE, PsycINFO, LILACS, CANE, OVIDs citations e livros de referência, realizou-se uma revisão sistemática da literatura para a seleção dos instrumentos. Fez-se, também, um escrutínio dos estudos de psicometria e utilização dos instrumentos, aplicando-se critérios para avaliar a qualidade dos estudos. Dos dezessete instrumentos encontrados, somente a Conflicts Tactics Scale foi adaptada para o Brasil, ainda que para uso em um grupo etário mais jovem. Alguns outros com boas características psicométricas também foram encontrados, como o Caregiver Abuse Screen, Elder Abuse Assessment Tool, Hwalek Sengstok Abuse Screening Test, Indicators of Abuse Screen, Qualcare scale e Vulnerability to Abuse Screening Scale. Ainda assim, de forma geral, há lacunas importantes nos processos de concepção, validação e adaptação desses instrumentos no Brasil e no exterior.

  11. Factores asociados a una respuesta inadecuada a la vacunación contra la hepatitis B en personal sanitario

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    Tolosa Martínez Natividad

    1998-01-01

    Full Text Available FUNDAMENTO: La vacuna recombinante contra la hepatitis B confiere inmunidad aproximadamente en el 95 % de los casos, pero existe un porcentaje que responde insuficientemente. El objetivo de este trabajo es evaluar los factores que se asocian con una inadecuada respuesta inmunitaria. MÉTODOS: Se trata de un estudio observacional y analítico en el que se sigue retrospectivamente una cohorte de sujetos vacunados frente al virus de la hepatitis B (VHB. Se recogieron las variables de interés del personal sanitario que cumplía los criterios de inclusión, del Área de Salud 9 de la Comunidad Valenciana (n=827. Tras la vacunación se determinó la titulación de anticuerpos de superficie (antiHBs para comprobar la respuesta, considerándose niveles protectores los superiores a 10 mUI/ml. RESULTADOS: Se produjo una adecuada seroconversión en el 94,4% de los vacunados. La baja o nula respuesta a la vacuna se asoció significativamente y de forma independiente con variables como el sexo masculino, la edad, el índice de masa corporal (IMC y el tabaquismo. El consumo de alcohol y los niveles de GPT, aunque no se relacionaron de forma significativa con la respuesta a la vacuna, actuaron como posibles factores de confusión. CONCLUSIONES: La inmunogenicidad de la vacuna es satisfactoria. Es importante cuantificar los niveles de antiHBs, sobretodo cuando hay factores predictivos de mala respuesta. De esta manera, es posible identificar a aquellos que precisan dosis de recuerdo y a los no respondedores, evitándose así situaciones de falsa sensación de protección frente al VHB.

  12. Mobilidade e ativismo: novas estratégias na luta contra o Estado hegemônico

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    Tarcisio Torres Silva

    2011-05-01

    Full Text Available O uso de dispositivos móveis tem sido uma das principais ferramentas nas ações ativistas que envolvem protestos e outros tipos de mobilização social pelo mundo. Seu uso ficou evidente com a freqüente exposição de imagens de manifestantes usando celulares para se comunicarem durante as ações que derrubaram chefes de Estado na Tunísia e no Egito no início do ano de 2011. Em outros locais onde há intenso controle do Estado sobre o acesso da população à informação, como em Cuba, esta tecnologia funciona como um apoio às práticas de resistência e também como uma alternativa ao acesso à informação. Em ambos os casos, a mobilidade proporciona a renovação de estratégias de ataque desde sempre usadas em ações subversivas contra o Estado. Adicionam-se a ela a velocidade, a expansão geográfica das ações e a capacidade de persuasão das causas apresentadas por meio de estratégias diversas. A inteligência com que os dispositivos móveis vem sendo usados mostra uma nova condição que desafia o controle do Estado, muitas vezes ainda estruturado sob a ótica do poder centralizado. 

  13. Desempenho e hematologia de tilápias-do-nilo alimentadas com Saccharomyces cerevisiae e vacinadas contra Streptococcus agalactiae

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    Rogério Salvador

    2013-08-01

    Full Text Available O objetivo deste trabalho foi avaliar a inter-relação entre a suplementação alimentar com parede celular de Saccharomyces cerevisae e a vacinação contra Streptococcus agalactiae e seu efeito sobre o desempenho produtivo e as variáveis hematológicas de tilápia-do-nilo (Oreochromis niloticus. Oitenta e quatro tilápias-do-nilo foram distribuídas em 12 caixas de fibra (n=7, em arranjo fatorial 2x2x3, correspondente a dois níveis de suplementação com parede celular de levedura, dois tipos de inoculação e três tempos de avaliação. Os peixes foram alimentados durante 77 dias. A vacinação dos peixes foi realizada 60 dias após o início da alimentação. Quinze dias após a vacinação, todos os peixes foram submetidos ao desafio com cepa viva de S. agalactiae, e 6, 24 e 48 horas após o desafio, o sangue foi colhido da veia caudal para avaliações. Peixes alimentados com ração suplementada apresentam maior ganho de peso e taxa de crescimento específico, e a interação entre os efeitos da dieta e da vacinação resulta em maiores taxas de hematócrito, hemoglobina e leucócitos.

  14. CRESCIMENTO DO MARACUJAZEIRO AMARELO SOB ESTRESSE SALINO E BIOFERTILIZAÇÃO EM AMBIENTE PROTEGIDO CONTRA PERDAS HÍDRICAS

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    José Lucínio de Oliveira Freire

    2012-09-01

    Full Text Available O objetivo do trabalho foi avaliar a influência do biofertilizante bovino e cobertura morta vegetal no crescimento vegetativo do maracujazeiro amarelo irrigado com água não salina e salina em ambiente protegido contra perdas hídricas. O experimento foi conduzido no período de outubro de 2008 a abril de 2009, no município de Remígio, Paraíba. O delineamento estatístico foi em blocos casualizados, em esquema fatorial 2x2x2, referente à água não salina (0,5 dS m-1 e salina (4,5 dS m-1, sem e com biofertilizante bovino, sem e com cobertura morta, com três repetições e três plantas por parcela. Avaliaram-se o período para poda do broto apical, taxa de crescimento absoluto em altura, comprimento de internódio, número de ramos produtivos e diâmetro do caule das plantas. O aumento do nível de salinidade da água, independentemente da adição do biofertilizante, inibiu o crescimento das plantas. O período do transplantio à poda do broto apical das plantas irrigadas com água salina e o uso do biofertilizante foi antecipado em 8,16 dias. O maior crescimento em altura do maracujazeiro amarelo ocorreu no solo com biofertilizante e cobertura morta.

  15. Selección de cepas de Shigella sonnei para el desarrollo de una vacuna efectiva contra la shigellosis

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    Olga M. Martínez

    2008-12-01

    Full Text Available En el Instituto Finlay se desarrolló una metodología de trabajo que contribuyó a la selección de cepas de Shigella sonnei como posibles candidatos vacunales contra la shigellosis. Las cepas investigadas, donadas por el Centro Provincial de Higiene y Epidemiología de Ciudad de La Habana, se caracterizaron según los métodos convencionales. La identificación del serogrupo y serotipo se realizó por aglutinación en láminas portaobjetos con antisueros comerciales; mientras que para el estudio de la susceptibilidad antimicrobiana se utilizó el DIRAMIC 10, un equipo semiautomatizado que proporcionó los resultados 4 horas después de su realización. Se investigó también la presencia de plásmidos de virulencia, por el crecimiento de Shigella spp. en medio de agar Triptona Soya con Rojo Congo al 0,025%, así como la expresión de las proteínas de la membrana externa en SDS-PAGE; para las pruebas de virulencia y potencia se emplearon los modelos animales (modelo ratón-pulmón y Test de Sereny. Los resultados obtenidos con la metodología utilizada permitieron la selección de la cepa de S. sonnei A-04 como la más adecuada para la obtención del posible candidato vacunal.

  16. PRODUCCIÓN Y EVALUACIÓN SEROLÓGICA DE UNA BACTERINA CONTRA LA LEPTOSPIROSIS BOVINA

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    Edna Sánchez C

    2007-12-01

    Full Text Available Objetivo. Producir una bacterina contra leptospirosis bovina. Materiales y métodos. La producción de la bacterina se realizó a partir de cultivos de L. pomona, L. grippotyphosa, L. hardjobovis, L. hardjoprajitno, L. icterohaemorrhagiae y L. canicola con concentraciones entre 1x108 y 1x1010 células/ml. Las leptospiras se inactivaron con formol y se adsorbieron en hidróxido de aluminio para formular la vacuna. La concentración final de cada serovar fue de 1x108 Leptospiras/ml. Para realizar la evaluación serológica del producto biológico, se inmunizó una población de 20 ternerossanos los cuales fueron sangrados antes y después de la vacunación para realizar titulaciones de los sueros por medio de la técnica de microaglutinación y de esta forma determinar la producción de anticuerpos generada a causa de la bacterina. Resultados. El serovar que mayor título de anticuerpos produjo fue L. icterohaemorrhagiae, seguido por L. canicola. La serología realizada 15 días despuésde la revacunación fueron los que presentaron mayor número de anticuerpos para todos los serovares, excepto para L. grippotyphosa que fue el único que no estimuló la producción de anticuerpos en los animales vacunados. Conclusiones. La bacterina fue capaz de inducir una respuesta inmune humoral en los bovinos, sin embargo, la cepa L. grippotyphosa no fue inmunógena comparada con los demás serovares quehicieron parte de la vacuna

  17. Evaluación del antagonismo de Trichoderma sp. y Bacillus subtilis contra tres patógenos del ajo

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    Karina Astorga-Quirós

    2014-05-01

    Full Text Available La producción y calidad del cultivo del ajo criollo (Allium sativum se ven limitadas por diversas enfermedades de origen fungoso y bacterial, que llevan al productor a aplicar estrategias de control químico y en algunos casos abandonar la actividad por un incremento en las pérdidas. El control biológico es una estrategia útil para combatir este tipo de microorganismos. El objetivo de esta investigación consistió en evaluar el antagonismo in vitro de Trichoderma sp. y Bacillus subtilis contra tres de los principales patógenos del ajo: Sclerotium cepivorum, Penicillium sp. y Pseudomonas marginalis. Las especies mencionadas se aislaron e identificaron con pruebas bioquímicas y claves taxonómicas respectivamente y se determinó su actividad antagónica y efecto inhibitorio utilizando el crecimiento en platos duales. La cepa de B. subtilis mostró un potencial con valores bajos de PICR: 14,087 ante S. cepivorum y 3,328 ante Penicillium sp., por lo que se clasifica como un mal biocontrolador. Por su parte, Trichoderma presentó un potencial muy alto, con valores de PICR de 40,210 frente a S. cepivorum y de 45,034 ante Penicillium sp., lo que indica que es un muy buen controlador. Los resultados apoyan el potencial de las cepas de Trichoderma sp. como agentes de control biológico frente a la pudrición causada por Penicillium del ajo, la bacteriosis por P. marginalis y la pudrición blanca por S. cepivorum. No así Bacillus subtilis, pues la cepa aislada demostró poco potencial como biocontrolador.

  18. Violencia contra las mujeres: el papel del sector salud en la legislación internacional Violence against women: the role of the health sector in international legislation

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    Gaby Ortiz-Barreda

    2012-10-01

    Full Text Available Objetivos: Identificar y describir las responsabilidades que se atribuyen a las administraciones sanitarias en materia de prevención y atención de la violencia contra las mujeres en la legislación internacional sobre este tema. Métodos: Análisis de contenido de las leyes de violencia contra las mujeres recopiladas en The Annual Review of Law of Harvard University, UN Secretary-General's database on Violence against Women, International Digest of Health Legislation y Stop Violence against Women. Se identificaron y seleccionaron las leyes que hacían mención explícita a la participación del sector salud en intervenciones de violencia contra las mujeres. Se clasificaron las intervenciones según los niveles de prevención primaria, secundaria y terciaria definidos por la Organización Mundial de la Salud en su Informe Mundial sobre Violencia y Salud (2002. Resultados: De 115 países analizados, 55 disponen de leyes sobre la violencia contra las mujeres que contemplan la participación del sector salud en sus intervenciones. En la mayoría, esta participación se centra en la denuncia de casos detectados y la atención de casos derivados de servicios policiales. Se identificaron 24 leyes que hacían mención a intervenciones específicamente desarrolladas por el sector salud, sobre todo de prevención terciaria. Las leyes de México, Colombia, Argentina, El Salvador, España y Filipinas integran intervenciones relacionadas con los tres niveles de prevención. Conclusiones: Una cuarta parte de las leyes sobre la violencia contra las mujeres estudiadas incorporan intervenciones específicas del sector salud. Esto sugiere que todavía es incipiente el abordaje integral del problema. Se requiere un mayor aprovechamiento de las potencialidades de este sector en intervenciones previas a las consecuencias de la violencia contra las mujeres.Objectives: To identify and describe the responsibilities attributed to health administrations in preventing

  19. The tfdR gene product can successfully take over the role of the insertion element-inactivated TfdT protein as a transcriptional activator of the tfdCDEF gene cluster, which encodes chlorocatechol degradation in Ralstonia eutropha JMP134(pJP4)

    OpenAIRE

    Leveau, J H; van der Meer, J.R.

    1996-01-01

    The tfdT gene is located upstream of and transcribed divergently from the tfdCDEF chlorocatechol-degradative operon on plasmid pJP4 of Ralstonia eutropha (formerly Alcaligenes eutrophus) JMP134. It is 684 bp long and encodes a 25-kDa protein. On the basis of its predicted amino acid sequence, the TfdT protein could be classified as a LysR-type transcriptional regulator. It has the highest degree of similarity with the proteins TcbR, ClcR, and TfdR, which are involved in the regulation of chlo...

  20. Desarrollo de biomodelos para la evaluación de la inmunidad secretora contra M. tuberculosis en ratones Balb/c

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    Annette León

    2000-09-01

    Full Text Available Poco se ha estudiado acerca del papel de los anticuerpos específicos, presentes en las secreciones del aparato respiratorio, en la defensa contra patógenos intracelulares, como es el caso de las micobacterias causantes de la tuberculosis en el hombre: Micobacterium tuberculosis, bovis y africanum. Con el objetivo de desarrollar modelos adecuados para evaluar el posible papel de la inmunidad secretoria en la defensa contra la tuberculosis, se desarrollaron dos modelos animales con la utilización de un anticuerpo monoclonal IgA dirigido contra la proteína de 16 kD de M. tuberculosis y M. bovis. En el primer modelo se inocularon ratones Balb/c, por vía subcutánea al nivel de la nuca, con diferentes cantidades de células del hibridoma TBA61, productor de la IgA específica. En un segundo modelo, se inoculó por vía intraperitoneal líquido ascítico correspondiente a este hibridoma obtenido en ratón. En ambos casos se determinó, a diferentes tiempos, la concentración del monoclonal en saliva y sólo en suero para el segundo. En los dos modelos se demostró el paso del monoclonal a la saliva, donde alcanzó la máxima concentración: a los 21 días en los animales inoculados con el hibridoma, y a las 2 horas en saliva y suero en los animales inoculados con el líquido ascítico. Se sugiere, por su sencillez y mayor inocuidad, el uso del segundo modelo para la realización de estudios de reto por vía mucosal.

  1. Obtención de anticuerpos monoclonales de ratón contra proteasa de cisteína 5 recombinante de Entamoeba histolytica

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    Juanita Trejos S.

    2012-08-01

    Full Text Available Objetivo. Obtener anticuerpos monoclonales de ratón contra la proteasas de cisteína 5 (EhCP5 de Entamoeba histolytica. Materiales y métodos. Se inmunizaron ratones BALB/c por vía intraperitoneal con adyuvante de Freund completo e incompleto con la proteína recombinante EhCP5 obtenida a partir del cultivo de E.coli DH5α trasfectada con el vector recombinante pJC45 que expresa dicha proteína. Se seleccionó el animal con mejor respuesta de anticuerpos. Al cual se le extrajo su bazo como fuente de linfocitos B, los cuales se fusionaron utilizando PEG con células de mieloma de ratón SP2-0/Ag14. Se procedió a selección de los hibridomas y a la evaluación de los sobrenadantes de las colonias que crecieron a los 7 días mediante ELISA. Los hibridomas con valores más altos de anticuerpos específicos contra la proteína EhCP5r se seleccionaron, y los clones obtenidos por diluciones limitantes fueron expandidos. Resultados. A partir de un clon secretor estable se purifico el anticuerpo monoclonal anti EhCP5r del isotipo IgG1 por cromatografía de afinidad con proteína G. Los clones fueron expandidos in vivo e in vitro. Con el anticuerpo purificado se diseñaron tres sistemas de captura para evaluar la aplicabilidad del anticuerpo monoclonal anti EhCP5r como método inmunodiagnóstico. Conclusiones. Se logro la producción de un anticuerpo monoclonal específico contra EhCP5r que permite diferenciar Entamoeba histolytica de Entamoeba dispar.

  2. The Cracow’s pious laymen or Beghard heretics? From the study on the 14th century Tractatus contra beghardos by Henryk Harrer

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    Tomasz Gałuszka

    2012-12-01

    Full Text Available Tractatus contra beghardos written by a Chech Dominican Henryk Harrer is a masterpiece of exceptional value for both historians of the medieval heterodox movements as well as for scholars interested in the history of theology and law in the 14th century. The treaty was commissioned by Cracow Dominicans in the years 1328 to 1334. Commissioning the treaty to Henryk Harrer, a stranger expert from the Prague monastery of St. Clemens was dictated by a series of controversies among Cracow clergy around the judgement of conduct of a certain group of people whose religious practices and a way of life stood out from the rest of the congregation. Undertaking the task of writing the treaty Henryk Harrer based his work around three charges pressed against the suspected of heresy: breaking off the Church and establishing an illegal organization (singularitas vite; corrupted attitude towards recognized religious practices (contemptibilitas sacramenti eucharistiae; numerous flaws and perverse disposition (pertinax voluntas. Not only did Harrer decide to comment on all aspects of life of central figures of Contra beghardos but he also honestly mentioned all arguments he was not able to undermine. Despite these objective difficulties, the Czech Dominican was certain that the expertise he came up with was sufficient to link the lay movement with the sect of Beghard Heretics. The author of this study proved that, contrary to Harrer’s keen intention, his Tractatus contra beghardos does not unambiguously show heresy in the Cracow diocese. What is more, the reader, instead of indictment against the conduct of a group of laymen paradoxically received a confirmation of their innocence and orthodoxy. In the light of analysis of the text Contra beghardos, the claim that Beghard Heretics from Harrer’s work turn out to be pious layman, living in communion with the Church, seems to be fully substantiated. Of course their way of life and the practice of asceticism made

  3. Conflictos normativos y decisiones contra legem: una explicación de la derrotabilidad normativa a partir de la distinción entre reglas y principios

    OpenAIRE

    Bustamante, Thomas

    2010-01-01

    El presente trabajo constituye un esfuerzo de explicación del fenómeno de la derrotabilidad de las normas jurídicas y de las diferentes formas de interacción entre reglas y principios jurídicos. Tras la adopción de la clasificación de las normas jurídicas propuesta por R. Alexy se espera construir un modelo para explicar la estructura de las decisiones contra legem. The present paper is an effort to explain both the phenomenon of the defeasibility of legal norms and the different forms of ...

  4. El discurso de los políticos españoles sobre las respuestas a la violencia contra las mujeres

    OpenAIRE

    Carmen Vives-Cases; Daniel La Parra Casado

    2006-01-01

    Objetivo: El estudio analiza el discurso de algunos miembros del Parlamento español en los 2 años previos a la aprobación de la Ley de Protección Integral contra la violencia de género para explorar cómo la violencia de género es percibida durante el proceso de institucionalización de medidas legales. Métodos: Fueron entrevistados 10 miembros de 6 partidos políticos con representación en el Parlamento español entre noviembre de 2002 y marzo de 2003. Cada entrevista fue gr...

  5. Riesgo de aparición del efecto boomerang en las comunicaciones contra la violencia The Risk of Emergence of Boomerang Effect in Communication against Violence

    OpenAIRE

    José Antonio Ruiz San Román; Gaspar Brändle Señán; Miguel Ángel Martín Cárdaba

    2011-01-01

    Los comportamientos violentos causan inquietud entre los responsables públicos (políticos, educadores, asistentes sociales, asociaciones de madres y padres, etc.) que, desde diversos ámbitos, toman medidas que tratan de dar solución al problema de la violencia. La difusión de campañas institucionales de comunicación en contra de la violencia y el fomento de la publicación de noticias relacionadas con sucesos violentos suelen ser algunas de las acciones utilizadas. No obstante, parte de los da...

  6. Plan de negocios para la creación de una empresa comercializadora de un sistema automático contra incendios para vehículos

    OpenAIRE

    García Monroy, Miguel Ángel

    2013-01-01

    El trabajo formula el plan de negocios para crear una empresa ubicada en Bogotá, que vende, instala y realiza el mantenimiento de un sistema automático contra incendios para vehículos; esto con el fin de mejorar los sistemas de seguridad y protección de los autos, para así combatir la problemática real y alarmante de incendios vehiculares, que traen como consecuencia la pérdida de vidas humanas, materiales o monetarias y daños medioambientales irreparables

  7. ¿Cómo darle visibilidad a la violencia contra las mujeres en Chile? Contribución de las Agencias de las Naciones Unidas

    OpenAIRE

    Jáuregui Mejía, María Luisa

    2005-01-01

    En este artículo se presenta el trabajo que está siendo realizado por la Mesa Temática de Género, que es un grupo de Expertas en Género de cinco Agencias de las Naciones Unidas con sede en Chile, que trabajan de forma unida dando apoyo al Servicio Nacional de la Mujer en Chile (SERNAM), para encarar el tema de la violencia contra las mujeres en Chile. El trabajo se concentra prioritariamente en tres áreas: prevención de la violencia, tratamiento de las víctimas y denuncia de...

  8. España y la cruzada médica contra la masturbación (1800-1900). Elementos para una genealogía

    OpenAIRE

    Vázquez García, Francisco; Seoane Cegarra, José Benito

    2004-01-01

    En este trabajo, se trata de explicar la patologización del onanismo en la España del siglo XIX. Con este objetivo se adopta la perspectiva de los estudios sobre la gubernamentalidad liberal. La cruzada médica contra la masturbación se emplaza en la encrucijada de dos trayectorias. En primer lugar, la constitución de la familia burguesa,escindida de la esfera laboral. En segundo lugar, la formación de un tipo de sujeto adaptado a ese nuevo espacio doméstico. En la pugna por monopolizar este p...

  9. Manifestações bucais compatíveis com doença do enxerto contra o hospedeiro em pacientes com anemia de Fanconi

    OpenAIRE

    Cavalcanti, Laura Grein

    2014-01-01

    Resumo: A anemia de Fanconi é uma doença genética rara caracterizada por anomalias congênitas, falência medular progressiva e maior susceptibilidade ao desenvolvimento de neoplasias malignas. O único tratamento com perspectiva de cura hematológica é o transplante de células-tronco hematopoiéticas (TCTH). Uma das complicações relacionadas a este procedimento é o desenvolvimento da doença do enxerto contra o hospedeiro crônica (DECHc), a qual pode desencadear dor, impedimento funcional e reduçã...

  10. Recomendación sobre la vacuna contra la tosferina para los preadolescentes y adolescentes (Whooping Cough Vaccine Recommendation for Preteens and Teens)

    Centers for Disease Control (CDC) Podcasts

    2015-04-13

    Este podcast proporciona información acerca de la tosferina y la recomendación de que todos los preadolescentes reciban la vacuna Tdap a los 11 o 12 años para ayudar a protegerlos contra esta grave enfermedad.  Created: 4/13/2015 by National Center for Immunization and Respiratory Diseases (NCIRD), Division of Bacterial Diseases (DBD), Meningitis and Vaccine Preventable Diseases Branch (MVPDB).   Date Released: 4/13/2015.

  11. Violencia laboral intramuros. Hostigamiento sexual y otras formas de violencia contra la mujer en las maquiladoras de Sonora y Baja California

    OpenAIRE

    Mireya Scarone Adarga

    2014-01-01

    El objetivo del presente artículo es identificar los comportamientos en torno al hostigamiento sexual y otras formas de violencia contra la mujer en el ámbito laboral de la maquiladora en los estados de Sonora y Baja California. Para analizar dichas conductas se requirió de herramientas de la metodología cualitativa, como las entrevistas semiestructuradas y grupos focales, que se les hicieron durante 2012 a 31 trabajadoras de maquiladoras de las entidades mencionadas. En los relatos se identi...

  12. Proyecto básico del grupo hidráulico principal de un remolcador polivalente de salvamento y lucha contra la contaminación

    OpenAIRE

    Piñero Cebrián, Pedro

    2014-01-01

    Este proyecto se desarrolla con el propósito de calcular y dimensionar la central hidráulica principal de un remolcador de salvamento y lucha contra la contaminación marina de 80 m. de eslora y 1500 toneladas de peso muerto que se supone definido en tamaño según la especificación del buque determinada. Se dispone del plano real de disposición general del buque objeto del proyecto, que nos permitirá encuadrar los distintos elementos que configurarán la central hidráulica proyectada. Los datos ...

  13. Isabel de Valois como esperanza de paz contra la herejía. Motivos del epitalamio en la "oratio cristiana" (1560) de Pedro del Frago

    OpenAIRE

    Serrano Cueto, Antonio

    2008-01-01

    El artículo presenta un poema latino de Pedro del Frago, concebido como una oratio cristiana, para celebrar la llegada de Isabel de Valois a España (1560). Dicho poema sirve de pretexto para unos largos escolios en los que el autor hace apología del Concilio de Trento y de la pugna católica contra la herejía. Frago ha introducido además en el poema motivos propios del epitalamio, con la posible influencia del humanista Diego de Guevara.

  14. Política exterior argentina : La relación bilateral con los Estados Unidos en el marco de la Guerra contra el Terrorismo

    OpenAIRE

    Frechero, Jorge Ignacio

    2006-01-01

    El presente trabajo se centra en el estudio de la relación bilateral con los Estados Unidos tras el 11/S, con el objeto de presentar, en primer lugar, un balance de la política exterior argentina vis-á-vis la administración Bush y, en segundo, una evaluación del impacto real de la guerra contra el terrorismo sobre la dinámica política y económica del país sudamericano. (Párrafo extraído del texto a modo de resumen)

  15. Caracterização química e atividade antibacteriana de óleos essenciais de plantas condimentares e medicinais contra Staphylococcus aureus e Escherichia coli

    OpenAIRE

    Millezi, A. F.; N.N. Baptista; D.S. Caixeta; D.F. Rossoni; M.G Cardoso; R.H. Piccoli

    2014-01-01

    Os óleos essenciais são metabólitos secundários dos vegetais com propriedades biológicas diferenciadas, dentre elas, a atividade contra microrganismos, sendo de interesse da indústria de alimentos as concentrações mínimas inibitórias (CMI) desses óleos para diversas bactérias. As CMI variam em função dos compostos majoritários e da espécie de bactéria. Nesta pesquisa, os óleos essenciais das plantas Satureja montana L., Cymbopogon nardus L. e Citrus limonia Osbeck foram caracterizados quimica...

  16. Antibacterial activity of four mouthrinses containing triclosan against salivary Staphylococcus aureus Atividade antibacteriana de quatro anti-sépticos bucais contendo triclosan contra Staphylococcus aureus da saliva

    OpenAIRE

    Juliane Maria Guerreiro Tanomaru; Andresa Piacezzi Nascimento; Evandro Watanabe; Fumio Matoba-Júnior; Mário Tanomaru-Filho; Izabel Yoko Ito

    2008-01-01

    The maximum inhibitory dilution (MID) of triclosan-based mouthwashes against 28 Staphylococcus aureus strains was evaluated. Dilutions ranging from 1/10 to 1/655,360 were prepared. Strains were inoculated using a Steers multipoint inoculator. The MID was considered as the maximum dilution capable of inhibiting microorganism growth. The mouthwashes presented different MIDs.A Diluição Inibitória Máxima (DIM) de anti-sépticos bucais à base de triclosan contra 28 cepas de Staphylococcus aureus fo...

  17. La guerra contra el narcotráfico en México. Debilidad del estado, orden social y fracaso de una estrategia

    OpenAIRE

    César Morales Oyarvide

    2011-01-01

    En 2006, tras una cuestionada elección, Felipe Calderón toma posesión como presidente de México y lanza una ofensiva sin precedentes contra los grupos traficantes de droga en el país latinoamericano, centrada en el uso del ejército. A 4 años y más de 30 mil muertes, el clima de inseguridad y violencia permanente permanece. El artículo estudia su historia, desmonta sus justificaciones y analiza sus múltiples consecuencias negativas. Detrás de la situación actual y el fracaso de la estrategia p...

  18. Desarrollo y evaluación de un prototipo de formulación a base de una mezcla de levaduras contra Botrytis cinerea en rosas

    OpenAIRE

    Rivera Arévalo, Hugo Enrique

    2014-01-01

    Las levaduras poseen mecanismos de acción contra B. cinerea: competencia por espacio y nutrientes, producción de metabolitos secundarios inhibitorios, producción de compuestos orgánicos volátiles, entre otros. Sin embargo, las levaduras requieren ser formuladas para su estabilización y actividad bio-controladora en función del tiempo. Las formulaciones han usado mono-inóculos de antagonistas como principio activo, no obstante, sus mezclas también han sido empleadas, pero relegadas a un segund...

  19. Detección de anticuerpos contra Borrelia burgdorferi e identificación de garrapatas ixodidas en Piura Y Amazonas, Perú

    OpenAIRE

    Martha Glenny A; Leonardo Mendoza U; Eduardo Falconí R

    2004-01-01

    Objetivos: Detectar anticuerpos IgG/IgM contra Borrelia burgdorferi en población general, procedentes de los departamentos de Piura y Amazonas e identificar especies de garrapatas probablemente incriminadas en la transmisión de la enfermedad de Lyme. Material y Métodos: Entre agosto del año 2001 y junio de 2002, se colectaron muestras de sangre de 232 pobladores procedentes de ocho localidades del Departamento de Piura y 12 del Departamento de Amazonas, para evaluar mediante ELISA Captia™ Lym...

  20. Persistencia de la eficacia de dos lactonas macrocíclicas contra infestaciones naturales de Rhipicephalus (Boophilus) microplus en bovinos del trópico mexicano

    OpenAIRE

    Ronnie de Jesús Arieta-Román; Roger Iván Rodríguez-Vivas; José Alberto Rosado- Aguilara; Genny Trinidad Ramírez-Cruz; Gertrudis Basto-Estrella

    2010-01-01

    Se evaluó la persistencia de la eficacia de ivermectina-3.15% (IVM-3.15%) y moxidectina-10% (MOX-10%) contra infestaciones naturales de Rhipicephalus (Boophilus) microplus en bovinos del trópico mexicano. Para ello se utilizaron 33 bovinos hembras que fueron distribuidos en tres grupos (n=11) recibiendo los siguientes tratamientos: a) IVM-3.15% (0.63 mg/kg de peso vivo por vía subcutánea; b) MOX-10% (1 mg/kg de peso vivo por vía subcutánea); c) grupo testigo. El número de garrapatas adultas f...