Academic literature on the topic 'Anticorps anti-Saccharomyces cerevisiae'
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Journal articles on the topic "Anticorps anti-Saccharomyces cerevisiae"
Maillet, Jérémy, Sébastien Ottaviani, Florence Tubach, Carine Roy, Pascale Nicaise-Rolland, Elisabeth Palazzo, and Philippe Dieudé. "Anticorps anti- Saccharomyces cerevisiae (ASCA) dans la spondyloarthrite : prévalence et phénotype associé." Revue du Rhumatisme 84, no. 5 (October 2017): 407–11. http://dx.doi.org/10.1016/j.rhum.2017.05.011.
Full textBourreille, A., M. Doubremelle, and J. F. Colombel. "Anticorps anticytoplasmes des polynucléaires neutrophiles et anticorps anti-Saccharomyces cerevisiae : de nouveaux outils biologiques pour le diagnostic des maladies inflammatoires chroniques intestinales." La Revue de Médecine Interne 24, no. 3 (March 2003): 147–50. http://dx.doi.org/10.1016/s0248-8663(02)00014-0.
Full textHickman, G., E. Pape, E. Delaporte, F. Aubin, B. Sendid, F. Tubach, N. Guigue, et al. "Étude prospective de prévalence des anticorps sériques anti Saccharomyces cerevisiae (ASCA) chez 71 patients atteints d’hidradénite suppurée (HS)." Annales de Dermatologie et de Vénéréologie 139, no. 12 (December 2012): B79—B80. http://dx.doi.org/10.1016/j.annder.2012.10.068.
Full textGottlieb, J., G. Hickman, N. Guigue, E. Pape, S. Lebbah, E. Delaporte, B. Sendid, F. Aubin, F. Tubach, and H. Bachelez. "Les anticorps Anti – Saccharomyces cerevisiae sont un biomarqueur de l’hidrosadénite suppurée modérée à sévère mais pas du psoriasis en plaque sévère." Annales de Dermatologie et de Vénéréologie 144, no. 12 (December 2017): S98. http://dx.doi.org/10.1016/j.annder.2017.09.109.
Full textAlmeida, Diego Seixas Gomes de, and Adriana Rodrigues Ferraz. "Diagnóstico tardio de Doença de Crohn Fibroestenosante-Fistulizante: relato de caso." Revista Eletrônica Acervo Saúde 23, no. 3 (March 27, 2023): e12519. http://dx.doi.org/10.25248/reas.e12519.2023.
Full textDissertations / Theses on the topic "Anticorps anti-Saccharomyces cerevisiae"
Cornu, Marjorie. "Mycobiome et maladies inflammatoires chroniques de l'intestin : Impact de la dysbiose sur l'inflammation intestinale et le processus fibrotique." Electronic Thesis or Diss., Université de Lille (2022-....), 2024. https://pepite-depot.univ-lille.fr/ToutIDP/EDBSL/2024/2024ULILS010.pdf.
Full textIntroduction. While the mycobiota represents a seemingly negligible quantitative proportion of the intestinal microbiota, evidence of its role in chronic inflammatory bowel diseases, and in particular in Crohn's disease (CD), is growing. This work aimed to evaluate the impact of Candida albicans and Saccharomyces cerevisiae on inflammation and intestinal fibrosis (IF), but also on the production of anti-S. cerevisiae antibodies (ASCA), recognizing oligomannosidic sequences of low degree of polymerization having a terminal α, 1-3 mannose residue.Methods. Murine (C57BL/6, axenic and CEABAC10 expressing human CEACAM6) and cellular (CCD-18Co fibroblast and Caco-2 intestinal epithelial cell) models of induced inflammation and IF (by DSS or TGF-β) were used to evaluate cellular, tissue and systemic responses to yeasts and bacterial strain LF82, invasive adherent strain of E. coli (AIEC) used as control, by histological analysis, RT-q-PCR and determination of ASCA. Alongside, a metagenomic (MTG) analysis of the fecal mycobiota and the determination of ASCA and fecal calprotectin were carried out as part of a case-control study, “MAGIC”. This study included subjects with recently diagnosed CD and in clinical remission in comparison to their healthy first-degree relatives, as well as to matched healthy controls. This study was carried out in collaboration with other research teams, analyzing in particular the bacterial fecal microbiota and carrying out the characterization of AIEC strains.Results. In the mouse model of chemo-induced IF, LF82 worsened inflammation and IF, clinically, microscopically and at the level of gene expression (GE). C. albicans increased the GE especially of markers of inflammation. S. cerevisiae had no effect. In vitro, only epithelial cells responded to TGF-β and/or LF82 and the GE of pro-fibrotic markers was increased, while yeast had no effect on IF. Furthermore, yeasts did not induce the synthesis of ASCA in the different mouse models studied. In the MAGIC clinical study, 41.7% of CD patients carried ASCA, 2.9% of healthy relatives and 1.8% of healthy controls and no difference was observed according to age. Bacterial MTG analysis showed a specific profile in healthy relatives (higher richness and AIEC) vs. controls and MC patients, particularly linked to the presence of symbionts bacteria, but also the higher presence of AIEC vs. controls; patients with CD had lower diversity vs. healthy controls and relatives, as well as the presence of higher AIEC vs. controls. However, the fecal mycobiota was similar between the different groups, whether in relative abundance (notably for C. albicans and S. cerevisiae), or in alpha- beta-diversity. No association between micromycetes and the different parameters evaluated (calprotectin, ASCA, AIEC) was found.Conclusion. These results suggest, within the limits of the models used, that the studied yeasts do not have an impact on IF, unlike LF82, and do not seem responsible for the synthesis of ASCA. The autoantibody hypothesis remains to be further explored. Fecal fungal MTG analysis of the individuals included in the MAGIC study suggests that the changes observed in other studies are a consequence of CD. Indeed, the absence of a specific fungal profile could be explained by the fact that the included subjects suffering from CD had a recent diagnosis and therefore had a little modified fungal profile at this stage of the disease. However, the quality of these data warrants that these results be confirmed in a large cohort of patients with CD followed sequentially at the beginning and throughout the course of the disease
Rodrigues, Igor Kunze. "Relação entre anticorpos anti-Saccharomyces cerevisiae (ASCA) e anti-Helicobacter pylori em pacientes com espondiloartrite axial." reponame:Repositório Institucional da UFSC, 2013. https://repositorio.ufsc.br/xmlui/handle/123456789/123139.
Full textMade available in DSpace on 2014-08-06T17:51:42Z (GMT). No. of bitstreams: 1 321925.pdf: 1092630 bytes, checksum: 8805069bff1afe4f3aff308ac32ae643 (MD5) Previous issue date: 2013
Introdução: Espondiloartrites (SpA) são doenças musculoesqueléticasinflamatórias crônicas, possivelmente associadas à resposta do sistemaimune à microbiota intestinal, bem como a ulcerações intestinaissubclínicas. Helicobacter pylori (H. pylori) é uma causa comum deulcerações gastroduodenais. Anticorpos anti-Saccharomyces cerevisiae(ASCA) estão associados à inflamação intestinal em pacientes comdoença de Crohn (DC) e em SpA. Pesquisou-se a relação entre anti-H.pylori e ASCA (frequência de sorologia positiva e titulação) empacientes com SpA axial, comparando-a em DC. Materiais e Métodos:Estudo observacional transversal de 91 pacientes com SpA axial, emacompanhamento no HU-UFSC, no período de janeiro a novembro de2012. Quarenta pacientes com DC foram incluídos como grupo controle.Títulos de ASCA IgG/IgA e anti-Helicobacter pylori IgG foramavaliados utilizando-se ensaio imunoenzimático (ELISA). O teste doQui-quadrado foi empregado para comparar a proporção de casos ASCApositivo entre subgrupos anti-H. pylori positivo e anti-H. pylorinegativo. Para correlacionar os títulos de anti-H. pylori e ASCA foirealizado o coeficiente de Spearman. Resultados: Ocorreu umacorrelação negativa significativa entre os títulos de ASCA IgG e anti-H.pylori IgG (? = -0,563, p < 0,001) e entre ASCA IgA e anti-H. pyloriIgG (? = -0,342, p = 0,019) nos pacientes com SpA axial. O mesmopadrão de correlação negativa foi observado nos pacientes com DC.Sorologia anti-H. pylori positiva foi significativamente mais frequenteem SpA axial que em pacientes com DC (52,4% versus 18,4%, p <0,001), enquanto ASCA foi menos frequente em SpA axial que DC(26,8% contra 59,5%, p = 0,001, para ASCA IgG e 4,9% versus 43,2%,p < 0,001 para ASCA IgA). Conclusão: Observou-se uma correlaçãonegativa entre anti-H. pylori e ASCA nos pacientes com SpA axial eDC. Sorologia anti-H. pylori positiva foi mais frequente em SpA axialque em DC. Já as sorologias ASCA foram mais frequentes em DC queem SpA axial. Propõe-se que H. pylori possa ser um agente ambientalcapaz de reduzir a gravidade da inflamação intestinal em pacientes comSpA, porém esta hipótese requer investigação adicional.
Abstract : Background: Spondyloarthritis (SpA) are musculoskeletalinflammatory diseases possibly linked to immune responses to intestinalmicrobiota and subclinical intestinal ulcerations. Helicobacter pylori (H.pylori) is a common cause of gastroduodenal ulcerations. Anti-Saccharomyces cerevisiae antibodies (ASCA) are associated withintestinal inflammation in Crohn?s disease (CD) and SpA. We researchthe relationship between anti-H. pylori and ASCA to determine theirfrequencies and titers in axial SpA and compare them with CD patients.Material and Methods: Cross-sectional study of 91patients with axialSpA at a University Hospital in Florianópolis, Brazil, from January toNovember 2012. 40 patients with CD were included for comparativepurposes. ASCA IgG and IgA and anti-H. pylori IgG titers wereassessed by ELISA. Chi-square test was used to compare the proportionof positive ASCA patients between the positive anti-H. pylori IgG andnegative anti-H. pylori IgG groups. Anti-H.pylori IgG and ASCA titerswere correlated using the Spearman coefficient. Results: We noticed asignificant negative correlation between ASCA IgG and anti-H. pyloriIgG titers (? = -0.563, p < 0.001) and between ASCA IgA and anti-H.pylori IgG titers (? = -0.342, p = 0.019) in axial SpA patients. The samepattern of negative correlation was observed in CD patients. Anti-H.pylori positive serology was significantly more frequent in axial SpAthan in CD patients (52.4% versus 18.4%, p < 0.001), while ASCA wasless frequent in axial SpA than in CD group (ASCA IgG: 26.8% versus59.5%, p = 0.001; ASCA IgA: 4.9% versus 43.2%, p < 0.001).Conclusions: A negative correlation between anti-H. pylori and ASCAwas observed in axial SpA and CD. Anti-H. pylori positive serology wasmore frequent in axial SpA than in CD patients. ASCA positiveserologies were more frequent in CD than in axial SpA patients. Wepropose that H. pylori negatively modulate the severity of intestinalinflammation in SpA. This hypothesis requires further investigation.
Schappo, Fernando. "Pesquisa de anticorpos contra estruturas citoplasmáticas do neutrófilo (ANCA) e contra o Saccharomyces cerevisiae (ASCA) na doença inflamatória intestinal." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/5/5147/tde-02082007-081654/.
Full textThe determination of serologic markers P-ANCA (perinuclear antineutrophil cytoplasmic autoantibodies) and ASCA (anti-Saccharomyces cerevisiae mannan antibodies) assists as non-invasive way on the inflammatory bowel disease (IBD) diagnosis. The most associated pattern to ulcerative colitis (UC) occurs with ASCA- (negative) and P-ANCA + (positive). In the Crohns disease (CD) is the opposite, that is, ASCA+ and P-ANCA-. Determination of P-ANCA is performed by an indirect immunofluorescence assay, using ethanol-fixed neutrophil slides and ASCA is measured by ELISA. Usually, the prevalence of P-ANCA in patients with UC has varied between 50 and 80% and in patients with CD between 10 and 30%. Healthy controls have disclosed lesser prevalence than 4% and pathological controls around 8%. Some studies had shown a wide variation in the results, suggesting both genetic and methodologic variations, according to the studied population. Serum samples were obtained from 200 patients for analysis of P-ANCA and ASCA, being 98 with UC and 102 with CD. The control group was represented by 54 healthy individuals. Patients with IBD were selected from the Department of Gastroenterology - Intestine Group of the Hospital das Clínicas of the University of São Paulo (HCFMUSP). P-ANCA prevalence found in UC, CD and control group were 61,2%, 16,7% e 5,6%, respectively, but ASCA prevalence in UC, CD and control group were 52,9%, 27,6% e 5,6%, respectively. Sensitivity and specificity achieved using ASCA+/P-ANCA- pattern for CD were 45,1% e 89,%, respectively, but P-ANCA+/ASCA- pattern for UC were 43,9% e 91,2% respectively. In this study, the current data did not support a relationship between the serological markers and clinical and demographic characteristics, except when evaluated the use of immunosuppresive drugs and infliximab in patients with CD and ASCA+, which were increased (p=0,008). Thus, the determination of antibodies P-ANCA and ASCA in the IBD gets low sensitivity, but high levels of especificity as demonstrated in other published reports. The correlation of antibodies P-ANCA and ASCA with clinical characteristics appears to be limited.
Book chapters on the topic "Anticorps anti-Saccharomyces cerevisiae"
Furlan, Renata Ligia de Araújo. "PLATAFORMAS MICROBIANAS PARA PRODUÇÃO DE BIOFÁRMACOS." In Biotecnologia Microbiana - Volume 1, 11–24. Editora Científica Digital, 2023. http://dx.doi.org/10.37885/230111831.
Full textConference papers on the topic "Anticorps anti-Saccharomyces cerevisiae"
Monteiro da Silva, Yasmin, Cleslei Fernando Zanelli, Tatiana Maria de Souza Moreira, and Sandro Roberto Valentini. "Expressão e secreção de fragmento variável de cadeia única de anticorpo anti-RBD de SARS-CoV-2 em Saccharomyces cerevisiae." In XI Congresso Farmacêutico e VII Jornada de Engenharia de Bioprocessos e Biotecnologia. Rio Grande do Sul: Softaliza Tecnologias LTDA, 2023. http://dx.doi.org/10.55592/jfunesp.2023.4013838.
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