Amanzada, Ahmad

[["dc.bibliographiccitation.firstpage","227"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Digestion"],["dc.bibliographiccitation.lastpage","235"],["dc.bibliographiccitation.volume","102"],["dc.contributor.affiliation","Bremer, Sebastian C.B.; \r\n aClinic for Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Conradi, Lena-Christin; \r\n bClinic for General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Mechie, Nicolae-Catalin; \r\n aClinic for Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Amanzada, Ahmad; \r\n aClinic for Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Mavropoulou, Eirini; \r\n aClinic for Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Kitz, Julia; \r\n cInstitute of Pathology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Ghadimi, Michael; \r\n bClinic for General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Ellenrieder, Volker; \r\n aClinic for Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Ströbel, Philipp; \r\n cInstitute of Pathology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Hessmann, Elisabeth; \r\n aClinic for Gastroenterology and Gastrointestinal Oncology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Gaedcke, Jochen; \r\n bClinic for General, Visceral and Pediatric Surgery, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.affiliation","Bohnenberger, Hanibal; \r\n cInstitute of Pathology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany"],["dc.contributor.author","Bremer, Sebastian C. B."],["dc.contributor.author","Mechie, Nicolae-Catalin"],["dc.contributor.author","Mavropoulou, Eirini"],["dc.contributor.author","Ellenrieder, Volker"],["dc.contributor.author","Hessmann, Elisabeth"],["dc.contributor.author","Conradi, Lena-Christin"],["dc.contributor.author","Amanzada, Ahmad"],["dc.contributor.author","Kitz, Julia"],["dc.contributor.author","Ghadimi, Michael"],["dc.contributor.author","Ströbel, Philipp"],["dc.contributor.author","Gaedcke, Jochen"],["dc.contributor.author","Bohnenberger, Hanibal"],["dc.date.accessioned","2021-04-26T11:54:07Z"],["dc.date.available","2021-04-26T11:54:07Z"],["dc.date.issued","2021"],["dc.date.updated","2022-03-21T21:17:53Z"],["dc.description.abstract","Colorectal cancer (CRC) is the leading gastrointestinal malignancy. The development from premalignant intraepithelial lesions leading to invasive cancer is paradigmatic for the stepwise carcinogenesis of epithelial cancers, but the knowledge of the underlying mechanism of carcinogenesis and progression of CRC is still incomplete. The understanding of epigenetic mechanisms of carcinogenesis has led to new therapeutic approaches during the last years. Enhancer of zeste homolog 2 (EZH2) is one central epigenetic silencer of the polycomb repressor complex 2 (PRC2) that is already in clinical use as a novel drug target and is associated with poorer prognosis in several cancer entities."],["dc.identifier","31694013"],["dc.identifier.doi","10.1159/000504093"],["dc.identifier.pmid","31694013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/84358"],["dc.language.iso","en"],["dc.publisher","S. Karger AG"],["dc.relation.eissn","1421-9867"],["dc.relation.issn","0012-2823"],["dc.relation.issn","1421-9867"],["dc.rights.uri","https://www.karger.com/Services/SiteLicenses"],["dc.title","Enhancer of Zeste Homolog 2 in Colorectal Cancer Development and Progression"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e0233811"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Mavropoulou, Eirini"],["dc.contributor.author","Mechie, Nicolae-Catalin"],["dc.contributor.author","Knoop, Richard"],["dc.contributor.author","Petzold, Golo"],["dc.contributor.author","Ellenrieder, Volker"],["dc.contributor.author","Kunsch, Steffen"],["dc.contributor.author","Pilavakis, Yiannis"],["dc.contributor.author","Amanzada, Ahmad"],["dc.contributor.editor","Bonaz, Bruno"],["dc.date.accessioned","2021-04-14T08:25:13Z"],["dc.date.available","2021-04-14T08:25:13Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1371/journal.pone.0233811"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17632"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81557"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1932-6203"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Association of serum interleukin-6 and soluble interleukin-2-receptor levels with disease activity status in patients with inflammatory bowel disease: A prospective observational study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","761"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Digestion"],["dc.bibliographiccitation.lastpage","770"],["dc.bibliographiccitation.volume","101"],["dc.contributor.author","Mechie, Nicolae-Catalin"],["dc.contributor.author","Mavropoulou, Eirini"],["dc.contributor.author","Ellenrieder, Volker"],["dc.contributor.author","Kunsch, Steffen"],["dc.contributor.author","Cameron, Silke"],["dc.contributor.author","Amanzada, Ahmad"],["dc.date.accessioned","2021-04-14T08:31:24Z"],["dc.date.available","2021-04-14T08:31:24Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1159/000502515"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83581"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1421-9867"],["dc.relation.issn","0012-2823"],["dc.title","Distinct Association of Serum Vitamin D Concentration with Disease Activity and Trough Levels of Infliximab and Adalimumab during Inflammatory Bowel Disease Treatment"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e25111"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Medicine"],["dc.bibliographiccitation.volume","100"],["dc.contributor.author","Mechie, Nicolae-Catalin"],["dc.contributor.author","Burmester, Merle"],["dc.contributor.author","Mavropoulou, Eirini"],["dc.contributor.author","Pilavakis, Yiannis"],["dc.contributor.author","Kunsch, Steffen"],["dc.contributor.author","Ellenrieder, Volker"],["dc.contributor.author","Amanzada, Ahmad"],["dc.date.accessioned","2021-06-01T10:47:00Z"],["dc.date.available","2021-06-01T10:47:00Z"],["dc.date.issued","2021"],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.1097/MD.0000000000025111"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17849"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85446"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1536-5964"],["dc.relation.issn","0025-7974"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Evaluation of ustekinumab trough levels during induction and maintenance therapy with regard to disease activity status in difficult to treat Crohn disease patients"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e0223893"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Bathe, Anna Luisa"],["dc.contributor.author","Mavropoulou, Eirini"],["dc.contributor.author","Mechie, Nicolae-Catalin"],["dc.contributor.author","Petzold, Golo"],["dc.contributor.author","Ellenrieder, Volker"],["dc.contributor.author","Kunsch, Steffen"],["dc.contributor.author","Amanzada, Ahmad"],["dc.contributor.editor","Bonaz, Bruno"],["dc.date.accessioned","2020-12-10T18:42:11Z"],["dc.date.available","2020-12-10T18:42:11Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1371/journal.pone.0223893"],["dc.identifier.eissn","1932-6203"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16609"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77836"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Impact of faecal calprotectin measurement on clinical decision-making in patients with Crohn’s disease and ulcerative colitis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e000258"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","BMJ Open Gastroenterology"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Mavropoulou, Eirini"],["dc.contributor.author","Ternes, Kristin"],["dc.contributor.author","Mechie, Nicolae-Catalin"],["dc.contributor.author","Bremer, Sebastian Christopher Benjamin"],["dc.contributor.author","Kunsch, Steffen"],["dc.contributor.author","Ellenrieder, Volker"],["dc.contributor.author","Neesse, Albrecht"],["dc.contributor.author","Amanzada, Ahmad"],["dc.date.accessioned","2019-07-09T11:50:10Z"],["dc.date.available","2019-07-09T11:50:10Z"],["dc.date.issued","2019"],["dc.description.abstract","Background Concurrent cytomegalovirus (CMV) colitis in inflammatory bowel disease (IBD) and after haematopoietic stem cell transplantation (HSCT) is an important clinical entity associated with high rates of morbidity and mortality. Methods A retrospective study of 47 patients with IBD and 61 HSCT patients was performed regarding the evaluation of diagnostic accuracy of applied methods, predictors, risk factors for CMV disease manifestation, the proportion of patients with antiviral treatment and disease outcome. Results The sensitivity of quantitative PCR (qPCR) with a cut-off value of >250 copies/mg for CMV colitis in patients with IBD and HSCT patients was 79% and 92%, respectively. Predictors for CMV colitis in the IBD cohort were anaemia and the presence of endoscopic ulcers. Glucocorticoids, calcineurin inhibitors and >2 concurrent lines of treatment with immunosuppressive drugs could be identified as risk factors for CMV colitis in the IBD cohort with an OR of 7.1 (95% CI 1.7 to 29.9), 21.3 (95% CI 2.4 to 188.7) and 13.4 (95% CI 3.2 to 56.1), respectively. Predictors and risk factors for CMV gastroenteritis in the HSCT cohort was the presence of endoscopic ulcers (OR 18.6, 95% CI 3.3 to 103.7) and >2 concurrent lines of treatment with immunosuppressive drugs. Antiviral therapy was administered in 70% of patients with IBD and 77% of HSCT patients with CMV disease. 71% of antiviraltreated patients with IBD showed an improvement of their disease activity and 14% underwent colectomy. The mortality rate of HSCT patients was 21% irrespective of their CMV status. Conclusions In addition to the implementation of histological methods, qPCR may be performed in patients with suspected high-risk IBD and HSCT patients for CMV colitis. Independent validations of these results in further prospective studies are needed."],["dc.identifier.doi","10.1136/bmjgast-2018-000258"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15876"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59717"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY-NC-ND 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc-nd/4.0"],["dc.subject.ddc","610"],["dc.title","Cytomegalovirus colitis in inflammatory bowel disease and after haematopoietic stem cell transplantation: diagnostic accuracy, predictors, risk factors and disease outcome"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e15172"],["dc.bibliographiccitation.firstpage","e15172"],["dc.bibliographiccitation.issue","15"],["dc.bibliographiccitation.journal","Medicine"],["dc.bibliographiccitation.volume","98"],["dc.contributor.author","Mechie, Nicolae-Catalin"],["dc.contributor.author","Mavropoulou, Eirini"],["dc.contributor.author","Ellenrieder, Volker"],["dc.contributor.author","Petzold, Golo"],["dc.contributor.author","Kunsch, Steffen"],["dc.contributor.author","Neesse, Albrecht"],["dc.contributor.author","Amanzada, Ahmad"],["dc.date.accessioned","2020-12-10T18:20:07Z"],["dc.date.available","2020-12-10T18:20:07Z"],["dc.date.issued","2019"],["dc.description.abstract","The incidence of inflammatory bowel disease (IBD) is increasing and the pathogenesis is still not completely understood. Micronutrients like vitamin D [25 (OH)D] and zinc play an important role in enzyme activities and the immune system. As the 25 (OH)D-receptor has been shown to be downregulated in patients with IBD, 25 (OH)D may emerge as a predictive marker for disease improvement. Studies on relationship of both micronutrients in IBD patients are lacking.We retrospectively evaluated serum levels of 25(OH)D and zinc together with baseline characteristics of 232 IBD patients. Uni- and multivariate analyses were performed for association between serum levels of 25(OH)D and zinc with clinical and deep remission (CR and DR).155 Crohn's disease (CD) and 77 ulcerative colitis (UC) patients were included. 54% (n = 125) and 6% (n = 14) of IBD patients showed deficient serum 25(OH)D levels below 20 ng/mL and zinc levels below 7 μmol/L. Serum 25(OH)D levels were significantly higher in IBD patients with CR (P = .02) and DR (P < .001) but not serum zinc levels, respectively. Serum 25(OH)D levels (P = .008), anti-tumor-necrosis-factor-α-trough-concentration (anti-TNF-α-TC) (P = .02) and CRP level (P = .02) were independently associated with CR in CD patients. Serum 25(OH)D threshold of 19 ng/mL discriminated CD patients with or without CR, having an area under the receiver operating curve analysis (AUROC) of 0.77 [95%-confidence interval (CI): 0.68-0.85]. In multivariate analysis serum 25(OH)D levels (P = .04) and anti-TNF-α-TC (P = .04) were associated with DR in CD patients. Serum 25(OH)D threshold of 26 ng/mL discriminated CD patients with or without DR, having an AUROC of 0.75 (95%-CI: 0.68-0.83).Serum 25(OH)D (P = .04) and fecal calprotectin levels (P = .04) were independently correlated with CR in UC patients. Serum 25(OH)D threshold of 32 ng/mL discriminated UC patients in CR with an AUROC of 0.83 (95%-CI: 0.71-0.95). Zinc levels did not correlate with disease activity status in CD or UC patients either.In conclusion, beside CRP and fecal calprotectin, serum 25(OH)D levels, but not serum zinc levels, may be an additional useful and noninvasive marker for characterizing different disease activity status of IBD patients. Measurement of serum 25(OH)D in IBD patients may be warranted. 25(OH)D supplementation in deficient IBD patients is recommended."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2019"],["dc.identifier.doi","10.1097/MD.0000000000015172"],["dc.identifier.eissn","1536-5964"],["dc.identifier.issn","0025-7974"],["dc.identifier.pmid","30985701"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16069"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75459"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1536-5964"],["dc.relation.issn","0025-7974"],["dc.rights","CC BY-NC 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc/4.0"],["dc.title","Serum vitamin D but not zinc levels are associated with different disease activity status in patients with inflammatory bowel disease"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]