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Myo9B is associated with an increased risk of Barrett's esophagus and esophageal adenocarcinoma.
MedLine Citation:
PMID:  22954106     Owner:  NLM     Status:  Publisher    
Abstract Background. Reflux esophagitis (RE) and Barrett's esophagus (BE) are predisposing factors for development of esophageal adenocarcinoma (EAC), the solid tumor with the fastest rising incidence in the Western world. This RE-BE-EAC cascade involves multiple host factors and consequently multiple genes. Polymorphisms in the 3' region of myosin IXB (Myo9B) are associated with chronic inflammatory gastrointestinal disorders like celiac disease and ulcerative colitis, assuming that variation in Myo9B influences the intestinal permeability. Aim. To determine esophageal expression and the genetic variation of the Myo9B gene in the RE-BE-EAC cascade. Methods. DNA from 886 Caucasian participants (198 non-reflux controls, 305 RE, 254 BE, 129 EAC) was collected for the determination of the Myo9B gene polymorphism (rs2305764). Esophageal Myo9B expression was determined on biopsies from normal, RE, BE and EAC epithelium. Results. Genotype G/G was more common in BE (p = 0.032) and EAC (p = 0.046), but not in RE (p = 0.126) compared with the control group. Cytoplasmic Myo9B expression was determined in RE, BE and EAC, but most prominent in epithelial cells of BE and EAC. Conclusions. Genetic variation of Myo9B may play a role in the etiology of BE and EAC by increasing the permeability of the epithelial barrier.
Vivianda Menke; Katinka P M Van Zoest; Leon M G Moons; Raymond G J Pot; Peter D Siersema; Ernst J Kuipers; Johannes G Kusters
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-7
Journal Detail:
Title:  Scandinavian journal of gastroenterology     Volume:  -     ISSN:  1502-7708     ISO Abbreviation:  Scand. J. Gastroenterol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0060105     Medline TA:  Scand J Gastroenterol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Gastroenterology and Hepatology, Erasmus MC - University Medical Center , Rotterdam , The Netherlands.
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