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Genetic determination of irritable bowel syndrome





World J Gastroenterol. 2008 Nov 21;14(43):6636-40.


Genetic determination of irritable bowel syndrome.


Hotoleanu C, Popp R, Trifa AP, Nedelcu L, Dumitrascu DL. 2nd Medical Department, University of Medicine and Pharmacy Iuliu Hatiegau, Str Clinicilor 4, Cluj-Napoca 400 006, Romania. This email address is being protected from spambots. You need JavaScript enabled to view it..



Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder. According to the Rome III criteria, IBS is defined as recurrent abdominal pain or discomfort for at least 3 d per month during the previous 3 mo associated with two or more of the following symptoms: improvement with defecation, onset associated with a change in the frequency of stool and/or onset associated with a change in form or appearance of stool. There is growing evidence regarding the genetic contribution in IBS, however the precise etiology of IBS is still unknown. The evaluation of the genetic influence is based on twin studies, familial aggregation and genetic epidemiological investigations. Most studies showed a concordance for IBS significantly greater in monozygotic than in dizygotic twins. The majority of the studies have shown that familial aggregation may represent exposures to a similar environment, as well as the influence of genetic factors. Whereas no specific gene has been identified in association with IBS, recent studies have noticed the importance of polymorphisms in the promoter region of the serotonin reuptake transporter gene, G-protein beta 3 subunit gene (C825T), cholecystokinin receptor (CCKAR gene 779T>C), and high-producer tumor necrosis factor genotype. Further studies are necessary to determine how genetic factors influence the clinical manifestations and therapeutical response in IBS patients.


PMID: 19034965 [PubMed - in process]









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