Ghrelin Gene Polymorphisms in Irritable Bowel Syndrome

Area of Science:

• Gastroenterology
• Genetics
• Molecular Biology

Background:

• Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder characterized by altered bowel habits and abdominal pain.
• Pathogenesis of IBS is complex, with disordered bowel motility being a key factor.
• Ghrelin, a hormone influencing gastrointestinal motility, has genetic polymorphisms that may impact IBS risk.

Purpose of the Study:

• To investigate the association between specific ghrelin gene polymorphisms and the risk of developing IBS.
• To determine if ghrelin polymorphisms correlate with different IBS subtypes.

Main Methods:

• Genotyping of IBS patients (n=142) and controls (n=209) for ghrelin polymorphisms rs34911341, rs696217, and rs2075356 using PCR and RFLP.
• Analysis of genotype and allele frequencies in relation to IBS status and subtypes.

Main Results:

• The rs696217 GG genotype was more frequent in IBS patients compared to controls.
• The rs696217 GT genotype and T allele were significantly less frequent in IBS patients, suggesting a protective effect.
• No significant associations were found for rs34911341 and rs2075356 polymorphisms with IBS risk.
• No significant differences in genotype frequencies were observed between IBS subtypes.

Conclusions:

• Ghrelin gene polymorphisms, particularly rs696217, are associated with IBS susceptibility.
• The G allele of rs696217 appears to increase IBS risk, while the T allele may be protective.
• Ghrelin polymorphisms are likely involved in IBS pathogenesis but do not predict specific IBS subtypes.