Gastric ghrelin in relation to gender, stomach topography and Helicobacterpylori in dyspeptic patients

• Published in: World journal of gastroenterology : WJG 2009 (43), p.5409-5417
• Main Author: Krystyna Stec-Michalska Sebastian Malicki Blazej Michalski Lukasz Peczek Maria Wisniewska-Jarosinska Barbara Nawrot
• Format: Article
• Language: English
• Subjects: ghrelin; 幽门螺杆菌; 消化不良; 生长素; 胃粘膜
• ISSN: 1007-9327; 2219-2840

AIM： To investigate the level of gastric ghrelin in stomach mucosa of dyspeptic patients in relation to Helicobacter pylor/（H pylori） infection, bacterial cytotoxicity, topography and gender.METHODS： The study comprised 40 premenopausal women （19 H pylori positive） and 48 men （17 H pylori positive） with functional dyspepsia. All gastric biopsy specimens revealed normal mucosa or non-atrophic gastritis. Gastric ghrelin concentration was determined by Enzyme linked immunosorbent assay. The cagA and vacA strains of bacterial DNA were identified by multiplex polymerase chain reaction.RESULTS： In general, infection with H pylori caused an increase in gastric ghrelin level regardless of gender and stomach topography. Significantly more hormone was present in both, non-infected and H pylori positive female samples, as compared to males. The distribution of bacterial strains showed cagA（＋） vacA slml and cagA（-） vacA s2m2 genotypes as the most common infections in the studied population. A tendency to higher ghrelin levels was observed in less cytotoxic （cagA negative） strain-containing specimens from the antrum and corpus of both gender groups （without statistical significance）. CONCLUSION： An increase in gastric ghrelin levels at the stage of non-atrophic gastritis in H pylori positive patients, especially in those infected with cagA（-） strains, can exert a gastroprotective effect.