IngentaConnect Association between gastric myoelectrical activity and intralumin...

Authors: Shiotani, A.¹; Iguchi, M.²; Inoue, I.²; Magari, H.²; Yanaoka, K.²; Tamai, H.²; Kitauchi, S.²; Ichinose, M.²

Source: Alimentary Pharmacology & Therapeutics, Volume 16, Supplement 2, April 2002 , pp. 44-51(8)

Publisher: Blackwell Publishing

Abstract:

Background:

We have previously shown that the intraluminal concentration of NO in H. pylori-positive patients is significantly reduced compared to that in H. pylori-negative patients. Aim:

The aim of this study was to evaluate the effect of H. pylori infection on gastric motor activity in relation to the level of NO and nitrite in the stomach in humans. Methods:

Thirty-two H. pylori-negative and 32 H. pylori-positive patients with dyspepsia were studied. Gastric myoelectrical activity was recorded for 24 h using surface electrogastrography. Intraluminal gas and juice were endoscopically collected from the stomach to determine NO and nitrite and nitrate (NOx) levels using a chemiluminescence system. Results:

The percentage of tachygastria in the morning preprandial state was significantly higher (P=0.005) in H. pylori-positive than -negative patients. In H. pylori-negative patients, there was a significant positive correlation between NO levels and the percentage of bradygastria (r=0.56, P=0.001) and a significant negative correlation between NOx levels and the percentage of normal electrical activity (r=− 0.57, P=0.001) in the preprandial state. Conclusions

Gastric motor activity is associated with NO and NOx levels in the gastric lumen. H. pylori infection may play a role in the pathogenesis of abnormal gastric myoelectrical activity.

Document Type: Research article

DOI: 10.1046/j.1365-2036.16.s2.15.x

Affiliations: 1: Health Administration Center, Wakayama Medical University, Japan, 2: Second Department of Internal Medicine, Wakayama Medical University, Japan

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Association between gastric myoelectrical activity and intraluminal nitric oxide