Free Content Helicobacter pylori infection influences nocturnal gastric acid breakthrough

Authors: Katsube, T.1; Adachi, K.1; Kawamura, A.1; Amano, K.1; Uchida, Y.1; Watanabe, M.1; Kinoshita, Y.1

Source: Alimentary Pharmacology & Therapeutics, Volume 14, Number 8, August 2000 , pp. 1049-1056(8)

Publisher: Blackwell Publishing

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Abstract:

Background: 

Nocturnal gastric acid breakthrough is defined as night-time periods when gastrin pH falls below 4.0 for greater than 1h during administration of a proton pump inhibitor. This phenomenon is a serious problem for patients who require strict control of their gastric acid secretions. Aim: 

To investigate the prevalence of nocturnal gastric acid breakthrough in Japanese subjects during administration of rabeprazole, and to clarify the relationship between Helicobacter pylori infection and nocturnal gastric acid breakthrough. Methods: 

Thirty-one normal male volunteers were examined by ambulatory 24 h gastric pH monitoring four times: without medication, after a morning or an evening dose of 20 mg rabeprazole, and after administration of an H2-receptor antagonist at bedtime, in addition to the morning dose of rabeprazole. H. pylori infection was determined by the 13C-urea breath test and an assay for serum anti-H. pylori antibody. Result: 

Nocturnal gastric acid breakthrough was observed in 12 patients (39%) after the morning dose of 20 mg rabeprazole. In all cases, nocturnal gastric acid breakthrough was inhibited completely by administration of the H2-receptor antagonist at bedtime. Only one patient with nocturnal gastric acid breakthrough had H. pylori infection. Conclusion: 

The absence of H. pylori infection appears to be closely related to the occurrence of nocturnal gastric acid breakthrough during dosing with a proton pump inhibitor.

Document Type: Research article

DOI: 10.1046/j.1365-2036.2000.00799.x

Affiliations: 1: Department of Internal Medicine II, Shimane Medical University, Izumo, Japan

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