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Is autonomic dysfunction a necessary condition for chronic peptic ulcer formation?
M Nomura1, M Yukinaka, H Miyajima
1Second Department of Internal Medicine, School of Medicine, University of Tokushima, Japan. nomura@clin.med.tokushima-u.ac.jp
Alimentary Pharmacology & Therapeutics
|May 12, 2000
Summary
Autonomic nervous dysfunction, indicated by heart rate variability, is linked to chronic peptic ulcers. Helicobacter pylori infection was not found to be a significant factor in this study.
Area of Science:
- Cardiology
- Gastroenterology
- Autonomic Nervous System Function
Background:
- Investigated the link between 1/f fluctuation in heart rate variability and Helicobacter pylori infection.
- Aimed to determine if autonomic nervous dysfunction is essential for chronic peptic ulcer development.
Purpose of the Study:
- To evaluate the role of autonomic nervous system dysfunction in the pathogenesis of chronic peptic ulcers.
- To assess the relationship between heart rate variability patterns and peptic ulcer disease.
Main Methods:
- Analyzed 24-hour Holter ECG recordings from 11 chronic peptic ulcer patients and 20 healthy controls.
- Calculated the 1/f(-x) fluctuation of heart rate, a novel index of autonomic function.
- Determined the slope of the regression line (-x) and performed cosine fitting on the absolute slope over 24 hours.
Main Results:
- Patients with peptic ulcers exhibited significantly higher absolute slope values during both daytime and nighttime compared to controls (P<0.05).
- The mean cosine curve value was significantly higher in the peptic ulcer group (1.12 +/- 0.25) than in the normal group (0.76 +/- 0.23).
- No significant difference in Helicobacter pylori infection rates was observed between the two groups.
Conclusions:
- Autonomic nervous dysfunction is suggested as a necessary condition for the formation of chronic peptic ulcers.
- While Helicobacter pylori infection is a known factor, this study highlights the critical role of autonomic dysfunction.