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  • Title: [Decrease of basal levels of gastrin following H. pylori eradication].
    Author: Gisbert JP, Boixeda D, Vila T, de Rafael L, Alvarez Baleriola I, Moreira V, Martín de Argila C, Arocena C, García Plaza A.
    Journal: Rev Esp Enferm Dig; 1995 Feb; 87(2):99-107. PubMed ID: 7748715.
    Abstract:
    UNLABELLED: Hypergastrinemia has long been considered an important factor in the pathophysiology of duodenal ulcer. Moreover, H. pylori infection has been reported in virtually all duodenal ulcers. AIM: To demonstrate the influence of H. pylori eradication on the basal levels of serum gastrin in patients with duodenal ulcer. METHODS: Seventy-six patients with endoscopically proved duodenal ulcer were prospectively studied. At endoscopy three biopsy samples each were taken from duodenal bulb, gastric antrum, corpus and fundus. Two samples from every location were submitted for conventional histological examination and the other for microbiological examination (Gram staining and culture). Endoscopy was repeated one month after the end of therapy, when endoscopy samples were again obtained from the gastric antrum and corpus. Basal levels of gastrin were measured both at initial and repeat endoscopies. Different therapeutic regimes were used: Amoxycillin/Clavulanate plus omeprazole or ranitidine, and triple therapy. RESULTS: H. pylori eradication was associated with a significant histological improvement (p < 0.001), both in antrum and corpus. In those patients with eradicated H. pylori the differences in basal gastrin levels both at diagnosis and after therapy were 45.4 +/- 11 pg/ml and 36.7 +/- 10 pg/ml, respectively; these differences were statistically significant (p < 0.001). When eradication was not achieved differences were not significant. The area under the ROC curve constructed from the different cutoff points for the gastrin decreases was 0.68 (EE 0.06). CONCLUSION: H. pylori eradication in patients with duodenal ulcer was associated with a significant decrease in basal levels of serum gastrin. Although the verification of such a decrease doesn't have an optimal relationship between sensitivity and specificity, it could be an aid as a useful non-invasive method to monitor the efficiency of therapy, both in H. pylori eradication and in the resolution of the associated gastritis. This procedure is also associated with early results and a low cost.
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