Kees, Frieder and Holstege, A. and Ittner, K. P. and Zimmermann, M. and Lock, G. and Schoelmerich, Juergen and Grobecker, H. (2000) Pharmacokinetic interaction between proton pump inhibitors and roxithromycin in volunteers. ALIMENTARY PHARMACOLOGY & THERAPEUTICS, 14 (4). pp. 407-412. ISSN 0269-2813
Full text not available from this repository. (Request a copy)Abstract
Background: Triple therapy including two antibiotics and a proton pump inhibitor is a rational approach to the treatment of Helicobacter pylori induced peptic ulcer disease. The interaction of antimicrobial therapy and acid suppression is not yet well elucidated. Aims: To investigate the effects of proton pump inhibitors on roxithromycin levels in plasma and gastric tissue under steady-state conditions in volunteers. Methods: In two crossover studies omeprazole 20 mg b.d., lansoprazole 30 mg b.d., roxithromycin 300 mg b.d., and the combination of roxithromycin with either omeprazole or lansoprazole were administered to 12 healthy volunteers over 6 days. Blood plasma levels of the drugs were measured. In addition, roxithromycin concentrations were also determined in gastric juice and gastric tissue obtained during endoscopy. Results: The proton pump inhibitors and roxithromycin did not alter the blood plasma pharmacokinetics of each other. When compared to roxithromycin administered alone, its combination with a proton pump inhibitor significantly increased the roxithromycin concentrations in gastric juice (3.0-5.0 mu g/mL vs. 0.3-0.4 mu g/mL) and gastric tissue (antrum: 3.8-4.0 vs. 2.8 mu g/g, fundus: 5.9-7.4 vs. 4.2-4.4 mu g/g). Conclusions: Proton pump inhibitors and roxithromycin do not alter the systemic bioavailability of each other. However, proton pump inhibitors increase the local concentration of roxithromycin in the stomach which may contribute to the clinically proven synergic beneficial action in eradication therapy of H. pylori.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PERFORMANCE LIQUID-CHROMATOGRAPHY; HELICOBACTER-PYLORI INFECTION; GASTRIC-JUICE; CLARITHROMYCIN; OMEPRAZOLE; METRONIDAZOLE; AMOXICILLIN; PLASMA; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine 600 Technology > 615 Pharmacy |
| Divisions: | Medicine > Lehrstuhl für Innere Medizin I Chemistry and Pharmacy > Institute of Pharmacy > Pharmacology and Toxicology (Prof. Schlossmann, formerly Prof. Seifert) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 May 2022 09:42 |
| Last Modified: | 16 May 2022 09:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42593 |
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