期刊
ALIMENTARY PHARMACOLOGY & THERAPEUTICS
卷 28, 期 2, 页码 187-199出版社
WILEY
DOI: 10.1111/j.1365-2036.2008.03725.x
关键词
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资金
- NIDDK NIH HHS [R01 DK058333, R01 DK053642] Funding Source: Medline
Background AGN 201904-Z is a new, slowly absorbed, acid-stable pro-proton pump inhibitor (pro-PPI) rapidly converted to omeprazole in the systemic circulation giving a prolonged residence time. Aim To investigate pharmacodynamics and pharmacokinetics of AGN 201904-Z compared to esomeprazole. Methods A randomized, open-label, parallel group, investigator-blinded intragastric pH study was conducted in 24 healthy Helicobacter pylori negative male volunteers. AGN 201904-Z enteric-coated capsules (600 mg/day) or esomeprazole delayed-release tablets (40 mg/day) were administered for 5 days. Twenty-four-hour intragastric pH recordings were acquired at baseline, days 1, 3 and 5 with blood levels of omeprazole, AGN 201904-Z and gastrin. Results On day 1, median nocturnal pH and proportion of nocturnal time with pH >= 4 and 24-h and nocturnal time pH >= 5 were significantly higher with AGN 201904-Z than esomeprazole. At day 5, 24-h and median nocturnal pH were significantly higher for AGN 201904-Z than esomeprazole (P < 0.0001). There was also a marked reduction in periods of nocturnal pH < 4.0. Area under curve of the AGN 201904-Z active metabolite (omeprazole) in the blood was twice that of esomeprazole at day 5. Conclusions AGN 201904-Z produced a significantly greater and more prolonged acid suppression than esomeprazole, and nocturnal acid suppression was more prolonged over all 5 days. AGN 201904-Z should provide true once-a-day treatment and better clinical efficacy than current PPIs.
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