PMID- 1434125 OWN - NLM STAT- MEDLINE DCOM- 19921210 LR - 20190725 IS - 0021-5198 (Print) IS - 0021-5198 (Linking) VI - 59 IP - 3 DP - 1992 Jul TI - Preventive actions of N-(3-aminopropionyl)-L-histidinato zinc (Z-103) through increases in the activities of oxygen-derived free radical scavenging enzymes in the gastric mucosa on ethanol-induced gastric mucosal damage in rats. PG - 267-74 AB - Z-103 at 1 to 25 mg/kg, p.o. prevented 100% ethanol-induced gastric mucosal lesions in a dose-dependent manner. Z-103 at 3 to 25 mg/kg, p.o. significantly elevated gastric mucosal superoxide dismutase (SOD)-like activity 1 hr after its administration to normal rats. In addition, Z-103 at doses (10 and 25 mg/kg, p.o.) which prevented 100% ethanol-induced gastric lesion further increased gastric mucosal SOD-like and glutathione peroxidase (GSH-px) activities elevated by 60% ethanol. Z-103 (10 and 25 mg/kg) significantly inhibited the increase in thiobarbituric acid-reactive substances in gastric mucosa injured by 60% ethanol. The combination with cycloheximide, a protein synthesis inhibitor, completely abolished the prevention of 60% ethanol-induced gastric mucosal lesions and the elevation of both free radical scavenging enzyme activities in the mucosa by Z-103 (10 mg/kg, p.o.). These results suggest that Z-103 may partly protect rat gastric mucosa against ethanol-induced damage by scavenging oxygen-derived free radicals via increases in the synthesis of SOD-like and GSH-px enzymes in the mucosa. FAU - Ito, M AU - Ito M AD - Department of Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan. FAU - Shii, D AU - Shii D FAU - Segami, T AU - Segami T FAU - Kojima, R AU - Kojima R FAU - Suzuki, Y AU - Suzuki Y LA - eng PT - Journal Article PL - Japan TA - Jpn J Pharmacol JT - Japanese journal of pharmacology JID - 2983305R RN - 0 (Anti-Ulcer Agents) RN - 0 (Dipeptides) RN - 0 (Free Radical Scavengers) RN - 0 (Organometallic Compounds) RN - 0 (Zinc Compounds) RN - 0WA1B15A1Z (polaprezinc) RN - 3K9958V90M (Ethanol) RN - 8HO6PVN24W (Carnosine) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - J41CSQ7QDS (Zinc) SB - IM MH - Administration, Oral MH - Animals MH - Anti-Ulcer Agents/administration & dosage/*pharmacology MH - *Carnosine/*analogs & derivatives MH - Dipeptides/administration & dosage/*pharmacology MH - Dose-Response Relationship, Drug MH - Ethanol/toxicity MH - *Free Radical Scavengers MH - Gastric Mucosa/drug effects/*enzymology MH - Glutathione Peroxidase/*metabolism MH - Male MH - Organometallic Compounds/administration & dosage/*pharmacology MH - Rats MH - Rats, Inbred Strains MH - Superoxide Dismutase/*metabolism MH - Zinc/administration & dosage/*pharmacology MH - Zinc Compounds EDAT- 1992/07/01 00:00 MHDA- 1992/07/01 00:01 CRDT- 1992/07/01 00:00 PHST- 1992/07/01 00:00 [pubmed] PHST- 1992/07/01 00:01 [medline] PHST- 1992/07/01 00:00 [entrez] AID - 10.1254/jjp.59.267 [doi] PST - ppublish SO - Jpn J Pharmacol. 1992 Jul;59(3):267-74. doi: 10.1254/jjp.59.267.