PMID- 16494850 OWN - NLM STAT- MEDLINE DCOM- 20060522 LR - 20181201 IS - 0006-2952 (Print) IS - 0006-2952 (Linking) VI - 71 IP - 9 DP - 2006 Apr 28 TI - Hydroxyl radical scavenging reactivity of proton pump inhibitors. PG - 1337-41 AB - In addition to the established control of acid secretion of the class of proton pump inhibitors (PPI) reactivity from the pyridyl methyl sulphinyl benzimidazole type a second independent anti-inflammatory reactivity was observed in vitro. This inhibitory reactivity was clearly noticed using three different assays where the aggressive hydroxyl radicals were successfully trapped in a concentration dependent manner. There is unequivocal evidence that the proton pump inhibitors having the sulphoxide group are able to scavenge hydroxyl radicals which are generated during a Fenton reaction. By way of contrast, the corresponding thioethers were substantially less active. No detectable effect was seen in the superoxide radical scavenging system. In conclusion, pantoprazole as well as the other proton pump inhibitors have a pronounced inhibitory reactivity towards hydroxyl radicals. FAU - Simon, Wolfgang Alexander AU - Simon WA AD - ALTANA Pharma AG, Byk Guldenstrasse 2, D 78464 Konstanz, Germany. simon@altanapharma.com FAU - Sturm, Ernst AU - Sturm E FAU - Hartmann, Hans-Jurgen AU - Hartmann HJ FAU - Weser, Ulrich AU - Weser U LA - eng PT - Journal Article DEP - 20060221 PL - England TA - Biochem Pharmacol JT - Biochemical pharmacology JID - 0101032 RN - 0 (2-Pyridinylmethylsulfinylbenzimidazoles) RN - 0 (Benzimidazoles) RN - 0 (Enzyme Inhibitors) RN - 0 (Free Radical Scavengers) RN - 0 (Iron Compounds) RN - 0 (Proton Pumps) RN - 0 (Sulfides) RN - 0 (Sulfoxides) RN - 0K5C5T2QPG (Lansoprazole) RN - 3352-57-6 (Hydroxyl Radical) RN - 42VZT0U6YR (Heme) RN - 533-67-5 (Deoxyribose) RN - 9004-61-9 (Hyaluronic Acid) RN - D8TST4O562 (Pantoprazole) RN - KG60484QX9 (Omeprazole) RN - LRX7AJ16DT (Copper Sulfate) SB - IM MH - 2-Pyridinylmethylsulfinylbenzimidazoles MH - Animals MH - Benzimidazoles/*chemistry MH - Cattle MH - Copper Sulfate/chemistry MH - Deoxyribose/chemistry MH - Enzyme Inhibitors/chemistry MH - Erythrocytes MH - Free Radical Scavengers/*chemistry MH - Heme/chemistry MH - Hyaluronic Acid/chemistry MH - Hydroxyl Radical/*chemistry MH - Iron Compounds/chemistry MH - Lansoprazole MH - Omeprazole/*analogs & derivatives/chemistry MH - Pantoprazole MH - Proton Pumps/*chemistry MH - Sulfides/chemistry MH - Sulfoxides/*chemistry EDAT- 2006/02/24 09:00 MHDA- 2006/05/23 09:00 CRDT- 2006/02/24 09:00 PHST- 2005/11/29 00:00 [received] PHST- 2006/01/16 00:00 [revised] PHST- 2006/01/17 00:00 [accepted] PHST- 2006/02/24 09:00 [pubmed] PHST- 2006/05/23 09:00 [medline] PHST- 2006/02/24 09:00 [entrez] AID - S0006-2952(06)00060-8 [pii] AID - 10.1016/j.bcp.2006.01.009 [doi] PST - ppublish SO - Biochem Pharmacol. 2006 Apr 28;71(9):1337-41. doi: 10.1016/j.bcp.2006.01.009. Epub 2006 Feb 21.