PMID- 20110680 OWN - NLM STAT- MEDLINE DCOM- 20100408 LR - 20190212 IS - 1421-9778 (Electronic) IS - 1015-8987 (Linking) VI - 25 IP - 2-3 DP - 2010 TI - Ethanol inhibits gastric acid secretion in rats through increased AMP-kinase activity. PG - 195-202 LID - 10.1159/000276553 [doi] AB - The effects of ethanol on gastric acid secretion remain controversial. The present study examines the effect of low-dose (2%) short term (15-20 min) ethanol exposure on gastric acid secretion via a potential interaction with AMP-activated protein kinase (AMPK). Real-time fluorescence digital imaging was used to provide functional evidence for the interaction of ethanol and AMPK in modulating secretagogue-induced acid secretion. Individual rat gastric glands were loaded with the pH-sensitive dye BCECF and the secretagogues carbachol (200 microM) or histamine (200 microM) were added to induce secretion. Rates of pH recovery were calculated as DeltapH(i)/Deltat. In one series of experiments, secretagogue-induced acid secretion was inhibited by 2% ethanol, or the AMPK activator AICAR monophosphate (AICAR) (20 mM). In a separate series, 2% ethanol was added in combination with compound C (20 microM), an AMPK inhibitor, to prevent activation of AMPK. 2% ethanol significantly suppressed stimulated acid secretion. In order to confirm modulation of AMPK activity by ethanol, the specific AMPK inhibitor compound C was used, which reversed the inhibitory effects of ethanol on stimulated acid secretion. This study demonstrates that low dose ethanol (2%) inhibits secretagogue-dependent acid secretion by activation of the AMPK pathway in rat gastric parietal cells. CI - Copyright 2010 S. Karger AG, Basel. FAU - Kopic, Sascha AU - Kopic S AD - Department of Surgery, Yale University, School of Medicine, New Haven, CT 06511, USA. FAU - Corradini, Stefanie AU - Corradini S FAU - Sidani, Shafik AU - Sidani S FAU - Murek, Michael AU - Murek M FAU - Vardanyan, Artur AU - Vardanyan A FAU - Foller, Michael AU - Foller M FAU - Ritter, Markus AU - Ritter M FAU - Geibel, John P AU - Geibel JP LA - eng PT - Journal Article DEP - 20100112 PL - Germany TA - Cell Physiol Biochem JT - Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology JID - 9113221 RN - 0 (Fluoresceins) RN - 0 (Fluorescent Dyes) RN - 0 (Hypoglycemic Agents) RN - 0 (Ribonucleotides) RN - 360-97-4 (Aminoimidazole Carboxamide) RN - 3K9958V90M (Ethanol) RN - 820484N8I3 (Histamine) RN - 85138-49-4 (2',7'-bis(carboxyethyl)-5(6)-carboxyfluorescein) RN - 8Y164V895Y (Carbachol) RN - EC 2.7.11.31 (AMP-Activated Protein Kinases) RN - F0X88YW0YK (AICA ribonucleotide) SB - IM MH - AMP-Activated Protein Kinases/antagonists & inhibitors/*metabolism MH - Aminoimidazole Carboxamide/analogs & derivatives/pharmacology MH - Animals MH - Carbachol/pharmacology MH - Ethanol/*pharmacology MH - Fluoresceins/chemistry MH - Fluorescent Dyes/chemistry MH - Gastric Acid/*metabolism MH - Gastric Mucosa/metabolism/pathology MH - Histamine/pharmacology MH - Hydrogen-Ion Concentration MH - Hypoglycemic Agents/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Ribonucleotides/pharmacology EDAT- 2010/01/30 06:00 MHDA- 2010/04/09 06:00 CRDT- 2010/01/30 06:00 PHST- 2009/11/12 00:00 [accepted] PHST- 2010/01/30 06:00 [entrez] PHST- 2010/01/30 06:00 [pubmed] PHST- 2010/04/09 06:00 [medline] AID - 000276553 [pii] AID - 10.1159/000276553 [doi] PST - ppublish SO - Cell Physiol Biochem. 2010;25(2-3):195-202. doi: 10.1159/000276553. Epub 2010 Jan 12.