PMID- 11283857 OWN - NLM STAT- MEDLINE DCOM- 20010426 LR - 20161124 IS - 0270-9139 (Print) IS - 0270-9139 (Linking) VI - 33 IP - 4 DP - 2001 Apr TI - Effect of nitric oxide on shock-induced hepatic heme oxygenase-1 expression in the rat. PG - 925-37 AB - Recent evidence suggests that the hepatic expression of heme oxygenase-1 (HO-1) may preserve hepatocellular integrity after hemorrhagic shock and resuscitation (HR). Because nitric oxide (NO) has been shown to modulate HO-1 expression in cultured cells in vitro, we determined its potential role in the regulation of HO-1 expression after HR in the rat liver in vivo. HO-1 mRNA and protein were highly induced and HO enzyme activity was higher after HR when compared with time-matched sham controls. Administration of the NO donor, molsidomine (MOL) (3 mg. kg(-1)), during resuscitation attenuated the accumulation of HO-1 mRNA and protein and the rise in HO activity. In addition, MOL prevented the shock-induced increase in DNA binding activity of the transcription factor, activator protein-1 (AP-1), but did not alter the activity of nuclear factor-erythroid 2 related factor (Nrf-2), nuclear transcription factor-kappaB (NF-kappaB), and hypoxia-inducible factor-1 (HIF-1). The suppressing action of MOL was not confined to HO-1, because the hepatic expression of the 70-kd major heat shock protein (HSP) in response to HR was also diminished. Moreover, MOL prevented the HR-induced increase in the serum activity of alanine transaminase (ALT) and alpha-glutathione-S-transferase (alpha-GST) that could otherwise be observed after HR. In contrast, the NO synthase inhibitor, N(omega)-nitro-L-arginine methyl ester (L-NAME) (1 mg.kg(-1)), had either no or only minor effects on the primary experimental endpoints. These findings would be consistent with a reduction of shock-induced liver damage by exogenous NO, which in turn prevents the subsequent activation of injury-sensitive transcription factors, thus attenuating the expression of stress-inducible proteins such as HO-1. FAU - Hoetzel, A AU - Hoetzel A AD - Department of Anesthesiology and Critical Care Medicine, University of Freiburg, Germany. FAU - Vagts, D A AU - Vagts DA FAU - Loop, T AU - Loop T FAU - Humar, M AU - Humar M FAU - Bauer, M AU - Bauer M FAU - Pahl, H L AU - Pahl HL FAU - Geiger, K K AU - Geiger KK FAU - Pannen, B H AU - Pannen BH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Hepatology JT - Hepatology (Baltimore, Md.) JID - 8302946 RN - 0 (Enzyme Inhibitors) RN - 0 (HSP70 Heat-Shock Proteins) RN - 0 (Nitric Oxide Donors) RN - 0 (Transcription Factors) RN - 31C4KY9ESH (Nitric Oxide) RN - D46583G77X (Molsidomine) RN - EC 1.14.14.18 (Heme Oxygenase (Decyclizing)) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - V55S2QJN2X (NG-Nitroarginine Methyl Ester) SB - IM MH - Animals MH - Blood Pressure/drug effects MH - Enzyme Inhibitors/pharmacology MH - Gene Expression MH - HSP70 Heat-Shock Proteins/metabolism MH - Heme Oxygenase (Decyclizing)/genetics/*metabolism MH - Heme Oxygenase-1 MH - Hemodynamics MH - Liver/*metabolism/pathology MH - Male MH - Molsidomine/pharmacology MH - NG-Nitroarginine Methyl Ester/pharmacology MH - Nitric Oxide/*pharmacology MH - Nitric Oxide Donors/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Resuscitation MH - Shock, Hemorrhagic/*metabolism/pathology/physiopathology MH - Transcription Factors/metabolism EDAT- 2001/04/03 10:00 MHDA- 2001/05/01 10:01 CRDT- 2001/04/03 10:00 PHST- 2001/04/03 10:00 [pubmed] PHST- 2001/05/01 10:01 [medline] PHST- 2001/04/03 10:00 [entrez] AID - S0270-9139(01)04495-0 [pii] AID - 10.1053/jhep.2001.23431 [doi] PST - ppublish SO - Hepatology. 2001 Apr;33(4):925-37. doi: 10.1053/jhep.2001.23431.