PMID- 11786231 OWN - NLM STAT- MEDLINE DCOM- 20020306 LR - 20191227 IS - 0006-3002 (Print) IS - 0006-3002 (Linking) VI - 1568 IP - 3 DP - 2001 Dec 19 TI - Reoxygenation after cold hypoxic storage of cultured precision-cut rat liver slices: effects on cellular metabolism and drug biotransformation. PG - 245-51 AB - Cultured rat precision-cut liver slices (PCLS) were used to study the influence of hypothermic preservation and reoxygenation at 37 degrees C on cellular metabolism and drug biotransformation. Cold hypoxic storage caused a depressed metabolism in rat liver slices, but reoxygenation for 8 h at 37 degrees C partially restored the levels of both ATP and GSH and totally restored the capacity to synthesize proteins. Metabolism of midazolam (CYP3A-dependent oxidation) by cold preserved liver slices was decreased by 30% but no further affected by reoxygenation, showing the same profile as freshly cut slices. Such a reoxygenation at 37 degrees C is accompanied by a dramatic loss of CYP3A2 protein while CYP3A1 protein was unaffected. These results suggest that CYP3A2 did not play a major role in midazolam oxidation. Such results are not consistent with a putative reoxygenation injury but rather with cold hypoxic damage. Since cold preserved liver slices did not respond to bacterial endotoxin stimulation (lipopolysaccharides), a minor role of non-parenchymal cells is suggested as mediators for deleterious effects developed during the cold storage. FAU - Rekka, E AU - Rekka E AD - Unite de Pharmacocinetique, Metabolisme, Nutrition et Toxicologie, Departement de Sciences Pharmaceutiques, Universite Catholique de Louvain, Louvain, Belgium. FAU - Evdokimova, E AU - Evdokimova E FAU - Eeckhaudt, S AU - Eeckhaudt S FAU - Calderon, P B AU - Calderon PB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Biochim Biophys Acta JT - Biochimica et biophysica acta JID - 0217513 RN - 0 (Lipopolysaccharides) RN - 8L70Q75FXE (Adenosine Triphosphate) RN - 9035-51-2 (Cytochrome P-450 Enzyme System) RN - EC 1.14.- (Steroid Hydroxylases) RN - EC 1.14.14.1 (Aryl Hydrocarbon Hydroxylases) RN - EC 1.14.14.1 (Cyp3a23-3a1 protein, rat) RN - EC 1.14.14.1 (Cytochrome P-450 CYP3A) RN - EC 1.14.14.1 (steroid hormone 6-beta-hydroxylase) RN - GAN16C9B8O (Glutathione) RN - R60L0SM5BC (Midazolam) RN - S88TT14065 (Oxygen) SB - IM MH - Adenosine Triphosphate/analysis MH - Animals MH - *Aryl Hydrocarbon Hydroxylases MH - Biotransformation MH - Cold Temperature MH - *Cryopreservation MH - Cytochrome P-450 CYP3A MH - Cytochrome P-450 Enzyme System/analysis MH - Energy Metabolism MH - Glutathione/analysis MH - Lipopolysaccharides MH - *Liver MH - Male MH - Midazolam/chemistry MH - Oxidation-Reduction MH - *Oxygen MH - Rats MH - Rats, Wistar MH - Steroid Hydroxylases/analysis MH - Time Factors EDAT- 2002/01/12 10:00 MHDA- 2002/03/07 10:01 CRDT- 2002/01/12 10:00 PHST- 2002/01/12 10:00 [pubmed] PHST- 2002/03/07 10:01 [medline] PHST- 2002/01/12 10:00 [entrez] AID - S0304416501002252 [pii] AID - 10.1016/s0304-4165(01)00225-2 [doi] PST - ppublish SO - Biochim Biophys Acta. 2001 Dec 19;1568(3):245-51. doi: 10.1016/s0304-4165(01)00225-2.