PMID- 8869264 OWN - NLM STAT- MEDLINE DCOM- 19970103 LR - 20161020 IS - 0862-8408 (Print) IS - 0862-8408 (Linking) VI - 44 IP - 5 DP - 1995 TI - The influence of ascorbic acid on the hepatic cytochrome P-450, and glutathione in guinea-pigs exposed to 2,4-dichlorophenol. PG - 301-5 AB - Chlorophenols, mainly used as biocides, are compounds with a wide spectrum of toxic effects including teratogenic and carcinogenic actions. In this study, the effects of 2,4-dichlorophenol (2,4-DCP) on hepatic microsomal cytochrome P-450, NADPH-cytochrome c reductase activity, liver ascorbic acid (AA) and glutathione (GSH) content were studied in guinea-pigs with a low (2 mg/day/animal) or a high (50 mg/day/animal) ascorbic acid intake. The high AA intake significantly increased liver AA and GSH levels. There was a clear-cut correlation between liver AA and GSH levels. Administration of 2,4-DCP significantly decreased cytochrome P-450 and NADPH-cytochrome c reductase activity in hepatic microsomes isolated from guinea-pigs with the low AA intake. Such a reduction was not observed in intoxicated guinea-pigs with the high AA intake. The results suggest that AA can play a protective role in 2,4-DCP toxicity. FAU - Nagyova, A AU - Nagyova A AD - Institute of Preventive and Clinical Medicine, Bratislava, Slovak Republic. FAU - Ginter, E AU - Ginter E LA - eng PT - Journal Article PL - Czech Republic TA - Physiol Res JT - Physiological research JID - 9112413 RN - 0 (Chlorophenols) RN - 0 (Cytochrome P-450 Enzyme Inhibitors) RN - 9035-51-2 (Cytochrome P-450 Enzyme System) RN - GAN16C9B8O (Glutathione) RN - PQ6CK8PD0R (Ascorbic Acid) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Animals MH - Ascorbic Acid/*pharmacology MH - Chlorophenols/*pharmacology MH - Cytochrome P-450 Enzyme Inhibitors MH - Cytochrome P-450 Enzyme System/*metabolism MH - Glutathione/*metabolism MH - Guinea Pigs MH - Liver/drug effects/*metabolism MH - Male MH - Microsomes, Liver/drug effects/metabolism EDAT- 1995/01/01 00:00 MHDA- 1995/01/01 00:01 CRDT- 1995/01/01 00:00 PHST- 1995/01/01 00:00 [pubmed] PHST- 1995/01/01 00:01 [medline] PHST- 1995/01/01 00:00 [entrez] PST - ppublish SO - Physiol Res. 1995;44(5):301-5.