PMID- 12416023 OWN - NLM STAT- MEDLINE DCOM- 20030606 LR - 20220409 IS - 1359-4117 (Print) IS - 1359-4117 (Linking) VI - 2 IP - 4 DP - 2002 Jul-Aug TI - Inhibitory effect of vitamin D3 on 3'methyl-4-dimethyl-amino-azobenzene-induced rat hepatocarcinogenesis: a study on antioxidant defense enzymes. PG - 193-9 AB - The anticarcinogenic effect of vitamin D3 (VD3) on 3,-methyl-4-dimethyl-amino-azobenzene (3,-Met-DAB)-induced hepatocarcinogenesis was investigated in male Sprague-Dawley rats. Anticancer efficacy of VD3 was estimated using different possible biomarkers, namely reduced glutathione (GSH) concentration, gamma-glutamyl transpeptidase (GGT) activity, glutathione S-transferase (GST) activity, glutathione reductase (GRd) activity, glutathione peroxidase (GPx) activity in hyperplastic nodules (HNs) and non-nodular surrounding parenchyma (NNSP) liver areas. VD3 was found to control the carcinogen-induced alterations in GSH level, GST, GGT, GRd and GPx activity both in HNs and NNSP liver areas during long-term exposure. A decrease in the number of HNs was also evident in the present investigation. VD3 was proved to be an effective antitumor drug during the initiation/promotion phases of hepatic carcinogenesis but the effect was found to be less prominent during initiation and promotion phases. FAU - Karmakar, Ranajit AU - Karmakar R AD - Department of Zoology, Taki Government College, Taki, North 24 Parganas, West Bengal, India. rk_wbes@lycos.com FAU - Banik, Sarmistha AU - Banik S FAU - Chatterjee, Malay AU - Chatterjee M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Exp Ther Oncol JT - Journal of experimental therapeutics & oncology JID - 9604933 RN - 0 (Anticarcinogenic Agents) RN - 0 (Antioxidants) RN - 1C6V77QF41 (Cholecalciferol) RN - 57X2AH42T1 (p-Aminoazobenzene) RN - 64-01-7 (3-methyl-4-methylaminoazobenzene) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.8.1.7 (Glutathione Reductase) RN - EC 2.3.2.2 (gamma-Glutamyltransferase) RN - EC 2.5.1.18 (Glutathione Transferase) SB - IM MH - Animals MH - Anticarcinogenic Agents/*pharmacology MH - Antioxidants/*metabolism MH - Carcinoma, Hepatocellular/*chemically induced/*enzymology/metabolism/pathology MH - Cell Division/drug effects MH - Cholecalciferol/*pharmacology MH - Glutathione Peroxidase/metabolism MH - Glutathione Reductase/metabolism MH - Glutathione Transferase/metabolism MH - Male MH - Rats MH - Rats, Sprague-Dawley MH - gamma-Glutamyltransferase/metabolism MH - p-Aminoazobenzene/*analogs & derivatives/*pharmacology EDAT- 2002/11/06 04:00 MHDA- 2003/06/07 05:00 CRDT- 2002/11/06 04:00 PHST- 2002/11/06 04:00 [pubmed] PHST- 2003/06/07 05:00 [medline] PHST- 2002/11/06 04:00 [entrez] AID - 10.1046/j.1359-4117.2002.01032.x [doi] PST - ppublish SO - J Exp Ther Oncol. 2002 Jul-Aug;2(4):193-9. doi: 10.1046/j.1359-4117.2002.01032.x.