PMID- 8699933 OWN - NLM STAT- MEDLINE DCOM- 19960830 LR - 20190701 IS - 0024-3205 (Print) IS - 0024-3205 (Linking) VI - 59 IP - 3 DP - 1996 TI - Effect of growth hormone, insulin and dexamethasone on 11 beta-hydroxysteroid dehydrogenase activity on a primary culture of rat hepatocytes. PG - 227-34 AB - 11 beta-hydroxysteroid dehydrogenase (11 beta-HSD) is a microsomal enzyme present in the peripheral tissues of the rat, including the liver, and is mediated by a number of factors in animal in vivo studies. However, the effect of peptide hormones and glucocorticoids on the activity of 11 beta-HSD in isolated rat hepatocytes is not clear. To investigate these effects, we determined 11 beta-HSD activity in a primary culture of rat hepatocytes by adding various concentrations of growth hormone, insulin and dexamethasone (Dex). 11 beta-HSD activity increased significantly after treatment with Dex (10(-9)M-10(-6)M) for 48h. Dex (100nM) treated hepatocytes, incubated for 12h to 48h, resulted in a significant two-to four-fold rise in 11 beta-HSD activity compared to control (p < 0.01), which was in contrast to GH (10(-9)M-10(-6)M) and insulin (10(-8)M-10(-5)M), which inhibited 11 beta-HSD activity (p < 0.05). These results suggest that the 11 beta-HSD of rat hepatocytes is under multifactorial regulation; Dex stimulates and GH and insulin inhibit 11 beta-HSD activity in primary cultures of rat hepatocytes. FAU - Liu, Y J AU - Liu YJ AD - Department of Pediatrics, Hamamatsu University School of Medicine, Japan. FAU - Nakagawa, Y AU - Nakagawa Y FAU - Nasuda, K AU - Nasuda K FAU - Saegusa, H AU - Saegusa H FAU - Igarashi, Y AU - Igarashi Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 RN - 0 (Insulin) RN - 7S5I7G3JQL (Dexamethasone) RN - 9002-72-6 (Growth Hormone) RN - EC 1.1.- (Hydroxysteroid Dehydrogenases) RN - EC 1.1.1.146 (11-beta-Hydroxysteroid Dehydrogenases) SB - IM MH - 11-beta-Hydroxysteroid Dehydrogenases MH - Animals MH - Cells, Cultured MH - Dexamethasone/*pharmacology MH - Growth Hormone/*pharmacology MH - Hydroxysteroid Dehydrogenases/*pharmacology MH - Insulin/*pharmacology MH - Liver/*drug effects MH - Male MH - Rats MH - Rats, Sprague-Dawley MH - Time Factors EDAT- 1996/01/01 00:00 MHDA- 1996/01/01 00:01 CRDT- 1996/01/01 00:00 PHST- 1996/01/01 00:00 [pubmed] PHST- 1996/01/01 00:01 [medline] PHST- 1996/01/01 00:00 [entrez] AID - 0024320596002883 [pii] AID - 10.1016/0024-3205(96)00288-3 [doi] PST - ppublish SO - Life Sci. 1996;59(3):227-34. doi: 10.1016/0024-3205(96)00288-3.