Primary culture of normal rat adrenocortical cells. II. Quantitation of steroid dehydrogenase stain.
A simple, rapid procedure for the quantitation of the histochemical stain for delta 5-3beta-hydroxysteroid dehydrogenase (3beta-HSD) in cultured cells is described. Adrenocortical cells were stained for 3beta-HSD and then solubilized with 0.5 N NaOH. The absorbance of the solubilized cell solution was measured at 570 nm and a linear relationship was obtained between the number of cells and the intensity of the absorption. It is shown that the regulation of 3beta-HSD activity in primary cultures of normal rat adrenocortical cells can be monitored by the quantitative histochemical assay. The results show a good correlation with the data obtained by a biochemical assay for the enzyme.
D015096:3-Hydroxysteroid Dehydrogenases / Q000378:metabolism*; D000302:Adrenal Cortex / Q000201:enzymology*; D000324:Adrenocorticotropic Hormone / Q000494:pharmacology; D000818:Animals; D002478:Cells, Cultured; D006651:Histocytochemistry; D007700:Kinetics; D008297:Male; D051381:Rats; D013194:Staining and Labeling
D000324:Adrenocorticotropic Hormone; D015096:3-Hydroxysteroid Dehydrogenases