title: Enzyme inhibition in human skin homogenates by hydrocortisone, hydrocortisone acetate and hydrotisone butyrate.
abstract: In fresh human skin homogenates, the activities of four enzymes, lactate dehydrogenase (LDH), glucose-6-phosphate dehydrogenase (G-6-PDH), "acid" phosphatase (AcP), and "leucine aminopeptidase" (LAP) were assayed following an incubation with hydrocortisone, hydrocotisone acetate, or hydrocortisone-17-butyrate, respectively. Concentration of the three compounds measured 2.75 mMol/l. Hydrocortison butyrate inhibited LDH-G-6-PDH-, and AcP-activities. Hydrocortisone and hydrocortisone acetate exerted a significant inhibitory action only in the case of G-6-PDH-activity.--On pure G-6-PDH from yeast, the inhibition exerted by hydrocortisone butyrate was significantly stronger than the inhibition exerted by the two other steroids. Time/action diagrams revealed the fact that hydrocortisone butyrate is superior to the other two compounds from the beginning of the incubation period.--The date sustain the assumption that hydrocortisone butyrate exerts biochemical-pharmacological actions of its own and that it may not be considered just as an esterified transport form of hydrocortisone.
mesh_terms: D000085:Acetates; D000135:Acid Phosphatase / Q000037:antagonists & inhibitors; D000287:Administration, Topical; D000893:Anti-Inflammatory Agents / Q000494:pharmacology; D002087:Butyrates; D005954:Glucosephosphate Dehydrogenase / Q000037:antagonists & inhibitors; D006801:Humans; D006854:Hydrocortisone / Q000031:analogs & derivatives* / Q000494:pharmacology*; D007770:L-Lactate Dehydrogenase / Q000037:antagonists & inhibitors; D007931:Leucyl Aminopeptidase / Q000037:antagonists & inhibitors; D012867:Skin / Q000201:enzymology*
chemical_list: D000085:Acetates; D000893:Anti-Inflammatory Agents; D002087:Butyrates; D007770:L-Lactate Dehydrogenase; D005954:Glucosephosphate Dehydrogenase; D000135:Acid Phosphatase; D007931:Leucyl Aminopeptidase; D006854:Hydrocortisone