Search results for "17-alpha-Hydroxypregnenolone"

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Biosynthesis and transformation of 20α 21-dihydroxycholesterol by rat adrenal preparations

1979

Abstract The biosynthesis of [ 3 H]-20α, 21 dihydroxycholestderol from [ 3 H]-20α-hydroxycholesterol and its transformation to [ 3 H]-21-hydroxypregnenolone by rat adrenal preparations has been demonstrated. 20α-Hydroxycholesterol was transformed to 20α, 21-dihydroxycholesterol by microsomal preparations in the presence of NADPH and 20α-21-dihydroxycholesterol was metabolized to 21-hydroxypregnenolone by mitochondrial preparations in the presence of a NADPH-generating-system. Comparison of the Michaelis-Menten-Kinetics of the steps “20α, 21-dihydroxycholesterol → 21-hydroxycholesterol” and “20α-hydroxycholesterol → pregnenolone” revealed that both compounds behaved as analogue substrates of…

Malemedicine.drug_classStereochemistryBiology17-alpha-HydroxypregnenoloneBiochemistrychemistry.chemical_compoundEndocrinologyBiosynthesisMicrosomesAdrenal Glandspolycyclic compoundsmedicineAnimalsCholesterol Side-Chain Cleavage EnzymeCholesterol side-chain cleavage enzymeHydroxycholesterolsMitochondriaRatsTransformation (genetics)BiochemistrychemistryAlternative complement pathwayPregnenoloneMicrosomeCorticosteroidlipids (amino acids peptides and proteins)NADPmedicine.drugJournal of Steroid Biochemistry

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