Kinetic study of HCG induced decrease of microsomal 7α-hydroxylase activity in rat testes
作者:W. Eechaute、E. Lacroix、I. Leusen
DOI:10.1016/0039-128x(80)90048-3
日期:1980.12
Microsomes from rat testes were incubated with varying concentrations of 14C labelled testosterone and androstenedione. The production of 7 alpha-hydroxytestosterone and 7 alpha-hydroxyandrostenedione was followed; Km and Vm values were calculated from Lineweaver-Burk curves. A sustained treatment of rats with HCG resulted in a considerable decrease of the maximal 7 alpha-hydroxylation rats (Vm) whereas the Km value was not changed. Vm of microsomes from normal rats, when incubated with microsomes from HCG-treated animals, was also decreased substantially. It is concluded that HCG-induced depression of 7 alpha-hydroxylation capacity of testicular microsomes is at least in part due to non-competitive inhibition of the enzyme.
ANDROGEN RECEPTOR ANTAGONISTS
申请人:THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
公开号:US20170101384A1
公开(公告)日:2017-04-13
Disclosed herein are compositions and methods for modulating the androgen receptor.
Efficient Transfer Hydrogenation of Ketones using Methanol as Liquid Organic Hydrogen Carrier
作者:Nidhi Garg、Soumen Paira、Basker Sundararaju
DOI:10.1002/cctc.202000228
日期:2020.7.6
an efficient protocol for transferhydrogenation of ketones using methanol as practical and useful liquid organic hydrogen carrier (LOHC) under Ir(III) catalysis. Various ketones, including electron‐rich/electron‐poor aromatic ketones, heteroaromatic and aliphatic ketones, have been efficiently reduced into their corresponding alcohols. Chemoselective reduction of ketones was established in the presence
Metal-Free Catalyst for Visible-Light-Induced Oxidation of Unactivated Alcohols Using Air/Oxygen as an Oxidant
作者:Waldemar Schilling、Daniel Riemer、Yu Zhang、Nareh Hatami、Shoubhik Das
DOI:10.1021/acscatal.8b01067
日期:2018.6.1
as a metal-free and additive-free photocatalyst for the selective oxidation of primary and secondary alcohols under visible light. With this photocatalyst, a plethora of alcohols such as aliphatic, heteroaromatic, aromatic, and alicyclic compounds has been converted to the corresponding carbonyl compounds using air/oxygen as an oxidant. In addition to these, several steroids have been oxidized to the