Biomaterial Database

delta 4-3-Ketosteroid 5 alpha-oxidoreductase in human uterine leiomyoma. 1979

V V Reddy, and L I Rose

Homogenates of human endometrial, myometrial, and leiomyoma tissues were incubated with (1,2,6,7-3H)-testosterone, and 3H-dihydrotestosterone was subsequently identified, indicating the presence of the enzyme delta 4-3-Ketosteroid 5 alpha-oxidoreductase. The enzyme activity of leiomyoma was higher than that of endometrial and myometrial tissue, while endometrial activity was higher than myometrial activity. The results raise the possibility that 5 alpha-reduced androgens may play a role in the pathophysiology of uterine leiomyoma.

UI	MeSH Term	Description	Entries
D007889	Leiomyoma	A benign tumor derived from smooth muscle tissue, also known as a fibroid tumor. They rarely occur outside of the UTERUS and the GASTROINTESTINAL TRACT but can occur in the SKIN and SUBCUTANEOUS TISSUE, probably arising from the smooth muscle of small blood vessels in these tissues.	Fibroid,Fibroid Tumor,Fibroid Uterus,Fibroids, Uterine,Fibroma, Uterine,Fibromyoma,Leiomyoma, Uterine,Fibroid Tumors,Fibroid, Uterine,Fibroids,Fibromas, Uterine,Fibromyomas,Leiomyomas,Tumor, Fibroid,Tumors, Fibroid,Uterine Fibroid,Uterine Fibroids,Uterine Fibroma,Uterine Fibromas,Uterus, Fibroid
D009215	Myometrium	The smooth muscle coat of the uterus, which forms the main mass of the organ.	Uterine Muscle,Muscle, Uterine,Muscles, Uterine,Uterine Muscles
D004717	Endometrium	The mucous membrane lining of the uterine cavity that is hormonally responsive during the MENSTRUAL CYCLE and PREGNANCY. The endometrium undergoes cyclic changes that characterize MENSTRUATION. After successful FERTILIZATION, it serves to sustain the developing embryo.	Endometria
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013196	Dihydrotestosterone	A potent androgenic metabolite of TESTOSTERONE. It is produced by the action of the enzyme 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE.	5 alpha-Dihydrotestosterone,Androstanolone,Stanolone,17 beta-Hydroxy-5 beta-Androstan-3-One,17beta-Hydroxy-5alpha-Androstan-3-One,5 beta-Dihydrotestosterone,5-alpha Dihydrotestosterone,5-alpha-DHT,Anaprotin,Andractim,Dihydroepitestosterone,Gelovit,17 beta Hydroxy 5 beta Androstan 3 One,17beta Hydroxy 5alpha Androstan 3 One,5 alpha DHT,5 alpha Dihydrotestosterone,5 beta Dihydrotestosterone,Dihydrotestosterone, 5-alpha,beta-Hydroxy-5 beta-Androstan-3-One, 17
D013739	Testosterone	A potent androgenic steroid and major product secreted by the LEYDIG CELLS of the TESTIS. Its production is stimulated by LUTEINIZING HORMONE from the PITUITARY GLAND. In turn, testosterone exerts feedback control of the pituitary LH and FSH secretion. Depending on the tissues, testosterone can be further converted to DIHYDROTESTOSTERONE or ESTRADIOL.	17-beta-Hydroxy-4-Androsten-3-one,17-beta-Hydroxy-8 alpha-4-Androsten-3-one,8-Isotestosterone,AndroGel,Androderm,Andropatch,Androtop,Histerone,Sterotate,Sustanon,Testim,Testoderm,Testolin,Testopel,Testosterone Sulfate,17 beta Hydroxy 4 Androsten 3 one,17 beta Hydroxy 8 alpha 4 Androsten 3 one,8 Isotestosterone
D013741	3-Oxo-5-alpha-Steroid 4-Dehydrogenase	An enzyme that catalyzes the reduction of TESTOSTERONE to 5-ALPHA DIHYDROTESTOSTERONE.	3-Keto-5-alpha-Steroid delta-4-Dehydrogenase,5-alpha-Reductase, Testosterone,Testosterone 5-alpha-Reductase,Testosterone delta-4-5-alpha-Reductase,3-oxo-5 alpha-Steroid 4-Dehydrogenase (NADP+),3-oxo-5alpha-Steroid 4-Dehydrogenase (NADP+),4-Ene-3-Oxosteroid-5alpha-Reductase,4-Ene-5-alpha-Reductase,NADH-5-alpha-Reductase,NADPH delta(4)-3-Ketosteroid 5 alpha-Oxidoreductase,Steroid 5-alpha-Reductase,Steroid 5Alpha Reductase,Steroid delta-4-5-alpha Reductase,delta 4-3-keto Steroid 5 alpha-Oxidoreductase,delta(4)-3-Ketosteroid-5alpha-Reductase,delta4-3-ketosteroid 5alpha-Oxidoreductase,3 Keto 5 alpha Steroid delta 4 Dehydrogenase,3 Oxo 5 alpha Steroid 4 Dehydrogenase,4 Ene 3 Oxosteroid 5alpha Reductase,4 Ene 5 alpha Reductase,5 alpha Reductase, Testosterone,5-alpha-Reductase, Steroid,5Alpha Reductase, Steroid,5alpha-Oxidoreductase, delta4-3-ketosteroid,NADH 5 alpha Reductase,Reductase, Steroid 5Alpha,Reductase, Steroid delta-4-5-alpha,Steroid 5 alpha Reductase,Steroid delta 4 5 alpha Reductase,Testosterone 5 alpha Reductase,Testosterone delta 4 5 alpha Reductase,delta 4 3 keto Steroid 5 alpha Oxidoreductase,delta-4-5-alpha Reductase, Steroid,delta-4-5-alpha-Reductase, Testosterone,delta-4-Dehydrogenase, 3-Keto-5-alpha-Steroid,delta4 3 ketosteroid 5alpha Oxidoreductase
D014594	Uterine Neoplasms	Tumors or cancer of the UTERUS.	Cancer of Uterus,Uterine Cancer,Cancer of the Uterus,Neoplasms, Uterine,Neoplasms, Uterus,Uterus Cancer,Uterus Neoplasms,Cancer, Uterine,Cancer, Uterus,Cancers, Uterine,Cancers, Uterus,Neoplasm, Uterine,Neoplasm, Uterus,Uterine Cancers,Uterine Neoplasm,Uterus Cancers,Uterus Neoplasm
D066298	In Vitro Techniques	Methods to study reactions or processes taking place in an artificial environment outside the living organism.	In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In