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Cellular Regulation of the Metabolism of Androgens in Rat Oral Mucosa. II. Product Activation of 17 β-hydroxysteroid Oxidoreductase Enzyme System
Jozef Vittek
Department of Medicine, New York Medical College, New York 10029, U.S.A., Department of Dentistry, New York Medical College, New York 10029, U.S.A.
Gary G. Gordon
Department of Medicine, New York Medical College, New York 10029, U.S.A., Department of Dentistry, New York Medical College, New York 10029, U.S.A.
Sydney C. Rappaport
Department of Medicine, New York Medical College, New York 10029, U.S.A., Department of Dentistry, New York Medical College, New York 10029, U.S.A.
A. Louis Southren
Department of Medicine, New York Medical College, New York 10029, U.S.A., Department of Dentistry, New York Medical College, New York 10029, U.S.A.
Product activation of 17β-hydroxysteroid oxidoreductase for testosterone and androstenedione was established using the enzyme preparation from rat oral mucosa. It is suggested that this activation could be due to the conformational changes of the enzyme.
REFERENCES
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-3H-testosterone by rat oral mucosa: Effect of medroxyprogesterone acetate on testosterone A-ring reductase activity, Endocrinology 95: 1473-1477, 1974.[Abstract/Free Full Text] - Vittek, J.; Altman K.; Rappaport, S.C.; Gordon, G.G.; Hagedoorn, J.; and Southren, A.L.: Effect of progestins on androgen
4-3-ketosteroid-5 -A-ring reductase system in rat oral mucosa, J Dent Res 57:511-519, 1978.[Abstract/Free Full Text] - El Attar, T.M.A.: The in vitro conversion of male sex steroid 1,2-3H-androstenedione in normal and inflamed human gingiva, Arch Oral Biol 19:1185-1190, 1974.[CrossRef][Medline]
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- Vittek, J.; Gordon, G.G.; Rappaport, S.C.; and Southren, A.L.: Effect of plasma progesterone on
4-3-ketosteroid-5 -reductase activity in human gingiva and its biological significance, J Dent Res. 57:Abstract 946,1978. - Oshima, H.; Sarada, T.; Ochiai, K. and Tamaoki, B.:
4-5 -hydrogenase in immature rat testes: Its intracellular distribution, enzyme kinetics, and influence of administered gonadotropins and testosterone propionate, Endocrinology 86:1215-1224, 1970.[Abstract/Free Full Text] - Gordon, G.G.; Altman, K.; Southren, A.L. and Olivo, J.: Human hepatic testosterone A-ring reductase activity: Effect of medroxyprogesterone acetate, J Clin Endocrinol Metab 32:457-461, 1971.[Abstract/Free Full Text]
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Journal of Dental Research, Vol. 58, No. 2,
638-641 (1979)
DOI: 10.1177/00220345790580021801

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