...: Adrenal function was assessed prospectively in 3 HIV-exposed neonates given short-term prophylactic treatment and 3 HIV-infected adolescents given long-term treatment. Plasma cortisol, 17-OHP, 17-OH-pregnenolone, DHEA-S, and androstenedione were measured before and after ACTH administration. Results: None...

... of dehydroepiandrosterone sulfate and androstenedione (Δ4A) as compared with the end-pubertal level. In the present study we evaluated HV in relation to dehydroepiandrosterone sulfate and Δ4A levels in 149 healthy girls of various Tanner stages. HV was correlated with Δ4A and estradiol levels in Tanner stages I-III...

...J.W. Gregory; A. Aynsley-Green; B.A.J. Evans; L.A. Hughes; E.A. Werder; M. Zachmann The diagnosis of 17-ketoreductase deficiency is established in most patients at or after puberty when basal plasma androstenedione levels are high; data on prebubertal children are limited. Two infants with external...

... steroids and plasma dehydroepiandrosterone, 17-hydroxyprogesterone and estradiol were normal, but testosterone and androstenedione elevated in both cases. Echography showed polycystic ovaries. Testosterone and androstenedione returned to normal after laparotomy and removal of ovarian cysts in patient 1...

...S. Andò; C. Giacchetto; M. Canonaco; S. Aquila; A. Valenti; E. Beraldi; A. Piro; F. Dessì-Fulgheri In the present study we investigated the effects of castration on androstenedione (A), testosterone (T) and dihydrotestosterone (DHT) plasma levels in adult male rats 5 and 47 days after castration...

..., B 23, Université de Liège. Belgique Key Words. Ovary Testicle LH FSH LH-RH Testosterone Estradiol Androstenedione FSH-receptor binding inhibitor Inhibin Gonadocrinins Abstract. The various mechanisms regulating testicular and ovarian androgen secretion are reviewed. Testicular...

..., by Garn’s method. This was to evaluate the rate of bone loss with increasing age. Testosterone, androstenedione, estrone, 17β-estradiol plasma levels were determined in all subjects by the RIA method. 60% of our patients showed increased bone resorption (PCA < 55%); in these subjects testosterone...

... to prolactin, followed by corticosterone, androstenedione, and progesterone. We conclude that prolactin is an adrenocortical secretagogue of physiological relevance in the rat, and that it could play a role in enhancing the action of ACTH to acutely release steroids. 25 11 1983 3 05 1984 26 11...

...J. Fiet; B. Gourmel; J.M. Villette; J.L. Brerault; R. Julien; G. Cathelineau; C. Dreux A simultaneous radioimmunoassay for Δ4-androstenedione (Δ4), dehydroepiandrosterone (DHA) and 11 β-hydroxyandrostenedione (11βOHΔ4) in plasma is described. This involved preparing first an anti-11β...

...P.A. Lee; M.D. Urban; J.P. Gutai; C.J. Migeon To determine whether a single morning plasma level of 17-hydroxyprogesterone (170H-P), androstenedione, testosterone and progesterone reflected the degree of control of 21 -hydroxylase congenital virilizing adrenal hyperplasia (CVAH) as indicated by 24...

...I.F. Lau; S.K. Saksena; M.C. Chang The concentrations of testosterone (T), 5α-dihydrotestosterone (5α-DHT) and Δ 4 -androstenedione (Δ 4 A) in the circulating blood were increased by a single subcutaneous injection of 10 IU of hCG in the mouse. The response of androgen synthesis to hCG stimulation...

... S. Mistry and S.N. Ghosh Division of Endocrinology, Cancer Research Institute, Bombay Key Words. Gynaecomastic tissue Biotransformation Androstenedione Testoster­ one 5a-Reductase Aromatizing enzymes Urinary oestrogens Abstract. In vitro transformation of precursors to androgens...