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The Trade-Off Between Hormonal Contraceptives And Condoms Among Adolescents
sexually transmitted disease sexual partner contraceptive use
2009/9/17
CONTEXT: Adolescents' dual use of condoms and hormonal contraceptives is low, and the motivations underlying their decisions to combine contraceptives are not understood.
METHODS: To examine how p...
The hormonal regulation of premeiotic steps of spermatogenesis in the newborn rat
mmature testis follicle stimulating hormone newborn rats testosterone propionate testicular
2009/2/20
the effect of high doses of testosterone propionate (TP) on the development of the first spermatogenic wave was systematically analyzed to determine the period of maximal susceptibility to testoster...
Acute hormonal changes following chemotherapy for Hodgkin's disease in man
Acute hormonal changes Hodgkin's disease man
2009/2/19
Eleven men, aged 21 to 60 years, with Hodgkin's disease have been studied before, during, and after chemotherapy. Blood samples were obtained for hormone analyses. In all 11 patients FSH levels rose...
Animal model of isolated gonadotropin deficiency. I. Hormonal responses to LHRH immunoneutralization
hypogonadotropic-hypogonadism luteinizing hormone releasing hormone pituitary serum LH
2009/2/19
Five intact male mongrel dogs, characterized by an episodic secretory pattern of LH and normal serum testosterone concentrations, were actively immunized against LHRH by subcutaneous injections of 2...
The Use of BCG（Bacille Calmette Guérin）as an Antispermatogenic Agent: Structural and Hormonal Changes
antispermatogenic agent BCG contraception orchitis granuloma
2009/2/19
The effectiveness of intratesticularly injected bacille Calmette Guérin (BCG) as an antispermatogenic agent was examined by light microscopy in rats after three, six, ten, twenty, and 56 days and in...
Hormonal regulation of inhibin B secretion by immature rat sertoli cells in vitro：possible use as a bioassay for estrogen detection
Male reproduction estrogens
2009/2/18
The influences of follicle-stimulating hormone (FSH), gonadal steroids, and culture time were studied in relation to inhibin B production by Sertoli cells of immature rats cultured in vitro. Serto...
Hormonal regulation of spermatogenesis in the hypophysectomized rat: quantitation of germ-cell population and effect of elimination of residual testosterone after long-term hypophysectomy
Testis germ cells androgen morphometry
2009/2/17
Spermatogenesis continues after long-term hypophysectomy (Hx), but massive cell degeneration prevents seminiferous tubules from attaining the full complement of cells. One objective of this study ...
Hormonal regulation of spermatogenesis in the hypophysectomized rat：cell viability after hormonal replacement in adults after intermediate periods of hypophysectomy
Testis testosterone FSH
2009/2/17
A quantitative analysis of germ-cell populations in normal, hypophysectomized (Hx), and Hx-hormone-treated animals was undertaken during periods of regression that were characterized as intermedia...
Hormonal regulation of spermatogenesis in the hypophysectomized rat：FSH maintenance of cellular viability during pubertal spermatogenesis
Testis testosterone hypohysectomy cellviability
2009/2/17
The potential for follicle-stimulating hormone (FSH) to promote germ-cell survival and the cellular sites of FSH action were studied using a gonadally maturing (pubertal), hypophysectomized (Hx) rat...
Descent of the testes is a complex event mediated by hormonal and mechanical factors. At present we hypothesize that testicular descent occurs as the result of the secretion of descendin from a no...
Hormonal protection from cyclophosphamide-induced inactivation of rat stem spermatogonia
Hormonal protection cyclophosphamide-induced inactivation rat stem spermatogonia
2009/2/13
Studies of protection of testicular function from cyclophosphamide with hormonal pretreatment have been limited by the lack of a convenient model for cyclophosphamide-induced inactivation of stem ...
Appearance of alpha-smooth muscle actin in peritubular cells of monkey testes is induced by androgens, modulated by follicle-stimulating hormone, and maintained after hormonal withdrawal
alpha-smooth muscle actin peritubular cells androgens follicle-stimulating hormone
2009/2/12
This study analyzed the hormonal requirements necessary for the development of primate testicular peritubular cells. Alpha-smooth muscle actin, as a specific differentiation marker for peritubular c...
Hormonal modulation of the interactions of cultured rat testicular Sertoli and peritubular myoid cells. Effects on glycosaminoglycan synthesis
Protein sulfoprotein glycosaminoglycan extracellular matrix cocultures
2009/2/11
Previous investigators have suggested metabolic cooperation between Sertoli and peritubular cells. This study concerns Sertoli cell and peritubular myoid cell interactions in terms of synthesis of...
Experimental cryptorchidism in the adult mouse：II. A hormonal study
Leydig cells FSH LH testosterone hCG radioimmunoassay
2009/2/6
Serum follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone levels and secretory capacity of the in vitro stimulated testis were determined in control and bilateral cryptorc...
Mouse seminal vesicle secretory protein of 99 amino acids（MSVSP99）：characterization and hormonal and developmental regulation
Mouse seminal vesicle secretory protein developmental regulation
2008/12/29
Polyclonal antibodies have been generated to investigate the localization, tissue and species distribution, androgen regulation, and ontogeny of a protein secreted by mouse seminal vesicle, designat...