搜索结果: 1-15 共查到“性科学 spermatogenesis”相关记录67条 . 查询时间(0.046 秒)
Effects of AMSA, an antineoplastic agent, on spermatogenesis in the mouse
AMSA antineoplastic agent spermatogenesis mouse
2009/2/23
The stages of spermatogenic cells killed by the single and fractionated administration of AMSA, an acridine derivative used in cancer chemotherapy, have been identified in the mouse. A wide range of...
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...
The effect of testicular x-irradiation on spermatogenesis in man. A comparison with the mouse
irradiation spermatogenesis testicular
2009/2/20
Existing data concerning the effects of x-irradiation on spermatogenesis in man were analyzed and the results were compared to published data on the mouse. Testicular x-irradiation produced a transi...
Inhibition of Spermatogenesis and Steroidogenesis During Long-Term Treatment with hCG in the Rat
hCG spermatogenesis steroidogenesis
2009/2/19
The effects of chronic treatment with hCG (100 I.U.s.c. every second day) on testicular morphology, LH receptor levels and concentration of steroid intermediates of the 4 and 5 biosynthetic pathwa...
Spermatogenesis in Men Treated with Subcutaneous Application of Levonorgestrel and Estrone Rods
spermatogenic arrest silastic rods hormone-impregnated subcutaneous implantation
2009/2/19
The effects of a combination of a progestin, levonorgestrel (LNg), and estrone (E1), on exocrine and endocrine testicular function were examined in adult men. The mode of administration was subc...
Further Studies on the Inhibitory Effect of [D-A1a6, des-Gly-NH210]LHRH Ethylamide on Spermatogenesis and Steroidogenesis in the Rat：Reversibility and Effect of Androgen Administration
antifertility spermatogenesis LHRH agonist
2009/2/18
Following the recent observation that chronic treatment with [D-Ala6, des-Gly-NH210]LHRH ethylamide, a potent LHRH agonist, leads to an almost complete degeneration of seminiferous tubules in the ra...
A lower dosage levonorgestrel and testosterone combination effectively suppresses spermatogenesis and circulating gonadotropin levels with fewer metabolic effects than higher dosage combinations
testosterone combination circulating gonadotropin levels metabolic effects
2009/2/18
Studies using exogenous high-dosage testosterone (T) or a combination regimen of physiologic T plus high-dosage levonorgestrel (LNG) administration in normal men have shown that oligoazoospermia (...
Testosterone-dependent restoration of spermatogenesis in adult rats is impaired by a 5alpha-reductase inhibitor
Testosterone-dependent restoration spermatogenesis adult rats 5alpha-reductase inhibitor
2009/2/18
Germ cell development (spermiogenesis in particular) in the adult rat is known to be testosterone dependent. Recently we proposed a role for the 5alpha reduction of testosterone to dihydrotestostero...
Suppression of growth hormone does not affect ongoing spermatogenesis in rats
Suppression of growth hormone ongoing spermatogenesis rats
2009/2/18
Recent evidence suggests that growth hormone (GH) may enhance physiologic processes, such as spermatogenesis, in addition to causing classical anabolic effects. We have previously shown that testost...
Spermatogenesis in early and chronic phases of experimental spinal cord injury in the rodent model
Flow cytometry sperm chromatin sperm chromatin
2009/2/18
A rodent model was used to study the degree and dynamics of potential spermatogenic alterations during both acute and chronic phases after experimental spinal cord injury (SCI). Sexually mature Spra...
Selective expression of a glutathione S-transferase subclass during spermatogenesis
High-performance liquid chromatography development
2009/2/18
Levels of the hGSTM3 glutathione S-transferase (GST) subunit in testis of the human fetus and infant were found to be only a small fraction of those in adults. To understand these observations and...
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...
Vitamin E deficiency causes incomplete spermatogenesis and affects the structural differentiation of epithelial cells of the epididymis in the rat
Vitamin E structural differentiation epithelial cells epididymis rat
2009/2/17
The effects of vitamin E deficiency on the rat testis and epididymis were examined in a light- and electron-microscopic analysis. Various groups of animals were made vitamin E-deficient, beginning...