搜索结果: 31-45 共查到“性科学 Sperm”相关记录416条 . 查询时间(0.174 秒)
Correlation between human sperm swelling in hypoosmotic medium（hypoosmotic swelling test）and in vitro fertilization
human sperm hypoosmotic medium（hypoosmotic swelling test） vitro fertilization
2009/2/23
Human ejaculates (n = 83) were analyzed for standard sperm parameters (concentration, motility, and morphology), as well as for the ability of the spermatozoa to react (swell) in a hypoosmotic mediu...
Lack of correlation between fertility and sperm numbers in male rats treated with histrelin, a potent LHRH agonist
correlation fertility sperm numbers male rats histrelin potent LHRH agonist
2009/2/23
Adult male rats were treated daily for up to 8 weeks with histrelin, [(ImBzl)-D-His6, Pro9-NEt]LHRH, to study the antifertility effects of this LHRH agonist. Although serum testosterone concentratio...
Laser light-scattering study of the toxic effects of methylmercury on sperm motility
methylmercury spermatozoa motility Macaca fasicularis laser light-scattering
2009/2/23
An in vitro study was designed using the laser light-scattering technique to obtain further information on the dose-effect relationship of methylmercury on sperm motility. The technique provided a q...
Factors influencing the success of sperm-cervical mucus interaction in patients exhibiting unexplained infertility
cervical mucus penetration sperm movement unexplained infertility hamster oocyte assay
2009/2/23
The factors regulating the success of sperm-cervical mucus interaction in 46 patients exhibiting unexplained infertility were analyzed. Within this group of patients, considerable variation in the d...
Selective luminal absorption of L-carnitine from the proximal regions of the rat epididymis. Possible relationships to development of sperm motility
L-carnitine rat epididymis sperm motility microperfusion
2009/2/23
The absorption of L-carnitine from the duct of the proximal regions of the rat epididymis was investigated using a stopped-flow, split-droplet microperfusion technique. L-carnitine was absorbed from...
Stimulation of sperm production by human chorionic gonadotropin after prolonged gonadotropin suppression in normal men
sperm production human chorionic gonadotropin prolonged gonadotropin suppression normal men
2009/2/20
The precise hormonal milieu required for quantitatively normal spermatogenesis in man is unclear. The authors previously have shown that both supraphysiologic dosages of human chorionic gonadotropin...
Linear and nonlinear mouse sperm motility patterns
Linear nonlinear mouse sperm motility patterns
2009/2/20
A quantitative method is described for distinguishing two types of mouse sperm motility using a new parameter, the Linear Index. One hundred spermatozoa from C57BL/6-+/+ and 100 spermatozoa from C57...
Recovery of normal testicular ultrastructure and sperm motility after cessation of gossypol treatment in rats
normal testicular ultrastructure sperm motility gossypol treatment rats
2009/2/20
This study evaluates the reversibility of the effects of gossypol on testicular ultrastructure and the motility of epididymal spermatozoa. Adult male rats were treated 6 days weekly with the vehic...
Bovine sperm adenylate cyclase. Inhibition by adenosine and adenosine analogs
adenosine epididymal spermatozoa adenylate cyclase inhibition P-site
2009/2/20
Since both adenosine and cAMP affect sperm motility and metabolism, the authors have studied the mode of interaction of adenosine with the adenylate cyclase activity in either the presence or the ab...
Analysis of human sperm function following exposure to the ionophore A23187. Comparison of normospermic and oligozoospermic men
A23187 sperm motility fertilization ohgozoospermia
2009/2/20
Time exposure photomicrography and interspecific in vitro fertilization techniques have been used to compare the responses to the divalent cation ionophore A23187 of spermatozoa from normal fertile an...
Heterogeneity of sperm density profiles following 20-week therapy with high-dose LHRH analog plus testosterone
LHRH analog sperm density heterogeneous response
2009/2/20
Eight normal male volunteers received an LHRH analog, 100 to 500 micrograms daily, for 20 weeks. Testosterone enanthate, 100 mg, was given by injection every second week. Sperm density fell to 5.5 X...
The meaning of sperm capacitation. A historical perspective
sperm capacitation historical perspective
2009/2/20
It should be recalled that sperm capacitation was originally defined in 1952 as some physiological changes of the spermatozoa in the female genital tract before they are capable of penetrating and fer...
Human sperm penetration in bovine cervical mucus. Clinical studies I
Human sperm penetration bovine cervical mucus
2009/2/19
Penetration of spermatozoa in bovine cervical mucus (BCM) from two groups of men was investigated and correlated with the different parameters of spermograms from these same subjects. Sperm penetr...
The nonprogressive motility of sperm populations from mice with a tw32 haplotype
nonprogressive motility sperm populations mice tw32 haplotype
2009/2/19
We have previously reported that epididymal spermatozoa from mice carrying a tw32 haplotype have a lower net velocity than do spermatozoa from congenic +/+ males. Using a test for nonprogressive mot...
Improvement in the sperm penetration（hamster ova）assay（SPA）results after doxycycline treatment of infertile men
leukocytes infertility sperm penetration
2009/2/19
Thirty-two men with abnormal (less than or equal to 11% penetration) Sperm Penetration (hamster ova) Assay (SPA) results were treated with doxycycline and reevaluated by SPA and seminal fluid analys...