搜索结果: 31-45 共查到“性科学 spermatozoa”相关记录179条 . 查询时间(0.109 秒)
The ability of the rat epididymis to concentrate spermatozoa. Responsiveness to aldosterone
aldosterone epididymal spermatozoa
2009/2/19
Experiments have been performed to determine if aldosterone is involved in the control of water reabsorption from the epididymal lumen in vivo. Micropuncture samples of lumen content were collected ...
A study of phospholipase in albumin and its role in inducing the acrosome reaction of guinea pig spermatozoa in vitro
capacitation acrosome reaction spermatozoa
2009/2/19
Phospholipase activity associated with guinea pig spermatozoa during capacitation and the acrosome reaction (AR) was determined by measuring the production of [14C] glycerylphosphorylcholine (GPC) f...
Relationship Between Fertilizing Ability and cAMP in Human Spermatozoa
capacitation of human spermatozoa cAMP in human spermatozoa fertilization of zona-free hamster eggs
2009/2/19
The goal of this study was to investigate the relationship between cAMP and the fertilizing ability of human spermatozoa. Levels of cAMP were measured in human spermatozoa during 6-hour in vitro i...
Evidence for a Role of Post-Ovulatory Cumulus Components in Supporting Fertilizing Ability of Hamster Spermatozoa
fertilization in vitro capacitation acrosome reaction egg-cumulus complex golden hamster
2009/2/19
A completely chemically defined culture medium was used to investigate the role of egg-cumulus complex (ECC) components in supporting sperm fertilizing ability. Defined sperm motility-stimulating ...
The Presence of Spermatozoa in the Semen of Vasectomized Men
vasectomy sperm follow-up recanalization microrecanalization sperm reappearance
2009/2/19
Repeated semen specimens were examined from 24 men who had been vasectomized for periods of time ranging from two to 31 years. Five-micron filters were used to collect the spermatozoa in each spec...
The Effects of Cyclic Adenine Nucleotides, Phosphodiesterase Inhibitors, and Cauda Epididymidal Fluid on the Motility of Rat Epididymal Spermatozoa
spermatozoa motility epididymal rat
2009/2/19
Experiments were performed to determine whether the rat epididymis secretes a "forward-motility" factor(s) similar to that found by others in the bovine epididymis. Lumen content of the rat caput ...
Cryopreservation of Spermatozoa and Artificial Insemination：Past, Present, and Future
cryopreservation semen quality bull semen human semen semen donors
2009/2/19
This review article is intended to provide an in-depth analysis of the principles and programs established, as well as problems overcome, that have led to a successful artificial insemination (AI) p...
Ultrastructure and Maturational Changes in Spermatozoa in the Epididymis of the Pigtailed Monkey, Macaca nemestrina
ultrastructure sperm maturation spermatozoa epididymis monkey epididymal sperm
2009/2/19
Ultrastructural characteristics of the acrosome, postacrosomal region, plasma membrane, and cytoplasmic droplet in spermatozoa taken from the caput, corpus, and cauda epididymidis of the pigtailed...
Fructolysis in Human Spermatozoa Under Normal and Pathological Conditions
human spermatozoa motility anaerobic fructolysis lactic acid production
2009/2/18
Anaerobic fructolysis was studied in human spermatozoa from 1) normal, 2) oligospermic, and 3) necrospermic semen, as well as 4) in normal spermatozoa irreversibly immobilized with a spermicidal a...
Acrosin, Proacrosin, and Acrosin Inhibitor of Human Spermatozoa：Extraction, Quantitation, and Stability
acrosin proacrosin acrosin inhibitor human spermatozoa
2009/2/18
Ten different methods were evaluated to determine the treatment for obtaining maximal amounts of acrosin, proacrosin, and acrosin inhibitor (the acrosin system) from human spermatozoa by a single te...
Fertility and its relationship to motility characteristics of spermatozoa in ewes after cervical, transcervical, and intrauterine insemination with frozen-thawed ram semen
Proline glycine betaine sperm cryopreservation
2009/2/18
The fertility of ewes after artificial insemination and the relationship between fertility and motility characteristics assessed by a computerized motility analysis system were examined with ram semen...
Rabbit spermatozoa：a model system for studying ATP homeostasis and motility
Creatine kinase adenylate kinase adenylic metabolism
2009/2/18
This paper studies the adenosine triphosphate (ATP) homeostasis and the motility parameters of rabbit spermatozoa. Rabbit sperm, collected by artificial vagina, were studied in various buffer system...
Reproductive tract secretions and bull spermatozoa contain different clusterin isoforms that cluster cells and inhibit complement-induced cytolysis
Epididymal fluid rete testis fluid L-cells
2009/2/18
Clusterin from bull rete testis fluid (RTF), cauda epididymal fluid (CEF), and octyl-beta-D-glucopyranoside extract of cauda epididymal sperm (CES) was identified and characterized using monoclonal ...
Determination of the steady-state intracellular chloride concentration in capacitated human spermatozoa
Methoxy-N-ethylquinolonium N-(6-methoxyquinolyl)
2009/2/18
Chloride channels participate in the mammalian sperm acrosome reaction (AR). However, the mechanism by which sperm regulate intracellular Cl- concentration ([Cl-]i) is not known. The steady-state ...
Bicarbonate-dependent lipid ordering and protein aggregation are part of the nongenomic action of progesterone on capacitated spermatozoa
Capacitation acrosome reaction membrane bicuculline
2009/2/18
The nongenomic action of progesterone (P) on capacitated sperm in mediating acrosomal exocytosis operates through transmembrane signal transduction involving increased intracellular calcium ions and...