搜索结果: 1-15 共查到“医学 Sperm Function”相关记录15条 . 查询时间(0.248 秒)
Analysis of the relationship between defective sperm function and the generation of reactive oxygen species in cases of oligozoospermia
defective sperm function reactive oxygen species oligozoospermia
2009/2/23
The ability of human spermatozoa to exhibit sperm-oocyte fusion in response to the ionophore, A23187, was examined in relation to the capacity of these cells to generate reactive oxygen species. I...
Diagnostic value of sperm function tests and routine semen analyses in fertile and infertile men
Diagnostic value sperm function tests routine semen analyses fertile infertile men
2009/2/23
The results of routine semen analyses, the zona-free hamster oocyte penetration test, the hypoosmotic swelling test, and semen adenosine triphosphate levels were studied in 66 fertile and 130 infe...
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...
Extender components and surfactants affect boar sperm function and membrane behavior during cryopreservation
Extender components surfactants boar sperm function membrane behavior cryopreservation
2009/2/18
To determine how the individual components of extenders affected boar sperm function and membrane structure and to test a new surfactant's cryoprotective ability, boar sperm were cryopreserved in ...
Regulation of sperm function by protein tyrosine phosphorylation in diverse wild felid species
Cat cAMP capacitation
2009/2/18
Protein tyrosine phosphorylation is associated with sperm capacitation and the acrosome reaction in several mammalian species. Changes in phosphorylation of a 95-kDa protein in human, mouse, and d...
Sperm function and choice of preparation media：comparison of Percoll and Accudenz discontinuous density gradients
Sperm maturity and creatine kinase motile sperm yield sperm activation chiortetracycline
2009/2/16
We compared the sperm populations prepared by Accudenz (35-65%) and Percoll (40-80%) density gradients in 21 normospermic specimens (concentration, 53.6 +/- 3.8 x 10(6) sperm/ml; motility, 44.5 +/...
Leukocytic infiltration into the human ejaculate and its association with semen quality, oxidative stress, and sperm function
Leukocytes reactive oxygen species sperm function
2009/2/12
Immunocytochemical techniques have been used to monitor the size and composition of the leukocyte population in unfractionated human semen samples and sperm populations generated by Percoll gradie...
Evidence for a role of cysteinyl leukotrienes in mouse and human sperm function
spermatozoa fertilization leukotrienes receptor antagonist FPL-55712
2009/1/5
The in vitro fertilizing capacity of mouse spermatozoa was inhibited by FPL-55712, a receptor antagonist of the cysteinyl-containing leukotrienes LTC4, LTD4, and LTE4. Inhibition occurred whether ...
Evaluation of human sperm function after repeated freezing and thawing
Freezing methods HICSI seminal plasma normozoospermia oligozoospermia
2008/12/30
Sperm storage via freezing has been useful for men who have difficulty masturbating during assisted reproductive technology (ART) programs and before impotency caused by chemotherapy, vasectomy, and...
Long-term effects of triptolide on spermatogenesis, epididymal sperm function, and fertility in male rats
spermatogenesis epididymal sperm function fertility male rats
2008/12/25
Prior studies had suggested that triptolide, a diterpene triepoxide isolated from a Chinese medicinal plant, might be an attractive candidate as a post-testicular male contraceptive agent. Despite the...
Hyalp1 in Murine Sperm Function：Evidence for Unique and Overlapping Functions With Other Reproductive Hyaluronidases
Sperm antigen, hyaluronidase activity Spam1 null sperm acrosome reaction cumulus penetration hyaluronic acid receptor
2008/12/24
While Sperm adhesion molecule 1 (SPAM1) is the highly conserved mammalian sperm hyaluronidase (hyase), multiple hyases are present in the mouse testis. In this study we show that one of the murine h...
Impaired Sperm Function After Spinal Cord Injury in the Rat Is Associated With Altered Cyclic Adenosine Monophosphate Signaling
cAMP SYBR-14 JC-1
2008/12/23
Our previous observations of changes in the expression of cAMP-dependent genes and the cAMP-responsive element modulator (CREM) in rat testicular cells after spinal cord injury (SCI) implied abnor...
Cooling and Freezing of Boar Spermatozoa：Supplementation of the Freezing Media With Reduced Glutathione Preserves Sperm Function
Pig spermatozoa antioxidants cryopreservation in vitro fertilization capacitation status
2008/12/23
In this study, we evaluated the effects of glutathione (L--glutamyl-L-cysteinylglycine; GSH) supplementation of the freezing extender on semen parameters during the cooling (2 hours at 5°C) and free...
A Review of the Effect of Platelet-Activating Factor on Male Reproduction and Sperm Function
Platelet-Activating Factor Male Reproduction Sperm Function
2008/12/5
Ten to 15% of reproductive age couples in the United States are not able to achieve a successful pregnancy and are considered infertile. Infertility affects men and women equally. Male fertility r...
Evaluation of human sperm function after repeated freezing and thawing
Evaluation human sperm function repeated freezing thawing
2008/12/2
Sperm storage via freezing has been useful for men who have difficulty masturbating during assisted reproductive technology (ART) programs and before impotency caused by chemotherapy, vasectomy, and...