搜索结果: 1-15 共查到“性科学 Penetration”相关记录19条 . 查询时间(0.056 秒)
Cytochalasin D inhibits penetration of hamster eggs by guinea pig and human spermatozoa
Cytochalasin D inhibits penetration hamster eggs guinea pig human spermatozoa
2009/2/23
Fertilization experiments using zona-free hamster eggs and spermatozoa from both guinea pig and human were conducted in the presence of cytochalasin D to evaluate the possible role of actin filame...
Comparison of the penetration ability of human spermatozoa into bovine cervical mucus and zona-free hamster eggs
penetration ability human spermatozoa bovine cervical mucus zona-free hamster eggs
2009/2/20
In vitro bovine cervical mucus (BCM) penetration tests, sperm penetration assays (SPA) using zona-free hamster eggs, and routine semen analyses were performed on a total of 136 freshly collected sem...
Effects of white blood cells on the in vitro penetration of zona-free hamster eggs by human spermatozoa
white blood cells zona-free hamster eggs human spermatozoa
2009/2/20
The presence of white blood cells in semen has been associated with male infertility. Previous studies indicate that pyospermia occurs in conjunction with decreases in sperm motility, number of no...
Comparison of glycerol and a zwitter ion buffer system as cryoprotective media for human spermatozoa. Effect on motility, penetration of zona-free hamster oocytes, and acrosin/proacrosin
spermatozoa human cryopreservation
2009/2/20
This study compared the cryoprotective effect of glycerol with that of a zwitter ion buffer system (TESTCY). Spermatozoa that are cryopreserved in the presence of glycerol possess a somewhat highe...
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...
Heterologous ovum penetration test and seminal parameters in fertile and infertile men
Heterologous ovum penetration test seminal parameters fertile infertile men
2009/2/19
Sperm penetration rates in the heterologous ovum penetration test were correlated with results of routine semen analysis in 30 fertile and 50 infertile men. There was no difference in penetration ra...
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...
Characterization of the Sperm Penetration Bioassay
hamster egg bioassay human sperm infertility zona-free
2009/2/19
Parameters influencing the zona-free hamster egg bioassay for human sperm fertility potential were evaluated. Egg recovery from hamsters superovulated at random with respect to their estrous cycle w...
The Effect of Inhibitors of Trypsin and Phospholipase A2 on the Penetration of Zona Pellucida-free Hamster Eggs by Acrosome-reacted Hamster Sperm
Trypsin Phospholipase A2 Penetration Zona Pellucida-free Hamster Eggs
2009/2/19
The involvement of a trypsin-like enzyme and a phospholipase A2 in hamster sperm-egg fusion was investigated. Previously acrosome-reacted sperm and zona pellucida-free eggs were incubated in a low...
Sperm Penetration into Rat Ova Fertilized In Vitro
fertilization sperm penetration spermatozoon oocyte
2009/2/19
The scanning electron microscope was used to study the morphology of sperm entry into the zona-intact rat ova fertilized in vitro. It is the anteriormost tip of the sperm head, which first associate...
Ultrastructural Observations on the Penetration of Human Sperm into the Zona Pellucida of the Human Egg In Vitro
ultrastructure zona pellucida human ova acrosome reaction
2009/2/19
Sperm penetration into the zona of 46 human eggs was examined by electron microscopy. Preovulatory oocytes were aspirated at laparoscopy and inseminated by methods which produced normal pregnancie...
Zona pellucida piercing enhances zona penetration by spermatozoa from normospermic and teratospermic domestic cats
Felid micromanipulation sperm teratospermia
2009/2/12
Poor quality ejaculates appear associated with reduced zona penetration and poor fertilization in vitro in some felid species or populations. Even morphologically normal sperm from these teratospe...
Importance of total motile oval count in interpreting the hamster ovum sperm penetration assay
Computer-assisted sperm analysis (CASA) sperm morphology sperm motility sperm penetration assay (SPA)
2009/2/11
A prospective study relating computer-assisted semen analysis (CASA) and technician-determined morphology to sperm penetration assay (SPA) outcome in patients with unexplained infertility or male fa...
Sperm penetration into a hyaluronic acid polymer as a means of monitoring functional competence
Sperm function tests hyaluronate polymer bovine cervical mucus hamster oocyte penetration test
2009/2/10
The diagnostic significance of sperm penetration assays based on a commercially available hyaluronate preparation (Sperm Select) has been investigated in the male partners of 77 couples characteri...
Evaluation of human sperm hyperactivated motility and its relationship with the zona-free hamster oocyte sperm penetration assay
Motility capacitation fertilizing capacity
2009/2/7
The authors studied hyperactivated motility of human spermatozoa as a method of evaluating capacitation by examining its relationship to results of zona-free hamster oocyte sperm penetration assays ...