搜索结果: 16-30 共查到“性医学 motility”相关记录80条 . 查询时间(0.093 秒)
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...
Origin of a motility inhibitor within the male reproductive tract
motility inhibitor male reproductive tract
2009/2/20
Seminal plasma contains a motility inhibitor of demembranated reactivated spermatozoa. We investigated its origin within the reproductive tract. The highest level of inhibitor was detected in semina...
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...
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...
A Comparison of Subjective and Objective Sperm Motility Evaluation
sperm motility statistical comparison computer analysis
2009/2/19
A series of semen samples that had been recorded on motion picture film, then evaluated via standard visual techniques by a number of well established fertility clinics (Van Duijn et al (1971)), w...
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 ...
Sperm Motility and Histomorphometry of the Testis of the Genetically Obese Zucker Rat
Zucker rat testis sperm
2009/2/19
The reproductive system of male obese Zucker rats was studied to determine whether there are abnormalities in testis composition, organ weights, or sperm motility, which might contribute to their se...
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...
Effect of acute androgen withdrawal by GnRH antagonist on epididymal sperm motility and morphology in the cynomolgus monkey
acute androgen withdrawal GnRH epididymal sperm motility
2009/2/18
Hormonal male contraception requires an induction phase before azoospermia and contraceptive safety are achieved. The nature of spermatozoa that may be ejaculated during this induction phase was s...
Motility potential of macaque epididymal sperm: the role of protein phosphatase and glycogen synthase kinase-3 activities
Monkey spermatozoa enzymes caput caudal
2009/2/18
Human and monkey ejaculated sperm contain protein phosphatase-1 (PP1), PP1 inhibitor 2 (12), and glycogen synthase kinase-3 (GSK-3). Inhibition of ejaculated human sperm protein phosphatase (PP) a...
Sperm motility enhancement by nitric oxide produced by the oocytes of fathead minnows, Pimephelas promelas
Fertilization CASA electron spin resonance oocyte
2009/2/18
The effects of nitric oxide (NO) on sperm motility were examined in the fathead minnow, Pimephelas promelas, using computer-assisted sperm analysis (CASA). The observed effects underscore the dual n...
Mullerian inhibiting substance improves longevity of motility and viability of fresh and cryopreserved sperm
motility and viability fresh and cryopreserved sperm
2009/2/18
Mullerian inhibiting substance (MIS) is a hormone present in seminal plasma, but its role is unknown. In this study, the effects of MIS on sperm survival in fresh and cryopreserved specimens were in...
Influence of centrifugation regimes on motility, yield, and cell associations of mouse spermatozoa
Cryopreservation mechanical sensitivity damage recovery
2009/2/17
Mouse sperm are exceptionally sensitive to mechanical forces associated with pipetting and mixing. This characteristic raised the question of the sensitivity of mouse sperm to centrifugation, a st...