搜索结果: 61-75 共查到“性科学 semen”相关记录118条 . 查询时间(0.286 秒)
Variation in semen parameters derived from computer-aided semen analysis, within donors and between donors
Concentration longitudinal study motility statistical
<
2008/12/29
The development of computer-aided semen analysis (CASA) has made it possible to study sperm motility characteristics objectively and longitudinally. In this 2-year study of 8 sperm donors, we used C...
Semenogelin, the main protein of semen coagulum, inhibits human sperm capacitation by interfering with the superoxide anion generated during this process
Protein tyrosine phosphorylation prostate-specific antigen
<
2008/12/29
Semenogelin (Sg), the major protein of the human semen coagulum, is present at high concentrations in seminal vesicle secretions. It is degraded by the prostate-specific antigen (PSA) to generate pe...
Morphologically distinct sperm subpopulations defined by Fourier shape descriptors in fresh ejaculates correlate with variation in boar semen quality following cryopreservation
sperm subpopulations Fourier shape descriptors fresh ejaculates boar semen quality
<
2008/12/26
This study investigated two hypotheses: 1) that consistent between-boar variation in frozen semen quality exists and is genetically determined, and 2) that morphologically distinct subpopulations...
Semen characteristics of the captive Indian leopard, Panthera pardus
Semen characteristics captive Indian leopard Panthera pardus
<
2008/12/26
Semen samples from 11 Indian leopards (Pantherapardus) from 3 different zoos in India were collected by electroejaculation. A computer-aided semen analyzer (CASA) was used for assessing the quality ...
Sperm calcium levels and chlortetracycline fluorescence patterns are related to the in vivo fertility of cryopreserved bovine semen
Sperm calcium levels chlortetracycline vivo fertility cryopreserved bovine semen
<
2008/12/25
Cryopreserved bovine semen is less fertile than fresh semen for reasons that have not been fully elucidated. Cryopreservation is known to disrupt the sperm plasma membrane and it induces premature c...
Correlation between clusterin-positive spermatozoa determined by flow cytometry in bull semen and fertility
Correlation clusterin-positive spermatozoa cytometry bull semen fertility
<
2008/12/25
The objectives were to 1) develop a rapid and accurate method for detection of clusterin-positive spermatozoa (CPS) in bull semen and 2) determine the utility of incidence of CPS for prediction of f...
High catalase content of rabbit semen appears to be inherited
High catalase rabbit semen inherited
<
2008/12/25
Reactive oxygen species, as hydrogen peroxide, can be damaging to sperm. Most species have little protective catalase in their semen, but rabbit semen contains substantial amounts of catalase. The...
Evaluation of a container for collection and shipment of semen with potential uses in population-based, clinical, and occupational settings
Evaluation container collection and shipment of semen population-based clinical occupational settings
<
2008/12/25
Large, population-based studies of semen quality are encumbered by the logistics and expense of obtaining semen samples from men who live in a variety of locations. A prototype semen collection and ...
Semen quality and human fertility：a prospective study with healthy couples
Semen quality human fertility prospective study healthy couples
<
2008/12/25
Measures of semen quality are used as surrogate measures of male fertility in clinical andrology, reproductive toxicology, epidemiology, and risk assessment. However, only limited data are av...
DNA integrity in human spermatozoa：relationships with semen quality
DNA integrity human spermatozoa relationships semen quality
<
2008/12/25
The literature contains conflicting evidence regarding the existence of DNA damage in spermatozoa from infertile male patients. To examine this phenomenon, we have studied ejaculated spermatozoa fro...
DNA integrity in human spermatozoa：relationships with semen quality
DNA integrity human spermatozoa relationships semen quality
<
2008/12/26
The literature contains conflicting evidence regarding the existence of DNA damage in spermatozoa from infertile male patients. To examine this phenomenon, we have studied ejaculated spermatozoa from ...
Development of Normal Reference Values for Seminal Reactive Oxygen Species and Their Correlation With Leukocytes and Semen Parameters in a Fertile Population
Oxidative stress male infertility Endtz test spermatozoa standardization
<
2008/12/24
Although reactive oxygen species (ROSs) are clearly implicated in the pathogenesis of male infertility, few studies have attempted to define the basal levels of ROSs in fertile men. Levels of ROS...
Late Hormonal Levels, Semen Parameters, and Presence of Antisperm Antibodies in Patients Treated for Testicular Torsion
Infertility function testis
<
2008/12/24
In spite of prompt diagnosis and either orchiectomy or preservation of the affected testis, infertility remains a significant sequel to testicular torsion. The objective of this study was to e...
Filling Time of a Lamellar Capillary-Filling Semen Analysis Chamber Is a Rapid, Precise, and Accurate Method to Assess Viscosity of Seminal Plasma
Lamellar Capillary-Filling Semen Analysis Precise Accurate Method Seminal Plasma
<
2008/12/24
Among men from infertile couples, increased viscosity of the ejaculate has been reported to occur more frequently than in fertile men (Moon and Bunge, 1968; Bunge, 1970). During standard semen analysi...
Regional Variations in Semen Quality of Community-Dwelling Young Men From Flanders Are Not Paralleled by Hormonal Indices of Testicular Function
FSH inhibin B spermatogenic arrest sperm quality T:LH ratio
<
2008/12/24
Epidemiological studies of sperm quality are hampered by problems such as low participation rates and poor comparability of results due to methodological differences in semen analysis. More ob...