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Evaluation of computerized analysis of sperm movement characteristics and differential sperm tail swelling patterns in predicting human sperm in vitro fertilizing capacity
sperm movement characteristics differential sperm tail predicting human sperm
2009/2/23
Multivariate discriminant analysis was used to evaluate the usefulness of computer image analysis of sperm movement characteristics and differential patterns of sperm tail swelling after hypoosmot...
Sperm morphology assessment as an indicator of human fertilizing capacity
Sperm morphology assessment indicator human fertilizing capacity
2009/2/19
Semen samples from 95 men were examined by routine semen analysis and specific histologic staining for sperm morphology. The men were classified into fertile and infertile groups on the basis of cli...
Hexokinase present in human sperm is not tyrosine phosphorylated but its antibodies affect fertilizing capacity
Hexokinase human sperm fertilization infertility
2009/2/16
The present study was conducted to investigate the presence of hexokinase in human sperm cell, its subcellular localization, its modulation and role in capacitation/acrosome reaction, and tyrosine...
Hemizona index（HZI）demonstrates excellent predictability when evaluating sperm fertilizing capacity in in vitro fertilization patients
IVF predictability Hemizona assay IVF
2009/2/12
The objective of this work was to assess the power of the hemizona assay to predict in vitro fertilization (IVF) results using receiving operating characteristics (ROC) analysis. In a tertiary medical...
Interleukin-6 enhances the fertilizing capacity of human sperm by increasing capacitation and acrosome reaction
Interleukin-6 enhances human sperm acrosome reaction
2009/2/12
The effects of human recombinant interleukin-6 (IL-6) on human sperm penetration of zona-free hamster ova (SPA) and human sperm cell capacitation and acrosome reaction were investigated. IL-6 at h...
Prenatal exposure to dexamethasone alters Leydig cell steroidogenic capacity in immature and adult rats
Testis neuroendocrine luteinizing hormone testosterone
2008/12/29
This study examines the effects of prenatal exposure to dexamethasone (DEX) on postnatal testosterone production in male rats. Pregnant female rats were treated on gestation days 14-19 with DEX (1...
Impaired seminal antioxidant capacity in human semen with hyperviscosity or oligoasthenozoospermia
Superoxide dismutase catalase total antioxidant status
2008/12/29
Antioxidant capacity of seminal plasma was evaluated in 120 semen samples subdivided into asthenozoospermic and oligoasthenozoospermic specimens with normal consistency and into asthenozoospermic an...
Altered protamine 2 expression is uncommon in donors of known fertility, but common among men with poor fertilizing capacity, and may reflect other abnormalities of spermiogenesis
Semen sperm chromatin fertilization IVF infertility
2008/12/29
During the spermatid elongation stage of spermiogenesis approximately 85% of sperm nuclear histones are replaced by protamines. Protamines increase the packing ratio of sperm chromatin, presumably fac...
Spermatozoa Have Decreased Antioxidant Enzymatic Capacity and Increased Reactive Oxygen Species Production During Aging in the Brown Norway Rat
Oxidative stress epididymis glutathione peroxidase superoxide dismutase reproduction sperm
2008/12/24
As the proportion of aged males attempting to reproduce continues to rise, so does the concern regarding the quality of spermatozoa from aged men. An imbalance between the generation of reacti...
Use of a GnRH Agonist and hCG to Obtain an Index of Testosterone Secretory Capacity in the Koala（Phascolarctos cinereus）
Marsupial hormone stimulation test
2008/12/24
Testosterone secretion in mammals typically occurs in random pulses such that a single blood sample provides limited information on reproductive endocrine status. However, it has been shown in sever...
Restoration of Erectile Capacity in Normotensive Aged Rats by Modulation of Angiotensin Receptor Type 1
Erectile dysfunction Sprague-Dawley rat losartan
2008/12/23
We investigated the effects of systemic modulation of angiotensin 2 on the erectile dysfunction of aged rats. Young and aged (18 months old) male Sprague-Dawley rats were either treated with daily a...
Involvement of A1 Adenosine Receptors in the Acquisition of Fertilizing Capacity
A1 adenosine receptors KO mice A1 adenosine receptors mouse sperm localization capacitation caffeine fertility
2008/12/22
Ejaculated mammalian spermatozoa acquire competence to fertilize oocytes by a two-step process: capacitation followed by acrosome reaction. The biochemical and biophysical modifications occurring ...
Seminal Antioxidant Capacity in Pre- and Postoperative Varicocele
Infertility reactive oxygen species seminal plasma spermatozoa
2008/12/22
In order to explore the impact of surgical treatment on antioxidant defense system in varicocele (VAR), we evaluated seminal total antioxidant capacity (TAC) in 25 patients affected by VAR, in 14 pa...
Enhanced Chemiluminescence Assay vs Colorimetric Assay for Measurement of the Total Antioxidant Capacity of Human Seminal Plasma
Luminometer semen spectrophotometer Trolox reactive oxygen species
2008/12/19
Although the enhanced chemiluminescence assay is commonly used to measure the nonenzymatic total antioxidant capacity (TAC) of the human seminal plasma, it is cumbersome, expensive, and time-consu...
Education, Research Training, and Capacity Building: Program in Human Sexuality Studies at San Francisco State University
Program in Human Sexuality Studies San Francisco State University Education Research Training
2008/6/23
Since l970 the Program in Human Sexuality Studies at San Francisco State
University has pioneered higher education and research in a field that was
previously tabooed and marginalized in much of Ame...