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Relationship of Cytoplasmic Droplets to Motility, Migration in Mucus, and Volume Regulation of Human Spermatozoa
Fathers mucus penetration sperm swelling semen analysis diagnosis
2008/12/23
A significantly greater percentage of motile than immotile spermatozoa bore droplets at the osmolality of semen and cervical mucus. The percentage of spermatozoa with droplets was not signific...
Effects of Chemotherapeutic Agents for Testicular Cancer on the Male Rat Reproductive System, Spermatozoa, and Fertility
cis-Platinum etoposide bleomycin testis epididymis progeny outcome flagellar defect
2008/12/23
Testicular cancer is the most common cancer affecting men of reproductive age. Advances in treatment of the disease, which include the coadministration of bleomycin, etoposide, and cis-platinum (B...
High Incidence of Chromosomal Abnormalities in Large-Headed and Multiple-Tailed Spermatozoa
Chromosomal Abnormalities Large-Headed Multiple-Tailed Spermatozoa
2008/12/23
To date, several studies of aneuploidy rate in spermatozoa from infertile men have been published. Most of them found an increase incidence of aneuploid spermatozoa in infertile patients compared wi...
Severe Hypospermatogenesis in Cases of Nonobstructive Azoospermia：Should We Use Fresh or Frozen Testicular Spermatozoa?
Testicular sperm extraction fertilization implantation IVF-ICSI
2008/12/23
The aim of this comparative clinical study was to examine whether the fertilizing potential of frozen-thawed testicular sperm in the most severe cases of hypospermatogenesis is reduced compared with...
Supplementation of the Thawing Media With Reduced Glutathione Improves Function and the In Vitro Fertilizing Ability of Boar Spermatozoa After Cryopreservation
Pig spermatozoa oxidative stress IVF capacitation status
2008/12/23
In this study, we evaluated the effects of glutathione (L-g-glutamyl-L-cysteinylglycine; GSH) supplementation of the thawing extender on semen parameters to compensate for the decrease in GSH conten...
A Cyclic Adenosine 3',5'-Monophosphate Stimulates Phospholipase C1-Calcium Signaling via the Activation of Tyrosine Kinase in Boar Spermatozoa
Sperm cAMP SYK PLC calcium store
2008/12/23
The aim of this study was to reveal a downstream part of the intracellular signaling that is mediated by cyclic adenosine monophosphate (cAMP)-dependent tyrosine kinases, including spleen tyrosine (...
Nonprotein Thiols and Disulfides in Rat Epididymal Spermatozoa and Epididymal Fluid：Role of -Glutamyl-Transpeptidase in Sperm Maturation
Glutathione/glutathione disulfides cysteine/cysteine disulfides nonprotein mixed disulfides nonprotein-protein mixed disulfides sperm oxidative pathways
2008/12/23
Sperm thiol oxidation during sperm maturation is important for sperm component stabilization, the acquisition of sperm motility, and fertilizing ability. A correct degree of oxidation is required, s...
The Motility of Epididymal or Testicular Spermatozoa Does Not Directly Affect IVF/ICSI Pregnancy Outcomes
Azoospermia infertility epididymal sperm testicular sperm
2008/12/23
Our objective was to determine whether the presence of motility in surgically obtained sperm samples improves fertilization and pregnancy rates for patients undergoing in vitro fertilization/intracy...
Kinematic Changes During the Cryopreservation of Boar Spermatozoa
Kinematic parameters sperm subpopulations pig
2008/12/23
The present study evaluates the effect that various steps of a conventional cycle of cryopreservation have on the patterns of movement exhibited by boar spermatozoa. Sperm-rich ejaculate fractions c...
Immunocytochemical Localization and Biochemical Characterization of Two Seminal Plasma Proteins That Protect Ram Spermatozoa Against Cold Shock
Immunocytochemistry capacitation acrosome reaction
2008/12/23
We have already shown that seminal plasma proteins in the ram can repair cold-shock sperm membrane damage and that the addition of seminal plasma proteins before cold-shock treatment prevents sperm ...
Chimpanzee（Pan troglodytes）Spermatozoa Osmotic Tolerance and Cryoprotectant Permeability Characteristics
Cryopreservation membrane permeability
2008/12/23
Osmotic properties of chimpanzee spermatozoa were studied at 22°C. An electronic particle counter was used to determine the isosmotic cell volume, and the volume response after exposure to four comm...
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...
Effects of Various Extenders and Permeating Cryoprotectants on Cryopreservation of Cynomolgus Monkey（Macaca fascicularis）Spermatozoa
Sperm freezing motility plasma membrane acrosome permeability coefficient
2008/12/23
The cryoprotective effects of 11 different extenders, TTE, DM, mDM, LG-DM, G-DM, TCG, TEST, TSM, Test-M, Test-H, and LM, on sperm cryopreservation of cynomolgus monkey (Macaca fascicularis) have bee...
Primary Flagellar Abnormality Is Associated With an Increased Rate of Spermatozoa Aneuploidy
Chromosome abnormalities FISH flagellum male infertility sperm
2008/12/22
The frequencies of aneuploid and diploid spermatozoa were determined in 3 patients presenting a complete asthenozoospermia due to a primary and specific flagellar anomaly: patients 1 and 2 presented...
Survival and In Vitro Fertility of Boar Spermatozoa Frozen in the Presence of Superoxide Dismutase and/or Catalase
Antioxidants cryopreservation sperm porcine
2008/12/22
In the present study the potential benefit of reactive oxygen species (ROS)-scavenging enzymes superoxide dismutase (SOD) and catalase (CAT) when cryopreserving boar spermatozoa was evaluated. Poole...