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The sperm chromatin structure assay. Relationship with alternate tests of semen quality and heterospermic performance of bulls
sperm chromatin structure assay alternate tests semen quality heterospermic performance
2009/2/23
Data obtained by the sperm chromatin structure assay (SCSA) on spermatozoa from nine bulls were correlated with fertility, measured by heterospermic performance (-0.94, P less than 0.01) and by al...
Computerized videomicrographic analysis of rat sperm motility
Computerized videomicrographic analysis rat sperm motility
2009/2/23
Quantitative methods for the determination of the concentration, percent motility and swimming speed of human and animal spermatozoa can assist in the objective analysis of sperm and semen quality. ...
Reversibility of long-term effects of GnRH agonist administration on testicular histology and sperm production in the nonhuman primate
GnRH agonist LH testosterone testis morphology electron microscopy monkeys
2009/2/23
The present investigation evaluates the long-term effects of GnRH agonist treatment on testicular histology, sperm production and the subsequent recovery of these parameters. Four adult rhesus monke...
Relationship of human sperm acrosin and proacrosin to semen parameters. II. Correlations
human sperm acrosin semen parameters
2009/2/23
Previous results, simultaneously confirmed by others, suggest that a relationship exists between sperm acrosin levels and fertility in man. The assessment of sperm acrosin may therefore be a useful ...
Quantification of bovine sperm separation by a swim-up method. Relationship to sperm motility, integrity of acrosomes, sperm migration in polyacrylamide gel and fertility
Quantification bovine sperm separation swim-up method
2009/2/23
The number of bovine spermatozoa separated in a swim-up procedure was quantified using an electronic cell counter. In an initial test of the swim-up procedure, non-frozen sperm samples with differen...
Comparison between proteinases of human seminal plasma and of sperm origin
proteinases human seminal plasma sperm origin
2009/2/23
A comparison of the alkaline proteinase activity of human seminal plasma, the seminal non-gamete cellular material and spermatozoa was made by gelatin-sodium dodecyl sulfate-polyacrylamide gel elect...
Modification of the rat sperm flagellar plasma membrane during maturation in the epididymis
Modification rat sperm flagellar plasma membrane maturation epididymis
2009/2/23
Previously, we demonstrated that surface radiolabeling of rat epididymal spermatozoa by lactoperoxidase-catalyzed iodination reveals a major component with an apparent molecular weight of 26,000 to ...
Further characterization of a secreted epididymal glycoprotein in mice that binds to sperm tails
Further characterization secreted epididymal glycoprotein mice sperm tails
2009/2/23
Sperm maturation antigen 4 (SMA-4) is a surface component of the mouse sperm tail. Previously, immunofluorescence studies indicated that SMA-4 may be secreted by principal cells of the distal caput ...
Evidence for a role of cyclooxygenase（prostaglandin synthetase）and prostaglandins in the sperm acrosome reaction and fertilization
spermatozoa fertilization acrosome reaction cyclooxygenase prostaglandin inhibitor
2009/2/23
Three cyclooxygenase (prostaglandin synthetase) inhibitors, indomethacin, phenylbutazone, and oxyphenbutazone, decreased fertilization in vitro when mixed with capacitated mouse spermatozoa before a...
Correlation between in vitro fertilization and human sperm density and motility
Correlation fertilization human sperm density motility
2009/2/23
The conventional sperm characteristics of density (millions per milliliter) and motility, scored in a semi-subjective way, were correlated with results of an on-going in vitro fertilization and em...
Nitrocellulose and polyvinyl coatings prevent sperm adhesion to glass without affecting the motility of intact and demembranated human spermatozoa
Nitrocellulose polyvinyl coatings sperm adhesion glass without
2009/2/23
The effectiveness of several glass coating agents in preventing sperm adherence to glass surfaces for both intact and demembranated human spermatozoa was investigated. These agents included bovine s...
Improvement in the quality and fertilization potential of a human sperm population using the rise technique
fertilization potential human sperm population rise technique
2009/2/23
Semen from 63 individuals participating in an in vitro fertilization program was processed using a modified rise technique. Overall normal morphology was significantly improved in the rise (79.2%) as ...
Repair of experimental varicoceles in the rat. Long-term effects on testicular blood flow and temperature and cauda epididymidal sperm concentration and motility
varicocele varicocele repair rat testis
2009/2/23
The effects of varicocele and varicocele repair on testicular blood flow, temperature, sperm counts, and sperm motility were assessed in adult male rats. The duration of the experimental varicocele ...
Heterogeneity of sperm density profiles following 16-week therapy with continuous infusion of high-dose LHRH analog plus testosterone
sperm density profiles 16-week therapy high-dose LHRH testosterone
2009/2/23
LHRH agonist analogs have been investigated as potential male contraceptives. It has been shown that the LHRH agonistic analog [D-Trp6,Pro9-NEt] LHRH (LHRHA) given to men in single doses up to 500 m...
The presence of a motility inhibitor within spermatozoa may explain the poor sperm motility of some infertile men
motility inhibitor spermatozoa poor sperm motility infertile men
2009/2/23
The presence of motility inhibitors in seminal plasma and within spermatozoa from control and infertile men with poor sperm motility was investigated using demembranated reactivated human spermatozo...