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Response：Seasonal Variation and Age-Related Changes in Human Semen Parameters
Seasonal Variation Age-Related Changes Human Semen Parameters
2008/12/19
We thank Drs. Mendeluk and Curi for their letter regarding our recently published article, "Seasonal Variation and Age-Related Changes in Human Semen Parameters." It is interesting that they also fo...
Re：Seasonal Variation and Age-Related Changes in Human Semen Parameters
Seasonal Variation Age-Related Changes Human Semen Parameters
2008/12/19
The study of seasonal variation in human semen parameters has, in our opinion, two different aspects—individual and demographic. The first refers to the consideration of each patient by an evaluatio...
Development of an Inexpensive Artificial Vagina for Semen Collection from Rabbits
Semen collection ejaculate device
2008/12/19
The rabbit is well suited for infertility research because of the animal's size, relatively low cost, and accessibility of the genitalia. There are several studies reporting sperm count and motility...
The Use of Novel Semen Quality Scores to Predict Pregnancy in Couples With Male-Factor Infertility Undergoing Intrauterine Insemination
Overall semen quality relative quality semen pregnancy score outcome prediction
2008/12/19
The purpose of this study was to determine whether 2 new semen quality (SQ) scores could predict pregnancy in patients undergoing intrauterine insemination (IUI) for male-factor infertility and whet...
New Semen Quality Scores Developed by Principal Component Analysis of Semen Characteristics
Computer-assisted semen analysis infertility spermatozoa morphology
2008/12/19
The purpose of this study was to determine whether semen characteristics can be reduced to 2 semen quality (SQ) scores and whether these new scores can help the clinician in assessing the reproducti...
Despite its limitations, the "bulk" semen analysis remains the primary screening tools for those seeking to identify male reproductive dysfunction. In an attempt to improve its clinical utility, Guzic...
Seasonal Variation and Age-Related Changes in Human Semen Parameters
Epidemiology sperm concentration motility morphology
2008/12/19
Although semen quality has been discussed extensively with regard to age and season in the andrology literature, the results vary and firm conclusions are still outstanding. To investigate seasona...
Effect of High-Dose Liothyronine on Semen Quality and Recovery Following Withdrawal in Rabbits
Hyperthyroidism tri-iodothyronine rabbit semen libido fertility
2008/12/16
Endocrine aspects of the thyroid in the pituitary-thyroid-gonadal axis have been studied extensively, but few controlled studies have been conducted on sperm output in males with hyperthyroidism. The ...
Exogenous Protein Kinases A and C, But Not Endogenous Prostasome-Associated Protein Kinase, Phosphorylate Semenogelins I and II From Human Semen
Acid phosphatase histone prostate-specific antigen vasectomy
2008/12/15
Semenogelins I and II are the quantitatively dominating proteins in human semen. They comprise the major part of the sperm-entrapping gel formed at ejaculation, which subsequently liquefies due to pro...
Inhibition of Alkaline Phosphatase Activity of Boar Semen by Pentoxifylline, Caffeine, and Theophylline
Methyl xanthines seminal plasma spermatozoa
2008/12/15
Methyl xanthines have been used frequently as additives to sperm suspensions in order to improve sperm characteristics. The mechanism of action on spermatozoa is generally assumed to be inhibition of ...
Effect of Leukocytospermia on Sperm DNA Integrity: A Negative Effect in Abnormal Semen Samples
Sperm quality DNA integrity leukocytes oxidative stress
2008/12/15
Controversy exists over levels of DNA integrity in the sperm of fertile and infertile men. In addition, the effect of leukocytospermia on sperm DNA in these 2 groups is unclear. We decided to address ...
Optimal Power Transformations for Analysis of Sperm Concentration and Other Semen Variables
Statistics data transformation male fertility
2008/12/8
The nongaussian (or nonnormal) distribution of sperm concentration, and variables deriving from it, is a common practical problem in the statistical evaluation of semen data. Yet it has been littl...
Melatonin Administration Alters Semen Quality in Healthy Men
Estradiol seminal plasma sperm analysis testosterone
2008/12/8
The role of melatonin in the regulation of reproduction in humans is unknown. We conducted a 6-month, double-blind, crossover study of a daily treatment dose of 3 mg melatonin or placebo given orall...
Cytofluorographic Identification of Activated T-cell Subpopulations in the Semen of Men With Spinal Cord Injuries
Sperm ejaculation leukocytospermia fertility paraplegia
2008/12/5
The semen of most men with spinal cord injury (SCI) contains an abundance of leukocytes. It is not known if this leukocytospermia contributes to the abnormally low sperm motility observed in many of...
Aneuploidy and chromosome breakage in swim-up versus unprocessed semen from twenty healthy men
Aneuploidy chromosome breakage unprocessed semen twenty healthy men
2008/12/2
Toxicological and epidemiological studies have investigated several factors that are believed to induce cytogenetic damage in human sperm cells in an effort to estimate heritable risk to future gene...