The reference values for semen parameters of 1213 fertile men in Guangdong Province in China
| Autor: | Li-Xin Tang, Fang Jiang, Qi-Ling Wang, Ge Song, Weibing Qin, Shun-mei Deng, Yun-Ge Tang, Yanjia Jiang |
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| Rok vydání: | 2014 |
| Předmět: |
Adult
Male endocrine system China Urology Varicocele Semen Chinese fertile men semen parameters semen quality time-to-pregnancy Biology lcsh:RC870-923 Andrology Semen quality Animal science Reference Values medicine Humans Retrospective Studies Sperm Count urogenital system General Medicine Hydrogen-Ion Concentration Middle Aged lcsh:Diseases of the genitourinary system. Urology medicine.disease Sperm Spermatozoa Confidence interval Semen Analysis Fertility Reference values Who guidelines Sperm Motility Original Article Body mass index |
| Zdroj: | Asian Journal of Andrology Asian Journal of Andrology, Vol 17, Iss 2, Pp 298-303 (2015) |
| ISSN: | 1745-7262 |
| Popis: | Semen samples were collected from 1213 fertile men whose partners had a time-to-pregnancy (TTP) ≤12 months in Guangdong Province in Southern China, and semen parameters including semen volume, sperm concentration, total counts, motility, and morphology were evaluated according to the World Health Organization (WHO) 2010 guideline. All semen parameters analyzed were normal in ~62.2% of the total samples, whereas ~37.8% showed at least one of the semen parameters below normal threshold values. The fifth centiles (with 95% confidence intervals) were 1.3 (1.2-1.5) ml for semen volume, 20 × 10 6 (18×10 6 -20×10 6 ) ml−1 for sperm concentration, 40 × 10 6 (38×10 6 -44×10 6 ) per ejaculate for total sperm counts, 48% (47%-53%) for vitality, 39% (36%-43%) for total motility, 25% (23%-27%) for sperm progressive motility, 5.0% (4%-5%) for normal morphology. The pH values ranged from 7.2 to 8.0 with the mean ± standard deviation at 7.32 ± 0.17. No effects of age and body mass index were found on semen parameters. Occupation, smoking and alcohol abuse, varicocele appeared to decrease semen quality. Sperm concentration, but not sperm morphology, is positively correlated with TTP, whereas vitality is negatively correlated with TTP. Our study provides the latest reference values for the semen parameters of Chinese fertile men in Guangdong Province, which are close to those described in the new WHO guidelines (5 th Edition). |
| Databáze: | OpenAIRE |
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