Changes of semen parameters in Chinese fertile men in the past 25 years / 中华男科学杂志
National Journal of Andrology
;
(12): 775-778, 2008.
Artigo
em Chinês
| WPRIM
| ID: wpr-309796
ABSTRACT
<p><b>OBJECTIVE</b>To analyze the changes of seminal parameters in Chinese fertile men during the past 25 years.</p><p><b>METHODS</b>We collected semen samples from 5,834 fertile men in 14 different provinces (including Beijing) between 1980 and 2005 and retrospectively studied their seminal parameters, abstinence durations and total testis volumes by meta-analysis.</p><p><b>RESULTS</b>Compared with the first 15 years, a significant decrease was observed in both sperm density and total number of sperm per ejaculate in the semen samples collected between 1996-2000 (P < 0.0001 and P < 0.05), but not obvious in those between 1996-2000 and after 2005 (P > 0.05). As for sperm motility, no time-related changes were noted (P > 0.05) except a reduction with the increase of age.</p><p><b>CONCLUSION</b>There was a decline in sperm density and total number of sperm per ejaculate in Chinese fertile men over the past 25 years, although not significant in the latter 10 years since 1996, but with no time-related changes in sperm motility.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Sêmen
/
Contagem de Espermatozoides
/
Motilidade dos Espermatozoides
/
China
/
Estudos Retrospectivos
/
Fertilidade
Tipo de estudo:
Estudo observacional
Limite:
Adulto
/
Humanos
/
Masculino
País/Região como assunto:
Ásia
Idioma:
Chinês
Revista:
National Journal of Andrology
Ano de publicação:
2008
Tipo de documento:
Artigo
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