检索结果-南通市图书馆

Principal Component Analysis on Semen Quality among Chinese Young Men

Journal of Reproduction and Contraception 2003年第1期14卷 55-63页

作者： Jun-qingWU Er-shengGAO Jian-guoTAO Cui-lingLIANG WenyingLI Qiu-yingYANG Kang-shouYAO Wei-qunLU LuCHEN Fudanuniversity Shanghai200032China ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China ZhejiangInstituteofPlannedParenthoodResearch l-langzhou310012China guizhouinstituteofplannedparenthoodresearch Guiyang550004China QingdaoInstituteofPlannedParenthoodResearch Qingdao255071China

Objective To understand the current semen quality status among Chinese young men and influential factors in China and to explore its evaluation index. Methods A total of 562 healthy male volunteers were recruited during their premarital examinations in seven provincials and municipal regions' MCH centers; descriptive and principal component analyses were used to analyze data.Results The findings show that semen volume (2. 61± 1. 10 mL), sperm density (64. 47× 34. 59× 106/mL), percentage of sperm forward progression (59. 89%± 17. 11%), percentage of sperm viability (77. 19% ± 11. 87%), and percentage of normal sperm morphology ( 78. 23% ± 9. 15% ). The first principal component function is Z1= -8.512 54 + 0. 001 35X1' + 0. 031 92X2'+0. 043 52X3'+ 0. 039 84X4', which is closely related to percentage of sperm viability (X3), percentage of sperm forward progression (X2), and percentage of normal sperm morphology (X4)The second principal component function is: Z2= 0. 491 92+ 0. 080 80X1- 0. 000 58X2-0. 005 10X3- 0. 018 07X4, which depends on the total sperm count (X1). Conclusion Only 42. 3% subjects meet all the common WHO standard of semen quality. The multiple analysis of Z1 showed that the highest Z1 are among subjects from Guizhou,workers, or town residents. Multiple analysis of Z2 showed that the older age when the subjects had the first sexual impulse, the longer period of sexual abstinence and more quantity of sperm they had; the more sexual activity subjects had, the less amount of sperm they had.

关键词： young men semen quality principal component analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Canonical Correlation Analysis on Semen Quality and Serum Heavy Metals in Chinese Young Men

引用

Journal of Reproduction and Contraception 2003年第2期14卷 119-128页

作者： Jun-qingWU Cui-lingLIANG Er-shengGAO Jian-guoTAO Qiu-yingYANG XiaoXU Wen-juanCAI JianGUO FengTANG JiangZHU Zhan-haiFU Yin-meiDU FudanUniversity shanghai200032China ShanghaiInstituteofPlannedParenthoodResearch Shanghai200032China HenanInstituteofPlannedParenthoodResearch Zhengzhou450003China HeibeiInstituteofPlannedParenthoodResearch Shijiazhuang050025China ShanxiInstituteofPlannedParenthoodResearch Xi＇an030006China ZhejiangInstituteofPlannedParenthoodResearch Hangzhou310012China guizhouinstituteofplannedparenthoodresearch Guiyang550004China QingdaoInstituteofPlannedParenthoodResearch Qingdao266071China TaiyuanCentersforDiseaseControlandPrevention Taiyuan030001China

Objective To explore the correlation between serum, heavy metal and semen quality in normal Chinese young menMethods This study was designed as a multi-center cross-sectional investigation. The subjects consisted of 562 male vomunteers who had undergone premarital physical examination in maternal and children health centers in 7 provinces in China. Results Results from Spearman rank correlation analysis (partial variable: region) show that serum lead and cadmium are negatively related to percentage of morphological normal sperm, but canonical correlation between semen quality and serum heavy metal are not significant. Canonical correlation analysis among the subjects from Guizhou shows cadmium is harmful to sperm morphology. In Henan, furthermore, results show lead and cadmium could negatively affect sperm viability and morphology. Conclusion Among all study subjects, canonical correlation between semen quality and serum heavy metal were not significant; however, results in some region showed serum cadmium and lead might be harmful to sperm quality.

关键词： semen quality heavy metal canonical correlation serum lead serum cadmium

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：