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 5...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.展开更多
Objective:To understand the influence of personal hygiene behaviors on reproductive tract infections (RTIs) and to provide evidence for the intervention among married women at childbearing age Methods:A total of 1 631...Objective:To understand the influence of personal hygiene behaviors on reproductive tract infections (RTIs) and to provide evidence for the intervention among married women at childbearing age Methods:A total of 1 631 married women in 60 residence neighborhoods from 4 streets and 2 stagnant enterprises were selected by multistage cluster random sampling and interviewed face-to-face through questionnaires, laboratory tests assay and gynecological examination. All data were analyzed by SAS 8.2. Results:The positive detection rates of five target pathogens, trichomonas vaginalis, candida albicans, G.vaginalis, chlamydia trachomatis and Neisseria gonorrhoeae, in the study were 3.04%, 5.04%, 1.52%, 6.68%, and 0.12%, respectively. Personal hygiene practices and sexual behaviors among married women in the study were good in general. The vast majority of women (98.77%) rinsed their vulvae every day and more than half of the women (53.03%) took bath every day. In terms of the prevalence of endogenous infection, there were statistical differences between women who had different frequencies of rinsing their vulvae and taking bath; and for the prevalence of sexually transmitted infection, there were significant differences between women whose husband had different frequency of washing their external genital organs before sexual intercourses each time. The mostly adopted contraceptive methods among women ranked by frequency were intra-uterine devices (IUD) (68.69%), male condom (16.69%) and safe period (6.20%), among which male condom could prevent sexually transmitted infections. Multiple logistic regression analyses indicated that the frequency of taking bath, the husband washing his external genital organ before sexual intercourse and the age of marriage were the influencing factors of RTIs, too. Conclusion:It is very urgent that health educational intervention of RTIs among married women be conducted and especially the knowledge on condom's double effects on contraception and prevention of RTIs be disseminated to urge women to practice hygiene behavior to achieve the aim of preventing RTIs.展开更多
Aim: To investigate the impact of organophosphorous pesticide exposure and other risk factors on the semen quality of Chinese peasants. Method: Questionnaire investigation, external genital examination and laboratory ...Aim: To investigate the impact of organophosphorous pesticide exposure and other risk factors on the semen quality of Chinese peasants. Method: Questionnaire investigation, external genital examination and laboratory examination were conducted on 322 male peasants, including the exposed and the control groups of 161 subjects each. Results: Multivariate analysis showed that the educational level and the years of alcohol drinking influenced the semen volume. Compared with subjects of primary school education or lower, those with junior high school education had a higher semen volume (OR=1.961). Proportion of subjects with higher semen volume decreased with increased years of alcohol drinking (OR=0.962). Organophosphorous pesticide exposure decreased the number of forward progression sperm (OR=0.528), the sperm density (OR=0.266), the sperm viability (OR=0.398) and the percentage of normal morphology sperm (OR=0.281). A possible relationship was present between the season of semen collection and the number of forward progression sperm, sperm viability and percentage of normal morphology sperm. Compared with the summer data, the above three indices were higher in winter (OR being 2. 272, 4.060 and 5.249, respectively). Conclusion: Exposure to organophosphorous pesticide could damage the semen quality of the peasants. Education and alcohol drinking also affect the semen quality.展开更多
Aim: To investigate the effect of air-conditioner exposure on semen quality. Methods: The data came from the healthy male volunteers, aged 22 to 30 years, who went to centers for maternity and children health for prem...Aim: To investigate the effect of air-conditioner exposure on semen quality. Methods: The data came from the healthy male volunteers, aged 22 to 30 years, who went to centers for maternity and children health for premarital physical examination in Shanghai, Henan, Zhejiang and Hebei from December 1998 to February 2000. The sampling size is 304. Results: Among the subjects, 90 (29.6 %) had air-conditioner at home and the rest did not. X2-test and multiple logistic regression analyses showed that, the difference between the exposure and control groups was statistically significant in semen volume, sperm density and proportion of sperm with normal morphology. The three indexes were lower in the exposure group. Conclusion: Air-conditioner exposure possibly influences the semen quality.展开更多
Objective To investigate the impact of organophorous pesticide exposure on semen quality and other risk factors of semen quality Method Questionnaire investigation, external genital examination and laboratory exam...Objective To investigate the impact of organophorous pesticide exposure on semen quality and other risk factors of semen quality Method Questionnaire investigation, external genital examination and laboratory examination of semen quality were conducted on 322 subjects, who were divided into exposed and control group, each consisting of 161 subjects. Results Multivariate analysis showed that educational level and years of alcohol drinking had effect on semen volume. Compared with subjects with primary school education or lower, those with junior high school education had higher value of semen volume(OR=1.961). Proportion of subjects with high semen volume decreased with the increasing years of alcohol drinking (OR=0.962). Organophosphorous pesticide exposure could result in the decline of the number of sperms with progressive forward progression (OR=0.528), figure of semen density (OR=0.266), semen viability (OR=0.398) and percentage of normal sperm morphology (OR=0.281). There are possible relationships between the season of semen collection and the number of sperms with progressive forward progression, semen viability and percentage of normal sperm morphology . Compared to summer, values of the above three indices would be higher in winter (OR was 2.272, 4.060 and 5.249, respectively). Conclusion Exposure to organophosphorous pesticide could result in the deterioration of semen quality of the peasants.展开更多
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 duri...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.展开更多
文摘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.
基金supported by Shanghui Poprulution and Family Planming Committee, Population and Family Plunning Committee of Xuhui District and MCH Center.
文摘Objective:To understand the influence of personal hygiene behaviors on reproductive tract infections (RTIs) and to provide evidence for the intervention among married women at childbearing age Methods:A total of 1 631 married women in 60 residence neighborhoods from 4 streets and 2 stagnant enterprises were selected by multistage cluster random sampling and interviewed face-to-face through questionnaires, laboratory tests assay and gynecological examination. All data were analyzed by SAS 8.2. Results:The positive detection rates of five target pathogens, trichomonas vaginalis, candida albicans, G.vaginalis, chlamydia trachomatis and Neisseria gonorrhoeae, in the study were 3.04%, 5.04%, 1.52%, 6.68%, and 0.12%, respectively. Personal hygiene practices and sexual behaviors among married women in the study were good in general. The vast majority of women (98.77%) rinsed their vulvae every day and more than half of the women (53.03%) took bath every day. In terms of the prevalence of endogenous infection, there were statistical differences between women who had different frequencies of rinsing their vulvae and taking bath; and for the prevalence of sexually transmitted infection, there were significant differences between women whose husband had different frequency of washing their external genital organs before sexual intercourses each time. The mostly adopted contraceptive methods among women ranked by frequency were intra-uterine devices (IUD) (68.69%), male condom (16.69%) and safe period (6.20%), among which male condom could prevent sexually transmitted infections. Multiple logistic regression analyses indicated that the frequency of taking bath, the husband washing his external genital organ before sexual intercourse and the age of marriage were the influencing factors of RTIs, too. Conclusion:It is very urgent that health educational intervention of RTIs among married women be conducted and especially the knowledge on condom's double effects on contraception and prevention of RTIs be disseminated to urge women to practice hygiene behavior to achieve the aim of preventing RTIs.
文摘Aim: To investigate the impact of organophosphorous pesticide exposure and other risk factors on the semen quality of Chinese peasants. Method: Questionnaire investigation, external genital examination and laboratory examination were conducted on 322 male peasants, including the exposed and the control groups of 161 subjects each. Results: Multivariate analysis showed that the educational level and the years of alcohol drinking influenced the semen volume. Compared with subjects of primary school education or lower, those with junior high school education had a higher semen volume (OR=1.961). Proportion of subjects with higher semen volume decreased with increased years of alcohol drinking (OR=0.962). Organophosphorous pesticide exposure decreased the number of forward progression sperm (OR=0.528), the sperm density (OR=0.266), the sperm viability (OR=0.398) and the percentage of normal morphology sperm (OR=0.281). A possible relationship was present between the season of semen collection and the number of forward progression sperm, sperm viability and percentage of normal morphology sperm. Compared with the summer data, the above three indices were higher in winter (OR being 2. 272, 4.060 and 5.249, respectively). Conclusion: Exposure to organophosphorous pesticide could damage the semen quality of the peasants. Education and alcohol drinking also affect the semen quality.
文摘Aim: To investigate the effect of air-conditioner exposure on semen quality. Methods: The data came from the healthy male volunteers, aged 22 to 30 years, who went to centers for maternity and children health for premarital physical examination in Shanghai, Henan, Zhejiang and Hebei from December 1998 to February 2000. The sampling size is 304. Results: Among the subjects, 90 (29.6 %) had air-conditioner at home and the rest did not. X2-test and multiple logistic regression analyses showed that, the difference between the exposure and control groups was statistically significant in semen volume, sperm density and proportion of sperm with normal morphology. The three indexes were lower in the exposure group. Conclusion: Air-conditioner exposure possibly influences the semen quality.
文摘Objective To investigate the impact of organophorous pesticide exposure on semen quality and other risk factors of semen quality Method Questionnaire investigation, external genital examination and laboratory examination of semen quality were conducted on 322 subjects, who were divided into exposed and control group, each consisting of 161 subjects. Results Multivariate analysis showed that educational level and years of alcohol drinking had effect on semen volume. Compared with subjects with primary school education or lower, those with junior high school education had higher value of semen volume(OR=1.961). Proportion of subjects with high semen volume decreased with the increasing years of alcohol drinking (OR=0.962). Organophosphorous pesticide exposure could result in the decline of the number of sperms with progressive forward progression (OR=0.528), figure of semen density (OR=0.266), semen viability (OR=0.398) and percentage of normal sperm morphology (OR=0.281). There are possible relationships between the season of semen collection and the number of sperms with progressive forward progression, semen viability and percentage of normal sperm morphology . Compared to summer, values of the above three indices would be higher in winter (OR was 2.272, 4.060 and 5.249, respectively). Conclusion Exposure to organophosphorous pesticide could result in the deterioration of semen quality of the peasants.
文摘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.
