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收稿:2020-09-24,
纸质出版:2021-01-15
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王艺蒙, 陈卿, 刘坤, 等. 重庆市大学生PAEs低剂量暴露与精液参数、性激素水平的关联分析及安全限值比较[J]. 第三军医大学学报, 2021,43(1):31-37.
Yimeng WANG, Qing CHEN, Kun LIU, et al. Analysis of semen parameters and sex hormones under low-dose PAEs exposure in Chongqing college students and comparison with reference dose[J]. Journal of Third Military Medical University, 2021, 43(1): 31-37.
王艺蒙, 陈卿, 刘坤, 等. 重庆市大学生PAEs低剂量暴露与精液参数、性激素水平的关联分析及安全限值比较[J]. 第三军医大学学报, 2021,43(1):31-37. DOI: 10.16016/j.1000-5404.202009207.
Yimeng WANG, Qing CHEN, Kun LIU, et al. Analysis of semen parameters and sex hormones under low-dose PAEs exposure in Chongqing college students and comparison with reference dose[J]. Journal of Third Military Medical University, 2021, 43(1): 31-37. DOI: 10.16016/j.1000-5404.202009207.
Objective
2
To analyze the associations of diethyl phthalate (DEP)
di-n-butyl phthalate (DnBP)
di(2-ethyl)hexyl phthalate (DEHP) and butyl benzyl phthalate (BBzP) [which have reference doses (RfD) in the plasticizer
phthalates (PAEs)] with semen parameters and sex hormone levels in the young male adults
and evaluate the safety of RfD.
Methods
2
A total of 796 subjects were sampled from our previously established cohort of the male reproductive health in Chongqing college students (MARHCS) study. The contents of PAEs metabolites were detected in the urine samples of the subjects to estimate the daily intake of PAEs. Optimal scaling regression analysis was used to test their associations of the contents with semen parameters and sex hormone levels. Joinpoint regression model was applied to explore whether there were inflection points in the above associations
and the results were compared with RfD.
Results
2
Except for the metabolite of BBzP (MBzP) below the detection limit in the most individua
ls
the median daily intake of the other 3 PAEs was 0.1
1.0 and 4.3 μg/(kg·d) for DEP
DnBP and DEHP
which were all significantly lower than the corresponding RfD [800
100 and 20 μg/(kg·d)
]
and health guidance values [30
10 and 50 μg/(kg·d)
]
. The metabolite of DEP (MEP) was correlated with the progressive motility
normal sperm morphology
and testosterone level (
P
<
0.01); DnBP metabolite (MnBP) was correlated with normal sperm morphology (
P
<
0.05). Among the 4 metabolites of DEHP
MEHHP and MECPP were related to estrogen level (
P
<
0.05)
and MEOHP and MEHP to estrogen and progesterone levels (
P
<
0.01). But
inflection points were only observed in the correlations between DEHP and some parameters [threshold doses are 2.9~3.6 and 5.0~5.8 μg/(kg·d)
]
.
Conclusion
2
There are 12 kinds of associations of PAEs exposure with semen parameters and sex hormone levels in college students in Chongqing. PAEs
though below RfD
can still causes male reproductive damage.
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