The association between metalloestrogens in seminal plasma and sperm quality in infertile patients
XU Weihai*, LUO Wenlong, ZHANG Ling, GAO Fang, WU Limei, ZOU Lingli
*Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou, Zhejiang 310014, China
Abstract：Objective To analyze the association between the concentration of metalloestrogens ( MEs ) in seminal plasma and sperm quality in infertile patients, so as to provide the basis for the study of MEs on human sperm quality. Methods The spermatozoa concentration, progressive rate ( PR ), normal morphology rate ( NMR ) and DNA fragmentation index ( DFI ) were determined in the infertile male patients from Zhejiang Provincial People's Hospital from March to April, 2020. The contents of As, Cd, Co, Cr, Cu, Hg and Ni in seminal plasma were determined by inductively coupled plasma mass spectrometry ( ICP-MS ). The distribution of MEs in seminal plasma and the sperm quality in different concentration of MEs ( grouped by quartiles ) were analyzed. Results Among 105 cases recruited, 28 cases were normal in sperm parameters and 77 cases were abnormal, including 22 cases of oligospermia, 47 cases of asthenospermia, 54 cases of dysspermia and 30 cases of abnormal DFI. As, Cr, Cu, Hg and Ni were detected in all samples, the detection rates of Cd and Co were 78.57%-90.91%. Compared with the normal group, the concentration of As in oligospermia group was higher [( 18.96±12.56 ) µg/L vs. (13.67±4.19) µg/L, P<0.05],the concentration of Cr was higher in asthenospermia, dysspermia and abnormal DFI in Q3 and Q4 groups groups [( 386.62±81.92 ), ( 378.02±81.46 ), ( 393.88±77.03 ) µg/L vs. ( 343.12±55.08 ) µg/L,P<0.05]. The PRs in Q3 and Q4 groups of Cr were lower than that in Q2 group [( 32.95±18.22 )%, ( 27.74±22.77 )% vs. ( 54.18±24.64 )%, P<0.05], the DFI in Q3 and Q4 groups was higher than that in Q2 group [( 26.91±14.77 )%, ( 29.91±16.93 )% vs. ( 9.87±10.93 )%, P<0.05], and the NMR in Q4 group was lower than that in Q2 group [( 1.62±1.72 )% vs. ( 3.36±1.97 )%, P<0.05]. The concentration of sperm in Q3 group of Cu was higher than that in Q2 group [( 115.87±88.22 )×106/mL vs. (61.91±66.16)×106/mL, P<0.05]. Conclusion As and Cu in seminal plasma are associated with abnormal sperm concentration, and Cr is associated with NMR, PR and DFI.
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