Vahidi Serajeddin, Moein Mohammad Reza, Yazdinejad Fatemeh, Ghasemi-Esmailabad Saeed, Narimani Nima
Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Abortion Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Int J Reprod Biomed. 2020 Dec 21;18(12):1059-1064. doi: 10.18502/ijrm.v18i12.8027. eCollection 2020 Dec.
Despite numerous reports about temporal changes in semen quality from all over the world, the debates continue. The latest systemic review has shown an overtime decrease in semen quality worldwide.
To assess the temporal changes in the semen quality among Iranian population referred to an infertility center.
In this retrospective cross-sectional study, semen parameters including concentration, motility, and morphology were compared between Iranian men reffered to Research and Clinical Center for Infertility, Yazd between 1990 to 1992 (group 1, n = 707) and 2010 to 2012 (group 2, n = 1108). Demographic characteristics and semen analysis were collected from the records. The effect of age on semen parameters was also investigated.
Despite the increase in sperm concentration l in group 2, sperm with normal morphology decreased significantly (p 0.001). Grade-A motility decreased (p 0.001), grade B motility increased (p 0.001), and grade C and D motile sperm remained constant (p = 0.303 and p = 0.315, respectively). Also, no significant correlation between the age and semen parameters were observed.
This study showed inconsistent temporal changes in the participant semen quality. Significant temporal decline were obtained between various semen parameters, sperm morphology and grade A motility. These results should be further evaluated by larger studies in the future.
尽管世界各地有大量关于精液质量随时间变化的报道，但相关争论仍在继续。最新的系统评价显示，全球精液质量随时间推移有所下降。
评估前往一家不孕不育中心的伊朗人群精液质量的时间变化。
在这项回顾性横断面研究中，对1990年至1992年（第1组，n = 707）和2010年至2012年（第2组，n = 1108）前往亚兹德不孕不育研究与临床中心的伊朗男性的精液参数（包括浓度、活力和形态）进行了比较。从记录中收集了人口统计学特征和精液分析数据。还研究了年龄对精液参数的影响。
尽管第2组精子浓度有所增加，但正常形态的精子显著减少（p < 0.001）。A级活力下降（p < 0.001），B级活力增加（p < 0.001），C级和D级活动精子保持不变（分别为p = 0.303和p = 0.315）。此外，未观察到年龄与精液参数之间存在显著相关性。
本研究显示参与者精液质量的时间变化不一致。不同精液参数、精子形态和A级活力之间出现了显著的时间下降。这些结果未来应通过更大规模的研究进一步评估。
