male reproductive health
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2022 ◽  
Vol 21 (1) ◽  
Author(s):  
Wei Wu ◽  
Yiqiu Chen ◽  
Yuting Cheng ◽  
Qiuqin Tang ◽  
Feng Pan ◽  
...  

Abstract Background Several studies have suggested adverse effects of particulate matter (PM) exposure on male reproductive health; few have investigated the association between PM exposure and semen quality in a large population of fertile men. Methods We evaluated 14 parameters of semen quality in 1554 fertile men in Nanjing from 2014 to 2016. Individual exposure to particular matter ≤10 μm in diameter (PM10) and ≤ 2.5 μm in diameter (PM2.5) during key periods of sperm development (0-90, 0-9, 10-14, 15-69, and 70-90 days before semen collection) were estimated by inverse distance weighting interpolation. Associations between PM exposure and semen quality were estimated using multivariable linear regression. Results Higher 90-days average PM2.5 was in association with decreased sperm motility (2.21% for total motility, 1.93% for progressive motility per 10 μg/m3 increase, P <  0.001) and four quantitative aspects of sperm motion (curvilinear velocity (VCL), straight line velocity (VSL), average path velocity (VAP), and amplitude of lateral head displacement (ALH), P <  0.01). The association between PM2.5 exposure and semen quality were generally stronger for the earlier exposure window (70-90 days prior to ejaculation) than for recent exposure (0-9, 10-14, or 15-69 days). In the subgroup of men who had normal sperm parameters (n = 1019), similar results were obtained. Ninety-days PM10 exposure was associated only with decreased VCL and VAP and was not related to sperm concentration. Conclusions Exposure to PM2.5 adversely affects semen quality, specifically lower sperm motility, in fertile men. Graphical abstract


2022 ◽  
Vol 40 ◽  
Author(s):  
Christopher J. De Jonge ◽  
Christopher L.R. Barratt ◽  
Allan A. Pacey

Nanoscale ◽  
2022 ◽  
Author(s):  
Lin Liu ◽  
Wenjuan Lu ◽  
Jiahui Dong ◽  
Yongya Wu ◽  
Meng Tang ◽  
...  

Male reproductive health is deteriorating, and fertility is largely affected by environmental factors. This study aims to investigate the potential mechanism underlying mitochondrial division and mitochondrial autophagy in the male...


2022 ◽  
pp. 103472
Author(s):  
Soumaya Boussaid ◽  
Yasmine Makhlouf ◽  
Sonia Rekik ◽  
Samia Jammali ◽  
Elhem Cheour ◽  
...  

2021 ◽  
Vol 11 (4) ◽  
pp. 163-196
Author(s):  
Luís Rato ◽  
Ana C. A. Sousa

The current scenario of male infertility is not yet fully elucidated; however, there is increasing evidence that it is associated with the widespread exposure to endocrine-disrupting chemicals (EDCs), and in particular to obesogens. These compounds interfere with hormones involved in the regulation of metabolism and are associated with weight gain, being also able to change the functioning of the male reproductive axis and, consequently, the testicular physiology and metabolism that are pivotal for spermatogenesis. The disruption of these tightly regulated metabolic pathways leads to adverse reproductive outcomes. The permanent exposure to obesogens has raised serious health concerns. Evidence suggests that obesogens are one of the leading causes of the marked decline of male fertility and key players in shaping the future health outcomes not only for those who are directly exposed but also for upcoming generations. In addition to the changes that lead to inefficient functioning of the male gametes, obesogens induce alterations that are “imprinted” on the genes of the male gametes, establishing a link between generations and contributing to the transmission of defects. Unveiling the molecular mechanisms by which obesogens induce toxicity that may end-up in epigenetic modifications is imperative. This review describes and discusses the suggested molecular targets and potential mechanisms for obesogenic–disrupting chemicals and the subsequent effects on male reproductive health.


AYUSHDHARA ◽  
2021 ◽  
pp. 3566-3573
Author(s):  
Nagendra Chary.M ◽  
Lalitha B.R ◽  
T.Anil Kumar

Male reproductive health depends upon the normal structures and functions of Shukrava srotas. Shukra is composed of both sperm and semen and considered one of the important factors for fertilization. It is stated as Phalavat shukra. Preceptors of Ayurveda have described eight types of Shukra dosha and their treatments. Low sperm count, decrease sperm motility, abnormal sperm morphology, ejaculatory problems, sexual dysfunctions, environmental exposures (radiation, pollution, and stress etc), lifestyle habits (smoking, alcohol, recreational drugs etc), varicocele, hormonal imbalances, DNA damage, and reactive oxygen species (ROS) etc are causative factors for Male infertility. Thousands of years back, ancient system of medicine has mentioned the word Purusha vandya (male infertility) and different pharmacological activities, medicinal formulas, therapies to treat sperm disorders, semen impairments, and sexual dysfunctions. Vajeekarana is one of the special branches of Astanga Ayurveda which maintains the fertility and management of male infertility. Shukrala, Shukra janana, Shukra shodhana, Shukra rechaka, Shukra pravataka and Shukra sthambhaka etc., are the pharmacological activities mentioned to treat Shukradoshas. Shukrala karma mainly composed of Shukra vrudhikara and Shukra srutikara means which enhances the Shukra (semen and sperm) quantitatively and qualitatively and facilitates its ejaculation. Therefore, an attempt has been made to establish the concept of Shukrala karma and its therapeutic applicability in the management of male infertility.


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