Quanquan Guan1, Shiyao Chen1, Bingqian Wang1, Xiaoyu Dou2, Yuemei Lu2, Jian Liang2, Rong Ni2, Chao Yang2, Hengbing Wang2, Mohammad Basir Baktash1, Wei Wu1, Xinru Wang1, Guangbo Fu3, Yankai Xia4. 1. State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, No.101 Longmian Road, Nanjing, 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing, 211166, China. 2. Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, 1 West Huanghe Road, Huai'an, Jiangsu, 223300, China. 3. Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, 1 West Huanghe Road, Huai'an, Jiangsu, 223300, China. Electronic address: fgb200@vip.163.com. 4. State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, No.101 Longmian Road, Nanjing, 211166, China; Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing, 211166, China. Electronic address: yankaixia@njmu.edu.cn.
Abstract
BACKGROUND: Particulate matter (PM) exposure is closely associated with male infertility. Even though an association between poor semen quality and PM exposure has been widely accepted, which and when the semen parameter could be affected are still controversial. The purpose of this study is to estimate the effects of PM exposure on semen quality in Huai'an, China. OBJECTIVES AND METHODS: The study included 1955 men with 2073 semen samples between 2015 and 2017 with moderate to high exposure to air pollution in Huai'an, China. Three multivariable linear regression models were used to conduct exposure-response analyses for PM exposure and semen quality and to estimate the influence during different exposure periods by every 15 days period before ejaculation in all participants group and normal semen quality participants group. RESULTS: The average age of the observations was 28.9 ± 5.4 old years and the average abstinence period was 4.2 ± 1.5 days. The results showed high correlations between both PM2.5 and PM10 exposures throughout entire spermatogenesis and the declines of sperm count (β: -0.93, p < 2 × 10-16 and β: -1.00, p < 2 × 10-16), and sperm concentration (β: -1.00, p < 2 × 10-16 and β: -1.06, p < 2 × 10-16), and PM10 exposure decreased sperm total motility (β: -0.60, p = 2.56 × 10-7), but not sperm progressive motility. Furthermore, PM2.5 exposure decreased sperm count and concentration during 15-75 lag days, and PM10 exposure showed significant association with sperm count and concentration during 0-75 lag days. PM2.5 and PM10 exposures during 45-59 lag days were both inversely associated with sperm total motility (all p value < 0.05). CONCLUSION: The present study revealed that ambient PM exposure throughout spermatogenesis during a long period, especially at early and middle stage were adversely associated with semen quality, sperm count and sperm concentration in particular.
BACKGROUND: Particulate matter (PM) exposure is closely associated with male infertility. Even though an association between poor semen quality and PM exposure has been widely accepted, which and when the semen parameter could be affected are still controversial. The purpose of this study is to estimate the effects of PM exposure on semen quality in Huai'an, China. OBJECTIVES AND METHODS: The study included 1955 men with 2073 semen samples between 2015 and 2017 with moderate to high exposure to air pollution in Huai'an, China. Three multivariable linear regression models were used to conduct exposure-response analyses for PM exposure and semen quality and to estimate the influence during different exposure periods by every 15 days period before ejaculation in all participants group and normal semen quality participants group. RESULTS: The average age of the observations was 28.9 ± 5.4 old years and the average abstinence period was 4.2 ± 1.5 days. The results showed high correlations between both PM2.5 and PM10 exposures throughout entire spermatogenesis and the declines of sperm count (β: -0.93, p < 2 × 10-16 and β: -1.00, p < 2 × 10-16), and sperm concentration (β: -1.00, p < 2 × 10-16 and β: -1.06, p < 2 × 10-16), and PM10 exposure decreased sperm total motility (β: -0.60, p = 2.56 × 10-7), but not sperm progressive motility. Furthermore, PM2.5 exposure decreased sperm count and concentration during 15-75 lag days, and PM10 exposure showed significant association with sperm count and concentration during 0-75 lag days. PM2.5 and PM10 exposures during 45-59 lag days were both inversely associated with sperm total motility (all p value < 0.05). CONCLUSION: The present study revealed that ambient PM exposure throughout spermatogenesis during a long period, especially at early and middle stage were adversely associated with semen quality, sperm count and sperm concentration in particular.
Authors: Tingting Yang; Li Deng; Boyu Sun; Shifu Zhang; Yang Xian; Xiao Xiao; Yu Zhan; Kehui Xu; Johnathan J Buonocore; Ya Tang; Fuping Li; Yang Qiu Journal: Environ Res Date: 2021-04-02 Impact factor: 8.431
Authors: Jargalsaikhan Badarch; James Harding; Emma Dickinson-Craig; Colleen Azen; Hilary Ong; Samantha Hunter; Pia S Pannaraj; Brigitta Szepesi; Tegshjargal Sereenendorj; Sumiya Davaa; Chimedsuren Ochir; David Warburton; Carol Readhead Journal: Int J Environ Res Public Health Date: 2021-03-09 Impact factor: 3.390