1
|
Dai X, Chen G, Zhang M, Mei K, Liu Y, Ding C, Chang Y, Wu Z, Huang H. Exposure to ambient particulate matter affects semen quality: A case study in Wenzhou, China. Andrology 2023; 11:444-455. [PMID: 36252264 DOI: 10.1111/andr.13326] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 10/03/2022] [Accepted: 10/10/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Particulate matter (PM), including PM2.5 (PM ≤ 2.5 µm in aerodynamic diameter) and PM10 (PM ≤ 10 µm in aerodynamic diameter), is a component of air pollutants, which is linked to semen quality. However, the available evidence of association needs to be strengthened, and some studies have conflicting results. OBJECTIVES To evaluate the potential impacts of PM on semen quality during the full (0-90 days before semen examination) and three key sperm development windows (0-9, 10-14, and 70-90 days before semen examination). METHODS We included 1494 infertile men in the main urban area in Wenzhou, China, who had undergone semen examinations for fertility between 2014 and 2019. The impacts were assessed by multivariable linear regression models. RESULTS Overall, during the full sperm development window, PM2.5 and PM10 exposures were associated with declined progressive sperm motility (%) (β: -0.6; 95% confidence intervals (CIs): -1.07, -0.13 and -0.46; -0.59, -0.33) and total sperm motility (%) (-1.95; -2.67, -1.23 and -1.32; -1.82, -0.82), and associated with increased sperm concentration (106 /ml) (0.02; 0.006, 0.023 and 0.007; 0.001, 0.013) and total sperm number (106 ) (0.02; 0.01, 0.03 and 0.011; 0.004, 0.017). Furthermore, only PM2.5 exposure during the 10-14 days window was significantly associated with declined progressive motility (%) (-0.207; -0.395, -0.023). CONCLUSIONS During the full sperm development window, PM exposure has an adverse impact on sperm motility and positive impacts on sperm concentration and total sperm number. The adverse impact was more severe in the 10-14 days window.
Collapse
Affiliation(s)
- Xuchao Dai
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Gang Chen
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Mengqi Zhang
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Kun Mei
- School of Geography Science and Geomatics Engineering, Suzhou University of Science and Technology, Suzhou, China
| | - Yanlong Liu
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Cheng Ding
- Department of Respiratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yanxiang Chang
- School of Public Health and Management, Wenzhou Medical University, Wenzhou, China
| | - Zhigang Wu
- Department of Urology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Reproductive Health Research Center, Health Assessment Center of Wenzhou Medical University, Wenzhou, China
| | - Hong Huang
- Research Center for Healthy China, Wenzhou Medical University, Wenzhou, China.,Zhejiang Provincial Key Laboratory of Watershed Sciences and Health, Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
2
|
Is seminal quality worsening? A 20-year experience in Córdoba, Argentina. J Assist Reprod Genet 2022; 39:1125-1134. [PMID: 35296953 PMCID: PMC9107558 DOI: 10.1007/s10815-022-02458-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/07/2022] [Indexed: 10/18/2022] Open
Abstract
PURPOSE To assess the possible variations in semen quality during the last 20 years in Córdoba, Argentina, and to identify possible causal lifestyle or genitourinary factors. METHODS Retrospective study of 23,130 patients attending an andrology laboratory. The 20-year period (2001-2020) was divided into four quinquenniums. Seminal parameters (sperm concentration, motility, morphology, viability, and membrane functional integrity) were classified as normal or abnormal according to WHO, and results were expressed as percentage of patients abnormal for each parameter per quinquennium. In addition, the percentage of patients per quinquennium exposed to the different risk factors (daily alcohol and/or tobacco consumption; occupational exposure to heat or toxics; history of parotitis or varicocele; and high body mass index, BMI) was reported. RESULTS Patients included in our study did not show impairment in seminal quality over time. Beyond a transient decrease in normozoospermia in the second and third quinquennium, possibly explained by a parallel increase in teratozoospermia, other important parameters of the spermogram did not change. In fact, abnormalities in sperm concentration (oligozoospermia), total sperm count, viability and response to hypoosmotic test showed a decreasing trend over time. On the other hand, parotitis, varicocele, morbid obesity and regular exposition to heat/toxics were the factors more frequently associated with semen abnormalities; the last two increased their frequency over the study period. CONCLUSION The population included in this study did not show a clear impairment in semen quality during the last 20 years. The decreasing patterns found were associated with high BMI and exposure to heat/toxics.
Collapse
|
3
|
Jørgensen N, Lamb DJ, Levine H, Pastuszak AW, Sigalos JT, Swan SH, Eisenberg ML. Are worldwide sperm counts declining? Fertil Steril 2021; 116:1457-1463. [PMID: 34836581 DOI: 10.1016/j.fertnstert.2021.10.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 01/25/2023]
Affiliation(s)
- Niels Jørgensen
- University Department of Growth and Reproduction, University of Copenhagen, Copenhagen, Denmark
| | - Dolores J Lamb
- Department of Urology, Weill Cornell Medical College, New York, New York; Englander Institute for Precision Medicine, Weill Cornell Medical College, New York, New York; Center for Reproductive Genomics, Weill Cornell Medical College, New York, New York
| | - Hagai Levine
- Braun School of Public Health and Community Medicine, Hadassah-Hebrew University, Jerusalem, Israel
| | - Alexander W Pastuszak
- Division of Urology, Department of Surgery, University of Utah Health Science Center, Salt Lake City, Utah
| | - John T Sigalos
- Department of Urology, University of California Los Angeles, Los Angeles, California
| | - Shanna H Swan
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Michael L Eisenberg
- Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California; Department of Urology, Stanford University School of Medicine, Stanford, California.
| |
Collapse
|
4
|
Rosa-Villagrán L, Barrera N, Montes J, Riso C, Sapiro R. Decline of semen quality over the last 30 years in Uruguay. Basic Clin Androl 2021; 31:8. [PMID: 33952196 PMCID: PMC8101031 DOI: 10.1186/s12610-021-00128-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/18/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Over the last years, there has been an increasing concern about a global decline in men's fertility. Specifically, some evidence indicates that sperm quality has decreased over the last years. However, reports showing the changes in sperm quality with time are inconsistent. Part of the contradictions between studies is attributed to geographical differences. Surprisingly, few studies include data from South American countries, creating a bias in the conclusions. This study aims to determine how sperm quality has evolved over the past 30 years in Uruguay. For this purpose, 317 medical records from allegedly healthy sperm donor candidates, aged between 18 and 36 years old, who voluntarily requested to be considered as sperm donors between 1988 and 2019, were analyzed. The studied variables were the following sperm parameters: semen volume, sperm cell concentration, total sperm number, progressive motility, vitality, and sperm morphology. A correlative statistical analysis was performed between seminal parameter values and the year data were collected. RESULTS We found a statistically significant decrease in sperm concentration and normal sperm morphology during the studied period. There was no decrease in vitality, seminal volume, and total progressive motility. Semen parameters were not associated with tobacco, drugs, or alcohol consumption. CONCLUSIONS We conclude that the sperm quality of donor candidates in Uruguay decreased during this period. Further studies should be carried out to verify the occurrence of this phenomenon in the general population and find its possible causes.
Collapse
Affiliation(s)
- Lucía Rosa-Villagrán
- Departamento de Histología y Embriología, Facultad de Medicina, Universidad de la República, Gral. Flores 2125, 11800, Montevideo, Uruguay
| | - Natalibeth Barrera
- Laboratorio de Andrología, Fertilab Laboratorio de Análisis Clínicos, Montevideo, Uruguay.,Laboratorio de FIV, Centro de Esterilidad Montevideo (CEM), Montevideo, Uruguay
| | - José Montes
- Laboratorio de Andrología, Fertilab Laboratorio de Análisis Clínicos, Montevideo, Uruguay
| | - Carlos Riso
- Departamento de Histología y Embriología, Facultad de Medicina, Universidad de la República, Gral. Flores 2125, 11800, Montevideo, Uruguay
| | - Rossana Sapiro
- Departamento de Histología y Embriología, Facultad de Medicina, Universidad de la República, Gral. Flores 2125, 11800, Montevideo, Uruguay.
| |
Collapse
|
5
|
Liu J, Dai Y, Li Y, Yuan E, Wang Q, Wang X, Guan Y. A longitudinal study of semen quality among Chinese sperm donor candidates during the past 11 years. Sci Rep 2020; 10:10771. [PMID: 32612270 PMCID: PMC7329839 DOI: 10.1038/s41598-020-67707-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 06/11/2020] [Indexed: 11/09/2022] Open
Abstract
Studies suggest that semen quality is declining globally, however, the debate remains open due to the possible effects of ethnic and geographical differences. This study aimed to explore whether semen quality of sperm donor candidates has changed in Henan Province, China from 2009 to 2019. In this retrospective study, we included 23,936 sperm donor candidates who were recruited by the Henan Human Sperm Bank of China between 2009 and 2019. To minimize intra-individual bias, we included only the first ejaculate provided by each sperm donor candidate. The following parameters were measured: volume, sperm concentration, total sperm count, progressive motility, and total motility. After adjustment for age, body mass index (BMI), and sexual abstinence duration, we evaluated changes in main semen parameters over time using multiple linear regression analyses. The sperm concentration decreased from 62.0 million/mL in 2009 to 32.0 million/mL in 2019 (P < 0.001), with an average annual rate of 3.9%. The total sperm count decreased from 160.0 million in 2009 to 80.0 million in 2019 (P < 0.001), with an average annual rate of 4.2%. The progressive motility decreased from 54.0% in 2009 to 40.0% in 2019 (P < 0.001), with an average annual rate of 2.5%. The total motility decreased from 60.0% in 2009 to 46.0% in 2019 (P < 0.001), with an average annual rate of 1.9%. Our results indicated that semen quality among sperm donor candidates had decreased during the study period in Henan Province, China.
Collapse
Affiliation(s)
- Junjie Liu
- Henan Human Sperm Bank, The Third Affiliated Hospital of Zhengzhou University, No. 7 Front Kangfu Street, Er'qi District, Zhengzhou, 450052, China
| | - Yanpeng Dai
- Department of Clinical Laboratory, The Third Affiliated Hospital of Zhengzhou University, No.7 Front Kangfu Street, Er'qi District, Zhengzhou, 450052, China
| | - Yushan Li
- Henan Human Sperm Bank, The Third Affiliated Hospital of Zhengzhou University, No. 7 Front Kangfu Street, Er'qi District, Zhengzhou, 450052, China.
| | - Enwu Yuan
- Department of Clinical Laboratory, The Third Affiliated Hospital of Zhengzhou University, No.7 Front Kangfu Street, Er'qi District, Zhengzhou, 450052, China.
| | - Quanxian Wang
- Henan Human Sperm Bank, The Third Affiliated Hospital of Zhengzhou University, No. 7 Front Kangfu Street, Er'qi District, Zhengzhou, 450052, China
| | - Xingling Wang
- Center for Reproductive Medicine, The Third Affiliated Hospital of Zhengzhou University, No.7 Front Kangfu Street, Er'qi District, Zhengzhou, 450052, China
| | - Yichun Guan
- Center for Reproductive Medicine, The Third Affiliated Hospital of Zhengzhou University, No.7 Front Kangfu Street, Er'qi District, Zhengzhou, 450052, China
| |
Collapse
|