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Sudhakaran G, Kesavan D, Kandaswamy K, Guru A, Arockiaraj J. Unravelling the epigenetic impact: Oxidative stress and its role in male infertility-associated sperm dysfunction. Reprod Toxicol 2024; 124:108531. [PMID: 38176575 DOI: 10.1016/j.reprotox.2023.108531] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/23/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024]
Abstract
Male infertility is a multifactorial condition influenced by epigenetic regulation, oxidative stress, and mitochondrial dysfunction. Oxidative stress-induced damage leads to epigenetic modifications, disrupting gene expression crucial for spermatogenesis and fertilization. Paternal exposure to oxidative stress induces transgenerational epigenetic alterations, potentially impacting male fertility in offspring. Mitochondrial dysfunction impairs sperm function, while leukocytospermia exacerbates oxidative stress-related sperm dysfunction. Therefore, this review focuses on understanding these mechanisms as vital for developing preventive strategies, including targeting oxidative stress-induced epigenetic changes and implementing lifestyle modifications to prevent male infertility. This study investigates how oxidative stress affects the epigenome and sperm production, function, and fertilization. Unravelling the molecular pathways provides valuable insights that can advance our scientific understanding. Additionally, these findings have clinical implications and can help to address the significant global health issue of male infertility.
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Affiliation(s)
- Gokul Sudhakaran
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Chengalpattu District, Kattankulathur 603203, Tamil Nadu, India
| | - D Kesavan
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Chengalpattu District, Kattankulathur 603203, Tamil Nadu, India
| | - Karthikeyan Kandaswamy
- Department of Cariology, Saveetha Dental College and Hospitals, SIMATS, Chennai 600077, Tamil Nadu, India
| | - Ajay Guru
- Department of Cariology, Saveetha Dental College and Hospitals, SIMATS, Chennai 600077, Tamil Nadu, India.
| | - Jesu Arockiaraj
- Toxicology and Pharmacology Laboratory, Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Chengalpattu District, Kattankulathur 603203, Tamil Nadu, India.
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Lin M, Ling P, He Q, Chen D, Zheng L, Tang L, Jiang SW. Low acrosin activity is associated with decreased Spam1/acrosin expression and GSH deficiency-caused premature acrosome release of human sperm cells. Cell Tissue Res 2023; 394:529-545. [PMID: 37833433 DOI: 10.1007/s00441-023-03826-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 08/15/2023] [Indexed: 10/15/2023]
Abstract
Low acrosin activity (LAA) is associated with sperm function anomaly and poor outcomes of in vitro fertilization. In this study, we confirm that 993 semen samples with LAA had a reduced sperm motility and low in vitro fertilization rate in comparison with 1332 normal controls (NC). Proteomic comparison between 11 LAA and 11 NC sperm samples identified 35 upregulated and 99 downregulated proteins in the LAA group. Indeed, proteomic data showed that acrosome enzymes Spam1 and Acrosin were among the downregulated proteins in the LAA group, which was validated by quantitative PCR and immunefluorescent staining of sperm cells. The KEEG pathway analysis revealed a deficiency of GSH and Gln biosynthesis in LAA sperm cells. Immunofluorescent staining of sperms and quantitative PCR verified downregulation of GLUL and GCLC, the key enzymes for GSH and Gln biosynthesis. Moreover, the results of ELISA assay confirmed low levels of GSH and Gln in LAA sperm cells. Mechanistic studies showed that addition of 10 mM H2O2 to semen samples led to a significant reduction of acrosin activity and sperm motility, most possibly by triggering premature acrosome release. In contrast, the presence of 20 mM GSH blocked the oxidative effects of H2O2. Since GSH counteracts the oxidative stress and Gln participates in TCA cycling, their deficiency may affect the redox balance as well as energy production of sperm cells. These findings shed new light on the pathological mechanisms of infertility associated with LAA. Male infertility patients could benefit from GSH supplement by improvement of acrosin activity and other sperm functions.
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Affiliation(s)
- Mengyuan Lin
- Center of Reproductive Medicine, Women's Hospital of Jiangnan University, Wuxi, Jiangsu, 214002, China
| | - Pengyun Ling
- State Key Laboratory of Reproductive Medicine, Research Institute for Reproductive Health and Genetic Diseases, Women's Hospital of Jiangnan University, Wuxi, Jiangsu, 214002, China
| | - Qingwen He
- Department of Public Health, Women's Hospital of Jiangnan University, Wuxi, Jiangsu, 214002, China
| | - Daozhen Chen
- State Key Laboratory of Reproductive Medicine, Research Institute for Reproductive Health and Genetic Diseases, Women's Hospital of Jiangnan University, Wuxi, Jiangsu, 214002, China
- Women's Hospital of Jiangnan University, Wuxi, Jiangsu, 214002, China
- Haidong Second People's Hospital, Haidong, Qinghai, 810700, China
| | - Lianshuai Zheng
- Lianyungang Research Institute for Women's and Children's Health, Lianyungang Maternal and Child Health Hospital, Lianyungang, Jiangsu, China
| | - Lisha Tang
- Clinical Center of Reproductive Medicine, Lianyungang Maternal and Child Health Hospital, Lianyungang, Jiangsu, China.
| | - Shi-Wen Jiang
- State Key Laboratory of Reproductive Medicine, Research Institute for Reproductive Health and Genetic Diseases, Women's Hospital of Jiangnan University, Wuxi, Jiangsu, 214002, China.
- Lianyungang Research Institute for Women's and Children's Health, Lianyungang Maternal and Child Health Hospital, Lianyungang, Jiangsu, China.
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Weiss MC, Wang L, Sargis RM. Hormonal Injustice: Environmental Toxicants as Drivers of Endocrine Health Disparities. Endocrinol Metab Clin North Am 2023; 52:719-736. [PMID: 37865484 PMCID: PMC10929240 DOI: 10.1016/j.ecl.2023.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2023]
Abstract
The toll of multiple endocrine disorders has increased substantially in recent decades, and marginalized populations bear a disproportionate burden of disease. Because of the significant individual and societal impact of these conditions, it is essential to identify and address all modifiable risk factors contributing to these disparities. Abundant evidence now links endocrine dysfunction with exposure to endocrine-disrupting chemicals (EDCs), with greater exposures to multiple EDCs occurring among vulnerable groups, such as racial/ethnic minorities, those with low incomes, and others with high endocrine disease burdens. Identifying and eliminating EDC exposures is an essential step in achieving endocrine health equity.
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Affiliation(s)
- Margaret C Weiss
- School of Public Health, University of Illinois at Chicago, 1603 West Taylor Street, Chicago, IL 60612, USA; College of Medicine, University of Illinois at Chicago, 1853 West Polk Street, Chicago, IL 60612, USA; Division of Endocrinology, Diabetes, and Metabolism, University of Illinois at Chicago, 835 South Wolcott, Suite E625, M/C 640, Chicago, IL 60612, USA
| | - Luyu Wang
- College of Medicine, University of Illinois at Chicago, 1853 West Polk Street, Chicago, IL 60612, USA; Division of Endocrinology, Diabetes, and Metabolism, University of Illinois at Chicago, 835 South Wolcott, Suite E625, M/C 640, Chicago, IL 60612, USA
| | - Robert M Sargis
- College of Medicine, University of Illinois at Chicago, 1853 West Polk Street, Chicago, IL 60612, USA; Division of Endocrinology, Diabetes, and Metabolism, University of Illinois at Chicago, 835 South Wolcott, Suite E625, M/C 640, Chicago, IL 60612, USA; Chicago Center for Health and Environment, School of Public Health, University of Illinois at Chicago, 1603 West Taylor Street, Chicago, IL 60612, USA; Section of Endocrinology, Diabetes, and Metabolism, Jesse Brown Veterans Affairs Medical Center, 820 South Damen, Chicago, IL 60612, USA.
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Corsetti V, Notari T, Montano L. Effects of the low-carb organic Mediterranean diet on testosterone levels and sperm DNA fragmentation. Curr Res Food Sci 2023; 7:100636. [PMID: 38045510 PMCID: PMC10689274 DOI: 10.1016/j.crfs.2023.100636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 12/05/2023] Open
Abstract
The causes of male infertility can vary. Lifestyles, environmental factors, stressful conditions, and socio-economic conditions are significant factors. Diet plays a crucial role in improving a man's reproductive capacity. The appropriate diet should be diverse and ensure the intake of all the necessary nutrients to enhance sperm quality. The Mediterranean diet, which includes high amounts of vegetables and fruits rich in detoxifying and antioxidant substances, as well as polyphenols, flavonoids, carotenoids, and microelements, especially when consumed with organic foods and a lower carbohydrate regimen, are the key aspects addressed in this study. The objective of this research was to modify the diets of 50 subfertile men by providing them with a specific nutritional plan. This plan included consuming 80% organic foods, introducing whole grains and low glycemic load options, eliminating refined carbohydrates, consuming green leafy vegetables and red fruits daily, reducing or eliminating dairy products, consuming primarily grass-fed meat and wild caught seafood, eliminating saturated fats in favor of healthy fats like olive oil, avocado, and nuts. After three months of adhering to the low-carb food plan, testosterone levels significantly increased, while sperm DNA fragmentation decreased in a subgroup of individuals who reduced their carbohydrate intake by 35%.
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Affiliation(s)
- Veronica Corsetti
- Institute of Translational Pharmacology (IFT)-CNR, Via Fosso del Cavaliere 100, 00133, Rome, Italy
| | - Tiziana Notari
- Check Up -Polydiagnostic and Research Laboratory, Andrology Unit, Viale Andrea De Luca 5/c, 84131, Salerno, Italy
| | - Luigi Montano
- Andrology Unit and Service of Lifestyle Medicine in UroAndrology, Local Health Authority (ASL) Salerno, Coordination Unit of the Network for Environmental and Reproductive Health (Eco-Food Fertility Project), “S. Francesco di Assisi Hospital”, 84020, Oliveto Citra, SA, Italy
- PhD Program in Evolutionary Biology and Ecology, University of Rome “Tor Vergata”, 00133, Rome, Italy
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Liu J, Dai Y, Li R, Yuan J, Wang Q, Wang L. Does air pollution exposure affect semen quality? Evidence from a systematic review and meta-analysis of 93,996 Chinese men. Front Public Health 2023; 11:1219340. [PMID: 37601219 PMCID: PMC10435904 DOI: 10.3389/fpubh.2023.1219340] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/21/2023] [Indexed: 08/22/2023] Open
Abstract
Background Air pollution may impair male fertility, but it remains controversial whether air pollution affects semen quality until now. Objectives We undertake a meta-analysis to explore potential impacts of six pollutants exposure during the entire window (0-90 days prior to ejaculation) and critical windows (0-9, 10-14, and 70-90 days prior to ejaculation) on semen quality. Methods Seven databases were retrieved for original studies on the effects of six pollutants exposure for 90 days prior to ejaculation on semen quality. The search process does not limit the language and search date. We only included original studies that reported regression coefficients (β) with 95% confidence intervals (CIs). The β and 95% CIs were pooled using the DerSimonian-Laird random effect models. Results PM2.5 exposure was related with decreased total sperm number (10-14 lag days) and total motility (10-14, 70-90, and 0-90 lag days). PM10 exposure was related with reduced total sperm number (70-90 and 0-90 lag days) and total motility (0-90 lag days). NO2 exposure was related with reduced total sperm number (70-90 and 0-90 lag days). SO2 exposure was related with declined total motility (0-9, 10-14, 0-90 lag days) and total sperm number (0-90 lag days). Conclusion Air pollution affects semen quality making it necessary to limit exposure to air pollution for Chinese men. When implementing protective measures, it is necessary to consider the key period of sperm development.
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Affiliation(s)
- Junjie Liu
- Henan Human Sperm Bank, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yanpeng Dai
- Department of Clinical Laboratory, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Runqing Li
- The Neonatal Screening Center in Henan Province, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiayi Yuan
- The Neonatal Screening Center in Henan Province, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Quanxian Wang
- Henan Human Sperm Bank, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Linkai Wang
- Henan Human Sperm Bank, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Giri J, Raut S, Rimal B, Adhikari R, Joshi TP, Shah G. Impact of air pollution on human health in different geographical locations of Nepal. ENVIRONMENTAL RESEARCH 2023; 226:115669. [PMID: 36921789 DOI: 10.1016/j.envres.2023.115669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
According to a recent survey, Nepal's urban air quality has been classified as one of the worst in the globe. A large portion of the country's population is subjected to health risks caused by air pollution. As Nepal has a wide variation in altitude coupled with socio-cultural and biological diversities, it is important to understand the different health hazards in the different geographical regions - Terai, Hills and Mountains. Constantly increasing physical infrastructures (such as transport vehicles, open burning of plastics and other fuels) are the main reasons for the escalating air pollution in the country. This study aims to critically review the current air pollution status in different geographical locations along with its impacts on public health in the country. It has been revealed that irrespective of geographic location, the air pollutants interfere with different human physiological systems related to respiration as well as cardiovascular, ophthalmic, and gastrointestinal functioning. Further, the research findings highlighting the influence of prolonged exposure of the population to the air pollution leading to the significant number of deaths have been presented. A notable rise in the number of hospitalized patients suffering from illnesses related to above mentioned pollution borne cases has been reported.
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Affiliation(s)
- Jyoti Giri
- Department of Chemistry, Tri-Chandra Multiple Campus, Tribhuvan University, Ghantaghar, Kathmandu, Nepal; Nepal Polymer Institute, P. O. Box 244115, Kathmandu, Nepal; Nepal Development Research Institute, Lalitpur, Kathmandu, Nepal.
| | - Sweccha Raut
- Central Department of Environmental Science, Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Binita Rimal
- Central Department of Environmental Science, Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Rameshwar Adhikari
- Research Centre for Applied Science and Technology (RECAST), Tribhuvan University, Kirtipur, Kathmandu, Nepal
| | - Tista Prasai Joshi
- Nepal Academy of Science and Technology (NAST), Khumaltar, Lalitpur, Nepal
| | - Ganesh Shah
- Nepal Academy of Science and Technology (NAST), Khumaltar, Lalitpur, Nepal
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Xu R, Zhong Y, Li R, Li Y, Zhong Z, Liu T, Wang Q, Lv Z, Huang S, Duan YG, Zhang X, Liu Y. Association between exposure to ambient air pollution and semen quality: A systematic review and meta-analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 870:161892. [PMID: 36731563 DOI: 10.1016/j.scitotenv.2023.161892] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/15/2023] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Accumulating evidence has linked exposure to ambient air pollution to a reduction in semen quality; however, the exposure-response associations are yet to be synthesized. OBJECTIVE To summarize the exposure-response associations between air pollution and semen quality. METHODS We systematically searched PubMed, Embase, and Web of Science for relevant studies published before April 20, 2022. Studies investigating the exposure-response association of PM2.5, PM10, SO2, NO2, CO, and O3 with semen quality written in English were included. Semen quality parameters included semen volume, sperm concentration, total sperm number, total motility, progressive motility, and normal forms. Random-effects and fixed-effects models were performed to synthesize associations in the meta-analysis. RESULTS The search returned 850 studies, 11 of which were eligible for meta-analysis. Each 10 μg/m3 increase of exposure to PM10 and SO2 was respectively associated with a 2.18 % (95 % confidence interval [CI]: 0.10 %-4.21 %) and 8.61 % (1.00 %-15.63 %) reduction in sperm concentration, and a 2.76 % (0.10 %-5.35 %) and 9.52 % (5.82 %-13.93 %) reduction in total sperm number. Each 10 μg/m3 increase of exposure to PM2.5 and PM10 was respectively associated with a 1.06 % (95 % CI: 0.31 %-1.82 %) and 0.75 % (0.43 %-1.08 %) reduction in total motility, and a 0.55 % (0.09 %-1.01 %) and 0.31 % (0.06 %-0.56 %) reduction in progressive motility. No association was observed for PM2.5 or PM10 with semen volume; PM2.5, NO2, CO, or O3 with sperm concentration or total sperm number; and gaseous air pollutants with total or progressive motility. The association between air pollution and normal forms was not summarized due to insufficient number of studies. No significant publication bias was detected. CONCLUSIONS Exposure to ambient PM2.5, PM10, and SO2 was inversely associated with sperm concentration, total sperm number, total motility, and/or progressive motility. Our findings add to the evidence that air pollution may lead to adverse effects on male reproductive system and suggest that reducing exposure to air pollution may help maintain better semen quality.
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Affiliation(s)
- Ruijun Xu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yanling Zhong
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Rui Li
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yingxin Li
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Zihua Zhong
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Tingting Liu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Qiling Wang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute, Guangdong Provincial Fertility Hospital, Guangzhou, China
| | - Ziquan Lv
- Central laboratory of Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Suli Huang
- Department of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, China
| | - Yong-Gang Duan
- Shenzhen Key Laboratory of Fertility Regulation, Centre of Assisted Reproduction and Embryology, The University of Hong Kong - Shenzhen Hospital, Shenzhen, China
| | - Xinzong Zhang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute, Guangdong Provincial Fertility Hospital, Guangzhou, China
| | - Yuewei Liu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China.
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Abdoli S, Masoumi SZ, Kazemi F. Environmental and occupational factors and higher risk of couple infertility: a systematic review study. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2022. [DOI: 10.1186/s43043-022-00124-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Abstract
Background
Infertility is a global health problem that represents an increasing trend due to new lifestyles following technological advances since individuals are facing more risk factors than before. The present systematic review study aimed to investigate the impact of environmental and occupational factors on reproductive parameters and increased risk of couple infertility.
Main body
Scopus, PubMed, SID, and Web of Science databases were searched for the available observational (i.e., cohort, case-control, and cross-sectional) systematic review, meta-analysis, and clinical trial studies between 2007 and 2019. To this end, keywords such as ‘Environmental exposure’, ‘Occupational exposure’, ‘Environmental pollutants’, ‘Environmental pollution’, ‘Couple infertility’, ‘Sterility’, and ‘Sub-fertility’ were used. The retrieved investigations examined the impact of environmental and occupational risk factors on reproductive indices and increased infertility risk. Totally, 66 out of 9519 papers were evaluated after considering the inclusion and exclusion criteria. The reported risk factors in the reviewed studies were heavy metals, cigarette smoking, and exposure to chemicals through consumer goods, urban life, and proximity to main roads. In addition, occupational factors included heavy physical activity, prolonged sitting, exposure to a hot environment, contact with formaldehyde, pesticides, insecticides, mechanical vibration, and contact with ionizing radiation, all of which affected the reproductive parameters. However, some researchers found no significant associations in this regard.
Short conclusion
In general, individuals with known impairments in reproductive parameters were more exposed to risk factors. Nonetheless, more studies are needed to determine the risk of infertility in the population.
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Ashraf M, Kazmi SU, Tariq H, Munır A, Rehman R. Association of trinucleotide repeat polymorphisms CAG and GGC in exon 1 of the androgen receptor gene with male infertility: a cross-sectional study. Turk J Med Sci 2022; 52:1793-1801. [PMID: 36945970 PMCID: PMC10390128 DOI: 10.55730/1300-0144.5525] [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: 05/06/2020] [Accepted: 09/10/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND : Infertility is a global problem that brings about serious sexual and social consequences that strain the health sector and society. The expansion of CAG and GGC repeats in androgen receptor (AR) gene (Ensembl number ENSG00000169083) may lead to reduced fertility. Our objective was to determine the association of CAG and GGC repeats with altered sperm parameters in male infertile subjects. METHODS This was a cross-sectional study conducted at Aga Khan University, Karachi, Pakistan. A total of 376 males were recruited, out of which group A (N = 208) and group B (N = 168) were comprised of subjects with normal and altered sperm parameters, respectively, from 18 to 60 years. The numbers of CAG and GGC repeats were determined by using PCR amplification and sequence analysis using the Molecular Evolutionary Genetic Analysis (MEGA) software version 6.0. Statistical analysis was performed using the SPSS version 20 and the P-value of <0.05 was considered significant. RESULTS The mean androgen receptor gene CAG repeats were significantly longer in males with altered sperm parameters as compared to male subjects with normal sperm parameters (P < 0.001). There was no significant difference found for GGC repeats for subjects with altered sperm parameters. DISCUSSION Longer CAG length corresponded to greater severity of spermatogenic defect and may lead to subfertility recommendations.
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Affiliation(s)
- Mussarat Ashraf
- Department of Biological and Biomedical Sciences, Medical College, Aga Khan University, Karachi, Pakistan
| | - Shahana Urooj Kazmi
- Department of Clinical Microbiology and Immunology, Faculty of Science, Dadabhoy Institute of Higher Education, Karachi, Pakistan
| | - Hemaila Tariq
- Department of Biological and Biomedical Sciences, Medical College, Aga Khan University, Karachi, Pakistan
| | - Adnan Munır
- Department of Urology, Medical College, Liaquat National Hospital, Karachi, Pakistan
| | - Rehana Rehman
- Department of Biological and Biomedical Sciences, Medical College, Aga Khan University, Karachi, Pakistan
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Sharifi F, Roudsari RL. Complementary and alternative medicine use in infertility: A review of infertile women's needs. JOURNAL OF EDUCATION AND HEALTH PROMOTION 2022; 11:195. [PMID: 36003226 PMCID: PMC9393951 DOI: 10.4103/jehp.jehp_704_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/24/2021] [Indexed: 06/15/2023]
Abstract
The use of complementary and alternative medicine (CAM) is common in infertile women in different countries. The purpose of the current study was to review the infertile women's needs in relation to CAM use. This narrative review was conducted through searching English databases including Scopus, PubMed, Embase, Web of Science, Cochrane library as well as Persian databases consisted of SID, and Magiran. The used keywords included "CAM/therapy, needs, and Infertility." All studies published in English peer-reviewed journals from conception to October 2020, which examined the infertile women's needs in the field of CAM use were included in the review. In the process of data extraction, two researchers screened the title, abstract, and full text of the articles. Out of the 2166 articles reviewed, 29 articles including six qualitative and mixed methods studies, four review, and 19 quantitative studies met the inclusion criteria. The results showed that infertile women have different needs in six domains consisted of educational and informational needs, the need for psychological counseling, supportive needs, the need for CAM use counseling, the need to treatment consistent with women's culture and demands, and the need to the integration of CAM with conventional medicine. Awareness of infertile women's needs toward CAM use can help health policymakers and planners in designing and implementing counseling services in accordance with the demands and culture of infertile couples. It also helps to develop a coherent program to integrate the use of CAM in the classical infertility treatment.
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Affiliation(s)
- Farangis Sharifi
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Robab Latifnejad Roudsari
- Nursing and Midwifery Care Research Center, Mashhad University of Medical Sciences
- Department of Midwifery, School of Nursing and Midwifery, Mashhad University of Medical Sciences, Mashhad, Iran
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Zhao Y, Zhu Q, Lin J, Cai J. Association of Exposure to Particulate Matter Air Pollution With Semen Quality Among Men in China. JAMA Netw Open 2022; 5:e2148684. [PMID: 35175344 PMCID: PMC8855237 DOI: 10.1001/jamanetworkopen.2021.48684] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
IMPORTANCE The health effects of exposure to particulate matter (PM) on male fertility remain unclear. Although PM exposure has been linked with semen quality, the results were inconsistent. OBJECTIVE To examine the association of different size fractions of PM (<2.5 μm [PM2.5], 2.5-10 μm [PM2.5-10], and ≤10 μm [PM10]) exposure with semen quality in China. DESIGN, SETTING, AND PARTICIPANTS This retrospective cohort study was conducted using data on men whose wives underwent assisted reproductive technology procedures in a tertiary hospital in Shanghai, China, from January 1, 2013, to December 31, 2019. Participants were from 340 prefecture-level cities of China and were followed up from the date of their first visit until December 31, 2019. Data were analyzed from December 1, 2020, to May 15, 2021. EXPOSURES Exposure to PM2.5, PM2.5-10, and PM10 during the entire period (0-90 days before semen ejaculation) and key periods of sperm development (0-9, 10-14, and 70-90 days before semen ejaculation). MAIN OUTCOMES AND MEASURES Semen quality, including sperm count, concentration, and motility. RESULTS A total of 33 876 men were included in the final analysis, with a mean (SD) age of 34.1 (5.7) years and large variation of PM exposure. For example, the median exposure to PM2.5 during the entire period of sperm development was 46.05 (IQR, 34.38-61.65) μg/m3. During the entire period of sperm development, exposures to higher levels of PM were significantly associated with lower total and progressive sperm motility. For total sperm motility, an IQR increase in PM2.5 exposure was associated with an estimated effect decrease of -3.60% (95% CI, -3.93% to -3.26%); an increase in PM2.5-10 exposure, with an estimated effect decrease of -0.45% (95% CI, -0.76% to -0.14%); and an increase in PM10 exposure, with an estimated effect decrease of -2.44% (95% CI, -2.91% to -1.96%). Similar results were observed for progressive motility. An IQR increase in PM2.5 or PM10 exposures was associated with an estimated effect decrease on sperm progressive motility of -1.87% (95% CI, -2.37% to -1.36%) and -1.05% (95% CI, -1.45% to -0.64%), respectively. However, no significant associations were observed between PM exposure during the entire period of sperm development and sperm count or concentration. CONCLUSIONS AND RELEVANCE These findings suggest that PM exposure may adversely affect sperm motility and highlight the need to reduce ambient particulate air pollution exposure for reproductive-aged men.
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Affiliation(s)
- Yan Zhao
- Shanghai Key Laboratory of Maternal Fetal Medicine, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Qianqian Zhu
- Department of Assisted Reproduction, Shanghai Ninth People’s Hospital, Jiao Tong University School of Medicine, Shanghai, China
| | - Jiaying Lin
- Department of Assisted Reproduction, Shanghai Ninth People’s Hospital, Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Cai
- School of Public Health, Key Lab of Public Health Safety of the Ministry of Education, NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China
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12
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Qian H, Xu Q, Yan W, Fan Y, Li Z, Tao C, Zhang F, Lu C. Association between exposure to ambient air pollution and semen quality in adults: a meta-analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:10792-10801. [PMID: 34532803 DOI: 10.1007/s11356-021-16484-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Air pollution has become a global concern and may be hazardous to human reproductive capacity, but the impact of exposure to air pollutants on semen quality remains controversial. We performed the meta-analysis to examine the association between air pollution exposure and semen quality. We searched PubMed, Web of Science Core Collection, and Cochrane Library databases (before December 2019). We selected original epidemiological studies on humans, written and published in English, that provided quantitative information to determine the associations between air pollution and sperm parameters. A random-effects model was used when the pooled effect estimates were found to be heterogeneous (I2 > 50% or P < 0.05), otherwise, a fixed-effects model was applied. Publication bias was not evaluated for less than 10 included articles. Our meta-analysis showed that the standardised mean differences (SMDs) (95% confidence interval, 95% CI) of sperm concentration, sperm count, and sperm total motility were -0.17 (-0.20, -0.13), -0.05 (-0.08, -0.02), and -0.33 (-0.54, -0.11), respectively. However, exposure to air pollution was not related to sperm progressive motility (SMD = 0.00, 95% CI: -0.13, 0.12). The results indicated that exposure to air pollutants at a higher level was associated with impaired semen quality, including declined sperm concentration, reduced sperm count, and declined total motility. The results suggested that high level of air pollution exposure had a negative effect on semen quality. Improvement of air quality is important for enhancing semen quality.
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Affiliation(s)
- Hong Qian
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Qiaoqiao Xu
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Wenkai Yan
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yun Fan
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Zhi Li
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Chengzhe Tao
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Feng Zhang
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Chuncheng Lu
- State Key Laboratory of Reproductive Medicine, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
- Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
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Kumar S, Sharma A, Thaker R. Air pollutants and impairments of male reproductive health-an overview. REVIEWS ON ENVIRONMENTAL HEALTH 2021; 36:565-575. [PMID: 33544535 DOI: 10.1515/reveh-2020-0136] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
Excessive air pollution, both ambient and indoor are might be detrimental to human wellbeing and are related to morbidity and mortality, it may also affect the reproductive function and its outcome. It is a recognized fact that air pollution contains several toxicants, gases, particulate matter, toxic metals etc. Some of them might affect reproductive and developmental process and a few are persistent. The information accessible on air pollution to human male reproduction is stated to affect semen quality by diminishing one or more sperm quality parameters i.e., sperm morphology, concentration, motility etc. and may causes sperm DNA damage, these might alter the fertility potential which in turn affect pregnancy or its outcome. The impact might be related to the pollutant's concentration and duration of exposure. The data on impact of air contamination on endocrine function are inadequate, inconsistence and the diversity of existence of air contaminants in area to area and multiplicity in semen quality parameters assessed in various studies as well as study design variables complicated the problem of evaluation of impact of air pollution on male reproduction. The data available suggests the air pollution is might be injurious to human male reproductive health, which depends upon amounts of air pollutants in the air, duration of exposure etc. but more comprehensive data are needed to substantiate the findings. The data are also needed on indoor air pollution on reproduction as people are might be subjected to greater quantities of some of the indoor air pollutants as compared to ambient air pollution.
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Affiliation(s)
- Sunil Kumar
- A-10, Radhey Kunj Apartment, Shahi Baugh, Ahmedabad, 380004, India
- National Institute of Occupational Health (ICMR), Ahmedabad, 380016, India
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López-Botella A, Velasco I, Acién M, Sáez-Espinosa P, Todolí-Torró JL, Sánchez-Romero R, Gómez-Torres MJ. Impact of Heavy Metals on Human Male Fertility-An Overview. Antioxidants (Basel) 2021; 10:antiox10091473. [PMID: 34573104 PMCID: PMC8468047 DOI: 10.3390/antiox10091473] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/11/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022] Open
Abstract
Heavy metals are endocrine disruptors which interfere with processes mediated by endogenous hormones of the organism, negatively affecting endocrine functions. Some studies have correlated heavy metal exposure with male infertility. However, the number of studies conducted on humans are limited. Therefore, the aim of this study is to summarize the current knowledge on how heavy metals influence human male fertility. Hence, three distinct databases were consulted—PubMed, Scopus and Web of Science—using single keywords and combinations of them. The total number of identified articles was 636. Nevertheless, by using the inclusion and exclusion criteria, 144 articles were finally included in this work. Results display that the development of adequate instruments for heavy metal assessment may play an important function in human male fertility diagnosis and treatment. Furthermore, clinical trials could be useful to confirm the role of heavy metals in human male fertility diagnosis. Overall, further research is required to fully understand the molecular and cellular basis of the influence of environmental and occupational exposure to heavy metals on human male infertility and reproductive outcomes.
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Affiliation(s)
- Andrea López-Botella
- Service of Obstetrics and Gynecology, Unit of Human Reproduction, FISABIO—San Juan University Hospital, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain; (A.L.-B.); (I.V.); (M.A.)
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
| | - Irene Velasco
- Service of Obstetrics and Gynecology, Unit of Human Reproduction, FISABIO—San Juan University Hospital, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain; (A.L.-B.); (I.V.); (M.A.)
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
| | - Maribel Acién
- Service of Obstetrics and Gynecology, Unit of Human Reproduction, FISABIO—San Juan University Hospital, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain; (A.L.-B.); (I.V.); (M.A.)
- Gynecology Division, Faculty of Medicine, Miguel Hernández University, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain
| | - Paula Sáez-Espinosa
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
| | - José-Luis Todolí-Torró
- Department of Analytical Chemistry, Nutrition and Food Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain; (J.-L.T.-T.); (R.S.-R.)
| | - Raquel Sánchez-Romero
- Department of Analytical Chemistry, Nutrition and Food Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain; (J.-L.T.-T.); (R.S.-R.)
| | - María José Gómez-Torres
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
- Correspondence:
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15
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Li Q, Zheng D, Wang Y, Li R, Wu H, Xu S, Kang Y, Cao Y, Chen X, Zhu Y, Xu S, Chen ZJ, Liu P, Qiao J. Association between exposure to airborne particulate matter less than 2.5 μm and human fecundity in China. ENVIRONMENT INTERNATIONAL 2021; 146:106231. [PMID: 33171380 DOI: 10.1016/j.envint.2020.106231] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Whether exposure to airborne particulate matter less than 2.5 μm (PM2.5) could impact human fecundity is unclear. We aimed to evaluate the potential impact of PM2.5 exposure on time to pregnancy (TTP) and the prevalence of infertility in the general Chinese population. METHOD We collected reproductive information, sociodemographic characteristics, and lifestyle data of 10,211 couples at risk of pregnancy from a large-scale community-based fertility survey in China. Then, we estimated each participant's 1-year, 3-year, and 5-year average PM2.5 exposure levels based on remote sensing information. After adjusting for demographic, lifestyle, and environmental co-variables, discrete-time Cox regression models were used to estimate the fecundability odds ratio (FOR) per 10 μg/m3 change of PM2.5. We also estimated the odds ratio (OR) of infertility per 10 μg/m3 change of PM2.5, using logistic regression models. FINDINGS Among the 10,211 couples, 6,875 (67%) had conceived spontaneously, with a median TTP of 5 months (interquartile range: 2-10 months). The median PM2.5 exposure was 56.8 μg/m3, with a wide range of 9.2-93.5 μg/m3. In Cox regression models, each increase of 10 μg/m3 in the 1-year average PM2.5 exposure was associated with a significant decrease in fecundity by 11% (FOR: 0.89; 95% confidence interval [CI]: 0.86-0.92). In logistic regression models, it was also associated with an 20% increased likelihood of infertility (OR: 1.20; 95% CI: 1.13-1.27). CONCLUSION PM2.5 exposure was associated with reduced human fecundity, presented by a longer TTP and higher odds of infertility, which might explain the increased infertility rates in areas with heavy PM2.5 pollution.
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Affiliation(s)
- Qin Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Danni Zheng
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Yuanyuan Wang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Rong Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Hongping Wu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Suxin Xu
- Reproductive Medical Center, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Yuefan Kang
- Reproductive Medical Center, Maternal and Children's Health Hospital of Fujian Province, Fuzhou 350001, China
| | - Yunxia Cao
- Department of Obstetrics and Gynecology, Reproductive Medical Center, First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Xiujuan Chen
- Reproductive Medical Center, Affiliated Hospital of Inner Mongolia Medical University, Huhhot 010059, China
| | - Yimin Zhu
- Department of Reproductive Endocrinology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Shuguang Xu
- Population and Family Planning Research Institute of Heilongjiang Province, Harbin 150020, China
| | - Zi-Jiang Chen
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250001, China
| | - Ping Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China
| | - Jie Qiao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China; Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100191, China.
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16
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Chen YA, Chang YK, Su YR, Chang HC. Ambient sulfur dioxide could have an impact on testicular volume from a observational study on a population of infertile male. BMC Urol 2020; 20:149. [PMID: 33008439 PMCID: PMC7530959 DOI: 10.1186/s12894-020-00710-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 08/26/2020] [Indexed: 01/19/2023] Open
Abstract
Background The effect of ambient pollutants on the male reproductive system is controversial. This retrospective study investigated the effect of environmental pollutants on male reproductive health. Methods Male patients with primary infertility (n = 282) were identified from a single center between January 2016 and December 2017. Patients were physically examined for the presence of varicocele and for the volume of both testicles. Semen quality was measured in terms of the total sperm count, sperm concentration, and the percentage of sperm cells with motility and normal morphology. Data were acquired on the concentration of ambient pollutants, namely particulate matters of diameter < 2.5 μm, sulfur dioxide (SO2), nitrogen oxides (NOx), and ozone (O3), measured on daily and hourly basis, from the Environmental Protection Administration Executive Yuan, Taiwan. Individual exposure to pollutants was estimated based on the reported residential address of each participant. Statistical analysis indicated the effect of each pollutant on the testicular volume, sex hormone profile, and semen parameters. Results The mean ± standard deviation of age was 36.7 ± 7.3 years. The average sperm count and concentration were 41.9 million/mL and 34.1 million/mL, respectively. The mean levels of serum testosterone, follicle-stimulating hormone, and luteinizing hormone were 3.57 ± 1.68 ng/mL, 7.59 ± 6.3 IU/L, and 4.68 ± 3.49 IU/L, respectively. According to the multivariate linear regression model, NOx exposure was a risk factor for decreased sperm concentration and motility (p = 0.043 and 0.032). Furthermore, SO2 exposure was negatively associated and testicular volume (p < 0.01). Conclusions NO2 and SO2 exposure were negatively associated with the seminal parameter and decreased testicular volume, respectively, in a population of men with infertility. However, additional prospective studies are needed to ascertain the cause–effect relation of current results.
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Affiliation(s)
- Yu-An Chen
- Department of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, No.1, Changde St., Zhongzheng Dist, Taipei City, 10048, Taiwan.,Department of Urology, Cardinal Tien Hospital, School of Medicine Fu-Jen Catholic University, No.362, Zhongzheng Rd., Xindian Dist, New Taipei City, 231, Taiwan
| | - Yi-Kai Chang
- Department of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, No.1, Changde St., Zhongzheng Dist, Taipei City, 10048, Taiwan
| | - Yann-Rong Su
- Department of Urology, National Taiwan University Hospital Hsin-Chu Branch, NO.25, Lane 442, Sec.1, Jingguo Rd, Hsinchu City, 300, Taiwan
| | - Hong-Chiang Chang
- Department of Urology, National Taiwan University Hospital and National Taiwan University College of Medicine, No.1, Changde St., Zhongzheng Dist, Taipei City, 10048, Taiwan.
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17
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Yokota R, Okuhara T, Ueno H, Okada H, Furukawa E, Kiuchi T. Online Japanese-Language Information on Lifestyle Factors Associated With Reduced Fertility: Content Analysis. J Med Internet Res 2020; 22:e19777. [PMID: 32840486 PMCID: PMC7479583 DOI: 10.2196/19777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 06/23/2020] [Accepted: 07/07/2020] [Indexed: 01/16/2023] Open
Abstract
Background Approximately one-third of Japanese couples currently worry or previously worried about infertility. To develop strategies for the primary prevention of infertility as a population approach, it is important for the general population to be knowledgeable about fertility and infertility. The internet may contribute to the dissemination of information regarding infertility and fertility. However, few studies have examined online information about fertility. Objective This study aimed to quantitatively examine online Japanese-language information about lifestyle factors associated with reduced fertility. Methods We conducted online searches, using the 10 search terms with the highest numbers of searches that people hoping to conceive are likely to input in two major search engines in Japan (Google Japan and Yahoo! Japan). From the 2200 retrieved websites, 1181 duplicates and 500 websites unrelated to our objective were excluded, resulting in a final dataset of 519 websites. Coding guidelines were developed for the following lifestyle factors associated with reduced fertility: sexually transmitted diseases, psychological stress, cigarette smoking, alcohol use, nutrition and diet, physical activity and exercise, underweight, overweight and obesity, and environmental pollutants. Results In terms of the website author’s professional expertise, 69.6 % of the coding instances for the selected lifestyle factors were mentioned by hospitals, clinics, or the media, whereas only 1.7% were mentioned by laypersons. Psychological stress (20.1%) and sexually transmitted diseases (18.8%) were the most frequently mentioned lifestyle factors associated with reduced fertility. In contrast, cigarette smoking, alcohol use, nutrition and diet, physical activity and exercise, underweight, overweight and obesity, and environmental pollutants were mentioned relatively infrequently. The association between reduced fertility and sexually transmitted diseases was mentioned significantly more frequently by hospitals and clinics than by the media (P<.001). The association between reduced fertility and nutrition and diet was mentioned significantly more frequently by the media than by hospitals and clinics (P=.008). With regard to the sex of the target audience for the information, female-specific references to psychological stress, sexually transmitted diseases, nutrition and diet, underweight, physical activity and exercise, and overweight and obesity were significantly more frequent than were male-specific references to these lifestyle factors (psychological stress: P=.002, sexually transmitted diseases: P<.001, nutrition and diet: P<.001, underweight: P<.001, physical activity and exercise: P<.001, overweight and obesity: P<.001). Conclusions Of the lifestyle factors known to be related to reduced fertility, cigarette smoking, alcohol use, and male-specific lifestyle factors are mentioned relatively infrequently in online information sources in Japan, and these factors should be discussed more in information published on websites.
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Affiliation(s)
- Rie Yokota
- Department of Health Communication, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tsuyoshi Okuhara
- Department of Health Communication, School of Public Health, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Haruka Ueno
- Department of Health and Dietetics, Faculty of Health and Medical Science, Teikyo Heisei Unievrsity, Toshima-ku, Tokyo, Japan
| | - Hiroko Okada
- Department of Health Communication, School of Public Health, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Emi Furukawa
- Department of Health Communication, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takahiro Kiuchi
- Department of Health Communication, School of Public Health, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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18
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Babakhanzadeh E, Nazari M, Ghasemifar S, Khodadadian A. Some of the Factors Involved in Male Infertility: A Prospective Review. Int J Gen Med 2020; 13:29-41. [PMID: 32104049 PMCID: PMC7008178 DOI: 10.2147/ijgm.s241099] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 01/23/2020] [Indexed: 01/04/2023] Open
Abstract
Infertility is defined as the inability of couples to have a baby after one year of regular unprotected intercourse, affecting 10 to 15% of couples. According to the latest WHO statistics, approximately 50-80 million people worldwide sufer from infertility, and male factors are responsible for approximately 20-30% of all infertility cases. The diagnosis of infertility in men is mainly based on semen analysis. The main parameters of semen include: concentration, appearance and motility of sperm. Causes of infertility in men include a variety of things including hormonal disorders, physical problems, lifestyle problems, psychological issues, sex problems, chromosomal abnormalities and single-gene defects. Despite numerous efforts by researchers to identify the underlying causes of male infertility, about 70% of cases remain unknown. These statistics show a lack of understanding of the mechanisms involved in male infertility. This article focuses on the histology of testicular tissue samples, the male reproductive structure, factors affecting male infertility, strategies available to find genes involved in infertility, existing therapeutic methods for male infertility, and sperm recovery in infertile men.
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Affiliation(s)
- Emad Babakhanzadeh
- Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Majid Nazari
- Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Sina Ghasemifar
- Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ali Khodadadian
- Department of Medical Genetics, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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19
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Liao BQ, Liu CB, Xie SJ, Liu Y, Deng YB, He SW, Fu XP, Fu BB, Wang YL, Chen MH, Lin YH, Li FP, Xie X, Hong XR, Wang HL. Effects of fine particulate matter (PM 2.5) on ovarian function and embryo quality in mice. ENVIRONMENT INTERNATIONAL 2020; 135:105338. [PMID: 31841806 DOI: 10.1016/j.envint.2019.105338] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 10/13/2019] [Accepted: 11/15/2019] [Indexed: 05/09/2023]
Abstract
Fine particulate matter (PM2.5) has an adverse effect on reproductive function, in particular causing reduced male reproductive function, but relatively few studies have directly targeted its effects on female reproduction. To investigate the effects of PM2.5 exposure on female reproduction, we exposed female mice to PM2.5 by intratracheal instillation for 28 days, and evaluated apoptosis of ovarian granulosa cells and oocytes and the quality embryos after insemination. Our results showed increased numbers of apoptotic granulosa cells and oocytes after exposure to elevated concentrations of PM2.5, which had adverse effects on female fertility via compromising embryo development and quality. We conclude that PM2.5 induced apoptosis of ovarian granulosa cells and oocytes leading to disrupted embryo development and female fertility in mice.
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Affiliation(s)
- Bao-Qiong Liao
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China; Department of Reproduction and Genetics, Ganzhou Maternal and Child Health Hospital, Ganzhou, Jiangxi 341000, China; Department of Obstetrics and Gynecology, 900 Hospital of the Joint Logistics Team, Fuzhou Clinic Medical College, Fujian Medical University, Dongfang Affiliated Hospital of Xiamen University, Fuzhou, Fujian 350025, China; Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Chao-Bin Liu
- The Fourth Department of Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Shu-Juan Xie
- Department of Obstetrics and Gynecology, 900 Hospital of the Joint Logistics Team, Fuzhou Clinic Medical College, Fujian Medical University, Dongfang Affiliated Hospital of Xiamen University, Fuzhou, Fujian 350025, China; Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Yu Liu
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China; Medical College, Guangxi University, Nanning, Guangxi 530004, China
| | - Ya-Bin Deng
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Shu-Wen He
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Xian-Pei Fu
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Bin-Bin Fu
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Ya-Long Wang
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Ming-Huang Chen
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Yan-Hong Lin
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Fei-Ping Li
- Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China
| | - Xi Xie
- The Fourth Department of Gynecology, Fujian Provincial Maternity and Children's Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350001, China
| | - Xin-Ru Hong
- Department of Obstetrics and Gynecology, 900 Hospital of the Joint Logistics Team, Fuzhou Clinic Medical College, Fujian Medical University, Dongfang Affiliated Hospital of Xiamen University, Fuzhou, Fujian 350025, China.
| | - Hai-Long Wang
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China; Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China; Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian 361102, China.
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Vyas R, Sharma G, Sain D, Sisodia R. Effects of Chlorophytum borivilianum Sant. F against gamma radiation-induced testicular injuries in Swiss albino mice. Ayu 2020; 41:45-51. [PMID: 34566384 PMCID: PMC8415242 DOI: 10.4103/ayu.ayu_82_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/10/2020] [Accepted: 02/02/2021] [Indexed: 11/12/2022] Open
Abstract
Background: Radiation therapy is considered as an important tool in cancer treatment. Despite its impressive role in treating cancer, severe side effects in organs have been reported. To address these therapeutic side effects, several combination methods have been identified to minimize adverse effects caused by radiation therapy. Aims and Objectives: Based on higher radioactive sensitivity of testicular tissues, administration of Chlorophytumborivilianum (CB) Sant. F extracts was evaluated for its protective effects against radiation in testis. Materials and methods: Two forms of CB extracts (CB alone and CB-silver nanoparticles [AgNPs]) were administered at a dose of 50 mg/kg body weight in Swiss albino male mice for 7 consecutive days. Following 6 Gy gamma radiation, animals were observed for 30 days in four phases. Sperm counts, body weight, testicular weight and stereological and histological evaluation of testis were evaluated. Results: Following irradiation, a significant decline in body weight (P = 0.008) and testicular weight (P = 0.001) was noted when compared with control. Ununiformed type A and B spermatogonia, partially filled tubules, inter-tubular vacuoles, and disrupted epithelium were the main types of damages caused by irradiation. Reorganization and resumption of histological features emerged from the 15th day postirradiation in CB extract (CBE)-treated animals. Conclusion: Testicular response was observed against radiation in animals treated with CB extracts, while CB-AgNPs indicated better toleration when compared to CB extract alone.
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Affiliation(s)
- Ruchi Vyas
- Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur, Rajasthan, India
| | - Garima Sharma
- Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur, Rajasthan, India
| | - Devki Sain
- Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur, Rajasthan, India
| | - Rashmi Sisodia
- Department of Zoology, Centre for Advanced Studies, University of Rajasthan, Jaipur, Rajasthan, India
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Zhang P, Zhao Y, Zhang H, Liu J, Feng Y, Yin S, Cheng S, Sun X, Min L, Li L, Shen W. Low dose chlorothalonil impairs mouse spermatogenesis through the intertwining of Estrogen Receptor Pathways with histone and DNA methylation. CHEMOSPHERE 2019; 230:384-395. [PMID: 31112861 DOI: 10.1016/j.chemosphere.2019.05.029] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 04/23/2019] [Accepted: 05/03/2019] [Indexed: 06/09/2023]
Abstract
Recently, environment contaminants including pesticides, fungicides, mycotoxin and others chemicals have been suggested to be responsible for the decline in the human spermatozoa quality especially motility and the increase in infertility rate. Chlorothalonil is used widely for protection of vegetables and crops because it is a broad spectrum fungicide. It has been reported that chronic occupational exposure to fungicides was associated with poor spermatozoa morphology in young men. The pubertal period is very important for the male reproductive system development due to spermatogonial cell proliferation, the expansion of meiotic and haploid germ cells. Although some investigations have studied the male reproductive toxicity of chlorothalonil, almost no studies focused on spermatogenesis. The aim of our current investigation was to explore the impacts of chlorothalonil on spermatogenesis and the underlying mechanisms. It demonstrates: i) chlorothalonil decreased boar spermatozoa motility in vitro and increased the cell apoptosis; ii) chlorothalonil inhibited mouse spermatogenesis in vivo; iii) chlorothalonil disturbed spermatogenesis through the disruption of estrogen receptor signalling; iv) chlorothalonil disrupted histone methylation and DNA methylation which might be through estrogen signalling pathways. Due to the over use or incorrect use, chlorothalonil might cause serious problems to human health, especially spermatogenesis. Therefore we strongly recommend that greater attention should be paid to this fungicide to minimise its impact on human health especially spermatogenesis.
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Affiliation(s)
- Pengfei Zhang
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China; College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Yong Zhao
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Jing Liu
- University Research Core, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Yanni Feng
- College of Veterinary Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Shen Yin
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Shunfeng Cheng
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Xiaofeng Sun
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Lingjiang Min
- College of Animal Sciences and Technology, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Lan Li
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Wei Shen
- College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, PR China.
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Xu CS, Zhou Y, Jiang Z, Wang LE, Huang JJ, Zhang TY, Zhao Y, Shen W, Zou SH, Zang LL. The in vitro effects of gibberellin on human sperm motility. Aging (Albany NY) 2019; 11:3080-3093. [PMID: 31118311 PMCID: PMC6555458 DOI: 10.18632/aging.101963] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 05/07/2019] [Indexed: 12/21/2022]
Abstract
Gibberellin, a plant growth regulator, is widely used to increase the shelf life and quality of fruits and vegetables. In this study, human semen samples were exposed to different concentrations of gibberellin, which reduced spermatozoa motility in vitro. Gibberellin exposure also increased levels of reactive oxygen species and the protein levels of apoptosis markers in human sperm. Gibberellin inhibited the activity of Na+/K+-adenosine triphosphatase (ATPase) and Ca2+-ATPase, which maintain the stability of ions inside and outside the membranes of spermatozoa. Moreover, gibberellin exposure suppressed adenosine triphosphate production and reduced the protein levels of adenosine triphosphate synthases, which may have induced the protein expression of adenosine 5'-monophosphate-activated protein kinase (AMPK) and its phosphorylated form. These results suggest that gibberellin reduces human sperm motility in vitro by increasing reactive oxygen species levels and reducing ATPase activity, which may upregulate AMPK and consequently reduce the fertilization potential of spermatozoa.
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Affiliation(s)
- Chun-Shuang Xu
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Yi Zhou
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Zhou Jiang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Li-E Wang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Jiao-Jiao Huang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
| | - Tian-Yu Zhang
- Institute of Reproductive Sciences, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Yong Zhao
- Institute of Reproductive Sciences, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Shen
- Institute of Reproductive Sciences, College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Shu-Hua Zou
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Li-Li Zang
- Center for Reproductive Medicine, Qingdao Women’s and Children’s Hospital, Qingdao University, Qingdao 266034, China
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Jurewicz J, Dziewirska E, Radwan M, Hanke W. Air pollution from natural and anthropic sources and male fertility. Reprod Biol Endocrinol 2018; 16:109. [PMID: 30579357 PMCID: PMC6304234 DOI: 10.1186/s12958-018-0430-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 10/24/2018] [Indexed: 01/08/2023] Open
Abstract
Exposure to air pollution has been clearly associated with a range of adverse health effects, including reproductive toxicity. However, a limited amount of research has been conducted to examine the association between air pollution and male reproductive outcomes, specially semen quality. We performed a systematic review (up to March 2017) to assess the impact of environmental and occupational exposure to air pollution on semen quality. Epidemiological studies focusing on air pollution exposures and male reproduction were identified by a search of the PUBMED, MEDLINE, EBSCO and TOXNET literature bases. Twenty-two studies were included which assess the impact of air pollutants (PM2.5, PM10, SO2, NOx, O3, PAHs) on main semen parameters (sperm concentration, motility, morphology), CASA parameters, DNA fragmentation, sperm aneuploidy and the level of reproductive hormones. The number of studies found significant results supporting the evidence that air pollution may affect: DNA fragmentation, morphology and motility.In summary, most studies concluded that outdoor air pollution affects at least one of the assessed semen parameters. However the diversity of air pollutants and semen parameters presented in the studies included in the review and different study design caused lack of consistency in results and difficulties in comparison.
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Affiliation(s)
- Joanna Jurewicz
- Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, 8 Teresy St, 91-362, Lodz, Poland.
| | - Emila Dziewirska
- Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, 8 Teresy St, 91-362, Lodz, Poland
| | - Michał Radwan
- Department of Gynecology and Reproduction, "Gameta" Hospital, 34/36 Rudzka St, 95-030, Rzgów, Poland
- Faculty of Health Sciences, The State University of Applied Sciences in Plock, 2 Dąbrowskiego Sq, 09-402, Płock, Poland
| | - Wojciech Hanke
- Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, 8 Teresy St, 91-362, Lodz, Poland
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Santi D, Magnani E, Michelangeli M, Grassi R, Vecchi B, Pedroni G, Roli L, De Santis MC, Baraldi E, Setti M, Trenti T, Simoni M. Seasonal variation of semen parameters correlates with environmental temperature and air pollution: A big data analysis over 6 years. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 235:806-813. [PMID: 29353799 DOI: 10.1016/j.envpol.2018.01.021] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/06/2017] [Accepted: 01/08/2018] [Indexed: 05/27/2023]
Abstract
BACKGROUND Male fertility is progressively declining in many developed countries, but the relationship between male infertility and environmental factors is still unclear. OBJECTIVES To assess the influence of environmental temperature and air pollution on semen parameters, using a big-data approach. METHODS A big data analysis of parameters related to 5131 men, living in a province of Northern Italy and undergoing semen analyses between January 2010 and March 2016 was performed. Ambient temperature was recorded on the day of analysis and the 90 days prior to the analysis and the average value of particulate matter (PM) and NO2 in the year of the test. All data were acquired by geocoding patients residential address. A data warehouse containing 990,904,591 data was generated and analysed by multiple regressions. RESULTS 5573 semen analyses were collected. Both maximum and minimum temperatures registered on the day of collection were inversely related to total sperm number (p < .001), non-progressive motility (NPrM) (p < .005) and normal forms (p < .001). Results were confirmed considering temperature in the 30 and 60 days before collection, but not in the 90 days before collection. Total sperm number was lower in summer/autumn (p < .001) and was inversely related with daylight duration (p < .001). PM10 and PM2.5 were inversely related to PrM (p < .001 and p < .005) and abnormal forms (p < .001). CONCLUSIONS This is the first evaluation of the relationship between male fertility-related parameters and environment using a big-data approach. A seasonal change in semen parameters was found, with a fluctuation related to both temperature and daylight duration. A negative correlation between air pollution and semen quality is suggested. Such seasonal and environmental associations should be considered when assessing changes of male fertility-related parameters over time.
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Affiliation(s)
- Daniele Santi
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda Ospedaliero-Universitaria of Modena, Italy.
| | - Elisa Magnani
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda Ospedaliero-Universitaria of Modena, Italy
| | | | | | | | - Gioia Pedroni
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy
| | - Laura Roli
- Department of Laboratory Medicine and Anatomy Pathology, Azienda USL of Modena, Italy
| | | | - Enrica Baraldi
- Department of Laboratory Medicine and Anatomy Pathology, Azienda USL of Modena, Italy
| | - Monica Setti
- Service of Clinical Engineering, Azienda Ospedaliero-Universitaria of Modena, Italy
| | - Tommaso Trenti
- Department of Laboratory Medicine and Anatomy Pathology, Azienda USL of Modena, Italy
| | - Manuela Simoni
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Azienda Ospedaliero-Universitaria of Modena, Italy
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Zhang W, Zhao Y, Zhang P, Hao Y, Yu S, Min L, Li L, Ma D, Chen L, Yi B, Tang X, Meng Q, Liu L, Wang S, Shen W, Zhang H. Decrease in male mouse fertility by hydrogen sulfide and/or ammonia can Be inheritable. CHEMOSPHERE 2018; 194:147-157. [PMID: 29202267 DOI: 10.1016/j.chemosphere.2017.11.164] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/09/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
Numerous epidemiological studies suggest that air pollutants cause a decline in the quality of human spermatozoa and thus a reduction in fertility. However, the exact cause of infertility remains unknown. Air pollution gases, such as NH3 and H2S are either free or bound to airborne particular materials (PM) and are abundant and reactive. The aim of this current investigation was to explore the impacts of NH3 and/or H2S on male fertility and the underlying mechanisms. Male mouse exposed to H2S and/or NH3 and after two generations were used to evaluate the impacts on fertility. The fertility, and spermatozoa quality parameters and proteins involved in spermatogenesis were investigated. Our current investigation demonstrates: i) H2S and/or NH3 decrease male fertility by 20-30%, reduce the spermatozoa concentration about 20-40%, decrease 10-20%, increase around 30%; ii) the reduction in male fertility by H2S and/or NH3 can be inheritable; iii) H2S and/or NH3 can diminish male fertility through the disruption of spermatogenesis without affecting other body parameters such as body weight and organ index. One component of air pollutants, for example NH3, does not have a severe impact; however, two or more pollutants such as H2S and NH3 combined can cause serious health problems, especially with regard to male fertility. We suggest that greater attention should be paid to these air pollutants to improve human health and fertility.
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Affiliation(s)
- Weidong Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China; College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Yong Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China; College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Pengfei Zhang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Yanan Hao
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Shuai Yu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Lingjiang Min
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Lan Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Dongxue Ma
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Liang Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Bao Yi
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Xiangfang Tang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Qingshi Meng
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Lei Liu
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Shukun Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Wei Shen
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China.
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van Anders SM, Schudson ZC, Abed EC, Beischel WJ, Dibble ER, Gunther OD, Kutchko VJ, Silver ER. Biological Sex, Gender, and Public Policy. ACTA ACUST UNITED AC 2017. [DOI: 10.1177/2372732217720700] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Policy debates have focused on who can participate in or access single-sex activities or services. This article describes how science of the biology of sex is relevant to three major policy areas: parenting (including leaves), sports, and public spaces. We focus on what scientists know about sex and gender (and gender/sex, where gender and sex are intertwined), and the role of various biological factors, including hormones such as testosterone and estradiol as well as genetics, gonads, genitals, and more. The policies under debate often use “biological sex,” but this fails to account for scientific understandings of sex and gender, misrepresents sex as single-faceted and binary, and overlooks scientific consensus about the importance of gender and identity.
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27
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Male fertility and its association with occupational and mobile phone towers hazards: An analytic study. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2016. [DOI: 10.1016/j.mefs.2016.03.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Hydrogen Sulfide and/or Ammonia Reduces Spermatozoa Motility through AMPK/AKT Related Pathways. Sci Rep 2016; 6:37884. [PMID: 27883089 PMCID: PMC5121643 DOI: 10.1038/srep37884] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 11/02/2016] [Indexed: 12/24/2022] Open
Abstract
A number of emerging studies suggest that air pollutants such as hydrogen sulfide (H2S) and ammonia (NH3) may cause a decline in spermatozoa motility. The impact and underlying mechanisms are currently unknown. Boar spermatozoa (in vitro) and peripubertal male mice (in vivo) were exposed to H2S and/or NH3 to evaluate the impact on spermatozoa motility. Na2S and/or NH4Cl reduced the motility of boar spermatozoa in vitro. Na2S and/or NH4Cl disrupted multiple signaling pathways including decreasing Na+/K+ ATPase activity and protein kinase B (AKT) levels, activating Adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) and phosphatase and tensin homolog deleted on chromosome ten (PTEN), and increasing reactive oxygen species (ROS) to diminish boar spermatozoa motility. The increase in ROS might have activated PTEN, which in turn diminished AKT activation. The ATP deficiency (indicated by reduction in Na+/K+ ATPase activity), transforming growth factor (TGFβ) activated kinase-1 (TAK1) activation, and AKT deactivation stimulated AMPK, which caused a decline in boar spermatozoa motility. Simultaneously, the deactivation of AKT might play some role in the reduction of boar spermatozoa motility. Furthermore, Na2S and/or NH4Cl declined the motility of mouse spermatozoa without affecting mouse body weight gain in vivo. Findings of the present study suggest that H2S and/or NH3 are adversely associated with spermatozoa motility.
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Decline in semen quality among 30,636 young Chinese men from 2001 to 2015. Fertil Steril 2016; 107:83-88.e2. [PMID: 27793371 DOI: 10.1016/j.fertnstert.2016.09.035] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/16/2016] [Accepted: 09/16/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To provide information of semen quality among young Chinese men in the past 15 years. DESIGN Retrospective cross-sectional study. SETTING Sperm bank. PATIENT(S) A total of 30,636 young adult men who applied to be sperm donors at the Hunan Province Human Sperm Bank of China in 2001-2015 were included in the study. INTERVENTION(S) Physical examination and analysis of blood and semen samples. MAIN OUTCOME MEASURE(S) Semen parameters, such as semen volume, sperm concentration, total sperm count, progressively motile sperm count, sperm progressive motility, sperm morphology, and round cells. RESULT(S) Many of the semen parameters showed a decreasing trend over the 15-year observation period. The sperm concentration and percentage of sperm with normal morphology decreased from 68 × 106/mL to 47 × 106/mL and from 31.8% to 10.8%, respectively. Although sperm progressive motility showed irregular variation, the progressively motile sperm count decreased from 34 × 106 to 21 × 106 over the 15-year period. Furthermore, the rate of qualified donors fell from 55.78% in 2001 to 17.80% in 2015, and the rate for 2015 was approximately threefold lower than the corresponding rates in 2001. CONCLUSION(S) The semen quality among young Chinese men has declined over a period of 15 years, especially in terms of sperm concentration, total sperm count, sperm progressive motility, and normal morphology.
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Santi D, Vezzani S, Granata AR, Roli L, De Santis MC, Ongaro C, Donati F, Baraldi E, Trenti T, Setti M, Simoni M. Sperm quality and environment: A retrospective, cohort study in a Northern province of Italy. ENVIRONMENTAL RESEARCH 2016; 150:144-153. [PMID: 27288912 DOI: 10.1016/j.envres.2016.05.053] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 05/30/2016] [Indexed: 05/27/2023]
Abstract
BACKGROUND Several studies proposed a relationship between environmental factors and semen quality, as well as the negative effect of air pollution on spermatogenesis and gonadal function. No specific studies evaluated the environmental influence on semen quality in a specific geographical area. AIM to evaluate the environmental influence on male sperm parameters in a Northern Italian population referred for semen analysis in the National Health System. The objective of the study is the assessment of the relationship of both air pollution and environmental parameters with quality-related sperm variables, during the coldest months of the year when air is usually most polluted, due to low ventilation and poor rainfall. STUDY DESIGN A retrospective, observational, cohort study was carried out in the province of Modena, located in the Emilia-Romagna region of Northern Italy. METHODS Semen analyses (n=406), environmental temperature, air humidity and air particulate matter (PM) measurements from the 1st of November 2014 to the 19th of February 2015 were acquired to the first database. Since spermatogenesis lasts over two months, a second, wider database was arranged, evaluating environmental exposure in the 3 months before semen collection (from August 1st 2014). All data included in the database were registered by geo-coding the residential address of the patients and the site of registration of environmental factors. The geo-codification of parameters was performed using Fusion Tables of Google available at https://www.google.com/fusiontables/data? dsrcid=implicit, considering the exact time of measurement. RESULTS Average air temperature was inversely related to sperm concentration and to total sperm number (p<0.001). Semen volume was inversely related only to the minimum (p<0.001) and not to maximum recorded temperature (p=0.110). Air humidity was not related to sperm quantity and quality. PM2.5 was directly related to total sperm number (p<0.001). PM10 was directly related to both semen volume (0<0.001), and typical forms (p<0.001), inversely related to atypical forms (p<0.001), but related neither to sperm concentration (p=0.430) nor to sperm motility. The extended analyses considering environmental parameters in the 3 months before semen collection, confirmed the relationship between air temperature and sperm quantity, whereas no influence was found between PM and sperm quality. CONCLUSION An influence of environmental temperature on semen quantity is suggested, without a clear effect of air pollution, as assessed through PM10 levels, on sperm parameter variations.
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Affiliation(s)
- Daniele Santi
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Italy.
| | - Silvia Vezzani
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Italy
| | - Antonio Rm Granata
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy
| | - Laura Roli
- Department of Laboratory Medicine and Pathological Anatomy, Italy
| | | | - Chiara Ongaro
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy
| | - Federica Donati
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy
| | - Enrica Baraldi
- Department of Laboratory Medicine and Pathological Anatomy, Italy
| | - Tommaso Trenti
- Department of Laboratory Medicine and Pathological Anatomy, Italy
| | - Monica Setti
- Service of Clinical Engineering, Azienda USL of Modena, Italy
| | - Manuela Simoni
- Unit of Endocrinology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Italy; Department of Medicine, Endocrinology, Metabolism and Geriatrics, Italy; Center for Genomic Research, University of Modena and Reggio Emilia, Italy
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31
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Bijlsma N, Cohen MM. Environmental Chemical Assessment in Clinical Practice: Unveiling the Elephant in the Room. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:181. [PMID: 26848668 PMCID: PMC4772201 DOI: 10.3390/ijerph13020181] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/19/2016] [Accepted: 01/27/2016] [Indexed: 02/06/2023]
Abstract
A growing body of evidence suggests chemicals present in air, water, soil, food, building materials and household products are toxicants that contribute to the many chronic diseases typically seen in routine medical practice. Yet, despite calls from numerous organisations to provide clinicians with more training and awareness in environmental health, there are multiple barriers to the clinical assessment of toxic environmental exposures. Recent developments in the fields of systems biology, innovative breakthroughs in biomedical research encompassing the "-omics" fields, and advances in mobile sensing, peer-to-peer networks and big data, provide tools that future clinicians can use to assess environmental chemical exposures in their patients. There is also a need for concerted action at all levels, including actions by individual patients, clinicians, medical educators, regulators, government and non-government organisations, corporations and the wider civil society, to understand the "exposome" and minimise the extent of toxic exposures on current and future generations. Clinical environmental chemical risk assessment may provide a bridge between multiple disciplines that uses new technologies to herald in a new era in personalised medicine that unites clinicians, patients and civil society in the quest to understand and master the links between the environment and human health.
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Affiliation(s)
- Nicole Bijlsma
- School of Health Sciences, RMIT University, Bundoora, Victoria 3083, Australia.
| | - Marc M Cohen
- School of Health Sciences, RMIT University, Bundoora, Victoria 3083, Australia.
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