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Mailin G, Yang Y, Liu C, Jing Y, Wang Y, Ma J, Liao T, Shen L, Zhu L. The RNA-seq mapping of Testicular Development after Heat Stress in Sexually Mature Mice. Sci Data 2024; 11:913. [PMID: 39179570 PMCID: PMC11344092 DOI: 10.1038/s41597-024-03782-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 08/14/2024] [Indexed: 08/26/2024] Open
Abstract
The testis serves as the primary site for spermatogenesis in mammals and is a crucial organ for the secretion of male hormones. Heat stress (HS) can have adverse effects on the seminiferous tubules, sperm quality, and sperm fertilization capability within the testis. Despite numerous previous studies describing various time points after heat stress in mice, a systematic and comprehensive dataset on heat stress and recovery in mice has been lacking. This study aimed to explore the gene expression changes in the recovery of multiple seminiferous epithelial cycles and spermatogenic cycles in mouse testicles after heat stress. We obtained high-throughput bulk RNA-seq data from testicular tissue of 4 NC mice and 32 HS mice (divided into 9 groups: NC, 30 min, 2 h, 6 h, 24 h, 3d, 8d, 24d, 47d, and 95d) and illustrated the dynamic changes in differential genes. This data set provides valuable insights into the detailed dynamic changes of one or more spermatogenic cycles after heat stress in mouse testicles, as well as the molecular mechanisms involved.
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Affiliation(s)
- Gan Mailin
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yiting Yang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Chengming Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yunhong Jing
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yan Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jianfeng Ma
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Tianci Liao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Linyuan Shen
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China.
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Li Zhu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China.
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
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Thacharodi A, Hassan S, Acharya G, Vithlani A, Hoang Le Q, Pugazhendhi A. Endocrine disrupting chemicals and their effects on the reproductive health in men. ENVIRONMENTAL RESEARCH 2023; 236:116825. [PMID: 37544467 DOI: 10.1016/j.envres.2023.116825] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 07/26/2023] [Accepted: 08/02/2023] [Indexed: 08/08/2023]
Abstract
Endocrine Disrupting Chemicals (EDCs) are harmful compounds that enter the environment naturally or through anthropogenic activities and disrupt normal endocrine functions in humans, adversely affecting reproductive health. Among the most significant sources of EDC contaminants are the pharmaceutical, cosmetic, and packaging industries. EDCs have been identified to have a deteriorating effect on male reproductive system, as evidenced by the increasing number of male infertility cases. A large number of case studies have been published in which men exposed to EDCs experienced testicular cancer, undescended testicles, a decrease in serum testosterone levels, and poor semen quality. Furthermore, epidemiological evidence suggested a link between prenatal EDC exposure and cryptorchidism or undescended testicles, hypospadias, and decreased anogenital distance in infants. The majority of these findings, however, are incongruent due to the lack of long-term follow-up studies that would demonstrate EDCs to be associated with male reproductive disorders. This review aims to provide an overview on recent scientific progress on the association of EDCs to male reproductive health with special emphasis on its toxicity and possible mechanism of EDCs that disrupt male reproductive system.
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Affiliation(s)
- Aswin Thacharodi
- Dr. Thacharodi's Laboratories, Department of Research and Development, Puducherry, 605005, India
| | - Saqib Hassan
- Department of Biotechnology, School of Bio and Chemical Engineering, Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu, 600119, India; American Society for Microbiology, Washington, 20036, USA
| | - Gururaj Acharya
- Department of Civil Engineering, NMAM Institute of Technology, NITTE (Deemed to be university), Karnataka, 574110, India
| | - Avadh Vithlani
- Department of Pulmonary Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Quynh Hoang Le
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam
| | - Arivalagan Pugazhendhi
- School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam.
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Bajard L, Vespalcová H, Negi CK, Kohoutek J, Bláha L, Sovadinová I. Anti-androgenic activity of novel flame retardants in mixtures: Newly identified contribution from tris(2,3-dibromopropyl) isocyanurate (TDBP-TAZTO). CHEMOSPHERE 2023; 341:140004. [PMID: 37652251 DOI: 10.1016/j.chemosphere.2023.140004] [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: 12/23/2022] [Revised: 08/23/2023] [Accepted: 08/26/2023] [Indexed: 09/02/2023]
Abstract
In recent decades, male infertility has been on the rise, largely attributed to exposure to chemicals with endocrine-disrupting properties. The adverse effects of disrupting androgen actions on the development and reproductive health of children and adolescents have been extensively studied. Flame retardants (FRs), used in consumer products to delay flammability, have been identified as antagonists of the androgen receptor (AR), potentially leading to adverse outcomes in male reproductive health later in life. This study examined the interaction of eight novel FRs with the AR, employing an in vitro AR-dependent luciferase reporter gene assay utilizing MDA-kb2 cells. The investigation revealed the anti-androgenic activity of tris(2,3-dibromopropyl) isocyanurate (TDBP-TAZTO), a frequently detected FR in the environment. Furthermore, TDBP-TAZTO contributed to anti-androgenic activity when combined with six other anti-androgenic FRs. The mixture effects were predicted by three commonly employed models: concentration addition (CA), generalized CA, and independent action, with the CA model showcasing the highest accuracy. This suggests that all FRs act through a similar mechanism, as further confirmed by in silico molecular docking, indicating limited synergy or antagonism. Importantly, in the mixtures, each FR contributed to the induction of anti-androgenic effects at concentrations below their individual effective concentrations in single exposures. This raises concern for public health, especially considering the co-detection of these FRs and their potential co-occurrence with other anti-androgenic chemicals like bisphenols. Therefore, our findings, along with previous research, strongly support the incorporation of combined effects of mixtures in risk assessment to efficiently safeguard population health.
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Affiliation(s)
- Lola Bajard
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Hana Vespalcová
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Chander K Negi
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Jiří Kohoutek
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Luděk Bláha
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Iva Sovadinová
- RECETOX, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic.
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Rogers RE, Chai S, Pask AJ, Mattiske DM. Prenatal exposure to diethylstilbestrol has long-lasting, transgenerational impacts on fertility and reproductive development. Toxicol Sci 2023; 195:53-60. [PMID: 37471692 PMCID: PMC10464516 DOI: 10.1093/toxsci/kfad066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023] Open
Abstract
Significant decreases in fertility have been observed over the past 50 years, with female conception rates dropping by 44% and male sperm counts decreasing by over 50%. This dramatic decrease in fertility can be attributed in part to our increasing exposure to endocrine disrupting chemicals (EDCs). Diethylstilbestrol (DES) is an estrogenic EDC that was prescribed to millions of pregnant women between 1940 and 1970 and resulted in detrimental reproductive effects in the offspring that were exposed in utero. Women who were exposed to DES in utero experienced higher rates of infertility, pregnancy complications, and reproductive cancers. Alarmingly, there is evidence to suggest that these effects may persist in the grandchildren and great grandchildren of exposed women. To define the transgenerational reproductive impacts in females following exposure to DES, gestating mice were exposed to DES and the effects monitored in the female descendants across 3 generations. There was a trend for reduced pregnancy rate and fertility index seen across the generations and moreover, the anogenital distance (AGD) was significantly reduced up until the third, unexposed generation. The onset of puberty was also significantly affected, with the timing of vaginal opening occurring significantly earlier in DES descendants. These results indicate a transgenerational effect of DES on multiple reproductive parameters including fertility, timing of puberty, and AGD. These data have significant implications for more than 50 million DES descendants worldwide as well as raising concerns for the ongoing health impacts caused by exposures to other estrogenic EDCs which are pervasive in our environment.
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Affiliation(s)
- Rachael E Rogers
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Shuyi Chai
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Andrew J Pask
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Deidre M Mattiske
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia
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Erenpreisa J, Vainshelbaum NM, Lazovska M, Karklins R, Salmina K, Zayakin P, Rumnieks F, Inashkina I, Pjanova D, Erenpreiss J. The Price of Human Evolution: Cancer-Testis Antigens, the Decline in Male Fertility and the Increase in Cancer. Int J Mol Sci 2023; 24:11660. [PMID: 37511419 PMCID: PMC10380301 DOI: 10.3390/ijms241411660] [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: 06/08/2023] [Revised: 07/15/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
The increasing frequency of general and particularly male cancer coupled with the reduction in male fertility seen worldwide motivated us to seek a potential evolutionary link between these two phenomena, concerning the reproductive transcriptional modules observed in cancer and the expression of cancer-testis antigens (CTA). The phylostratigraphy analysis of the human genome allowed us to link the early evolutionary origin of cancer via the reproductive life cycles of the unicellulars and early multicellulars, potentially driving soma-germ transition, female meiosis, and the parthenogenesis of polyploid giant cancer cells (PGCCs), with the expansion of the CTA multi-families, very late during their evolution. CTA adaptation was aided by retrovirus domestication in the unstable genomes of mammals, for protecting male fertility in stress conditions, particularly that of humans, as compensation for the energy consumption of a large complex brain which also exploited retrotransposition. We found that the early and late evolutionary branches of human cancer are united by the immunity-proto-placental network, which evolved in the Cambrian and shares stress regulators with the finely-tuned sex determination system. We further propose that social stress and endocrine disruption caused by environmental pollution with organic materials, which alter sex determination in male foetuses and further spermatogenesis in adults, bias the development of PGCC-parthenogenetic cancer by default.
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Affiliation(s)
| | | | - Marija Lazovska
- Molecular Genetics Scientific Laboratory, Riga Stradins University, Dzirciema 16, LV-1007 Riga, Latvia
| | - Roberts Karklins
- Molecular Genetics Scientific Laboratory, Riga Stradins University, Dzirciema 16, LV-1007 Riga, Latvia
| | - Kristine Salmina
- Latvian Biomedical Research and Study Centre, Ratsupites 1-1k, LV-1067 Riga, Latvia
| | - Pawel Zayakin
- Latvian Biomedical Research and Study Centre, Ratsupites 1-1k, LV-1067 Riga, Latvia
| | - Felikss Rumnieks
- Latvian Biomedical Research and Study Centre, Ratsupites 1-1k, LV-1067 Riga, Latvia
| | - Inna Inashkina
- Latvian Biomedical Research and Study Centre, Ratsupites 1-1k, LV-1067 Riga, Latvia
| | - Dace Pjanova
- Latvian Biomedical Research and Study Centre, Ratsupites 1-1k, LV-1067 Riga, Latvia
- Molecular Genetics Scientific Laboratory, Riga Stradins University, Dzirciema 16, LV-1007 Riga, Latvia
| | - Juris Erenpreiss
- Molecular Genetics Scientific Laboratory, Riga Stradins University, Dzirciema 16, LV-1007 Riga, Latvia
- Clinic iVF-Riga, Zala 1, LV-1010 Riga, Latvia
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Yin L, Hu C, Yu XJ. High-content analysis of testicular toxicity of BPA and its selected analogs in mouse spermatogonial, Sertoli cells, and Leydig cells revealed BPAF induced unique multinucleation phenotype associated with the increased DNA synthesis. Toxicol In Vitro 2023; 89:105589. [PMID: 36958674 PMCID: PMC10351343 DOI: 10.1016/j.tiv.2023.105589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/25/2023]
Abstract
Bisphenol A is an endocrine disruptor that has been shown to have testicular toxicity in animal models. Its structural analog, including bisphenol S (BPS), bisphenol AF (BPAF), and tetrabromobisphenol A (TBBPA) have been introduced to the market as BPA alternatives. Previously, we developed high-content analysis (HCA) assays and applied machine learning to compare the testicular toxicity of BPA and its analogs in spermatogonial cells and testicular cell co-culture models. There are diverse cell populations in the testis to support spermatogenesis, but their cell type-specific toxicities are still not clear. The purpose of this study is to examine the selective toxicity of BPA, BPS), BPAF, and TBBPA on these testicular cells, including Sertoli cells, Leydig cells, and spermatogonia cells. We developed a high-content image-based single-cell analysis and measured a broad spectrum of adverse endpoints related to the development of reproductive toxicology, including cell number, nuclear morphology, DNA synthesis, cell cycle progression, early DNA damage response, cytoskeleton structure, DNA methylation status, and autophagy. We introduced an HCA index and spectrum to reveal multiple HCA parameters and observed distinct toxicity profiling of BPA and its analogs among three testicular types. The HCA spectrum shows the dynamic, chemical-specific, dose-dependent changes of each HCA parameter. Each chemical displayed a unique dose-dependent profile within each type of cell. All three types of cells showed the highest response to BPAF at 10 μM across all endpoints measured. BPAF targeted spermatogonial cell (C18) more significantly at 5 μM. BPS more likely targeted Sertoli cell (TM4) and Leydig cell (TM3) and less at spermatogonia cells. TBBPA targeted spermatogonia, Sertoli cells, and less at TM3 cells. BPA is mainly targeted at TM4, followed by TM3 cells, and less at spermatogonial cells. Most importantly, we observed that BPAF induced a dose-dependent increase in spermatogonia cells, not in Sertoli and Leydig cells. In summary, our current HCA assays revealed the cell-type-specific toxicities of BPA and its analogs in different testicular cells. Multinucleation induced by BPAF, along with increased DNA damage and synthesis at low doses, could possibly have a profound long-term effect on reproductive systems.
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Affiliation(s)
- Lei Yin
- ReproTox Biotech LLC, 800 Bradbury Dr. SE Science & Technology Park, Albuquerque, NM 87106, United States of America
| | - Chelin Hu
- College of Nursing School, University of New Mexico, Albuquerque, NM 87106, United States of America
| | - Xiaozhong John Yu
- College of Nursing School, University of New Mexico, Albuquerque, NM 87106, United States of America.
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Gan M, Jing Y, Xie Z, Ma J, Chen L, Zhang S, Zhao Y, Niu L, Wang Y, Li X, Zhu L, Shen L. Potential Function of Testicular MicroRNAs in Heat-Stress-Induced Spermatogenesis Disorders. Int J Mol Sci 2023; 24:ijms24108809. [PMID: 37240155 DOI: 10.3390/ijms24108809] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/08/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Spermatogenesis is temperature-dependent, and the increase in testicular temperature seriously affects mammalian spermatogenesis and semen quality. In this study, the testicular heat stress model of mice was made with a 43 °C water bath for 25 min, and the effects of heat stress on semen quality and spermatogenesis-related regulators were analyzed. On the 7th day after heat stress, testis weight shrank to 68.45% and sperm density dropped to 33.20%. High-throughput sequencing analysis showed that 98 microRNAs (miRNAs) and 369 mRNAs were down-regulated, while 77 miRNAs and 1424 mRNAs were up-regulated after heat stress. Through gene ontology (GO) analysis of differentially expressed genes and miRNA-mRNA co-expression networks, it was found that heat stress may be involved in the regulation of testicular atrophy and spermatogenesis disorders by affecting cell meiosis process and cell cycle. In addition, through functional enrichment analysis, co-expression regulatory network, correlation analysis and in vitro experiment, it was found that miR-143-3p may be a representative potential key regulatory factor affecting spermatogenesis under heat stress. In summary, our results enrich the understanding of miRNAs in testicular heat stress and provide a reference for the prevention and treatment of heat-stress-induced spermatogenesis disorders.
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Affiliation(s)
- Mailin Gan
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Yunhong Jing
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhongwei Xie
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Jianfeng Ma
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Lei Chen
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Shunhua Zhang
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Ye Zhao
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Lili Niu
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Wang
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Xuewei Li
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Zhu
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Linyuan Shen
- Key Laboratory of Livestock and Poultry Multi-Omics, College of Animal and Technology, Sichuan Agricultural University, Chengdu 611130, China
- Farm Animal Genetic Resource Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
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Dutta S, Sengupta P, Bagchi S, Chhikara BS, Pavlík A, Sláma P, Roychoudhury S. Reproductive toxicity of combined effects of endocrine disruptors on human reproduction. Front Cell Dev Biol 2023; 11:1162015. [PMID: 37250900 PMCID: PMC10214012 DOI: 10.3389/fcell.2023.1162015] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023] Open
Abstract
Confluence of environmental, genetic, and lifestyle variables is responsible for deterioration of human fecundity. Endocrine disruptors or endocrine disrupting chemicals (EDCs) may be found in a variety of foods, water, air, beverages, and tobacco smoke. It has been demonstrated in experimental investigations that a wide range of endocrine disrupting chemicals have negative effects on human reproductive function. However, evidence on the reproductive consequences of human exposure to endocrine disrupting chemicals is sparse and/or conflicting in the scientific literature. The combined toxicological assessment is a practical method for assessing the hazards of cocktails of chemicals, co-existing in the environment. The current review provides a comprehensive overview of studies emphasizing the combined toxicity of endocrine disrupting chemicals on human reproduction. Endocrine disrupting chemicals interact with each other to disrupt the different endocrine axes, resulting in severe gonadal dysfunctions. Transgenerational epigenetic effects have also been induced in germ cells, mostly through DNA methylation and epimutations. Similarly, after acute or chronic exposure to endocrine disrupting chemicals combinations, increased oxidative stress (OS), elevated antioxidant enzymatic activity, disrupted reproductive cycle, and reduced steroidogenesis are often reported consequences. The article also discusses the concentration addition (CA) and independent action (IA) prediction models, which reveal the importance of various synergistic actions of endocrine disrupting chemicals mixtures. More crucially, this evidence-based study addresses the research limitations and information gaps, as well as particularly presents the future research views on combined endocrine disrupting chemicals toxicity on human reproduction.
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Affiliation(s)
- Sulagna Dutta
- School of Medical Sciences, Bharath Institute of Higher Education and Research (BIHER), Chennai, Tamil Nadu, India
| | - Pallav Sengupta
- Department of Biomedical Sciences, College of Medicine, Gulf Medical University, Ajman, United Arab Emirates
| | - Sovan Bagchi
- Department of Biomedical Sciences, College of Medicine, Gulf Medical University, Ajman, United Arab Emirates
| | - Bhupender S. Chhikara
- Molecular Medicinal and Material NanoChemistry Laboratory, Department of Chemistry, Aditi Mahavidyalaya, University of Delhi, Delhi, India
| | - Aleš Pavlík
- Laboratory of Animal Physiology, Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Petr Sláma
- Laboratory of Animal Immunology and Biotechnology, Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
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Gaml-Sørensen A, Brix N, Tøttenborg SS, Hougaard KS, Hærvig KK, Bonde JPE, Henriksen TB, Toft G, Ramlau-Hansen CH. Selection bias in a male-offspring cohort investigating fecundity: is there reason for concern? Hum Reprod 2023; 38:293-305. [PMID: 36370427 DOI: 10.1093/humrep/deac241] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/05/2022] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Is there risk of selection bias in etiological studies investigating prenatal risk factors of poor male fecundity in a cohort of young men? SUMMARY ANSWER The risk of selection bias is considered limited despite a low participation rate. WHAT IS KNOWN ALREADY Participation rates in studies relying on volunteers to provide a semen sample are often very low. Many risk factors for poor male fecundity are associated with participation status, and as men with low fecundity may be more inclined to participate in studies of semen quality, a risk of selection bias exists. STUDY DESIGN, SIZE, DURATION A population-based follow-up study of 5697 young men invited to the Fetal Programming of Semen Quality (FEPOS) cohort nested within the Danish National Birth Cohort (DNBC), 1998-2019. PARTICIPANTS/MATERIALS, SETTING, METHODS Young men (age range: 18 years, 9 months to 21 years, 4 months) born 1998-2000 by mothers included in the DNBC were invited to participate in FEPOS. In total, 1173 men answered a survey in FEPOS (n = 115 participated partly); of those, 1058 men participated fully by also providing a semen and a blood sample at a clinical visit. Differential selection according to parental baseline characteristics in the first trimester, the sons' own characteristics from the FEPOS survey, and urogenital malformations and diseases in reproductive organs from the Danish registers were investigated using logistic regression. The influence of inverse probability of selection weights (IPSWs) to investigate potential selection bias was examined using a predefined exposure-outcome association of maternal smoking in the first trimester (yes, no) and total sperm count analysed using adjusted negative binomial regression. A multidimensional bias analysis on the same association was performed using a variety of bias parameters to assess different scenarios of differential selection. MAIN RESULTS AND THE ROLE OF CHANCE Participation differed according to most parental characteristics in first trimester but did not differ according to the prevalence of a urogenital malformation or disease in the reproductive organs. Associations between maternal smoking in the first trimester and male fecundity were similar when the regression models were fitted without and with IPSWs. Adjusting for other potential risk factors for poor male fecundity, maternal smoking was associated with 21% (95% CI: -32% to -9%) lower total sperm count. In the bias analysis, this estimate changed only slightly under realistic scenarios. This may be extrapolated to other exposure-outcome associations. LIMITATIONS, REASONS FOR CAUTION We were unable to directly assess markers of male fecundity for non-participants from, for example an external source and therefore relied on potential proxies of fecundity. We did not have sufficient power to analyse associations between prenatal exposures and urogenital malformations. WIDER IMPLICATIONS OF THE FINDINGS The results are reassuring when using this cohort to identify causes of poor male fecundity. The results may be generalized to other similar cohorts. As the young men grow older, they can be followed in the Danish registers, as an external source, to examine, whether participation is associated with the risk of having an infertility diagnosis. STUDY FUNDING/COMPETING INTEREST(S) The project was funded by the Lundbeck Foundation (R170-2014-855), the Capital Region of Denmark, Medical doctor Sofus Carl Emil Friis and spouse Olga Doris Friis's Grant, Axel Muusfeldt's Foundation (2016-491), AP Møller Foundation (16-37), the Health Foundation, Dagmar Marshall's Fond, Aarhus University and Independent Research Fund Denmark (9039-00128B). The authors declare that they have no conflict of interest. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Anne Gaml-Sørensen
- Department of Public Health, Research Unit for Epidemiology, Aarhus University, Aarhus C, Denmark
| | - Nis Brix
- Department of Public Health, Research Unit for Epidemiology, Aarhus University, Aarhus C, Denmark
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus N, Denmark
| | - Sandra Søgaard Tøttenborg
- Department of Occupational and Environmental Medicine, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen NV, Denmark
- Department of Public Health, University of Copenhagen, København K, Denmark
| | - Karin Sørig Hougaard
- Department of Public Health, University of Copenhagen, København K, Denmark
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
| | - Katia Keglberg Hærvig
- Department of Occupational and Environmental Medicine, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen NV, Denmark
| | - Jens Peter Ellekilde Bonde
- Department of Occupational and Environmental Medicine, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen NV, Denmark
- Department of Public Health, University of Copenhagen, København K, Denmark
| | - Tine Brink Henriksen
- Perinatal Epidemiology Research Unit, Aarhus University, Aarhus N, Denmark
- Department of Paediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus N, Denmark
| | - Gunnar Toft
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus N, Denmark
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Amorello D, Indelicato R, Barreca S, Orecchio S, Orecchio S. Analytical Method for Quantification of Several Phthalate Acid Esters by Gas Chromatography-Mass Spectrometry in Coffee Brew Samples. ChemistryOpen 2022; 11:e202200082. [PMID: 36478441 PMCID: PMC9728482 DOI: 10.1002/open.202200082] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 10/07/2022] [Indexed: 12/13/2022] Open
Abstract
Several phthalate acid esters (PAEs), often called phthalate esters or phthalates, are substances classified as harmful due to their carcinogenic and mutagenic properties, and moreover, as dangerous for humans because they interfere with the endocrine system. In general, phthalic esters are used as plasticizers for different polymers and more other consumer products. In the present study, we describe a simple method to quantify PAEs in coffee brew using a liquid-liquid extraction without purification processes through analysing the obtained organic phase by GCMS in the single ion monitoring mode. The totals of single PAEs, in coffee brew samples analysed by us, are in the range of 159-5305 μg L-1 . Considering that, on average, a person drinks three cups (total 90 mL) of the aforementioned drink per day, this will lead to the uptake of a total 14 to 477 μg of phthalates.
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Affiliation(s)
- Diana Amorello
- Universita degli Studi di PalermoScienze e Tecnologie Biologiche, Chimiche e FarmaceuticheViale delle Scienze, Ed. 1790100PalermoItaly
| | - Roberta Indelicato
- Universita degli Studi di PalermoScienze e Tecnologie Biologiche, Chimiche e FarmaceuticheViale delle Scienze, Ed. 1790100PalermoItaly
| | - Salvatore Barreca
- Chemical Sciences DepartmentUniversity of CataniaViale Andrea Doria 695125CataniaItaly
| | - Santino Orecchio
- Universita degli Studi di PalermoScienze e Tecnologie Biologiche, Chimiche e FarmaceuticheViale delle Scienze, Ed. 1790100PalermoItaly
| | - Silvia Orecchio
- Universita degli Studi di PalermoScienze e Tecnologie Biologiche, Chimiche e FarmaceuticheViale delle Scienze, Ed. 1790100PalermoItaly
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11
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Androgen Receptor Gene CAG Repeat Length Varies and Affects Semen Quality in an Ethnic-Specific Fashion in Young Men from Russia. Int J Mol Sci 2022; 23:ijms231810594. [PMID: 36142533 PMCID: PMC9505661 DOI: 10.3390/ijms231810594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/04/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Male infertility is a multi-factorial and multi-genetic disorder, and the prevalence of male infertility in the world is estimated at 5–35%. The search for the causes of male infertility allowed for identifying a number of genetic factors including a single X-linked gene of the androgen receptor (AR), and some of its alleles are assumed to negatively affect male fertility. Our aim was (1) to study the variability of the length of CAG repeats of the AR gene and possible associations in the AR CAG genetic variants with semen quality and reproductive hormone levels in a population-based cohort of men and (2) to estimate distributions of AR CAG repeat alleles and associations with semen parameters in different ethnic subgroups. The cohort of 1324 young male volunteers of different ethnicities (median age 23.0 years) was recruited from the general population of five cities of the Russian Federation, regardless of their fertility status. Semen quality (sperm concentration, motility and morphology), reproductive hormone levels (testosterone, estradiol, LH, FSH and inhibin B) and trinucleotide (CAG) n repeat polymorphism in exon 1 of the AR gene were evaluated. The semen samples were analyzed according to the WHO laboratory manual (WHO, 2010), serum hormones were measured by enzyme immunoassay, and the AR CAG repeat length was analyzed by direct sequencing of leukocyte DNA. The median AR CAG repeat length in men of our multi-ethnic population was 23 (range 6–39). In the entire study population, a significant difference (p ≤ 0.05) was found in the frequency distribution and the mean values for the CAG repeat length between the groups with normal (23.2 ± 3.3) and impaired semen quality (23.9 ± 3.2). Additionally, we demonstrated that the total sperm count, sperm concentration, progressive motility and normal morphology were lower in the category of long CAG repeats (CAG ≥ 25) compared with those in the category of short CAG repeats (CAG ≤ 19); however, hormonal parameters did not differ between the long and short CAG categories, with the exception of estradiol. Significant differences were observed in the AR CAG repeat length between the most common ethnic cohorts of Slavs (Caucasians), Buryats (Asians), and Yakuts (Asians). The Buryats and Yakuts had a higher number of CAG repeats than the Slavs (medians: Slavs—23; Buryats—24; Yakuts—25). The range of alleles differed among ethnicities, with the Slavs having the largest range (7–36 repeats, 24 alleles total), the Yakuts having the smallest range (18–32 repeats, 14 alleles total) and the Buryats having the middle range (11–39 repeats, 20 alleles total). The longer CAG repeats were associated with an impaired semen quality within the Slavic (CAG ≥ 25) and Buryat (CAG ≥ 28) groups, but this effect was not found in Yakuts. Hormonal parameters did not differ between the three CAG repeat categories in men of all ethnic groups. This is the largest Russian study of the distribution of AR CAG repeats and the search for association between length of AR CAG repeat tract and impaired spermatogenesis in men from the general population. Our results confirmed the association of longer CAG repeats with a risk of impaired semen quality, but this association can be modified by ethnic origin. Identification of the number of AR CAG repeats can be an effective tool to assess the risk of male subfertility and the control of androgen hormone therapy of reproductive diseases.
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12
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Zhou J, Zhang Y, Zeng L, Wang X, Mu H, Wang M, Pan H, Su P. Paternal cadmium exposure affects testosterone synthesis by reducing the testicular cholesterol pool in offspring mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 242:113947. [PMID: 35999762 DOI: 10.1016/j.ecoenv.2022.113947] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/12/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Cadmium(Cd) is a heavy metal that is harmful to human health. Early studies have shown that cadmium can damage testicular structure, affecting testosterone synthesis and spermatogenesis. However, the effect of paternal Cd exposure on the reproductive system of offspring remains unclear. In this study, male 8-week C57BL/6 J mice were used as research objects, and Cd was injected intraperitoneally every other day at a dose of 1 mg/kg for 5 weeks, after which the effect on the reproductive system of offspring male mice was studied. Our results showed that the body weight of the offspring male mice increased faster, with increases of the testicular and epididymis indices under Cd exposure. At the same time, the serum testosterone and free cholesterol decreased, total cholesterol increased, and the sperm concentration decreased. Further qRT-PCR and western blot analyses showed that the expressions of StAR, P450scc, 3β-HSD and 17β-HSD, which are related to testosterone synthesis, was significantly downregulated. Additionally, ATGL, LDLR and SR-BI, which are related to the intracellular cholesterol pool were downregulated, leading to the reduction of the cholesterol pool and the accumulation of lipid droplets. Oil red O and BODIPY staining revealed an increase in the abundance of lipid droplets in testicular tissue of newborn and adult mice. Prediction of tsRNA target genes in the sperm of parents and testicular transcriptome of newborn mice showed that the differentially expressed genes were associated with catabolism of fatty acids, cholesterol and ion channels, while the mitochondrial and lysosome functions of testicular tissue of adult offspring mice were decreased. Overall, our results suggest that paternal Cd exposure reduced the intracellular cholesterol pool of testicular of offspring, affected testosterone synthesis and reproductive system development.
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Affiliation(s)
- Jinzhao Zhou
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Yanwei Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Ling Zeng
- Medical Genetics Center, Maternal and Child Health Hospital of Hubei Province, Wuhan, China.
| | - Xiaofei Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Hongbei Mu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Mei Wang
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, China.
| | - Hao Pan
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and echnology, Wuhan, China.
| | - Ping Su
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Wuhan Tongji Reproductive Medicine Hospital, Wuhan, China.
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13
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Role of p38 MAPK Signalling in Testis Development and Male Fertility. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6891897. [PMID: 36092154 PMCID: PMC9453003 DOI: 10.1155/2022/6891897] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 07/31/2022] [Accepted: 08/18/2022] [Indexed: 12/03/2022]
Abstract
The testis is an important male reproductive organ, which ensures reproductive function via the secretion of testosterone and the generation of spermatozoa. Testis development begins in the embryonic period, continues after birth, and generally reaches functional maturation at puberty. The stress-activated kinase, p38 mitogen-activated protein kinase (MAPK), regulates multiple cell processes including proliferation, differentiation, apoptosis, and cellular stress responses. p38 MAPK signalling plays a crucial role in testis development by regulating spermatogenesis, the fate determination of pre-Sertoli, and primordial germ cells during embryogenesis, the proliferation of testicular cells in the postnatal period, and the functions of mature Sertoli and Leydig cells. In addition, p38 MAPK signalling is involved in decreased male fertility when exposed to various harmful stimuli. This review will describe in detail the biological functions of p38 MAPK signalling in testis development and male reproduction, together with its pathological role in male infertility.
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14
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Ogunlade B, Gbotolorun SC, Adedotun OA, Iteire K, Adejayi J. Vanillic acid and vitamin C attenuated di-2-ethylhexyl phthalate-induced testicular toxicity in adult male rats. REPRODUCTION AND FERTILITY 2022; 3:220-230. [PMID: 35980228 PMCID: PMC9578065 DOI: 10.1530/raf-22-0045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 08/18/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract Di-2-ethylhexyl phthalate (DEHP) is an extensively used plasticizer which has raised some concerns about its safety on human health. This study aimed at evaluating the effects of vanillic acid (VA) and vitamin C (VC) supplementation on DEHP-induced testicular toxicity. Thirty-five adult male Wistar rats were randomly divided into 7 groups (A-G) (n = 5) receiving distilled water; 250 mg/kg bw of DEHP only; 30 mg/kg bw of VA and 250 mg/kg bw of DEHP; 30 mg/kg bw of VC and 250 mg/kg bw of DEHP; 30 mg/kg bw of DEHP plus 30 mg/kg bw of VA and 30 mg/kg bw of VC; 30 mg/kg bw of VA only; and 30 mg/kg bw of VC only, respectively. At the end of the experiment, blood was taken from the heart via cardiac puncture and stored, semen was collected from the caudal epididymis for immediate sperm analysis, while the testes were excised and preserved for histological examination and biochemical analysis. The results showed a significant decrease (P < 0.05) in body weights, sperm motility, sperm volume, sperm viability and count, antioxidant levels, and reproductive hormonal levels, with a significant increase (P < 0.05) in sperm morphological defect and lipid peroxidation level in DEHP-only group compared with the control but was ameliorated after VA and VC administration compared to the DEHP-only treated animals. VA and VC supplementation attenuated the toxic effects of DEHP on the testicular functions, morphology, and semen characterization of the experimental adult male Wistar rats. Lay summary Male infertility is considered when identifiable female causes of infertility are excluded and semen quantity and quality fail to fulfil World Health Organization criteria. From conception through to adulthood, people are exposed to limitless environmental toxicants among which di-2-ethylhexyl phthalate (DEHP) commonly found in personal care products, cosmetics, and medical devices is prevalent. The present study elaborated on the importance of taking antioxidant-rich foods containing vitamin C and vanillic acid, such as those found in various fruits, olives, whole wheat, and cereal grains, in combating infertility caused by environmental toxicants. An experiment was carried out on rats to see the effect of vanillic acid and vitamin C supplementation on preventing DEHP-induced testicular toxicity. The testicles and semen were analyzed from five rats in each treated and control groups. The data led us to conclude that vanillic acid and vitamin C supplementation do have attenuating effects on DEHP-induced testicular toxicity, due to their high antioxidant and anti-inflammatory properties.
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Affiliation(s)
- B Ogunlade
- Behavioral and Aging Lab, Human Anatomy Department, Federal University of Technology Akure, Ondo State, Nigeria
| | | | - O A Adedotun
- Behavioral and Aging Lab, Human Anatomy Department, Federal University of Technology Akure, Ondo State, Nigeria
| | - K Iteire
- Anatomy Department, University of Medical Sciences, Ondo City, Ondo State, Nigeria
| | - J Adejayi
- Behavioral and Aging Lab, Human Anatomy Department, Federal University of Technology Akure, Ondo State, Nigeria
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15
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Ikokide EJ, Oyagbemi AA, Oyeyemi MO. Impacts of cadmium on male fertility: Lessons learnt so far. Andrologia 2022; 54:e14516. [PMID: 35765120 DOI: 10.1111/and.14516] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 04/19/2022] [Accepted: 05/13/2022] [Indexed: 01/04/2023] Open
Abstract
Cadmium (Cd) is one of the most dangerous heavy metals in the world. Globally, toxicities associated with cadmium and its attendant negative impact on humans and animals cannot be under-estimated. Cd is a heavy metal, and people are exposed to it through contaminated foods and smoking. Cd exerts its deleterious impacts on the testes (male reproductive system) by inducing oxidative stress, spermatogenic cells apoptosis, testicular inflammation, decreasing androgenic and sperm cell functions, disrupting ionic homeostasis, pathways and epigenetic gene regulation, damaging vascular endothelium and blood testes barrier. In association with other industrial by-products, Cd has been incriminated for the recent decline of male fertility rate seen in both man and animals. Understanding the processes involved in Cd-induced testicular toxicity is vital for the innovation of techniques that will help ameliorate infertility in males. In this review, we summed up recent studies on the processes of testicular toxicity and male infertility due to Cd exposure. Also, the usage of different compounds including phytochemicals, and plant extracts to manage Cd reprotoxicity will be reviewed.
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Affiliation(s)
- Emmanuel Joseph Ikokide
- Department of Theriogenology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Ademola Adetokunbo Oyagbemi
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
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Belmonte-Tebar A, San Martin Perez E, Nam Cha S, Soler Valls AJ, Singh ND, de la Casa-Esperon E. Diet effects on mouse meiotic recombination: a warning for recombination studies. Genetics 2022; 220:iyab190. [PMID: 34791205 PMCID: PMC8733447 DOI: 10.1093/genetics/iyab190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/21/2021] [Indexed: 11/13/2022] Open
Abstract
Meiotic recombination is a critical process for sexually reproducing organisms. This exchange of genetic information between homologous chromosomes during meiosis is important not only because it generates genetic diversity, but also because it is often required for proper chromosome segregation. Consequently, the frequency and distribution of crossovers are tightly controlled to ensure fertility and offspring viability. However, in many systems, it has been shown that environmental factors can alter the frequency of crossover events. Two studies in flies and yeast point to nutritional status affecting the frequency of crossing over. However, this question remains unexplored in mammals. Here, we test how crossover frequency varies in response to diet in Mus musculus males. We use immunohistochemistry to estimate crossover frequency in multiple genotypes under two diet treatments. Our results indicate that while crossover frequency was unaffected by diet in some strains, other strains were sensitive even to small composition changes between two common laboratory chows. Therefore, recombination is both resistant and sensitive to certain dietary changes in a strain-dependent manner and, hence, this response is genetically determined. Our study is the first to report a nutrition effect on genome-wide levels of recombination. Moreover, our work highlights the importance of controlling diet in recombination studies and may point to diet as a potential source of variability among studies, which is relevant for reproducibility.
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Affiliation(s)
- Angela Belmonte-Tebar
- Regional Center for Biomedical Research (C.R.I.B.), University of Castilla-La Mancha, Albacete 02008, Spain
| | - Estefania San Martin Perez
- Regional Center for Biomedical Research (C.R.I.B.), University of Castilla-La Mancha, Albacete 02008, Spain
| | - Syonghyun Nam Cha
- Pathology Department and Biobank of Albacete, University Hospital Complex of Albacete, Albacete 02006, Spain
| | | | - Nadia D Singh
- Department of Biology, Institute of Ecology and Evolution, University of Oregon, Eugene, OR 97403, USA
| | - Elena de la Casa-Esperon
- Regional Center for Biomedical Research (C.R.I.B.), University of Castilla-La Mancha, Albacete 02008, Spain
- Department of Inorganic and Organic Chemistry and Biochemistry, School of Pharmacy, University of Castilla-La Mancha, Albacete 02071, Spain
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Mustafa M, Dar SA, Azmi S, Haque S. The Role of Environmental Toxicant-Induced Oxidative Stress in Male Infertility. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1391:17-32. [PMID: 36472814 DOI: 10.1007/978-3-031-12966-7_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Infertility is a serious public health issue affecting around 15% of couples globally. Of the 60-80 million people of reproductive age affected by infertility, 40-50% are due to male factor while 30-40% of cases are still idiopathic. The recent global deterioration in sperm quality raises apprehensions regarding the toxic effects of environmental pollutants on reproductive health of males. Environmental toxicants have shown strong evidences for inducing oxidative stress affecting spermatogenesis severely, thereby leading to reduced sperm motility, count, and DNA damage. Reactive oxygen species (ROS) influences the spermatozoa development and transit process both internally and externally. Low level of ROS is indispensable for critical physiological sperm processes like sperm capacitation, motility, acrosome reaction, hyper-activation, sperm-oocyte interaction, etc., while excessive ROS disrupt antioxidant molecules which is detrimental to normal functioning of the sperm. Hence, identification of potential environmental toxicant may have clinical relevance for early screening and diagnosis of male infertility.
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Affiliation(s)
- Mohammad Mustafa
- Scientific Research Centre, Prince Sultan Military Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Sajad Ahmad Dar
- Research and Scientific Studies Unit, College of Nursing, Jazan University, Jazan, Kingdom of Saudi Arabia
| | - Sarfuddin Azmi
- Scientific Research Centre, Prince Sultan Military Medical City, Riyadh, Kingdom of Saudi Arabia
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing, Jazan University, Jazan, Kingdom of Saudi Arabia.
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18
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Karacaoğlu E. Flusilazole-induced damage to SerW3 cells via cytotoxicity, oxidative stress and lipid metabolism: An in vitro study. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 180:104998. [PMID: 34955182 DOI: 10.1016/j.pestbp.2021.104998] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/25/2021] [Accepted: 11/17/2021] [Indexed: 06/14/2023]
Abstract
Flusilazole (C16H15F2N3Si) is a triazole fungicide and it is being used widely in recent years to control fungal infections in various fruits and vegetables. This study aims to evaluate the impact of flusilazole on cytotoxicity, ATP-dependent cassette transporter proteins (ABC transporter proteins) in SerW3 cells. In this study, SerW3 cells have administrated with 25, 100, and 200 μM flusilazole, cell viability was performed. The quantity of the cellular lipids was evaluated spectrophotometrically. Moreover, the expression of the ABCA1 and ABCB1 proteins determined by immunofluorescence microscopy. Furtherly, evaluation of the cell death type and measurement of the activity of the antioxidant enzymes was performed. According to the results, flusilazole treatment gave rise to inhibition in cell viability, increase in apoptotic cell number, reduction in cellular lipids, and inhibition in the expression of ABCA1 and ABCB1 proteins. Furthermore, it caused decreases in antioxidant enzyme activities. It may be concluded that flusilazole administration may cause infertility/subfertility. The mechanism of action can be due to cytotoxicity, impairment of the detoxification mechanisms, lipid metabolism, and dysregulation of cell functions.
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Affiliation(s)
- Elif Karacaoğlu
- Hacettepe University, Faculty of Science, Department of Biology, 06800, Beytepe, Ankara, Turkey.
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19
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Wang Y, Xie Z. Exploring the role of gut microbiome in male reproduction. Andrology 2021; 10:441-450. [PMID: 34918486 DOI: 10.1111/andr.13143] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/02/2021] [Accepted: 12/07/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND The impact of the gut microbiome on the organism has become a growing research focus with the development of 16S rRNA sequencing. However, the effect of the gut microbiome in male reproduction has yet to be investigated. OBJECTIVE To overview on possible mechanisms by which gut microbiome could affect male reproduction and therapeutic opportunities related to the gut microbiome METHODS: Authors searched PubMed/MEDLINE, EMBASE, Web of Science, Cochrane Library for medical subject headings terms and free text words referred to "male infertility" "testis" "gut microbiome" "insulin resistance" "erectile dysfunction" "therapy" "sex hormones" "Genital Diseases." until Dec 2nd 2021. RESULTS Evidence suggests that immune system activation caused by the gut microbiome translocation not only leads to testicular and epididymal inflammation but can also induce insulin resistance together with gastrointestinal hormones such as leptin and ghrelin, which in turn affects the secretion of various sex hormones such as LH, FSH, and T to regulate spermatogenesis. In addition, the gut microbiome can influence spermatogenesis by controlling and metabolizing androgens as well as affecting the blood-testis barrier. It also promotes vascular inflammation by raising trimethylamine-N-oxide (TMAO) levels in the blood, which causes erectile dysfunction. Testicular microbiome and gut microbiome can interact to influence male reproductive function. This study discusses therapeutic options such as probiotics, prebiotics, and fecal microbiota transplantation, as well as the challenges and opportunities behind ongoing research, and emphasizes the need for additional research in the future to demonstrate the links and underlying mechanisms between gut microbiome and male reproduction. Therapeutic options such as probiotic, prebiotics and fecal microbiota transplantation are potential treatments for male infertility. DISCUSSION AND CONCLUSION Gut microbiota may have a causal role in male reproduction health, therapeutic strategies such as supplementation with appropriate probiotics could be undertaken as a complementary treatment. In the future, additional research is needed to demonstrate the links and underlying mechanisms between gut microbiome and male reproduction. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yan Wang
- Zhejiang Chinese Medical University, Second Clinical Medical School, Zhejiang, 310053, China
| | - Zuogang Xie
- Wenzhou Hospital of Integrated Chinese and Western Medicine Affiliated to Zhejiang, University of Traditional Chinese Medicine, Andrology, Zhejiang, 325000, China
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20
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Zeng L, Zhou J, Wang X, Zhang Y, Wang M, Su P. Cadmium attenuates testosterone synthesis by promoting ferroptosis and blocking autophagosome-lysosome fusion. Free Radic Biol Med 2021; 176:176-188. [PMID: 34610361 DOI: 10.1016/j.freeradbiomed.2021.09.028] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 09/13/2021] [Accepted: 09/30/2021] [Indexed: 12/31/2022]
Abstract
Ferroptosis is a newly defined programmed cell death pathway characterized by iron overload and lipid peroxidation. Increasing studies show that autophagy regulates testosterone synthesis and promotes ferroptosis. Testosterone is essential for sexual development and the maintenance of male characteristics. The deficiency of testosterone induced by cadmium (Cd) can severely affect male fertility. However, the underlying mechanism of testosterone reduction after Cd exposure remains blurry. In this study, we found that Cd affected iron homeostasis and elicited ferroptosis, ultimately reducing testosterone production. Mechanically, our findings revealed that Cd-induced ferroptosis depended upon the excessive activation of Heme oxygenase 1 (HMOX1) and the release of free iron from heme. Additionally, Cd exposure promoted autophagosome formation but blocked autophagosome-lysosome fusion, which attenuated the absorption of total cholesterol and triglycerides, further aggravating testosterone synthesis disorder. Collectively, Cd induced ferroptosis by iron homeostasis dysregulation, mediated by excessive activation of HMOX-1. The disruption of autophagy flow contributed to Cd-induced testicular dysfunction and attenuated testosterone synthesis.
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Affiliation(s)
- Ling Zeng
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China.
| | - Jinzhao Zhou
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China.
| | - Xiaofei Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China.
| | - Yanwei Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China.
| | - Mei Wang
- Reproductive Medicine Center, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei, PR China; Reproductive Endocrine Unit, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA.
| | - Ping Su
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, PR China.
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21
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Ješeta M, Navrátilová J, Franzová K, Fialková S, Kempisty B, Ventruba P, Žáková J, Crha I. Overview of the Mechanisms of Action of Selected Bisphenols and Perfluoroalkyl Chemicals on the Male Reproductive Axes. Front Genet 2021; 12:692897. [PMID: 34646297 PMCID: PMC8502804 DOI: 10.3389/fgene.2021.692897] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 09/13/2021] [Indexed: 12/17/2022] Open
Abstract
Male fertility has been deteriorating worldwide for considerable time, with the greatest deterioration recorded mainly in the United States, Europe countries, and Australia. That is, especially in countries where an abundance of chemicals called endocrine disruptors has repeatedly been reported, both in the environment and in human matrices. Human exposure to persistent and non-persistent chemicals is ubiquitous and associated with endocrine-disrupting effects. This group of endocrine disrupting chemicals (EDC) can act as agonists or antagonists of hormone receptors and can thus significantly affect a number of physiological processes. It can even negatively affect human reproduction with an impact on the development of gonads and gametogenesis, fertilization, and the subsequent development of embryos. The negative effects of endocrine disruptors on sperm gametogenesis and male fertility in general have been investigated and repeatedly demonstrated in experimental and epidemiological studies. Male reproduction is affected by endocrine disruptors via their effect on testicular development, impact on estrogen and androgen receptors, potential epigenetic effect, production of reactive oxygen species or direct effect on spermatozoa and other cells of testicular tissue. Emerging scientific evidence suggests that the increasing incidence of male infertility is associated with the exposure to persistent and non-persistent endocrine-disrupting chemicals such as bisphenols and perfluoroalkyl chemicals (PFAS). These chemicals may impact men’s fertility through various mechanisms. This study provides an overview of the mechanisms of action common to persistent (PFAS) and nonpersistent (bisphenols) EDC on male fertility.
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Affiliation(s)
- Michal Ješeta
- Department of Obstetrics and Gynecology, Faculty of Medicine Masaryk University and University Hospital Brno, Brno, Czechia.,Department of Veterinary Sciences, Czech University of Life Sciences Prague, Prague, Czechia
| | - Jana Navrátilová
- RECETOX Centre, Faculty of Science, Masaryk University, Brno, Czechia
| | - Kateřina Franzová
- Department of Obstetrics and Gynecology, Faculty of Medicine Masaryk University and University Hospital Brno, Brno, Czechia
| | - Sandra Fialková
- RECETOX Centre, Faculty of Science, Masaryk University, Brno, Czechia
| | - Bartozs Kempisty
- Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland.,Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland.,Department of Veterinary Medicine, Nicolaus Copernicus University, Torun, Poland.,Prestage Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC, United States
| | - Pavel Ventruba
- Department of Obstetrics and Gynecology, Faculty of Medicine Masaryk University and University Hospital Brno, Brno, Czechia
| | - Jana Žáková
- Department of Obstetrics and Gynecology, Faculty of Medicine Masaryk University and University Hospital Brno, Brno, Czechia
| | - Igor Crha
- Department of Obstetrics and Gynecology, Faculty of Medicine Masaryk University and University Hospital Brno, Brno, Czechia.,Department of Nursing and Midwifery, Faculty of Medicine, Masaryk University, Brno, Czechia
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22
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Montano L, Donato F, Bianco PM, Lettieri G, Guglielmino A, Motta O, Bonapace IM, Piscopo M. Semen quality as a potential susceptibility indicator to SARS-CoV-2 insults in polluted areas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:37031-37040. [PMID: 34053043 PMCID: PMC8164491 DOI: 10.1007/s11356-021-14579-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/21/2021] [Indexed: 05/11/2023]
Abstract
The epidemic of the new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has impacted worldwide with its infectious spread and mortality rate. Thousands of articles have been published to tackle this crisis and many of these have indicated that high air pollution levels may be a contributing factor to high outbreak rates of COVID-19. Atmospheric pollutants, indeed, producing oxidative stress, inflammation, immuno-unbalance, and systemic coagulation, may be a possible significant co-factor of further damage, rendering the body prone to infections by a variety of pathogens, including viruses. Spermatozoa are extremely responsive to prooxidative effects produced by environmental pollutants and may serve as a powerful alert that signals the extent that environmental pressure, in a specific area, is doing damage to humans. In order to improve our current knowledge on this topic, this review article summarizes the relevant current observations emphasizing the weight that environmental pollution has on the sensitivity of a given population to several diseases and how semen quality, may be a potential indicator of sensitivity for virus insults (including SARS-CoV-2) in high polluted areas, and help to predict the risk for harmful effects of the SARS-CoV-2 epidemic. In addition, this review focused on the potential routes of virus transmission that may represent a population health risk and also identified the areas of critical importance that require urgent research to assess and manage the COVID-19 outbreak.
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Affiliation(s)
- Luigi Montano
- Andrology Unit, EcoFoodFertility Project, Coordination Unit, Local Health Authority (ASL) Salerno, Oliveto Citra, Via M. Clemente, 84020 Oliveto Citra, SA Italy
| | - Francesco Donato
- Department of Medical and Surgical Specialties Radiological Sciences and Public Health, Unit of Hygiene, Epidemiology, and Public Health, University of Brescia, Brescia, Italy
| | - Pietro Massimiliano Bianco
- ISPRA, Italian Institute for Environmental Protection and Research, Via Vitaliano Brancati 60, 00144 Rome, Italy
| | - Gennaro Lettieri
- Department of Biology, University of Naples Federico II, Via Cinthia 21, 80126 Napoli, Italy
| | | | - Oriana Motta
- Department of Medicine, Surgery and Dentistry, University of Salerno, Fisciano, Italy
| | - Ian Marc Bonapace
- Department of Biotechnology and Life Sciences, University of Insubria (VA), Varese, Italy
| | - Marina Piscopo
- Department of Biology, University of Naples Federico II, Via Cinthia 21, 80126 Napoli, Italy
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23
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Montano L, Donato F, Bianco PM, Lettieri G, Guglielmino A, Motta O, Bonapace IM, Piscopo M. Air Pollution and COVID-19: A Possible Dangerous Synergy for Male Fertility. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18136846. [PMID: 34202243 PMCID: PMC8297116 DOI: 10.3390/ijerph18136846] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 12/11/2022]
Abstract
Several studies indicate that semen quality has strongly declined in the last decades worldwide. Air pollution represents a significant co-factor with the COVID-19 impact and has negative effects on the male reproductive system, through pro-oxidant, inflammatory and immune-dysregulating mechanisms. It has recently been reported that chronic exposure to PM2.5 causes overexpression of the alveolar ACE2 receptor, the entry route of SARS-CoV-2 into the organism shared by the lungs and testis where expression is highest in the body. In the testis, the ACE2/Ang-(1-7)/MasR pathway plays an important role in the regulation of spermatogenesis and an indirect mechanism of testicular damage could be due to the blockade of the ACE2 receptor by SARS-CoV-2. This prevents the conversion of specific angiotensins, and their excess causes inflammation with the overproduction of cytokines. PM2.5-induced overexpression of the alveolar ACE2 receptor, in turn, could increase local viral load in patients exposed to pollutants, producing ACE2 receptor depletion and compromising host defenses. By presenting an overall view of epidemiological data and molecular mechanisms, this manuscript aims to interpret the possible synergistic effects of both air pollution and COVID-19 on male reproductive function, warning that the spread of SARS-CoV-2 in the fertile years may represent a significant threat to global reproductive health. All of this should be of great concern, especially for men of the age of maximum reproductive capacity, and an important topic of debate for policy makers. Altered environmental conditions, together with the direct and indirect short- and long-term effects of viral infection could cause a worsening of semen quality with important consequences for male fertility, especially in those areas with higher environmental impact.
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Affiliation(s)
- 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 (EcoFoodFertility Project), “Oliveto Citra Hospital”, 84020 Oliveto Citra, Italy
- PhD Program in Evolutionary Biology and Ecology, Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy
- Correspondence: (L.M.); (I.M.B.); (M.P.); Tel.: +39-0331-339452 (I.M.B.); +39-0816-79081 (M.P.)
| | - Francesco Donato
- Unit of Hygiene, Epidemiology, and Public Health, Department of Medical and Surgical Specialties Radiological Sciences and Public Health, University of Brescia, 21100 Brescia, Italy;
| | - Pietro Massimiliano Bianco
- ISPRA, Italian Institute for Environmental Protection and Research, Via Vitaliano Brancati 60, 00144 Roma, Italy;
| | - Gennaro Lettieri
- Department of Biology, University of Naples Federico II, 80126 Napoli, Italy;
| | | | - Oriana Motta
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Salerno, Italy;
| | - Ian Marc Bonapace
- Department of Biotechnology and Life Sciences, University of Insubria, 21100 Varese, Italy
- Correspondence: (L.M.); (I.M.B.); (M.P.); Tel.: +39-0331-339452 (I.M.B.); +39-0816-79081 (M.P.)
| | - Marina Piscopo
- Department of Biology, University of Naples Federico II, 80126 Napoli, Italy;
- Correspondence: (L.M.); (I.M.B.); (M.P.); Tel.: +39-0331-339452 (I.M.B.); +39-0816-79081 (M.P.)
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24
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Khamehiee N, Jazireian P, Ebrahimi B, Alizadeh A, Shahhoseini M. Paternal trans-fatty acid and vitamin E diet affects rat offspring's semen quality and PPARs expression. Andrologia 2021; 53:e14082. [PMID: 33905135 DOI: 10.1111/and.14082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 02/28/2021] [Accepted: 04/09/2021] [Indexed: 11/29/2022] Open
Abstract
Trans-fatty acids (TFAs) consumption has created concerns regarding male/female reproductive system. However, the effects of TFA in paternal diet on offspring's reproduction have not been addressed. The purpose of this study is to investigate the effects of rat paternal TFAs and vitamin E consumption on offspring's sperm quality and expression pattern of peroxisome proliferator-activated receptors (PPARs) in testis tissues. Forty adult male rats were randomly divided into four groups: Control diet (C); Control diet plus TFA (CTH); diet supplemented with vitamin E (E) and a diet containing vitamin E and TFA (ETH). Mother rats had normal diet during gestation period. Three offspring from each group were chosen randomly and their testicular samples were collected, and sperm parameters were measured by CASA. Our results indicate that feeding fathers with TFA can negatively affect offspring's sperm concentration and motility, while consumption of vitamin E can improve these parameters (p < .05). The paternal diet containing TFA down-regulated the expression of PPARβ and PPARγ genes, whereas vitamin E-containing diet up-regulated the transcription of PPAR genes. In conclusion, TFA intake in paternal diet may have negative effects on reproductive system of the offspring while vitamin E may not diminish these effects.
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Affiliation(s)
- Narges Khamehiee
- Department of Genetics, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Parham Jazireian
- Department of Genetics, Reproductive Biomedicine Research Centre, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Bita Ebrahimi
- Department of Embryology, Reproductive Biomedicine Research Centre, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - AliReza Alizadeh
- Department of Embryology, Reproductive Biomedicine Research Centre, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Maryam Shahhoseini
- Department of Genetics, Reproductive Biomedicine Research Centre, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.,Reproductive Epidemiology Research Centre, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.,Department of Cell and Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
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25
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Osadchuk L, Shantanova L, Troev I, Kleshchev M, Osadchuk A. Regional and ethnic differences in semen quality and reproductive hormones in Russia: A Siberian population-based cohort study of young men. Andrology 2021; 9:1512-1525. [PMID: 33884771 PMCID: PMC8596582 DOI: 10.1111/andr.13024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 04/12/2021] [Accepted: 04/16/2021] [Indexed: 12/28/2022]
Abstract
Background This is the first large‐scale Russian study describing semen quality and reproductive hormone levels among young men. Objectives The aim of the study was to compare semen quality and reproductive hormone levels in young men of four cities and three ethnic groups living in the Siberian region of Russia and to find out ethnic or environmental reasons for regional differences. Materials and methods The study population consisted of 1291 young men from Novosibirsk, Kemerovo, Ulan‐Ude, and Yakutsk, including 1013 men of three most numerous ethnic groups: Slavs, Buryats, and Yakuts. Each participant provided one sperm and blood sample, information about lifestyle and ethnicity. Anthropometric parameters, semen quality and reproductive hormone levels, were evaluated. Results Significant regional and ethnic differences were detected for semen and reproductive hormone parameters. Median sperm concentrations in Novosibirsk, Kemerovo, Ulan‐Ude, and Yakutsk were 54.6, 39.9, 34.7, 33.1 × 106/ml; total sperm counts—202.5, 138.7, 97.9, 93.4 × 106; percentages of morphologically normal spermatozoa—7.8%, 6.5%, 6.3%, 5.0%, respectively. Median sperm concentrations in Slavs, Buryats, and Yakuts were 43.7, 37.0, 30.6 × 106/ml; total sperm counts—150.0, 102.3 and 74.8 × 106; percentages of morphologically normal spermatozoa—6.8%, 6.8%, 4.8%, respectively. Discussion The young men in Novosibirsk and Kemerovo, populated by Slavs, had a higher semen quality compared to Ulan‐Ude and Yakutsk, populated by Buryats and Yakuts, apparently due to the higher testicular function in Slavic compared to Asian ethnicity. Impaired spermatogenesis in young men in Kemerovo compared to Novosibirsk, located in the same climatic zone and having a socio‐cultural and ethnic identity, may be due to the influence of a polluted environment. Conclusion The findings suggest that ethnic composition and environment may be responsible for regional differences in semen and reproductive hormone parameters.
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Affiliation(s)
- Ludmila Osadchuk
- Federal Research Center 'Institute of Cytology and Genetics', the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Larisa Shantanova
- Institute of General and Experimental Biology, the Siberian Branch of the Russian Academy of Sciences, Ulan-Ude, Russia
| | - Ivan Troev
- M.K. Ammosov North-Eastern Federal University, Yakutsk, Russia
| | - Maxim Kleshchev
- Federal Research Center 'Institute of Cytology and Genetics', the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander Osadchuk
- Federal Research Center 'Institute of Cytology and Genetics', the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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26
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Messina M, Mejia SB, Cassidy A, Duncan A, Kurzer M, Nagato C, Ronis M, Rowland I, Sievenpiper J, Barnes S. Neither soyfoods nor isoflavones warrant classification as endocrine disruptors: a technical review of the observational and clinical data. Crit Rev Food Sci Nutr 2021; 62:5824-5885. [PMID: 33775173 DOI: 10.1080/10408398.2021.1895054] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Soybeans are a rich source of isoflavones, which are classified as phytoestrogens. Despite numerous proposed benefits, isoflavones are often classified as endocrine disruptors, based primarily on animal studies. However, there are ample human data regarding the health effects of isoflavones. We conducted a technical review, systematically searching Medline, EMBASE, and the Cochrane Library (from inception through January 2021). We included clinical studies, observational studies, and systematic reviews and meta-analyses (SRMA) that examined the relationship between soy and/or isoflavone intake and endocrine-related endpoints. 417 reports (229 observational studies, 157 clinical studies and 32 SRMAs) met our eligibility criteria. The available evidence indicates that isoflavone intake does not adversely affect thyroid function. Adverse effects are also not seen on breast or endometrial tissue or estrogen levels in women, or testosterone or estrogen levels, or sperm or semen parameters in men. Although menstrual cycle length may be slightly increased, ovulation is not prevented. Limited insight could be gained about possible impacts of in utero isoflavone exposure, but the existing data are reassuring. Adverse effects of isoflavone intake were not identified in children, but limited research has been conducted. After extensive review, the evidence does not support classifying isoflavones as endocrine disruptors.
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Affiliation(s)
- Mark Messina
- Department of Nutrition, Loma Linda University, Loma Linda, California, USA
| | - Sonia Blanco Mejia
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Aedin Cassidy
- Nutrition and Preventive Medicine, Queen's University, Belfast, Northern Ireland, UK
| | - Alison Duncan
- College of Biological Sciences, University of Guelph, Guelph, Canada
| | - Mindy Kurzer
- Department of Food Science and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA
| | - Chisato Nagato
- Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Martin Ronis
- Health Sciences Center, Louisiana State University Health Sciences Center, Baton Rouge, New Orleans, USA
| | - Ian Rowland
- Human Nutrition, University of Reading, Reading, England, UK
| | | | - Stephen Barnes
- Department of Pharmacology and Toxicology, University of Alabama, Alabama, USA
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27
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Pourheydar M, Hasanzadeh S, Razi M, Pourheydar B, Najafi G. Effects of liraglutide on sperm characteristics and fertilization potential following experimentally induced diabetes in mice. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2021; 12:109-116. [PMID: 33953881 PMCID: PMC8094147 DOI: 10.30466/vrf.2019.96822.2315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 06/01/2019] [Indexed: 11/18/2022]
Abstract
The current study was conducted to analyze the dose-dependent effects of liraglutide against the diabetes-induced detrimental impact on sperm parameters and fertilization potential. For this purpose, 42 adult male mice were randomly divided into control (with no intervention) and experimental groups. Next, the experimental group was subdivided into diabetic, 1.20 mg kg-1 liraglutide-received diabetic, 1.80 mg kg-1 liraglutide-received diabetic, 1.20 mg kg-1 liraglutide-received non-diabetic and 1.80 mg kg-1 liraglutide-received non-diabetic groups. All chemicals were administrated subcutaneously. Following 42 days, the animals were euthanized, and sperm samples were collected. The sperm count, motility, viability, DNA integrity, and maturity were analyzed and compared between groups. Moreover, the sperm fertilization potential was investigated by in vitro fertilization (IVF). For this purpose, the preimplantation embryo development at 2-cell, 4-cell, morula, and blastocyst stages was investigated and compared. Observations revealed that diabetes significantly diminished sperm count, motility, viability, chromatin condensation, and DNA integrity percentages versus a control group. On the other hand, 1.20 mg kg-1 and 1.80 mg kg-1 of liraglutide did not improve sperm motility and viability, while ameliorated sperm count and chromatin condensation and DNA integrity in diabetic animals. The diabetic animals represented diminished preimplantation embryo development, which was not altered in liraglutide-received groups. In conclusion, at least in administrated doses, liraglutide could not improve the sperm viability and motility and, via this mechanism, could not induce an appropriate/beneficial effect on IVF outcome.
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Affiliation(s)
- Maryam Pourheydar
- Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Shapour Hasanzadeh
- Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Mazdak Razi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Bagher Pourheydar
- Department of Anatomical Sciences, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Gholamreza Najafi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
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28
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Iftikhar M, Noureen A, Uzair M, Jabeen F, Abdel Daim M, Cappello T. Perspectives of Nanoparticles in Male Infertility: Evidence for Induced Abnormalities in Sperm Production. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18041758. [PMID: 33670275 PMCID: PMC7918762 DOI: 10.3390/ijerph18041758] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/05/2021] [Accepted: 02/07/2021] [Indexed: 12/16/2022]
Abstract
Advancement in the field of nanotechnology has prompted the need to elucidate the deleterious effects of nanoparticles (NPs) on reproductive health. Many studies have reported on the health safety issues related to NPs by investigating their exposure routes, deposition and toxic effects on different primary and secondary organs but few studies have focused on NPs’ deposition in reproductive organs. Noteworthy, even fewer studies have dealt with the toxic effects of NPs on reproductive indices and sperm parameters (such as sperm number, motility and morphology) by evaluating, for instance, the histopathology of seminiferous tubules and testosterone levels. To date, the research suggests that NPs can easily cross the blood testes barrier and, after accumulation in the testis, induce adverse effects on spermatogenesis. This review aims to summarize the available literature on the risks induced by NPs on the male reproductive system.
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Affiliation(s)
- Mehwish Iftikhar
- Department of Zoology, Government College University, Faisalabad 38000, Pakistan; (M.I.); (F.J.)
| | - Aasma Noureen
- Department of Biology, Virtual University of Pakistan, Faisalabad 38000, Pakistan
- Correspondence: (A.N.); (T.C.)
| | - Muhammad Uzair
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China;
| | - Farhat Jabeen
- Department of Zoology, Government College University, Faisalabad 38000, Pakistan; (M.I.); (F.J.)
| | - Mohamed Abdel Daim
- Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Pharmacology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt;
| | - Tiziana Cappello
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166 Messina, Italy
- Correspondence: (A.N.); (T.C.)
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29
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Gao S, Wu X, Wang L, Bu T, Perrotta A, Guaglianone G, Silvestrini B, Sun F, Cheng CY. Signaling Proteins That Regulate Spermatogenesis Are the Emerging Target of Toxicant-Induced Male Reproductive Dysfunction. Front Endocrinol (Lausanne) 2021; 12:800327. [PMID: 35002976 PMCID: PMC8739942 DOI: 10.3389/fendo.2021.800327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 11/22/2021] [Indexed: 12/05/2022] Open
Abstract
There is emerging evidence that environmental toxicants, in particular endocrine disrupting chemicals (EDCs) such as cadmium and perfluorooctanesulfonate (PFOS), induce Sertoli cell and testis injury, thereby perturbing spermatogenesis in humans, rodents and also widelife. Recent studies have shown that cadmium (e.g., cadmium chloride, CdCl2) and PFOS exert their disruptive effects through putative signaling proteins and signaling cascade similar to other pharmaceuticals, such as the non-hormonal male contraceptive drug adjudin. More important, these signaling proteins were also shown to be involved in modulating testis function based on studies in rodents. Collectively, these findings suggest that toxicants are using similar mechanisms that used to support spermatogenesis under physiological conditions to perturb Sertoli and testis function. These observations are physiologically significant, since a manipulation on the expression of these signaling proteins can possibly be used to manage the toxicant-induced male reproductive dysfunction. In this review, we highlight some of these findings and critically evaluate the possibility of using this approach to manage toxicant-induced defects in spermatrogenesis based on recent studies in animal models.
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Affiliation(s)
- Sheng Gao
- Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Reproductive Medicine, Nantong University School of Medicine, Nantong, China
| | - Xiaolong Wu
- Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Reproductive Medicine, Nantong University School of Medicine, Nantong, China
| | - Lingling Wang
- Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Reproductive Medicine, Nantong University School of Medicine, Nantong, China
| | - Tiao Bu
- Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Reproductive Medicine, Nantong University School of Medicine, Nantong, China
| | - Adolfo Perrotta
- Department of Translational & Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Giuseppe Guaglianone
- Department of Hospital Pharmacy, “Azienda Sanitaria Locale (ASL) Roma 4”, Civitavecchia, Italy
| | - Bruno Silvestrini
- Institute of Pharmacology and Pharmacognosy, Sapienza University of Rome, Rome, Italy
| | - Fei Sun
- Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- *Correspondence: C. Yan Cheng, ; Fei Sun,
| | - C. Yan Cheng
- Department of Urology and Andrology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Institute of Reproductive Medicine, Nantong University School of Medicine, Nantong, China
- *Correspondence: C. Yan Cheng, ; Fei Sun,
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Krzastek SC, Farhi J, Gray M, Smith RP. Impact of environmental toxin exposure on male fertility potential. Transl Androl Urol 2020; 9:2797-2813. [PMID: 33457251 PMCID: PMC7807371 DOI: 10.21037/tau-20-685] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 10/18/2020] [Indexed: 11/06/2022] Open
Abstract
Idiopathic infertility is the most common individual diagnosis in male infertility, representing nearly 44% of cases. Research studies dating over the last half-century consistently demonstrate a decline in male fertility that is incompletely explained by obesity, known genetic causes, or diet and lifestyle changes alone. Human exposures have changed dramatically over the same time course as this fertility decline. Synthetic chemicals surround us. Some are benevolent; however, many are known to cause disruption of the hypothalamic-pituitary-gonadal axis and impair spermatogenesis. More than 80,000 chemicals are registered with the United States National Toxicology Program and nearly 2,000 new chemicals are introduced each year. Many of these are known toxins, such as phthalates, polycyclic aromatic hydrocarbons, aromatic amines, and organophosphate esters, and have been banned or significantly restricted by other countries as they carry known carcinogenic effects and are reproductively toxic. In the United States, many of these chemicals are still permissible in exposure levels known to cause reproductive harm. This contrasts to other chemical regulatory legislature, such as the European Union's REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations which are more comprehensive and restrictive. Quantification of these diverse exposures on an individual level has proven challenging, although forthcoming technologies may soon make this data available to consumers. Establishing causality and the proportion of idiopathic infertility attributable to environmental toxin exposures remains elusive, however, continued investigation, avoidance of exposure, and mitigation of risk is essential to our reproductive health. The aim of this review is to examine the literature linking changes in male fertility to some of the most common environmental exposures. Specifically, pesticides and herbicides such as dichlorodiphenyltrichloroethane (DDT), dibromochloropropane (DBCP), organophosphates and atrazine, endocrine disrupting compounds including plastic compounds phthalates and bisphenol A (BPA), heavy metals, natural gas/oil, non-ionizing radiation, air and noise pollution, lifestyle factors including diet, obesity, caffeine use, smoking, alcohol and drug use, as well as commonly prescribed medications will be discussed.
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Affiliation(s)
- Sarah C. Krzastek
- Department of Urology, University of Virginia, Charlottesville, VA, USA
- Division of Urology, Virginia Commonwealth University, Richmond, VA, USA
- Division of Urology, Hunter Holmes McGuire VAMC, Richmond, VA, USA
| | - Jack Farhi
- Department of Urology, University of Virginia, Charlottesville, VA, USA
| | - Marisa Gray
- Department of Urology, University of Virginia, Charlottesville, VA, USA
| | - Ryan P. Smith
- Department of Urology, University of Virginia, Charlottesville, VA, USA
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Ogunlade B, Adelakun S, Iteire K. Sulforaphane response on aluminum-induced oxidative stress, alterations in sperm characterization and testicular histomorphometry in Wistar rats. Int J Reprod Biomed 2020; 18:611-624. [PMID: 32923928 PMCID: PMC7457154 DOI: 10.18502/ijrm.v13i8.7503] [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: 09/15/2019] [Revised: 12/04/2019] [Accepted: 03/03/2020] [Indexed: 11/24/2022] Open
Abstract
Background The exposure of male individual to environmental toxicant is regarded as a channel that results in reduced sperm counts and infertility.
Objective This study investigated the ameliorative response of Sulforaphane (SFN) on Aluminum trichloride (AlCl3) induced testicular toxicity in adult male Wistar rats. Materials and Methods A total of 32 adult male Wistar rats (180-200 gm between 8-10 wk) were divided into four groups (n = 8/each). Group A) received distilled water orally as placebo; Group B) received 100 mg/kgbw AlCl3 only orally; Group C) received 100 mg/kgbw AlCl3 and 100 mg/kgbw SFN orally; and Group D) received 100 mg/kgbw SFN only orally. After 28 days of experiment, animals underwent cervical dislocation, blood serum was obtained for analysis, and testes were harvested for biochemical assays, histology, hormonal profile, and sperm characterization. Results The sperm parameters showed a significant difference within the AlCl3 only group compared with the control and SFN only groups (p = 0.02). However, AlCl3 and SFN co-treatment showed improvement in the motility, viability, and sperm count compared with the AlCl3 only group (p = 0.02). Furthermore, there was a significant decline in the levels of hormones profile and antioxidant status in AlCl3 only group compared to the control and SFN only (p = 0.02). The testicular histoarchitecture of the AlCl3 only group showed shrinkage of seminiferous tubules, spermatogenesis disruption, and empty lumen compared to the control and SFN only groups. Conclusion The present study revealed the ameliorative response of SFN on AlCl3-induced testicular toxicity on serum hormone profiles, antioxidant status, lipid peroxidation, and histomorphometric analysis through oxidative stress.
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Affiliation(s)
- Babatunde Ogunlade
- Department of Human Anatomy, Federal University of Technology, Akure, Ondo State, Nigeria
| | - Sunday Adelakun
- Department of Human Anatomy, Federal University of Technology, Akure, Ondo State, Nigeria
| | - Kingsley Iteire
- Department of Human Anatomy, University of Medical Sciences, Ondo city, Ondo State, Nigeria
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Sakaki JR, Melough MM, Provatas AA, Perkins C, Chun OK. Evaluation of estrogenic chemicals in capsule and French press coffee using ultra-performance liquid chromatography with tandem mass spectrometry. Toxicol Rep 2020; 7:1020-1024. [PMID: 32874926 PMCID: PMC7451997 DOI: 10.1016/j.toxrep.2020.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/11/2020] [Accepted: 08/17/2020] [Indexed: 12/26/2022] Open
Abstract
Liquid chromatography with tandem mass spectrometry detected estrogenic chemicals in coffee. The potential risk to health is likely to be low relative to established guidelines. Future studies should evaluate the health risk from chronic coffee consumption.
The objective of this study was to examine exposure to estrogenic chemicals (ECs) via capsule coffee. Twenty-two brands of capsule coffee and 15 brands of French press coffee for comparison were brewed, and their contents of ECs were identified and quantified using ultra-performance liquid chromatography with tandem mass spectrometry. Exposure to ECs in coffee were compared to tolerable daily intake guidelines to assess potential hazard to health. Benzophenone was the most frequently detected EC in capsule coffee (mean concentration ± SD: 20.37 ± 47.07 ng/mL, n = 6), followed by bisphenol A (BPA, 0.31 ± 0.71, n = 4), dibutyl phthalate (1.41 ± 3.58, n = 3), 4-nonylphenol (0.67 ± 1.82, n = 3) and bisphenol F (BPF, 0.49 ± 1.54, n = 2). BPA and BPF were each detected in 3 French press coffee samples (0.29 ± 0.58 and 0.85 ± 1.75 ng/mL, respectively). Two French press coffee brands purchased as ground coffee rather than whole bean were positive for ECs (BPA in one and BPF in both). Hazard indexes were below 1.0 for each EC for both coffee types. These results indicate that there is EC contamination in capsule and French press coffee, but the quantities of ECs are low relative to established safety guidelines.
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Key Words
- -, not detected
- 4-NP, 4-nonyphenol
- BP, benzophenone
- BPA, bisphenol A
- BPF, bisphenol F
- BPS, bisphenol S
- Bisphenol A
- Capsule
- Coffee
- DBP, dibutyl phthalate
- DEHP, di(2-ethylhexyl) phthalate
- DMTP, dimethyl terephthalate
- EC, estrogenic chemical
- EDI, estimated daily intake
- Estrogenic chemical
- HI, hazard index
- HPLC, high-performance liquid chromatography
- MDL, method detection limit
- MQL, method quantification limit
- Phthalate
- Plasticizer
- SD, standard deviation
- TDI, tolerable daily intake
- UPLC-MS/MS, ultra-performance liquid chromatography with tandem mass spectrometry
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Affiliation(s)
- Junichi R. Sakaki
- Department of Nutritional Sciences, University of Connecticut, 27 Manter Rd., Unit 4017, Storrs, CT 06269, USA
| | - Melissa M. Melough
- Department of Nutritional Sciences, University of Connecticut, 27 Manter Rd., Unit 4017, Storrs, CT 06269, USA
| | - Anthony A. Provatas
- Center for Environmental Sciences and Engineering, University of Connecticut, 3107 Horsebarn Hill Rd., Storrs, CT 06269, USA
| | - Christopher Perkins
- Center for Environmental Sciences and Engineering, University of Connecticut, 3107 Horsebarn Hill Rd., Storrs, CT 06269, USA
| | - Ock K. Chun
- Department of Nutritional Sciences, University of Connecticut, 27 Manter Rd., Unit 4017, Storrs, CT 06269, USA
- Corresponding author.
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Yawer A, Sychrová E, Labohá P, Raška J, Jambor T, Babica P, Sovadinová I. Endocrine-disrupting chemicals rapidly affect intercellular signaling in Leydig cells. Toxicol Appl Pharmacol 2020; 404:115177. [PMID: 32739526 DOI: 10.1016/j.taap.2020.115177] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/19/2020] [Accepted: 07/28/2020] [Indexed: 01/25/2023]
Abstract
A decline in male fertility possibly caused by environmental contaminants, namely endocrine-disrupting chemicals (EDCs), is a topic of public concern and scientific interest. This study addresses a specific role of testicular gap junctional intercellular communication (GJIC) between adjacent prepubertal Leydig cells in endocrine disruption and male reproductive toxicity. Organochlorine pesticides (lindane, methoxychlor, DDT), industrial chemicals (PCB153, bisphenol A, nonylphenol and octylphenol) as well as personal care product components (triclosan, triclocarban) rapidly dysregulated GJIC in murine Leydig TM3 cells. The selected GJIC-inhibiting EDCs (methoxychlor, triclosan, triclocarban, lindane, DDT) caused the immediate GJIC disruption by the relocation of gap junctional protein connexin 43 (Cx43) from the plasma membrane and the alternation of Cx43 phosphorylation pattern (Ser368, Ser279, Ser282) of its full-length and two N-truncated isoforms. After more prolonged exposure (24 h), EDCs decreased steady-state levels of full-length Cx43 protein and its two N-truncated isoforms, and eventually (triclosan, triclocarban) also tight junction protein Tjp-1. The disturbance of GJIC was accompanied by altered activity of mitogen-activated protein kinases MAPK-Erk1/2 and MAPK-p38, and a decrease in stimulated progesterone production. Our results indicate that EDCs might disrupt testicular homeostasis and development via disruption of testicular GJIC, a dysregulation of junctional and non-junctional functions of Cx43, activation of MAPKs, and disruption of an early stage of steroidogenesis in prepubertal Leydig cells. These critical disturbances of Leydig cell development and functions during a prepubertal period might be contributing to impaired male reproduction health later on.
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Affiliation(s)
- Affiefa Yawer
- RECETOX, Faculty of Science, Masaryk University, Kamenice 753/5, building A29, 625 00 Brno, Czech Republic
| | - Eliška Sychrová
- RECETOX, Faculty of Science, Masaryk University, Kamenice 753/5, building A29, 625 00 Brno, Czech Republic
| | - Petra Labohá
- RECETOX, Faculty of Science, Masaryk University, Kamenice 753/5, building A29, 625 00 Brno, Czech Republic
| | - Jan Raška
- RECETOX, Faculty of Science, Masaryk University, Kamenice 753/5, building A29, 625 00 Brno, Czech Republic
| | - Tomáš Jambor
- BioFood Centre, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovac Republic
| | - Pavel Babica
- RECETOX, Faculty of Science, Masaryk University, Kamenice 753/5, building A29, 625 00 Brno, Czech Republic
| | - Iva Sovadinová
- RECETOX, Faculty of Science, Masaryk University, Kamenice 753/5, building A29, 625 00 Brno, Czech Republic.
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Park YJ, Rahman MS, Pang WK, Ryu DY, Kim B, Pang MG. Bisphenol A affects the maturation and fertilization competence of spermatozoa. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 196:110512. [PMID: 32244115 DOI: 10.1016/j.ecoenv.2020.110512] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 06/11/2023]
Abstract
Although there are numerous studies on bisphenol A (BPA) on the testis and spermatozoa, the effect of BPA on the physiological link between the testis and maturation of spermatozoa has not been studied. To provide an optimal environment (acidic pH) for sperm maturation in the epididymis, clear cells secrete protons and principal cells reabsorb bicarbonate and the secreted proton. Because of its crucial role in sperm maturation and fertility, functional changes in the epididymis following BPA exposure must be considered to fully understand the mechanisms of BPA on male fertility. Here, we identified the adverse effects of BPA exposure during puberty in male mice. CD-1 male mice were gavaged daily with vehicle (corn oil) and 50 mg BPA/kg-BW for 6 weeks. We determined the changes in epididymis, functional sperm parameters including motility, capacitation status, tyrosine phosphorylation, and fertility-related protein expression and in vitro and in vivo fertility rate following BPA exposure. Expression of vacuolar-type H + -ATPase is necessary for the secretion of protons by clear cells of the caput epididymis and was directly down-regulated following BPA exposure, while there were no changes in the other epithelial cell types in the epididymis. Also, pERK 1/2 signaling pathway was increased significantly in the caput epididymis following BPA exposure. Consequently, the luminal pH slightly increased, resulting in premature capacitation of spermatozoa. Moreover, there was a significant loss of the acrosomal membrane following an increase of protein tyrosine phosphorylation, while PKA activity decreased during sperm capacitation. Fertility-related proteins also showed aberrant expression upon BPA exposure. These modifications resulted in decreased male fertility in vitro and in vivo.
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Affiliation(s)
- Yoo-Jin Park
- Department of Animal Science & Technology and BET Research Institute, Chgroung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Md Saidur Rahman
- Department of Animal Science & Technology and BET Research Institute, Chgroung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Won-Ki Pang
- Department of Animal Science & Technology and BET Research Institute, Chgroung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Do-Yeal Ryu
- Department of Animal Science & Technology and BET Research Institute, Chgroung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Bongki Kim
- Department of Animal Resources Science, Kongju National University, Yesan, Chungnam-do, 32439, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology and BET Research Institute, Chgroung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea.
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35
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Zhu Q, Li X, Ge RS. Toxicological Effects of Cadmium on Mammalian Testis. Front Genet 2020; 11:527. [PMID: 32528534 PMCID: PMC7265816 DOI: 10.3389/fgene.2020.00527] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/30/2020] [Indexed: 12/15/2022] Open
Abstract
Cadmium is a heavy metal, and people are exposed to it through contaminated foods and smoking. In humans and other mammals, cadmium causes damage to male testis. In this review, we summarize the effects of cadmium on the development and function of the testis. Cadmium causes severe structural damage to the seminiferous tubules, Sertoli cells, and blood-testis barrier, thus leading to the loss of sperm. Cadmium hinders Leydig cell development, inhibits Leydig cell function, and induces Leydig cell tumors. Cadmium also disrupts the vascular system of the testis. Cadmium is a reactive oxygen species inducer and possibly induces DNA damage, thus epigenetically regulating somatic cell and germ cell function, leading to male subfertility/infertility.
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Affiliation(s)
- Qiqi Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiaoheng Li
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ren-Shan Ge
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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36
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The study and manipulation of spermatogonial stem cells using animal models. Cell Tissue Res 2020; 380:393-414. [PMID: 32337615 DOI: 10.1007/s00441-020-03212-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 03/30/2020] [Indexed: 02/08/2023]
Abstract
Spermatogonial stem cells (SSCs) are a rare group of cells in the testis that undergo self-renewal and complex sequences of differentiation to initiate and sustain spermatogenesis, to ensure the continuity of sperm production throughout adulthood. The difficulty of unequivocal identification of SSCs and complexity of replicating their differentiation properties in vitro have prompted the introduction of novel in vivo models such as germ cell transplantation (GCT), testis tissue xenografting (TTX), and testis cell aggregate implantation (TCAI). Owing to these unique animal models, our ability to study and manipulate SSCs has dramatically increased, which complements the availability of other advanced assisted reproductive technologies and various genome editing tools. These animal models can advance our knowledge of SSCs, testis tissue morphogenesis and development, germ-somatic cell interactions, and mechanisms that control spermatogenesis. Equally important, these animal models can have a wide range of experimental and potential clinical applications in fertility preservation of prepubertal cancer patients, and genetic conservation of endangered species. Moreover, these models allow experimentations that are otherwise difficult or impossible to be performed directly in the target species. Examples include proof-of-principle manipulation of germ cells for correction of genetic disorders or investigation of potential toxicants or new drugs on human testis formation or function. The primary focus of this review is to highlight the importance, methodology, current and potential future applications, as well as limitations of using these novel animal models in the study and manipulation of male germline stem cells.
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37
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Ibtisham F, Honaramooz A. Spermatogonial Stem Cells for In Vitro Spermatogenesis and In Vivo Restoration of Fertility. Cells 2020; 9:E745. [PMID: 32197440 PMCID: PMC7140722 DOI: 10.3390/cells9030745] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 12/14/2022] Open
Abstract
Spermatogonial stem cells (SSCs) are the only adult stem cells capable of passing genes onto the next generation. SSCs also have the potential to provide important knowledge about stem cells in general and to offer critical in vitro and in vivo applications in assisted reproductive technologies. After century-long research, proof-of-principle culture systems have been introduced to support the in vitro differentiation of SSCs from rodent models into haploid male germ cells. Despite recent progress in organotypic testicular tissue culture and two-dimensional or three-dimensional cell culture systems, to achieve complete in vitro spermatogenesis (IVS) using non-rodent species remains challenging. Successful in vitro production of human haploid male germ cells will foster hopes of preserving the fertility potential of prepubertal cancer patients who frequently face infertility due to the gonadotoxic side-effects of cancer treatment. Moreover, the development of optimal systems for IVS would allow designing experiments that are otherwise difficult or impossible to be performed directly in vivo, such as genetic manipulation of germ cells or correction of genetic disorders. This review outlines the recent progress in the use of SSCs for IVS and potential in vivo applications for the restoration of fertility.
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Affiliation(s)
| | - Ali Honaramooz
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada;
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Poli D, Andreoli R, Moscato L, Pelà G, de Palma G, Cavallo D, Petyx M, Pelosi G, Corradi M, Goldoni M. The Relationship Between Widespread Pollution Exposure and Oxidized Products of Nucleic Acids in Seminal Plasma and Urine in Males Attending a Fertility Center. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17061880. [PMID: 32183208 PMCID: PMC7143937 DOI: 10.3390/ijerph17061880] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/04/2020] [Accepted: 03/05/2020] [Indexed: 12/17/2022]
Abstract
Background: In recent decades, there has been an increase in male infertility, and in many cases, the etiology remains unclear. Several studies relate male hypo-fertility to xenobiotic exposure, even if no data exist about multiple exposure at the environmental level. Methods: The study involved 86 males with diagnosis of idiopathic male infertility (IMI), and 46 controls with no alteration in sperm characteristics. Seminal plasma (SP) and urine samples were analyzed by liquid chromatography tandem mass spectrometry (LC-MS/MS) to quantify biomarkers of exposure (the main metabolites of benzene, toluene, 1,3-butadiene, 3-monochloropropanediol, styrene, and naphthol) and effect (oxidized products of nucleic acids).Results: Biomarker concentrations were similar in subjects with IMI and controls even if a stronger correlation between biomarkers of exposure and effects were observed in SP. Data show that, both in SP and urine, most metabolites were inter-correlated, indicating a simultaneous co-exposure to the selected substances at the environmental level. Principal component analysis showed in SP the clustering of mercapturic acids indicating a preferential metabolic pathway with Glutathione (GSH) depletion and, consequently, an increase of oxidative stress. This result was also confirmed by multivariable analysis through the development of explanatory models for oxidized products of nucleic acids. Conclusions: This study highlights how oxidative stress on the male reproductive tract can be associated with a different representation of metabolic pathways making the reproductive tract itself a target organ for different environmental pollutants. Our results demonstrate that SP is a suitable matrix to assess the exposure and evaluate the effects of reproductive toxicants in environmental/occupational medicine. The statistical approach proposed in this work represents a model appropriate to study the relationship between multiple exposure and effect, applicable even to a wider variety of chemicals.
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Affiliation(s)
- Diana Poli
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL Research, Via Fontana Candida1, 00078 Monte Porzio Catone, Rome, Italy; (D.P.); (D.C.); (M.P.)
| | - Roberta Andreoli
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
| | - Lucia Moscato
- Center of Reproductive Infertility (CIR), University Hospital of Parma, via A. Gramsci 14, 43126 Parma, Italy;
| | - Giovanna Pelà
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- University Hospital of Parma, via A. Gramsci 14, 43126 Parma, Italy
| | - Giuseppe de Palma
- Department of Medicine, Surgery, Radiological Sciences, Public Health and Human Sciences Unit, University of Brescia, 25121 Brescia, Italy;
| | - Delia Cavallo
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL Research, Via Fontana Candida1, 00078 Monte Porzio Catone, Rome, Italy; (D.P.); (D.C.); (M.P.)
| | - Marta Petyx
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL Research, Via Fontana Candida1, 00078 Monte Porzio Catone, Rome, Italy; (D.P.); (D.C.); (M.P.)
| | - Giorgio Pelosi
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 11/a, 43124 Parma, Italy;
| | - Massimo Corradi
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
- University Hospital of Parma, via A. Gramsci 14, 43126 Parma, Italy
| | - Matteo Goldoni
- Department of Medicine and Surgery, University of Parma, via A. Gramsci 14, 43126 Parma, Italy; (R.A.); (G.P.); (M.C.)
- Centre for Research in Toxicology (CERT), University of Parma, via A. Gramsci 14, 43126 Parma, Italy
- Correspondence:
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Green A, Barak S, Shine L, Kahane A, Dagan Y. Exposure by males to light emitted from media devices at night is linked with decline of sperm quality and correlated with sleep quality measures. Chronobiol Int 2020; 37:414-424. [PMID: 32126861 DOI: 10.1080/07420528.2020.1727918] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The last several decades have been characterized by the widespread usage of digital devices, especially smartphones. At the same time, there have been reports of both decline in sleep duration and quality and male fertility decline. The aim of this study was to assess the relationship between evening exposure to the light-emitting screens of digital media devices and measures of both sleep and sperm quality. Semen samples were obtained from 116 men undergoing fertility evaluation for the following sperm variables: volume (mL), pH, sperm concentration (million/mL), motility percentage (progressive% + non-progressive motility%), and total sperm count. Exposure to the screens of electronic devices and sleep habits was obtained by means of a questionnaire. Smartphone and tablet usage in the evening and after bedtime was negatively correlated with sperm motility (-0.392; -0.369; p < .05), sperm progressive motility (-0.322; -0.299; p < .05), and sperm concentration (-0.169; p < .05), and positively correlated with the percentage of immotile sperm (0.382; 0.344; p < .05). In addition, sleep duration was positively correlated with sperm total and progressive motility (0.249; 0.233; p < .05) and negatively correlated with semen pH (-0.349; p < .05). A significant negative correlation was observed between subjective sleepiness and total and progressive motility (-0.264; p < .05) as well as total motile sperm number (-0.173; p < .05). The results of this study support a link between evening and post-bedtime exposure to light-emitting digital media screens and sperm quality. Further research is required to establish the proposed causative link and may lead to the future development of relevant therapeutic and lifestyle interventions.
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Affiliation(s)
- Amit Green
- The Sleep and Fatigue Institute, Assuta Medical Center, Tel Aviv, Israel.,The Research Institute of Applied Chronobiology, The Academic College of Tel-Hai, Israel
| | - Shlomi Barak
- Reproductive Services, Assuta University Hospital, Ashdod, Israel.,Ben-Gurion University of the Negev, Be'er-Sheva, Israel
| | - Lior Shine
- The Andrology Laboratory, Assuta Medical Center, Rishon Le-Zion, Israel
| | - Arik Kahane
- The IFV Unit, Assuta Medical Center, Rishon Le-Zion, Israel
| | - Yaron Dagan
- The Sleep and Fatigue Institute, Assuta Medical Center, Tel Aviv, Israel.,The Research Institute of Applied Chronobiology, The Academic College of Tel-Hai, Israel.,The Human Biology Department, Haifa University, Haifa, Israel
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40
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Yilmaz B, Terekeci H, Sandal S, Kelestimur F. Endocrine disrupting chemicals: exposure, effects on human health, mechanism of action, models for testing and strategies for prevention. Rev Endocr Metab Disord 2020; 21:127-147. [PMID: 31792807 DOI: 10.1007/s11154-019-09521-z] [Citation(s) in RCA: 290] [Impact Index Per Article: 72.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Endocrine Disrupting Chemicals (EDCs) are a global problem for environmental and human health. They are defined as "an exogenous chemical, or mixture of chemicals, that can interfere with any aspect of hormone action". It is estimated that there are about 1000 chemicals with endocrine-acting properties. EDCs comprise pesticides, fungicides, industrial chemicals, plasticizers, nonylphenols, metals, pharmaceutical agents and phytoestrogens. Human exposure to EDCs mainly occurs by ingestion and to some extent by inhalation and dermal uptake. Most EDCs are lipophilic and bioaccumulate in the adipose tissue, thus they have a very long half-life in the body. It is difficult to assess the full impact of human exposure to EDCs because adverse effects develop latently and manifest at later ages, and in some people do not present. Timing of exposure is of importance. Developing fetus and neonates are the most vulnerable to endocrine disruption. EDCs may interfere with synthesis, action and metabolism of sex steroid hormones that in turn cause developmental and fertility problems, infertility and hormone-sensitive cancers in women and men. Some EDCs exert obesogenic effects that result in disturbance in energy homeostasis. Interference with hypothalamo-pituitary-thyroid and adrenal axes has also been reported. In this review, potential EDCs, their effects and mechanisms of action, epidemiological studies to analyze their effects on human health, bio-detection and chemical identification methods, difficulties in extrapolating experimental findings and studying endocrine disruptors in humans and recommendations for endocrinologists, individuals and policy makers will be discussed in view of the relevant literature.
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Affiliation(s)
- Bayram Yilmaz
- Department of Physiology, Faculty of Medicine, Yeditepe University, Istanbul, Turkey
| | - Hakan Terekeci
- Department of Internal Medicine, Faculty of Medicine, Yeditepe University, Istanbul, Turkey
| | - Suleyman Sandal
- Department of Physiology, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Fahrettin Kelestimur
- Department of Endocrinology, Faculty of Medicine, Yeditepe University, Istanbul, Turkey.
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Duan S, Zhang X, Jiang X, Xie Y, Zheng L, Zhang B, Xiao W, Xie X, Xie X, Li J, Ma S. RXFP2 as novel potential biomarker for abnormal differentiation induced by diethylstilbestrol in the gubernaculum of fetal mice. Am J Transl Res 2020; 12:3715-3727. [PMID: 32774729 PMCID: PMC7407749 DOI: pmid/32774729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 06/02/2020] [Indexed: 02/05/2023]
Abstract
Environmental estrogens (EEs) have been correlated with abnormalities in the male urogenital system. However, the mechanism underlying the effect of these molecules remains unclear. In vitro and in vivo experiments were performed to examine the expression level and mechanism of relaxin family peptide receptor 2 (RXFP2) in the gubernaculum of fetal mice following diethylstilbestrol (DES) treatment. The in vivo results demonstrate that DES treatment increased the stillbirth rate gradually, decreased the gubernacular cone volume significantly, and disrupted the tissue structure, leading to incomplete testicular descent. In vitro experiments reveal that DES administration resulted in abnormal cellular morphology and structural disorder of gubernacular cells, which lost their original morphology in a dose-dependent manner. Moreover, DES-induced F-actin rearrangement and stress fiber formation in cultured cells. Protein quantitative analysis showed that the RXFP2 level in each experimental group was significantly lower than that of the normal group. In conclusion, DES affects the morphology and alters the gubernaculum structure, as well as the expression of RXFP2 protein. These data demonstrate that DES is toxic to gubernaculum in fetal mice, and that RXFP2 is associated with the abnormal gubernaculum morphology induced by DES. Taken together, these data suggest that RXFP2 may be a novel potential biomarker for abnormal differentiation of the gubernaculum.
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Affiliation(s)
- Shouxing Duan
- Department of Pediatric Surgery, The First Affiliated Hospital of Shantou University Medical CollegeNo. 57 Changping Road, Shantou 515041, Guangdong, China
- Department of Pediatric Surgery, The Second Affiliated Hospital of Shantou University Medical CollegeNo. 69 Dongxiabei Road, Shantou 515041, Guangdong, China
| | - Xuan Zhang
- Department of Pediatric Surgery, Shenzhen Pingshan District Woman’s and Children’s Hospital, Southern Medical UniversityNo. 6 Longxingnan Road, Shenzhen 518122, Guangdong, China
| | - Xuewu Jiang
- Department of Pediatric Surgery, Shenzhen Pingshan District Woman’s and Children’s Hospital, Southern Medical UniversityNo. 6 Longxingnan Road, Shenzhen 518122, Guangdong, China
| | - Yao Xie
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical CollegeNo. 57 Changping Road, Shantou 515041, Guangdong, China
| | - Lian Zheng
- Department of Pediatric Surgery, The First Affiliated Hospital of Shantou University Medical CollegeNo. 57 Changping Road, Shantou 515041, Guangdong, China
| | - Bingna Zhang
- Center for Translational Medicine Research, The Second Affiliated Hospital of Shantou University Medical CollegeNo. 69 Dongxiabei Road, Shantou 515041, Guangdong, China
| | - Wenfeng Xiao
- Department of Pediatric Surgery, The Second Affiliated Hospital of Shantou University Medical CollegeNo. 69 Dongxiabei Road, Shantou 515041, Guangdong, China
| | - Xinquan Xie
- Department of Pediatric Surgery, The Second Affiliated Hospital of Shantou University Medical CollegeNo. 69 Dongxiabei Road, Shantou 515041, Guangdong, China
| | - Xiaojun Xie
- Department of General Surgery, The First Affiliated Hospital of Shantou University Medical CollegeNo. 57 Changping Road, Shantou 515041, Guangdong, China
| | - Jianhong Li
- Department of Pediatric Surgery, The Second Affiliated Hospital of Shantou University Medical CollegeNo. 69 Dongxiabei Road, Shantou 515041, Guangdong, China
| | - Shuhua Ma
- Department of Radiology, The First Affiliated Hospital of Shantou University Medical CollegeNo. 57 Changping Road, Shantou 515041, Guangdong, China
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42
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Meat intake in relation to semen quality and reproductive hormone levels among young men in Spain. Br J Nutr 2019; 121:451-460. [PMID: 30560757 DOI: 10.1017/s0007114518003458] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The aim of this study was to assess the associations of intake of different types of meat with semen parameters and reproductive hormones in healthy young men. This cross-sectional study included 206 men, 18-23 years, from Southern Spain. All men completed a validated FFQ, underwent a physical examination, and provided blood and semen samples. Multivariable linear regression was used to evaluate the associations between meat intake with semen quality parameters and reproductive hormones. Total meat intake was unrelated to semen quality or reproductive hormone levels. When subgroups of meat were separately considered, however, shellfish intake was positively related to progressive motility. The adjusted percentages of progressively motile spermatozoa for men in increasing quartiles of shellfish intake were 45·2, 42·0, 49·4 and 53·2 % with a significant linear trend across quartiles (P trend≤0·001). In contrast, men who consumed organ meats had significantly lower progressive sperm motility (51·5 v. 42·8 %; P = 0·001) and higher luteinising hormone levels (4·0 v. 4·6 IU/l; P = 0·03) compared with men who did not consume organ meats. Intake of shellfish and organ meats was low in this population, however. Given the scarcity of data on the relation between specific types of meat with semen quality and reproductive hormone levels, additional research is needed to confirm or refute these findings.
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43
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The current status and future of andrology: A consensus report from the Cairo workshop group. Andrology 2019; 8:27-52. [PMID: 31692249 DOI: 10.1111/andr.12720] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 10/24/2019] [Accepted: 10/24/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND In attempting to formulate potential WHO guidelines for the diagnosis of male infertility, the Evidence Synthesis Group noted a paucity of high-quality data on which to base key recommendations. As a result, a number of authors suggested that key areas of research/evidence gaps should be identified, so that appropriate funding and policy actions could be undertaken to help address key questions. OBJECTIVES The overall objective of this Consensus workshop was to clarify current knowledge and deficits in clinical laboratory andrology, so that clear paths for future development could be navigated. MATERIALS AND METHODS Following a detailed literature review, each author, prior to the face-to-face meeting, prepared a summary of their topic and submitted a PowerPoint presentation. The topics covered were (a) Diagnostic testing in male fertility and infertility, (b) Male fertility/infertility in the modern world, (c) Clinical management of male infertility, and (d) The overuse of ICSI. At the meeting in Cairo on February 18, 2019, the evidence was presented and discussed and a series of consensus points agreed. RESULTS The paper presents a background and summary of the evidence relating to these four topics and addresses key points of significance. Following discussion of the evidence, a total of 36 consensus points were agreed. DISCUSSION The Discussion section presents areas where there was further debate and key areas that were highlighted during the day. CONCLUSION The consensus points provide clear statements of evidence gaps and/or potential future research areas/topics. Appropriate funding streams addressing these can be prioritized and consequently, in the short and medium term, answers provided. By using this strategic approach, andrology can make the rapid progress necessary to address key scientific, clinical, and societal challenges that face our discipline now and in the near future.
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Rodprasert W, Main KM, Toppari J, Virtanen HE. Associations between male reproductive health and exposure to endocrine-disrupting chemicals. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.coemr.2019.05.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Marsh C, McCracken M, Gray M, Nangia A, Gay J, Roby KF. Low total motile sperm in transgender women seeking hormone therapy. J Assist Reprod Genet 2019; 36:1639-1648. [PMID: 31250175 DOI: 10.1007/s10815-019-01504-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 06/11/2019] [Indexed: 12/31/2022] Open
Abstract
PURPOSE This study was undertaken to compare semen quality, hormonal status, and social factors in transgender women seeking fertility preservation with those of fertile cisgender men. Long-range goals are to establish standard practice measures ensuring optimum semen quality for cryopreservation and fertility preservation in transgender women. METHODS This is a case-control study carried out at an academic medical center. Cases are transgender women seeking fertility preservation prior to initiation of hormone therapy. Controls are cisgender men recently fathering a child. All participants completed the Depression Anxiety Stress Scales 21 survey and additional survey questions related to personal behaviors. Complete semen analysis was carried out in a clinical andrology laboratory according to WHO guidelines, 5th edition. Serum follicle stimulating hormone, estradiol, and testosterone were measured at the time of semen analysis. RESULTS Sperm concentration, total sperm per ejaculate, total motile sperm, volume, and normal sperm morphology were significantly lower in transgender females compared with fertile cisgender men. Other measures of semen parameters and hormone concentrations were not different between groups. Survey results indicated transgender women were more likely to have symptoms of depression, anxiety, and stress and utilize tucking and tight undergarments, compared with controls; however, both groups reported similar numbers of ejaculations per week. CONCLUSIONS Although semen parameters were low, cryopreservation of sperm prior to hormone therapy is a viable fertility preservation option for most transgender women. The etiology of the differences in semen parameters is not known. Enhanced education related to personal behaviors or treatment to reduce effects of stressors prior to cryopreservation may improve future fertility potential.
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Affiliation(s)
- Courtney Marsh
- Department of Obstetrics & Gynecology, University of Kansas Medical Center, Kansas City, KS, 66160, USA.
- Center for Advanced Reproductive Medicine, University of Kansas Medical Center, Overland Park, KS, 66211, USA.
- Institute for Reproduction and Perinatal Health, University of Kansas Medical Center, Kansas City, KS, 66160, USA.
| | - Megan McCracken
- Department of Obstetrics & Gynecology, University of Kansas Medical Center, Kansas City, KS, 66160, USA
- Center for Advanced Reproductive Medicine, University of Kansas Medical Center, Overland Park, KS, 66211, USA
| | - Meredith Gray
- Department of Obstetrics & Gynecology, University of Kansas Medical Center, Kansas City, KS, 66160, USA
| | - Ajay Nangia
- Institute for Reproduction and Perinatal Health, University of Kansas Medical Center, Kansas City, KS, 66160, USA
- Department of Urology, University of Kansas Medical Center, Kansas City, KS, 66160, USA
| | - Judy Gay
- Department of Obstetrics & Gynecology, University of Kansas Medical Center, Kansas City, KS, 66160, USA
- Center for Advanced Reproductive Medicine, University of Kansas Medical Center, Overland Park, KS, 66211, USA
| | - Katherine F Roby
- Department of Obstetrics & Gynecology, University of Kansas Medical Center, Kansas City, KS, 66160, USA.
- Center for Advanced Reproductive Medicine, University of Kansas Medical Center, Overland Park, KS, 66211, USA.
- Institute for Reproduction and Perinatal Health, University of Kansas Medical Center, Kansas City, KS, 66160, USA.
- Department of Anatomy & Cell Biology, University of Kansas Medical Center, Kansas City, KS, 66160, USA.
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Al-Saleh I, Coskun S, Al-Doush I, Al-Rajudi T, Abduljabbar M, Al-Rouqi R, Palawan H, Al-Hassan S. The relationships between urinary phthalate metabolites, reproductive hormones and semen parameters in men attending in vitro fertilization clinic. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:982-995. [PMID: 30678022 DOI: 10.1016/j.scitotenv.2018.12.261] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/01/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
Evidence from previous studies has shown that phthalates may play a role in male reproductive function; however, results are still inconclusive, and the mechanism remains unclear. In this study, we first assessed whether exposure to phthalates is associated with altered reproductive hormones and semen parameters in 599 men attending an in vitro fertilization clinic. Secondly, we evaluated whether reproductive hormones could play a mediating role in the association between phthalates and sperm parameters. Eight phthalate metabolites were measured in two different spot urine samples: mono‑n‑butyl phthalate, mono-isobutyl phthalate (MiBP), monoethyl phthalate (MEP), monobenzyl phthalate, and four oxidative metabolites of di‑(2‑ethylhexyl) phthalate (DEHP) [i.e., mono‑(2‑ethylhexyl) phthalate (MEHP), mono‑(2‑ethyl‑5‑hydroxyhexyl) phthalate (MEHHP), mono‑(2‑ethyl‑5‑oxohexyl) phthalate (MEOHP), and mono‑(2‑ethyl‑5‑carboxypentyl) phthalate (MECPP)]. Semen parameters (concentration, volume, motility, and morphology) and reproductive hormones, i.e., follicle-stimulating hormone (FSH), luteinizing hormone (LH), thyroid-stimulating hormone, estradiol (E2), testosterone (TEST) and prolactin (PROL) were also determined and considered the main study outcomes. Separate multivariate linear regression was used to assess associations between levels of each urinary phthalate metabolite, molar sum of DEHP metabolites (∑DEHP), percentage of MEHP to ∑DEHP (%MEHP), and each outcome (natural log-transformed). Inverse associations were observed between TEST and MiBP (β = -0.099), FSH and MEHHP (β = -0.087), and PROL and MEOHP (β = -0.102), while a positive relationship was seen between E2 and MEP (β = 0.098). %MEHP was associated positively with FSH (β = 0.118) and LH (β = 0.099), but negatively with TEST/LH (β = -0.086) and TEST/E2 (β = -0.109). Sperm concentration was associated positively with MECPP (β = 0.131), MEHHP (β = 0.117), MEOHP (β = 0.107) and ∑DEHP (β = 0.111), but negatively with %MEHP (β = -0.135). All p-values were <0.05. Sobel's test indicated that FSH mediated significantly up to 60% of the positive relationship between sperm concentration and MEHHP, while FSH and LH mediated respectively 15 and 12% of the inverse association between sperm concentration and %MEHP. Further research on this topic is warranted.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia.
| | - Serdar Coskun
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Inaam Al-Doush
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Tahreer Al-Rajudi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Mai Abduljabbar
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Reem Al-Rouqi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Hemraz Palawan
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Saad Al-Hassan
- Reproductive Medicine Unit, Department of Obstetrics & Gynecology, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
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Fuchs F, Borrego P, Amouroux C, Antoine B, Ollivier M, Faure JM, Lopez C, Forgues D, Faure A, Merrot T, Boulot P, Jeandel C, Philibert P, Gaspari L, Sultan C, Paris F, Kalfa N. Prenatal imaging of genital defects: clinical spectrum and predictive factors for severe forms. BJU Int 2019; 124:876-882. [PMID: 30776193 DOI: 10.1111/bju.14714] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To report the clinical spectrum of genital defects diagnosed before birth, identify predictive factors for severe phenotypes at birth, and determine the rate of associated malformations. PATIENTS AND METHODS A retrospective study (2008-2017) of 4580 fetuses, identified prenatally with abnormalities evaluated by our Reference Center for Fetal Medicine, included cases with fetal sonographic findings of abnormal genitalia or uncertainty of fetal sex determination. Familial, prenatal and postnatal data were collected via a standardised questionnaire. RESULTS In all, 61 fetuses were included. The positive predictive value (PPV) of the prenatal diagnosis of genital defects was 90.1%. Most cases were 46,XY-undervirilized boys, 42 cases (68.8%), which included 29 with mid-penile or posterior hypospadias, nine with anterior hypospadias, and epispadias, micropenis, scrotal transposition, and buried penis (one each). In all, 46,XX-virilized girls were identified in seven cases (11.5%), which included four with congenital adrenal hyperplasia, two with isolated clitoromegaly, and one with ovotestis. Other defects included prune belly syndrome and persistent cloaca (six cases). Early detection during the second trimester (58.1% vs 18.8%, P = 0.03), intra-uterine growth restriction (IUGR) (45.2% vs 9.1%, P = 0.06), and curvature of the penis (38.7% vs 0%, P = 0.02), were more frequently related to severe defects in male newborns. Associated malformations (14 cases, 22.9%) and genetic defects (six) were frequent in undervirilized boys. CONCLUSION Prenatal imaging of genital defects leads to a wide range of phenotypes at birth. Its PPV is high and extra-urinary malformations are frequent. Early diagnosis during the second trimester, associated IUGR, and curvature of the genital tubercle, should raise suspicion of a severe phenotype and may justify delivery near a multidisciplinary disorders/differences of sex development team.
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Affiliation(s)
- Florent Fuchs
- Service de Gynécologie-Obstétrique, Hôpital Arnaud de Villeneuve - CHU Montpellier
| | - Paula Borrego
- Unité de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie - CHU Montpellier, Montpellier, France.,Université de Montpellier, Montpellier, France
| | - Cyril Amouroux
- Université de Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve - CHU Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Benoît Antoine
- Service de Gynécologie-Obstétrique, Hôpital Arnaud de Villeneuve - CHU Montpellier
| | - Margot Ollivier
- Unité de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie - CHU Montpellier, Montpellier, France.,Université de Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Jean-Michel Faure
- Service de Gynécologie-Obstétrique, Hôpital Arnaud de Villeneuve - CHU Montpellier
| | - Christophe Lopez
- Unité de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie - CHU Montpellier, Montpellier, France.,Université de Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Dominique Forgues
- Unité de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie - CHU Montpellier, Montpellier, France.,Université de Montpellier, Montpellier, France
| | - Alice Faure
- Service de Chirurgie Pédiatrique, Hôpital La Timone, APHM, Marseille, France
| | - Thierry Merrot
- Service de Chirurgie Pédiatrique, Hôpital La Timone, APHM, Marseille, France
| | - Pierre Boulot
- Service de Gynécologie-Obstétrique, Hôpital Arnaud de Villeneuve - CHU Montpellier
| | - Claire Jeandel
- Université de Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve - CHU Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Pascal Philibert
- Université de Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve - CHU Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Laura Gaspari
- Université de Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve - CHU Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Charles Sultan
- Université de Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve - CHU Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Françoise Paris
- Université de Montpellier, Montpellier, France.,Unité d'Endocrinologie-Gynécologie Pédiatrique, Département de Pédiatrie, Hôpital Arnaud de Villeneuve - CHU Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
| | - Nicolas Kalfa
- Unité de Chirurgie Viscérale et Urologique Pédiatrique, Hôpital Lapeyronie - CHU Montpellier, Montpellier, France.,Université de Montpellier, Montpellier, France.,National Reference Network DSD DevGen, Centre Constitutif Sud. - CHU Montpellier, Montpellier, France
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Jubaidi FF, Mathialagan RD, Noor MM, Taib IS, Budin SB. Monosodium glutamate daily oral supplementation: study of its effects on male reproductive system on rat model. Syst Biol Reprod Med 2019; 65:194-204. [PMID: 30773941 DOI: 10.1080/19396368.2019.1573274] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Monosodium glutamate (MSG) is widely used in food preparation industry and has been consumed regularly. Previous studies had reported on effects of MSG when given at extremely high dosages, the results are not applicable to human equivalent intake. Therefore, the present study aimed to evaluate the effect of MSG on sperm quality and changes in reproductive organs of adult male rats when taken at average human daily intake (ADI). Twenty-four adult male rats were randomly assigned into three groups; NC (Normal control), MSG60 and MSG120 where MSG was given orally at 60 mg/kg and 120 mg/kg to each respective group. All treatments were conducted for 28 consecutive days. MSG at estimated ADI of 120 mg/kg body weight resulted in a significant drop in sperm quality (p < 0.05) when compared to both control and MSG60 groups. A significant decrease in the weight of reproductive organs was also apparent (p < 0.05). Moreover, oxidative status evaluation showed that treatment of MSG induces oxidative stress in the testis, more severely at a dose of 120 mg/kg body weight. These findings are supported by alterations in the observed histology of reproductive organs. This study shows that an intake dose of 120 mg/kg body weight MSG could cause significant damage to the reproductive system. Abbreviations: MSG: Monosodium glutamate; ADI: average daily intake; PUFA: polyunsaturated fatty acid; FSH: follicle stimulating hormone; LH: luteinizing hormone; TCA: tricarbocylic acid; PF: prostatic fluid.
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Affiliation(s)
- Fatin Farhana Jubaidi
- a Biomedical Science Programme, Centre of Health and Applied Sciences, Faculty of Health Sciences , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
| | - Ramya Dewi Mathialagan
- a Biomedical Science Programme, Centre of Health and Applied Sciences, Faculty of Health Sciences , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
| | - Mahanem Mat Noor
- b School of Biosciences and Biotechnology, Faculty of Science and Technology , Universiti Kebangsaan Malaysia , Bangi , Malaysia
| | - Izatus Shima Taib
- a Biomedical Science Programme, Centre of Health and Applied Sciences, Faculty of Health Sciences , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
| | - Siti Balkis Budin
- a Biomedical Science Programme, Centre of Health and Applied Sciences, Faculty of Health Sciences , Universiti Kebangsaan Malaysia , Kuala Lumpur , Malaysia
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49
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Di Nisio A, Foresta C. Water and soil pollution as determinant of water and food quality/contamination and its impact on male fertility. Reprod Biol Endocrinol 2019; 17:4. [PMID: 30611299 PMCID: PMC6321708 DOI: 10.1186/s12958-018-0449-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 12/17/2018] [Indexed: 12/11/2022] Open
Abstract
Over the past two decades, public health has focused on the identification of environmental chemical factors that are able to adversely affect hormonal function, known as endocrine disruptors (EDs). EDs mimic naturally occurring hormones like estrogens and androgens which can in turn interfere with the endocrine system. As a consequence, EDs affect human reproduction as well as post and pre-natal development. In fact, infants can be affected already at prenatal level due to maternal exposure to EDs. In particular, great attention has been given to those chemicals, or their metabolites, that have estrogenic properties or antagonistic effects on the activity of androgen or even inhibiting their production. These compounds have therefore the potential of interfering with important physiological processes, such as masculinization, morphological development of the urogenital system and secondary sexual traits. Animal and in vitro studies have supported the conclusion that endocrine-disrupting chemicals affect the hormone-dependent pathways responsible for male gonadal development, either through direct interaction with hormone receptors or via epigenetic and cell-cycle regulatory modes of action. In human populations, epidemiological studies have reported an overall decline of male fertility and an increased incidence of diseases or congenital malformations of the male reproductive system. The majority of studies point towards an association between exposure to EDs and male and/or female reproductive system disorders, such as infertility, endometriosis, breast cancer, testicular cancer, poor sperm quality and/or function. Despite promising discoveries, a causal relationship between the reproductive disorders and exposure to specific toxicants has yet to be established, due to the complexity of the clinical protocols used, the degree of occupational or environmental exposure, the determination of the variables measured and the sample size of the subjects examined. Despite the lack of consistency in the results of so many studies investigating endocrine-disrupting properties of many different classes of chemicals, the overall conclusion points toward a positive association between exposure to EDs and reproductive system. Future studies should focus on a uniform systems to examine human populations with regard to the exposure to specific EDs and the direct effect on the reproductive system.
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Affiliation(s)
- Andrea Di Nisio
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy
| | - Carlo Foresta
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Via Giustiniani, 2, 35128, Padova, Italy.
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de Neergaard R, Nielsen JE, Jørgensen A, Toft BG, Goetze JP, Jørgensen N. Positive association between cholesterol in human seminal plasma and sperm counts: results from a cross-sectional cohort study and immunohistochemical investigations. Andrology 2018; 6:817-828. [DOI: 10.1111/andr.12532] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 07/12/2018] [Accepted: 07/12/2018] [Indexed: 11/27/2022]
Affiliation(s)
- R. de Neergaard
- University Department of Growth and Reproduction; Rigshospitalet; Copenhagen Denmark
| | - J. E. Nielsen
- University Department of Growth and Reproduction; Rigshospitalet; Copenhagen Denmark
| | - A. Jørgensen
- University Department of Growth and Reproduction; Rigshospitalet; Copenhagen Denmark
| | - B. G. Toft
- Department of Pathology; Rigshospitalet; Copenhagen Denmark
| | - J. P. Goetze
- Department of Clinical Biochemistry; Rigshospitalet; Copenhagen Denmark
| | - N. Jørgensen
- University Department of Growth and Reproduction; Rigshospitalet; Copenhagen Denmark
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