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Yu Y, Zhu R, Qi M, Liu J, Cao K, Zhang D, Yang B, Niu R, Wang J, Zhao Y, Sun Z. MiRNA-seq and mRNA-seq revealed the mechanism of fluoride-induced cauda epididymal injury. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172895. [PMID: 38697545 DOI: 10.1016/j.scitotenv.2024.172895] [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: 01/14/2024] [Revised: 03/26/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
The widespread presence of fluoride in water, food, and the environment continues to exacerbate the impact of fluoride on the male reproductive health. However, as a critical component of the male reproductive system, the intrinsic mechanism of fluoride-induced cauda epididymis damage and the role of miRNAs in this process are still unclear. This study established a mouse fluorosis model and employed miRNA and mRNA sequencing; Evans blue staining, Oil Red O staining, TEM, immunofluorescence, western blotting, and other technologies to investigate the mechanism of miRNA in fluoride-induced cauda epididymal damage. The results showed that fluoride exposure increased the fluoride concentration in the hard tissue and cauda epididymis, altered the morphology and ultrastructure of the cauda epididymis, and reduced the motility rate, normal morphology rate, and hypo-osmotic swelling index of the sperm in the cauda epididymis. Furthermore, sequencing results revealed that fluoride exposure resulted in differential expression of 17 miRNAs and 4725 mRNAs, which were primarily enriched in the biological processes of tight junctions, inflammatory response, and lipid metabolism, with miR-742-3p, miR-141-5p, miR-878-3p, and miR-143-5p serving as key regulators. Further verification found that fluoride damaged tight junctions, raised oxidative stress, induced an inflammatory response, increased lipid synthesis, and reduced lipid decomposition and transport in the cauda epididymis. This study provided a theoretical basis for developing miRNA as potential diagnostic markers and therapeutic target drugs for this injury.
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Affiliation(s)
- Yanghuan Yu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Run Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Mengjie Qi
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Jie Liu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Kewei Cao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Ding Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Bo Yang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Ruiyan Niu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Jundong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China
| | - Yangfei Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China.
| | - Zilong Sun
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, Shanxi, China.
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Zhao H, Yu Y, Mei C, Zhang T, Kang Y, Li N, Huang D. Effect of C-Type Natriuretic Peptide (CNP) on Spermatozoa Maturation in Adult Rat Epididymis. Curr Issues Mol Biol 2023; 45:1681-1692. [PMID: 36826053 PMCID: PMC9955803 DOI: 10.3390/cimb45020108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/30/2023] [Accepted: 02/03/2023] [Indexed: 02/18/2023] Open
Abstract
C-type natriuretic peptide (CNP) is highly expressed in male reproductive tissues, such as the epididymis. The aim of this study is to explore the role of CNP in the maturation of rat epididymal spermatozoa. First, the expression levels of CNP and its specific natriuretic peptide receptor-B (NPR-B) were detected in various tissues of rats and epididymis at different stages after birth. Then a castrated rat model was established to analyze the relationship between testosterone and CNP/NPR-B expression in the epididymis. Finally, CNP and different inhibitors (NPR-B inhibitors, cGMP inhibitors) were used to incubate epididymal sperm in vitro to examine sperm mobility and expression of sperm maturation-related factors. The results showed CNP/NPR-B mRNAs were expressed in all tissues of rats, but were extremely highly expressed in male genital ducts (seminal vesicle, prostate and epididymis). The expression of CNP/NPR-B in epididymis was the highest at birth and the fifth week after birth. In the epididymis, CNP/NPR-B were highly expressed in the caput and located in the epididymal epithelial cells. After castration, the expression of CNP/NPR-B decreased sharply and was restored quickly after testosterone supplementation. In vitro, CNP could significantly promote the acquisition of epididymal sperm motility through the NPR-B/cGMP pathway and induce the expression of sperm maturation-related factors (such as Bin1b, Catsper 1, Dnah17, Fertilin). This study shows that CNP plays a role in epididymal sperm maturation. The mechanism of CNP is to promote the acquisition of epididymal sperm fluidity through the NPR-B/cGMP signaling pathway and also to regulate sperm maturation-related genes. Moreover, the expression of CNP/NPR-B was regulated by testosterone.
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Affiliation(s)
- Hu Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (H.Z.); (Y.Y.); (C.M.); (T.Z.); (Y.K.); (N.L.)
- Department of Human Anatomy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuejin Yu
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (H.Z.); (Y.Y.); (C.M.); (T.Z.); (Y.K.); (N.L.)
| | - Chunlei Mei
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (H.Z.); (Y.Y.); (C.M.); (T.Z.); (Y.K.); (N.L.)
| | - Tianyu Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (H.Z.); (Y.Y.); (C.M.); (T.Z.); (Y.K.); (N.L.)
| | - Yafei Kang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (H.Z.); (Y.Y.); (C.M.); (T.Z.); (Y.K.); (N.L.)
| | - Na Li
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (H.Z.); (Y.Y.); (C.M.); (T.Z.); (Y.K.); (N.L.)
| | - Donghui Huang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; (H.Z.); (Y.Y.); (C.M.); (T.Z.); (Y.K.); (N.L.)
- Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518063, China
- Correspondence: ; Tel.: +86-188-7226-2607
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Zhao H, Zhu Y, Zhao Y, Wang T, Li H, Yang J, Cheng X, Wang J, Wang J. Alleviating effects of selenium on fluoride-induced testosterone synthesis disorder and reproduction toxicity in rats. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114249. [PMID: 36323150 DOI: 10.1016/j.ecoenv.2022.114249] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/02/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Fluoride (F) exists widely in food, water and other natural resources, and can cause damage to the reproductive system of human and animals. Studies have shown that selenium (Se) is a necessary trace element to maintain the normal male reproductive system. However, it is not clear whether it can alleviate the damage of reproductive system induced by F. Hence, sodium fluoride (NaF) was administered singly in drinking water at 100 mg L-1 alone and co-administered by drinking with sodium selenite (Na2SeO3) at 0.5, 1.0, 2.0 mg L-1 for 10 consecutive weeks. The results demonstrated that the sperm deformity rate were increased significantly by F, however, it was improved significantly after the addition of 2.0 mg L-1 Na2SeO3. The contents of glutathione peroxidase 4 (GPX-4), selenoprotein P (SePP), pregnenolone (PREG), androstenedione (ASD), and testosterone (T) were reduced obviously in the F group, however, it was increased significantly after adding 0.5, 1.0 and 2.0 mg L-1 Na2SeO3. F decreased noticeably the mRNA and protein expression levels of steroidogenic acute regulatory protein (StAR), cytochrome P450 cholesterol side chain lyase (P450scc), 3β-hydroxysteroid dehydrogenase (3β-HSD), cytochrome P450 17α-hydroxylase (P450c17) and 17β-hydroxysteroid dehydrogenase (17β-HSD), which was increased obviously after the addition of 1.0 and 2.0 mg L-1 Na2SeO3. In summary, 2.0 mg L-1 Na2SeO3 can alleviate testosterone synthesis disorder induced by F via reducing oxidative stress, increasing the level of selenoprotein in testis and regulating the content of related hormones and enzyme activity during testosterone synthesis pathway.
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Affiliation(s)
- Hui Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Yaya Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Yangfei Zhao
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Tianyu Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Haojie Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Jiarong Yang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Xiaofang Cheng
- Department of Basic Science, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Jundong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China
| | - Jinming Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China; Shanxi Key Laboratory of Environmental Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, Shanxi, PR China.
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Cyr DG, Pinel L. Emerging organoid models to study the epididymis in male reproductive toxicology. Reprod Toxicol 2022; 112:88-99. [PMID: 35810924 DOI: 10.1016/j.reprotox.2022.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/13/2022] [Accepted: 07/05/2022] [Indexed: 10/17/2022]
Abstract
The importance of the epididymis on sperm maturation and consequently male fertility has been well documented. The pseudostratified epithelium of the epididymis is comprised of multiple cell types, including principal cells, which are the most abundant, and basal cells. The role of basal cells has been unclear and has been a source of discussion in the literature. However, the recent demonstration that these cells are multipotent or adult stem cells has opened new areas of research in epididymal biology. One such avenue is to understand the regulation of these stem cells, and to exploit their properties to develop tools for toxicological studies to elucidate the effects of chemicals on cell differentiation and epididymal function in vitro. Studies in both rat and mouse have shown that purified single epididymal basal cells cultured under 3D conditions can proliferate and differentiate to form organoids, or mini organs. Furthermore, these epididymal basal stem cells can self-renew and differentiate into other epididymal cell types. It is known that during epididymal development, basal cells are derived from undifferentiated columnar cells, which have been reported to share common properties to stem cells. Like basal cells, these undifferentiated columnar cells can also form organoids under 3D culture conditions and can differentiate into basal, principal and clear cells. Organoids derived from either basal cells or columnar cells offer unique models for toxicology studies and represent an exciting and emerging approach to understand the epididymis.
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Affiliation(s)
- Daniel G Cyr
- Laboratory for Reproductive Toxicology, INRS-Centre Armand-Frappier Santé Biotechnologie, Université du Québec, Laval, QC, Canada; Department of Anatomy and Cell Biology, McGill University, Montreal, QC, Canada; Department of Obstetrics, Gynecology, and Reproduction, Laval University, Québec, QC, Canada.
| | - Laurie Pinel
- Laboratory for Reproductive Toxicology, INRS-Centre Armand-Frappier Santé Biotechnologie, Université du Québec, Laval, QC, Canada
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