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Zhang W, Tian Z, Qi X, Chen P, Yang Q, Guan Q, Ye J, Yu C. Switching from high-fat diet to normal diet ameliorate BTB integrity and improve fertility potential in obese male mice. Sci Rep 2023; 13:14152. [PMID: 37644200 PMCID: PMC10465505 DOI: 10.1038/s41598-023-41291-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 08/24/2023] [Indexed: 08/31/2023] Open
Abstract
Obesity is a prominent risk factor for male infertility, and a high-fat diet is an important cause of obesity. Therefore, diet control can reduce body weight and regulate blood glucose and lipids, but it remains unclear whether it can improve male fertility and its mechanism. This study explores the effects of switching from a high-fat diet (HFD) to a normal diet (ND) on the fertility potential of obese male mice and its related mechanisms. In our study, male mice were separated into three groups: normal diet group (NN), continuous high-fat diet group (HH), and return to normal diet group (HN). The reproductive potential of mice was tested through cohabitation. Enzymatic methods and ELISA assays were used to measure metabolic indicators, follicle-stimulating hormone (FSH) levels and intratesticular testosterone levels. Transmission electron microscopy and immunofluorescence with biotin tracers assessed the integrity of the blood-testis barrier (BTB). Malondialdehyde (MDA), superoxide dismutase (SOD), and reactive oxygen species (ROS) were inspected for the assessment of oxidative stress. The expression and localization of BTB-related proteins were detected through the immunoblot and immunofluorescence. The mice in the high-fat diet group indicated increased body weight and epididymal fat weight, elevated serum TC, HDL, LDL, and glucose, decreased serum FSH, and dramatic lipid deposition in the testicular interstitium. Analysis of fertility potential revealed that the fertility rate of female mice and the number of pups per litter in the HH group were significantly reduced. After the fat intake was controlled by switching to a normal diet, body weight and epididymal fat weight were significantly reduced, serum glucose and lipid levels were lowered, serum FSH level was elevated and the deposition of interstitial lipids in the testicles was also decreased. Most significantly, the number of offspring of male mice returning to a normal diet was significantly increased. Following further mechanistic analysis, the mice in the sustained high-fat diet group had disrupted testicular BTB integrity, elevated levels of oxidative stress, and abnormal expression of BTB-related proteins, whereas the restoration of the normal diet significantly ameliorated the above indicators in the mice. Our study confirms diet control by switching from a high-fat diet to a normal diet can effectively reduce body weight, ameliorate testicular lipotoxicity and BTB integrity in male mice, and improve fertility potential, providing an effective treatment option for obese male infertility.
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Affiliation(s)
- Wenjing Zhang
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Zhenhua Tian
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Xiangyu Qi
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Pengcheng Chen
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Qian Yang
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Qingbo Guan
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Jifeng Ye
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China.
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China.
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China.
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Department of Endocrinology and Metabolism, The Second People's Hospital of Liaocheng, Shandong, 252601, China.
| | - Chunxiao Yu
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China.
- Key Laboratory of Endocrine Glucose and Lipids Metabolism and Brain Aging (Shandong First Medical University), Ministry of Education, Shandong, China.
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China.
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Engineering Laboratory of Prevention and Control for Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
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Antonine B, Guillaume M, Philippe D, Marie-Hélène P. A comparative study of the effects of 3 testicular toxicants in cultures of seminiferous tubules of rats or of domestic cats (veterinary waste): An alternative method for reprotoxicology. Toxicol In Vitro 2022; 83:105397. [DOI: 10.1016/j.tiv.2022.105397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/18/2022] [Accepted: 05/22/2022] [Indexed: 11/25/2022]
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3
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Antonine B, Guillaume M, Philippe D, Marie-Hélène P. Low concentrations of glyphosate alone affect the pubertal male rat meiotic step: An in vitro study. Toxicol In Vitro 2022; 79:105291. [PMID: 34864054 DOI: 10.1016/j.tiv.2021.105291] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 11/09/2021] [Accepted: 11/29/2021] [Indexed: 12/20/2022]
Abstract
Glyphosate is the most used herbicide in the world. Controversial studies exist on its effect on the male reproductive system. We used the validated BioAlter® model to test the effects of low concentrations of Glyphosate. Pubertal rat seminiferous tubules were treated with Glyphosate 50 nM, 500 nM, 5 μM or 50 μM over a 3-week culture period. The Trans-Epithelial Electrical Resistance was not modified by any of the concentrations. The decrease of Clusterin mRNAs suggested that glyphosate would target the integrity of Sertoli cells. The decrease of the numbers of germ cells from day 14 onward highlighted the chronic effect of glyphosate at 50 nM, 500 nM or 5 μM. No consistent effect of glyphosate was observed on the numbers of spermatogonia or on their specific mRNA levels. However, those low concentrations of glyphosate targeted young spermatocytes and middle to late pachytene spermatocytes resulting in a decrease of the numbers of round spermatids, the direct precursors of spermatozoa. This study underlines that the effect of a toxicant should be also studied at low doses and during the establishment of the blood-testis barrier.
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Affiliation(s)
- Blondet Antonine
- Kallistem, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Etoile, France.
| | - Martin Guillaume
- Kallistem, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Etoile, France.
| | - Durand Philippe
- Kallistem, VetAgro Sup, 1 Avenue Bourgelat, 69280 Marcy-l'Etoile, France.
| | - Perrard Marie-Hélène
- INSERM U 1208, Institut Cellule Souche et Cerveau, 18 avenue du Doyen Lépine, 69500 Bron, France.
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Rodríguez-Díaz R, Alcaide-Ruggiero L, Rodríguez-Fiestas S, Hess-Medler S, González-Pérez J, Gutiérrez ÁJ, Hardisson A, Rubio C, Paz S, González-Weller D, Blanes-Zamora R. Associations of Semen Quality with Seminal Non-essential Heavy Metals in Males from the Canary Islands. Biol Trace Elem Res 2021; 199:4525-4534. [PMID: 33565020 DOI: 10.1007/s12011-021-02605-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/02/2020] [Indexed: 02/04/2023]
Abstract
Semen quality and levels of non-essential metals such as strontium (Sr), aluminum (Al), lead (Pb), nickel (Ni), and vanadium (V) were measured. Metals were determined by ICP-OES (inductively coupled plasma - optical emission spectrometry) in semen samples from 102 men who were recruited in a Reproduction Unit in the Canary Islands. The presence of each metal was as follows: Sr: 56.9%, Al: 73.5%, Pb: 45.1%, Ni: 15.7%, and V: 79.4% of the samples. No significant differences were found in the relationship between the spermiogram, the sperm motility, and the concentration of spermatozoa levels of non-essential metals. It is noteworthy that Ni levels tend to be lower in patients with oligozoospermia (t (46.4) = 1.84; p = 0.070). Between lifestyle and non-essential metals, there was a significant relationship between the level of occupational exposure to metals and Ni (χ2(2) = 13.91; p = 0.001). We did not find significant differences in non-essential seminal metal content and smoking status but, there were differences between drinkers and the concentration of V in semen (t (100) = -1.99; p = 0.050). The occupational exposure to metals and place of residence have effects on Al and V levels in semen. Regarding obesity, significant differences were found in Pb levels (t (18.0) = 2.34; p = 0.031). Obese patients have a lower Pb level, and the percentage of progressive sperm motility was lower in obese men (t (98) = 2.14; p = 0.035). The detection of metals in semen opens a new field in the study of male infertility with the possibility of performing treatments aimed at correcting these possible anomalies.
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Affiliation(s)
- Rubí Rodríguez-Díaz
- Human Reproduction Unit, Obstetrics and Gynecology, Hospital Universitario de Canarias, Universidad de La Laguna, La Laguna, Tenerife, Spain.
| | - Lourdes Alcaide-Ruggiero
- Human Reproduction Unit, Obstetrics and Gynecology, Hospital Universitario de Canarias, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - Sonsoles Rodríguez-Fiestas
- Human Reproduction Unit, Obstetrics and Gynecology, Hospital Universitario de Canarias, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - Stephany Hess-Medler
- Department of Clinical Psychology, Psychobiology and Methodology, Universidad de La Laguna, Tenerife, Spain
| | - Jonay González-Pérez
- Human Reproduction Unit, Obstetrics and Gynecology, Hospital Universitario de Canarias, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | | | | | - Carmen Rubio
- Toxicology, Universidad de La Laguna, Tenerife, Spain
| | - Soraya Paz
- Toxicology, Universidad de La Laguna, Tenerife, Spain
| | | | - Raquel Blanes-Zamora
- Human Reproduction Unit, Obstetrics and Gynecology, Hospital Universitario de Canarias, Universidad de La Laguna, La Laguna, Tenerife, Spain
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5
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Hardneck F, de Villiers C, Maree L. Effect of Copper Sulphate and Cadmium Chloride on Non-Human Primate Sperm Function In Vitro. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:6200. [PMID: 34201151 PMCID: PMC8228149 DOI: 10.3390/ijerph18126200] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/18/2021] [Accepted: 05/21/2021] [Indexed: 01/04/2023]
Abstract
In order to address the large percentage of unexplained male infertility in humans, more detailed investigations using sperm functional tests are needed to identify possible causes for compromised fertility. Since many environmental and lifestyle factors might be contributing to infertility, future studies aiming to elucidate the effect of such factors on male fertility will need the use of appropriate research models. The current study aimed to assess the effects of two heavy metals, namely copper sulphate, and cadmium chloride, on non-human primate (NHP) sperm function in order to establish the possibility of using these primate species as models for reproductive studies. Our combined results indicated that the functionality of NHP spermatozoa is inhibited by the two heavy metals investigated. After in vitro exposure, detrimental effects, and significant lowered values (p < 0.05) were obtained for sperm motility, viability and vitality, acrosome intactness, and hyperactivation. These metals, at the tested higher concentrations, therefore, have the ability to impair sperm quality thereby affecting sperm fertilizing capability in both humans and NHPs.
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Affiliation(s)
- Farren Hardneck
- Department of Medical Bioscience, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa;
| | - Charon de Villiers
- PUDAC-Delft Animal Facility, South African Medical Research Council, Cape Town 7505, South Africa;
| | - Liana Maree
- Department of Medical Bioscience, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa;
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6
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Shobana N, Kumar MK, Navin AK, Akbarsha MA, Aruldhas MM. Prenatal exposure to excess chromium attenuates transcription factors regulating expression of androgen and follicle stimulating hormone receptors in Sertoli cells of prepuberal rats. Chem Biol Interact 2020; 328:109188. [PMID: 32679048 DOI: 10.1016/j.cbi.2020.109188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 06/06/2020] [Accepted: 06/25/2020] [Indexed: 01/06/2023]
Abstract
We have reported that gestational exposure to hexavalent chromium (CrVI) represses androgen receptor (Ar) and follicle stimulating hormone receptor (Fshr) in Sertoli cells (SCs) of adult rats, while the mechanism underlying remains obscure. We tested the hypothesis "transient gestational exposure to CrVI during the critical embryonic windows of testicular differentiation and growth may have adverse impact on transcription factors controlling the expression of Ar and Fshr in SCs of the F1 progeny". CrVI (K2Cr2O7) was given through drinking water (50 ppm, 100 ppm and 200 ppm), to pregnant rats from gestational day 9-14 (testicular differentiation) and 15 to 21 (prenatal differentiation and proliferation of SC); male progenies were sacrificed on postnatal day 30 (Completion of postnatal SC maturation). A significant increase in free radicals and decrease in enzymatic and non-enzymatic antioxidants were observed in SCs of experimental rats. Real time PCR and western blot data showed decreased expression of Ar, Fshr, Inhibin B, Transferrin, Androgen binding protein, Claudin 11 and Occludin in SCs of experimental rats; concentrations of lactate, pyruvate and retinoic acid also decreased. Serum FSH, luteinizing hormone and estradiol increased, whereas testosterone and prolactin decreased in experimental rats. Western blot detection revealed decreased levels of transcription factors regulating Fshr viz., USF-1, USF-2, SF-1, c-fos, c-jun and GATA 1, and those of Ar viz., Sp-1, ARA54, SRC-1 and CBP in experimental rats, whereas the levels of cyclinD1 and p53, repressors of Ar increased. ChIP assay detected decreased USF-1 and USF-2 binding to Fshr promoter, and binding of Sp-1 to Ar promoter. We conclude that gestational exposure to CrVI affects SC structure and function in F1 progeny by inducing oxidative stress and diminishing the expression of Ar and Fshr through attenuation of their specific transcriptional regulators and their interaction with the respective promoter.
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Affiliation(s)
- Navaneethabalakrishnan Shobana
- Department of Endocrinology, Dr.A.L.M Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, 600113, India
| | - Mani Kathiresh Kumar
- Department of Endocrinology, Dr.A.L.M Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, 600113, India
| | - Ajit Kumar Navin
- Department of Endocrinology, Dr.A.L.M Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, 600113, India
| | | | - Mariajoseph Michael Aruldhas
- Department of Endocrinology, Dr.A.L.M Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai, 600113, India.
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7
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Pokhrel G, Shi Y, Wang W, Khatiwada SU, Sun Z, Yan J, Liu J, Zheng D. Correlation between urinary chromium level and semen quality in men attending an andrology laboratory. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:23301-23308. [PMID: 32335839 DOI: 10.1007/s11356-020-08890-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
Chromium is an essential element that is required for the normal physiology but can be toxic to humans above a certain level. In spite of growing interest in research on chromium exposure to human health consensus about its effect on human, semen quality has not been achieved. The aim of the present study is to evaluate the impact of chromium exposure on semen parameters. A total of 760 males attending andrology laboratory of Tongji Hospital, Wuhan, for routine semen analysis were enrolled and requested to provide semen and urine samples. The urine level of chromium was evaluated using inductively coupled plasma mass spectrometry (ICP-MS), and computer-assisted semen analysis (CASA) was applied to examine semen parameters. Associations between semen parameters and urinary chromium were analyzed by means of multivariate linear regression analysis. Multivariate analysis showed a negative association between the urinary concentrations of chromium and progressive motility (β = - 0.014, p = 0.040) and total motility (β = - 1.077, p = 0.048), while other semen parameters did not show any statistically significant changes. Urinary chromium could influence semen quality parameters and impair male fecundity.
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Affiliation(s)
- Gaurab Pokhrel
- Department of Urology; Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095, Jiefang Ave, Wuhan, Hubei, China
| | - Yihao Shi
- MOE Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, China
| | - Wangcheng Wang
- MOE Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, China
| | - Shikha Upadhyaya Khatiwada
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhongyang Sun
- MOE Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, China
| | - Jianqiao Yan
- MOE Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, China
| | - Jihong Liu
- Department of Urology; Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No.1095, Jiefang Ave, Wuhan, Hubei, China.
| | - Dan Zheng
- MOE Key Laboratory of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, Hubei, China.
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8
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Establishment and functional characterization of a murine primary Sertoli cell line deficient of connexin43. Cell Tissue Res 2020; 381:309-326. [PMID: 32328805 PMCID: PMC7369266 DOI: 10.1007/s00441-020-03203-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 03/12/2020] [Indexed: 12/12/2022]
Abstract
The Sertoli cell (SC) specific connexin43 (Cx43) knockout (SCCx43KO) mouse line is ideal to gain insight into the mechanistic gap junction formation in SC and the seminiferous epithelium. A method for developing primary SC cultures from these mice was established, validated and successfully characterized via polymerase chain reaction, immunohistochemistry, immunofluorescence (IF), and Western blots (WB). It was evident that both knockout (KO) and wild-type (WT) primary cell cultures were similar in morphology. These highly pure SC cultures were subjected to cell proliferation assays indicating no notable proliferation in cultures of both genotypes. Measurements of cell monolayer integrity indicated significant increases in transepithelial electrical resistance and consequently in tight junction expression of the KO cultures. Using semi-quantitative WB and IF, tight junction protein claudin-11 was analyzed. These results support a role for Cx43 in regulating blood-testis barrier (BTB) function, composition, and dynamics in vitro. Thus, the SC deficient Cx43 cell cultures may provide a valuable in vitro tool for a better understanding of the mechanistic role of Cx43 in spermatogenesis and BTB assembly.
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Durand P, Blondet A, Martin G, Carette D, Pointis G, Perrard MH. Effects of a mixture of low doses of atrazine and benzo[a]pyrene on the rat seminiferous epithelium either during or after the establishment of the blood-testis barrier in the rat seminiferous tubule culture model. Toxicol In Vitro 2020; 62:104699. [DOI: 10.1016/j.tiv.2019.104699] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/19/2019] [Accepted: 10/22/2019] [Indexed: 10/25/2022]
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10
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Yuan L, Bai D, Meng L, Wang H, Sun Z, An T, Chen Z, Deng X, Zhang X. Effects of intragastric administration of La 2O 3 nanoparticles on mouse testes. J Toxicol Sci 2020; 45:411-422. [DOI: 10.2131/jts.45.411] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Lu Yuan
- College of Public Health, North China University of Science and Technology, China
| | - Disi Bai
- College of psychology, North China University of Science and Technology, China
| | - Lijun Meng
- Department of Environmental and Chemical Engineering, Tangshan University, China
| | - Hong Wang
- College of psychology, North China University of Science and Technology, China
| | - Zhaoyu Sun
- College of psychology, North China University of Science and Technology, China
| | - Tianyang An
- College of Ji Tang, North China University of Science and Technology, China
| | - Zhenfei Chen
- Environmental Monitoring Center of Tang Shan, China
| | - Xuenan Deng
- Department of Social science, Tangshan Normal University, China
| | - Xiujun Zhang
- College of Public Health, North China University of Science and Technology, China
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11
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Ma B, Zhang J, Zhu Z, Zhao A, Zhou Y, Ying H, Zhang Q. Luteolin Ameliorates Testis Injury and Blood–Testis Barrier Disruption through the Nrf2 Signaling Pathway and by Upregulating Cx43. Mol Nutr Food Res 2019; 63:e1800843. [DOI: 10.1002/mnfr.201800843] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 02/21/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Bo Ma
- School of Pharmaceutical SciencesNanjing Tech University Nanjing 210009 P. R. China
| | - Jie Zhang
- School of Pharmaceutical SciencesNanjing Tech University Nanjing 210009 P. R. China
| | - Zhiming Zhu
- School of Pharmaceutical SciencesNanjing Tech University Nanjing 210009 P. R. China
| | - Ang Zhao
- School of Pharmaceutical SciencesNanjing Tech University Nanjing 210009 P. R. China
| | - Yanfen Zhou
- School of Pharmaceutical SciencesNanjing Tech University Nanjing 210009 P. R. China
| | - Hanjie Ying
- School of Life Science & Pharmaceutical EngineeringNanjing University of Technology Nanjing 210009 P. R. China
| | - Qi Zhang
- School of Pharmaceutical SciencesNanjing Tech University Nanjing 210009 P. R. China
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Guimarães ATB, de Oliveira Ferreira R, de Souza JM, da Costa Estrela D, Talvani A, Souza DMS, Rocha TL, Malafaia G. Evaluating the reproductive toxicology of tannery effluent in male SWISS mice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 648:1440-1452. [PMID: 30340289 DOI: 10.1016/j.scitotenv.2018.08.253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 08/19/2018] [Accepted: 08/19/2018] [Indexed: 06/08/2023]
Abstract
The transformation of skin in-natura into leather in tannery industries generates large volumes of organic matter that attract small mammals. i.e., rodents living close to these facilities. Animals foraging in the backyards of such industries get exposed to the effluent produced by them; however, attention has not been given to the impacts of such exposure on the reproductive biology of these animals. Thus, our study assessed whether the direct exposure to this effluent for periods longer than 90 days leads to reproductive loss in male Swiss mice. We assessed animals' sexual behavior at the end of the experimental period and analyzed their testicular histology, as well as semen quality and volume, besides measuring pro-inflammatory markers and assessing the reproductive performance of the exposed animals. Based on the herein collected data, mice exposed to the gross effluent collected in the backyard of a tannery industry, as well as to the effluent diluted in 5% of water, presented behavioral and histological changes in the testes, disorganized germinal cells in the seminiferous tubules and inflammatory process in intertubular spaces. The inflammatory process resulted from increased proinflammatory cytokine (IFN-gamma and CCL2) concentrations in the testes, fact that explained the larger number of sperm abnormalities and the reduced number of produced sperms. These factors, along with the previously reported changes, may have led to the low reproductive performance of animals exposed to the tested pollutant, which was assessed through the lethal dominant test. This pioneering article addressed the reproductive impact caused by the direct exposure of small rodents to tannery effluents. The research helped better understanding how these pollutants can influence natural ecosystems.
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Affiliation(s)
- Abraão Tiago Batista Guimarães
- Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute of Education, Science and Technology, - Urutaí Campus, GO, Brazil
| | - Raíssa de Oliveira Ferreira
- Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute of Education, Science and Technology, - Urutaí Campus, GO, Brazil
| | - Joyce Moreira de Souza
- Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute of Education, Science and Technology, - Urutaí Campus, GO, Brazil
| | | | - André Talvani
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, GO, Brazil
| | - Débora Maria Soares Souza
- Laboratory of Environmental Biotechnology and Ecotoxicology, Institute of Tropical Pathology and Public Health, Federal University of Goiás, Goiania, GO, Brazil
| | - Thiago Lopes Rocha
- Inflammation Immunobiology Lab, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Guilherme Malafaia
- Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute of Education, Science and Technology, - Urutaí Campus, GO, Brazil.
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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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14
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Zheng W, Ge F, Wu K, Chen X, Li X, Chen Y, Lv Y, Lian Q, Ge RS. In utero exposure to hexavalent chromium disrupts rat fetal testis development. Toxicol Lett 2018; 299:201-209. [PMID: 30315952 DOI: 10.1016/j.toxlet.2018.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 09/30/2018] [Accepted: 10/08/2018] [Indexed: 12/23/2022]
Abstract
Hexavalent chromium (Cr6+) acts as an endocrine disruptor. Herein, we investigated effects of Cr6+ on the development of rat fetal Leydig and Sertoli cells, which support differentiation of the male reproductive tract in late gestation. Female pregnant Sprague Dawley rats were gavaged with potassium dichromate (0, 3, 6, and 12 mg/kg) from gestational days (GD) 12 to GD 21. Leydig and Sertoli cell function was evaluated by investigating serum testosterone levels, cell number and distribution, and the expression levels of Leydig and Sertoli cell genes and proteins. Cr6+ increased serum testosterone level at dose of 3 mg/kg (1.170 ± 0.121 ng/ml vs. 0.720 ± 0.082 ng/ml in the control), while lowered it at dose of 12 mg/kg (0.400 ± 0.098 ng/ml). In addition, it showed that Cr6+ dose-dependently reduced Leydig cell size and cytoplasmic size and decreased the percentage of medium fetal Leydig cell cluster at dose of 12 mg/kg. Further study demonstrated that the expression of Leydig cell (Lhcgr, Scarb1, and Hsd3b1) and Sertoli cell (Fshr, Pdgfa, and Lif) genes in the testis was upregulated at dose of 3 mg/kg while the expression of Lhcgr, Hsd17b3 and Igf1 was downregulated by Cr6+ at dose of 12 mg/kg. In conclusion, Cr6+ had biphasic effects on fetal Leydig cell development with low dose to stimulate testosterone production and high dose to inhibit it, possibly via biphasically regulating growth factor gene expression in fetal Sertoli cells.
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Affiliation(s)
- Wenwen Zheng
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Fei Ge
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Keyang Wu
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Xianwu Chen
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Xiaoheng Li
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Yong Chen
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Yao Lv
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Qingquan Lian
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China.
| | - Ren-Shan Ge
- Department of Anesthesiology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China.
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Cai T, Zhang C, Zhao Z, Li S, Cai H, Chen X, Cai D, Liu W, Yan Y, Xie K, Pan H, Zeng X. The gastric mucosal protective effects of astragaloside IV in mnng-induced GPL rats. Biomed Pharmacother 2018; 104:291-299. [PMID: 29775897 DOI: 10.1016/j.biopha.2018.04.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 12/15/2022] Open
Abstract
Gastric Cancer is one of the most common types of cancer. And the occurrence of gastric carcinoma is an evolutionary histopathological stage. As a result, further research of GPL, which is a borderline of gastric cancer, is indispensable for preventing the formation and development of gastric carcinoma. Several studies have demonstrated a correlation between the expression of autophagy, apoptosis and Gastric cancer (GC). However, the effects of autophagy and apoptosis on human gastric cancer progression, particularly on gastric precancerous lesions (GPL), have not totally been investigated. At present, Astragaloside IV(AS-IV) is a saponin purified from Astragalus membranaceous Bge, a traditional Chinese herb that has been widely used for more than 2000 y in the treatment of cancer, cardiovascular and immune disorders. This study was designed to investigate the mechanism of AS-IV protecting gastric mucosa in N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)-induced GPL rats. The lesions of GIM and GED were significantly ameliorated compared with the model rats, especially crowded tubular glandular and back-to-back tubular structure, which were the dangerous borderline between GPL and GC. Western Blot analysis showed that the ratio of Bcl-2/Bax and the protein expression of Bcl-XL, p53, Beclin1, p62, ATG5 and ATG12 were decreased and the level of Caspase3 was increased in the group of AS-IV compared with the model group; RT-PCR analysis showed that the gene expression Ambra1, Beclin1, ATG5, LC3 and p62 were decreased in the group of AS-IV compared with the model group. This research manifested that the occurrence of gastric cancer was preceded by a prolonged precancerous stage, which could be ameliorated by the AS-IV. Meanwhile, the mild and moderate stage of precancerous lesions is similar with gastric adenocarcinoma in critical biological processes, including inflammation, cell proliferation, differentiation. But this lesion is very different from cancer, because it does not appear obvious invasion and malignant lesions in this pathologic stag. Further, AS-IV could regulate p53 expression to activate the Ambra1/Beclin1 complex in GPL, and it will protect the gastric mucosal injury, prevent and cure gastric mucosal atrophy, intestinal metaplasia and atypical hyperplastic lesions. It provided a potential therapeutic strategy in reversing intestinal metaplasia and dysplasia of gastric precancerous lesions and protecting the gastric mucosa in GPL rats.
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Affiliation(s)
- Tiantian Cai
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Chengzhe Zhang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Ziming Zhao
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Siyi Li
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Haobin Cai
- Department of Neurology & Psychology, Shenzhen Hospital Affiliated to Guangzhou University of Chinese Medicine, Shenzhen 518033, China
| | - Xiaodong Chen
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Dake Cai
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Wei Liu
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Yan Yan
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Kaifeng Xie
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China
| | - Huafeng Pan
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China.
| | - Xiaohui Zeng
- Guangdong Province Engineering Technology Research Institute of Traditional Chinese Medicine, Guangzhou, Guangdong 510095, China; Guangdong Provincial Key Laboratory of Research and Development in Traditional Chinese Medicine, Guangzhou, Guangdong, 510095, China.
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16
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Abstract
PURPOSE OF REVIEW Global industrialization has increased population exposure to environmental toxins. A global decline in sperm quality over the last few decades raises questions about the adverse impact of environmental toxins on male reproductive health. RECENT FINDINGS Multiple animal- and human-based studies on exposure to environmental toxins suggest a negative impact on semen quality, in terms of sperm concentration, motility, and/or morphology. These toxins may exert estrogenic and/or anti-androgenic effects, which in turn alter the hypothalamic-pituitary-gonadal axis (HPGA), induce sperm DNA damage, or cause sperm epigenetic changes. This chapter will discuss the most recent literature about the most common environmental toxins and their impact on spermatogenesis and its consequences on male fertility. Understanding the presence and underlying mechanism of these toxins will help us preserve the integrity of the male reproduction system and formulate better regulations against their indiscriminate use.
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Affiliation(s)
- Mahmoud Mima
- University of Illinois at Chicago, 820 S. Wood St., Suite 515 CSN, Chicago, IL, 60612, USA
| | - David Greenwald
- University of Illinois at Chicago, 820 S. Wood St., Suite 515 CSN, Chicago, IL, 60612, USA
| | - Samuel Ohlander
- University of Illinois at Chicago, 820 S. Wood St., Suite 515 CSN, Chicago, IL, 60612, USA.
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17
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Zhang W, Zhao Y, Zhang P, Hao Y, Yu S, Min L, Li L, Ma D, Chen L, Yi B, Tang X, Meng Q, Liu L, Wang S, Shen W, Zhang H. Decrease in male mouse fertility by hydrogen sulfide and/or ammonia can Be inheritable. CHEMOSPHERE 2018; 194:147-157. [PMID: 29202267 DOI: 10.1016/j.chemosphere.2017.11.164] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/09/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
Numerous epidemiological studies suggest that air pollutants cause a decline in the quality of human spermatozoa and thus a reduction in fertility. However, the exact cause of infertility remains unknown. Air pollution gases, such as NH3 and H2S are either free or bound to airborne particular materials (PM) and are abundant and reactive. The aim of this current investigation was to explore the impacts of NH3 and/or H2S on male fertility and the underlying mechanisms. Male mouse exposed to H2S and/or NH3 and after two generations were used to evaluate the impacts on fertility. The fertility, and spermatozoa quality parameters and proteins involved in spermatogenesis were investigated. Our current investigation demonstrates: i) H2S and/or NH3 decrease male fertility by 20-30%, reduce the spermatozoa concentration about 20-40%, decrease 10-20%, increase around 30%; ii) the reduction in male fertility by H2S and/or NH3 can be inheritable; iii) H2S and/or NH3 can diminish male fertility through the disruption of spermatogenesis without affecting other body parameters such as body weight and organ index. One component of air pollutants, for example NH3, does not have a severe impact; however, two or more pollutants such as H2S and NH3 combined can cause serious health problems, especially with regard to male fertility. We suggest that greater attention should be paid to these air pollutants to improve human health and fertility.
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Affiliation(s)
- Weidong Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China; College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Yong Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China; College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Pengfei Zhang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Yanan Hao
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Shuai Yu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Lingjiang Min
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Lan Li
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Dongxue Ma
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Liang Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Bao Yi
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Xiangfang Tang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Qingshi Meng
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Lei Liu
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Shukun Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
| | - Wei Shen
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, PR China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China.
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18
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Durand P, Martin G, Blondet A, Gilleron J, Carette D, Janczarski S, Christin E, Pointis G, Perrard MH. Effects of low doses of carbendazim or iprodione either separately or in mixture on the pubertal rat seminiferous epithelium: An ex vivo study. Toxicol In Vitro 2017; 45:366-373. [DOI: 10.1016/j.tiv.2017.05.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/18/2017] [Accepted: 05/29/2017] [Indexed: 12/19/2022]
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19
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De Toni L, Tisato F, Seraglia R, Roverso M, Gandin V, Marzano C, Padrini R, Foresta C. Phthalates and heavy metals as endocrine disruptors in food: A study on pre-packed coffee products. Toxicol Rep 2017; 4:234-239. [PMID: 28959644 PMCID: PMC5615111 DOI: 10.1016/j.toxrep.2017.05.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/05/2017] [Accepted: 05/16/2017] [Indexed: 01/08/2023] Open
Abstract
Phthalate plasticizers and heavy metals are widely recognized to be pollutants that interfere with key developmental processes such as masculinization. We investigated the release of phthalates and heavy metals in coffee brewed from coffee packed in single-serve coffee containers made from different types of materials: metal, biodegradable and plastics. We detected with GC-MS small amounts phthalates, below the tolerated daily risks levels, in all the coffees prepared from the different types of capsules. Specifically, Di (2-ethyl-hexyl)-phthalate and DiBP: Diisobuthyl-pthalate were ubiquitously present despite the high variability among the samples (respective range 0.16-1.87 μg/mL and 0.01-0.36 μg/mL). Whereas, diethyl-phthalate (range 0.20-0.26 μg/mL) and di-n-buthyl-phthalate (range 0.02-0.14 μg/mL) were detected respectively in one and three out of the four types of capsule tested. In contrast, we detected by atomic mass spectrometry on mineralized samples heavy metals lead (Pb) and nickel (Ni), in all coffee tested. PB levels (respective range 0.32-211.57 μg/dose) accounted for 42-79%, whereas Ni levels (respective range 166.25-1950.26 μg/dose) accounted for >100% of the tolerable daily intake. These results add to the already present concerns related to the multiple pathways of human exposure and the ubiquitous presence of these pollutants in consumer products and their long-term effect on human health.
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Affiliation(s)
- Luca De Toni
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, 35128 Padova, Italy
| | - Francesco Tisato
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council-CNR, 35127 Padova, Italy
| | - Roberta Seraglia
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council-CNR, 35127 Padova, Italy
| | - Marco Roverso
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council-CNR, 35127 Padova, Italy
| | - Valentina Gandin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
| | - Cristina Marzano
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, 35131 Padova, Italy
| | - Roberto Padrini
- Clinical Pharmacology Unit, Department of Medicine DIMED, School of Medicine, University of Padova, 35128, Padova, Italy
| | - Carlo Foresta
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, 35128 Padova, Italy
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20
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Male reproductive toxicity of CrVI: In-utero exposure to CrVI at the critical window of testis differentiation represses the expression of Sertoli cell tight junction proteins and hormone receptors in adult F 1 progeny rats. Reprod Toxicol 2017; 69:84-98. [PMID: 28192182 DOI: 10.1016/j.reprotox.2017.02.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 01/19/2017] [Accepted: 02/08/2017] [Indexed: 11/24/2022]
Abstract
The effect of gestational exposure to CrVI (occupational/environmental pollutant and target to Sertoli cells(SC)) was tested in a rat model during the testicular differentiation from the bipotential gonad may interrupt spermatogenesis by disrupting SC tight junctions(TJ) and it's proteins and hormone receptors. Pregnant Wistar rats were exposed to 50/100/200ppm CrVI through drinking water during embryonic days 9-14. On Postnatal day 120, testes were subjected to ion exchange chromatographic analysis and revealed increased level of CrIII in SCs and germ cells, serum and testicular interstitial fluid(TIF). Microscopic analyses showed seminiferous tubules atrophy and disruption of SC TJ, which also recorded decreased testosterone in TIF. mRNA and Protein expression analyses attested decreased level of Fshr, Ar, occludin and claudin-11 in SCs. Immunofluorescent detection revealed weak signal of TJ proteins. Taken together, we concluded that gestational exposure to CrVI interferes with the expression of SC TJ proteins due to attenuated expression of hormone receptors.
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21
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Ali S, Chaspoul F, Anderson L, Bergé-Lefranc D, Achard V, Perrin J, Gallice P, Guichaoua M. Mapping Fifteen Trace Elements in Human Seminal Plasma and Sperm DNA. Biol Trace Elem Res 2017; 175:244-253. [PMID: 27278963 DOI: 10.1007/s12011-016-0772-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 05/31/2016] [Indexed: 12/26/2022]
Abstract
Studies suggest a relationship between semen quality and the concentration of trace elements in serum or seminal plasma. However, trace elements may be linked to DNA and capable of altering the gene expression patterns. Thus, trace element interactions with DNA may contribute to the mechanisms for a trans-generational reproductive effect. We developed an analytical method to determine the amount of trace elements bound to the sperm DNA, and to estimate their affinity for the sperm DNA by the ratio: R = Log [metal concentration in the sperm DNA/metal concentration in seminal plasma]. We then analyzed the concentrations of 15 trace elements (Al, Cd, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Ti, V, Zn, As, Sb, and Se) in the seminal plasma and the sperm DNA in 64 normal and 30 abnormal semen specimens with Inductively Coupled Plasma/Mass Spectrometry (ICP-MS). This study showed all trace elements were detected in the seminal plasma and only metals were detected in the sperm DNA. There was no correlation between the metals' concentrations in the seminal plasma and the sperm DNA. Al had the highest affinity for DNA followed by Pb and Cd. This strong affinity is consistent with the known mutagenic effects of these metals. The lowest affinity was observed for Zn and Ti. We observed a significant increase of Al linked to the sperm DNA of patients with oligozoospermia and teratozoospermia. Al's reproductive toxicity might be due to Al linked to DNA, by altering spermatogenesis and expression patterns of genes involved in the function of reproduction.
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Affiliation(s)
- Sazan Ali
- Department of Biology, Faculty of Science and Education Sciences, School of Science, University of Sulaimani, Sulaimani, Kurdistan Region, Iraq
- IMBE, UMR CNRS, IRD, Faculté de Médecine, Aix Marseille Université, Avignon Université, Marseille, France
| | - Florence Chaspoul
- IMBE, UMR CNRS, IRD, Faculté de Médecine, Aix Marseille Université, Avignon Université, Marseille, France.
- Laboratoire de Chimie Physique et Prévention des risques et Nuisances Technologiques, Faculté de Pharmacie, Marseille, France.
| | - Loundou Anderson
- Methodological Assistance Unity for Clinical Research, Department of Public Health, Faculty of Medicine, Marseille, France
| | - David Bergé-Lefranc
- IMBE, UMR CNRS, IRD, Faculté de Médecine, Aix Marseille Université, Avignon Université, Marseille, France
- Laboratoire de Chimie Physique et Prévention des risques et Nuisances Technologiques, Faculté de Pharmacie, Marseille, France
| | - Vincent Achard
- IMBE, UMR CNRS, IRD, Faculté de Médecine, Aix Marseille Université, Avignon Université, Marseille, France
- Department of Gynecology Obstetrics and Reproduction (Gynepole), CECOS Laboratory of Biology of Reproduction, AP-HM La Conception University Hospital, Marseille, France
| | - Jeanne Perrin
- IMBE, UMR CNRS, IRD, Faculté de Médecine, Aix Marseille Université, Avignon Université, Marseille, France
- Department of Gynecology Obstetrics and Reproduction (Gynepole), CECOS Laboratory of Biology of Reproduction, AP-HM La Conception University Hospital, Marseille, France
| | - Philippe Gallice
- IMBE, UMR CNRS, IRD, Faculté de Médecine, Aix Marseille Université, Avignon Université, Marseille, France
- Laboratoire de Chimie Physique et Prévention des risques et Nuisances Technologiques, Faculté de Pharmacie, Marseille, France
| | - Marie Guichaoua
- IMBE, UMR CNRS, IRD, Faculté de Médecine, Aix Marseille Université, Avignon Université, Marseille, France
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The Protective Effect of Selenium on Chronic Zearalenone-Induced Reproductive System Damage in Male Mice. Molecules 2016; 21:molecules21121687. [PMID: 27941626 PMCID: PMC6274099 DOI: 10.3390/molecules21121687] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 12/02/2016] [Accepted: 12/05/2016] [Indexed: 11/17/2022] Open
Abstract
This study aims to explore the protective effect of selenium (Se) on chronic zearalenone (ZEN)-induced reproductive system damage in male mice and the possible protective molecular mechanism against this. The chronic ZEN-induced injury mouse model was established with the continuous intragastric administration of 40 mg/kg body mass (B.M.) ZEN for 28 days. Then, interventions with different doses (0.1, 0.2, and 0.4 mg/kg B.M.) of Se were conducted on mice to analyse the changes in organ indexes of epididymis and testis, antioxidant capability of testis, serum level of testosterone, sperm concentration and motility parameters, and the expression levels of apoptosis-associated genes and blood testis barrier- (BTB) related genes. Our results showed that Se could greatly improve the ZEN-induced decrease of epididymis indexes and testis indexes. Results also showed that the decrease in sperm concentration, sperm normality rate, and sperm motility parameters, including percentage of motile sperm (motile), tropism percentage (progressive) and sperm average path velocity (VAP), caused by ZEN were elevated upon administration of the higher dose (0.4 mg/kg) and intermediate dose (0.2 mg/kg) of Se. Selenium also significantly reduced the content of malondialdehyde (MDA) but enhanced the activities of antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GPx) in the testis tissue. Further research demonstrated that ZEN increased the level of mRNA expression of BCL2-associated X protein (Bax) and caspase 3 (Casp3), decreased the level of mRNA expression of B cell leukemia/lymphoma 2 (Bcl2), vimentin (Vim) and cadherin 2 (Cdh2), whereas the co-administration of Se reversed these gene expression levels. Our results indicated that high levels of Se could protect against reproductive system damage in male mice caused by ZEN and the mechanism might such be that Se improved mice antioxidant ability, inhibited reproductive cell apoptosis, and increased the decrease of BTB integrity-related genes caused by ZEN.
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Regulation of steroid hormones and energy status with cysteamine and its effect on spermatogenesis. Toxicol Appl Pharmacol 2016; 313:149-158. [DOI: 10.1016/j.taap.2016.10.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 10/25/2016] [Accepted: 10/30/2016] [Indexed: 01/23/2023]
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Jenardhanan P, Panneerselvam M, Mathur PP. Effect of environmental contaminants on spermatogenesis. Semin Cell Dev Biol 2016; 59:126-140. [DOI: 10.1016/j.semcdb.2016.03.024] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 03/30/2016] [Accepted: 03/31/2016] [Indexed: 11/16/2022]
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25
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Effects of four nucleoside analogues used as antiviral agents on rat Sertoli cells (SerW3) in vitro. Arch Toxicol 2016; 90:1975-81. [PMID: 27224990 DOI: 10.1007/s00204-016-1743-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/12/2016] [Indexed: 10/21/2022]
Abstract
Some nucleoside analogues are used to treat herpes simplex and other viral infections. They are known to impair spermatogenesis, but published data are scarce. We studied the effects of four nucleosides on SerW3 cells, a rat Sertoli cell line. Cells were cultured for 3 days in DMEM supplemented with four different concentrations of each drug. Aciclovir and ganciclovir were added at concentrations of 0.3, 1, 3 and 10 mg/l medium; penciclovir and its prodrug famciclovir were used at higher concentrations (3, 10, 30, 100 mg/l medium). After a culture period of 3 days, we analysed the expression of connexin43, N-cadherin and the cytoskeleton protein vimentin by Western blot. Aciclovir caused a clear-cut effect at the highest concentration tested (10 mg/l), which is less than the peak plasma concentration achieved in patients during intravenous therapy with the drug. Connexin43, vimentin and N-cadherin content decreased to 49.8 ± 17, 44.0 ± 4 and 75.4 ± 1.5 % of the control values, respectively (n = 3; mean ± SD). Similar effects were observed with the prodrug ganciclovir (43.2 ± 10.8; 54.1 ± 11.9; 84.4 ± 10.8 % of controls). Penciclovir caused less pronounced effects at 10 mg/l medium (82.1 ± 20.6; 90.0 ± 12.0; 76.5 ± 17.7 % of controls). Only a slight effect was observed with famciclovir. Even at a 10-fold concentration (100 mg/l), just moderate changes were induced. In summary, we observed clear-cut effects with aciclovir and ganciclovir on Sertoli cells in vitro at therapeutically relevant concentrations and identified connexin43 as the most sensitive marker.
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Use of a rat ex-vivo testis culture method to assess toxicity of select known male reproductive toxicants. Reprod Toxicol 2016; 60:92-103. [DOI: 10.1016/j.reprotox.2016.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 01/12/2016] [Accepted: 01/18/2016] [Indexed: 01/21/2023]
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Dynamic changes in protein interaction between AKAP95 and Cx43 during cell cycle progression of A549 cells. Sci Rep 2016; 6:21224. [PMID: 26880274 PMCID: PMC4754773 DOI: 10.1038/srep21224] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 01/20/2016] [Indexed: 01/11/2023] Open
Abstract
Here we show that A-kinase anchoring protein 95 (AKAP95) and connexin 43 (Cx43) dynamically interact during cell cycle progression of lung cancer A549 cells. Interaction between AKAP95 and Cx43 at different cell cycle phases was examined by tandem mass spectrometry(MS/MS), confocal immunofluorescence microscopy, Western blot, and co-immunoprecipitation(Co-IP). Over the course of a complete cell cycle, interaction between AKAP95 and Cx43 occurred in two stages: binding stage from late G1 to metaphase, and separating stage from anaphase to late G1. The binding stage was further subdivided into complex binding to DNA in interphase and complex separating from DNA in metaphase. In late G1, Cx43 translocated to the nucleus via AKAP95; in anaphase, Cx43 separated from AKAP95 and aggregated between two daughter nuclei. In telophase, Cx43 aggregated at the membrane of the cleavage furrow. After mitosis, Cx43 was absent from the furrow membrane and was located in the cytoplasm. Binding between AKAP95 and Cx43 was reduced by N-(2-[P-Bromocinnamylamino]-ethyl)-5-isoquinolinesulfonmide (H89) treatment and enhanced by Forskolin. dynamic interaction between AKAP95 and Cx43 varies with cell cycle progression to regulate multiple biological processes.
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28
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Kidder GM, Cyr DG. Roles of connexins in testis development and spermatogenesis. Semin Cell Dev Biol 2016; 50:22-30. [PMID: 26780117 DOI: 10.1016/j.semcdb.2015.12.019] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 12/23/2015] [Indexed: 02/06/2023]
Abstract
The development and differentiation of cells involved in spermatogenesis requires highly regulated and coordinated interactions between cells. Intercellular communication, particularly via connexin43 (Cx43) gap junctions, plays a critical role in the development of germ cells during fetal development and during spermatogenesis in the adult. Loss of Cx43 in the fetus results in a decreased number of germ cells, while the loss of Cx43 in the adult Sertoli cells results in complete inhibition of spermatogenesis. Connexins 26, 32, 33, 36, 45, 46 and 50 have also been localized to specific compartments of the testis in various mammals. Loss of Cx46 is associated with an increase in germ cell apoptosis and loss of the integrity of the blood-testis barrier, while loss of other connexins appears to have more subtle effects within the seminiferous tubule. Outside the seminiferous tubule, the interstitial Leydig cells express connexins 36 and 45 along with Cx43; deletion of the latter connexin did not reveal it to be crucial for steroidogenesis or for the development and differentiation of Leydig cells. In contrast, loss of Cx43 from Sertoli cells results in Leydig cell hyperplasia, suggesting important cross-talk between Sertoli and Leydig cells. In the epididymis connexins 26, 30.3, Cx31.1, 32, and 43 have been identified and differentiation of the epithelium is associated with dramatic changes in their expression. Decreased expression of Cx43 results in decreased sperm motility, a function acquired by spermatozoa during epididymal transit. Clearly, intercellular gap junctional communication within the testis and epididymis represents a critical aspect of male reproductive function and fertility. The implications of this mode of intercellular communication for male fertility remains a poorly understood but important facet of male reproduction.
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Affiliation(s)
- Gerald M Kidder
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, The University of Western Ontario, London, Ontario N6A 5C1, Canada.
| | - Daniel G Cyr
- INRS-Institut Armand-Frappier, University of Québec, 531 boul. des Prairies, Laval, Québec H7V 1B7, Canada
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29
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Carette D, Blondet A, Martin G, Montillet G, Janczarski S, Christin E, Pointis G, Durand P, Perrard MH. Endocrine Disrupting Effects of Noncytotoxic Doses of Carbendazim on the Pubertal Rat Seminiferous Epithelium: An Ex Vivo Study. ACTA ACUST UNITED AC 2015. [DOI: 10.1089/aivt.2015.0017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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30
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Gerber J, Heinrich J, Brehm R. Blood-testis barrier and Sertoli cell function: lessons from SCCx43KO mice. Reproduction 2015; 151:R15-27. [PMID: 26556893 DOI: 10.1530/rep-15-0366] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 11/10/2015] [Indexed: 01/23/2023]
Abstract
The gap junction protein connexin43 (CX43) plays a vital role in mammalian spermatogenesis by allowing for direct cytoplasmic communication between neighbouring testicular cells. In addition, different publications suggest that CX43 in Sertoli cells (SC) might be important for blood-testis barrier (BTB) formation and BTB homeostasis. Thus, through the use of the Cre-LoxP recombination system, a transgenic mouse line was developed in which only SC are deficient of the gap junction protein, alpha 1 (Gja1) gene. Gja1 codes for the protein CX43. This transgenic mouse line has been commonly defined as the SC specific CX43 knockout (SCCx43KO) mouse line. Within the seminiferous tubule, SC aid in spermatogenesis by nurturing germ cells and help them to proliferate and mature. Owing to the absence of CX43 within the SC, homozygous KO mice are infertile, have reduced testis size, and mainly exhibit spermatogenesis arrest at the level of spermatogonia, seminiferous tubules containing only SC (SC-only syndrome) and intratubular SC-clusters. Although the SC specific KO of CX43 does not seem to have an adverse effect on BTB integrity, CX43 influences BTB composition as the expression pattern of different BTB proteins (like OCCLUDIN, β-CATENIN, N-CADHERIN, and CLAUDIN11) is altered in mutant males. The supposed roles of CX43 in dynamic BTB regulation, BTB assembly and/or disassembly and its possible interaction with other junctional proteins composing this unique barrier are discussed. Data collectively indicate that CX43 might represent an important regulator of dynamic BTB formation, composition and function.
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Affiliation(s)
- Jonathan Gerber
- Institute of AnatomyUniversity of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Julia Heinrich
- Institute of AnatomyUniversity of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Ralph Brehm
- Institute of AnatomyUniversity of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany
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31
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Das J, Kang MH, Kim E, Kwon DN, Choi YJ, Kim JH. Hexavalent chromium induces apoptosis in male somatic and spermatogonial stem cells via redox imbalance. Sci Rep 2015; 5:13921. [PMID: 26355036 PMCID: PMC4564811 DOI: 10.1038/srep13921] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 08/10/2015] [Indexed: 01/07/2023] Open
Abstract
Hexavalent chromium [Cr(VI)], an environmental toxicant, causes severe male reproductive abnormalities. However, the actual mechanisms of toxicity are not clearly understood and have not been studied in detail. The present in vitro study aimed to investigate the mechanism of reproductive toxicity of Cr(VI) in male somatic cells (mouse TM3 Leydig cells and TM4 Sertoli cells) and spermatogonial stem cells (SSCs) because damage to or dysfunction of these cells can directly affect spermatogenesis, resulting in male infertility. Cr(VI) by inducing oxidative stress was cytotoxic to both male somatic cells and SSCs in a dose-dependent manner, and induced mitochondria-dependent apoptosis. Although the mechanism of Cr(VI)-induced cytotoxicity was similar in both somatic cells, the differences in sensitivity of TM3 and TM4 cells to Cr(VI) could be attributed, at least in part, to cell-specific regulation of P-AKT1, P-ERK1/2, and P-P53 proteins. Cr(VI) affected the differentiation and self-renewal mechanisms of SSCs, disrupted steroidogenesis in TM3 cells, while in TM4 cells, the expression of tight junction signaling and cell receptor molecules was affected as well as the secretory functions were impaired. In conclusion, our results show that Cr(VI) is cytotoxic and impairs the physiological functions of male somatic cells and SSCs.
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Affiliation(s)
- Joydeep Das
- Department of Animal Biotechnology, College of Animal Bioscience and Biotechnology/Animal Resources Research Center, Konkuk University, Seoul 143-701, South Korea
| | - Min-Hee Kang
- Department of Animal Biotechnology, College of Animal Bioscience and Biotechnology/Animal Resources Research Center, Konkuk University, Seoul 143-701, South Korea
| | - Eunsu Kim
- Department of Animal Biotechnology, College of Animal Bioscience and Biotechnology/Animal Resources Research Center, Konkuk University, Seoul 143-701, South Korea
| | - Deug-Nam Kwon
- Department of Animal Biotechnology, College of Animal Bioscience and Biotechnology/Animal Resources Research Center, Konkuk University, Seoul 143-701, South Korea
| | - Yun-Jung Choi
- Department of Animal Biotechnology, College of Animal Bioscience and Biotechnology/Animal Resources Research Center, Konkuk University, Seoul 143-701, South Korea
| | - Jin-Hoi Kim
- Department of Animal Biotechnology, College of Animal Bioscience and Biotechnology/Animal Resources Research Center, Konkuk University, Seoul 143-701, South Korea
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32
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Jelinek M, Zemek J, Vandrovcová M, Bačáková L, Kocourek T, Remsa J, Písařík P. Bonding and bio-properties of hybrid laser/magnetron Cr-enriched DLC layers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:1217-24. [PMID: 26478424 DOI: 10.1016/j.msec.2015.09.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 08/19/2015] [Accepted: 09/03/2015] [Indexed: 10/23/2022]
Abstract
Chromium-enriched diamond-like carbon (DLC) layers were prepared by a hybrid technology using a combination of pulsed laser deposition (PLD) and magnetron sputtering. XRD revealed no chromium peaks, indicating that the layers are mostly amorphous. Carbon (sp(2) and sp(3) bonds) and chromium bonds were determined by XPS from C 1s, O 1s, and Cr 2p photoelectron peaks. Depending on the deposition conditions, the concentration of Cr in DLC layers moved from zero to 10 at.% for as-received sample surfaces, and to about 31 at.% after mild sputter-cleaning by argon ion cluster beam. It should be noted that the most stable Cr(3+) bonding state is in Cr2O3 and Cr(OH)3, and that there is the toxic Cr(6+) state in CrO3. The surface content of hexavalent chromium in the Cr 2p3/2 spectra is rather low, but discernible. The population density of Saos-2 cells was the highest in samples containing higher concentrations of chromium 7.7 and 10 at.%. This means that higher concentrations of chromium supported the cell adhesion and proliferation. In addition, as revealed by a LIVE/DEAD viability/cytotoxicity kit, the cells on all Cr-containing samples maintained high viability (96 to 99%) on days 1 and 3 after seeding. However, this seemingly positive cell behavior could be associated with the risk of dedifferentiation and oncogenic transformation of cells.
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Affiliation(s)
- Miroslav Jelinek
- Institute of Physics, Academy of Sciences of the Czech Republic, v.v.i, Na Slovance 2, 18221 Prague, Czech Republic; Czech Technical University in Prague, Faculty of Biomedical Engineering, nam. Sitna 3105, 27201 Kladno, Czech Republic.
| | - Josef Zemek
- Institute of Physics, Academy of Sciences of the Czech Republic, v.v.i, Na Slovance 2, 18221 Prague, Czech Republic
| | - Marta Vandrovcová
- Institute of Physiology of the Czech Academy of Sciences of the Czech Republic, v.v.i., Videnska 1083, 14220 Prague 4, Czech Republic
| | - Lucie Bačáková
- Institute of Physiology of the Czech Academy of Sciences of the Czech Republic, v.v.i., Videnska 1083, 14220 Prague 4, Czech Republic
| | - Tomáš Kocourek
- Institute of Physics, Academy of Sciences of the Czech Republic, v.v.i, Na Slovance 2, 18221 Prague, Czech Republic; Czech Technical University in Prague, Faculty of Biomedical Engineering, nam. Sitna 3105, 27201 Kladno, Czech Republic
| | - Jan Remsa
- Institute of Physics, Academy of Sciences of the Czech Republic, v.v.i, Na Slovance 2, 18221 Prague, Czech Republic; Czech Technical University in Prague, Faculty of Biomedical Engineering, nam. Sitna 3105, 27201 Kladno, Czech Republic
| | - Petr Písařík
- Institute of Physics, Academy of Sciences of the Czech Republic, v.v.i, Na Slovance 2, 18221 Prague, Czech Republic; Czech Technical University in Prague, Faculty of Biomedical Engineering, nam. Sitna 3105, 27201 Kladno, Czech Republic
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Singh AP, Cummings CA, Mishina Y, Archer TK. SOX8 regulates permeability of the blood-testes barrier that affects adult male fertility in the mouse. Biol Reprod 2013; 88:133. [PMID: 23595903 DOI: 10.1095/biolreprod.112.107284] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Sertoli cells provide nutritional and physical support to germ cells during spermatogenesis. Sox8 encodes a member of the high mobility group of transcription factors closely related to Sox9 and Sox10. Sertoli cells express SOX8 protein, and its elimination results in an age-dependent dysregulation of spermatogenesis, causing adult male infertility. Among the claudin genes with altered expression in the Sox8(-/-) testes, was claudin-3, which is required for the regulation and maintenance of the blood-testes barrier (BTB). Because the BTB is critical in restricting small molecules in the luminal compartment of the seminiferous tubules, the aim of this study was to analyze the level of tight junction proteins (claudin-3, claudin-11, and occludin) and BTB permeability in Sox8(-/-) adult testes. The acetylation level of alpha-tubulin and microtubule organization was also evaluated because microtubules are critical in maintaining the microenvironment of the seminiferous epithelium. Western blot analysis shows that claudin-3 protein is decreased in Sox8(-/-) testes. Chromatin immunoprecipitation confirmed that SOX8 binds at the promoter region of claudin-3. Claudin-3 was localized to the Sertoli cell tight junctions of wild-type testes and significantly decreased in the Sox8(-/-) testes. The use of biotin tracers showed increased BTB permeability in the Sox8(-/-) adult testes. Electron microscopy analysis showed that microtubule structures were destabilized in the Sox8(-/-) testes. These results suggest that Sox8 is essential in Sertoli cells for germ cell differentiation, partly by controlling the microenvironment of the seminiferous epithelium.
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Affiliation(s)
- Ajeet Pratap Singh
- Chromatin & Gene Expression Section, Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA
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