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Gaml-Sørensen A, Frølich MK, Brix N, Ernst A, Bonde JPE, Hougaard KS, Tøttenborg SS, Clemmensen PJ, Toft G, Ramlau-Hansen CH. Sleep duration and biomarkers of fecundity in young men: a cross-sectional study from a population-based cohort. Andrology 2024; 12:1125-1136. [PMID: 37985426 DOI: 10.1111/andr.13560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/05/2023] [Accepted: 11/09/2023] [Indexed: 11/22/2023]
Abstract
BACKGROUND Poor male fecundity is of concern and warrants the identification of potential modifiable risk factors. Short and long sleep duration might be risk factors for poor male fecundity although evidence in this research field is inconsistent. OBJECTIVES To investigate the association between sleep duration and biomarkers of male fecundity in young men. MATERIALS AND METHODS We conducted a cross-sectional study of 1,055 young men from the Fetal Programming of Semen Quality (FEPOS) cohort, Denmark, 2017-2019. Sleep duration was obtained from an online survey answered by the participants prior to the clinical visit, where semen and blood samples were obtained, and testis volume was self-assessed using an Orchidometer. Percentage differences in semen characteristics, testes volume, and reproductive hormone levels were analysed according to sleep duration using multivariable negative binomial regression models. Sleep duration was dichotomised (recommended (6-9 h/night) versus deviant sleep) and visualised continuously as restricted cubic spline plots. RESULTS Deviation from recommended sleep duration was associated with higher high DNA stainability (HDS) of 5% (95% CI: -1%; 13%), higher testosterone of 3% (95% CI: 0%; 7%) and higher free androgen index (FAI) of 6% (95% CI: 0%; 13%). The spline plots overall supported these results, suggesting u-shaped associations between sleep duration and HDS, testosterone and FAI, a linear association between sleep duration and semen volume and sex hormone binding globulin (SHBG) and an inverse u-shaped association with normal morphology. DISCUSSION Information on sleep duration was obtained by self-report in broad categories with at least 3 h intervals. We were not able to investigate short or long sleep duration separately, since only few participants reported this. CONCLUSION Sleep duration was associated with some biomarkers of fecundity in young men. Maintaining a recommended sleep duration may thus be beneficial for young men with regard to reproductive health.
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Affiliation(s)
| | | | - Nis Brix
- Department of Public Health, Aarhus University, Aarhus C, Denmark
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus N, Denmark
| | - Andreas Ernst
- Department of Public Health, Aarhus University, Aarhus C, Denmark
- Department of Urology, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Peter Ellekilde Bonde
- Department of Occupational and Environmental Medicine, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen NV, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen K, Denmark
| | - Karin Sørig Hougaard
- Department of Public Health, University of Copenhagen, Copenhagen K, Denmark
- National Research Centre for the Working Environment, Copenhagen Oest, Denmark
| | - Sandra Søgaard Tøttenborg
- Department of Occupational and Environmental Medicine, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen NV, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen K, Denmark
| | | | - Gunnar Toft
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus N, Denmark
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Li H, Liu J, Nong W, Shen M, Dou S, Sun S, Wang J. Aluminum exposure impairs oocyte quality via subcellular structure disruption and DNA damage-related apoptosis in mice. J Environ Sci (China) 2024; 139:308-319. [PMID: 38105057 DOI: 10.1016/j.jes.2023.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/08/2023] [Accepted: 04/10/2023] [Indexed: 12/19/2023]
Abstract
Aluminum (Al) can lead to an exposure of creature in varieties ways for its universality, and it could disturb normal physiological metabolism, with the damage to multisystem including reproduction. Since the oocyte quality is critical for female reproduction, we inspected the toxicity of Al on mouse oocyte maturation. We constructed in vitro exposure mouse model, and we found that 5 mmol/L Al had adverse effects on oocyte maturation by impairing organelle and cytoskeleton. Aberrant spindle and misaligned chromosomes which might be considered to be caused by elevated levels of acetylation, as well as abnormal distribution of actin dynamics could hinder normal meiosis of oocytes. Organelle dysfunction indicated that Al affected proteins synthesis, transport and digestion, which would further damage oocyte maturation. In order to explore the mechanism of Al toxicity, our further investigation demonstrated that Al caused mitochondrial dysfunction and imbalance calcium homeostasis, resulting in limited energy supply. Moreover, high level of reactive oxygen species, DNA damage and apoptosis caused by oxidative stress were also the manifestation of Al toxicity on oocytes. In conclusion, our study provided the evidence that Al exposure affected oocyte quality through its effects on spindle organization, actin dynamics, organelle function and the induction of DNA damage-related apoptosis with mouse model.
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Affiliation(s)
- Hongge Li
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi 533000, China; College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jingcai Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Weihua Nong
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi 533000, China
| | - Mengying Shen
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi 533000, China
| | - Sheng Dou
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi 533000, China
| | - Shaochen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
| | - Junli Wang
- The Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi 533000, China; School of Medical Laboratory, Youjiang Medical University for Nationalities, Guangxi 533000, China; Industrial College of Biomedicine and Health Industry, Youjiang Medical University for Nationalities, Guangxi 533000, China; Reproductive Medicine, Guangxi Medical and Health Key Discipline Construction Project, The Affiliated Hospital of Youjiang Medical University for Nationalities, Guangxi 533000, China.
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Wan X, Wang L, Khan MA, Peng L, Zhang K, Sun X, Yi X, Wang Z, Chen K. Shift work promotes adipogenesis via cortisol-dependent downregulation of EGR3-HDAC6 pathway. Cell Death Discov 2024; 10:129. [PMID: 38467615 PMCID: PMC10928160 DOI: 10.1038/s41420-024-01904-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 03/13/2024] Open
Abstract
The disruption of circadian rhythms caused by long-term shift work can cause metabolic diseases such as obesity. Early growth response 3 (EGR3) is a member of early growth response (EGR) family, which is involved in several cellular responses, had been reported as a circadian rhythm gene in suprachiasmatic nucleus. In this research, EGR3 was found to be widely expressed in the different tissue of human and mice, and downregulated in adipose tissue of obese subjects and high-fat diet mice. Moreover, EGR3 was found negatively regulated by cortisol. In addition, EGR3 is a key negative modulator of hADSCs and 3T3-L1 adipogenesis via regulating HDAC6, which is a downstream target gene of EGR3 and a negative regulator of adipogenesis and lipogenesis. These findings may explain how circadian rhythm disorder induced by shift works can cause obesity. Our study revealed a potential therapeutic target to alleviate metabolic disorders in shift workers and may provide better health guidance to shift workers.
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Affiliation(s)
- Xinxing Wan
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, PR China
| | - Linghao Wang
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, PR China
| | - Md Asaduzzaman Khan
- Department of Biochemistry and Microbiology, North South University, Dhaka, 1229, Bangladesh
- Pulmonary Department, Chobanian & Avedisian School of Medicine, Boston University, Boston, MA, 02118, USA
| | - Lin Peng
- Department of Nephrology, The First Hospital of Changsha, Changsha, 410005, Hunan, PR China
| | - Keke Zhang
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, PR China
| | - Xiaoying Sun
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, PR China
| | - Xuan Yi
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, PR China
| | - Zhouqi Wang
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, PR China
| | - Ke Chen
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, Hunan, PR China.
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Qin X, Fang S, Cai Y. Sleep disorders and risk of infertility: A meta-analysis of observational studies. PLoS One 2023; 18:e0293559. [PMID: 37906543 PMCID: PMC10617707 DOI: 10.1371/journal.pone.0293559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 10/16/2023] [Indexed: 11/02/2023] Open
Abstract
OBJECTIVE The purpose of this study was to determine the relationship between sleep disorders and risk of infertility. METHOD Three databases (PubMed, Embase, and Cochrane Library) were searched form their inception to April 30, 2023. Information of study design, control group and experimental group, number of participants, and study outcomes was extracted. The quality of the studies was evaluated using the Newcastle-Ottawa Scale (NOS scale) and the Agency for Healthcare Research and Quality (AHRQ scale). Narrative synthesis and meta-analysis were used to analyze these studies. RESULT Eight cohort, cross-sectional, and case-control studies were considered. The reviewed studies were high-quality. Pooled analysis showed that the risk of infertility was 1.43-fold higher in patients with sleep disturbance (HR = 1.43, 95% CI, 0.97-2.11, z = 1.79), but this was not statistically different; the risk was 1.58-fold higher in patients with OSA compared to those without OSA (HR = 1.58, 95%, CI, 0.99-2.52, z = 1.91), but this was not statistically significant. Wake-up time is also associated with infertility (OR = 1.14; 95%CI = 1.01-1.28; P = 0.037). For every hour they stay awake beyond 8:00 AM, participants had a 41% higher risk of infertility (P = 0.004). The early-to-bed/late-to-rise (EL), LE, and LL groups had a higher risk of infertility than the EE group. CONCLUSION The present study did not find an association between sleep disorders and the risk of infertility. Therefore, more observational studies are warranted to explore the association between sleep disorders and the risk of infertility.
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Affiliation(s)
- Xiaoxiao Qin
- Hospital-Acquired Infection Control Department, Chengdu Women’s and Children’s Central Hospital, Chengdu City, Sichuan Province, China
| | - Siyun Fang
- Department of English, Chengdu Xichuan Middle School, Chengdu City, Sichuan Province, China
| | - Yaqi Cai
- Hospital-Acquired Infection Control Department, Chengdu Women’s and Children’s Central Hospital, Chengdu City, Sichuan Province, China
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Zhang JY, Zhang MY, Xiao SY, Zheng MF, Wang JL, Sun SC, Qin L. Nivalenol disrupts mitochondria functions during porcine oocyte meiotic maturation. Toxicon 2023:107223. [PMID: 37437783 DOI: 10.1016/j.toxicon.2023.107223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/29/2023] [Accepted: 07/09/2023] [Indexed: 07/14/2023]
Abstract
Oocyte maturation is important for fertility in mammals, since the quality of oocytes directly affects fertilization, embryo attachment and survival. Nivalenol is widely present in nature as a common toxin that contaminates grain and feed, and it has been reported to cause acute toxicity, immunotoxicity, reproductive toxicity and carcinogenic effects. In this study, we explored the impact of nivalenol on the porcine oocyte maturation and its possible mechanisms. The extrusion of the first polar body was significantly inhibited after incubating oocytes with nivalenol. Meanwhile, nivalenol exposure led to the abnormal distribution of mitochondria, aberrant calcium concentration and the reduction of membrane potential caused a significant decrease in the capacity of mitochondria to generate ATP. In addition, nivalenol induced oxidative stress, and the level of ROS was significantly increased in the nivalenol-treated group, which was confirmed by the perturbation of oxidative stress-related genes. We found that nivalenol-treated oocytes showed positive Annexin-V and γH2A.X signals, indicating the occurrence of apoptosis and DNA damage. In all, our data suggest that nivalenol disrupted porcine oocyte maturation through its effects on mitochondria-related oxidative stress, apoptosis and DNA damage.
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Affiliation(s)
- Jing-Yi Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Meng-Yao Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shi-Yi Xiao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mei-Feng Zheng
- Reproductive Medicine, Guangxi Medical and Health Key Discipline Construction Project, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, 533000, China
| | - Jun-Li Wang
- Reproductive Medicine, Guangxi Medical and Health Key Discipline Construction Project, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, 533000, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Li Qin
- Reproductive Medicine, Guangxi Medical and Health Key Discipline Construction Project, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, 533000, China.
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Wu SL, Ju JQ, Ji YM, Zhang HL, Zou YJ, Sun SC. Exposure to acrylamide induces zygotic genome activation defects of mouse embryos. Food Chem Toxicol 2023; 175:113753. [PMID: 36997053 DOI: 10.1016/j.fct.2023.113753] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/21/2023] [Accepted: 03/27/2023] [Indexed: 03/30/2023]
Abstract
Acrylamide (ACR) is an important chemical raw material for wastewater treatment, paper industry and textile industry, which is widely exposed from occupational, environmental and dietary situation. ACR has neurotoxicity, genotoxicity, potential carcinogenicity and reproductive toxicity. Recent study indicates that ACR affected oocyte maturation quality. In the present study, we reported the effects of ACR exposure on zygotic genome activation (ZGA) in embryos and its related mechanism. Our results showed that ACR treatment caused 2-cell arrest in mouse embryos, indicating the failure of ZGA, which was confirmed by decreased global transcription levels and aberrant expression of ZGA-related and maternal factors. We found that histone modifications such as H3K9me3, H3K27me3 and H3K27ac levels were altered, and this might be due to the occurrence of DNA damage, showing with positive γ-H2A.X signal. Moreover, mitochondrial dysfunction and high levels of ROS were detected in ACR treated embryos, indicating that ACR induced oxidative stress, and this might further cause abnormal distribution of endoplasmic reticulum, Golgi apparatus and lysosomes. In conclusion, our results indicated that ACR exposure disrupted ZGA by inducing mitochondria-based oxidative stress, which further caused DNA damage, aberrant histone modifications and organelles in mouse embryos.
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Affiliation(s)
- Si-Le Wu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jia-Qian Ju
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yi-Ming Ji
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hao-Lin Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuan-Jing Zou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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