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Fofana M, Li Z, Li H, Li W, Wu L, Lu L, Liu Q. Decreased Ubiquitination and Acetylation of Histones 3 and 4 Are Associated with Obesity-Induced Disorders of Spermatogenesis in Mice. TOXICS 2024; 12:296. [PMID: 38668519 PMCID: PMC11055147 DOI: 10.3390/toxics12040296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/29/2024]
Abstract
BACKGROUND Obesity, a chronic metabolic disorder, is related to cardiovascular diseases, diabetes, cancer, and reproductive disorders. The relationship between obesity and male infertility is now well recognized, but the mechanisms involved are unclear. We aimed to observe the effect of obesity on spermatogenesis and to investigate the role of histone ubiquitination and acetylation modifications in obesity-induced spermatogenesis disorders. METHODS Thirty male C57BL/6J mice were randomly divided into two groups. The control group was fed with a general maintenance diet (12% fat), while a high-fat diet (HFD) group was fed with 40% fat for 10 weeks; then, they were mated with normal females. The fertility of male mice was calculated, testicular and sperm morphology were observed, and the expression levels of key genes and the levels of histone acetylation and ubiquitination modification during spermatogenesis were detected. RESULTS The number of sperm was decreased, as well as the sperm motility, while the number of sperm with malformations was increased. In the testes, the mRNA and protein expression levels of gonadotropin-regulated testicular RNA helicase (GRTH/DDX25), chromosome region maintenance-1 protein (CRM1), high-mobility group B2 (HMGB2), phosphoglycerate kinase 2 (PGK2), and testicular angiotensin-converting enzyme (tACE) were decreased. Furthermore, obesity led to a decrease in ubiquitinated H2A (ubH2A) and reduced levels of histone H3 acetylation K18 (H3AcK18) and histone H4 acetylation K5, K8, K12, and K16 (H4tetraAck), which disrupted protamine 1 (Prm1) deposition in testis tissue. CONCLUSION These results suggest that low levels of histone ubiquitination and acetylation are linked with obesity-induced disorders during spermatogenesis, contributing to a better understanding of obesity-induced damage to male reproduction.
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Affiliation(s)
- Mahamadou Fofana
- Center for Global Health, China International Cooperation Center for Environment and Human Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (M.F.); (Z.L.); (H.L.); (W.L.)
| | - Zhenyang Li
- Center for Global Health, China International Cooperation Center for Environment and Human Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (M.F.); (Z.L.); (H.L.); (W.L.)
| | - Han Li
- Center for Global Health, China International Cooperation Center for Environment and Human Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (M.F.); (Z.L.); (H.L.); (W.L.)
| | - Wenqi Li
- Center for Global Health, China International Cooperation Center for Environment and Human Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (M.F.); (Z.L.); (H.L.); (W.L.)
| | - Lu Wu
- Suzhou Center for Disease Control and Prevention, Suzhou Institute for Advanced Study of Public Health, Suzhou School, Nanjing Medical University, Suzhou 215004, China;
| | - Lu Lu
- Animal Core Facility, The Key Laboratory of Model Animal, Jiangsu Animal Experimental Center for Medical and Pharmaceutical Research, Nanjing Medical University, Nanjing 211166, China
| | - Qizhan Liu
- Center for Global Health, China International Cooperation Center for Environment and Human Health, The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; (M.F.); (Z.L.); (H.L.); (W.L.)
- Suzhou Center for Disease Control and Prevention, Suzhou Institute for Advanced Study of Public Health, Suzhou School, Nanjing Medical University, Suzhou 215004, China;
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Du M, Chen S, Chen Y, Yuan X, Dong H. Testicular fat deposition attenuates reproductive performance via decreased follicle-stimulating hormone level and sperm meiosis and testosterone synthesis in mouse. Anim Biosci 2024; 37:50-60. [PMID: 37641828 PMCID: PMC10766465 DOI: 10.5713/ab.23.0175] [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: 05/10/2023] [Revised: 06/10/2023] [Accepted: 08/12/2023] [Indexed: 08/31/2023] Open
Abstract
OBJECTIVE Testicular fat deposition has been reported to affect animal reproduction. However, the underlying mechanism remains poorly understood. The present study explored whether sperm meiosis and testosterone synthesis contribute to mouse testicular fat depositioninduced reproductive performance. METHODS High fat diet (HFD)-induced obesity CD1 mice (DIO) were used as a testicular fat deposition model. The serum hormone test was performed by agent kit. The quality of sperm was assessed using a Sperm Class Analyzer. Testicular tissue morphology was analyzed by histochemical methods. The expression of spermatocyte marker molecules was monitored by an immuno-fluorescence microscope during meiosis. Analysis of the synthesis of testosterone was performed by real-time polymerase chain reaction and reagent kit. RESULTS It was found that there was a significant increase in body weight among DIO mice, however, the food intake showed no difference compared to control mice fed a normal diet (CTR). The number of offspring in DIO mice decreased, but there was no significant difference from the CTR group. The levels of follicle-stimulating hormone were lower in DIO mice and their luteinizing hormone levels were similar. The results showed a remarkable decrease in sperm density and motility among DIO mice. We also found that fat accumulation affected the meiosis process, mainly reflected in the cross-exchange of homologous chromosomes. In addition, overweight increased fat deposition in the testis and reduced the expression of testosterone synthesis-related enzymes, thereby affecting the synthesis and secretion of testosterone by testicular Leydig cells. CONCLUSION Fat accumulation in the testes causes testicular cell dysfunction, which affects testosterone hormone synthesis and ultimately affects sperm formation.
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Affiliation(s)
- Miao Du
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109,
China
| | - Shikun Chen
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109,
China
- College of Veterinary Medicine, Murdoch University, Murdoch, Western Australia 6150,
Australia
| | - Yang Chen
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109,
China
| | - Xinxu Yuan
- Department of Pharmacology and Toxicology, School of Medicine, Virginia Commonwealth University, Richmond, VA 23284,
USA
| | - Huansheng Dong
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109,
China
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3
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Kaushik A, Metkari SM, Ali S, Bhartiya D. Preventing/Reversing Adverse Effects of Endocrine Disruption on Mouse Testes by Normalizing Tissue Resident VSELs. Stem Cell Rev Rep 2023; 19:2525-2540. [PMID: 37561284 DOI: 10.1007/s12015-023-10601-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/22/2023] [Indexed: 08/11/2023]
Abstract
Reproductive health of men is declining in today's world due to increased developmental exposure to endocrine-disrupting chemicals (EDCs). We earlier reported that neonatal exposure to endocrine disruption resulted in reduced numbers of seminiferous tubules in Stage VIII, decreased sperm count, and infertility along with testicular tumors in 65% of diethylstilbestrol (DES) treated mice. Epigenetic changes due to EDCs, pushed the VSELs out of a quiescent state to enter cell cycle and undergo excessive self-renewal while transition of c-KIT- stem cells into c-KIT + germ cells was blocked due to altered MMR axis (Np95, Pcna, Dnmts), global hypomethylation (reduced expression of 5-methylcytosine) and loss of imprinting at Igf2-H19 and Dlk1-Meg3 loci. The present study was undertaken to firstly show similar defects in FACS sorted VSELs from DES treated testis and to further explore the reversal of these testicular pathologies by (i) oral administration of XAR (a nano-formulation of resveratrol) or (ii) inter-tubular transplantation of mesenchymal stromal cells (MSCs). Similar defects as reported earlier in the testes were evident, based on RNAseq data, on FACS sorted VSELs from DES treated mice. Both strategies were found effective, improved spermatogenesis, increased number of tubules in Stage VIII, normalized numbers of VSELs and c-KIT + cells, improved epigenetic status of VSELs to restore quiescent state, and reduced cancer incidence from 65% after DES to 13.33% and 20% after XAR treatment or MSCs transplantation respectively. Results provide a basis for initiating clinical studies and the study falls under the umbrella of United Nations Sustainable Development Goal 3 to ensure healthy lives and well-being for all of all ages.
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Affiliation(s)
- Ankita Kaushik
- Stem Cell Biology Department, ICMR-National Institute for Research in Reproductive & Child Health, Jehangir Merwanji Street, Parel, Mumbai, 400 012, India
| | - S M Metkari
- Stem Cell Biology Department, ICMR-National Institute for Research in Reproductive & Child Health, Jehangir Merwanji Street, Parel, Mumbai, 400 012, India
| | - Subhan Ali
- Stem Cell Biology Department, ICMR-National Institute for Research in Reproductive & Child Health, Jehangir Merwanji Street, Parel, Mumbai, 400 012, India
| | - Deepa Bhartiya
- Stem Cell Biology Department, ICMR-National Institute for Research in Reproductive & Child Health, Jehangir Merwanji Street, Parel, Mumbai, 400 012, India.
- Epigeneres Biotech Pvt Ltd, Lower Parel, Mumbai, 400 013, India.
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4
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Cheng HL, Chang WT, Lin JL, Tsai CT, Cheng MC, Huang SC, Wong YC, Hsu CL. Mei-Gin Formula Ameliorates Obesity through Lipolysis, Fatty Oxidation, and Thermogenesis in High-Fat Diet-Induced Obese Rats. Foods 2023; 12:3539. [PMID: 37835191 PMCID: PMC10573010 DOI: 10.3390/foods12193539] [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: 08/29/2023] [Revised: 09/17/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
Obesity is a metabolic dysfunction characterized by excessive body fat deposition as a consequence of an energy imbalance. Novel therapeutic strategies have emerged that are safe and have comparatively low side effects for obesity treatment. Functional foods and nutraceuticals have recently received a great deal of attention because of their components with the properties of antimetabolic syndrome. Based on our previous in vitro and in vivo investigations on anti-adipogenesis activity and improved body fat accumulation in serials, the combination of three ingredients (including bainiku-ekisu, black garlic, and Mesona procumbens Hemsl), comprising the Mei-Gin formula (MGF), was eventually selected as a novel inhibitor that exhibited preventive effects against obesity. Herein, we verify the anti-obesity effects of MGF in obese rats induced by a high-fat diet and discuss the potential molecular mechanisms underlying obesity development. Oral administration of MGF significantly suppressed the final body weight, weight change, energy and water intake, subcutaneous and visceral fat mass, liver weight, hepatic total lipids and triglycerides (TG), and serum levels of TG, triglycerides (TC), low-density lipoprotein cholesterol (LDL-C), alanine transaminase (AST), uric acid, and ketone bodies and augmented fecal total lipids, TG, and cholesterol excretion in the high-dose MGF-supplemented groups. Furthermore, the corresponding lipid metabolic pathways revealed that MGF supplementation effectively increased lipolysis and fatty acid oxidation gene expression and attenuated fatty acid synthesis gene expression in the white adipose tissue (WAT) and liver and it also increased mitochondrial activation and thermogenic gene expression in the brown adipose tissue (BAT) of rats with obesity induced by a high-fat diet (HFD). These results demonstrate that the intake of MGF can be beneficial for the suppression of HFD-induced obesity in rats through the lipolysis, fatty oxidation, and thermogenesis pathway. In conclusion, these results demonstrate the anti-obesity efficacy of MGF in vivo and suggest that MGF may act as a potential therapeutic agent against obesity.
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Affiliation(s)
- Hsin-Lin Cheng
- Department of Nutrition, Chung Shan Medical University, Taichung 40201, Taiwan; (H.-L.C.); (J.-L.L.); (C.-T.T.); (S.-C.H.); (Y.-C.W.)
| | - Wei-Tang Chang
- Department of Nutrition and Health Sciences, Chinese Culture University, Taipei 11114, Taiwan;
| | - Jiun-Ling Lin
- Department of Nutrition, Chung Shan Medical University, Taichung 40201, Taiwan; (H.-L.C.); (J.-L.L.); (C.-T.T.); (S.-C.H.); (Y.-C.W.)
- Department of Nutrition, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
| | - Chun-Tse Tsai
- Department of Nutrition, Chung Shan Medical University, Taichung 40201, Taiwan; (H.-L.C.); (J.-L.L.); (C.-T.T.); (S.-C.H.); (Y.-C.W.)
| | - Ming-Ching Cheng
- Department of Health Food, Chung Chou University of Science and Technology, Changhua 51591, Taiwan;
| | - Shih-Chien Huang
- Department of Nutrition, Chung Shan Medical University, Taichung 40201, Taiwan; (H.-L.C.); (J.-L.L.); (C.-T.T.); (S.-C.H.); (Y.-C.W.)
| | - Yue-Ching Wong
- Department of Nutrition, Chung Shan Medical University, Taichung 40201, Taiwan; (H.-L.C.); (J.-L.L.); (C.-T.T.); (S.-C.H.); (Y.-C.W.)
| | - Chin-Lin Hsu
- Department of Nutrition, Chung Shan Medical University, Taichung 40201, Taiwan; (H.-L.C.); (J.-L.L.); (C.-T.T.); (S.-C.H.); (Y.-C.W.)
- Department of Nutrition, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
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5
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Deshpande SSS, Bera P, Khambata K, Balasinor NH. Paternal obesity induces epigenetic aberrations and gene expression changes in placenta and fetus. Mol Reprod Dev 2023; 90:109-126. [PMID: 36541371 DOI: 10.1002/mrd.23660] [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: 10/28/2021] [Revised: 09/15/2022] [Accepted: 11/26/2022] [Indexed: 12/24/2022]
Abstract
Paternal epigenome regulates placental and fetal growth. However, the effect of paternal obesity on placenta and its subsequent effect on the fetus via sperm remains unknown. We previously discovered abnormal methylation of imprinted genes involved in placental and fetal development in the spermatozoa of obese rats. In the present study, elaborate epigenetic characterization of sperm, placenta, and fetus was performed. For 16 weeks, male rats were fed either control or a high-fat diet. Following mating studies, sperm, placenta, and fetal tissue were collected. Significant changes were observed in placental weights, morphology, and cell populations. Methylation status of imprinted genes-Igf2, Peg3, Cdkn1c, and Gnas in spermatozoa, correlated with their expression in the placenta and fetus. Placental DNA methylating enzymes and 5-methylCytosine levels increased. Furthermore, in spermatozoa, DNA methylation of a few genes involved in pathways associated with placental endocrine function-gonadotropin-releasing hormone, prolactin, estrogen, and vascular endothelial growth factor, correlated with their expression in placenta and fetus. Changes in histone-modifying enzymes were also observed in the placenta. Histone marks H3K4me3, H3K9me3, and H4ac were downregulated, while H3K27me3 and H3ac were upregulated in placentas derived from obese male rats. This study shows that obesity-related changes in sperm methylome translate into abnormal expression in the F1-placenta fathered by the obese male, presumably affecting placental and fetal development.
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Affiliation(s)
- Sharvari S S Deshpande
- Neuroendocrinology Department, ICMR-National Institute for Research in Reproductive and Child Health, Mumbai, India.,Integrative Physiology and Metabolism Section, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Priyanka Bera
- Gamete Immunobiology Department, ICMR-National Institute for Research in Reproductive and Child Health, Mumbai, India
| | - Kushaan Khambata
- Gamete Immunobiology Department, ICMR-National Institute for Research in Reproductive and Child Health, Mumbai, India
| | - Nafisa H Balasinor
- Neuroendocrinology Department, ICMR-National Institute for Research in Reproductive and Child Health, Mumbai, India
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6
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Ayad B, Omolaoye TS, Louw N, Ramsunder Y, Skosana BT, Oyeipo PI, Du Plessis SS. Oxidative Stress and Male Infertility: Evidence From a Research Perspective. FRONTIERS IN REPRODUCTIVE HEALTH 2022; 4:822257. [PMID: 36303652 PMCID: PMC9580735 DOI: 10.3389/frph.2022.822257] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/17/2022] [Indexed: 11/30/2022] Open
Abstract
Male fertility potential can be influenced by a variety of conditions that frequently coincide. Spermatozoa are particularly susceptible to oxidative damage due to their limited antioxidant capacity and cell membrane rich in polyunsaturated fatty acids (PUFAs). The role of oxidative stress (OS) in the etiology of male infertility has been the primary focus of our Stellenbosch University Reproductive Research Group (SURRG) over the last 10 years. This review aims to provide a novel insight into the impact of OS on spermatozoa and male reproductive function by reviewing the OS-related findings from a wide variety of studies conducted in our laboratory, along with those emerging from other investigators. We will provide a concise overview of the production of reactive oxygen species (ROS) and the development of OS in the male reproductive tract along with the physiological and pathological effects thereof on male reproductive functions. Recent advances in methods and techniques used for the assessment of OS will also be highlighted. We will furthermore consider the current evidence regarding the association between OS and ejaculatory abstinence period, as well as the potential mechanisms involved in the pathophysiology of various systemic diseases such as obesity, insulin resistance, hypertension, and certain mental health disorders which have been shown to cause OS induced male infertility. Finally, special emphasis will be placed on the potential for transferring and incorporating research findings emanating from different experimental studies into clinical practice.
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Affiliation(s)
- Bashir Ayad
- Department of Physiology, Faculty of Medicine, Misurata University, Misrata, Libya
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Temidayo S. Omolaoye
- Department of Basic Medical Sciences, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Nicola Louw
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Yashthi Ramsunder
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Bongekile T. Skosana
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Peter I. Oyeipo
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
- Department of Physiology, College of Health Sciences, Osun State University, Osogbo, Nigeria
| | - Stefan S. Du Plessis
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
- Department of Basic Medical Sciences, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
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7
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Zhang T, Sun P, Geng Q, Fan H, Gong Y, Hu Y, Shan L, Sun Y, Shen W, Zhou Y. Disrupted spermatogenesis in a metabolic syndrome model: the role of vitamin A metabolism in the gut-testis axis. Gut 2022; 71:78-87. [PMID: 33504491 PMCID: PMC8666830 DOI: 10.1136/gutjnl-2020-323347] [Citation(s) in RCA: 84] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Effects of the diet-induced gut microbiota dysbiosis reach far beyond the gut. We aim to uncover the direct evidence involving the gut-testis axis in the aetiology of impaired spermatogenesis. DESIGN An excessive-energy diet-induced metabolic syndrome (MetS) sheep model was established. The testicular samples, host metabolomes and gut microbiome were analysed. Faecal microbiota transplantation (FMT) confirmed the linkage between gut microbiota and spermatogenesis. RESULTS We demonstrated that the number of arrested spermatogonia was markedly elevated by using 10× single-cell RNA-seq in the MetS model. Furthermore, through using metabolomics profiling and 16S rDNA-seq, we discovered that the absorption of vitamin A in the gut was abolished due to a notable reduction of bile acid levels, which was significantly associated with reduced abundance of Ruminococcaceae_NK4A214_group. Notably, the abnormal metabolic effects of vitamin A were transferable to the testicular cells through the circulating blood, which contributed to abnormal spermatogenesis, as confirmed by FMT. CONCLUSION These findings define a starting point for linking the testicular function and regulation of gut microbiota via host metabolomes and will be of potential value for the treatment of male infertility in MetS.
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Affiliation(s)
- Teng Zhang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Peng Sun
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Qi Geng
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Haitao Fan
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yutian Gong
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yanting Hu
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Liying Shan
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yuanchao Sun
- The Affiliated Hospital of Qingdao University and The Biomedical Sciences Institute of Qingdao University, Qingdao University, Qingdao, China
| | - Wei Shen
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Yang Zhou
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, College of Life Sciences, Inner Mongolia University, Hohhot, China
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Wu R, Chen Y, Liu Y, Zhuang L, Chen W, Zeng B, Liao X, Guo G, Wang Y, Wang X. m6A methylation promotes white-to-beige fat transition by facilitating Hif1a translation. EMBO Rep 2021; 22:e52348. [PMID: 34569703 DOI: 10.15252/embr.202052348] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 08/02/2021] [Accepted: 09/02/2021] [Indexed: 12/12/2022] Open
Abstract
Obesity mainly results from a chronic energy imbalance. Promoting browning of white adipocytes is a promising strategy to enhance energy expenditure and combat obesity. N6-methyladenosine (m6A), the most abundant mRNA modification in eukaryotes, plays an important role in regulating adipogenesis. However, whether m6A regulates white adipocyte browning was unknown. Here, we report that adipose tissue-specific deletion of Fto, an m6A demethylase, predisposes mice to prevent high-fat diet (HFD)-induced obesity by enhancing energy expenditure. Additionally, deletion of FTO in vitro promotes thermogenesis and white-to-beige adipocyte transition. Mechanistically, FTO deficiency increases the m6A level of Hif1a mRNA, which is recognized by m6A-binding protein YTHDC2, facilitating mRNA translation and increasing HIF1A protein abundance. HIF1A activates the transcription of thermogenic genes, including Ppaggc1a, Prdm16, and Pparg, thereby promoting Ucp1 expression and the browning process. Collectively, these results unveil an epigenetic mechanism by which m6A-facilitated HIF1A expression controls browning of white adipocytes and thermogenesis, providing a potential target to counteract obesity and metabolic disease.
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Affiliation(s)
- Ruifan Wu
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China.,Guangdong Laboratory of Lingnan Modern Agriculture, Guangdong Province Key Laboratory of Animal Nutritional Regulation and National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Yushi Chen
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Youhua Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Lenan Zhuang
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Wei Chen
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Botao Zeng
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Xing Liao
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Guanqun Guo
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Yizhen Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
| | - Xinxia Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Molecular Animal Nutrition (Zhejiang University), Ministry of Education, Key Laboratory of Animal Nutrition and Feed Science (Eastern of China), Ministry of Agriculture and Rural Affairs, Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Hangzhou, China
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9
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Deshpande SSS, Nemani H, Balasinor NH. High fat diet-induced- and genetically inherited- obesity differential alters DNA demethylation pathways in the germline of adult male rats. Reprod Biol 2021; 21:100532. [PMID: 34246869 DOI: 10.1016/j.repbio.2021.100532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/11/2021] [Accepted: 06/29/2021] [Indexed: 11/17/2022]
Abstract
Obesity is a multifactorial condition with predominantly genetic and environmental causes and is an emerging risk factor for male infertility/subfertility. Epigenetic mechanisms are vulnerable to genetic and environmental changes. Our earlier studies have shown differential effects of genetically inherited (GIO) - and diet-induced- obesity (DIO) on DNA methylation in male germline. Contrary to DNA methylation is DNA demethylation, which also regulates the gene expression by activating transcription. The present study aimed to delineate the effects of obesity on the DNA demethylation pathway using two rat models: GIO (WNIN/Ob) and DIO (high-fat diet). We observed differential alterations in enzymes involved in DNA demethylation by oxidation (Tet1-3) pathway in testis in both groups. An increase in Tets in DIO group and a decrease in GIO group were noted. Analysis of oxidation pathway intermediates (5-hmC, 5-fC, and 5-caC) did not show any effect on testis in DIO group but an increase in 5-hmC and decrease in 5-caC levels in GIO group was observed. Analysis of transcript levels of enzymes related to deamination pathway in testis showed an increase (Gadd45a, Aicda, and Tdg) in DIO group and a decrease (Gadd45a, Aicda, and Tdg) in GIO group. Also, 5-hmC levels were differentially altered in the spermatozoa of both groups without any changes in Tet enzyme levels. These findings highlight differences in effects of GIO and DIO on DNA demethylation mechanisms in male germline, which could be due to differences in endocrine and metabolic profile as well as white fat distribution observed earlier in two groups.
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Affiliation(s)
- Sharvari S S Deshpande
- Department of Neuroendocrinology, ICMR-National Institute for Research in Reproductive Health, Jehangir Merwanji Street, Parel, Mumbai, 400012, India
| | - Harishankar Nemani
- National Institute of Nutrition Animal Facility, ICMR-National Institute of Nutrition, Jamai-Osmania PO, Hyderabad, 500 007, India
| | - Nafisa H Balasinor
- Department of Neuroendocrinology, ICMR-National Institute for Research in Reproductive Health, Jehangir Merwanji Street, Parel, Mumbai, 400012, India.
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10
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Gum Arabic modifies anti-inflammatory cytokine in mice fed with high fat diet induced obesity. ACTA ACUST UNITED AC 2021. [DOI: 10.1016/j.bcdf.2020.100258] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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11
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Deshpande SS, Nemani H, Arumugam G, Ravichandran A, Balasinor NH. High-fat diet-induced and genetically inherited obesity differentially alters DNA methylation profile in the germline of adult male rats. Clin Epigenetics 2020; 12:179. [PMID: 33213487 PMCID: PMC7678167 DOI: 10.1186/s13148-020-00974-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 11/10/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Paternal obesity has been associated with reduced live birth rates. It could lead to inheritance of metabolic disturbances to the offspring through epigenetic mechanisms. However, obesity is a multifactorial disorder with genetic or environmental causes. Earlier we had demonstrated differential effects of high-fat diet-induced obesity (DIO) and genetically inherited obesity (GIO) on metabolic, hormonal profile, male fertility, and spermatogenesis using two rat models. The present study aimed to understand the effect of DIO and GIO on DNA methylation in male germline, and its subsequent effects on the resorbed (post-implantation embryo loss) and normal embryos. First, we assessed the DNA methylation enzymatic machinery in the testis by Real-Time PCR, followed global DNA methylation levels in spermatozoa and testicular cells by ELISA and flow cytometry, respectively. Further, we performed Methylation Sequencing in spermatozoa for both the groups. Sequencing data in spermatozoa from both the groups were validated using Pyrosequencing. Expression of the differentially methylated genes was assessed in the resorbed and normal embryos sired by the DIO group using Real-Time PCR for functional validation. RESULTS We noted a significant decrease in Dnmt transcript and global DNA methylation levels in the DIO group and an increase in the GIO group. Sequencing analysis showed 16,966 and 9113 differentially methylated regions in the spermatozoa of the DIO and GIO groups, respectively. Upon pathway analysis, we observed genes enriched in pathways involved in embryo growth and development namely Wnt, Hedgehog, TGF-beta, and Notch in spermatozoa for both the groups, the methylation status of which partially correlated with the gene expression pattern in resorbed and normal embryos sired by the DIO group. CONCLUSION Our study reports the mechanism by which diet-induced and genetically inherited obesity causes differential effects on the DNA methylation in the male germline that could be due to a difference in the white adipose tissue accumulation. These differences could either lead to embryo loss or transmit obesity-related traits to the offspring in adult life.
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Affiliation(s)
- Sharvari S. Deshpande
- Department of Neuroendocrinology, ICMR-National Institute for Research in Reproductive Health, Jehangir Merwanji Street, Parel, Mumbai 400012 India
| | - Harishankar Nemani
- National Institute of Nutrition Animal Facility, ICMR-National Institute of Nutrition, Jamai-Osmania PO, Hyderabad 500 007 India
| | - Gandhimathi Arumugam
- Genome Informatics Department, Genotypic Technologies Pvt. Ltd., #2/13, Balaji Complex, Poojari Layout, 80 Feet Road, R.M.V. 2nd stage, Bengaluru, India
| | - Avinash Ravichandran
- Genome Informatics Department, Genotypic Technologies Pvt. Ltd., #2/13, Balaji Complex, Poojari Layout, 80 Feet Road, R.M.V. 2nd stage, Bengaluru, India
| | - Nafisa H. Balasinor
- Department of Neuroendocrinology, ICMR-National Institute for Research in Reproductive Health, Jehangir Merwanji Street, Parel, Mumbai 400012 India
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12
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Cao Q, Liu L, Hu Y, Jiang N, Wang Y, Chen J, Zhou Q, Guo R. Irradiation of carotid baroreceptor with low-intensity pulsed ultrasound exerts different metabolic protection in perirenal, epididymal white adipose tissue and interscapular brown adipose tissue of obese rats. FASEB J 2020; 34:15431-15447. [PMID: 32954572 DOI: 10.1096/fj.202001550r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/30/2020] [Accepted: 09/09/2020] [Indexed: 12/13/2022]
Abstract
This study was designed to clarify whether the irradiation of carotid baroreceptor (CB) with low-intensity pulsed ultrasound (LIPUS) protects against obesity by rebalancing the autonomic nervous system (ANS). Obesity was induced using a high-fat diet (HFD) for 8 weeks in Sprague-Dawley rats. Irradiation with LIPUS was daily (20 minutes a day) applied to the right CB. In our study, LIPUS significantly ameliorated metabolic disorders in obese rats. LIPUS partly restored norepinephrine (NE) and acetylcholine (ACH) levels in the perirenal white adipose tissue (PWAT), epididymal white adipose tissue (EWAT), interscapular brown adipose tissue (IBAT), and plasma of obese rats. LIPUS partially rectified the dysregulated AMP-activated protein kinase (AMPK)/peroxisome proliferator-activated receptor (PPAR) α/ɣ pathway in the PWAT, EWAT, and IBAT of obese rats. PPARγ and PPARγ target genes respond more sensitively to HFD and LIPUS in PWAT and EWAT than in IBAT. NE, ACH, uncoupling protein-1, phosphorylated AMPK, PPARα, and PPARα target genes respond more sensitively to HFD and LIPUS in IBAT than in PWAT and EWAT. Conclusion: LIPUS irradiation of CB exerts different metabolic protection in PWAT, EWAT, and IBAT by rebalancing the ANS and rectifying the AMPK/PPARα/ɣ pathway in obese rats.
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Affiliation(s)
- Quan Cao
- Echo lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China.,3D-Printing & AI Lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lian Liu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yugang Hu
- Echo lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China.,3D-Printing & AI Lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China
| | - Nan Jiang
- Echo lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China.,3D-Printing & AI Lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yijia Wang
- Echo lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China.,3D-Printing & AI Lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jinling Chen
- Echo lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China.,3D-Printing & AI Lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qing Zhou
- Echo lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China.,3D-Printing & AI Lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ruiqiang Guo
- Echo lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China.,3D-Printing & AI Lab, Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, China
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Ding N, Zhang X, Zhang XD, Jing J, Liu SS, Mu YP, Peng LL, Yan YJ, Xiao GM, Bi XY, Chen H, Li FH, Yao B, Zhao AZ. Impairment of spermatogenesis and sperm motility by the high-fat diet-induced dysbiosis of gut microbes. Gut 2020; 69:1608-1619. [PMID: 31900292 PMCID: PMC7456731 DOI: 10.1136/gutjnl-2019-319127] [Citation(s) in RCA: 135] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE High-fat diet (HFD)-induced metabolic disorders can lead to impaired sperm production. We aim to investigate if HFD-induced gut microbiota dysbiosis can functionally influence spermatogenesis and sperm motility. DESIGN Faecal microbes derived from the HFD-fed or normal diet (ND)-fed male mice were transplanted to the mice maintained on ND. The gut microbes, sperm count and motility were analysed. Human faecal/semen/blood samples were collected to assess microbiota, sperm quality and endotoxin. RESULTS Transplantation of the HFD gut microbes into the ND-maintained (HFD-FMT) mice resulted in a significant decrease in spermatogenesis and sperm motility, whereas similar transplantation with the microbes from the ND-fed mice failed to do so. Analysis of the microbiota showed a profound increase in genus Bacteroides and Prevotella, both of which likely contributed to the metabolic endotoxaemia in the HFD-FMT mice. Interestingly, the gut microbes from clinical subjects revealed a strong negative correlation between the abundance of Bacteroides-Prevotella and sperm motility, and a positive correlation between blood endotoxin and Bacteroides abundance. Transplantation with HFD microbes also led to intestinal infiltration of T cells and macrophages as well as a significant increase of pro-inflammatory cytokines in the epididymis, suggesting that epididymal inflammation have likely contributed to the impairment of sperm motility. RNA-sequencing revealed significant reduction in the expression of those genes involved in gamete meiosis and testicular mitochondrial functions in the HFD-FMT mice. CONCLUSION We revealed an intimate linkage between HFD-induced microbiota dysbiosis and defect in spermatogenesis with elevated endotoxin, dysregulation of testicular gene expression and localised epididymal inflammation as the potential causes. TRIAL REGISTRATION NUMBER NCT03634644.
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Affiliation(s)
- Ning Ding
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | | | - Xue Di Zhang
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | - Jun Jing
- Jinling Hospital Department Reproductive Medical Center, Nanjing Medicine University, Nanjing, Jiangsu, China,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shan Shan Liu
- Department of Laboratory, Women and Children 's Hospital of Qingdao, Qingdao, Shandong, China
| | - Yun Ping Mu
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | - Li Li Peng
- The School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Yun Jing Yan
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | - Geng Miao Xiao
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | - Xin Yun Bi
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | - Hao Chen
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | - Fang Hong Li
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
| | - Bing Yao
- Jinling Hospital Department Reproductive Medical Center, Nanjing Medicine University, Nanjing, Jiangsu, China .,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Allan Z Zhao
- The School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, China
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14
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Yang FL, Wei YX, Liao BY, Wei GJ, Qin HM, Pang XX, Wang JL. Effects of Lycium barbarum Polysaccharide on Endoplasmic Reticulum Stress and Oxidative Stress in Obese Mice. Front Pharmacol 2020; 11:742. [PMID: 32528287 PMCID: PMC7264112 DOI: 10.3389/fphar.2020.00742] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/04/2020] [Indexed: 12/14/2022] Open
Abstract
Background The incidence of obesity-associated decline in male fertility has increased over the years. Lycium barbarum polysaccharide (LBP), a natural plant polysaccharide extracted from the Chinese herb L. barbarum has shown promising therapeutic effects in overcoming the same. Aim This study aimed to investigate the protective effect of LBP on the testes of obese mice. Methods Following administration of LBP to high-fat diet-induced obese mice for 35 days, serum, sperm, and testis samples were obtained for subsequent experiments. Biochemical analysis and sex hormone content determination were performed to observe changes in glycolipid metabolism and testosterone levels, respectively, in the blood. Hematoxylin and eosin staining were carried out to assess the pathological changes in the testicular tissue. Oxidative stress levels were detected using enzyme-linked immunosorbent assay and expression levels of endoplasmic reticulum stress markers were determined using western blot in the testicular tissue. Results Our results suggested that LBP reduced glucose levels and insulin resistance, increased testosterone levels and insulin sensitivity, and decreased testicular oxidative stress and pathological damage in obese mice. In addition, LBP down-regulated the expression of p-eIF2α, GRP78, and CHOP in the testicular tissues of obese mice. Conclusion Our results show that LBP is a potential novel drug for preventing male infertility caused by obesity.
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Affiliation(s)
- Feng-Lian Yang
- Youjiang Medical College for Nationalities, Baise, China
| | - Yu-Xia Wei
- Reproductive Center, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, China
| | - Bi-Yun Liao
- Reproductive Center, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, China
| | - Gui-Jiang Wei
- Reproductive Center, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, China
| | - Hai-Mei Qin
- Reproductive Center, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, China
| | - Xiao-Xia Pang
- Reproductive Center, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, China
| | - Jun-Li Wang
- Reproductive Center, Affiliated Hospital of Youjiang Medical College for Nationalities, Baise, China
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15
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Funes A, Saez Lancellotti TE, Santillan LD, Della Vedova MC, Monclus MA, Cabrillana ME, Gomez Mejiba SE, Ramirez DC, Fornes MW. A chronic high-fat diet causes sperm head alterations in C57BL/6J mice. Heliyon 2019; 5:e02868. [PMID: 31844747 PMCID: PMC6895587 DOI: 10.1016/j.heliyon.2019.e02868] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/14/2019] [Accepted: 11/12/2019] [Indexed: 12/15/2022] Open
Abstract
A chronic-positive energetic balance has been directly correlated with infertility in men, but the involved mechanisms remain unknown. Herein we investigated weather in a mouse model a chronic feeding with a diet supplemented with chicken fat affects sperm head morphology. To accomplish this, we fed mice for 16 weeks with either control food (low-fat diet, LFD) or control food supplemented with 22% chicken fat (high-fat diet, HFD). At the end of the feeding regimen, we measured: redox and inflammatory changes, cholesterol accumulation in testis and analyzed testicular morphological structure and ultra-structure and liver morphology. We found that the mice fed HFD resembled some features of the human metabolic syndrome, including systemic oxidative stress and inflammation, this group showed an increment in the following parameters; central adiposity (adiposity index: 1.07 ± 0.10 vs 2.26 ± 0.17), dyslipidemia (total cholesterol: 153.3 ± 2.6 vs 175.1 ± 8.08 mg/dL), insulin resistance (indirect Insulin resistance index, TG/HDL-c: 2.94 ± 0.33 vs 3.68 ± 0.15) and fatty liver. Increased cholesterol content measured by filipin was found in the testicles from HFD (fluorescence intensity increase to 50%), as well as an alteration of spermiogenesis. Most remarkably, a disorganized manchette-perinuclear ring complex and an altered morphology of the sperm head were observed in the spermatozoa of HFD-fed mice. These results add new information to our understanding about the mechanisms by which systemic oxidative stress and inflammation may influence sperm-head morphology and indirectly male fertility.
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Affiliation(s)
- A Funes
- LIAM, Andrology Research Laboratory from Mendoza, IHEM-CCT-CONICET, National University of Cuyo and University of Aconcagua, Mendoza, 5500, Argentina
| | - T E Saez Lancellotti
- LIAM, Andrology Research Laboratory from Mendoza, IHEM-CCT-CONICET, National University of Cuyo and University of Aconcagua, Mendoza, 5500, Argentina
| | - L D Santillan
- LETM, Laboratory of Experimental and Translational Medicine, IMIBIO-SL, CONICET, National University of San Luis, San Luis, 5700, Argentina
| | - M C Della Vedova
- LETM, Laboratory of Experimental and Translational Medicine, IMIBIO-SL, CONICET, National University of San Luis, San Luis, 5700, Argentina
| | - M A Monclus
- LIAM, Andrology Research Laboratory from Mendoza, IHEM-CCT-CONICET, National University of Cuyo and University of Aconcagua, Mendoza, 5500, Argentina
| | - M E Cabrillana
- LIAM, Andrology Research Laboratory from Mendoza, IHEM-CCT-CONICET, National University of Cuyo and University of Aconcagua, Mendoza, 5500, Argentina
| | - S E Gomez Mejiba
- LET, Laboratory of Experimental Therapeutics, IMIBIO-SL, CONICET, National University of San Luis, San Luis, 5700, Argentina
| | - D C Ramirez
- LETM, Laboratory of Experimental and Translational Medicine, IMIBIO-SL, CONICET, National University of San Luis, San Luis, 5700, Argentina
| | - M W Fornes
- LIAM, Andrology Research Laboratory from Mendoza, IHEM-CCT-CONICET, National University of Cuyo and University of Aconcagua, Mendoza, 5500, Argentina
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Dabeer S, Afjal MA, Ahmad S, Fatima M, Habib H, Parvez S, Raisuddin S. Transgenerational effect of parental obesity and chronic parental bisphenol A exposure on hormonal profile and reproductive organs of preadolescent Wistar rats of F1 generation: A one-generation study. Hum Exp Toxicol 2019; 39:59-76. [PMID: 31510804 DOI: 10.1177/0960327119873017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
There is a global concern about adverse health effects of endocrine-disrupting chemicals (EDCs). Bisphenol A (BPA), an estrogenic and obesogenic compound, used in the plastic and medical industry has a dominant position among EDCs as far as human health and regulatory scenario are concerned. Due to its omnipresence across the biosphere, population of all age groups and health status is unavoidably exposed to BPA. Transgenerational exposure to BPA and its effects have also been recognized. However, there is no report on the transgenerational effect of BPA on metabolically disordered parents, such as obese ones. We studied effect of BPA exposure in F0 generation and its impact on F1 generation and factored parental obesity in transgenerational effect of concurrent exposure to low dose BPA (10 ppm × 180 days) in Wistar rats in a one-generation study protocol. The exposed F0 generation animals were crossed and F1 generation was analyzed 35 days after birth for indications of reproductive toxicity. We observed changes in hormone levels and disturbance in glucose and lipid homeostasis. Animals showed increased serum cholesterol and triglycerides along with higher birth weight and rapid weight gain. Histopathological evidence confirmed the presence of regressive and inflammatory changes in the ovary and testis. The test group showed metabolic disturbances in comparison to control group. Our study showed the additive effect of parental obesity in transgenerational reproductive toxicity of BPA. Female animals of F1 generation of BPA-treated obese parents showed more insulin resistance than males with similar exposure scenario. Our study highlights the confounding role of metabolic disorders such as obesity in the transgenerational toxicity of BPA, which otherwise itself is implicated in the aetiology of such metabolic disorders, directly or indirectly.
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Affiliation(s)
- S Dabeer
- Department of Medical Elementology and Toxicology, Molecular Toxicology Laboratory, Jamia Hamdard (Hamdard University), New Delhi, India
| | - M A Afjal
- Department of Medical Elementology and Toxicology, Molecular Toxicology Laboratory, Jamia Hamdard (Hamdard University), New Delhi, India
| | - S Ahmad
- Department of Medical Elementology and Toxicology, Molecular Toxicology Laboratory, Jamia Hamdard (Hamdard University), New Delhi, India
| | - M Fatima
- Department of Medical Elementology and Toxicology, Molecular Toxicology Laboratory, Jamia Hamdard (Hamdard University), New Delhi, India
| | - H Habib
- Department of Medical Elementology and Toxicology, Molecular Toxicology Laboratory, Jamia Hamdard (Hamdard University), New Delhi, India
| | - S Parvez
- Department of Medical Elementology and Toxicology, Molecular Toxicology Laboratory, Jamia Hamdard (Hamdard University), New Delhi, India
| | - S Raisuddin
- Department of Medical Elementology and Toxicology, Molecular Toxicology Laboratory, Jamia Hamdard (Hamdard University), New Delhi, India
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Deshpande SS, Nemani H, Pothani S, Balasinor NH. Altered endocrine, cytokine signaling and oxidative stress: A plausible reason for differential changes in testicular cells in diet-induced and genetically-inherited - obesity in adult rats. Reprod Biol 2019; 19:303-308. [PMID: 31272928 DOI: 10.1016/j.repbio.2019.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/19/2019] [Accepted: 06/23/2019] [Indexed: 01/31/2023]
Abstract
Obesity is emerging as a potential risk factor for male infertility. It is a multifactorial disorder with primarily genetic and/or environmental factors. Our earlier studies have shown differential effects of genetically inherited-and high fat diet induced-obesity on hormones, fertility and spermatogenesis in adult male rats. In the present study, we assessed the effect of high fat diet induced - and genetically inherited - obesity on the underlying molecular mechanisms affecting spermatogenesis. The expression of hormone receptors, cytokines and markers of oxidative stress as well as cell cycle mediators were affected in both the obese groups, however, the changes were different in the two groups. This could be due to difference in fat distribution between the two types of obese groups. Altered expression of hormone receptors, cytokines, cell cycle mediators and differential effects on oxidative stress could be the plausible reason for differential changes in germ cell population in both the groups.
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Affiliation(s)
- Sharvari S Deshpande
- Department of Neuroendocrinology, National Institute for Research in Reproductive Health (ICMR), Jehangir Merwanji Street, Parel, Mumbai 400012, India
| | - Harishankar Nemani
- National Centre for Laboratory Animal Sciences (NCLAS), National Institute of Nutrition, Jamai-Osmania PO Hyderabad, 500 007, India
| | - Suresh Pothani
- National Centre for Laboratory Animal Sciences (NCLAS), National Institute of Nutrition, Jamai-Osmania PO Hyderabad, 500 007, India
| | - Nafisa H Balasinor
- Department of Neuroendocrinology, National Institute for Research in Reproductive Health (ICMR), Jehangir Merwanji Street, Parel, Mumbai 400012, India.
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