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Wang B, Paullada-Salmerón JA, Vergès-Castillo A, Muñoz-Cueto JA. Does the activation of sea bass GnIH receptor modulate GnRH receptor signaling? Comp Biochem Physiol A Mol Integr Physiol 2024; 296:111693. [PMID: 38969290 DOI: 10.1016/j.cbpa.2024.111693] [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: 05/10/2024] [Revised: 07/01/2024] [Accepted: 07/01/2024] [Indexed: 07/07/2024]
Abstract
Previous studies have revealed the stimulatory and inhibitory actions of gonadotropin-releasing hormone (GnRH) and gonadotropin-inhibitory hormone (GnIH) on the control of reproduction in European sea bass (Dicentrarchus labrax) and other vertebrates, respectively. However, information on the possible interactions between GnRH and GnIH on cell signaling is sparse in vertebrates. In the current study, we investigated if activation of sea bass GnIH receptor (GnIHR) can interfere with GnRH receptor II-1a (GnRHR-II-1a) involving the PKA pathway. Our results showed that GnIH and GnRH functioned via their cognate receptors, respectively. However, it appears that neither GnIH1 nor GnIH2 can block GnRH/GnRHR-II-1a-induced PKA signaling in sea bass. This is the first study to examine the potential interactions of GnIH with GnRH receptor signaling in teleosts. Further research seems necessary to shed light on unknown interactions in other signaling pathways and other GnIH/GnRH receptors involved in the physiological functions of these two relevant neuropeptides, not only in sea bass but also in other species.
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Affiliation(s)
- Bin Wang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao 266237, China; Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain
| | - José A Paullada-Salmerón
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain; Marine Research Institute (INMAR), Marine Campus of International Excellence (CEIMAR) and Agrifood Campus of International Excellence (ceiA3), Puerto Real, Cádiz, Spain; The European University of the Seas (SEA-EU), Cádiz, Spain
| | - Alba Vergès-Castillo
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain; Marine Research Institute (INMAR), Marine Campus of International Excellence (CEIMAR) and Agrifood Campus of International Excellence (ceiA3), Puerto Real, Cádiz, Spain; The European University of the Seas (SEA-EU), Cádiz, Spain
| | - José A Muñoz-Cueto
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real, Cádiz, Spain; Marine Research Institute (INMAR), Marine Campus of International Excellence (CEIMAR) and Agrifood Campus of International Excellence (ceiA3), Puerto Real, Cádiz, Spain; The European University of the Seas (SEA-EU), Cádiz, Spain.
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Song X, Xu W, Li Z, Zhang X, Liu C, Han K, Chen L, Shi Y, Xu C, Han D, Luo R, Cao Y, Li Q, Yang H, Lu Q, Qin J, Wang X, Hu C, Li X. Peripheral 5-HT Mediates Gonadotropin-Inhibitory Hormone-Induced Feeding Behavior and Energy Metabolism Disorder in Chickens via the 5-HT2C Receptor. Neuroendocrinology 2024:1-26. [PMID: 38718758 DOI: 10.1159/000539238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 04/11/2024] [Indexed: 06/21/2024]
Abstract
INTRODUCTION Since the discovery of gonadotropin-inhibitory hormone (GnIH), it has been found to play a critical role in reproduction in vertebrates. Recently, a regulatory role of GnIH in appetite and energy metabolism has emerged, although its precise physiological mechanisms remain unknown. METHODS Thus, the present study evaluated the effects of a single or long-term intraperitoneal GnIH treatment on the food intake, weight, and glucolipid metabolism of chickens, as well as investigating the possible neuroendocrinology factors and mechanisms involved in GnIH-induced obesity and glucolipid metabolism disorder. RESULTS Our results show that the intraperitoneal administration of GnIH to chickens resulted in a marked body mass increase, hyperlipidemia, hyperglycemia, and glucose intolerance. Subsequently, the results of metabolomics studies and the pharmacological inhibition of the 5-HT2C receptor revealed that blocking the 5-HT2C receptor reinforced the effects of GnIH on food intake, body weight, and blood glucose and lipid levels, resulting in even worse cases of GnIH-induced hyperglycemia, hyperlipidemia, and hepatic lipid deposition. This suggests that, via the 5-HT2C receptor, peripheral 5-HT may act as a negative feedback regulator to interplay with GnIH and jointly control energy balance homeostasis in chickens. DISCUSSION Our present study provides evidence of cross-talk between GnIH and 5-HT in food intake and energy metabolism at the in vivo pharmacological level, and it proposes a molecular basis for these interactions, suggesting that functional interactions between GnIH and 5-HT may open new avenues for understanding the mechanism of the neuroendocrine network involved in appetite and energy metabolism, as well as providing a new therapeutic strategy to prevent obesity, diabetes, and metabolic disorders.
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Affiliation(s)
- Xingxing Song
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Wenhao Xu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Zixin Li
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Xin Zhang
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Chengcheng Liu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Kaiou Han
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Lei Chen
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Yan Shi
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Changlin Xu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Dongyang Han
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Rongrong Luo
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Yajie Cao
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Qingwen Li
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Huihua Yang
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Qiucheng Lu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Jin Qin
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Xiaoye Wang
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Chuanhuo Hu
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
| | - Xun Li
- College of Animal Science and Technology, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning, China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, China
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Wang B, Paullada-Salmerón JA, Muñoz-Cueto JA. Gonadotropin-inhibitory hormone and its receptors in teleosts: Physiological roles and mechanisms of actions. Gen Comp Endocrinol 2024; 350:114477. [PMID: 38387532 DOI: 10.1016/j.ygcen.2024.114477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 02/24/2024]
Abstract
Gonadotropin-inhibitory hormone (GnIH) was the first reported hypothalamic neuropeptide inhibiting reproduction in vertebrates. Since its discovery in the quail brain, its orthologs have been identified in a variety of vertebrate species and even protochordates. Depending on the species, the GnIH precursor polypeptides comprise two, three or four mature peptides of the RFamide family. It has been well documented that GnIH inhibits reproduction at the brain-pituitary-gonadal levels and participates in metabolism, stress response, and social behaviors in birds and mammals. However, most studies in fish have mainly been focused on the physiological roles of GnIH in the control of reproduction and results obtained are in some cases conflicting, leaving aside its potential roles in the regulation of other functions. In this manuscript we summarize the information available in fish with respect to the structural diversity of GnIH peptides and functional roles of GnIH in reproduction and other physiological processes. We also highlight the molecular mechanisms of GnIH actions on target cells and possible interactions with other neuroendocrine factors.
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Affiliation(s)
- Bin Wang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China; Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real (Cádiz), Spain
| | - José A Paullada-Salmerón
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real (Cádiz), Spain; Marine Research Institute (INMAR), Marine Campus of International Excellence (CEIMAR) and Agrifood Campus of International Excellence (ceiA3), Puerto Real (Cádiz), Spain; The European University of the Seas (SEA-EU), Cádiz, Spain
| | - José A Muñoz-Cueto
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Puerto Real (Cádiz), Spain; Marine Research Institute (INMAR), Marine Campus of International Excellence (CEIMAR) and Agrifood Campus of International Excellence (ceiA3), Puerto Real (Cádiz), Spain; The European University of the Seas (SEA-EU), Cádiz, Spain.
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Guo X, Dai T, Wei S, Ma Z, Zhao H, Dan X. Rfamide-related peptide-3(RFRP-3) receptor gene is expressed in mouse ovarian granulosa cells: Potential role of RFRP-3 in steroidogenesis and apoptosis. Steroids 2024; 202:109349. [PMID: 38072091 DOI: 10.1016/j.steroids.2023.109349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 12/22/2023]
Abstract
RFRP-3 is a functional ortholog of avian GnIH and regulates reproductive activities in the gonads of animals. However, the role of RFRP-3 in the function of ovarian granulosa cells in mice remains unclear. First, we detected the expression of the RFRP-3 receptor (GPR147) in the ovarian granulosa cells of mice. Second, the effect of RFRP-3 treatment on estradiol and progesterone secretions from granulosa cells was tested by ELISA. Meanwhile, the expression of genes and proteins regulating steroid hormone synthesis was respectively examined by qPCR and western blot. Furthermore, the effect of RFRP-3 treatment on the apoptosis of granulosa cells was analyzed. The results revealed that the GPR147 protein (a RFRP-3 receptor) was expressed in the ovarian granulosa cells of mice. Low and medium doses RFRP-3 treatment significantly reduced progesterone secretion in the granulosa cells (P < 0.05), while RFRP-3 suppressed p450scc, 3β-HSD, StAR, and FSHR expression in a non-dose-dependent manner. Moreover, RFRP-3 treatment might induce the apoptosis of granulosa cells. Additionally, low doses RFRP-3 significantly reduced p-ERK1/2 protein expression (P < 0.05) in the ovarian granulosa cells. We here, for the first time, confirmed that GPR147 was expressed in the ovarian granulosa cells of mice. Our findings suggested that and RFRP-3 regulates the granulosa cell function through the ERK signaling pathway, which will lay the foundation for uncovering molecular mechanisms by which RFRP-3 regulates follicle development in future.
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Affiliation(s)
- Xingru Guo
- College of Animal Science and Technology, Ningxia University, Yinchuan, PR China
| | - Tianshu Dai
- College of Animal Science and Technology, Ningxia University, Yinchuan, PR China
| | - Shihao Wei
- College of Animal Science and Technology, Ningxia University, Yinchuan, PR China
| | - Ziming Ma
- College of Animal Science and Technology, Ningxia University, Yinchuan, PR China
| | - Hongxi Zhao
- College of Animal Science and Technology, Ningxia University, Yinchuan, PR China.
| | - Xingang Dan
- College of Animal Science and Technology, Ningxia University, Yinchuan, PR China; Ningxia Province's Key Laboratory of animal cell and molecular breeding, Yinchuan, PR China.
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Chen H, Mo CY, Zhong LY. Central precocious puberty secondary to peripheral precocious puberty due to a pineal germ cell tumor: a case and review of literature. BMC Endocr Disord 2023; 23:237. [PMID: 37884982 PMCID: PMC10601200 DOI: 10.1186/s12902-023-01494-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 10/18/2023] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND The pineal lesion affecting melatonin is a rare cause of central precocious puberty by decreasing the inhibition of hypothalamic-pituitary-gonadal axis. Germ cell tumor secreting human chorionic gonadotropin is a rare cause of peripheral puberty. CASE PRESENTATION A 5.8-year-old male presented facial hair and phallic growth, deepened voice, and accelerated growth velocity for 6 months. The elevated human chorionic gonadotropin level with undetectable gonadotropin levels indicated peripheral precocious puberty. Brain imaging revealed a pineal mass and further pathology indicated the diagnosis of teratoma. During chemoradiotherapy with operation, the elevated human chorionic gonadotropin level reduced to normal range, while the levels of gonadotropins and testosterone increased. Subsequently, progressing precocious puberty was arrested with gonadotrophin-releasing hormone analog therapy. Previous cases of transition from peripheral precocious puberty to central precocious puberty were reviewed. The transitions were caused by the suddenly reduced feedback inhibition of sex steroid hormones on gonadotropin releasing hormone and gonadotropins. CONCLUSIONS For patients with human chorionic gonadotropin-secreting tumors, gonadotropin levels increase prior to sex steroid decrease, seems a sign of melatonin-related central PP related to melatonin.
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Affiliation(s)
- Han Chen
- Department of Endocrinology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
| | - Cai-Yan Mo
- Department of Endocrinology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
| | - Li-Yong Zhong
- Department of Endocrinology, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
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Wang B, He S, Muñoz-Cueto JA. Editorial: Neuroendocrine regulation of feeding and reproduction in fish. Front Endocrinol (Lausanne) 2023; 14:1160378. [PMID: 36875484 PMCID: PMC9983636 DOI: 10.3389/fendo.2023.1160378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/19/2023] Open
Affiliation(s)
- Bin Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Shan He
- College of Fisheries, Huazhong Agricultural University, Wuhan, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, China
| | - José A. Muñoz-Cueto
- Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, Cádiz, Spain
- Marine Research Institute (INMAR), Marine Campus of International Excellence (CEIMAR) and Agrifood Campus of International Excellence (ceiA3), Cádiz, Spain
- The European University of the Seas (SEA-EU), Cádiz, Spain
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Wang B, Cui A, Xu Y, Zhang Y, Jiang Y, Liu X. Food deprivation differentially modulates gene expression of LPXRFa and kisspeptin systems in the brain-pituitary axis of half-smooth tongue sole ( Cynoglossus semilaevis). Front Endocrinol (Lausanne) 2023; 14:1099832. [PMID: 37033260 PMCID: PMC10081681 DOI: 10.3389/fendo.2023.1099832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/15/2023] [Indexed: 04/11/2023] Open
Abstract
LPXRFa, also known as gonadotropin-inhibitory hormone (GnIH), and kisspeptin (Kiss) are two major hypothalamic peptides that modulate the reproductive axis of vertebrates, including teleosts. However, little information is available regarding the actions of nutritional status on the regulation of these two neuroendocrine systems in fish. Herein, we assessed the effects of starvation and refeeding on the expression of lpxrfa, kiss2 and their receptors (lpxrfa-r and kiss2r respectively) at the brain-pituitary level of half-smooth tongue sole (Cynoglossus semilaevis). Food deprivation for 4 weeks induced a rise in brain lpxrfa as well as brain and pituitary lpxrfa-r mRNA levels, and refeeding restored brain lpxrfa and lpxrfa-r expression back to normal. However, pituitary lpxrfa-r mRNA levels still remained high after 1 week of refeeding. Neither lpxrfa nor kiss2 transcripts in the pituitary were altered by fasting, but their mRNA levels increased significantly after 1 week of refeeding, and declined back to the control levels after 2 weeks of refeeding. None of brain kiss2 and kiss2r along with pituitary kiss2r transcripts were modified by the nutritional status. In summary, our results revealed an interaction between energy status and the elements of LPXRFa and Kiss systems in the brain-pituitary axis of half-smooth tongue sole. Food deprivation and refeeding differentially regulated the two systems, which provided additional evidence for the involvement of the LPXRFa and Kiss systems in the regulation of reproduction by energy balance in non-mammalian species.
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Affiliation(s)
- Bin Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Joint Laboratory for Deep Blue Fishery Engineering, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Aijun Cui
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Joint Laboratory for Deep Blue Fishery Engineering, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Yongjiang Xu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Joint Laboratory for Deep Blue Fishery Engineering, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
- *Correspondence: Yongjiang Xu,
| | - Yaxing Zhang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - Yan Jiang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Joint Laboratory for Deep Blue Fishery Engineering, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Xuezhou Liu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Joint Laboratory for Deep Blue Fishery Engineering, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
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Iwasa T, Noguchi H, Aoki H, Tamura K, Maeda T, Takeda A, Uchishiba M, Arakaki R, Minato S, Kamada S, Yamamoto S, Imaizumi J, Kagawa T, Yoshida A, Fukui R, Daizumoto K, Kon M, Shinohara N, Yoshida K, Yamamoto Y. Effects of undernutrition and low energy availability on reproductive functions and their underlying neuroendocrine mechanisms. Endocr J 2022; 69:1363-1372. [PMID: 36372440 DOI: 10.1507/endocrj.ej22-0426] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
It has been well established that undernutrition and low energy availability disturb female reproductive functions in humans and many animal species. These reproductive dysfunctions are mainly caused by alterations of some hypothalamic factors, and consequent reduction of gonadotrophin-releasing hormone (GnRH) secretion. Evidence from literature suggests that increased activity of orexigenic factors and decreased activity of anorexigenic/satiety-related factors in undernourished conditions attenuate GnRH secretion in an integrated manner. Likewise, the activity of kisspeptin neurons, which is a potent stimulator of GnRH, is also reduced in undernourished conditions. In addition, it has been suggested that gonadotrophin-inhibitory hormone, which has anti-GnRH and gonadotrophic effects, may be involved in reproductive dysfunctions under several kinds of stress conditions. It should be remembered that these alterations, i.e., promotion of feeding behavior and temporary suppression of reproductive functions, are induced to prioritize the survival of individual over that of species, and that improvements in metabolic and nutritional conditions should be considered with the highest priority.
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Affiliation(s)
- Takeshi Iwasa
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hiroki Noguchi
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Hidenori Aoki
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Kou Tamura
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Takaaki Maeda
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Asuka Takeda
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Maimi Uchishiba
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Ryosuke Arakaki
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Saki Minato
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Shuhei Kamada
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Shota Yamamoto
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo 060-0808, Japan
| | - Junki Imaizumi
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Tomohiro Kagawa
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Atsuko Yoshida
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Rijin Fukui
- Department of Obstetrics & Gynecology, Tokushima Municipal Hospital, Tokushima 770-0812, Japan
| | - Kei Daizumoto
- Department of Urology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Masafumi Kon
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo 060-0808, Japan
| | - Nobuo Shinohara
- Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo 060-0808, Japan
| | - Kanako Yoshida
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
| | - Yuri Yamamoto
- Department of Obstetrics and Gynecology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8503, Japan
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Luo R, Chen L, Song X, Zhang X, Xu W, Han D, Zuo J, Hu W, Shi Y, Cao Y, Ma R, Liu C, Xu C, Li Z, Li X. Possible Role of GnIH as a Novel Link between Hyperphagia-Induced Obesity-Related Metabolic Derangements and Hypogonadism in Male Mice. Int J Mol Sci 2022; 23:ijms23158066. [PMID: 35897643 PMCID: PMC9332143 DOI: 10.3390/ijms23158066] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/17/2022] [Accepted: 07/19/2022] [Indexed: 02/05/2023] Open
Abstract
Gonadotropin-inhibitory hormone (GnIH) is a reproductive inhibitor and an endogenous orexigenic neuropeptide that may be involved in energy homeostasis and reproduction. However, whether GnIH is a molecular signal link of metabolism and the reproductive system, and thus, regulates reproductive activity as a function of the energy state, is still unknown. In the present study, we investigated the involvement of GnIH in glycolipid metabolism and reproduction in vivo, and in the coupling between these two processes in the testis level. Our results showed that chronic intraperitoneal injection of GnIH into male mice not only increased food intake and altered meal microstructure but also significantly elevated body mass due to the increased mass of liver and epididymal white adipose tissue (eWAT), despite the loss of testicular weight. Furthermore, chronic intraperitoneal administration of GnIH to male mice resulted in obesity-related glycolipid metabolic derangements, showing hyperlipidemia, hyperglycemia, glucose intolerance, and insulin resistance through changes in the expression of glucose and lipid metabolism-related genes in the pancreas and eWAT, respectively. Interestingly, the expression of GnIH and GPR147 was markedly increased in the testis of mice under conditions of energy imbalance, such as fasting, acute hypoglycemia, and hyperglycemia. In addition, chronic GnIH injection markedly inhibited glucose and lipid metabolism of mice testis while significantly decreasing testosterone synthesis and sperm quality, inducing hypogonadism. These observations indicated that orexigenic GnIH triggers hyperphagia-induced obesity-related metabolic derangements and hypogonadism in male mice, suggesting that GnIH is an emerging candidate for coupling metabolism and fertility by involvement in obesity and metabolic disorder-induced reproductive dysfunction of the testes.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Xun Li
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