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van Gastel J, Leysen H, Santos-Otte P, Hendrickx JO, Azmi A, Martin B, Maudsley S. The RXFP3 receptor is functionally associated with cellular responses to oxidative stress and DNA damage. Aging (Albany NY) 2019; 11:11268-11313. [PMID: 31794429 PMCID: PMC6932917 DOI: 10.18632/aging.102528] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 11/18/2019] [Indexed: 12/19/2022]
Abstract
DNA damage response (DDR) processes, often caused by oxidative stress, are important in aging and -related disorders. We recently showed that G protein-coupled receptor (GPCR) kinase interacting protein 2 (GIT2) plays a key role in both DNA damage and oxidative stress. Multiple tissue analyses in GIT2KO mice demonstrated that GIT2 expression affects the GPCR relaxin family peptide 3 receptor (RXFP3), and is thus a therapeutically-targetable system. RXFP3 and GIT2 play similar roles in metabolic aging processes. Gaining a detailed understanding of the RXFP3-GIT2 functional relationship could aid the development of novel anti-aging therapies. We determined the connection between RXFP3 and GIT2 by investigating the role of RXFP3 in oxidative stress and DDR. Analyzing the effects of oxidizing (H2O2) and DNA-damaging (camptothecin) stressors on the interacting partners of RXFP3 using Affinity Purification-Mass Spectrometry, we found multiple proteins linked to DDR and cell cycle control. RXFP3 expression increased in response to DNA damage, overexpression, and Relaxin 3-mediated stimulation of RXFP3 reduced phosphorylation of DNA damage marker H2AX, and repair protein BRCA1, moderating DNA damage. Our data suggests an RXFP3-GIT2 system that could regulate cellular degradation after DNA damage, and could be a novel mechanism for mitigating the rate of age-related damage accumulation.
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Affiliation(s)
- Jaana van Gastel
- Receptor Biology Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.,Translational Neurobiology Group, Centre for Molecular Neuroscience, VIB, Antwerp, Belgium
| | - Hanne Leysen
- Receptor Biology Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.,Translational Neurobiology Group, Centre for Molecular Neuroscience, VIB, Antwerp, Belgium
| | - Paula Santos-Otte
- Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Dresden, Germany
| | - Jhana O Hendrickx
- Receptor Biology Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.,Translational Neurobiology Group, Centre for Molecular Neuroscience, VIB, Antwerp, Belgium
| | - Abdelkrim Azmi
- Translational Neurobiology Group, Centre for Molecular Neuroscience, VIB, Antwerp, Belgium
| | - Bronwen Martin
- Faculty of Pharmaceutical, Veterinary and Biomedical Science, University of Antwerp, Antwerp, Belgium
| | - Stuart Maudsley
- Receptor Biology Lab, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.,Translational Neurobiology Group, Centre for Molecular Neuroscience, VIB, Antwerp, Belgium
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Meng L, Liu X, Teng X, Yuan W, Duan L, Meng J, Li J, Zheng Z, Wei Y, Hu S. DAN plays important compensatory roles in systemic-to-pulmonary shunt associated pulmonary arterial hypertension. Acta Physiol (Oxf) 2019; 226:e13263. [PMID: 30715799 DOI: 10.1111/apha.13263] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 01/27/2019] [Accepted: 01/30/2019] [Indexed: 12/11/2022]
Abstract
AIM Proteins mainly expressed in normal lungs and significantly changed in lungs exposed to systemic-to-pulmonary shunts might be promising targets for pulmonary arterial hypertension induced by congenital heart diseases (PAH/CHD). This study aimed to investigate the potential role of differential screening-selected gene aberrative in neuroblastoma (DAN) in PAH/CHD. METHODS PAH was surgically induced by the combined surgery (right pulmonary artery ligation and left cervical systemic-to-pulmonary shunt) in Sprague-Dawley (SD) rats. Exogenous DAN was supplemented by osmotic minipumps. RESULTS Firstly, DAN was significantly decreased in patients with severe PAH/CHD and negatively correlated with pulmonary hemodynamic indices derived from right cardiac catheterization. Secondly, pulmonary hypertensive status and apparent pulmonary vasculopathies of PAH/CHD were surgically reproduced in SD rats. Real time-PCR and Western blot analysis revealed that DAN mRNA and protein levels decreased in lungs exposed to systemic-to-pulmonary shunts, and immunofluorescence staining found that DAN was highly expressed in pulmonary arteries of normal lungs but seldom detected in severely remodelling pulmonary arteries, furthermore, plasma levels of DAN in shunted-rats manifested a time-depended decrease and negatively correlated with pulmonary hemodynamic indices. Thirdly, DAN specially reversed the anti-proliferative and pro-apoptotic effects of bone morphogenetic protein 2/4 (BMP2/4) on pulmonary arterial smooth muscle cells via BMP2/4-BMPR2-Smad1/5/8-Id1 signalling pathway. Furthermore, continuous supplementation of exogenous DAN protein increased the extent of shunt-associated PAH. CONCLUSION Compensatory decrease of DAN in hypertensive lungs may retard the deterioration of shunt-associated PAH, at least in part, by antagonizing BMP signalling pathway. Furthermore, DAN might be a potential biomarker for PAH/CHD.
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Affiliation(s)
- Liukun Meng
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College Chinese Academy of Medical Sciences Beijing China
| | - Xiaoyan Liu
- Medical Research Center, Beijing Chao‐Yang Hospital Capital Medical University Beijing China
- Heart Center & Beijing Key Laboratory of Hypertension Research, Beijing Chaoyang Hospital Capital Medical University Beijing China
| | - Xiao Teng
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College Chinese Academy of Medical Sciences Beijing China
| | - Wen Yuan
- Medical Research Center, Beijing Chao‐Yang Hospital Capital Medical University Beijing China
- Heart Center & Beijing Key Laboratory of Hypertension Research, Beijing Chaoyang Hospital Capital Medical University Beijing China
| | - Lihua Duan
- Department of Rheumatology and Clinical Immunology Jiangxi Provincial People's Hospital Nanchang China
| | - Jian Meng
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College Chinese Academy of Medical Sciences Beijing China
| | - Jun Li
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College Chinese Academy of Medical Sciences Beijing China
| | - Zhe Zheng
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College Chinese Academy of Medical Sciences Beijing China
| | - Yingjie Wei
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College Chinese Academy of Medical Sciences Beijing China
| | - Shengshou Hu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Disease, Peking Union Medical College Chinese Academy of Medical Sciences Beijing China
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Bechert U, Bartell J, Kutzler M, Menino A, Bildfell R, Anderson M, Fraker M. Effects of two porcine zona pellucida immunocontraceptive vaccines on ovarian activity in horses. J Wildl Manage 2013. [DOI: 10.1002/jwmg.600] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ursula Bechert
- College of Science; Oregon State University; Corvallis OR 97331 USA
| | - Jennifer Bartell
- Department of Animal and Rangeland Sciences; Oregon State University; Corvallis OR 97331 USA
| | - Michelle Kutzler
- Department of Animal and Rangeland Sciences; Oregon State University; Corvallis OR 97331 USA
| | - Alfred Menino
- Department of Animal and Rangeland Sciences; Oregon State University; Corvallis OR 97331 USA
| | - Robert Bildfell
- College of Veterinary Medicine; Oregon State University; Corvallis OR 97331 USA
| | - Makensie Anderson
- College of Veterinary Medicine; Oregon State University; Corvallis OR 97331 USA
| | - Mark Fraker
- TerraMar Environmental Research Ltd; Sidney BC V8L 1M8 Canada
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Takeda M, Otsuka F, Takahashi H, Inagaki K, Miyoshi T, Tsukamoto N, Makino H, Lawson MA. Interaction between gonadotropin-releasing hormone and bone morphogenetic protein-6 and -7 signaling in LβT2 gonadotrope cells. Mol Cell Endocrinol 2012; 348:147-54. [PMID: 21846488 PMCID: PMC3719407 DOI: 10.1016/j.mce.2011.08.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Revised: 07/30/2011] [Accepted: 08/02/2011] [Indexed: 10/17/2022]
Abstract
It is known that bone morphogenetic proteins (BMPs) regulate gonadotropin transcription and production by pituitary gonadotrope cells. However, the role of BMPs in gonadotropin-releasing hormone (GnRH)-induced FSH production remains uncertain. Here, we describe a functional link between BMP-6 and BMP-7 signals and FSH transcriptional activity induced by GnRH using mouse gonadotrope LβT2 cells. In LβT2 cells, BMP-6 and BMP-7 increased mouse FSHβ-promoter activity in a concentration-dependent manner. The induction by BMP-6 and BMP-7 was inhibited by treatment with extracellular domains of ActRII but not BMPRII. These findings suggest that the type II receptor ActRII participates in BMP-induced FSHβ transcription regulation. Notably, BMP-6, but not BMP-7, enhanced GnRH-induced FSHβ-promoter activity in LβT2 cells. Since GnRH stimulated MAPK phosphorylation in LβT2 cells, a functional link between MAPK and FSHβ transcription was examined. Inhibition of the ERK pathway, but not that of p38 or SAPK/JNK signaling, suppressed GnRH-induced FSHβ transcription, suggesting that ERK is functionally involved in GnRH-induced FSHβ transcription. Co-treatment with BMP-7, but not with BMP-6, suppressed GnRH-induced MAPK phosphorylation in LβT2 cells. Thus, the difference between BMP-6 and BMP-7 in enhancing GnRH-induced FSHβ transcription may be due to the differential effects of BMP ligands on GnRH-induced ERK signaling. On the other hand, GnRH reduced Smad1/5/8 phosphorylation but increased Smad6/7 expression. These findings imply the presence of a functional link between GnRH action, MAPK signaling and the BMP system in pituitary gonadotropes for fine-tuning of FSH gene expression.
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Affiliation(s)
- Masaya Takeda
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
- Department of Reproductive Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Fumio Otsuka
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
- Corresponding author. Tel.: +81 86 235 7235; fax: +81 86 222 5214. (F. Otsuka)
| | - Hiroaki Takahashi
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
| | - Kenichi Inagaki
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
| | - Tomoko Miyoshi
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
| | - Naoko Tsukamoto
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
| | - Hirofumi Makino
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
| | - Mark A. Lawson
- Department of Reproductive Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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Kirkpatrick JF, Lyda RO, Frank KM. Contraceptive Vaccines for Wildlife: A Review. Am J Reprod Immunol 2011; 66:40-50. [DOI: 10.1111/j.1600-0897.2011.01003.x] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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King SR, Stocco DM. Steroidogenic acute regulatory protein expression in the central nervous system. Front Endocrinol (Lausanne) 2011; 2:72. [PMID: 22649383 PMCID: PMC3355896 DOI: 10.3389/fendo.2011.00072] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 10/24/2011] [Indexed: 11/13/2022] Open
Abstract
Locally produced neurosteroids are proposed to have many functions in the central nervous system. The identification of the steroidogenic acute regulatory protein in steroid-producing neural cells provides a new tool to understand the sites, regulation, and importance of their synthesis.
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Affiliation(s)
- Steven R. King
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences CenterLubbock, TX, USA
| | - Douglas M. Stocco
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences CenterLubbock, TX, USA
- *Correspondence: Douglas M. Stocco, Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, 3601 4th Street, Lubbock, TX 79430, USA. e-mail:
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Wang L, Chadwick W, Park SS, Zhou Y, Silver N, Martin B, Maudsley S. Gonadotropin-releasing hormone receptor system: modulatory role in aging and neurodegeneration. CNS & NEUROLOGICAL DISORDERS DRUG TARGETS 2010; 9:651-60. [PMID: 20632963 PMCID: PMC2967575 DOI: 10.2174/187152710793361559] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2010] [Accepted: 02/25/2010] [Indexed: 12/15/2022]
Abstract
Receptors for hormones of the hypothalamic-pituitary-gonadal axis are expressed throughout the brain. Age-related decline in gonadal reproductive hormones cause imbalances of this axis and many hormones in this axis have been functionally linked to neurodegenerative pathophysiology. Gonadotropin-releasing hormone (GnRH) plays a vital role in both central and peripheral reproductive regulation. GnRH has historically been known as a pituitary hormone; however, in the past few years, interest has been raised in GnRH actions at non-pituitary peripheral targets. GnRH ligands and receptors are found throughout the brain where they may act to control multiple higher functions such as learning and memory function and feeding behavior. The actions of GnRH in mammals are mediated by the activation of a unique rhodopsin-like G protein-coupled receptor that does not possess a cytoplasmic carboxyl terminal sequence. Activation of this receptor appears to mediate a wide variety of signaling mechanisms that show diversity in different tissues. Epidemiological support for a role of GnRH in central functions is evidenced by a reduction in neurodegenerative disease after GnRH agonist therapy. It has previously been considered that these effects were not via direct GnRH action in the brain, however recent data has pointed to a direct central action of these ligands outside the pituitary. We have therefore summarized the evidence supporting a central direct role of GnRH ligands and receptors in controlling central nervous physiology and pathophysiology.
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Affiliation(s)
- Liyun Wang
- Receptor Pharmacology Unit, National Institute on Aging, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore MD 21224
| | - Wayne Chadwick
- Receptor Pharmacology Unit, National Institute on Aging, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore MD 21224
| | - Soo-Sung Park
- Receptor Pharmacology Unit, National Institute on Aging, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore MD 21224
| | - Yu Zhou
- Receptor Pharmacology Unit, National Institute on Aging, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore MD 21224
| | - Nathan Silver
- Receptor Pharmacology Unit, National Institute on Aging, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore MD 21224
| | - Bronwen Martin
- Metabolism Unit, Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore MD 21224
| | - Stuart Maudsley
- Receptor Pharmacology Unit, National Institute on Aging, National Institutes of Health, Biomedical Research Center, 251 Bayview Boulevard, Baltimore MD 21224
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NBL1 and anillin (ANLN) genes over-expression in pancreatic carcinoma. Folia Histochem Cytobiol 2009; 47:249-55. [DOI: 10.2478/v10042-009-0031-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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10
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Albertson AJ, Talbott H, Wang Q, Jensen D, Skinner DC. The gonadotropin-releasing hormone type I receptor is expressed in the mouse cerebellum. THE CEREBELLUM 2009; 7:379-84. [PMID: 18592335 DOI: 10.1007/s12311-008-0038-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Gonadotropin-releasing hormone (GnRH) is a decapeptide hypothalamic hormone that was named according to its first discovered function--at the head of the neuroendocrine reproductive axis. Numerous other organ systems express GnRH and/or its receptor, although a specific physiological role for GnRH outside of the reproductive axis has yet to be established. Several studies in lower vertebrates have reported GnRH and/or its receptor in the cerebellum. Here, we describe the presence of immunoreactive GnRH receptors in the Purkinje cells of the mammalian cerebellum for the first time. This study provides compelling anatomical evidence for a common link between the cerebellum and the hypothalamo-pituitary axis. Dysfunction of this link occurs in the rare genetic ataxia disorders--Gordon Holmes syndrome and Boucher-Neuhauser syndrome.
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Affiliation(s)
- Asher J Albertson
- Department of Zoology and Physiology & Neurobiology Program, University of Wyoming, Dept 3166, 1000 E University Avenue, Laramie, WY 82071, USA
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Skinner DC, Albertson AJ, Navratil A, Smith A, Mignot M, Talbott H, Scanlan-Blake N. Effects of gonadotrophin-releasing hormone outside the hypothalamic-pituitary-reproductive axis. J Neuroendocrinol 2009; 21:282-92. [PMID: 19187469 PMCID: PMC2669307 DOI: 10.1111/j.1365-2826.2009.01842.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Gonadotrophin-releasing hormone (GnRH) is a hypothalamic decapeptide with an undisputed role as a primary regulator of gonadal function. It exerts this regulation by controlling the release of gonadotrophins. However, it is becoming apparent that GnRH may have a variety of other vital roles in normal physiology. A reconsideration of the potential widespread action that this traditional reproductive hormone exerts may lead to the generation of novel therapies and provide insight into seemingly incongruent outcomes from current treatments using GnRH analogues to combat diseases such as prostate cancer.
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Affiliation(s)
- D C Skinner
- Neurobiology Program and Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82071, USA.
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Martin B, Golden E, Carlson OD, Egan JM, Mattson MP, Maudsley S. Caloric restriction: impact upon pituitary function and reproduction. Ageing Res Rev 2008; 7:209-24. [PMID: 18329344 DOI: 10.1016/j.arr.2008.01.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2007] [Revised: 01/25/2008] [Accepted: 01/28/2008] [Indexed: 01/05/2023]
Abstract
Reduced energy intake, or caloric restriction (CR), is known to extend life span and to retard age-related health decline in a number of different species, including worms, flies, fish, mice and rats. CR has been shown to reduce oxidative stress, improve insulin sensitivity, and alter neuroendocrine responses and central nervous system (CNS) function in animals. CR has particularly profound and complex actions upon reproductive health. At the reductionist level the most crucial physiological function of any organism is its capacity to reproduce. For a successful species to thrive, the balance between available energy (food) and the energy expenditure required for reproduction must be tightly linked. An ability to coordinate energy balance and fecundity involves complex interactions of hormones from both the periphery and the CNS and primarily centers upon the master endocrine gland, the anterior pituitary. In this review article we review the effects of CR on pituitary gonadotrope function and on the male and female reproductive axes. A better understanding of how dietary energy intake affects reproductive axis function and endocrine pulsatility could provide novel strategies for the prevention and management of reproductive dysfunction and its associated comorbidities.
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Affiliation(s)
- Bronwen Martin
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program, 5600 Nathan Shock Drive, Baltimore, MD 21224, USA.
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