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Paes-Leme B, Monteiro LDRN, Gholami K, Hoe SZ, Ferguson AV, Murphy D, Antunes-Rodrigues J, Rorato R, Reis LC, Mecawi AS. Fasting increases circulating angiotensin levels and brain Agtr1a expression in male rats. J Neuroendocrinol 2023; 35:e13334. [PMID: 37667574 DOI: 10.1111/jne.13334] [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: 10/25/2022] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 09/06/2023]
Abstract
In addition to being recognised for involvement in cardiovascular control and hydromineral balance, the renin-angiotensin system (RAS) has also been associated with the neuroendocrine control of energy balance. One of the main brain sites for angiotensin II (ANG II)/type 1 receptor (AT1 R) signalling is the subfornical organ (SFO), a circumventricular organ related to the control of autonomic functions, motivated behaviours and energy metabolism. Thus, we hypothesised that circulating ANG II may act on the SFO AT1 R receptors to integrate metabolic and hydromineral balance. We evaluated whether food deprivation can modulate systemic RAS activity and Agrt1a brain expression, and if ANG II/AT1 R signalling influences the hypothalamic expression of mRNAs encoding neuropeptides and food and water ingestion in fed and fasted Wistar rats. We found a significant increase in both ANG I and ANG II plasma levels after 24 and 48 h of fasting. Expression of Agrt1a mRNA in the SFO and paraventricular nucleus (PVN) also increased after food deprivation for 48 h. Treatment of fasted rats with low doses of losartan in drinking water attenuated the decrease in glycemia and meal-associated water intake without changing the expression in PVN or arcuate nucleus of mRNAs encoding selected neuropeptides related to energy homeostasis control. These findings point to a possible role of peripheral ANG II/SFO-AT1 R signalling in the control of refeeding-induced thirst. On the other hand, intracerebroventricular losartan treatment decreased food and water intake over dark time in fed but not in fasted rats.
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Affiliation(s)
- Bruno Paes-Leme
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - Lívia da Rocha Natalino Monteiro
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - Khadijeh Gholami
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - See Ziau Hoe
- Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Alastair Victor Ferguson
- Department of Biomedical and Molecular Sciences and Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada
| | - David Murphy
- Molecular Neuroendocrinology Research Group, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - José Antunes-Rodrigues
- Department of Physiology, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rodrigo Rorato
- Department of Biophysics, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Luis Carlos Reis
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil
| | - André Souza Mecawi
- Department of Biophysics, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil
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Song S, Yuan Y, Xu L, Jiang J, Li Y, Yan Y, Li Q, Zhou F, Cao J, Zhang L. Genetic Architecture and Functional Implications of the CSF-Contacting Nucleus. Neurosci Bull 2023; 39:1638-1654. [PMID: 37405574 PMCID: PMC10602992 DOI: 10.1007/s12264-023-01084-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 04/17/2023] [Indexed: 07/06/2023] Open
Abstract
We previously identified a unique nucleus, the cerebrospinal fluid (CSF)-contacting nucleus. This study aims to understand its gene architecture and preliminarily suggest its functions. The results showed that there were about 19,666 genes in this nucleus, of which 913 were distinct from the dorsal raphe nucleus (non-CSF contacting). The top 40 highly-expressed genes are mainly related to energy metabolism, protein synthesis, transport, secretion, and hydrolysis. The main neurotransmitter is 5-HT. The receptors of 5-HT and GABA are abundant. The channels for Cl-, Na+, K+, and Ca2+ are routinely expressed. The signaling molecules associated with the CaMK, JAK, and MAPK pathways were identified accurately. In particular, the channels of transient receptor potential associated with nociceptors and the solute carrier superfamily members associated with cell membrane transport were significantly expressed. The relationship between the main genes of the nucleus and life activities is preliminarily verified.
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Affiliation(s)
- Siyuan Song
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
| | - Yumin Yuan
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
| | - Lingling Xu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
| | - Jun Jiang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
| | - Ying Li
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
| | - Yao Yan
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
| | - Qing Li
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
- School of Nursing, Xuzhou Medical University, Xuzhou, 221004, China
| | - Fang Zhou
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
- School of Nursing, Xuzhou Medical University, Xuzhou, 221004, China
| | - Junli Cao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China
| | - Licai Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, 221004, China.
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, 221004, China.
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou, 221008, China.
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Development and validation of a high-performance liquid chromatography method for determination of lisinopril in human plasma by magnetic solid-phase extraction and pre-column derivatization. Biomed Chromatogr 2017; 32. [DOI: 10.1002/bmc.4120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 10/02/2017] [Accepted: 10/09/2017] [Indexed: 12/19/2022]
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Progesterone-induced amplification and advancement of GnRH/LH surges are associated with changes in kisspeptin system in preoptic area of estradiol-primed female rats. Brain Res 2016; 1650:21-30. [DOI: 10.1016/j.brainres.2016.08.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 08/15/2016] [Accepted: 08/16/2016] [Indexed: 11/20/2022]
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Kalil B, Ribeiro AB, Leite CM, Uchôa ET, Carolino RO, Cardoso TSR, Elias LLK, Rodrigues JA, Plant TM, Poletini MO, Anselmo-Franci JA. The Increase in Signaling by Kisspeptin Neurons in the Preoptic Area and Associated Changes in Clock Gene Expression That Trigger the LH Surge in Female Rats Are Dependent on the Facilitatory Action of a Noradrenaline Input. Endocrinology 2016; 157:323-35. [PMID: 26556532 DOI: 10.1210/en.2015-1323] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In rodents, kisspeptin neurons in the rostral periventricular area of the third ventricle (RP3V) of the preoptic area are considered to provide a major stimulatory input to the GnRH neuronal network that is responsible for triggering the preovulatory LH surge. Noradrenaline (NA) is one of the main modulators of GnRH release, and NA fibers are found in close apposition to kisspeptin neurons in the RP3V. Our objective was to interrogate the role of NA signaling in the kisspeptin control of GnRH secretion during the estradiol induced LH surge in ovariectomized rats, using prazosin, an α1-adrenergic receptor antagonist. In control rats, the estradiol-induced LH surge at 17 hours was associated with a significant increase in GnRH and kisspeptin content in the median eminence with the increase in kisspeptin preceding that of GnRH and LH. Prazosin, administered 5 and 3 hours prior to the predicted time of the LH surge truncated the LH surge and abolished the rise in GnRH and kisspeptin in the median eminence. In the preoptic area, prazosin blocked the increases in Kiss1 gene expression and kisspeptin content in association with a disruption in the expression of the clock genes, Per1 and Bmal1. Together these findings demonstrate for the first time that NA modulates kisspeptin synthesis in the RP3V through the activation of α1-adrenergic receptors prior to the initiation of the LH surge and indicate a potential role of α1-adrenergic signaling in the circadian-controlled pathway timing of the preovulatory LH surge.
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Affiliation(s)
- Bruna Kalil
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Aline B Ribeiro
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Cristiane M Leite
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Ernane T Uchôa
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Ruither O Carolino
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Thais S R Cardoso
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Lucila L K Elias
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - José A Rodrigues
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Tony M Plant
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Maristela O Poletini
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
| | - Janete A Anselmo-Franci
- Departamento de Fisiologia (B.K., A.B.R., E.T.U., L.L.K.E., J.A.R.), Faculdade de Medicina de Ribeirão Preto, and Departamento de Morfologia, Fisiologia, e Patologia Básica (C.M.L., R.O.C., J.A.A.-F.), Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, 14049-900 São Paulo, Brazil; Department of Obstetrics, Gynecology, and Reproductive Sciences (T.M.P.), University of Pittsburgh School of Medicine, and Magee-Womens Research Institute, Pittsburgh, Pennsylvania 15213; Departamento de Fisiologia e Biofísica (T.S.R.C., M.O.P.), Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil; and Departamento de Ciências Fisiológicas (E.T.U.), Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil
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Helena CV, Toporikova N, Kalil B, Stathopoulos AM, Pogrebna VV, Carolino RO, Anselmo-Franci JA, Bertram R. KNDy Neurons Modulate the Magnitude of the Steroid-Induced Luteinizing Hormone Surges in Ovariectomized Rats. Endocrinology 2015; 156:4200-13. [PMID: 26302111 PMCID: PMC4606747 DOI: 10.1210/en.2015-1070] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Kisspeptin is the most potent stimulator of LH release. There are two kisspeptin neuronal populations in the rodent brain: in the anteroventral periventricular nucleus (AVPV) and in the arcuate nucleus. The arcuate neurons coexpress kisspeptin, neurokinin B, and dynorphin and are called KNDy neurons. Because estradiol increases kisspeptin expression in the AVPV whereas it inhibits KNDy neurons, AVPV and KNDy neurons have been postulated to mediate the positive and negative feedback effects of estradiol on LH secretion, respectively. Yet the role of KNDy neurons during the positive feedback is not clear. In this study, ovariectomized rats were microinjected bilaterally into the arcuate nucleus with a saporin-conjugated neurokinin B receptor agonist for targeted ablation of approximately 70% of KNDy neurons. In oil-treated animals, ablation of KNDy neurons impaired the rise in LH after ovariectomy and kisspeptin content in both populations. In estradiol-treated animals, KNDy ablation did not influence the negative feedback of steroids during the morning. Surprisingly, KNDy ablation increased the steroid-induced LH surges, accompanied by an increase of kisspeptin content in the AVPV. This increase seems to be due to lack of dynorphin input from KNDy neurons to the AVPV as the following: 1) microinjections of a dynorphin antagonist into the AVPV significantly increased the LH surge in estradiol-treated rats, similar to KNDy ablation, and 2) intra-AVPV microinjections of dynorphin in KNDy-ablated rats restored LH surge levels. Our results suggest that KNDy neurons provide inhibition to AVPV kisspeptin neurons through dynorphin and thus regulate the amplitude of the steroid-induced LH surges.
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Affiliation(s)
- Cleyde V Helena
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
| | - Natalia Toporikova
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
| | - Bruna Kalil
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
| | - Andrea M Stathopoulos
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
| | - Veronika V Pogrebna
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
| | - Ruither O Carolino
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
| | - Janete A Anselmo-Franci
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
| | - Richard Bertram
- Program in Neuroscience and Department of Mathematics (C.V.H., R.B.) and Program in Neuroscience and Department of Biology (A.M.S.), Florida State University, Tallahassee, Florida 32306; Department of Biology (N.T., V.V.P.), Washington and Lee University, Lexington, Virginia 24450; and Department of Physiology (B.K.), Medical School, and Department of Morphology, Stomatology, and Physiology (R.O.C., J.A.A.-F.), School of Dentistry, University of São Paulo, Ribeirão Preto 14040-900, SP, Brazil
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Hu MH, Li XF, McCausland B, Li SY, Gresham R, Kinsey-Jones JS, Gardiner JV, Sam AH, Bloom SR, Poston L, Lightman SL, Murphy KG, O'Byrne KT. Relative Importance of the Arcuate and Anteroventral Periventricular Kisspeptin Neurons in Control of Puberty and Reproductive Function in Female Rats. Endocrinology 2015; 156:2619-31. [PMID: 25875299 PMCID: PMC4475719 DOI: 10.1210/en.2014-1655] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Kisspeptin plays a critical role in pubertal timing and reproductive function. In rodents, kisspeptin perikarya within the hypothalamic arcuate (ARC) and anteroventral periventricular (AVPV) nuclei are thought to be involved in LH pulse and surge generation, respectively. Using bilateral microinjections of recombinant adeno-associated virus encoding kisspeptin antisense into the ARC or AVPV of female rats at postnatal day 10, we investigated the relative importance of these two kisspeptin populations in the control of pubertal timing, estrous cyclicity, and LH surge and pulse generation. A 37% knockdown of kisspeptin in the AVPV resulted in a significant delay in vaginal opening and first vaginal estrous, abnormal estrous cyclicity, and reduction in the occurrence of spontaneous LH surges, although these retained normal amplitude. This AVPV knockdown had no effect on LH pulse frequency, measured after ovariectomy. A 32% reduction of kisspeptin in the ARC had no effect on the onset of puberty but resulted in abnormal estrous cyclicity and decreased LH pulse frequency. Additionally, the knockdown of kisspeptin in the ARC decreased the amplitude but not the incidence of LH surges. These results might suggest that the role of AVPV kisspeptin in the control of pubertal timing is particularly sensitive to perturbation. In accordance with our previous studies, ARC kisspeptin signaling was critical for normal pulsatile LH secretion in female rats. Despite the widely reported role of AVPV kisspeptin neurons in LH surge generation, this study suggests that both AVPV and ARC populations are essential for normal LH surges and estrous cyclicity.
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Affiliation(s)
- M H Hu
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - X F Li
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - B McCausland
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - S Y Li
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - R Gresham
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - J S Kinsey-Jones
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - J V Gardiner
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - A H Sam
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - S R Bloom
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - L Poston
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - S L Lightman
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - K G Murphy
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
| | - K T O'Byrne
- Division of Women's Health (M.H.H., X.F.L., B.M., S.Y.L., R.G., L.P., K.T.O.), Faculty of Life Sciences and Medicine, King's College London, Guy's Campus, London SE1 1UL, United Kingdom; Section of Investigative Medicine (J.S.K.-J., J.V.G., A.H.S., S.R.B., K.G.M.), Division of Diabetes, Endocrinology, and Metabolism, Imperial College London, London W12 0NN, United Kingdom; and Henry Wellcome Laboratory for Integrative Neuroscience and Endocrinology (S.L.L.), University of Bristol, Bristol BS13NY, United Kingdom
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Salehi S, Adeshina I, Chen H, Zirkin BR, Hussain MA, Wondisford F, Wolfe A, Radovick S. Developmental and endocrine regulation of kisspeptin expression in mouse Leydig cells. Endocrinology 2015; 156:1514-22. [PMID: 25635620 PMCID: PMC4399318 DOI: 10.1210/en.2014-1606] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Kisspeptin, encoded by the Kiss1 gene, binds to a specific G protein-coupled receptor (kisspeptin1 receptor) to regulate the central reproductive axis. Kisspeptin has also been reported to be expressed in peripheral tissues, including the testes. However, factors regulating testicular kisspeptin and its role in reproduction are unknown. Our objective herein was to begin to address kisspeptin function in the testis. In particular, we sought to determine the level of kisspeptin in the testis in comparison with the brain and other tissues, how these levels change from the prepubertal period through sexual maturation, and the factors involved in kisspeptin regulation in the testis. Immunohistochemical analysis of testis sections using a validated kisspeptin antibody localized kisspeptin to the Leydig cells. Kisspeptin was not detected in germ cells or Sertoli cells within the seminiferous tubules at any developmental time period studied, from prepuberty to sexual maturation. A developmental time course of testicular kisspeptin revealed that its mRNA and protein levels increased during development, reaching robust levels at postnatal day 28, correlating with pubertal onset. In vitro studies of primary mouse Leydig cells, as well as in vivo studies, indicated clearly that LH is involved in regulating levels of Leydig cell kisspeptin. Interestingly, gonadectomy resulted in elevated LH but reduced serum kisspeptin levels, suggesting that testicular kisspeptin may be secreted. These data document kisspeptin expression in mouse Leydig cells, its secretion into peripheral serum, and its regulation by changes in reproductive neuroendocrine function.
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Affiliation(s)
- Sajad Salehi
- Divisions of Endocrinology (S.S., I.A., A.W., S.R.) and Metabolism (B.A.H., F.W.), Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287; and Department of Biochemistry and Molecular Biology (H.C., B.R.Z.), Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
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Herreboudt AM, Kyle VRL, Lawrence J, Doran J, Colledge WH. Kiss1 mutant placentas show normal structure and function in the mouse. Placenta 2014; 36:52-8. [PMID: 25468546 PMCID: PMC4302219 DOI: 10.1016/j.placenta.2014.10.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 10/29/2014] [Accepted: 10/31/2014] [Indexed: 01/18/2023]
Abstract
Introduction Kisspeptins, encoded by the Kiss1 gene, are a set of related neuropeptides that are required for activation of the mammalian reproductive axis at puberty and to maintain fertility. In addition, kisspeptin signaling via the G-protein coupled receptor GPR54 (KISS1R) has been suggested to regulate human placental formation and correlations have been found between altered kisspeptin levels in the maternal blood and the development of pre-eclampsia. Methods We have used Kiss1 and Gpr54 mutant mice to investigate the role of kisspeptin signaling in the structure and function of the mouse placenta. Results Expression of Kiss1 and Gpr54 was confirmed in the mouse placenta but no differences in birth weight were found in mice that had been supported by a mutant placenta during fetal development. Stereological measurements found no differences between Kiss1 mutant and wild-type placentas. Measurement of amino-acid and glucose transport across the Kiss1 mutant placentas at E15.5 days did not reveal any functional defects. Discussion These data indicate that mouse placentas can develop a normal structure and function without kisspeptin signaling and can support normal fetal development and growth. The structure and function of Kiss1 and Gpr54 mutant placentas was examined in transgenic mice. Kiss1 and Gpr54 mutant placentas are not associated with fetal loss during gestation or reduced pup weight at birth. Kiss1 mutant placentas show normal structural components. Kiss1 mutant placentas show normal transport of glucose and amino-acids.
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Affiliation(s)
- A M Herreboudt
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, United Kingdom
| | - V R L Kyle
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, United Kingdom
| | - J Lawrence
- Takeda Cambridge, 418 Science Park, Milton Road, Cambridge CB4 0PZ, United Kingdom
| | - J Doran
- Takeda Cambridge, 418 Science Park, Milton Road, Cambridge CB4 0PZ, United Kingdom
| | - W H Colledge
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, United Kingdom.
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