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Dees WL, Hiney JK, Srivastava VK. How alcohol affects insulin-like growth factor-1's influences on the onset of puberty: A critical review. Alcohol Clin Exp Res 2021; 45:2196-2206. [PMID: 34523716 PMCID: PMC8642280 DOI: 10.1111/acer.14711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/01/2021] [Accepted: 09/07/2021] [Indexed: 11/30/2022]
Abstract
Alcohol (ALC) is capable of delaying signs associated with pubertal development in laboratory animals, as well as in humans. The normal onset of puberty results from a timely increase in gonadotropin‐releasing hormone (GnRH) secretion, which is associated with a gradual decline in prepubertal inhibitory influences, and the establishment of excitatory inputs that increase GnRH release, which together drive pubertal development. In recent years, insulin‐like growth factor‐1 (IGF‐1) has emerged as a pivotal contributor to prepubertal GnRH secretion and pubertal development, whose critical actions are interfered with by ALC abuse. Here we review the neuroendocrine research demonstrating the important role that IGF‐1 plays in pubertal development, and describe the detrimental effects and mechanisms of action of ALC on the onset and progression of pubertal maturation.
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Affiliation(s)
- William L Dees
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA
| | - Jill K Hiney
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA
| | - Vinod K Srivastava
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA
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Dees WL, Hiney JK, Srivastava VK. IGF-1 Influences Gonadotropin-Releasing Hormone Regulation of Puberty. Neuroendocrinology 2021; 111:1151-1163. [PMID: 33406521 PMCID: PMC8257778 DOI: 10.1159/000514217] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/08/2020] [Indexed: 11/19/2022]
Abstract
The pubertal process is initiated as a result of complex neuroendocrine interactions within the preoptic and hypothalamic regions of the brain. These interactions ultimately result in a timely increase in the secretion of gonadotropin-releasing hormone (GnRH). Researchers for years have believed that this increase is due to a diminished inhibitory tone which has applied a prepubertal brake on GnRH secretion, as well as to the gradual development of excitatory inputs driving the increased release of the peptide. Over the years, insulin-like growth factor-1 (IGF-1) has emerged as a prime candidate for playing an important role in the onset of puberty. This review will first present initial research demonstrating that IGF-1 increases in circulation as puberty approaches, is able to induce the release of prepubertal GnRH, and can advance the timing of puberty. More recent findings depict an early action of IGF-1 to activate a pathway that releases the inhibitory brake on prepubertal GnRH secretion provided by dynorphin, as well as demonstrating that IGF-1 can also act later in the process to regulate the synthesis and release of kisspeptin, a potent stimulator of GnRH at puberty.
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Affiliation(s)
- William L Dees
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA,
| | - Jill K Hiney
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA
| | - Vinod K Srivastava
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA
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Ramirez-Expósito MJ, Martínez-Martos JM, Cantón-Habas V, Carrera-González MDP. Moderate Beer Consumption Modifies Tumoral Growth Parameters and Pyrrolidone Carboxypeptidase Type-I and Type-II Specific Activities in the Hypothalamus-Pituitary-Mammary Gland Axis in an Animal Model of Breast Cancer. Nutr Cancer 2020; 73:2695-2707. [PMID: 33305601 DOI: 10.1080/01635581.2020.1856891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AIMS To determine the effect of moderate alcoholic and nonalcoholic beer consumption on tumoral growth parameters, the histopathology, pyrrolidone carboxypeptidase type I (Pcp I), and type II (Pcp II) specific activities in the hypothalamus-pituitary-mammary gland axis, and the circulating levels of estradiol (E2) and progesterone (P4) in rats with N-methyl-N-nitrosourea (NMU) induced mammary tumors. MATERIAL AND METHODS Food and drink intake, weight gain and tumor growth parameters were collected. The malignant phenotype of the tumor was performed using the Scarff-Bloom-Richardson grading method. Pcp specific activities were fluorometrically analyzed using pyroglutamyl-β-naphthylamide as substrate. Circulating steroid hormones were determined. RESULTS Differences were found in tumoral parameters, depending on the drink. Animals that were given alcohol-containing beer (A/C) beer to drink showed the lowest values of hypothalamic Pcp I, in association with the lowest levels of circulating E2. The significant decrease in Pcp I activity in all NMU-treated groups suggest a clear role of the Pcp I in the tumoral process, and A/C beer interferes with it. DISCUSSION Moderate consumption of alcoholic beer would have beneficial effects against mammary tumors through the modification of the endocrine status mediated by GnRH due to changes on Pcp I and II activities at different levels.
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Affiliation(s)
- María Jesús Ramirez-Expósito
- Department of Health Sciences, Faculty of Experimental and Health Sciences, University of Jaén, Jaén, Spain.,Experimental and Clinical Physiopathology Research Group CTS-1039, University of Jaén, Jaén, Spain
| | - José Manuel Martínez-Martos
- Department of Health Sciences, Faculty of Experimental and Health Sciences, University of Jaén, Jaén, Spain.,Experimental and Clinical Physiopathology Research Group CTS-1039, University of Jaén, Jaén, Spain
| | - Vanesa Cantón-Habas
- Department of Nursing, Pharmacology and Physiotherapy, Faculty of Medicine and Nursing, University of Cordoba. IMIBIC, Córdoba, Spain
| | - María Del Pilar Carrera-González
- Experimental and Clinical Physiopathology Research Group CTS-1039, University of Jaén, Jaén, Spain.,Department of Nursing, Pharmacology and Physiotherapy, Faculty of Medicine and Nursing, University of Cordoba. IMIBIC, Córdoba, Spain
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Cao G, Gao Z, Jiang Y, Chu M. Lin28 gene and mammalian puberty. Mol Reprod Dev 2020; 87:525-533. [PMID: 32363678 DOI: 10.1002/mrd.23347] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 04/21/2020] [Indexed: 11/10/2022]
Abstract
Lin28a and Lin28b, homologs of the Caenorhabditis elegans Lin28 gene, play important roles in cell pluripotency, reprogramming, and tumorigenicity. Recently, genome-wide association and transgenic studies showed that Lin28a and/or Lin28b gene were involved in the onset of mammalian puberty, the stage representing the attainment of reproduction capacity; however, the detailed mechanism of these genes in mammalian puberty remains largely unknown. The present paper reviews the research progress on the roles of Lin28a/b genes in the onset of mammalian puberty by analyzing the results coming from gene expression patterns, mutations, and transgenic studies, and put forward possible pathways for further studies on their roles in animal reproduction.
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Affiliation(s)
- Guiling Cao
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,College of Agriculture, Liaocheng University, Liaocheng, China
| | - Zeyang Gao
- College of Agriculture, Liaocheng University, Liaocheng, China
| | - Yunliang Jiang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Mingxing Chu
- Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction, Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Dees WL, Hiney JK, Srivastava VK. Regulation of prepubertal dynorphin secretion in the medial basal hypothalamus of the female rat. J Neuroendocrinol 2019; 31:e12810. [PMID: 31715027 PMCID: PMC6916394 DOI: 10.1111/jne.12810] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/21/2019] [Accepted: 11/08/2019] [Indexed: 11/27/2022]
Abstract
The onset of puberty is the result of an increase in secretion of hypothalamic gonadotrophin-releasing hormone (GnRH). This action is a result of not only the development of stimulatory inputs to its release, but also the gradual decrease in inhibitory inputs that restrain release of the peptide prior to pubertal onset. Dynorphin (DYN) is one of the inhibitory inputs produced in the medial basal hypothalamus (MBH); however, little is known about what substance(s) control its prepubertal synthesis and release. Because neurokinin B (NKB) increases in the hypothalamus as puberty approaches, we considered it a candidate for such a role. An initial study investigated the acute effects of an NKB agonist, senktide, on the secretion of DYN from MBH tissues incubated in vitro. In other experiments, central injections of senktide were administered to animals for 4 days then MBHs were collected for assessment of DYN synthesis or for the in vitro secretion of both DYN and GnRH. Because insulin-like growth factor (IGF)-1 has been shown to play an important role at puberty, additional animals received central injections of this peptide for 4 days to assess NKB and DYN synthesis or the in vitro secretion of NKB. The results obtained show that senktide administration up-regulates the NKB receptor protein, at the same time as suppressing the DYN and its receptor. Senktide consistently suppressed DYN and elevated GnRH secretion in the same tissue incubates from both the acute and chronic studies. IGF-1 administration caused an increase in NKB protein, at the same time as decreasing DYN protein. Furthermore, the central administration of IGF-1 caused an increase in NKB release, an action blocked by the IGF-1 receptor blocker, JB-1. These results indicate that the IGF-1/NKB pathway contributes to suppressing the DYN inhibitory tone on prepubertal GnRH secretion and thus facilitates the puberty-related increase in the release of GnRH to accelerate the onset of puberty.
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Affiliation(s)
- William L. Dees
- Department of Veterinary Integrative BiosciencesCollege of Veterinary MedicineTexas A&M UniversityCollege StationTXUSA
| | - Jill K. Hiney
- Department of Veterinary Integrative BiosciencesCollege of Veterinary MedicineTexas A&M UniversityCollege StationTXUSA
| | - Vinod K. Srivastava
- Department of Veterinary Integrative BiosciencesCollege of Veterinary MedicineTexas A&M UniversityCollege StationTXUSA
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Sliwowska JH, Ziarniak K, Dudek M, Matuszewska J, Tena-Sempere M. Dangerous liaisons for pubertal maturation: the impact of alcohol consumption and obesity on the timing of puberty†. Biol Reprod 2018; 100:25-40. [DOI: 10.1093/biolre/ioy168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 07/25/2018] [Indexed: 12/13/2022] Open
Affiliation(s)
- Joanna H Sliwowska
- Laboratory of Neurobiology, Institute of Zoology, Poznan University of Life Sciences, Poznan, Poland
| | - Kamil Ziarniak
- Laboratory of Neurobiology, Institute of Zoology, Poznan University of Life Sciences, Poznan, Poland
| | - Monika Dudek
- Laboratory of Neurobiology, Institute of Zoology, Poznan University of Life Sciences, Poznan, Poland
| | - Julia Matuszewska
- Laboratory of Neurobiology, Institute of Zoology, Poznan University of Life Sciences, Poznan, Poland
| | - Manuel Tena-Sempere
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, and Instituto Maimonides de Investigación Biomédica de Cordoba (IMIBIC), Cordoba, Spain
- CIBEROBN - Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Cordoba, Spain
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Srivastava VK, Hiney JK, Dees WL. Alcohol Delays the Onset of Puberty in the Female Rat by Altering Key Hypothalamic Events. Alcohol Clin Exp Res 2018; 42:1166-1176. [PMID: 29689132 DOI: 10.1111/acer.13762] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/13/2018] [Indexed: 01/12/2023]
Abstract
BACKGROUND Because alcohol (ALC) delays signs of pubertal development, we assessed the time course of events associated with the synthesis of critical hypothalamic peptides that regulate secretion of luteinizing hormone-releasing hormone (LHRH), the peptide that drives the pubertal process. METHODS Immature female rats were administered either laboratory chow or BioServe isocaloric control or ALC-liquid diets from 27 through 33 days of age. On days 28, 29, 31, and 33, animals were killed by decapitation and tissue blocks containing the medial basal hypothalamus (MBH) and the rostral hypothalamic area (RHA) were isolated and stored frozen until assessed by Western blot analysis. RESULTS Synthesis of dynorphin (DYN), a prepubertal inhibitor of LHRH secretion, was increased (p < 0.05) in the MBH of ALC-treated animals by day 29. DYN was further elevated (p < 0.01) on day 33 and was associated with an increase (p < 0.01) in DYN receptor expression. ALC did not affect synthesis of neurokinin B (NKB), a prepubertal stimulator of LHRH; however, it did suppress (p < 0.05) NKB receptor expression in the MBH by day 31. The most potent stimulator of prepubertal LHRH secretion, kisspeptin (Kp), was also decreased (p < 0.05) in the MBH as early as day 29, with continued suppression (p < 0.01) through day 33. Similar timely suppressions of mammalian target of rapamycin (mTOR), an immediate upstream regulator of Kp, were also noted. These decreases in mTOR and Kp were consistent with ALC stimulating (p < 0.05) the p-AMP-activated protein kinase/Raptor inhibitory pathway to mTOR on day 29, then later suppressing (p < 0.001) an Akt-mediated induction pathway to mTOR by day 31. In the RHA, ALC affected the pathways regulating Kp in a manner similar to that described in the MBH; however, these effects were not noted until day 33. CONCLUSIONS ALC acts within the MBH as early as 29 days to induce inhibitor and repressor inputs to LHRH, while depressing stimulatory inputs to the peptide. Collectively, these events lead to delayed signs of pubertal development.
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Affiliation(s)
- Vinod K Srivastava
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Jill K Hiney
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - William L Dees
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas
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Abstract
This paper is the thirty-eighth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2015 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior, and the roles of these opioid peptides and receptors in pain and analgesia, stress and social status, tolerance and dependence, learning and memory, eating and drinking, drug abuse and alcohol, sexual activity and hormones, pregnancy, development and endocrinology, mental illness and mood, seizures and neurologic disorders, electrical-related activity and neurophysiology, general activity and locomotion, gastrointestinal, renal and hepatic functions, cardiovascular responses, respiration and thermoregulation, and immunological responses.
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, United States.
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Dees WL, Hiney JK, Srivastava VK. Alcohol and Puberty: Mechanisms of Delayed Development. Alcohol Res 2017; 38:277-282. [PMID: 28988578 PMCID: PMC5513690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Adolescence represents a vulnerable period for developing youth. Alcohol use and misuse are especially problematic behaviors during this time. Adolescents are more sensitive to alcohol and less tolerant of its detrimental effects than are adults. Research in humans and animals has revealed that early alcohol consumption can result in delayed pubertal development. Animal studies have shown that alcohol detrimentally affects neuroendocrine systems within the hypothalamic region of the brain that are associated with the normal, timely onset of the pubertal process. To effectively restore development and shorten recovery time associated with the adverse effects of alcohol on puberty, researchers must first understand the molecular and physiological mechanisms by which alcohol interferes with critical hypothalamic functions.
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Affiliation(s)
- William L Dees
- William L. Dees, Ph.D., is a Professor; Jill K. Hiney, Ph.D., is a Research Assistant Professor; and Vinod K. Srivastava, Ph.D., is a Research Associate Professor, all in the Department of Veterinary Integrative Sciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Jill K Hiney
- William L. Dees, Ph.D., is a Professor; Jill K. Hiney, Ph.D., is a Research Assistant Professor; and Vinod K. Srivastava, Ph.D., is a Research Associate Professor, all in the Department of Veterinary Integrative Sciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Vinod K Srivastava
- William L. Dees, Ph.D., is a Professor; Jill K. Hiney, Ph.D., is a Research Assistant Professor; and Vinod K. Srivastava, Ph.D., is a Research Associate Professor, all in the Department of Veterinary Integrative Sciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas
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