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Vallée A, Lecarpentier Y. Curcumin and Endometriosis. Int J Mol Sci 2020; 21:E2440. [PMID: 32244563 PMCID: PMC7177778 DOI: 10.3390/ijms21072440] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/17/2020] [Accepted: 03/23/2020] [Indexed: 12/14/2022] Open
Abstract
Endometriosis is one of the main common gynecological disorders, which is characterized by the presence of glands and stroma outside the uterine cavity. Some findings have highlighted the main role of inflammation in endometriosis by acting on proliferation, apoptosis and angiogenesis. Oxidative stress, an imbalance between reactive oxygen species and antioxidants, could have a key role in the initiation and progression of endometriosis by resulting in inflammatory responses in the peritoneal cavity. Nevertheless, the mechanisms underlying this disease are still unclear and therapies are not currently efficient. Curcumin is a major anti-inflammatory agent. Several findings have highlighted the anti-oxidant, anti-inflammatory and anti-angiogenic properties of curcumin. The purpose of this review is to summarize the potential action of curcumin in endometriosis by acting on inflammation, oxidative stress, invasion and adhesion, apoptosis and angiogenesis.
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Affiliation(s)
- Alexandre Vallée
- Diagnosis and Therapeutic Center, Hypertension and Cardiovascular Prevention Unit, Hôtel-Dieu Hospital, AP-HP, Paris-Descartes University, 75004 Paris, France
| | - Yves Lecarpentier
- Centre de Recherche Clinique, Grand Hôpital de l’Est Francilien (GHEF), 77100 Meaux, France;
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Wang B, Wen H, Smith W, Hao D, He B, Kong L. Regulation effects of melatonin on bone marrow mesenchymal stem cell differentiation. J Cell Physiol 2019; 234:1008-1015. [PMID: 30145787 DOI: 10.1002/jcp.27090] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 06/28/2018] [Indexed: 12/26/2022]
Abstract
Melatonin's therapeutic potential has been highly underestimated because its biological functional roles are diverse and relevant mechanisms are complicated. Among the numerous biological activities of melatonin, its regulatory effects on pluripotent mesenchymal stem cells (MSCs), which are found in bone marrow stem cells (BMSCs) and adipose tissue (AD-MSC), have been recently proposed, which has received increasingly more attention in recent studies. Moreover, receptor-dependent and receptor-independent responses to melatonin are identified to occur in these cells by regulating signaling pathways, which drive the commitment and differentiation of MSCs into osteogenic, chondrogenic, or adipogenic lineages. Therefore, the aim of our current review is to summarize the evidence related to the utility of melatonin as a regulatory agent by focusing on its relationship with the differentiation of MSCs. In particular, we aimed to review its roles in promoting osteogenic and chondrogenic differentiation and the relevant signaling cascades involved. Also, the roles that melatonin and, particularly, its receptors play in these processes are highlighted.
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Affiliation(s)
- Biao Wang
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Hao Wen
- Department of Orthopedic, Yan'an University Medical School, Yan'an, China
| | - Wanli Smith
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Dingjun Hao
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Baorong He
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Lingbo Kong
- Department of Spine Surgery, Honghui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, China
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Abecia JA, Forcada F, Vázquez MI, Muiño-Blanco T, Cebrián-Pérez JA, Pérez-Pe R, Casao A. Role of melatonin on embryo viability in sheep. Reprod Fertil Dev 2019; 31:82-92. [PMID: 32188544 DOI: 10.1071/rd18308] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Melatonin is a natural hormone synthesised in the pineal gland, the activity of which is regulated by day-night perception and dictates seasonal rhythms in reproduction in ovine species. Exogenous melatonin, administered via subcutaneous implants, is used to prolong the breeding season of ewes and can increase the proportion of pregnant ewes (fertility rate) and litter size. The increased proportion of ewes that become pregnant and the number of lambs born per lambing among melatonin-treated sheep may be caused by increased embryo survival, through enhanced luteal function, reduced antiluteolytic mechanisms, or improved embryo quality. This review focuses on the effects of melatonin on embryo viability and summarises the processes by which this hormone affects the ovary, follicle, oocyte, corpus luteum and embryo. Moreover, the effects of melatonin on the mechanisms of invivo maternal recognition of pregnancy in sheep and the protective action that it appears to have on the invitro procedures that are used to obtain healthy embryos are reviewed.
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Affiliation(s)
- José-Alfonso Abecia
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Fernando Forcada
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet, 177, 50013 Zaragoza, Spain
| | - María-Isabel Vázquez
- Departamento de Reproducción Animal, Facultad de Agronomía y Veterinaria, Universidad Nacional de Río Cuarto, Ruta Nacional 36, Km 601, 5800 Río Cuarto, Córdoba, Argentina
| | - Teresa Muiño-Blanco
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet, 177, 50013 Zaragoza, Spain
| | - José A Cebrián-Pérez
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Rosaura Pérez-Pe
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet, 177, 50013 Zaragoza, Spain
| | - Adriana Casao
- Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Facultad de Veterinaria, Miguel Servet, 177, 50013 Zaragoza, Spain
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Chronodisruption: An untimely cause of preterm birth? Best Pract Res Clin Obstet Gynaecol 2018; 52:60-67. [DOI: 10.1016/j.bpobgyn.2018.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 08/09/2018] [Indexed: 12/23/2022]
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Görük NY, Deveci E. Immunoexpression of vascular endothelial growth factor and B-cell lymphoma 2 in the uterine tissue of rats treated with melatonin in the estrus phase1. Acta Cir Bras 2018; 33:629-640. [PMID: 30110064 DOI: 10.1590/s0102-865020180070000008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/21/2018] [Indexed: 11/22/2022] Open
Abstract
PURPOSE To investigate the effect of melatonin on uterine tissue in the ovariectomized rat model. METHODS Fourty Wistar albino rats were divided into four groups for histologic and immunohistochemical examination. The rats were first numbered randomly and then randomly divided into 4 equal groups: control (group 1), torsion (group 2), torsion+detorsion (group 3) and torsion+detorsion+melatonin (group 4) groups. In addition, four Wistar albino rats were used for western blot analysis in each group. And also, malondialdehyde (MDA) levels were measured biochemically in all rats. RESULTS The histopathological examination of the uterine tissue in rats ovarectomized showed a degeneration in uterine glands, dilation of blood vessels in the internal layer with a thrombosis and bleeding, abnormal nucleuses and vacuolated cytoplasm above and below the nucleus. In torsion group, the apoptotic cells increased in luminal epithelium and gland cells. In the melatonin group showed that the Bcl2 negative effect on the uterine epithelium and did not lead to apoptotic cells. CONCLUSION The increase in vascular endothelial growth factor expression resulted in the rearrangement of endothelial cell growth and the induction of angiogenesis.
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Affiliation(s)
- Neval Yaman Görük
- MD, Department of Obstetrics and Gynecology, Memorial Hospital, Diyarbakır, Turkey. Conception and design of the study, technical procedures, manuscript writing, critical revision
| | - Engin Deveci
- PhD, Professor, Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır, Turkey. Conception and design of the study, technical procedures, histological examinations, manuscript writing, critical revision
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Yang HL, Zhou WJ, Gu CJ, Meng YH, Shao J, Li DJ, Li MQ. Pleiotropic roles of melatonin in endometriosis, recurrent spontaneous abortion, and polycystic ovary syndrome. Am J Reprod Immunol 2018; 80:e12839. [PMID: 29493042 DOI: 10.1111/aji.12839] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 02/06/2018] [Indexed: 12/22/2022] Open
Abstract
Melatonin is a neurohormone synthesized from the aromatic amino acid tryptophan mainly by the pineal gland of mammals. Melatonin acts as a broad-spectrum antioxidant, powerful free radical scavenger, anti-inflammatory agent, anticarcinogenic factor, sleep inducer and regulator of the circadian rhythm, and potential immunoregulator. Melatonin and reproductive system are interrelated under both physiological and pathological conditions. Oxidative stress, inflammation, and immune dysregulation are associated with the pathogenesis of the female reproductive system which causes endometriosis (EMS), recurrent spontaneous abortion (RSA), and polycystic ovary syndrome (PCOS). Accumulating studies have indicated that melatonin plays pleiotropic and essential roles in these obstetrical and gynecological disorders and would be a candidate therapeutic drug to regulate inflammation and immune function and protect special cells or organs. Here, we systematically review the pleiotropic roles of melatonin in EMS, RSA, and PCOS to explore its pathological implications and treatment potential.
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Affiliation(s)
- Hui-Li Yang
- Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai, China
| | - Wen-Jie Zhou
- Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai, China
| | - Chun-Jie Gu
- Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai, China
| | - Yu-Han Meng
- Reproductive Medical Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Jun Shao
- Department of Gynecology, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai, China
| | - Da-Jin Li
- Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai, China
| | - Ming-Qing Li
- Laboratory for Reproductive Immunology, Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai, China
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Tian X, Wang F, Zhang L, He C, Ji P, Wang J, Zhang Z, Lv D, Abulizi W, Wang X, Lian Z, Liu G. Beneficial Effects of Melatonin on the In Vitro Maturation of Sheep Oocytes and Its Relation to Melatonin Receptors. Int J Mol Sci 2017; 18:ijms18040834. [PMID: 28420163 PMCID: PMC5412418 DOI: 10.3390/ijms18040834] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 03/31/2017] [Accepted: 04/07/2017] [Indexed: 12/19/2022] Open
Abstract
(1) Background: The binding sites of melatonin, as a multifunctional molecule, have been identified in human, porcine, and bovine samples. However, the binding sites and mechanisms of melatonin have not been reported in sheep; (2) Methods: Cumulus–oocyte complexes (COCs) were cultured in TCM-199 supplemented with melatonin at concentrations of 0, 10−3, 10−5, 10−7, 10−9, and 10−11 M. Melatonin receptors (MT1 and MT2) were evaluated via immunofluorescence and Western blot. The effects of melatonin on cumulus cell expansion, nuclear maturation, embryo development, and related gene (GDF9, DNMT1, PTX3, HAS2, and EGFR) expression were investigated. The level of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) were evaluated in oocytes and cumulus, respectively; (3) Results: Both MT1 and MT2 were expressed in oocytes, cumulus cells, and granulosa cells. Melatonin with a concentration of 10−7 M significantly enhanced the rates of nuclear maturation, cumulus cells expansion, cleavage, and blastocyst. Melatonin enhanced the expression of BMP15 in oocytes and of PTX3, HAS2, and EGFR in cumulus cells. Melatonin decreased the cAMP level of oocytes but enhanced the cGMP level in oocytes and cumulus cells; (4) Conclusion: The higher presence of MT1 in GV cumulus cells and the beneficial effects of melatonin indicated that its roles in regulating sheep oocyte maturation may be mediated mainly by the MT1 receptor.
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Affiliation(s)
- Xiuzhi Tian
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Feng Wang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Lu Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Changjiu He
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Pengyun Ji
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Jing Wang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Zhenzhen Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Dongying Lv
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Wusiman Abulizi
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
| | - Xuguang Wang
- College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China.
| | - Zhengxing Lian
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Guoshi Liu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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Effect of Melatonin on the Extracellular-Regulated Kinase Signal Pathway Activation and Human Osteoblastic Cell Line hFOB 1.19 Proliferation. Int J Mol Sci 2015; 16:10337-53. [PMID: 25961946 PMCID: PMC4463649 DOI: 10.3390/ijms160510337] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 04/21/2015] [Accepted: 04/27/2015] [Indexed: 02/06/2023] Open
Abstract
It has been shown that melatonin may affect bone metabolism. However, it is controversial whether melatonin could promote osteoblast proliferation, and the precise molecular mechanism of melatonin on osteoblast proliferation is still obscure. In this study, the results of the CCK-8 assay showed that melatonin significantly promoted human osteoblastic cell line hFOB 1.19 cell proliferation at 1, 2.5, 5, 10, 25, 50 and 100 µM concentrations for 24 h, but there were no significant differences among the groups. Western blot demonstrated that 10 µM melatonin significantly promoted ERK1/2 phosphorylation. Furthermore, we also detected the phosphorylation of c-Raf, MEK1/2, p90RSK and MSK1, and all of them increased with 10 µM melatonin. U0126 (a selective inhibitor of MEK that disrupts downstream activation of ERK1/2) downregulated the phosphorylation of ERK1/2, p90RSK and MSK1. U0126 also attenuated the proliferation of osteoblasts stimulated by melatonin. In conclusion, this study for the first time indicates that melatonin (10 nM–100 µM) promotes the proliferation of a human osteoblastic cell line hFOB 1.19 through activation of c-Raf, MEK1/2, ERK1/2, p90RSK and MSK1.
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Mao L, Yuan L, Xiang S, Zeringue SB, Dauchy RT, Blask DE, Hauch A, Hill SM. Molecular deficiency (ies) in MT₁ melatonin signaling pathway underlies the melatonin-unresponsive phenotype in MDA-MB-231 human breast cancer cells. J Pineal Res 2014; 56:246-53. [PMID: 24372669 PMCID: PMC4868402 DOI: 10.1111/jpi.12117] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Accepted: 12/20/2013] [Indexed: 12/15/2022]
Abstract
Melatonin has been shown repeatedly to inhibit the growth of human breast tumor cells in vitro and in vivo. Its antiproliferative effects have been well studied in MCF-7 human breast cancer cells and several other estrogen receptor α (ERα)-positive human breast cancer cell lines. However, the MDA-MB-231 breast cancer cell line, an ERα-negative cell line widely used in breast cancer research, has been shown to be unresponsive to melatonin's growth-suppressive effect in vitro. Here, we examined the effect of melatonin on the cell proliferation of several ERα-negative breast cancer cell lines including MDA-MB-231, BT-20, and SK-BR-3 cells. Although the MT1 G-protein-coupled receptor is expressed in all three cell lines, melatonin significantly suppressed the proliferation of SK-BR-3 cells without having any significant effect on the growth of MDA-MB-231 and BT-20 cells. We confirmed that the MT1-associated Gα proteins are expressed in MDA-MB-231 cells. Further studies demonstrated that the melatonin unresponsiveness in MDA-MB-231 cells may be caused by aberrant signaling downstream of the Gαi proteins, resulting in differential regulation of ERK1/2 activity.
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Affiliation(s)
- Lulu Mao
- Department of Structural and Cellular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Tulane Cancer Center and Louisiana Cancer Research Consortium, New Orleans, LA, USA
| | - Lin Yuan
- Department of Structural and Cellular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Tulane Cancer Center and Louisiana Cancer Research Consortium, New Orleans, LA, USA
| | - Shulin Xiang
- Department of Structural and Cellular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Tulane Cancer Center and Louisiana Cancer Research Consortium, New Orleans, LA, USA
| | - Samantha B. Zeringue
- Department of Surgery, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
| | - Robert T. Dauchy
- Department of Structural and Cellular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Laboratory of Chrono-Neuroendocrine Oncology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Tulane Cancer Center and Louisiana Cancer Research Consortium, New Orleans, LA, USA
| | - David E. Blask
- Department of Structural and Cellular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Laboratory of Chrono-Neuroendocrine Oncology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Tulane Cancer Center and Louisiana Cancer Research Consortium, New Orleans, LA, USA
| | - Adam Hauch
- Department of Surgery, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
| | - Steven M. Hill
- Department of Structural and Cellular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA 70112, USA
- Tulane Cancer Center and Louisiana Cancer Research Consortium, New Orleans, LA, USA
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Boden MJ, Varcoe TJ, Kennaway DJ. Circadian regulation of reproduction: from gamete to offspring. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2013; 113:387-97. [PMID: 23380455 DOI: 10.1016/j.pbiomolbio.2013.01.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 12/10/2012] [Accepted: 01/22/2013] [Indexed: 01/19/2023]
Abstract
Few challenges are more critical to the survival of a species than reproduction. To ensure reproductive success, myriad aspects of physiology and behaviour need to be tightly orchestrated within the animal, as well as timed appropriately with the external environment. This is accomplished through an endogenous circadian timing system generated at the cellular level through a series of interlocked transcription/translation feedback loops, leading to the overt expression of circadian rhythms. These expression patterns are found throughout the body, and are intimately interwoven with both the timing and function of the reproductive process. In this review we highlight the many aspects of reproductive physiology in which circadian rhythms are known to play a role, including regulation of the estrus cycle, the LH surge and ovulation, the production and maturation of sperm and the timing of insemination and fertilisation. We will also describe roles for circadian rhythms in support of the preimplantation embryo in the oviduct, implantation/placentation, as well as the control of parturition and early postnatal life. There are several key differences in physiology between humans and the model systems used for the study of circadian disruption, and these challenges to interpretation will be discussed as part of this review.
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Affiliation(s)
- M J Boden
- Robinson Institute, Research Centre for Reproductive Health, Department of Obstetrics and Gynaecology, University of Adelaide, Medical School, Adelaide, SA 5005, Australia.
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Abstract
Although the onset of spontaneous human parturition has long been known to occur preferentially during the nighttime and early morning hours, no convincing physiological explanation for this pattern has yet been proposed. This review focuses on the circadian timing of mammalian parturition, particularly in the human. It is proposed that differences in the phasing of parturition among different species are likely a function of opposite uterine responses to humoral cues, in particular those coding for time of day. The brain hormone melatonin fulfills many of the prerequisites to serve as a circadian signal for initiating uterine contractions that lead to human parturition. These encompass direct actions of melatonin on myometrial smooth muscle cells that are synergistic with oxytocin in facilitating greater uterine contractions at night. This may not only help to explain the nocturnal phasing of human parturition but also open new avenues for the management of term and preterm labor.
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Affiliation(s)
- James Olcese
- Department of Biomedical Sciences, Florida State University College of Medicine, Tallahassee, FL 32306, USA.
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Olcese J. Circadian aspects of mammalian parturition: a review. Mol Cell Endocrinol 2012; 349:62-7. [PMID: 21777654 DOI: 10.1016/j.mce.2011.06.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 06/24/2011] [Accepted: 06/28/2011] [Indexed: 01/04/2023]
Abstract
The identification of circadian clocks in endocrine tissues has added considerable depth and complexity to our understanding of their physiology. A growing body of research reveals circadian clock gene expression in the uterus of non-pregnant and pregnant rodents. This review will focus on the mammalian uterus and its rhythmicity, particularly as it pertains to the circadian timing of parturition. This key event in the reproductive axis shows dramatic species-specific differences in its circadian phase. It is proposed here that these differences in the phasing of mammalian parturition are likely a function of opposite uterine cell responses to humoral cues. The argument will be made that melatonin fulfills many of the criteria to serve as a circadian signal in the initiation of human parturition, including specific actions on uterine smooth muscle cells that are consistent with a role for this hormone in the circadian timing of parturition.
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Affiliation(s)
- James Olcese
- Florida State University College of Medicine, Department of Biomedical Sciences, Tallahassee, FL 32306-4300, USA.
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Chuffa LGA, Amorim JPA, Teixeira GR, Mendes LO, Fioruci BA, Pinheiro PFF, Seiva FRF, Novelli ELB, de Mello Júnior W, Martinez M, Almeida-Francia CCD, Martinez FE. Long-term exogenous melatonin treatment modulates overall feed efficiency and protects ovarian tissue against injuries caused by ethanol-induced oxidative stress in adult UChB rats. Alcohol Clin Exp Res 2011; 35:1498-508. [PMID: 21438888 DOI: 10.1111/j.1530-0277.2011.01486.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Chronic ethanol intake leads to reproductive damage including reactive oxygen species formation, which accelerates the oxidative process. Melatonin is known to regulate the reproductive cycle, food/liquid intake, and it may also act as a potent antioxidant indoleamine. The aim of this study was to verify the effects of alcoholism and melatonin treatment on overall feed efficiency and to analyze its protective role against the oxidative stress in the ovarian tissue of UChB rats (submitted to 10% [v/v] voluntary ethanol consumption). METHODS Forty adult female rats (n = 10/group) were finally selected for this study: UChB Co: drinking water only; and UChB EtOH: drinking ethanol at 2 to 6 ml/100 g/d + water, both receiving 0.9% NaCl + 95% ethanol 0.04 ml as vehicle. Concomitantly, UChB Co + M and UChB EtOH + M groups were infused with vehicle + melatonin (100 μg/100 g body weight/d) intraperitoneally over 60 days. All animals were euthanized by decapitation during the morning estrus (4 am). RESULTS Body weight gain was reduced with ethanol plus melatonin after 40 days of treatment. In both melatonin-treated groups, it was observed a reduction in food-derived calories and liquid intake toward the end of treatment. The amount of consumed ethanol dropped during the treatment. Estrous cycle was longer in rats that received both ethanol and melatonin, with prolonged diestrus. Following to oxidative status, lipid hydroperoxide levels were higher in the ovaries of ethanol-preferring rats and decreased after melatonin treatment. Additionally, antioxidant activities of superoxide dismutase, glutathione peroxidase activity, and glutathione reductase activity were increased in melatonin-treated groups. CONCLUSIONS We suggest that melatonin is able to affect feed efficiency and, conversely, it protects the ovaries against the oxidative stress arising from ethanol consumption.
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Affiliation(s)
- Luiz Gustavo A Chuffa
- Structural and Cell Biology Program, Institute of Biology, Universidade Estadual de Campinas-UNICAMP, Campinas, Brazil
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Chuffa LGA, Amorim JPA, Teixeira GR, Mendes LO, Fioruci BA, Pinheiro PFF, Seiva FRF, Novelli ELB, Mello Júnior W, Martinez M, Martinez FE. Long-term melatonin treatment reduces ovarian mass and enhances tissue antioxidant defenses during ovulation in the rat. Braz J Med Biol Res 2011; 44:217-23. [PMID: 21344135 DOI: 10.1590/s0100-879x2011007500018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Accepted: 01/27/2011] [Indexed: 01/21/2023] Open
Abstract
Melatonin regulates the reproductive cycle, energy metabolism and may also act as a potential antioxidant indoleamine. The present study was undertaken to investigate whether long-term melatonin treatment can induce reproductive alterations and if it can protect ovarian tissue against lipid peroxidation during ovulation. Twenty-four adult female Wistar rats, 60 days old (± 250-260 g), were randomly divided into two equal groups. The control group received 0.3 mL 0.9% NaCl + 0.04 mL 95% ethanol as vehicle, and the melatonin-treated group received vehicle + melatonin (100 µg·100 g body weight(-1)·day(-1)) both intraperitoneally daily for 60 days. All animals were killed by decapitation during the morning estrus at 4:00 am. Body weight gain and body mass index were reduced by melatonin after 10 days of treatment (P < 0.05). Also, a marked loss of appetite was observed with a fall in food intake, energy intake (melatonin 51.41 ± 1.28 vs control 57.35 ± 1.34 kcal/day) and glucose levels (melatonin 80.3 ± 4.49 vs control 103.5 ± 5.47 mg/dL) towards the end of treatment. Melatonin itself and changes in energy balance promoted reductions in ovarian mass (20.2%) and estrous cycle remained extensive (26.7%), arresting at diestrus. Regarding the oxidative profile, lipid hydroperoxide levels decreased after melatonin treatment (6.9%) and total antioxidant substances were enhanced within the ovaries (23.9%). Additionally, melatonin increased superoxide dismutase (21.3%), catalase (23.6%) and glutathione-reductase (14.8%) activities and the reducing power (10.2% GSH/GSSG ratio). We suggest that melatonin alters ovarian mass and estrous cyclicity and protects the ovaries by increasing superoxide dismutase, catalase and glutathione-reductase activities.
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Affiliation(s)
- L G A Chuffa
- Programa de Pós-Graduação em Biologia Celular e Estrutural, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, SP, Brasil
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15
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Effect of exogenous melatonin on the ovary, the embryo and the establishment of pregnancy in sheep. Animal 2008; 2:399-404. [DOI: 10.1017/s1751731107001383] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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16
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Witt-Enderby PA, Radio NM, Doctor JS, Davis VL. Therapeutic treatments potentially mediated by melatonin receptors: potential clinical uses in the prevention of osteoporosis, cancer and as an adjuvant therapy. J Pineal Res 2006; 41:297-305. [PMID: 17014686 DOI: 10.1111/j.1600-079x.2006.00369.x] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Melatonin's therapeutic potential is grossly underestimated because its functional roles are diverse and its mechanism(s) of action are complex and varied. Melatonin produces cellular effects via a variety of mechanisms in a receptor independent and dependent manner. In addition, melatonin is a chronobiotic agent secreted from the pineal gland during the hours of darkness. This diurnal release of melatonin impacts the sensitivity of melatonin receptors throughout a 24-hr period. This changing sensitivity probably contributes to the narrow therapeutic window for use of melatonin in treating sleep disorders, that is, at the light-to-dark (dusk) or dark-to-light (dawn) transition states. In addition to the cyclic changes in melatonin receptors, many genes cycle over the 24-hr period, independent or dependent upon the light/dark cycle. Interestingly, many of these genes support a role for melatonin in modulating metabolic and cardiovascular physiology as well as bone metabolism and immune function and detoxification of chemical agents and cancer reduction. Melatonin also enhances the actions of a variety of drugs or hormones; however, the role of melatonin receptors in modulating these processes is not known. The goal of this review is to summarize the evidence related to the utility of melatonin as a therapeutic agent by focusing on its other potential uses besides sleep disorders. In particular, its use in cancer prevention, osteoporosis and, as an adjuvant to other therapies are discussed. Also, the role that melatonin and, particularly, its receptors play in these processes are highlighted.
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Affiliation(s)
- Paula A Witt-Enderby
- Division of Pharmaceutical Sciences, Duquesne University, Pittsburgh, PA 15282, USA.
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17
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Sallinen P, Saarela S, Ilves M, Vakkuri O, Leppäluoto J. The expression of MT1 and MT2 melatonin receptor mRNA in several rat tissues. Life Sci 2005; 76:1123-34. [PMID: 15620576 DOI: 10.1016/j.lfs.2004.08.016] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2004] [Accepted: 08/16/2004] [Indexed: 12/15/2022]
Abstract
The mechanisms that mediate the various effects of melatonin in mammalian tissues are not always known. Therefore, the aim of this study was to investigate whether MT(1) and MT(2) melatonin receptors are expressed in certain tissues of the rat. The expression of MT(1) and MT(2) melatonin receptor mRNA was determined using a real-time quantitative RT-PCR method. In addition, we examined whether mRNA for either subtype of receptor shows any difference in the expression between midnight and noon, similar to the changes in melatonin concentrations in plasma and tissue samples. MT(1) and MT(2) melatonin receptor mRNAs were found in the rat hypothalamus, retina and small intestine. We also showed a low expression of MT(2) mRNA in the rat liver and heart SA node. In the heart apex and the Harderian gland, no appearance of either of the receptor mRNAs was detectable. A significant difference in the expression of MT(1) mRNA between day and night was found in the hypothalamus. In conclusion, our findings suggest that at least some effects of melatonin are mediated through membrane MT(1) and MT(2) receptors in the hypothalamus, the retina and the small intestine. Down-regulation of receptors might be one reason for the difference in the hypothalamic MT(1) melatonin receptor mRNA expression between midnight and noon. In the liver and the heart SA node, the physiological significance of possible MT(2) receptors remains unclear. According to our negative midnight and noon results in the Harderian gland and heart apex melatonin may exert its effect on these tissues by a non-receptor mechanism.
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Affiliation(s)
- Pirkko Sallinen
- Department of Biology, P.O. Box 3000, 90014 University of Oulu, Finland.
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18
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Steffens F, Zhou XB, Sausbier U, Sailer C, Motejlek K, Ruth P, Olcese J, Korth M, Wieland T. Melatonin receptor signaling in pregnant and nonpregnant rat uterine myocytes as probed by large conductance Ca2+-activated K+ channel activity. Mol Endocrinol 2003; 17:2103-15. [PMID: 12869590 DOI: 10.1210/me.2003-0047] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The mRNAs of MT1 and MT2 melatonin receptors are present in cells from nonpregnant (NPM) and pregnant (PM) rat myometrium. To investigate the coupling of melatonin receptors to Gq- and Gi-type of heterotrimeric G proteins, we analyzed the activity of large-conductance Ca2+-activated K+ (BKCa) channels, the expression of which in the uterus is confined to smooth muscle cells. The melatonin receptor agonist 2-iodomelatonin induced a pertussis toxin (PTX)-insensitive increase in channel open probability that was blocked by the nonselective antagonist luzindole. The 2-iodomelatonin effect on channel open probability was suppressed by overexpression of the Gqalpha-inactivating protein RGS16 and the phospholipase C inhibitor U-73122. The activity of BKCa channels is differentially regulated by protein kinase A (PKA) in NPM and PM cells. Thus, the beta-adrenoceptor agonist isoprenaline inhibited the BKCa channel conducted whole-cell outward current (Iout) in NPM cells and enhanced Iout in PM cells. Additional application of 2-iodomelatonin antagonized the isoprenaline effect on Iout in NPM cells but enhanced Iout in PM cells. All 2-iodomelatonin effects on Iout were sensitive to PTX treatment and the PKA inhibitor H-89. We therefore conclude that melatonin activates both the PTX-insensitive Gq/phospholipase C/Ca2+ and the PTX-sensitive Gi/cAMP/PKA signaling pathway in rat myometrium.
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MESH Headings
- Animals
- Calcium/pharmacology
- Cyclic AMP/metabolism
- Cyclic AMP-Dependent Protein Kinases/metabolism
- Female
- GTP-Binding Protein alpha Subunits, Gi-Go/metabolism
- GTP-Binding Protein alpha Subunits, Gq-G11/metabolism
- Isoproterenol/pharmacology
- Large-Conductance Calcium-Activated Potassium Channels
- Melatonin/analogs & derivatives
- Melatonin/pharmacology
- Membrane Potentials
- Myometrium/cytology
- Myometrium/metabolism
- Pertussis Toxin/pharmacology
- Potassium Channels, Calcium-Activated/physiology
- Pregnancy
- Rats
- Rats, Wistar
- Receptor, Melatonin, MT1/genetics
- Receptor, Melatonin, MT1/metabolism
- Receptor, Melatonin, MT2/genetics
- Receptor, Melatonin, MT2/metabolism
- Signal Transduction
- Type C Phospholipases/metabolism
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Affiliation(s)
- Frank Steffens
- Institut für Pharmakologie für Pharmazeuten, Universitätsklinikum Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
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19
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Witt-Enderby PA, Bennett J, Jarzynka MJ, Firestine S, Melan MA. Melatonin receptors and their regulation: biochemical and structural mechanisms. Life Sci 2003; 72:2183-98. [PMID: 12628439 DOI: 10.1016/s0024-3205(03)00098-5] [Citation(s) in RCA: 209] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
There is growing evidence demonstrating the complexity of melatonin's role in modulating a diverse number of physiological processes. This complexity could be attributed to the fact that melatonin receptors belong to two distinct classes of proteins, that is, the G-protein coupled receptor superfamily (MT(1), MT(2)) and the quinone reductase enzyme family (MT(3)) which makes them unique at the molecular level. Also, within the G-protein coupled receptor family of proteins, the MT(1) and MT(2) receptors can couple to multiple and distinct signal transduction cascades whose activation can lead to unique cellular responses. Also, throughout the 24-hour cycle, the receptors' sensitivity to specific cues fluctuates and this sensitivity can be modulated in a homologous fashion, that is, by melatonin itself, and in a heterologous manner, that is, by other cues including the photoperiod or estrogen. This sensitivity of response may reflect changes in melatonin receptor density that also occurs throughout the 24-hour light/dark cycle but out of phase with circulating melatonin levels. The mechanisms that underlie the changes in melatonin receptor density and function are still not well-understood, but data is beginning to show that transcriptional events and G-protein uncoupling may be involved. Even though this area of research is still in its infancy, great strides are being made everyday in elucidating the mechanisms that underlie melatonin receptor function and regulation. The focus of this review is to highlight some of these discoveries in an attempt to reveal the uniqueness of the melatonin receptor family while at the same time provide thought-provoking ideas to further advance this area of research. Thus, a brief overview of each of the mammalian melatonin receptor subtypes and the signal transduction cascades to which they couple will be discussed with a greater emphasis placed on the mechanisms underlying their regulation and the domains within the receptors essential for proper signaling.
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Affiliation(s)
- Paula A Witt-Enderby
- Division of Pharmaceutical Sciences, Duquesne University School of Pharmacy, 421 Mellon Hall, Pittsburgh, PA 15282, USA.
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20
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Zhao H, Pang SF, Poon AMS. Variations of mt1 melatonin receptor density in the rat uterus during decidualization, the estrous cycle and in response to exogenous steroid treatment. J Pineal Res 2002; 33:140-5. [PMID: 12220327 DOI: 10.1034/j.1600-079x.2002.02898.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The expression of mt1 receptor protein in the rat uterus was investigated using an anti-mt1 polyclonal antibody against the rat mt1 receptor. A melatonin receptor protein of 37 kDa was detectable by Western blotting in the rat uterine membrane preparations. Autoradiography with the melatonin ligand, 2-[125I]iodomelatonin, was used to localize melatonin receptors in the uterus of the estrous rats and to study the changes of melatonin receptors in pregnancy. Melatonin receptors were found to be localized in the estrous rat uterine antimesometrial stroma. As decidualization of the uterine stroma progressed during pregnancy, the melatonin binding sites were progressively reduced and became confined to the antimesometrial non-decidualized outer stroma. 2-[125I]Iodomelatonin binding sites were not seen in the mesometrial stromal cells during pregnancy. The role of ovarian hormones in the regulation of uterine melatonin receptors was examined by studying the binding at various phases of the estrous cycle, after ovariectomy with and without follow-on treatment of estradiol (E2), progesterone (P4) or both. 2-[125I]Iodomelatonin binding in the rat uterus fluctuated during the estrous cycle, being lowest during metestrus. Ovariectomy caused an almost 70% reduction of 2-[125I]iodomelatonin binding compared with the control. Injections of ovariectomized (OVX) rats with E2 or P4 alone or in combination for 11 days induced a partial restoration of 2-[125I]iodomelatonin binding in the OVX rats. The results show that mt1 melatonin receptors in the rat antimesometrial stroma are regulated by ovarian hormones.
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Affiliation(s)
- H Zhao
- Department of Physiology, Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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Zhao H, Pang SF, Poon AMS. mt(1) Receptor-mediated antiproliferative effects of melatonin on the rat uterine antimesometrial stromal cells. Mol Reprod Dev 2002; 61:192-9. [PMID: 11803554 DOI: 10.1002/mrd.1147] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
It has been shown that melatonin regulates uterine function. Our previous studies have demonstrated the presence of melatonin receptors in the rat uterine endometrium, indicating that melatonin may act directly on the uterus. In the present study, the histological localization of the rat uterine melatonin binding was revealed by autoradiography and the molecular subtyping was studied by in situ hybridization in the stromal cells. The signal transduction process and effects of melatonin on stromal cell proliferation was also investigated. Our autoradiograms showed that 2[(125)I]iodomelatonin binding sites were localized in the antimesometrial endometrial stroma. In situ hybridization with specific mt(1) receptor cDNA probe in the primary culture of antimesometrial stromal cells demonstrated the expression of mt(1) receptor mRNAs. Melatonin dose-dependently inhibited forskolin-stimulated cAMP accumulation, which was reversed by pertussis toxin. This indicates that the rat uterine melatonin receptors are negatively coupled to adenylate cyclase via pertussis toxin sensitive G(i) protein. Melatonin also inhibited the incorporation of [(3)H]thymidine in the rat uterine antimesometrial stromal cells, showing that melatonin has an anti-proliferative effect on the uterus. Our results suggest that melatonin may act directly on the mt(1) melatonin receptors in the rat uterine antimesometrial stromal cells to inhibit their proliferation. Its action may be mediated through a pertussis toxin-sensitive adenylate cyclase coupled G(i)-protein.
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Affiliation(s)
- Hang Zhao
- Department of Physiology, The University of Hong Kong, Li Shu Fan Building, Hong Kong, China
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