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Li H, Cheng J. 2-Phenylcyclopropylmethylamine (PCPMA) as a privileged scaffold for central nervous system drug design. Bioorg Med Chem Lett 2024; 101:129654. [PMID: 38360418 DOI: 10.1016/j.bmcl.2024.129654] [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: 01/09/2024] [Revised: 01/24/2024] [Accepted: 02/08/2024] [Indexed: 02/17/2024]
Abstract
The use of privileged scaffolds in medicinal chemistry is an effective way to accelerate the drug discovery process, especially at the hit/lead optimization stage. 2-Phenylcyclopropylmethylamine (PCPMA) is a less commonly used chemical scaffold in medicinal chemistry, but many PCPMA-containing compounds exert therapeutic effects for various diseases, in particular central nervous system (CNS) diseases such as depression, schizophrenia, sleep disorder, and Parkinson's disease. The backbone of the PCPMA scaffold enables a unique structure of an amino group linked to a benzene ring through an alkyl linker, making it a useful template for the design of bioactive compounds especially for CNS drug targets including aminergic GPCRs and transporters. This review summarizes the medicinal chemistry studies of PCPMA-containing drugs and drug-like molecules, their mechanisms of action, and biological activities. We conclude that PCPMA is a unique and useful privileged scaffold for CNS drug design.
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Affiliation(s)
- Huiqiong Li
- iHuman Institute and School of Life Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Jianjun Cheng
- iHuman Institute and School of Life Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China.
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2
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Maria Correa L, Moreno RD, Luis Riveros J. Hypothalamic-pituitary-gonadal axis response to photoperiod changes in female guanacos (Lama guanicoe). Gen Comp Endocrinol 2024; 347:114427. [PMID: 38141858 DOI: 10.1016/j.ygcen.2023.114427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/13/2023] [Accepted: 12/13/2023] [Indexed: 12/25/2023]
Abstract
The guanaco, a wild South American camelid, is renowned for its remarkable resilience to extreme conditions. Despite this, little is known about how reproductive hormones in female camelids are influenced during their seasonal breeding period, which occurs during long photoperiod. To explore this, the study investigated the response of the hypothalamic-pituitary-gonadal axis in female guanacos during short days (10L:14D; July) and long days (16L:8D; December) in the Mediterranean ecosystem (33°38'28″S, 70°34'27″W). Blood samples from 14 adult animals were collected, and measurements of melatonin, 17β-estradiol, FSH, and LH concentrations were taken. The results showed that melatonin concentration was lower (P < 0.05) during long days than short days, whereas 17β-estradiol, FSH, and LH concentrations were higher (P < 0.05) during long days compared to short days. Furthermore, the study detected the expression of the melatonin receptor 1A and kisspeptin in the hypothalamus and pituitary, suggesting that the pineal gland of female guanacos is sensitive to seasonal changes in day length. These findings also indicate a seasonal variation in the concentration of reproductive hormones, likely linked to the distinct modulation of the hypothalamic-pituitary-gonadal axis of female guanacos during short and long days.
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Affiliation(s)
- Lina Maria Correa
- Escuela de Medicina Veterinaria, Facultad de Recursos Naturales y Medicina Veterinaria, Universidad Santo Tomás, Carlos Schorr 255, Maule, Talca 3460000, Chile; Centro de Innovación de ovinos para el secano-OVISNOVA, Universidad Santo Tomás, Carlos Schorr 255, Maule, Talca 3460000, Chile; Escuela de postgrado, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 8940000, Chile.
| | - Ricardo D Moreno
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Marcoleta 49, Santiago 8320000, Chile.
| | - José Luis Riveros
- Escuela de postgrado, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 8940000, Chile; Departamento de Ciencias Animales, Facultad de Agronomía e Ingeniería Forestal, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Santiago 8940000, Chile.
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Sajjadpour Z, Hoseini Tavassol Z, Aghaei Meybodi HR, Eskandarynasab M, Pejman Sani M, Hasani-Ranjbar S, Larijani B. Evaluating the effectiveness of melatonin in reducing the risk of foot ulcers in diabetic patients. J Diabetes Metab Disord 2023; 22:1073-1082. [PMID: 37975123 PMCID: PMC10638255 DOI: 10.1007/s40200-023-01289-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 08/22/2023] [Indexed: 11/19/2023]
Abstract
Objectives Diabetes and its complications, as a major health concern, are associated with morbidity and mortality around the world. One of these complications is diabetic foot ulcer. Factors such as hyperglycemia, neuropathy, vascular damage and impaired immune system can cause foot ulcers. The present review aims to study the potential effects of melatonin, the main product of pineal glands, on diabetic foot ulcers. Methods A narrative review was performed using present literature in an attempt to identify the different aspects of melatonin's impact on diabetic foot ulcers by searching related keywords in electronic databases without any restriction. Results This review shows that, melatonin has anti-diabetic effects. It is effective in reducing the risk of hyperglycemia, neuropathy, vascular damage and immune system impairment in diabetic patients. By reducing these complications with melatonin, correspondingly, the incidence of diabetic foot ulcers may also decrease in these patients. Conclusions The results of this study indicate promising properties of melatonin while dealing with diabetic foot ulcers and their common underlying conditions, but still, it needs to be investigated more in future studies.
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Affiliation(s)
- Zahra Sajjadpour
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Hoseini Tavassol
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Aghaei Meybodi
- Evidence Based Medicine Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Eskandarynasab
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Experimental Medicine Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahnaz Pejman Sani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Shirin Hasani-Ranjbar
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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Mubashshir M, Ahmad N, Negi T, Sharma RB, Sköld HN, Ovais M. Exploring the mechanisms and impacts of melatonin on fish colouration. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023; 49:1511-1525. [PMID: 37982969 DOI: 10.1007/s10695-023-01271-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 11/09/2023] [Indexed: 11/21/2023]
Abstract
The pineal hormone melatonin is a multi-functional molecule with a recognized role in pigment aggregation in chromatophores, mediating its actions through binding to subtypes of its specific receptors. Since its discovery, melatonin has been known to be responsible for pigment aggregation towards the cell centre in fishes, including their embryos, as an adaptation to reduced light and thus results in pale body colouration. Diversity exists in the sensitivity of melanophores towards melatonin at interspecies, intraspecific levels, seasons, and amongst chromatophores at different regions of the animal body. In most of the fishes, melatonin leads to their skin paling at night. It is indicated that the melatonin receptors have characteristically maintained to show the same aggregating effects in fishes and other vertebrates in the evolutionary hierarchy. However, besides this aggregatory effect, melatonin is also responsible for pigment dispersion in certain fishes. Here is the demand in our review to explore further the nature of the dispersive behaviour of melatonin through the so-called β-melatonin receptors. It is clear that the pigment translocations in lower vertebrates under the effect of melatonin are mediated through the melatonin receptors coupled with other hormonal receptors as well. Therefore, being richly supplied with a variety of receptors, chromatophores and melanocytes can be used as in vitro test models for pharmacological applications of known and novel drugs. In this review, we present diverse effects of melatonin on chromatophores of fishes in particular with appropriate implications on most of the recent findings.
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Affiliation(s)
- Muhammad Mubashshir
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India.
- Department of Life Sciences, Faculty of Basic & Applied Sciences, Vivekananda Global University, Jaipur, Rajasthan, 303012, India.
| | - Nabeel Ahmad
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India
| | - Tripti Negi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India
| | - Renu Bala Sharma
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, Uttarakhand, 248007, India
| | | | - Mohd Ovais
- Department of Bio-Science, Barkatullah University, Bhopal, MP, 462026, India
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Pérez-Torres I, Aisa-Álvarez A, Casarez-Alvarado S, Borrayo G, Márquez-Velasco R, Guarner-Lans V, Manzano-Pech L, Cruz-Soto R, Gonzalez-Marcos O, Fuentevilla-Álvarez G, Gamboa R, Saucedo-Orozco H, Franco-Granillo J, Soto ME. Impact of Treatment with Antioxidants as an Adjuvant to Standard Therapy in Patients with Septic Shock: Analysis of the Correlation between Cytokine Storm and Oxidative Stress and Therapeutic Effects. Int J Mol Sci 2023; 24:16610. [PMID: 38068931 PMCID: PMC10706209 DOI: 10.3390/ijms242316610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/14/2023] [Accepted: 11/18/2023] [Indexed: 12/18/2023] Open
Abstract
Cellular homeostasis is lost or becomes dysfunctional during septic shock due to the activation of the inflammatory response and the deregulation of oxidative stress. Antioxidant therapy administered alongside standard treatment could restore this lost homeostasis. We included 131 patients with septic shock who were treated with standard treatment and vitamin C (Vit C), vitamin E (Vit E), N-acetylcysteine (NAC), or melatonin (MT), in a randomized trial. Organ damage quantified by Sequential Organ Failure Assessment (SOFA) score, and we determined levels of Interleukins (IL) IL1β, Tumor necrosis factor alpha (TNFα), IL-6, monocyte chemoattractant protein-1 (MCP-1), Transforming growth factor B (TGFβ), IL-4, IL-10, IL-12, and Interferon-γ (IFNγ). The SOFA score decreased in patients treated with Vit C, NAC, and MT. Patients treated with MT had statistically significantly reduced of IL-6, IL-8, MCP-1, and IL-10 levels. Lipid peroxidation, Nitrates and nitrites (NO3- and NO2-), glutathione reductase, and superoxide dismutase decreased after treatment with Vit C, Vit E, NAC, and MT. The levels of thiols recovered with the use of Vit E, and all patients treated with antioxidants maintained their selenium levels, in contrast with controls (p = 0.04). The findings regarding oxidative stress markers and cytokines after treatment with antioxidants allow us to consider to future the combined use of antioxidants in a randomized clinical trial with a larger sample to demonstrate the reproducibility of these beneficial effects.
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Affiliation(s)
- Israel Pérez-Torres
- Cardiovascular Biomedicine Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (I.P.-T.); (L.M.-P.)
| | - Alfredo Aisa-Álvarez
- Critical Care Department, American British Cowdray (ABC) Medical Center, PAI ABC Sur 136 No. 116, Col. las Américas, Mexico City 01120, Mexico; (A.A.-Á.); (O.G.-M.); (J.F.-G.)
| | - Sergio Casarez-Alvarado
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (S.C.-A.); (R.M.-V.); (R.C.-S.)
| | - Gabriela Borrayo
- Instituto Mexicano del Seguro Social, Dirección de Prestaciones Médicas Coordinación de Innovación en Salud, Ciudad de México 06700, Mexico;
| | - Ricardo Márquez-Velasco
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (S.C.-A.); (R.M.-V.); (R.C.-S.)
| | - Verónica Guarner-Lans
- Physiology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (V.G.-L.); (G.F.-Á.); (R.G.)
| | - Linaloe Manzano-Pech
- Cardiovascular Biomedicine Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (I.P.-T.); (L.M.-P.)
| | - Randall Cruz-Soto
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (S.C.-A.); (R.M.-V.); (R.C.-S.)
| | - Omar Gonzalez-Marcos
- Critical Care Department, American British Cowdray (ABC) Medical Center, PAI ABC Sur 136 No. 116, Col. las Américas, Mexico City 01120, Mexico; (A.A.-Á.); (O.G.-M.); (J.F.-G.)
| | - Giovanny Fuentevilla-Álvarez
- Physiology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (V.G.-L.); (G.F.-Á.); (R.G.)
| | - Ricardo Gamboa
- Physiology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (V.G.-L.); (G.F.-Á.); (R.G.)
| | | | - Juvenal Franco-Granillo
- Critical Care Department, American British Cowdray (ABC) Medical Center, PAI ABC Sur 136 No. 116, Col. las Américas, Mexico City 01120, Mexico; (A.A.-Á.); (O.G.-M.); (J.F.-G.)
| | - María Elena Soto
- Immunology Department, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico; (S.C.-A.); (R.M.-V.); (R.C.-S.)
- Research Direction Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano No. 1, Col. Sección XVI, Mexico City 14380, Mexico
- Cardiovascular Line in American British Cowdray (ABC) Medical Center, PAI ABC Sur 136 No. 116, Col. Las Américas, Mexico City 01120, Mexico
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Taha AM, Mahmoud AM, Ghonaim MM, Kamran A, AlSamhori JF, AlBarakat MM, Shrestha AB, Jaiswal V, Reiter RJ. Melatonin as a potential treatment for septic cardiomyopathy. Biomed Pharmacother 2023; 166:115305. [PMID: 37619482 DOI: 10.1016/j.biopha.2023.115305] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 08/02/2023] [Accepted: 08/07/2023] [Indexed: 08/26/2023] Open
Abstract
Septic cardiomyopathy (SCM) is a common complication of sepsis contributing to high mortality rates. Its pathophysiology involves complex factors, including inflammatory cytokines, mitochondrial dysfunction, oxidative stress, and immune dysregulation. Despite extensive research, no effective pharmacological agent has been established for sepsis-induced cardiomyopathy. Melatonin, a hormone with diverse functions in the body, has emerged as a potential agent for SCM through its anti-oxidant, anti-inflammatory, anti-apoptotic, and cardioprotective roles. Through various molecular levels of its mechanism of action, it counterattacks the adverse event of sepsis. Experimental studies have mentioned that melatonin protects against many cardiovascular diseases and exerts preventive effects on SCM. Moreover, melatonin has been investigated in combination with other drugs such as antibiotics, resveratrol, and anti-oxidants showing synergistic effects in reducing inflammation, anti-oxidant, and improving cardiac function. While preclinical studies have demonstrated positive results, clinical trials are required to establish the optimal dosage, route of administration, and treatment duration for melatonin in SCM. Its safety profile, low toxicity, and natural occurrence in the human body provide a favorable basis for its clinical use. This review aims to provide an overview of the current evidence of the use of melatonin in sepsis-induced cardiomyopathy (SICM). Melatonin appears to be promising as a possible treatment for sepsis-induced cardiomyopathy and demands further investigation.
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Affiliation(s)
- Amira Mohamed Taha
- Faculty of Medicine, Fayoum University, Fayoum, Egypt; Medical Research Group of Egypt (MRGE), Negida Academy, Arlington, MA, USA
| | | | | | - Ateeba Kamran
- Bachelor of Medicine, Bachelor of Surgery, Karachi Medical and Dental College, Karachi, Pakistan
| | | | - Majd M AlBarakat
- Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Abhigan Babu Shrestha
- Department of Internal Medicine, M Abdur Rahim Medical College, Dinajpur, Bangladesh.
| | | | - Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, TX, USA
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Mubashshir M, Ahmad N, Negi T, Rawal R, Singhvi N, Khatoon H, Laxmi V, Dubey O, Sharma RB, Negi G, Ovais M. Therapeutic Benefits of Melatonin against COVID-19. Neuroimmunomodulation 2023; 30:196-205. [PMID: 37336193 PMCID: PMC10614475 DOI: 10.1159/000531550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 06/02/2023] [Indexed: 06/21/2023] Open
Abstract
The assumption of the pineal hormone melatonin as a therapeutic use for COVID-19-affected people seems promising. Its intake has shown significant improvement in the patients' conditions. Higher melatonin titers in children may provide a protective shield against this disease. The hormone melatonin works as an anti-inflammatory, antioxidant, immunomodulator, and strategically slows down the cytokine release which is observed in the COVID-19 disease, thereby improving the overall health of afflicted patients. The medical community is expected shortly to use remedial attributes like anti-inflammatory, antioxidant, antivirals, etc., of melatonin in the successful prevention and cure of COVID-19 morbidity. Thus, the administration of melatonin seems auspicious in the cure and prevention of this COVID-19 fatality. Moreover, melatonin does not seem to reduce the efficiency of approved vaccines against the SARS-CoV-2 virus. Melatonin increases the production of inflammatory cytokines and Th1 and enhances both humoral and cell-mediated responses. Through the enhanced humoral immunity, melatonin exhibits antiviral activities by suppressing multiple inflammatory products such as IL-6, IL1β, and tumor necrosis factor α, which are immediately released during lung injury of severe COVID-19. Hence, the novel use of melatonin along with other antivirals as an early treatment option against COVID-19 infection is suggested. Here, we have chalked out the invasion mechanisms and appropriate implications of the latest findings concerned with melatonin against the virus SARS-CoV-2. Nevertheless, within the setting of a clinical intervention, the promising compounds must go through a series of studies before their recommendation. In the clinical field, this is done in a time-ordered sequence, in line with the phase label affixed to proper protocol of trials: phase I-phase II and the final phase III. Nevertheless, while medical recommendations can only be made on the basis of reassuring evidence, there are still three issues worth considering before implementation: representativeness, validity, and lastly generalizability.
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Affiliation(s)
- Muhammad Mubashshir
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Nabeel Ahmad
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Tripti Negi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Renu Rawal
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Nirjara Singhvi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Hina Khatoon
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Vijya Laxmi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Om Dubey
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Renu Bala Sharma
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Ganga Negi
- School of Allied Sciences, Dev Bhoomi Uttarakhand University, Dehradun, India
| | - Mohd Ovais
- Department of Bio-Science, Barkatullah University, Bhopal, India
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Liu Y, Wang D, Li T, Xu L, Li Z, Bai X, Tang M, Wang Y. Melatonin: A potential adjuvant therapy for septic myopathy. Biomed Pharmacother 2023; 158:114209. [PMID: 36916434 DOI: 10.1016/j.biopha.2022.114209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/24/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023] Open
Abstract
Septic myopathy, also known as ICU acquired weakness (ICU-AW), is a characteristic clinical symptom of patients with sepsis, mainly manifested as skeletal muscle weakness and muscular atrophy, which affects the respiratory and motor systems of patients, reduces the quality of life, and even threatens the survival of patients. Melatonin is one of the hormones secreted by the pineal gland. Previous studies have found that melatonin has anti-inflammatory, free radical scavenging, antioxidant stress, autophagic lysosome regulation, mitochondrial protection, and other multiple biological functions and plays a protective role in sepsis-related multiple organ dysfunction. Given the results of previous studies, we believe that melatonin may play an excellent regulatory role in the repair and regeneration of skeletal muscle atrophy in septic myopathy. Melatonin, as an over-the-counter drug, has the potential to be an early, complementary treatment for clinical trials. Based on previous research results, this article aims to critically discuss and review the effects of melatonin on sepsis and skeletal muscle depletion.
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Affiliation(s)
- Yukun Liu
- Department of Plastic and Cosmetic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Dongfang Wang
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Tianyu Li
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Ligang Xu
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Zhanfei Li
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Xiangjun Bai
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Manli Tang
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
| | - Yuchang Wang
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
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Klymenko A, Lutz D. Melatonin signalling in Schwann cells during neuroregeneration. Front Cell Dev Biol 2022; 10:999322. [PMID: 36299487 PMCID: PMC9589221 DOI: 10.3389/fcell.2022.999322] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/23/2022] [Indexed: 11/13/2022] Open
Abstract
It has widely been thought that in the process of nerve regeneration Schwann cells populate the injury site with myelinating, non–myelinating, phagocytic, repair, and mesenchyme–like phenotypes. It is now clear that the Schwann cells modify their shape and basal lamina as to accommodate re–growing axons, at the same time clear myelin debris generated upon injury, and regulate expression of extracellular matrix proteins at and around the lesion site. Such a remarkable plasticity may follow an intrinsic functional rhythm or a systemic circadian clock matching the demands of accurate timing and precision of signalling cascades in the regenerating nervous system. Schwann cells react to changes in the external circadian clock clues and to the Zeitgeber hormone melatonin by altering their plasticity. This raises the question of whether melatonin regulates Schwann cell activity during neurorepair and if circadian control and rhythmicity of Schwann cell functions are vital aspects of neuroregeneration. Here, we have focused on different schools of thought and emerging concepts of melatonin–mediated signalling in Schwann cells underlying peripheral nerve regeneration and discuss circadian rhythmicity as a possible component of neurorepair.
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Hypotensive effects of melatonin in rats: Focus on the model, measurement, application, and main mechanisms. Hypertens Res 2022; 45:1929-1944. [PMID: 36123396 DOI: 10.1038/s41440-022-01031-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/08/2022]
Abstract
The hypotensive effects of melatonin are based on a negative correlation between melatonin levels and blood pressure in humans. However, there is a positive correlation in nocturnal animals that are often used as experimental models in cardiovascular research, and the hypotensive effects and mechanism of melatonin action are often investigated in rats and mice. In rats, the hypotensive effects of melatonin have been studied in normotensive and spontaneously or experimentally induced hypertensive strains. In experimental animals, blood pressure is often measured indirectly during the light (passive) phase of the day by tail-cuff plethysmography, which has limitations regarding data quality and animal well-being compared to telemetry. Melatonin is administered to rats in drinking water, subcutaneously, intraperitoneally, or microinjected into specific brain areas at different times. Experimental data show that the hypotensive effects of melatonin depend on the experimental animal model, blood pressure measurement technique, and the route, time and duration of melatonin administration. The hypotensive effects of melatonin may be mediated through specific membrane G-coupled receptors located in the heart and arteries. Due to melatonin's lipophilic nature, its potential hypotensive effects can interfere with various regulatory mechanisms, such as nitric oxide and reactive oxygen species production and activation of the autonomic nervous and circadian systems. Based on the research conducted on rats, the cardiovascular effects of melatonin are modulatory, delayed, and indirect.
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Ge W, Duan H, Zeng J, Zhao X, Li J, Hu J. Melatonin protects sheep endometrial epithelial cells against lipopolysaccharide-induced inflammation in vitro. Reprod Domest Anim 2022; 57:1602-1614. [PMID: 36018566 DOI: 10.1111/rda.14237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/17/2022] [Accepted: 08/24/2022] [Indexed: 11/28/2022]
Abstract
Melatonin has known anti-inflammatory effects. However, how melatonin protects sheep endometrial epithelial cells from inflammation remains unknown. In this study, we investigated the melatonin synthetase AANAT and HIOMT, and melatonin membrane receptors MT1 and MT2 distribution in sheep uterus. Using lipopolysaccharide (LPS)-stimulated sheep endometrial epithelial cells as an in vitro inflammation model. The results showed that melatonin attenuated the expression of inflammatory factors in a concentration-response manner. Melatonin also inhibited the LPS-stimulated phosphorylation of ERK1/2, JNK and NF-κB p65. This attenuation was partially blocked by luzindole (a nonspecific MT1 and MT2 inhibitor) or 4P-PDOT (specific MT2 inhibitor). In addition, the above inhibition of melatonin was abolished by the PI3K/AKT pathway inhibitor LY294002. It was concluded that melatonin had an inhibitory effect on LPS-induced endometrial epithelial cell inflammation in sheep, which was mediated by the activation of the PI3K/AKT pathway via melatonin receptors.
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Affiliation(s)
- Wenbo Ge
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Hongwei Duan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Jianling Zeng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Xingxu Zhao
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
| | - Jianyong Li
- Key Lab of New Animal Drug Project of Gansu Province, Key Lab of Veterinary Pharmaceutical Development of Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Science of Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Junjie Hu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, China
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12
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Liu R, Luo X, Li J, Lei Y, Zeng F, Huang X, Lan Y, Yang F. Melatonin: A window into the organ-protective effects of sepsis. Biomed Pharmacother 2022; 154:113556. [PMID: 35994818 DOI: 10.1016/j.biopha.2022.113556] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/22/2022] [Accepted: 08/14/2022] [Indexed: 11/02/2022] Open
Abstract
Sepsis is an uncontrolled host response to infection. In some cases, it progresses to multi-organ insufficiency, leading to septic shock and increased risk of mortality. Various organ support strategies are currently applied clinically, but they are still inadequate in terms of reducing mortality. Melatonin is a hormone that regulates sleep and wakefulness, and it is associated with a reduced risk of death in patients with sepsis. Evidence suggests that melatonin may help protect organ function from sepsis-related damage. Here, we review information related to the role of melatonin in protecting organ function during sepsis and explore its potential clinical applications, with the aim of providing an effective therapeutic strategy for treating sepsis-induced organ insufficiency.
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Affiliation(s)
- Rongan Liu
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiaoxiu Luo
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jiajia Li
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yu Lei
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Fan Zeng
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiaobo Huang
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yunping Lan
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
| | - Fuxun Yang
- Department of ICU, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
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13
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Nikolaev G, Robeva R, Konakchieva R. Membrane Melatonin Receptors Activated Cell Signaling in Physiology and Disease. Int J Mol Sci 2021; 23:ijms23010471. [PMID: 35008896 PMCID: PMC8745360 DOI: 10.3390/ijms23010471] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/28/2021] [Accepted: 12/29/2021] [Indexed: 02/07/2023] Open
Abstract
The pineal hormone melatonin has attracted great scientific interest since its discovery in 1958. Despite the enormous number of basic and clinical studies the exact role of melatonin in respect to human physiology remains elusive. In humans, two high-affinity receptors for melatonin, MT1 and MT2, belonging to the family of G protein-coupled receptors (GPCRs) have been cloned and identified. The two receptor types activate Gi proteins and MT2 couples additionally to Gq proteins to modulate intracellular events. The individual effects of MT1 and MT2 receptor activation in a variety of cells are complemented by their ability to form homo- and heterodimers, the functional relevance of which is yet to be confirmed. Recently, several melatonin receptor genetic polymorphisms were discovered and implicated in pathology-for instance in type 2 diabetes, autoimmune disease, and cancer. The circadian patterns of melatonin secretion, its pleiotropic effects depending on cell type and condition, and the already demonstrated cross-talks of melatonin receptors with other signal transduction pathways further contribute to the perplexity of research on the role of the pineal hormone in humans. In this review we try to summarize the current knowledge on the membrane melatonin receptor activated cell signaling in physiology and pathology and their relevance to certain disease conditions including cancer.
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Affiliation(s)
- Georgi Nikolaev
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1504 Sofia, Bulgaria;
- Correspondence:
| | - Ralitsa Robeva
- Department of Endocrinology, Faculty of Medicine, Medical University, 1431 Sofia, Bulgaria;
| | - Rossitza Konakchieva
- Faculty of Biology, Sofia University “St. Kliment Ohridski”, 1504 Sofia, Bulgaria;
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14
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Sua-Cespedes CD, David DD, Souto-Neto JA, Lima OG, Moraes MN, de Assis LVM, Castrucci AMDL. Low Temperature Effect on the Endocrine and Circadian Systems of Adult Danio rerio. Front Physiol 2021; 12:707067. [PMID: 34899364 PMCID: PMC8652057 DOI: 10.3389/fphys.2021.707067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 10/19/2021] [Indexed: 11/23/2022] Open
Abstract
The control of the biological rhythms begins with the activation of photo- and thermosensitive cells located in various organs of the fish such as brain, eye, and skin, but a central clock is still to be identified in teleosts. Thermal changes are stressors which increase cortisol and affect the rhythm of other hormones such as melatonin and growth hormone (GH), in both endo- and ectothermic organisms. Our aim was to investigate how temperature (23°C for 6 days) lower than the optimal (28°C) modulates expression of several gene pathways including growth hormone (gh1) and its receptors (ghra, ghrb), insulin-like growth factor1 (igf1a, igf1b) and its receptors (igf1ra, igf1rb), cortisol and its receptor (gr), the limiting enzyme of melatonin synthesis (arylalkylamine N-acetyltransferase, aanat) and melatonin receptors (mtnr1aa, mtnr1bb), as well as their relationship with clock genes in Danio rerio in early light and early dark phases of the day. Lower temperature reduced the expression of the hormone gene gh1, and of the related receptors ghra, ghrb, igf1ra, and igf1rb. Cortisol levels were higher at the lower temperature, with a decrease of its receptor (gr) transcripts in the liver. Interestingly, we found higher levels of aanat transcripts in the brain at 23°C. Overall, lower temperature downregulated the transcription of hormone related genes and clock genes. The results suggest a strong correlation of temperature challenge with the clock molecular mechanism and the endocrine systems analyzed, especially the growth hormone and melatonin axes, in D. rerio tissues.
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Affiliation(s)
- Cristhian D Sua-Cespedes
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Daniela Dantas David
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - José A Souto-Neto
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Otoniel Gonçalves Lima
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Maria Nathália Moraes
- Laboratory of Neurobiology, Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Leonardo V Monteiro de Assis
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.,Center of Brain, Behavior and Metabolism, Institute of Neurobiology, Lübeck University, Lübeck, Germany
| | - Ana Maria de Lauro Castrucci
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.,Department of Biology, University of Virginia, Charlottesville, VA, United States
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15
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Sion B, Bégou M. Can chronopharmacology improve the therapeutic management of neurological diseases? Fundam Clin Pharmacol 2021; 35:564-581. [PMID: 33539566 DOI: 10.1111/fcp.12659] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 01/04/2021] [Accepted: 02/01/2021] [Indexed: 12/19/2022]
Abstract
The importance of circadian rhythm dysfunctions in the pathophysiology of neurological diseases has been highlighted recently. Chronopharmacology principles imply that tailoring the timing of treatments to the circadian rhythm of individual patients could optimize therapeutic management. According to these principles, chronopharmacology takes into account the individual differences in patients' clocks, the rhythmic changes in the organism sensitivity to therapeutic and side effects of drugs, and the predictable time variations of disease. This review examines the current literature on chronopharmacology of neurological diseases focusing its scope on epilepsy, Alzheimer and Parkinson diseases, and neuropathic pain, even if other neurological diseases could have been analyzed. While the results of the studies discussed in this review point to a potential therapeutic benefit of chronopharmacology in neurological diseases, the field is still in its infancy. Studies including a sufficiently large number of patients and measuring gold standard markers of the circadian rhythmicity are still needed to evaluate the beneficial effect of administration times over the 24-hour day but also of clock modulating drugs.
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Affiliation(s)
- Benoit Sion
- Université Clermont Auvergne, INSERM U1107, NEURO-DOL, Clermont-Ferrand, France
| | - Mélina Bégou
- Université Clermont Auvergne, INSERM U1107, NEURO-DOL, Clermont-Ferrand, France
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16
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Dana PM, Sadoughi F, Mobini M, Shafabakhsh R, Chaichian S, Moazzami B, Chamani M, Asemi Z. Molecular and Biological Functions of Melatonin in Endometrial Cancer. Curr Drug Targets 2020; 21:519-526. [DOI: 10.2174/1389450120666190927123746] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/01/2019] [Accepted: 09/12/2019] [Indexed: 12/15/2022]
Abstract
Endometrial cancer is the fifth leading cancer among women. This rate is higher in developed countries and its incidence is increasing worldwide. Diabetes mellitus, obesity, hypertension and arteriosclerosis are major risk factors for endometrial cancer. Melatonin is a hormone synthesized in the pineal and extra-pineal organs such as the digestive tract, bone marrow, retina and more. Evidence shows the potential effects of melatonin in endometrial cancer inhibition. Therefore, the focus of this paper is to review this outstanding evidence and to summarize the molecular and biological mechanisms of melatonin for the inhibition of endometrial cancer.
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Affiliation(s)
- Parisa Maleki Dana
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Fatemeh Sadoughi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Moein Mobini
- Faculty of Kinesiology, University of Calgary, Calgary, AB, Canada
| | - Rana Shafabakhsh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Shala Chaichian
- Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Bahram Moazzami
- Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Chamani
- Department of Gynecology and Obstetrics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
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17
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Kim SW, Kim S, Son M, Cheon JH, Park YS. Melatonin controls microbiota in colitis by goblet cell differentiation and antimicrobial peptide production through Toll-like receptor 4 signalling. Sci Rep 2020; 10:2232. [PMID: 32042047 PMCID: PMC7010660 DOI: 10.1038/s41598-020-59314-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/14/2020] [Indexed: 12/12/2022] Open
Abstract
Microbial dysbiosis has long been postulated to be associated with the pathogenesis of inflammatory bowel disease (IBD). Although evidence supporting the anti-colitic effects of melatonin have been accumulating, it is not clear how melatonin affects the microbiota. Herein, we investigated the effects of melatonin on the microbiome in colitis and identified involvement of Toll-like receptor (TLR) 4 signalling in the effects. Melatonin improved dextran sulfate sodium (DSS)-induced colitis and reverted microbial dysbiosis in wild-type (WT) mice but not in TLR4 knockout (KO) mice. Induction of goblet cells was observed with melatonin administration, which was accompanied by suppression of Il1b and Il17a and induction of melatonin receptor and Reg3β, an antimicrobial peptide (AMP) against Gram-negative bacteria. In vitro, melatonin treatment of HT-29 intestinal epithelial cells promotes mucin and wound healing and inhibits growth of Escherichia coli. Herein, we showed that melatonin significantly increases goblet cells, Reg3β, and the ratio of Firmicutes to Bacteriodetes by suppressing Gram-negative bacteria through TLR4 signalling. Our study suggests that sensing of bacteria through TLR4 and regulation of bacteria through altered goblet cells and AMPs is involved in the anti-colitic effects of melatonin. Melatonin may have use in therapeutics for IBD.
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Affiliation(s)
- Seung Won Kim
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Soochan Kim
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Mijeong Son
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Hee Cheon
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, Korea.,Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Young Sook Park
- Department of Internal Medicine, Eulji Hospital, Eulji University School of Medicine, Seoul, Korea.
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18
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Abstract
For many years now a treatment mitigating the debilitating effects of jet lag has been sought. Rapid travel across time zones leads, in most people, to temporary symptoms, in particular poor sleep, daytime alertness and poor performance. Mis-timed circadian rhythms are considered to be the main factor underlying jet-lag symptoms, together with the sleep deprivation from long haul flights. Virtually all aspects of physiology are rhythmic, from cells to systems, and circadian rhythms are coordinated by a central pacemaker or clock in the suprachiasmatic nucleus (SCN) of the hypothalamus. The SCN adapts slowly to changes in time zone, and peripheral clocks or oscillators adapt at different rates, such that the organism is in a state of desynchrony from the external environment and internally. Light exposure is the main factor controlling the circadian system and needs to be considered together with any pharmacological interventions. This review covers the relatively new chronobiotic drugs, which can hasten adaptation of the circadian system, together with drugs directly affecting alertness and sleep propensity. No current treatment can instantly shift circadian phase to a new time zone; however, adaptation can be hastened. The melatoninergic drugs are promising but larger trials in real-life situations are needed. For short stopovers it is recommended to preserve sleep and alertness without necessarily modifying the circadian system. New research suggests that modification of clock function via genetic manipulation may one day have clinical applications.
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Affiliation(s)
- Josephine Arendt
- Faculty of Health and Medical Sciences (FHMS), University of Surrey, Guildford, Surrey, GU2 7XH, UK.
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19
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Mohammadi F, Shakiba S, Mehrzadi S, Afshari K, Rahimnia AH, Dehpour AR. Anticonvulsant effect of melatonin through ATP‐sensitive channels in mice. Fundam Clin Pharmacol 2019; 34:148-155. [DOI: 10.1111/fcp.12490] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 05/07/2019] [Accepted: 06/11/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Fatemeh Mohammadi
- Brain and Spinal Cord Injury Research Center Neuroscience Institute Tehran University of Medical Sciences Tehran Iran
| | - Saeed Shakiba
- Brain and Spinal Cord Injury Research Center Neuroscience Institute Tehran University of Medical Sciences Tehran Iran
- Experimental Medicine Research Center Tehran University of Medical Sciences Tehran Iran
- Department of Pharmacology School of Medicine Tehran University of Medical Sciences Tehran Iran
| | - Saeed Mehrzadi
- Razi Drug Research Center Iran University of Medical Sciences Shahid Hemmat Highway Tehran 1449614535 Iran
| | - Khashayar Afshari
- Brain and Spinal Cord Injury Research Center Neuroscience Institute Tehran University of Medical Sciences Tehran Iran
- Experimental Medicine Research Center Tehran University of Medical Sciences Tehran Iran
- Department of Pharmacology School of Medicine Tehran University of Medical Sciences Tehran Iran
| | - Amir Hossein Rahimnia
- Brain and Spinal Cord Injury Research Center Neuroscience Institute Tehran University of Medical Sciences Tehran Iran
- Experimental Medicine Research Center Tehran University of Medical Sciences Tehran Iran
- Department of Pharmacology School of Medicine Tehran University of Medical Sciences Tehran Iran
| | - Ahmad Reza Dehpour
- Brain and Spinal Cord Injury Research Center Neuroscience Institute Tehran University of Medical Sciences Tehran Iran
- Experimental Medicine Research Center Tehran University of Medical Sciences Tehran Iran
- Department of Pharmacology School of Medicine Tehran University of Medical Sciences Tehran Iran
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20
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Melatonin in Alzheimer’s Disease: A Latent Endogenous Regulator of Neurogenesis to Mitigate Alzheimer’s Neuropathology. Mol Neurobiol 2019; 56:8255-8276. [DOI: 10.1007/s12035-019-01660-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 12/15/2022]
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21
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Nishimon S, Nishimon M, Nishino S. Tasimelteon for treating non-24-h sleep-wake rhythm disorder. Expert Opin Pharmacother 2019; 20:1065-1073. [DOI: 10.1080/14656566.2019.1603293] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Shohei Nishimon
- Sleep and Circadian Neurobiology Laboratory, Psychiatry and Behavior Sciences, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Mari Nishimon
- Sleep and Circadian Neurobiology Laboratory, Psychiatry and Behavior Sciences, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Seiji Nishino
- Sleep and Circadian Neurobiology Laboratory, Psychiatry and Behavior Sciences, Stanford University School of Medicine, Palo Alto, CA, USA
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22
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McCarthy R, Jungheim ES, Fay JC, Bates K, Herzog ED, England SK. Riding the Rhythm of Melatonin Through Pregnancy to Deliver on Time. Front Endocrinol (Lausanne) 2019; 10:616. [PMID: 31572299 PMCID: PMC6753220 DOI: 10.3389/fendo.2019.00616] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 08/27/2019] [Indexed: 12/15/2022] Open
Abstract
Pregnancy is influenced by the circadian ("circa" or approximately; diēm or day) system, which coordinates physiology and behavior with predictable daily changes in the environment such as light/dark cycles. For example, most species deliver around a particular time of day. In mammals, circadian rhythms are controlled by the master circadian pacemaker, the suprachiasmatic nucleus. One key way that the suprachiasmatic nucleus coordinates circadian rhythms throughout the body is by regulating production of the sleep-promoting hormone melatonin. Serum melatonin concentration, which peaks at night and is suppressed during the day, is one of the best biological indicators of circadian timing. Circadian misalignment causes maternal disturbances in the temporal organization of many physiological processes including melatonin synthesis, and these disturbances of the circadian system have been linked to an increased risk for pregnancy complications. Here, we review evidence that melatonin helps regulate the maternal and fetal circadian systems and the timing of birth. Finally, we discuss the potential for melatonin-based therapeutic strategies to alleviate poor pregnancy outcomes such as preeclampsia and preterm birth.
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Affiliation(s)
- Ronald McCarthy
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, United States
| | - Emily S. Jungheim
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, United States
| | - Justin C. Fay
- Department of Biology, University of Rochester, Rochester, NY, United States
| | - Keenan Bates
- Department of Biology, Washington University, St. Louis, MO, United States
| | - Erik D. Herzog
- Department of Biology, Washington University, St. Louis, MO, United States
| | - Sarah K. England
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, United States
- *Correspondence: Sarah K. England
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23
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de Souza BR, de Almeida Chuffa LG, Simão VA, Camargo ICC. Histopathological changes in androgenized ovaries are recovered by melatonin treatment. Int J Exp Pathol 2018; 99:158-171. [PMID: 30256483 PMCID: PMC6157297 DOI: 10.1111/iep.12283] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/22/2018] [Accepted: 07/07/2018] [Indexed: 12/21/2022] Open
Abstract
Nandrolone decanoate (ND) is a synthetic steroid, which promotes adverse effects on the ovarian tissue, and melatonin (MLT) exhibits a number of beneficial properties in the reproductive system. This study evaluated the general features of the ovarian tissue and the immunoexpression of sex steroid receptors in ND-treated rats that were submitted to short-term melatonin treatment. Adult rats received mineral oil (control group) and ND at doses of 7.5 mg/kg for 15 days (ND-treated group). The treatment with MLT (10mg/kg for 7 days) was given alone, before or in combination with ND. All ND-treated animals showed persistent dioestrus. In the androgenized groups that received MLT, ovarian morphology and size, and the number/area of corpora lutea were recovered. The number of healthy and atretic follicles was recovered when MLT was administered prior to ND; this was similar to the ovaries of control and MLT groups. There was a decrease in estrogen receptors immunostaining in the follicles of androgenized rats that were treated with MLT, and pretreatment with MLT reduced the expression of androgen receptor in atretic follicles and corpora lutea, when compared with ND-treated group. We conclude that MLT treatment recovered the histopathological aspects of the androgenized ovaries, and MLT pretreatment was the most effective.
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Affiliation(s)
- Bianca R. de Souza
- Programa de Pós‐Graduação em BiociênciasDepartamento de BiotecnologiaUniversidade Estadual Paulista – UNESPAssisSão PauloBrazil
| | | | - Vinícius Augusto Simão
- Programa de Pós‐Graduação em BiociênciasDepartamento de BiotecnologiaUniversidade Estadual Paulista – UNESPAssisSão PauloBrazil
| | - Isabel C. C. Camargo
- Departamento de BiotecnologiaFaculdade de Ciências e LetrasUniversidade Estadual Paulista – UNESPAssisSão PauloBrazil
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24
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Talpur HS, Chandio IB, Brohi RD, Worku T, Rehman Z, Bhattarai D, Ullah F, JiaJia L, Yang L. Research progress on the role of melatonin and its receptors in animal reproduction: A comprehensive review. Reprod Domest Anim 2018; 53:831-849. [PMID: 29663591 DOI: 10.1111/rda.13188] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 03/03/2018] [Indexed: 12/15/2022]
Abstract
Melatonin and its receptors play a crucial role in the regulation of the animal reproductive process, primarily in follicular development. However, the role that melatonin performs in regulating hormones related with reproduction remains unclear. Melatonin and its receptors are present both in female and male animals' organs, such as ovaries, heart, brain and liver. Melatonin regulates ovarian actions and is a key mediator of reproductive actions. Melatonin has numerous effects on animal reproduction, such as protection of gametes and embryos, response to clock genes, immune-neuroendocrine, reconciliation of seasonal variations in immune function, and silence or blockage of genes. The growth ratio of reproductive illnesses in animals has raised a remarkable concern for the government, animal caretakers and farm managers. In order to resolve this challenging issue, it is very necessary to conduct state-of-the-art research on melatonin and its receptors because melatonin has considerable physiognomies. This review article presents a current contemporary research conducted by numerous researchers from the entire world on the role of melatonin and its receptors in animal reproduction, from the year 1985 to the year 2017. Furthermore, this review shows scientific research challenges related to melatonin receptors and their explanations based on the findings of 172 numerous research articles, and also represents significant proficiencies of melatonin in order to show enthusiastic study direction for animal reproduction researchers.
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Affiliation(s)
- H S Talpur
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
| | - I B Chandio
- Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand, Pakistan
| | - R D Brohi
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
| | - T Worku
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
| | - Z Rehman
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
| | - D Bhattarai
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
| | - F Ullah
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
| | - L JiaJia
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
| | - L Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, Huazhong Agricultural University, Wuhan, China
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Cruz-Aguilar MA, Ramírez-Salado I, Guevara MA, Hernández-González M, Benitez-King G. Melatonin Effects on EEG Activity During Sleep Onset in Mild-to-Moderate Alzheimer's Disease: A Pilot Study. J Alzheimers Dis Rep 2018; 2:55-65. [PMID: 30480249 PMCID: PMC6159690 DOI: 10.3233/adr-170019] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2018] [Indexed: 11/21/2022] Open
Abstract
There is evidence demonstrating that 5-mg of fast-release melatonin significantly reduces nocturnal sleep onset in patients with mild-to-moderate Alzheimer's disease (AD). However, the physiological mechanism that could promote sleep installation by melatonin in patients with AD is still poorly understood. The present pilot study was designed to analyze the effects of melatonin on cortical activity during the sleep onset period (SOP) in eight mild-to-moderate AD patients treated with 5-mg of fast-release melatonin. Electroencephalographic recordings were obtained from C3-A1, C4-A2, F7-T3, F8-T4, F3-F4, and O1-O2. The relative power (RP), interhemispheric, intrahemispheric, and fronto-posterior correlations of six electroencephalographic bands were calculated and compared between two conditions: placebo and melatonin. Results show that at F7-T3, F3-F4, and C3-A1, melatonin induced an increase of the RP of the delta band. Likewise, in F7-T3, melatonin induced a decrease of the RP in the alpha1 band. Similarly, results show a lower interhemispheric correlation between the F7-T3 and F8-T4 derivations in the alpha1 band compared to the placebo condition. We conclude that the short sleep onset related to melatonin intake in AD patients was associated with a lower RP of the alpha1, a higher RP of the delta band (mainly in the left hemisphere) and a decreased interhemispheric EEG coupling in the alpha1 band. The possible role of the GABAergic neurotransmission as well as of the cascade of neurochemical events that melatonin triggers on sleep onset are discussed.
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Affiliation(s)
- Manuel Alejandro Cruz-Aguilar
- Universidad de Guadalajara, Instituto de Neurociencias, CUCBA, Laboratorio de Correlación Electroencefalográfica y Conducta, Guadalajara, Jalisco, México
- Instituto Nacional de Psiquiatría “Ramón de la Fuente Muñiz”, Dirección de Investigaciones en Neurociencias, Laboratorio de Cronobiología y Sueño, CDMX, México
| | - Ignacio Ramírez-Salado
- Instituto Nacional de Psiquiatría “Ramón de la Fuente Muñiz”, Dirección de Investigaciones en Neurociencias, Laboratorio de Cronobiología y Sueño, CDMX, México
| | - Miguel Angel Guevara
- Universidad de Guadalajara, Instituto de Neurociencias, CUCBA, Laboratorio de Correlación Electroencefalográfica y Conducta, Guadalajara, Jalisco, México
| | - Marisela Hernández-González
- Universidad de Guadalajara, Instituto de Neurociencias, CUCBA, Laboratorio de Neurofisiología de la Conducta Reproductiva, Guadalajara, Jalisco, México
| | - Gloria Benitez-King
- Instituto Nacional de Psiquiatría “Ramón de la Fuente Muñiz”, Subdirección de Investigaciones Clínicas, Laboratorio de Neurofarmacología, CDMX, México
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26
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Goldman SE, Alder ML, Burgess HJ, Corbett BA, Hundley R, Wofford D, Fawkes DB, Wang L, Laudenslager ML, Malow BA. Characterizing Sleep in Adolescents and Adults with Autism Spectrum Disorders. J Autism Dev Disord 2017; 47:1682-1695. [PMID: 28286917 DOI: 10.1007/s10803-017-3089-1] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We studied 28 adolescents/young adults with autism spectrum disorders (ASD) and 13 age/sex matched individuals of typical development (TD). Structured sleep histories, validated questionnaires, actigraphy (4 weeks), and salivary cortisol and melatonin (4 days each) were collected. Compared to those with TD, adolescents/young adults with ASD had longer sleep latencies and more difficulty going to bed and falling asleep. Morning cortisol, evening cortisol, and the morning-evening difference in cortisol did not differ by diagnosis (ASD vs. TD). Dim light melatonin onsets (DLMOs) averaged across participants were not different for the ASD and TD participants. Average participant scores indicated aspects of poor sleep hygiene in both groups. Insomnia in ASD is multifactorial and not solely related to physiological factors.
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Affiliation(s)
- S E Goldman
- Sleep Disorders Division, Department of Neurology, Vanderbilt University School of Medicine, 1161 21st Avenue South, Room A-0116, Nashville, TN, 37232-2551, USA
| | - M L Alder
- Sleep Disorders Division, Department of Neurology, Vanderbilt University School of Medicine, 1161 21st Avenue South, Room A-0116, Nashville, TN, 37232-2551, USA
| | - H J Burgess
- Departments of Behavioral Sciences & Internal Medicine, Rush University Medical Center, Chicago, USA
| | - B A Corbett
- Department of Psychiatry and Kennedy Center, Vanderbilt University School of Medicine, Nashville, USA
| | - R Hundley
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, USA
| | - D Wofford
- Sleep Disorders Division, Department of Neurology, Vanderbilt University School of Medicine, 1161 21st Avenue South, Room A-0116, Nashville, TN, 37232-2551, USA
| | - D B Fawkes
- Sleep Disorders Division, Department of Neurology, Vanderbilt University School of Medicine, 1161 21st Avenue South, Room A-0116, Nashville, TN, 37232-2551, USA
| | - L Wang
- Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, USA
| | - M L Laudenslager
- Behavioral Immunology and Endocrinology Laboratory, Department of Psychiatry, University of Colorado Anschutz Medical Campus, Denver, CO, USA
| | - B A Malow
- Sleep Disorders Division, Department of Neurology, Vanderbilt University School of Medicine, 1161 21st Avenue South, Room A-0116, Nashville, TN, 37232-2551, USA.
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27
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Zahoor I, de Koning DJ, Hocking PM. Transcriptional profile of breast muscle in heat stressed layers is similar to that of broiler chickens at control temperature. Genet Sel Evol 2017; 49:69. [PMID: 28931372 PMCID: PMC5607596 DOI: 10.1186/s12711-017-0346-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 08/31/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND In recent years, the commercial importance of changes in muscle function of broiler chickens and of the corresponding effects on meat quality has increased. Furthermore, broilers are more sensitive to heat stress during transport and at high ambient temperatures than smaller egg-laying chickens. We hypothesised that heat stress would amplify muscle damage and expression of genes that are involved in such changes and, thus, lead to the identification of pathways and networks associated with broiler muscle and meat quality traits. Broiler and layer chickens were exposed to control or high ambient temperatures to characterise differences in gene expression between the two genotypes and the two environments. RESULTS Whole-genome expression studies in breast muscles of broiler and layer chickens were conducted before and after heat stress; 2213 differentially-expressed genes were detected based on a significant (P < 0.05) genotype × treatment interaction. This gene set was analysed with the BioLayout Express3D and Ingenuity Pathway Analysis software and relevant biological pathways and networks were identified. Genes involved in functions related to inflammatory reactions, cell death, oxidative stress and tissue damage were upregulated in control broilers compared with control and heat-stressed layers. Expression of these genes was further increased in heat-stressed broilers. CONCLUSIONS Differences in gene expression between broiler and layer chickens under control and heat stress conditions suggest that damage of breast muscles in broilers at normal ambient temperatures is similar to that in heat-stressed layers and is amplified when broilers are exposed to heat stress. The patterns of gene expression of the two genotypes under heat stress were almost the polar opposite of each other, which is consistent with the conclusion that broiler chickens were not able to cope with heat stress by dissipating their body heat. The differentially expressed gene networks and pathways were consistent with the pathological changes that are observed in the breast muscle of heat-stressed broilers.
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Affiliation(s)
- Imran Zahoor
- Division of Genetics and Genomics, Roslin Institute and R(D)SVS, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.,Department of Animal Breeding and Genetics, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | - Dirk-Jan de Koning
- Division of Genetics and Genomics, Roslin Institute and R(D)SVS, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.,Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, 750 07, Uppsala, Sweden
| | - Paul M Hocking
- Division of Genetics and Genomics, Roslin Institute and R(D)SVS, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, UK.
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28
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Lo Sardo F, Muti P, Blandino G, Strano S. Melatonin and Hippo Pathway: Is There Existing Cross-Talk? Int J Mol Sci 2017; 18:ijms18091913. [PMID: 28878191 PMCID: PMC5618562 DOI: 10.3390/ijms18091913] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 12/16/2022] Open
Abstract
Melatonin is an indolic hormone that regulates a plethora of functions ranging from the regulation of circadian rhythms and antioxidant properties to the induction and maintenance of tumor suppressor pathways. It binds to specific receptors as well as to some cytosolic proteins, leading to several cellular signaling cascades. Recently, the involvement of melatonin in cancer insurgence and progression has clearly been demonstrated. In this review, we will first describe the structure and functions of melatonin and its receptors, and then discuss both molecular and epidemiological evidence on melatonin anticancer effects. Finally, we will shed light on potential cross-talk between melatonin signaling and the Hippo signaling pathway, along with the possible implications for cancer therapy.
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Affiliation(s)
- Federica Lo Sardo
- Oncogenomic and Epigenetic Unit, Molecular Chemoprevention Group, Department of Research, Diagnosis and Innovative Technologies, Translational Research Area, Regina Elena National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy.
| | - Paola Muti
- Department of Oncology, Juravinski Cancer Center, McMaster University, Hamilton, ON L8S 4L8, Canada.
| | - Giovanni Blandino
- Oncogenomic and Epigenetic Unit, Molecular Chemoprevention Group, Department of Research, Diagnosis and Innovative Technologies, Translational Research Area, Regina Elena National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy.
| | - Sabrina Strano
- Oncogenomic and Epigenetic Unit, Molecular Chemoprevention Group, Department of Research, Diagnosis and Innovative Technologies, Translational Research Area, Regina Elena National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy.
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29
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Yeh CM, Su SC, Lin CW, Yang WE, Chien MH, Reiter RJ, Yang SF. Melatonin as a potential inhibitory agent in head and neck cancer. Oncotarget 2017; 8:90545-90556. [PMID: 29163852 PMCID: PMC5685773 DOI: 10.18632/oncotarget.20079] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 07/26/2017] [Indexed: 12/29/2022] Open
Abstract
Melatonin is a molecule secreted by the pineal gland; it is an important regulator of sleep and circadian rhythms. Through multiple interrelated mechanisms, melatonin exhibits various inhibitory properties at different stages of tumor progression. Many studies have explored the oncostatic effects of melatonin on hormone-dependent tumors. In this review, we highlight recent advances in understanding the effects of melatonin on the development of head and neck cancers, including molecular mechanisms identified through experimental and clinical observations. Because melatonin exerts a wide range of effects, melatonin may influence many mechanisms that influence the development of cancer. These include cell proliferation, apoptosis, angiogenesis, extracellular matrix remodeling through matrix metalloproteinases, and genetic polymorphism. Thus, the evidence discussed in this article will serve as a basis for basic and clinical research to promote the use of melatonin for understanding and controlling the development of head and neck cancers.
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Affiliation(s)
- Chia-Ming Yeh
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Shih-Chi Su
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan.,Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Wei-En Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Ming-Hsien Chien
- Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei, Taiwan
| | - Russel J Reiter
- Department of Cellular and Structural Biology, The University of Texas Health Science Center, San Antonio, TX, USA
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
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30
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Shukla M, Govitrapong P, Boontem P, Reiter RJ, Satayavivad J. Mechanisms of Melatonin in Alleviating Alzheimer's Disease. Curr Neuropharmacol 2017; 15:1010-1031. [PMID: 28294066 PMCID: PMC5652010 DOI: 10.2174/1570159x15666170313123454] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 02/10/2017] [Accepted: 03/09/2017] [Indexed: 02/07/2023] Open
Abstract
Alzheimer's disease (AD) is a chronic, progressive and prevalent neurodegenerative disease characterized by the loss of higher cognitive functions and an associated loss of memory. The thus far "incurable" stigma for AD prevails because of variations in the success rates of different treatment protocols in animal and human studies. Among the classical hypotheses explaining AD pathogenesis, the amyloid hypothesis is currently being targeted for drug development. The underlying concept is to prevent the formation of these neurotoxic peptides which play a central role in AD pathology and trigger a multispectral cascade of neurodegenerative processes post-aggregation. This could possibly be achieved by pharmacological inhibition of β- or γ-secretase or stimulating the nonamyloidogenic α-secretase. Melatonin the pineal hormone is a multifunctioning indoleamine. Production of this amphiphilic molecule diminishes with advancing age and this decrease runs parallel with the progression of AD which itself explains the potential benefits of melatonin in line of development and devastating consequences of the disease progression. Our recent studies have revealed a novel mechanism by which melatonin stimulates the nonamyloidogenic processing and inhibits the amyloidogenic processing of β-amyloid precursor protein (βAPP) by stimulating α -secretases and consequently down regulating both β- and γ-secretases at the transcriptional level. In this review, we discuss and evaluate the neuroprotective functions of melatonin in AD pathogenesis, including its role in the classical hypotheses in cellular and animal models and clinical interventions in AD patients, and suggest that with early detection, melatonin treatment is qualified to be an anti-AD therapy.
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Affiliation(s)
- Mayuri Shukla
- Chulabhorn Graduate Institute, Chulabhorn Royal Academy, 54 Kamphaeng Phet 6 Road, Lak Si, Bangkok10210, Thailand
| | - Piyarat Govitrapong
- Chulabhorn Graduate Institute, Chulabhorn Royal Academy, 54 Kamphaeng Phet 6 Road, Lak Si, Bangkok10210, Thailand
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakornpathom 73170, Thailand
| | - Parichart Boontem
- Chulabhorn Graduate Institute, Chulabhorn Royal Academy, 54 Kamphaeng Phet 6 Road, Lak Si, Bangkok10210, Thailand
| | - Russel J. Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
| | - Jutamaad Satayavivad
- Chulabhorn Research Institute and Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Bangkok10210, Thailand
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31
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Alsiddig MA, Yu SG, Pan ZX, Widaa H, Badri TM, Chen J, Liu HL. Association of single nucleotide polymorphism inmelatonin receptor 1Agene with egg production traits in Yangzhou geese. Anim Genet 2016; 48:245-249. [DOI: 10.1111/age.12517] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2016] [Indexed: 01/20/2023]
Affiliation(s)
- M. A. Alsiddig
- Department of Animal Genetics, Breeding and Reproduction; College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
- Department of Animal Production; College of Agriculture; Alzaiem Alazhari University; 1432 Khartoum North 13311, Sudan
| | - S. G. Yu
- Department of Animal Genetics, Breeding and Reproduction; College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
| | - Z. X. Pan
- Department of Animal Genetics, Breeding and Reproduction; College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
| | - H. Widaa
- Department of Animal Genetics, Breeding and Reproduction; College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
| | - T. M. Badri
- Department of Animal Genetics, Breeding and Reproduction; College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
| | - J. Chen
- Department of Animal Genetics, Breeding and Reproduction; College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
| | - H. L. Liu
- Department of Animal Genetics, Breeding and Reproduction; College of Animal Science and Technology; Nanjing Agricultural University; Nanjing 210095 China
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32
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Legros C, Brasseur C, Delagrange P, Ducrot P, Nosjean O, Boutin JA. Alternative Radioligands for Investigating the Molecular Pharmacology of Melatonin Receptors. J Pharmacol Exp Ther 2016; 356:681-92. [PMID: 26759496 DOI: 10.1124/jpet.115.229989] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 01/11/2016] [Indexed: 12/15/2022] Open
Abstract
Melatonin exerts a variety of physiologic activities that are mainly relayed through the melatonin receptors MT1 and MT2 Low expressions of these receptors in tissues have led to widespread experimental use of the agonist 2-[(125)I]-iodomelatonin as a substitute for melatonin. We describe three iodinated ligands: 2-(2-[(2-iodo-4,5-dimethoxyphenyl)methyl]-4,5-dimethoxy phenyl) (DIV880) and (2-iodo-N-2-[5-methoxy-2-(naphthalen-1-yl)-1H-pyrrolo[3,2-b]pyridine-3-yl])acetamide (S70254), which are specific ligands at MT2 receptors, and N-[2-(5-methoxy-1H-indol-3-yl)ethyl]iodoacetamide (SD6), an analog of 2-[(125)I]-iodomelatonin with slightly different characteristics. Here, we further characterized these new ligands with regards to their molecular pharmacology. We performed binding experiments, saturation assays, association/dissociation rate measurements, and autoradiography using sheep and rat tissues and recombinant cell lines. Our results showed that [(125)I]-S70254 is receptor, and can be used with both cells and tissue. This radioligand can be used in autoradiography. Similarly, DIV880, a partial agonist [43% of melatonin on guanosine 5'-3-O-(thio)triphosphate binding assay], selective for MT2, can be used as a tool to selectively describe the pharmacology of this receptor in tissue samples. The molecular pharmacology of both human melatonin receptors MT1 and MT2, using a series of 24 ligands at these receptors and the new radioligands, did not lead to noticeable variations in the profiles. For the first time, we described radiolabeled tools that are specific for one of the melatonin receptors (MT2). These tools are amenable to binding experiments and to autoradiography using sheep or rat tissues. These specific tools will permit better understanding of the role and implication in physiopathologic processes of the melatonin receptors.
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Affiliation(s)
- Céline Legros
- Pôle d'Expertise Biotechnologie, Chimie, Biologie (C.L., C.B., P.Du., O.N., J.A.B.), and Unité de Recherches et Découvertes en Neurosciences (P.De.), Institut de Recherches SERVIER, Croissy-sur-Seine, France
| | - Chantal Brasseur
- Pôle d'Expertise Biotechnologie, Chimie, Biologie (C.L., C.B., P.Du., O.N., J.A.B.), and Unité de Recherches et Découvertes en Neurosciences (P.De.), Institut de Recherches SERVIER, Croissy-sur-Seine, France
| | - Philippe Delagrange
- Pôle d'Expertise Biotechnologie, Chimie, Biologie (C.L., C.B., P.Du., O.N., J.A.B.), and Unité de Recherches et Découvertes en Neurosciences (P.De.), Institut de Recherches SERVIER, Croissy-sur-Seine, France
| | - Pierre Ducrot
- Pôle d'Expertise Biotechnologie, Chimie, Biologie (C.L., C.B., P.Du., O.N., J.A.B.), and Unité de Recherches et Découvertes en Neurosciences (P.De.), Institut de Recherches SERVIER, Croissy-sur-Seine, France
| | - Olivier Nosjean
- Pôle d'Expertise Biotechnologie, Chimie, Biologie (C.L., C.B., P.Du., O.N., J.A.B.), and Unité de Recherches et Découvertes en Neurosciences (P.De.), Institut de Recherches SERVIER, Croissy-sur-Seine, France
| | - Jean A Boutin
- Pôle d'Expertise Biotechnologie, Chimie, Biologie (C.L., C.B., P.Du., O.N., J.A.B.), and Unité de Recherches et Découvertes en Neurosciences (P.De.), Institut de Recherches SERVIER, Croissy-sur-Seine, France
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Ren DL, Sun AA, Li YJ, Chen M, Ge SC, Hu B. Exogenous melatonin inhibits neutrophil migration through suppression of ERK activation. J Endocrinol 2015; 227:49-60. [PMID: 26303298 DOI: 10.1530/joe-15-0329] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/24/2015] [Indexed: 01/04/2023]
Abstract
Neutrophil migration to inflammatory sites is the fundamental process of innate immunity among organisms against pathogen invasion. As a major sleep adjusting hormone, melatonin has also been proved to be involved in various inflammatory events. This study aimed to evaluate the impact of exogenous melatonin on neutrophil migration to the injury site in live zebrafish and further investigate whether ERK signaling is involved in this process. Using the tail fin transection model, the fluorescently labeled neutrophil was in vivo visualized in transgenic Tg(lyz:EGFP), Tg(lyz:DsRed) zebrafish. We found that exogenous melatonin administration dramatically inhibited the injury-induced neutrophil migration in a dose-dependent and time-dependent manner. The inhibited effect of melatonin on neutrophil migration could be attenuated by melatonin receptor 1, 2, and 3 antagonists. The ERK phosphorylation level was significantly decreased post injury when treated with melatonin. The blocking of ERK activation with inhibitor PD0325901 suppressed the number of migrated neutrophils in response to injury. However, the activation of ERK with the epidermal growth factor could impair the inhibited effect of melatonin on neutrophil migration. We also detected that PD0325901 significantly suppressed the in vivo neutrophils transmigrating over the vessel endothelial cell using the transgenic Tg(flk:EGFP);(lyz:DsRed) line labeled as both vessel and neutrophil. Taking all of these data together, the results indicated that exogenous melatonin had an anti-migratory effect on neutrophils by blocking the ERK phosphorylation signal, and it led to the subsequent adhesion molecule expression. Thus, the crossing of the vessel endothelial cells of neutrophils became difficult.
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Affiliation(s)
- Da-Long Ren
- Chinese Academy of Sciences Key Laboratory of Brain Function and DiseaseSchool of Life Sciences, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui Province 230026, People's Republic of China
| | - Ai-Ai Sun
- Chinese Academy of Sciences Key Laboratory of Brain Function and DiseaseSchool of Life Sciences, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui Province 230026, People's Republic of China
| | - Ya-Juan Li
- Chinese Academy of Sciences Key Laboratory of Brain Function and DiseaseSchool of Life Sciences, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui Province 230026, People's Republic of China
| | - Min Chen
- Chinese Academy of Sciences Key Laboratory of Brain Function and DiseaseSchool of Life Sciences, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui Province 230026, People's Republic of China
| | - Shu-Chao Ge
- Chinese Academy of Sciences Key Laboratory of Brain Function and DiseaseSchool of Life Sciences, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui Province 230026, People's Republic of China
| | - Bing Hu
- Chinese Academy of Sciences Key Laboratory of Brain Function and DiseaseSchool of Life Sciences, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui Province 230026, People's Republic of China
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Genetic variation in melatonin pathway enzymes in children with autism spectrum disorder and comorbid sleep onset delay. J Autism Dev Disord 2015; 45:100-10. [PMID: 25059483 DOI: 10.1007/s10803-014-2197-4] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Sleep disruption is common in individuals with autism spectrum disorder (ASD). Genes whose products regulate endogenous melatonin modify sleep patterns and have been implicated in ASD. Genetic factors likely contribute to comorbid expression of sleep disorders in ASD. We studied a clinically unique ASD subgroup, consisting solely of children with comorbid expression of sleep onset delay. We evaluated variation in two melatonin pathway genes, acetylserotonin O-methyltransferase (ASMT) and cytochrome P450 1A2 (CYP1A2). We observed higher frequencies than currently reported (p < 0.04) for variants evidenced to decrease ASMT expression and related to decreased CYP1A2 enzyme activity (p ≤ 0.0007). We detected a relationship between genotypes in ASMT and CYP1A2 (r(2) = 0.63). Our results indicate that expression of sleep onset delay relates to melatonin pathway genes.
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35
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Phytomelatonin: assisting plants to survive and thrive. Molecules 2015; 20:7396-437. [PMID: 25911967 PMCID: PMC6272735 DOI: 10.3390/molecules20047396] [Citation(s) in RCA: 238] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 03/27/2015] [Accepted: 03/27/2015] [Indexed: 12/15/2022] Open
Abstract
This review summarizes the advances that have been made in terms of the identified functions of melatonin in plants. Melatonin is an endogenously-produced molecule in all plant species that have been investigated. Its concentration in plant organs varies in different tissues, e.g., roots versus leaves, and with their developmental stage. As in animals, the pathway of melatonin synthesis in plants utilizes tryptophan as an essential precursor molecule. Melatonin synthesis is inducible in plants when they are exposed to abiotic stresses (extremes of temperature, toxins, increased soil salinity, drought, etc.) as well as to biotic stresses (fungal infection). Melatonin aids plants in terms of root growth, leaf morphology, chlorophyll preservation and fruit development. There is also evidence that exogenously-applied melatonin improves seed germination, plant growth and crop yield and its application to plant products post-harvest shows that melatonin advances fruit ripening and may improve food quality. Since melatonin was only discovered in plants two decades ago, there is still a great deal to learn about the functional significance of melatonin in plants. It is the hope of the authors that the current review will serve as a stimulus for scientists to join the endeavor of clarifying the function of this phylogenetically-ancient molecule in plants and particularly in reference to the mechanisms by which melatonin mediates its multiple actions.
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36
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Söderquist F, Hellström PM, Cunningham JL. Human gastroenteropancreatic expression of melatonin and its receptors MT1 and MT2. PLoS One 2015; 10:e0120195. [PMID: 25822611 PMCID: PMC4378860 DOI: 10.1371/journal.pone.0120195] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 02/05/2015] [Indexed: 12/29/2022] Open
Abstract
Background and Aim The largest source of melatonin, according to animal studies, is the gastrointestinal (GI) tract but this is not yet thoroughly characterized in humans. This study aims to map the expression of melatonin and its two receptors in human GI tract and pancreas using microarray analysis and immunohistochemistry. Method Gene expression data from normal intestine and pancreas and inflamed colon tissue due to ulcerative colitis were analyzed for expression of enzymes relevant for serotonin and melatonin production and their receptors. Sections from paraffin-embedded normal tissue from 42 individuals, representing the different parts of the GI tract (n=39) and pancreas (n=3) were studied with immunohistochemistry using antibodies with specificity for melatonin, MT1 and MT2 receptors and serotonin. Results Enzymes needed for production of melatonin are expressed in both GI tract and pancreas tissue. Strong melatonin immunoreactivity (IR) was seen in enterochromaffin (EC) cells partially co-localized with serotonin IR. Melatonin IR was also seen in pancreas islets. MT1 and MT2 IR were both found in the intestinal epithelium, in the submucosal and myenteric plexus, and in vessels in the GI tract as well as in pancreatic islets. MT1 and MT2 IR was strongest in the epithelium of the large intestine. In the other cell types, both MT2 gene expression and IR were generally elevated compared to MT1. Strong MT2, IR was noted in EC cells but not MT1 IR. Changes in gene expression that may result in reduced levels of melatonin were seen in relation to inflammation. Conclusion Widespread gastroenteropancreatic expression of melatonin and its receptors in the GI tract and pancreas is in agreement with the multiple roles ascribed to melatonin, which include regulation of gastrointestinal motility, epithelial permeability as well as enteropancreatic cross-talk with plausible impact on metabolic control.
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MESH Headings
- Adult
- Case-Control Studies
- Colitis, Ulcerative/genetics
- Colitis, Ulcerative/metabolism
- Colitis, Ulcerative/pathology
- Enterochromaffin Cells/metabolism
- Gastrointestinal Tract/anatomy & histology
- Gastrointestinal Tract/metabolism
- Gene Expression
- Humans
- Immunohistochemistry
- Melatonin/metabolism
- Pancreas/anatomy & histology
- Pancreas/metabolism
- Receptor, Melatonin, MT1/genetics
- Receptor, Melatonin, MT1/metabolism
- Receptor, Melatonin, MT2/genetics
- Receptor, Melatonin, MT2/metabolism
- Serotonin/metabolism
- Tissue Distribution
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Affiliation(s)
- Fanny Söderquist
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Per M. Hellström
- Department of Medical Sciences, Gastroenterology/Hepatology, Uppsala University, Uppsala, Sweden
| | - Janet L. Cunningham
- Department of Neuroscience, Psychiatry, Uppsala University, Uppsala, Sweden
- * E-mail:
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Jamaluddin JL, Huri HZ, Vethakkan SR, Mustafa N. Pancreatic gene variants potentially associated with dipeptidyl peptidase-4 inhibitor treatment response in Type 2 diabetes. Pharmacogenomics 2015; 15:235-49. [PMID: 24444412 DOI: 10.2217/pgs.13.234] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In the adult pancreas, the expression of the genes PAX4, KCNQ1, TCF7L2, KCNJ11, ABCC8, MTNR1B and WFS1 are mainly restricted to β cells to maintain glucose homeostasis. We have identified these genes as the main regulators of incretin-mediated actions, and therefore they may potentially influence the response of DPP-4 inhibitors. This review represents the first detailed exploration of pancreatic β-cell genes and their variant mechanisms, which could potentially affect the response of DPP-4 inhibitors in Type 2 diabetes. We have focused on the signaling pathways of these genes to understand their roles in gastrointestinal incretin-mediated effects; and finally, we sought to associate gene mechanisms with their Type 2 diabetes risk variants to predict the responses of DPP-4 inhibitors for this disease.
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Affiliation(s)
- Jazlina Liza Jamaluddin
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Belancio VP, Blask DE, Deininger P, Hill SM, Jazwinski SM. The aging clock and circadian control of metabolism and genome stability. Front Genet 2015; 5:455. [PMID: 25642238 PMCID: PMC4294216 DOI: 10.3389/fgene.2014.00455] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 12/11/2014] [Indexed: 11/13/2022] Open
Abstract
It is widely accepted that aging is characterized by a gradual decline in the efficiency and accuracy of biological processes, leading to deterioration of physiological functions and development of age-associated diseases. Age-dependent accumulation of genomic instability and development of metabolic syndrome are well-recognized components of the aging phenotype, both of which have been extensively studied. Existing findings strongly support the view that the integrity of the cellular genome and metabolic function can be influenced by light at night (LAN) and associated suppression of circadian melatonin production. While LAN is reported to accelerate aging by promoting age-associated carcinogenesis in several animal models, the specific molecular mechanism(s) of its action are not fully understood. Here, we review literature supporting a connection between LAN-induced central circadian disruption of peripheral circadian rhythms and clock function, LINE-1 retrotransposon-associated genomic instability, metabolic deregulation, and aging. We propose that aging is a progressive decline in the stability, continuity, and synchronization of multi-frequency oscillations in biological processes to a temporally disorganized state. By extension, healthy aging is the ability to maintain the most consistent, stable, and entrainable rhythmicity and coordination of these oscillations, at the molecular, cellular, and systemic levels.
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Affiliation(s)
- Victoria P Belancio
- Department of Structural and Cellular Biology, Tulane School of Medicine, Tulane University New Orleans, LA, USA ; Tulane Cancer Center, Tulane Center for Aging, and Tulane Center for Circadian Biology New Orleans, LA, USA
| | - David E Blask
- Department of Structural and Cellular Biology, Tulane School of Medicine, Tulane University New Orleans, LA, USA ; Tulane Cancer Center, Tulane Center for Aging, and Tulane Center for Circadian Biology New Orleans, LA, USA
| | - Prescott Deininger
- Tulane Cancer Center, Tulane Center for Aging, and Tulane Center for Circadian Biology New Orleans, LA, USA ; Department of Epidemiology, Tulane University New Orleans, LA, USA
| | - Steven M Hill
- Department of Structural and Cellular Biology, Tulane School of Medicine, Tulane University New Orleans, LA, USA ; Tulane Cancer Center, Tulane Center for Aging, and Tulane Center for Circadian Biology New Orleans, LA, USA
| | - S Michal Jazwinski
- Tulane Cancer Center, Tulane Center for Aging, and Tulane Center for Circadian Biology New Orleans, LA, USA ; Department of Medicine, Tulane University New Orleans, LA, USA
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Ganji R, Nabiuni M, Faraji R. Development of mouse preantral follicle after in vitro culture in a medium containing melatonin. CELL JOURNAL 2015; 16:546-53. [PMID: 25685745 PMCID: PMC4297493 DOI: 10.22074/cellj.2015.499] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Accepted: 12/01/2013] [Indexed: 12/15/2022]
Abstract
Objective Improvements in cancer treatment have allowed more young women to survive. However, many cancer patients suffer from ovarian failure. Cryopreservation is one
of the solutions for fertility restoration in these patients. The cryopreservation of isolated
follicles is a more attractive approach in the long term. Many endocrine and paracrine
factors can stimulate the granulosa cells of preantral follicles to proliferate. Melatonin acts
as direct free radical scavenger and indirect antioxidant. In this study, we investigated the
direct effects of melatonin on follicle development and oocyte maturation by exposing in
vitro cultured mouse vitrified-warmed ovarian follicles to melatonin.
Materials and Methods In an experimental study, preantral follicles with diameter of
150-180 µm were isolated from prepubertal mouse ovaries. Follicles were vitrified and
thawed using cryolock method. They were then cultured individually for 7 days in droplets
supplemented with 0, 10 and 100 pM melatonin, while ovulation was induced using epidermal growth factor (EGF) and human chorionic gonadotropin (hCG). The survival rate of
follicles and nuclear maturation of ovulated oocytes were determined.
Results At the end of culture, significant increases in follicle survival (p<0.001) and in diameter (p<0.05) were noticed in 10 pM melatonin group compared to control group. In the 100
pM group, survival rate was not affected by melatonin. It was revealed that after induction of
ovulation, total number of metaphase II oocytes in treatment groups were not influenced by
melatonin (p>0.05).
Conclusion Culture of mouse vitrified-warmed preantral follicles in a medium supplemented with 10 pM melatonin increased the number of surviving follicles.
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Affiliation(s)
- Roya Ganji
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Mohammad Nabiuni
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Roya Faraji
- Reproductive Health Research Center, Guilan University of Medical Sciences, Guilan, Iran
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Ovais M, Srivastava SK, Sumoona S, Mubashshir M. Evidence for the presence of novel β-melatonin receptors along with classical α-melatonin receptors in the fish Rasbora daniconius (Ham.). J Recept Signal Transduct Res 2014; 35:238-48. [PMID: 25137035 DOI: 10.3109/10799893.2014.951896] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The effects of melatonin (MT) were examined on the isolated scale melanophores from dorso-lateral (D-L) and band regions of a tropical fish Rasbora daniconius. Our study primarily aimed for further depiction of the signaling receptors involved in MT mediated pigment translocations in the fish. Melanophore Size Index (MSI) was employed as a recording parameter for the responses of melanophores to MT and various antagonists. MT has induced aggregation as well as dispersion in D-L region and aggregation in band region melanophores during summer season. During winter, MT-induced responses were only of aggregatory type in D-L region, while in the band region there was an increase in the sensitivity. The responses of the melanophores to MT were reversible. The aggregation of innervated melanophores induced by MT on the D-L and band regions was partially mediated through the neurotransmitters released under the influence of MT and partially by the specific MT receptors. Luzindole and K185 have completely blocked the aggregatory responses of D-L and band region melanophores. Aggregatory receptors may be of the conventional α-MT type. Dispersion of D-L and band region melanophores induced by MT in the presence of various antagonists and on denervated band region could be the result of activation of β-MT receptors of dispersive nature. Presence of α and β MT receptors is thus indicated in this fish melanophores.
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Affiliation(s)
- Mohd Ovais
- a Department of Biosciences , Barkatullah University , Bhopal , Madhya Pradesh , India and
| | | | - Safia Sumoona
- a Department of Biosciences , Barkatullah University , Bhopal , Madhya Pradesh , India and
| | - Muhammad Mubashshir
- b The Sven Loven Centre for Marine Sciences , University of Gothenburg , Fiskebackskil , Sweden
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41
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Expression and putative functions of melatonin receptors in malignant cells and tissues. Wien Med Wochenschr 2014; 164:472-8. [PMID: 25023005 DOI: 10.1007/s10354-014-0289-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 06/10/2014] [Indexed: 01/20/2023]
Abstract
Melatonin, the popular hormone of the darkness, is primarily synthesized in the pineal gland, and acts classically through the G-protein coupled plasma membrane melatonin receptors MT1 and MT2, respectively. Although some of the receptor mediated functions of melatonin, especially those on the (central) circadian system, have been more or less clarified, the functional meaning of MT-receptors in various peripheral organs are still not sufficiently investigated yet. There is, however, accumulating evidence for oncostatic effects of melatonin with both, antioxidative and MT-receptor mediated mechanisms possibly playing a role. This review briefly summarizes the physiology of melatonin and MT-receptors, and discusses the expression and function of MT-receptors in human cancer cells and tissues.
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42
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Legros C, Chesneau D, Boutin JA, Barc C, Malpaux B. Melatonin from cerebrospinal fluid but not from blood reaches sheep cerebral tissues under physiological conditions. J Neuroendocrinol 2014; 26:151-63. [PMID: 24460899 DOI: 10.1111/jne.12134] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 01/15/2014] [Accepted: 01/20/2014] [Indexed: 11/29/2022]
Abstract
The pineal gland secretes melatonin (MLT) that circulates in the blood and cerebrospinal fluid (CSF). We provide data to support the hypothesis that, in sheep and possibly in humans, only the CSF MLT, and not the blood MLT, can provide most of MLT to the cerebral tissue in high concentrations, particularly in the periventricular area. The MLT content of sheep brain, our chosen animal model, was found in significant concentration gradients oriented from the ventricle (close to the CSF) to the cerebral tissue, with concentrations varying by a factor of 1-125. The highest concentrations were observed close to the ventricle wall, whereas the lowest concentrations were furthest from the ventricles (407.0 ± 71.5 pg/ml compared to 84.7 ± 5.2 pg/ml around the third ventricle). This concentration gradient was measured in brain tissue collected at mid-day and at the end of the night. Nocturnal concentrations were higher than daytime concentrations, reflecting the diurnal variation in the pineal gland. The concentration gradient was not detected when MLT was delivered to the brain via the bloodstream. The diffusion of MLT to cerebral tissues via CSF was supported by in vivo scintigraphy and autoradiography. 2-[(123)I]-MLT infused into the CSF quickly and efficiently diffused into the brain tissues, whereas [(123)I]-iodine (control) was mostly washed away by the CSF flow and [(123)I]-bovine serum albumin remained mostly in the CSF. Taken together, these data support a critical role of CSF in providing the brain with MLT.
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Affiliation(s)
- C Legros
- INRA, UMR85 Physiologie de la Reproduction et des Comportements, Nouzilly, France; CNRS, UMR7247, Nouzilly, France; Université François Rabelais de Tours, Tours, France; IFCE, Nouzilly, France
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Legros C, Devavry S, Caignard S, Tessier C, Delagrange P, Ouvry C, Boutin JA, Nosjean O. Melatonin MT₁ and MT₂ receptors display different molecular pharmacologies only in the G-protein coupled state. Br J Pharmacol 2014; 171:186-201. [PMID: 24117008 PMCID: PMC3874706 DOI: 10.1111/bph.12457] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 09/13/2013] [Accepted: 09/18/2013] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE Melatonin receptors have been extensively characterized regarding their affinity and pharmacology, mostly using 2-[(125)I]-melatonin as a radioligand. Although [(3)H]-melatonin has the advantage of corresponding to the endogenous ligand of the receptor, its binding has not been well described. EXPERIMENTAL APPROACH We characterized [(3)H]-melatonin binding to the hMT₁ and hMT₂ receptors expressed in a range of cell lines and obtained new insights into the molecular pharmacology of melatonin receptors. KEY RESULTS The binding of [(3)H]-melatonin to the hMT₁ and hMT₂ receptors displayed two sites on the saturation curves. These two binding sites were observed on cell membranes expressing recombinant receptors from various species as well as on whole cells. Furthermore, our GTPγS/NaCl results suggest that these sites on the saturation curves correspond to the G-protein coupled and uncoupled states of the receptors, whose pharmacology was extensively characterized. CONCLUSIONS AND IMPLICATIONS hMT₁ and hMT₂ receptors spontaneously exist in two states when expressed in cell lines; these states can be probed by [(3)H]-melatonin binding. Overall, our results suggest that physiological regulation of the melatonin receptors may result from complex and subtle mechanisms, a small difference in affinity between the active and inactive states of the receptor, and spontaneous coupling to G-proteins.
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Affiliation(s)
- Céline Legros
- Biotechnologies, Pharmacologie Moléculaire et Cellulaire, Institut de Recherches ServierCroissy-sur-Seine, France
| | - Séverine Devavry
- Biotechnologies, Pharmacologie Moléculaire et Cellulaire, Institut de Recherches ServierCroissy-sur-Seine, France
- INRA, UMR85 Physiologie de la Reproduction et des ComportementsNouzilly, France
- CNRS, UMR6175Nouzilly, France
| | - Sarah Caignard
- Biotechnologies, Pharmacologie Moléculaire et Cellulaire, Institut de Recherches ServierCroissy-sur-Seine, France
| | - Clémence Tessier
- Biotechnologies, Pharmacologie Moléculaire et Cellulaire, Institut de Recherches ServierCroissy-sur-Seine, France
| | - Philippe Delagrange
- Unité de Recherches en Neurosciences, Institut de Recherches ServierCroissy-sur-Seine, France
| | - Christine Ouvry
- Biotechnologies, Pharmacologie Moléculaire et Cellulaire, Institut de Recherches ServierCroissy-sur-Seine, France
| | - Jean A Boutin
- Biotechnologies, Pharmacologie Moléculaire et Cellulaire, Institut de Recherches ServierCroissy-sur-Seine, France
| | - Olivier Nosjean
- Biotechnologies, Pharmacologie Moléculaire et Cellulaire, Institut de Recherches ServierCroissy-sur-Seine, France
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Chuffa LGA, Fioruci-Fontanelli BA, Mendes LO, Fávaro WJ, Pinheiro PFF, Martinez M, Martinez FE. Characterization of chemically induced ovarian carcinomas in an ethanol-preferring rat model: influence of long-term melatonin treatment. PLoS One 2013; 8:e81676. [PMID: 24367487 PMCID: PMC3867328 DOI: 10.1371/journal.pone.0081676] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 10/15/2013] [Indexed: 11/29/2022] Open
Abstract
Ovarian cancer is the fourth most common cause of cancer deaths among women, and chronic alcoholism may exert co-carcinogenic effects. Because melatonin (mel) has oncostatic properties, we aimed to investigate and characterize the chemical induction of ovarian tumors in a model of ethanol-preferring rats and to verify the influence of mel treatment on the overall features of these tumors. After rats were selected to receive ethanol (EtOH), they were surgically injected with 100 µg of 7,12-dimethyl-benz[a]anthracene (DMBA) plus sesame oil directly under the left ovarian bursa. At 260 days old, half of the animals received i.p. injections of 200 µg mel/100 g b.w. for 60 days. Four experimental groups were established: Group C, rats bearing ovarian carcinomas (OC); Group C+EtOH, rats voluntarily consuming 10% (v/v) EtOH and bearing OC; Group C+M, rats bearing OC and receiving mel; and Group C+EtOH+M, rats with OC consuming EtOH and receiving mel. Estrous cycle and nutritional parameters were evaluated, and anatomopathological analyses of the ovarian tumors were conducted. The incidence of ovarian tumors was higher in EtOH drinking animals 120 days post-DMBA administration, and mel efficiently reduced the prevalence of some aggressive tumors. Although mel promoted high EtOH consumption, it was effective in synchronizing the estrous cycle and reducing ovarian tumor mass by 20%. While rats in the C group displayed cysts containing serous fluid, C+EtOH rats showed solid tumor masses. After mel treatment, the ovaries of these rats presented as soft and mobile tissues. EtOH consumption increased the incidence of serous papillary carcinomas and sarcomas but not clear cell carcinomas. In contrast, mel reduced the incidence of sarcomas, endometrioid carcinomas and cystic teratomas. Combination of DMBA with EtOH intake potentiated the incidence of OC with malignant histologic subtypes. We concluded that mel reduces ovarian masses and the incidence of adenocarcinomas in ethanol-deprived rats.
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Affiliation(s)
- Luiz Gustavo A. Chuffa
- Departamento de Anatomia, Instituto de Biociências, UNESP – Universidade Estadual Paulista, Botucatu-SP, Brazil
- * E-mail:
| | - Beatriz A. Fioruci-Fontanelli
- Departamento de Anatomia, Instituto de Biociências, UNESP – Universidade Estadual Paulista, Botucatu-SP, Brazil
- Programa de Pós-Graduação em Biologia Celular e Estrutural, Instituto de Biologia, Universidade Estadual de Campinas – UNICAMP, Campinas-SP, Brazil
| | - Leonardo O. Mendes
- Departamento de Anatomia, Instituto de Biociências, UNESP – Universidade Estadual Paulista, Botucatu-SP, Brazil
- Programa de Pós-Graduação em Biologia Celular e Estrutural, Instituto de Biologia, Universidade Estadual de Campinas – UNICAMP, Campinas-SP, Brazil
| | - Wagner J. Fávaro
- Departamento de Anatomia, Biologia Celular e Fisiologia e Biofísica, UNICAMP – Universidade de Campinas, Campinas-SP, Brazil
| | | | - Marcelo Martinez
- Departamento de Morfologia e Patologia, UFSCar – Universidade Federal de São Carlos, São Carlos-SP, Brazil
| | - Francisco Eduardo Martinez
- Departamento de Anatomia, Instituto de Biociências, UNESP – Universidade Estadual Paulista, Botucatu-SP, Brazil
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Chan KH, Wong YH. A molecular and chemical perspective in defining melatonin receptor subtype selectivity. Int J Mol Sci 2013; 14:18385-406. [PMID: 24018885 PMCID: PMC3794785 DOI: 10.3390/ijms140918385] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 07/16/2013] [Accepted: 08/26/2013] [Indexed: 12/15/2022] Open
Abstract
Melatonin is primarily synthesized and secreted by the pineal gland during darkness in a normal diurnal cycle. In addition to its intrinsic antioxidant property, the neurohormone has renowned regulatory roles in the control of circadian rhythm and exerts its physiological actions primarily by interacting with the G protein-coupled MT1 and MT2 transmembrane receptors. The two melatonin receptor subtypes display identical ligand binding characteristics and mediate a myriad of signaling pathways, including adenylyl cyclase inhibition, phospholipase C stimulation and the regulation of other effector molecules. Both MT1 and MT2 receptors are widely expressed in the central nervous system as well as many peripheral tissues, but each receptor subtype can be linked to specific functional responses at the target tissue. Given the broad therapeutic implications of melatonin receptors in chronobiology, immunomodulation, endocrine regulation, reproductive functions and cancer development, drug discovery and development programs have been directed at identifying chemical molecules that bind to the two melatonin receptor subtypes. However, all of the melatoninergics in the market act on both subtypes of melatonin receptors without significant selectivity. To facilitate the design and development of novel therapeutic agents, it is necessary to understand the intrinsic differences between MT1 and MT2 that determine ligand binding, functional efficacy, and signaling specificity. This review summarizes our current knowledge in differentiating MT1 and MT2 receptors and their signaling capacities. The use of homology modeling in the mapping of the ligand-binding pocket will be described. Identification of conserved and distinct residues will be tremendously useful in the design of highly selective ligands.
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MESH Headings
- Animals
- Humans
- Melatonin/metabolism
- Receptor, Melatonin, MT1/chemistry
- Receptor, Melatonin, MT1/metabolism
- Receptor, Melatonin, MT2/chemistry
- Receptor, Melatonin, MT2/metabolism
- Receptors, Melatonin/chemistry
- Receptors, Melatonin/metabolism
- Signal Transduction
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Affiliation(s)
- King Hang Chan
- Biotechnology Research Institute, State Key Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong.
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46
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Abstract
Melatonin is a methoxyindole synthesized within the pineal gland. The hormone is secreted during the night and appears to play multiple roles within the human organism. The hormone contributes to the regulation of biological rhythms, may induce sleep, has strong antioxidant action and appears to contribute to the protection of the organism from carcinogenesis and neurodegenerative disorders. At a therapeutic level as well as in prevention, melatonin is used for the management of sleep disorders and jet lag, for the resynchronization of circadian rhythms in situations such as blindness and shift work, for its preventive action in the development of cancer, as additive therapy in cancer and as therapy for preventing the progression of Alzheimer's disease and other neurodegenerative disorders.
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Affiliation(s)
- Ifigenia Kostoglou-Athanassiou
- Ifigenia Kostoglou-Athanassiou, MSc, MD, PhD Department of Endocrinology, Red Cross Hospital, 7 Korinthias Street, Athens, GR115 26, Greece
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47
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Huang H, Wang Z, Weng SJ, Sun XH, Yang XL. Neuromodulatory role of melatonin in retinal information processing. Prog Retin Eye Res 2013; 32:64-87. [PMID: 22986412 DOI: 10.1016/j.preteyeres.2012.07.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 07/24/2012] [Accepted: 07/25/2012] [Indexed: 12/15/2022]
Affiliation(s)
- Hai Huang
- Institute of Neurobiology, Institutes of Brain Science, Fudan University, Shanghai, PR China
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48
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Abstract
Melatonin is an indole hormone secreted by the pineal gland during the hours of darkness in a normally entrained individual. There is a clear circadian rhythm in its production with low levels during the day and a peak in the early hours of the morning. The timing of sample collection is crucial and single time point measurements are of little use. Measurement of melatonin or its major metabolite, 6-sulphatoxymelatonin, is normally carried out to determine the timing of an individual's internal body clock and whether it is synchronized to the 24 h day. Misalignment of the clock or disruption of the rhythm can lead to difficulties in sleeping and health problems such as are associated with jet-lag or shift work. Both melatonin and 6-sulphatoxymelatonin can be measured by RIA or ELISA. Details of sample collection and preparation and the assay procedures are described.
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Affiliation(s)
- Benita Middleton
- Chronobiology Group, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, UK
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49
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Abstract
Circadian rhythms are ubiquitous in biological systems and regulate metabolic processes throughout the body. Misalliance of these circadian rhythms and the systems they regulate has a profound impact on hormone levels and increases risk of developing metabolic diseases. Melatonin, a hormone secreted by the pineal gland, is one of the major signaling molecules used by the master circadian oscillator to entrain downstream circadian rhythms. Several recent genetic studies have pointed out that a common variant in the gene that encodes the melatonin receptor 2 (MTNR1B) is associated with impaired glucose homeostasis, reduced insulin secretion, and an increased risk of developing type 2 diabetes. Here, we try to review the role of this receptor and its signaling pathways in respect to glucose homeostasis and development of the disease.
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MESH Headings
- Circadian Rhythm/genetics
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/genetics
- Female
- Genetic Variation
- Humans
- Insulin/blood
- Insulin/metabolism
- Insulin Secretion
- Insulin-Secreting Cells
- Male
- Melatonin/biosynthesis
- Receptor, Melatonin, MT1/blood
- Receptor, Melatonin, MT1/genetics
- Receptor, Melatonin, MT2/blood
- Receptor, Melatonin, MT2/genetics
- Risk Factors
- Signal Transduction
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Affiliation(s)
- Cecilia Nagorny
- Unit of Molecular Metabolism, Department of Clinical Sciences in Malmoe, Lund University Diabetes Centre, 20502, Malmoe, Sweden.
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50
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Abstract
Melatonin (MEL) is a hormone synthesized and secreted by the pineal gland deep within the brain in response to photoperiodic cues relayed from the retina via an endogenous circadian oscillator within the suprachiasmatic nucleus in the hypothalamus. The circadian rhythm of melatonin production and release, characterized by nocturnal activity and daytime quiescence, is an important temporal signal to the body structures that can read it. Melatonin acts through high-affinity receptors located centrally and in numerous peripheral organs. Different receptor subtypes have been cloned and characterized: MT(1) and MT(2) (transmembrane G-protein-coupled receptors), and MT(3). However, their physiological role remains unelucidated, although livestock management applications already include the control of seasonal breeding and milk production. As for potential therapeutic applications, exogenous melatonin or a melatonin agonist and selective 5-hydroxytrypiamine receptor (5-HT(2c)) antagonist, eg, S 20098, can be used to manipulate circadian processes such as the sleep-vake cycle, which are frequently disrupted in many conditions, most notably seasonal affective disorder.
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Affiliation(s)
- Paul Pévet
- Laboratoire de Neurobiologie des Rythmes, UMR 7518 CNRS-Université Louis Pasteur, Strasbourg, France
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