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Zhai X, Wang N, Jiao H, Zhang J, Li C, Ren W, Reiter RJ, Su S. Melatonin and other indoles show antiviral activities against swine coronaviruses in vitro at pharmacological concentrations. J Pineal Res 2021; 71:e12754. [PMID: 34139040 DOI: 10.1111/jpi.12754] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/10/2021] [Accepted: 06/15/2021] [Indexed: 12/22/2022]
Abstract
The current coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), highlights major gaps in our knowledge on the prevention control and cross-species transmission mechanisms of animal coronaviruses. Transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), and porcine delta coronavirus (PDCoV) are three common swine coronaviruses and have similar clinical features. In the absence of effective treatments, they have led to significant economic losses in the swine industry worldwide. We reported that indoles exerted potent activity against swine coronaviruses, the molecules used included melatonin, indole, tryptamine, and L-tryptophan. Herein, we did further systematic studies with melatonin, a ubiquitous and versatile molecule, and found it inhibited TGEV, PEDV, and PDCoV infection in PK-15, Vero, or LLC-PK1 cells by reducing viral entry and replication, respectively. Collectively, we provide the molecular basis for the development of new treatments based on the ability of indoles to control TGEV, PEDV, and PDCoV infection and spread.
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Affiliation(s)
- Xiaofeng Zhai
- Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Ningning Wang
- Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Houqi Jiao
- Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Jie Zhang
- Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Chaofan Li
- Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
| | - Wenkai Ren
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Laboratory of Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health San Antonio, San Antonio, TX, USA
| | - Shuo Su
- Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, China
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Clinical Application of Melatonin in the Treatment of Cardiovascular Diseases: Current Evidence and New Insights into the Cardioprotective and Cardiotherapeutic Properties. Cardiovasc Drugs Ther 2020; 36:131-155. [PMID: 32926271 DOI: 10.1007/s10557-020-07052-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/04/2020] [Indexed: 12/17/2022]
Abstract
Cardiovascular diseases (CVDs) are the leading global cause of mortality and disability, tending to happen in younger individuals in developed countries. Despite improvements in medical treatments, the therapy and long-term prognosis of CVDs such as myocardial ischemia-reperfusion, atherosclerosis, heart failure, cardiac hypertrophy and remodeling, cardiomyopathy, coronary artery disease, myocardial infarction, and other CVDs threatening human life are not satisfactory enough. Therefore, many researchers are attempting to identify novel potential therapeutic methods for the treatment of CVDs. Melatonin is an anti-inflammatory and antioxidant agent with a wide range of therapeutic properties. Recently, several investigations have been carried out to evaluate its effectiveness and efficiency in CVDs therapy, focusing on mechanistic pathways. Herein, this review aims to summarize current findings of melatonin treatment for CVDs.
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Cardinali DP, Vigo DE. Melatonin, mitochondria, and the metabolic syndrome. Cell Mol Life Sci 2017; 74:3941-3954. [PMID: 28819865 PMCID: PMC11107716 DOI: 10.1007/s00018-017-2611-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 08/03/2017] [Indexed: 12/12/2022]
Abstract
A number of risk factors for cardiovascular disease including hyperinsulinemia, glucose intolerance, dyslipidemia, obesity, and elevated blood pressure are collectively known as metabolic syndrome (MS). Since mitochondrial activity is modulated by the availability of energy in cells, the disruption of key regulators of metabolism in MS not only affects the activity of mitochondria but also their dynamics and turnover. Therefore, a link of MS with mitochondrial dysfunction has been suspected since long. As a chronobiotic/cytoprotective agent, melatonin has a special place in prevention and treatment of MS. Melatonin levels are reduced in diseases associated with insulin resistance like MS. Melatonin improves sleep efficiency and has antioxidant and anti-inflammatory properties, partly for its role as a metabolic regulator and mitochondrial protector. We discuss in the present review the several cytoprotective melatonin actions that attenuate inflammatory responses in MS. The clinical data that support the potential therapeutical value of melatonin in human MS are reviewed.
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Affiliation(s)
- Daniel P Cardinali
- BIOMED-UCA-CONICET and Department of Teaching and Research, Faculty of Medical Sciences, Pontificia Universidad Católica Argentina, Av. Alicia Moreau de Justo 1500, 4o piso, 1107, Buenos Aires, Argentina.
| | - Daniel E Vigo
- BIOMED-UCA-CONICET and Department of Teaching and Research, Faculty of Medical Sciences, Pontificia Universidad Católica Argentina, Av. Alicia Moreau de Justo 1500, 4o piso, 1107, Buenos Aires, Argentina
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Pandi-Perumal SR, BaHammam AS, Ojike NI, Akinseye OA, Kendzerska T, Buttoo K, Dhandapany PS, Brown GM, Cardinali DP. Melatonin and Human Cardiovascular Disease. J Cardiovasc Pharmacol Ther 2017; 22:122-132. [DOI: 10.1177/1074248416660622] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
The possible therapeutic role of melatonin in the pathophysiology of coronary artery disorder (CAD) is increasingly being recognized. In humans, exogenous melatonin has been shown to decrease nocturnal hypertension, improve systolic and diastolic blood pressure, reduce the pulsatility index in the internal carotid artery, decrease platelet aggregation, and reduce serum catecholamine levels. Low circulating levels of melatonin are reported in individuals with CAD, arterial hypertension, and congestive heart failure. This review assesses current literature on the cardiovascular effects of melatonin in humans. It can be concluded that melatonin deserves to be considered in clinical trials evaluating novel therapeutic interventions for cardiovascular disorders.
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Affiliation(s)
- Seithikurippu R. Pandi-Perumal
- Department of Medicine, College of Medicine, The University Sleep Disorders Center, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed S. BaHammam
- Department of Medicine, College of Medicine, The University Sleep Disorders Center, King Saud University, Riyadh, Saudi Arabia
| | - Nwakile I. Ojike
- Division of Health and Behavior, Department of Population Health, New York University Medical Center, Center for Healthful Behavior Change, New York, NY, USA
| | - Oluwaseun A. Akinseye
- Department of Internal Medicine, Icahn School of Medicine at Mount Sinai, Queens Hospital Center, New York, NY, USA
- CUNY School of Public Health at Brooklyn College, New York, NY, USA
| | - Tetyana Kendzerska
- Institute for Clinical Evaluative Sciences, Sunnybrook Health Sciences Center, Toronto, Ontario, Canada
| | | | - Perundurai S. Dhandapany
- The Knight Cardiovascular Institute, Oregon Health and Science University, Portland, OR, USA
- Department of Medicine, Oregon Health and Science University, Portland, OR, USA
- Department of Molecular and Medical Genetics, Oregon Health and Science University, Portland, OR, USA
- Centre for Cardiovascular Biology and Disease, Institute for Stem Cell Biology and Regenerative Medicine (inStem), Bangalore, India
| | - Gregory M. Brown
- Centre for Addiction and Mental Health, University of Toronto, Toronto, Ontario, Canada
| | - Daniel P. Cardinali
- BIOMED-UCA-CONICET and Department of Teaching and Research, Faculty of Medical Sciences, Pontificia Universidad Católica Argentina, Buenos Aires, Argentina
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Lansink MO, Görlinger K, Hartmann M, de Groot H, Effenberger-Neidnicht K. Melatonin does not affect disseminated intravascular coagulation but diminishes decreases in platelet count during subacute endotoxaemia in rats. Thromb Res 2016; 139:38-43. [DOI: 10.1016/j.thromres.2015.10.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 09/30/2015] [Accepted: 10/13/2015] [Indexed: 12/15/2022]
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Di Bella G, Mascia F, Gualano L, Di Bella L. Melatonin anticancer effects: review. Int J Mol Sci 2013; 14:2410-30. [PMID: 23348932 PMCID: PMC3587994 DOI: 10.3390/ijms14022410] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 01/14/2013] [Accepted: 01/15/2013] [Indexed: 12/12/2022] Open
Abstract
Melatonin (N-acetyl-5-methoxytryptamine, MLT), the main hormone produced by the pineal gland, not only regulates circadian rhythm, but also has antioxidant, anti-ageing and immunomodulatory properties. MLT plays an important role in blood composition, medullary dynamics, platelet genesis, vessel endothelia, and in platelet aggregation, leukocyte formula regulation and hemoglobin synthesis. Its significant atoxic, apoptotic, oncostatic, angiogenetic, differentiating and antiproliferative properties against all solid and liquid tumors have also been documented. Thanks, in fact, to its considerable functional versatility, MLT can exert both direct and indirect anticancer effects in factorial synergy with other differentiating, antiproliferative, immunomodulating and trophic molecules that form part of the anticancer treatment formulated by Luigi Di Bella (Di Bella Method, DBM: somatostatin, retinoids, ascorbic acid, vitamin D3, prolactin inhibitors, chondroitin-sulfate). The interaction between MLT and the DBM molecules counters the multiple processes that characterize the neoplastic phenotype (induction, promotion, progression and/or dissemination, tumoral mutation). All these particular characteristics suggest the use of MLT in oncological diseases.
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Affiliation(s)
- Giuseppe Di Bella
- Di Bella Foundation, Via Guglielmo Marconi 51, Bologna 40122, Italy.
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Cardinali DP, Golombek DA, Rosenstein RE, Cutrera RA, Esquifino AI. Melatonin site and mechanism of action: single or multiple? J Pineal Res 1997; 23:32-9. [PMID: 9379344 DOI: 10.1111/j.1600-079x.1997.tb00332.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
By affecting the entrainment pathways of the biologic clock, melatonin has a major influence on the circadian and seasonal organization of vertebrates. In addition, a number of versatile functions that far transcend melatonin actions on photoperiodic time measurement and circadian entrainment have emerged. Melatonin is a free radical scavenger and antioxidant and it has a significant immunomodulatory activity, being presumably a major factor in an organism's defense toxic agents and invading organisms. Besides affecting specific receptors in cell membranes to exert its effects, the interaction of melatonin with nuclear receptor sites and with intracellular proteins, like calmodulin or tubulin-associated proteins, as well as the direct antioxidant effects of melatonin, may explain many general functions of the pineal hormone.
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Affiliation(s)
- D P Cardinali
- Departamento de Fisiología, Facultad de Medicina, Universidad de Buenos Aires, Argentina.
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Martín FJ, Atienza G, Aldegunde M, Míguez JM. Melatonin effect on serotonin uptake and release in rat platelets: diurnal variation in responsiveness. Life Sci 1993; 53:1079-87. [PMID: 8366770 DOI: 10.1016/0024-3205(93)90261-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
UNLABELLED The present study was conducted to examine whether melatonin impairs serotonin (5HT) release and uptake in rat platelets. Exposure of platelet-rich plasma samples (PRP) to melatonin induced a concentration-dependent inhibition of 5HT uptake and the value of IC50 was 1.3 x 10(-3) M. We have also investigated the melatonin effect on the kinetic parameters of platelet 5HT uptake. Transport capacity was inhibited (Vmax; CONTROL 2.28 +/- 0.52, Melatonin: 0.74 +/- 0.13 pmol/10(7) platelet.min; p < 0.05) while the affinity of 5HT for its uptake carriers remained unaltered, thus indicating a non-competitive effect. Studies carried out to determine the existence of a differential morning (8:00h)-evening (21:00h) melatonin effect showed a higher platelet uptake sensitivity at 8:00h (two-way ANOVA, p < 0.001). Spontaneous 5HT release was not impared by the hormone and no daily variation in sensitivity was detected. The possible mechanism of action of melatonin on platelet transport is discussed, and the results support the suitability of the platelet model for studying sensitivity changes in target cells to the hormone.
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Affiliation(s)
- F J Martín
- Departamento de Fisioloxía, Facultade de Bioloxía, Universidade de Santiago de Compostela, Spain
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Cardinali DP, Bonanni Rey RA, Mediavilla MD, Sánchez-Barceló E. Diurnal changes in cyclic nucleotide response to pineal indoles in murine mammary glands. J Pineal Res 1992; 13:111-6. [PMID: 1336546 DOI: 10.1111/j.1600-079x.1992.tb00064.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The aim of this study was to determine whether pineal indoles affect cyclic nucleotide levels in mammary gland slices of BALB/c adult mice. Melatonin at 0.1 nM-10 microM concentrations decreased cAMP and augmented cGMP concentration in murine mammary gland slices in the presence of a phosphodiesterase inhibitor (1 mM theophylline), an index of cyclic nucleotide synthesis. Melatonin-induced changes in cyclic nucleotide levels were significantly larger at the end of the light period (2000) than in the morning (at 1000). Indole-induced inhibition of cyclic AMP levels by mammary slices exhibited the following order of potency: 5-methoxytryptamine > melatonin > or = 6-hydroxymelatonin > serotonin, N-acetylserotonin > 5-hydroxytryptophol. The order of potency for indole-induced augmentation of cyclic GMP levels was: 5-methoxytryptamine > melatonin > 6-hydroxymelatonin > serotonin, N-acetylserotonin, 5-hydroxytryptophol. When melatonin or 5-methoxytryptamine (10 nM) were examined for their effects on cAMP and cGMP levels in mammary glands of mice killed at six different time intervals during the 24-hr cycle, the activity was maximal during night. The data demonstrate that 5-methoxytryptamine and melatonin decreased cAMP and increased cGMP levels in mammary gland slices. Methoxyindole-induced changes in cyclic nucleotide synthesis in murine mammary glands exhibit the time-dependency known to occur in several other melatonin-influenced responses.
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Affiliation(s)
- D P Cardinali
- Departamento de Fisiología, Facultad de Mediciña, Universidad de Buenos Aires, Argentina
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Abstract
A number of in vitro effects of melatonin on human platelets were revealed in previous studies. In order to examine whether high affinity binding sites for [3H]-melatonin were present in membrane preparations of human platelets, a rapid filtration procedure through Whatman GFB paper was employed. Maximal melatonin binding was attained within 3 hr at 0 degree C. Scatchard analysis indicated a single population of binding sites with a dissociation constant (Kd) = 4.1 +/- 0.5 nM and maximal number of binding sites (Bmax) = 24.2 +/- 1.9 fmol/mg protein (mean +/- SEM of five experiments). When various indole analogs were tested for their ability to inhibit [3H]-melatonin binding, the following Ki (nM) were obtained: 6-chloromelatonin (11.4), 2-iodomelatonin (22.0), melatonin (24.7), 5-methoxytryptophol (49.9), N-acetylserotonin (68.9), 6-hydroxymelatonin (78.2), 5-methoxytryptamine (184). Serotonin was a potent inhibitor of [3H]-melatonin binding with a Ki = 20.6 nM. Except for 2-methylserotonin and alpha-methylserotonin, a number of serotonin agonists and antagonists tested did not affect melatonin binding to platelet membranes. Binding experiments carried out at either 0800 or 2000 did not reveal time-dependent differences in Kd or Bmax. The results suggest that high affinity melatonin acceptors are present in human platelets.
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Affiliation(s)
- M I Vacas
- Departamento de Fisologia, Facultad de Medicina, Buenos Aires, Argentina
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Golombek DA, Fernández Duque D, De Brito Sánchez MG, Burin L, Cardinali DP. Time-dependent anticonvulsant activity of melatonin in hamsters. Eur J Pharmacol 1992; 210:253-8. [PMID: 1612101 DOI: 10.1016/0014-2999(92)90412-w] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The objective of the present study was to assess whether the anticonvulsant activity of melatonin displays diurnal variability in hamsters. Convulsions were induced by administering 3-mercaptopropionic acid (3-MP). There was a significant diurnal variation in 3-MP-induced convulsions, hamsters being more prone to exhibit seizures during the night than during the day. Melatonin (50 mg/kg i.p.) had a maximal anticonvulsive effect in the early evening (20:00 h). The administration at 20:00 h of the central-type benzodiazepine antagonist, Ro 15-1788, although unable by itself to modify seizure threshold, blunted the anticonvulsant response to melatonin. The results indicate that the time-dependent anticonvulsant activity of melatonin is sensitive to central-type benzodiazepine antagonism.
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Affiliation(s)
- D A Golombek
- Departamento de Fisiología, Facultad de Medicina, Universidad de Buenos Aires, Argentina
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Vacas MI, Del Zar MM, Martinuzzo M, Falcon C, Carreras LO, Cardinali DP. Inhibition of human platelet aggregation and thromboxane B2 production by melatonin. Correlation with plasma melatonin levels. J Pineal Res 1991; 11:135-9. [PMID: 1795222 DOI: 10.1111/j.1600-079x.1991.tb00468.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Plasma melatonin concentrations and the effect of melatonin on arachidonic acid (AA)-induced aggregation and thromboxane B2 (TxB2) production by platelet-rich plasma (PRP) were examined in five normal male volunteers, sampled at 2 hr intervals from 21:30 to 09:30 hr. Peak plasma melatonin concentration was found at 03:30 hr. Inhibition by 10(-6) M melatonin of AA-induced PRP aggregation was observed only in samples taken at 01:30 hr. Assessment of the inhibitory effect of 10(-9)-10(-6) M melatonin on AA-induced TxB2 production indicated that melatonin activity was greater at 01:30 h as compared to late night. Assessed as a global effect, the inhibitory activity of melatonin on PRP TxB2 showed a maximum at 01:30 hr and minimal effects at 03:30 hr, at the time when plasma concentrations of melatonin were highest. These results indicate the existence of a nocturnal variation in sensitivity of human platelets to melatonin, with a peak that precedes the maximum in circulating melatonin levels.
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Affiliation(s)
- M I Vacas
- Departamento de Fisiología, Facultad de Medicina, Hospital de Clínicas José de San Martín, Universidad de Buenos Aires, Argentina
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Martinuzzo M, Del Zar MM, Cardinali DP, Carreras LO, Vacas MI. Melatonin effect on arachidonic acid metabolism to cyclooxygenase derivatives in human platelets. J Pineal Res 1991; 11:111-5. [PMID: 1795220 DOI: 10.1111/j.1600-079x.1991.tb00465.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The effect of melatonin on thrombin-induced [3H]-arachidonic acid (AA) metabolism to cyclooxygenase derivatives was determined in platelets obtained from normal volunteers at 0830 and 2030 h. Percent conversion of radioactive AA was generally greater at 2030 h than at 0830 h for every cyclooxygenase derivative analyzed. Micromolar or greater concentrations of melatonin decreased significantly the conversion of [3H]-AA to prostaglandin (PG) F2 and thromboxane (Tx) B2, and inhibited slightly the conversion to PGE2 and PGD2. After preincubation of platelets with 1 mM imidazole, the melatonin inhibitory effect was significant for PGF2 only. Melatonin (10(-6) M) showed a significant inhibitory influence on platelet ATP release induced by phorbol-12 myristate-13 acetate (PMA) at 2030 h, an effect inhibited by 1 mM aspirin. These results indicate that at pharmacological concentrations melatonin inhibits human platelet cyclooxygenase.
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Affiliation(s)
- M Martinuzzo
- Departamento de Fisiología, Facultad de Medicina, Hospital de Clínicas José de San Martín, Universidad de Buenos Aires, Argentina
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