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Bernatoniene J, Sciupokas A, Kopustinskiene DM, Petrikonis K. Novel Drug Targets and Emerging Pharmacotherapies in Neuropathic Pain. Pharmaceutics 2023; 15:1799. [PMID: 37513986 PMCID: PMC10384314 DOI: 10.3390/pharmaceutics15071799] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/30/2023] Open
Abstract
Neuropathic pain is a debilitating condition characterized by abnormal signaling within the nervous system, resulting in persistent and often intense sensations of pain. It can arise from various causes, including traumatic nerve injury, neuropathy, and certain diseases. We present an overview of current and emerging pharmacotherapies for neuropathic pain, focusing on novel drug targets and potential therapeutic agents. Current pharmacotherapies, including tricyclic antidepressants, gabapentinoids, and serotonin norepinephrine re-uptake inhibitors, are discussed, as are emerging treatments, such as ambroxol, cannabidiol, and N-acetyl-L-cysteine. Additionally, the article highlights the need for further research in this field to identify new targets and develop more effective and targeted therapies for neuropathic pain management.
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Affiliation(s)
- Jurga Bernatoniene
- Department of Drug Technology and Social Pharmacy, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania
- Institute of Pharmaceutical Technologies, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania
| | - Arunas Sciupokas
- Pain Clinic, Lithuanian University of Health Sciences Hospital Kauno Klinikos, Eivenių Str. 2, LT-50009 Kaunas, Lithuania
- Department of Neurology, Lithuanian University of Health Sciences, Eivenių Str. 2, LT-50009 Kaunas, Lithuania
| | - Dalia Marija Kopustinskiene
- Institute of Pharmaceutical Technologies, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania
| | - Kestutis Petrikonis
- Department of Neurology, Lithuanian University of Health Sciences, Eivenių Str. 2, LT-50009 Kaunas, Lithuania
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2
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Amjadi S, Akhoundian M, Alizadeh T. A simple method for melatonin determination in the presence of high levels of tryptophan using an unmodified carbon paste electrode and square wave anodic stripping voltammetry. ELECTROANAL 2022. [DOI: 10.1002/elan.202200210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Somayeh Amjadi
- University of Mohaghegh Ardabili Faculty of Basic Sciences IRAN (THE ISLAMIC REPUBLIC OF)
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Kopustinskiene DM, Bernatoniene J. Molecular Mechanisms of Melatonin-Mediated Cell Protection and Signaling in Health and Disease. Pharmaceutics 2021; 13:129. [PMID: 33498316 PMCID: PMC7909293 DOI: 10.3390/pharmaceutics13020129] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/14/2021] [Accepted: 01/18/2021] [Indexed: 01/07/2023] Open
Abstract
Melatonin, an endogenously synthesized indolamine, is a powerful antioxidant exerting beneficial action in many pathological conditions. Melatonin protects from oxidative stress in ischemic/reperfusion injury, neurodegenerative diseases, and aging, decreases inflammation, modulates the immune system, inhibits proliferation, counteracts the Warburg effect, and promotes apoptosis in various cancer models. Melatonin stimulates antioxidant enzymes in the cells, protects mitochondrial membrane phospholipids, especially cardiolipin, from oxidation thus preserving integrity of the membranes, affects mitochondrial membrane potential, stimulates activity of respiratory chain enzymes, and decreases the opening of mitochondrial permeability transition pore and cytochrome c release. This review will focus on the molecular mechanisms of melatonin effects in the cells during normal and pathological conditions and possible melatonin clinical applications.
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Affiliation(s)
- Dalia M. Kopustinskiene
- Institute of Pharmaceutical Technologies, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania;
| | - Jurga Bernatoniene
- Institute of Pharmaceutical Technologies, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania;
- Department of Drug Technology and Social Pharmacy, Faculty of Pharmacy, Medical Academy, Lithuanian University of Health Sciences, Sukileliu pr. 13, LT-50161 Kaunas, Lithuania
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Marhuenda J, Villaño D, Arcusa R, Zafrilla P. Melatonin in Wine and Beer: Beneficial Effects. Molecules 2021; 26:molecules26020343. [PMID: 33440795 PMCID: PMC7827953 DOI: 10.3390/molecules26020343] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 12/15/2022] Open
Abstract
Melatonin is a hormone secreted in the pineal gland with several functions, especially regulation of circadian sleep cycle and the biological processes related to it. This review evaluates the bioavailability of melatonin and resulting metabolites, the presence of melatonin in wine and beer and factors that influence it, and finally the different benefits related to treatment with melatonin. When administered orally, melatonin is mainly absorbed in the rectum and the ileum; it has a half-life of about 0.45–1 h and is extensively inactivated in the liver by phase 2 enzymes. Melatonin (MEL) concentration varies from picograms to ng/mL in fermented beverages such as wine and beer, depending on the fermentation process. These low quantities, within a dietary intake, are enough to reach significant plasma concentrations of melatonin, and are thus able to exert beneficial effects. Melatonin has demonstrated antioxidant, anticarcinogenic, immunomodulatory and neuroprotective actions. These benefits are related to its free radical scavenging properties as well and the direct interaction with melatonin receptors, which are involved in complex intracellular signaling pathways, including inhibition of angiogenesis and cell proliferation, among others. In the present review, the current evidence on the effects of melatonin on different pathophysiological conditions is also discussed.
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Pourhanifeh MH, Hosseinzadeh A, Dehdashtian E, Hemati K, Mehrzadi S. Melatonin: new insights on its therapeutic properties in diabetic complications. Diabetol Metab Syndr 2020; 12:30. [PMID: 32280378 PMCID: PMC7140344 DOI: 10.1186/s13098-020-00537-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 03/27/2020] [Indexed: 12/11/2022] Open
Abstract
Diabetes and diabetic complications are considered as leading causes of both morbidity and mortality in the world. Unfortunately, routine medical treatments used for affected patients possess undesirable side effects, including kidney and liver damages as well as gastrointestinal adverse reactions. Therefore, exploring the novel therapeutic strategies for diabetic patients is a crucial issue. It has been recently shown that melatonin, as main product of the pineal gland, despite its various pharmacological features including anticancer, anti-aging, antioxidant and anti-inflammatory effects, exerts anti-diabetic properties through regulating various cellular mechanisms. The aim of the present review is to describe potential roles of melatonin in the treatment of diabetes and its complications.
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Affiliation(s)
| | - Azam Hosseinzadeh
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ehsan Dehdashtian
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Karim Hemati
- Department of Anesthesiology, Iran University of Medical Sciences, Tehran, Iran
| | - Saeed Mehrzadi
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
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6
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Boutin JA, Legros C. The five dimensions of receptor pharmacology exemplified by melatonin receptors: An opinion. Pharmacol Res Perspect 2020; 8:e00556. [PMID: 31893125 PMCID: PMC6935684 DOI: 10.1002/prp2.556] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/03/2019] [Accepted: 12/03/2019] [Indexed: 12/22/2022] Open
Abstract
Receptology has been complicated with enhancements in our knowledge of G-protein-coupled-receptor (GPCR) biochemistry. This complexity is exemplified by the pharmacology of melatonin receptors. Here, we describe the complexity of GPCR biochemistry in five dimensions: (a) receptor expression, particularly in organs/tissues that are only partially understood; (b) ligands and receptor-associated proteins (interactome); (c) receptor function, which might be more complex than the known G-protein-coupled systems; (d) ligand bias, which favors a particular pathway; and (e) receptor dimerization, which might concern all receptors coexpressed in the same cell. Thus, receptor signaling might be modified or modulated, depending on the nature of the receptor complex. Fundamental studies are needed to clarify these points and find new ways to tackle receptor functionality. This opinion article emphasizes the global questions attached to new descriptions of GPCRs and aims to raise our awareness of the tremendous complexity of modern receptology.
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Affiliation(s)
- Jean A. Boutin
- Institut de Recherches Internationales ServierSuresnesFrance
| | - Céline Legros
- Institut de Recherches ServierCroissy‐sur‐SeineFrance
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Mohamed GG, Hamed MM, Zaki NG, Abdou MM, Mohamed MEB, Abdallah AM. Melatonin charge transfer complex with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone: Molecular structure, DFT studies, thermal analyses, evaluation of biological activity and utility for determination of melatonin in pure and dosage forms. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 182:143-159. [PMID: 28431312 DOI: 10.1016/j.saa.2017.03.068] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 03/23/2017] [Accepted: 03/30/2017] [Indexed: 06/07/2023]
Abstract
A simple, accurate and fast spectrophotometric method for the quantitative determination of melatonin (ML) drug in its pure and pharmaceutical forms was developed based on the formation of its charge transfer complex with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as an electron acceptor. The different conditions for this method were optimized accurately. The Lambert-Beer's law was found to be valid over the concentration range of 4-100μgmL-1 ML. The solid form of the CT complex was structurally characterized by means of different spectral methods. Density functional theory (DFT) and time-dependent density functional theory (TD-DFT) calculations were carried out. The different quantum chemical parameters of the CT complex were calculated. Thermal properties of the CT complex and its kinetic thermodynamic parameters were studied, as well as its antimicrobial and antifungal activities were investigated. Molecular docking studies were performed to predict the binding modes of the CT complex components towards E. coli bacterial RNA and the receptor of breast cancer mutant oxidoreductase.
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Affiliation(s)
- Gehad G Mohamed
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
| | - Maher M Hamed
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Nadia G Zaki
- Narcotic Research Department, National Center for Social and Criminological Research (NCSCR), Giza 11561, Egypt
| | - Mohamed M Abdou
- Narcotic Research Department, National Center for Social and Criminological Research (NCSCR), Giza 11561, Egypt
| | | | - Abanoub Mosaad Abdallah
- Narcotic Research Department, National Center for Social and Criminological Research (NCSCR), Giza 11561, Egypt
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8
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Favero G, Franceschetti L, Buffoli B, Moghadasian MH, Reiter RJ, Rodella LF, Rezzani R. Melatonin: Protection against age-related cardiac pathology. Ageing Res Rev 2017; 35:336-349. [PMID: 27884595 DOI: 10.1016/j.arr.2016.11.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/04/2016] [Accepted: 11/18/2016] [Indexed: 12/14/2022]
Abstract
Aging is a complex and progressive process that involves physiological and metabolic deterioration in every organ and system. Cardiovascular diseases are one of the most common causes of mortality and morbidity among elderly subjects worldwide. Most age-related cardiovascular disorders can be influenced by modifiable behaviours such as a healthy diet rich in fruit and vegetables, avoidance of smoking, increased physical activity and reduced stress. The role of diet in prevention of various disorders is a well-established factor, which has an even more important role in the geriatric population. Melatonin, an indoleamine with multiple actions including antioxidant properties, has been identified in a very large number of plant species, including edible plant products and medical herbs. Among products where melatonin has been identified include wine, olive oil, tomato, beer, and others. Interestingly, consumed melatonin in plant foods or melatonin supplementation may promote health benefits by virtue of its multiple properties and it may counteract pathological conditions also related to cardiovascular disorders, carcinogenesis, neurological diseases and aging. In the present review, we summarized melatonin effects against age-related cardiac alterations and abnormalities with a special focus on heart ischemia/reperfusion (IR) injury and myocardial infarction.
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Affiliation(s)
- Gaia Favero
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Lorenzo Franceschetti
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Barbara Buffoli
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Mohammed H Moghadasian
- Department of Human Nutritional Sciences, University of Manitoba and the Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB, Canada
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center, San Antonio, TX, USA
| | - Luigi F Rodella
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy
| | - Rita Rezzani
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy.
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Kumar N, Rosy, Goyal RN. Nanopalladium grained polymer nanocomposite based sensor for the sensitive determination of Melatonin. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.06.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Asghari MH, Moloudizargari M, Bahadar H, Abdollahi M. A review of the protective effect of melatonin in pesticide-induced toxicity. Expert Opin Drug Metab Toxicol 2016; 13:545-554. [DOI: 10.1080/17425255.2016.1214712] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Affiliation(s)
- Mohammad Hossein Asghari
- Department of Pharmacology, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Milad Moloudizargari
- Young Researchers and Elite Club, Urmia Branch, Islamic Azad University, Urmia, Iran
| | - Haji Bahadar
- Department of Pharmacy, Kohat University of Science and Technology, Kohat, Pakistan
| | - Mohammad Abdollahi
- Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Chua HM, Hauet Richer N, Swedrowska M, Ingham S, Tomlin S, Forbes B. Dissolution of Intact, Divided and Crushed Circadin Tablets: Prolonged vs. Immediate Release of Melatonin. Pharmaceutics 2016; 8:E2. [PMID: 26751472 PMCID: PMC4810078 DOI: 10.3390/pharmaceutics8010002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 12/23/2015] [Accepted: 12/29/2015] [Indexed: 12/18/2022] Open
Abstract
Circadin 2 mg prolonged-release tablet is the only licensed melatonin product available in the UK. Circadin is indicated for patients with primary insomnia aged 55 and over, but is more widely used "off-label" to treat sleep disorders especially in the paediatric population. Children and older people often have difficulty swallowing tablets and dividing the tablet is sometimes required to ease administration. The aim of this study was to measure the release profile of melatonin from Circadin tablets when divided or crushed, and compare this with release from intact tablets. Dissolution testing was also performed for unlicensed melatonin products for comparison. Dissolution tests were performed using the pharmacopoeial paddle apparatus, with melatonin release analyzed by high performance liquid chromatography. Melatonin content, hardness, friability, and disintegration of the products were also evaluated. The prolonged release of melatonin from Circadin tablets was unlike that of any other product tested. When divided into halves, Circadin preserved most of the prolonged-release characteristic (f2 = 58), whereas quarter-cut and crushed tablet had a more immediate melatonin release profile. Circadin is significantly less expensive and should be preferred to unlicensed medicines which are not pharmaceutically equivalent and offer less quality assurance.
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Affiliation(s)
- Hui Ming Chua
- Institute of Pharmaceutical Science, King's College London, King's Health Partners, London SE1 9NH, UK.
| | - Nathalie Hauet Richer
- Institute of Pharmaceutical Science, King's College London, King's Health Partners, London SE1 9NH, UK.
| | - Magda Swedrowska
- Institute of Pharmaceutical Science, King's College London, King's Health Partners, London SE1 9NH, UK.
| | - Stephen Ingham
- Institute of Pharmaceutical Science, King's College London, King's Health Partners, London SE1 9NH, UK.
| | - Stephen Tomlin
- Pharmacy Department, Evelina London Children's Hospital, Guy's & St. Thomas' NHS Foundation Trust, King's Health Partners, London, UK.
| | - Ben Forbes
- Institute of Pharmaceutical Science, King's College London, King's Health Partners, London SE1 9NH, UK.
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Zhu S, McGeeney B. When Indomethacin Fails: Additional Treatment Options for “Indomethacin Responsive Headaches”. Curr Pain Headache Rep 2015; 19:7. [DOI: 10.1007/s11916-015-0475-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Anderson G, Maes M, Markus RP, Rodriguez M. Ebola virus: Melatonin as a readily available treatment option. J Med Virol 2015; 87:537-43. [DOI: 10.1002/jmv.24130] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2014] [Indexed: 01/10/2023]
Affiliation(s)
- George Anderson
- CRC Scotland and London; Eccleston Square; London United Kingdom
| | - Michael Maes
- Impact Strategic Treatment Center; Deakin University; Geelong Australia
- Department of Psychiatry; Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
- Health Sciences Graduate Program; Health Sciences Center; State University of Londrina; Brazil
| | - Regina P. Markus
- Lab Chronopharmacology; Department of Physiology; Institute of Bioscience; University de S; ã; o Paulo; Brazil
| | - Moses Rodriguez
- Department of Immunology; Department of Neurology; Mayo Clinic; Rochester New York
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14
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Miroddi M, Bruno R, Galletti F, Calapai F, Navarra M, Gangemi S, Calapai G. Clinical pharmacology of melatonin in the treatment of tinnitus: a review. Eur J Clin Pharmacol 2015; 71:263-70. [DOI: 10.1007/s00228-015-1805-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 01/07/2015] [Indexed: 11/30/2022]
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Marseglia L, D'Angelo G, Manti S, Aversa S, Arrigo T, Reiter RJ, Gitto E. Analgesic, anxiolytic and anaesthetic effects of melatonin: new potential uses in pediatrics. Int J Mol Sci 2015; 16:1209-20. [PMID: 25569095 PMCID: PMC4307299 DOI: 10.3390/ijms16011209] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 12/25/2014] [Indexed: 11/16/2022] Open
Abstract
Exogenous melatonin is used in a number of situations, first and foremost in the treatment of sleep disorders and jet leg. However, the hypnotic, antinociceptive, and anticonvulsant properties of melatonin endow this neurohormone with the profile of a drug that modulates effects of anesthetic agents, supporting its potential use at different stages during anesthetic procedures, in both adults and children. In light of these properties, melatonin has been administered to children undergoing diagnostic procedures requiring sedation or general anesthesia, such as magnetic resonance imaging, auditory brainstem response tests and electroencephalogram. Controversial data support the use of melatonin as anxiolytic and antinociceptive agents in pediatric patients undergoing surgery. The aim of this review was to evaluate available evidence relating to efficacy and safety of melatonin as an analgesic and as a sedative agent in children. Melatonin and its analogs may have a role in antinociceptive therapies and as an alternative to midazolam in premedication of adults and children, although its effectiveness is still controversial and available data are clearly incomplete.
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Affiliation(s)
- Lucia Marseglia
- Neonatal and Paediatric Intensive Care Unit, Department of Paediatrics, University of Messina, Via Consolare Valeria, Messina 98125, Italy.
| | - Gabriella D'Angelo
- Neonatal and Paediatric Intensive Care Unit, Department of Paediatrics, University of Messina, Via Consolare Valeria, Messina 98125, Italy.
| | - Sara Manti
- Unit of Paediatric Genetics and Immunology, Department of Paediatrics, University of Messina, Via Consolare Valeria 1, Messina 98125, Italy.
| | - Salvatore Aversa
- Neonatal and Paediatric Intensive Care Unit, Department of Paediatrics, University of Messina, Via Consolare Valeria, Messina 98125, Italy.
| | - Teresa Arrigo
- Unit of Paediatric Genetics and Immunology, Department of Paediatrics, University of Messina, Via Consolare Valeria 1, Messina 98125, Italy.
| | - Russel J Reiter
- Department of Cellular and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, TX 40729, USA.
| | - Eloisa Gitto
- Neonatal and Paediatric Intensive Care Unit, Department of Paediatrics, University of Messina, Via Consolare Valeria, Messina 98125, Italy.
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Gupta P, Goyal RN. Graphene and Co-polymer composite based molecularly imprinted sensor for ultratrace determination of melatonin in human biological fluids. RSC Adv 2015. [DOI: 10.1039/c5ra04942c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
A novel molecularly imprinted polymer (MIP) sensor based on a composite of graphene (GR) and a co-polymer of 4-amino-3-hydroxy-1-naphthalenesulfonic acid (AHNSA) and melamine (MM) has been fabricated for detecting melatonin.
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Affiliation(s)
- Pankaj Gupta
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
| | - Rajendra N. Goyal
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee-247667
- India
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17
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Karmarkar SW, Tischkau SA. Influences of the circadian clock on neuronal susceptibility to excitotoxicity. Front Physiol 2013; 4:313. [PMID: 24204346 PMCID: PMC3817863 DOI: 10.3389/fphys.2013.00313] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 10/12/2013] [Indexed: 11/13/2022] Open
Abstract
Stroke is the third leading cause of death and the primary cause of morbidity in the United States, thus posing an enormous burden on the healthcare system. The factors that determine the risk of an individual toward precipitation of an ischemic event possess a strong circadian component as does the ischemic event itself. This predictability provided a window of opportunity toward the development of chronopharmaceuticals which provided much better clinical outcomes. Experiments from our lab showed for the first time that neuronal susceptibility to ischemic events follows a circadian pattern; hippocampal neurons being most susceptible to an ischemic insult occurring during peak activity in a rodent model of global cerebral ischemia. We also demonstrated that the SCN2.2 cells (like their in vivo counterpart) are resistant to excitotoxicity by glutamate and that this was dependent on activation of ERK signaling. We are currently working on elucidating the complete neuroprotective pathway that provides a barricade against glutamate toxicity in the SCN2.2 cells. Our future experiments will be engaged in hijacking the neuroprotective mechanism in the SCN2.2 cells and applying it to glutamate-susceptible entities in an effort to prevent their death in the presence of excitotoxicity. Despite the advancement in chronopharmaceuticals, optimal clinical outcome with minimal adverse events are difficult to come by at an affordable price. Superior treatment options require a better understanding of molecular mechanisms that define the disease, including the role of the circadian clock.
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Affiliation(s)
- Sumedha W Karmarkar
- Department of Pharmacology, Southern Illinois University School of Medicine Springfield, IL, USA
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18
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Ahmed MAE, Ahmed HI, El-Morsy EM. Melatonin protects against diazinon-induced neurobehavioral changes in rats. Neurochem Res 2013; 38:2227-36. [PMID: 23979727 DOI: 10.1007/s11064-013-1134-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 08/08/2013] [Accepted: 08/14/2013] [Indexed: 12/29/2022]
Abstract
Diazinon is an organophosphorous pesticide with a prominent toxicity on many body organs. Multiple mechanisms contribute to diazinon-induced deleterious effects. Inhibition of acetyl-cholinesterase, cholinergic hyperstimulation, and formation of reactive oxygen species may play a role. On the other hand, melatonin is a pineal hormone with a well-known potent antioxidant activity and a remarkable modulatory effect on many behavioral processes. The present study revealed that oral diazinon administration (25 mg/kg) increased anxiety behavior in rats subjected to elevated plus maze and open-field tests possibly via the induction of changes in brain monoamines levels (dopamine, norepinephrine, and serotonin). Additionally, brain lipid peroxides measured as malondialdehyde (MDA) and tumor necrosis factor alpha (TNF-α) levels were elevated, while the activity of brain glutathione peroxidase enzyme was reduced by diazinon. Co-administration of oral melatonin (10 mg/kg) significantly attenuated the anxiogenic activity of diazinon, rebalanced brain monoamines levels, decreased brain MDA and TNF-α levels, and increased the activity of brain glutathione peroxidase enzyme.
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Affiliation(s)
- Maha A E Ahmed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Misr University for Science and Technology (MUST), 6th of October City, Egypt,
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Abstract
Twelve melatonin amide prodrugs aiming at prolonging the action of melatoninin vivoby improving its half-life were designed and synthesized. Using an 80% human plasma model, it was found that the aliphatic amide derivatives were relatively stable and melatonin release from these compounds was not sufficient with melatonin release percentage. After 4-hour incubation with 80% human plasma, the melatonin release percentage achieved only approximately less than 20%. In contrast, the -succinyl and -glutaroylmelatonin derivatives (compounds11and12, resp.) were found to release melatonin in much higher rates. After 3-hour incubation in 80% human plasma, the melatonin release rates from11and12were found to be 67.3 and 75.6%, respectively. From these results, the -succinyl and -glutaroylmelatonin derivatives (compounds11and12) could be promising as sustained release prodrugs of melatonin.
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