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Kernbach ME, Hall RJ, Burkett-Cadena ND, Unnasch TR, Martin LB. Dim light at night: physiological effects and ecological consequences for infectious disease. Integr Comp Biol 2019; 58:995-1007. [PMID: 29939262 DOI: 10.1093/icb/icy080] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Light pollution has emerged as a pervasive component of land development over the past century. Several detrimental impacts of this anthropogenic influence have been identified in night shift workers, laboratory rodents, and a plethora of wildlife species. Circadian, or daily, patterns are interrupted by the presence of light at night and have the capacity to alter rhythmic physiological or behavioral characteristics. Indeed, biorhythm disruption can lead to metabolic, reproductive, and immunological dysfunction depending on the intensity, timing, duration, and wavelength of light exposure. Light pollution, in many forms and by many pathways, is thus apt to affect the nature of host-pathogen interactions. However, no research has yet investigated this possibility. The goal of this manuscript is to outline how dim light at night, a relevant and common form of light pollution, may affect disease dynamics by interrupting circadian rhythms and regulation of immune responses as well as opportunities for host-parasite interactions and subsequent transmission risk including spillover into humans. We close by proposing some promising interventions including alternative lighting methods or vector control efforts.
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Affiliation(s)
| | - Richard J Hall
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | | | - Thomas R Unnasch
- Department of Global Health, University of South Florida, Tampa, FL, USA
| | - Lynn B Martin
- Department of Global Health, University of South Florida, Tampa, FL, USA
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PK-PD based optimal dose and time for orally administered supra-pharmacological dose of melatonin to prevent radiation induced mortality in mice. Life Sci 2019; 219:31-39. [PMID: 30625289 DOI: 10.1016/j.lfs.2019.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/31/2018] [Accepted: 01/06/2019] [Indexed: 12/11/2022]
Abstract
AIMS The study reports preclinical pharmacokinetics (PK) and correlation with pharmacological effect at suprapharmacological dose of orally administered melatonin along with time and dose optimization, which have been lacking in earlier reports of radioprotection using melatonin. METHODS PK of melatonin in C57BL/6 mice was evaluated after dose of 250 mg/kg using HPLC. Tissue distribution study was conducted in vital organs following oral administration. Plasma total antioxidant capacity (TAC) was determined by ABTS+ radical assay and was correlated to plasma concentrations of melatonin. Using the outcomes of PK and Pharmacodynamics (PD), survival study was conducted for optimization of 'drug radiation gap period' (DRGP). Optimal oral dose for radioprotection was determined using survival as an end point. KEY FINDINGS PK analysis of melatonin revealed Tmax at 5 min with closely spaced another distinct concentration peak at 20 min. Plasma TAC of melatonin showed similar peaks at 5 min and 45 min, with the highest TAC at 45 min. Survival following a lethal (9 Gy) radiation dose was 20% and 40% after 5 and 45 min of melatonin administration, respectively. DRGP for melatonin was thus 45 min, while optimal oral dose ranged from 125 to 250 mg/kg. PK parameters at 250 mg/kg dose were qualitatively similar to low dose of melatonin, thus preventing chances of unexpected toxicity. SIGNIFICANCE Survival enhancement at 45 min suggested as probable interval required as 'DRGP'. The optimum oral therapeutic window appears large with no substantial toxicity. The outcomes will be useful in development of radioprotectors as well as other therapeutic applications.
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VIVEK PRINCE, BHARTI VIJAYK, KALIA SAHIL, GIRI ARUP, KUMAR KRISHNA, KUMAR BHUVNESH. Protective effects of melatonin against fluoride-induced oxidative stress in rats at high altitude. THE INDIAN JOURNAL OF ANIMAL SCIENCES 2019. [DOI: 10.56093/ijans.v89i1.86377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This study was conducted to evaluate the protective effects of melatonin against fluoride-induced oxidative stress-mediated haematological and biochemical changes in rat at high altitude. Adult male Wistar rats (6) were given the basal diet and drinking water ad lib. for first 7-days which was considered as the control period. Thereafter, they were exposed to NaF (@ 50 ppm) per-oral through drinking water for the next 14 days followed by melatonin treatment (@ 15 mg/kg BW, p.o.) for the next 14 days. The result showed induction of oxidative stress during NaF treatment alone, which caused significant increase in alkaline phosphatase (ALP), alanine aminotransferase (ALT), and aspartate aminotransferase (AST) activity, and % inhibition of DPPH, MDA, and water intake. Whereas, total antioxidant capacity (FRAP) and body weight gain were significantly reduced during NaF exposure. Haemogram analysis indicated significant decrease in haemoglobin, packed cell volume, erythrocytes, lymphocytes, platelets count, whereas increase in MCH, monocytes, neutrophil, and eosinophil during NaF exposure. However, melatonin administration after 14 days of fluoride treatment resulted in significant amelioration of adverse changes occurred in different blood-biochemical parameters and also increased the total antioxidant status. Notably, the body weight gain improved during melatonin administration. These findings indicated induction of oxidative stress-mediated adverse change in haematology and biochemical parameters, and amelioration effect of oral dose of melatonin in rats under high altitude stress condition. Hence it can be concluded that melatonin acts as a potent antioxidant agent, which may be orally supplemented for amelioration of fluoride-mediated oxidative stress even under prevalent high altitude stress.
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Shabeeb D, Najafi M, Musa AE, Keshavarz M, Shirazi A, Hassanzadeh G, Hadian MR, Samandari H. Biochemical and Histopathological Evaluation of the Radioprotective Effects of Melatonin Against Gamma Ray-Induced Skin Damage. Curr Radiopharm 2019; 12:72-81. [PMID: 30465519 DOI: 10.2174/1874471012666181120163250] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 10/25/2018] [Accepted: 11/07/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Radiotherapy is one of the treatment methods for cancers using ionizing radiations. About 70% of cancer patients undergo radiotherapy. Radiation effect on the skin is one of the main complications of radiotherapy and dose limiting factor. To ameliorate this complication, we used melatonin as a radioprotective agent due to its antioxidant and anti-inflammatory effects, free radical scavenging, improving overall survival after irradiation as well as minimizing the degree of DNA damage and frequency of chromosomal abrasions. METHODS Sixty male Wistar rats were randomly assigned to 4 groups: control (C), melatonin (M), radiation (R) and melatonin + radiation (MR). A single dose of 30 Gy gamma radiation was exposed to the right hind legs of the rats while 40 mg/ml of melatonin was administered 30 minutes before irradiation and 2 mg/ml once daily in the afternoon for one month till the date of rat's sacrifice. Five rats from each group were sacrificed 4, 12 and 20 weeks after irradiation. Afterwards, their exposed skin tissues were examined histologically and biochemically. RESULTS In biochemical analysis, we found that malondialdehyde (MDA) levels significantly increased in R group and decreased significantly in M and MR groups after 4, 12, and 20 weeks, whereas catalase (CAT) and superoxide dismutase (SOD) activities decreased in the R group and increased in M and MR groups during the same time periods compared with the C group (p<0.05). Histopathological examination found there were statistically significant differences between R group compared with the C and M groups for the three different time periods (p<0.005, p<0.004 and p<0.004) respectively, while R group differed significantly with MR group (p<0.013). No significant differences were observed between C and M compared with MR group (p>0.05) at 4 and 20 weeks except for inflammation and hair follicle atrophy, while there were significant effects at 12 weeks (p<0.05). CONCLUSION Melatonin can be successfully used for the prevention and treatment of radiation-induced skin injury. We recommend the use of melatonin in optimal and safe doses. These doses should be administered over a long period of time for effective radioprotection and amelioration of skin damages as well as improving the therapeutic ratio of radiotherapy.
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Affiliation(s)
- Dheyauldeen Shabeeb
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Science, International Campus, Tehran, Iran
- Department of Physiology, College of Medicine, University of Misan, Iraq
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoud Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ahmed Eleojo Musa
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Science, International Campus, Tehran, Iran
- Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran
| | - Mansoor Keshavarz
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Shirazi
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Science, International Campus, Tehran, Iran
- Electrophysiology Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Hassanzadeh
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammed Reza Hadian
- Brain and Spinal Cord Injury, Research Center, Neuroscience Institute, Tehran University of Medical Science, Tehran, Iran
| | - Hedayat Samandari
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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González-González A, González A, Rueda N, Alonso-González C, Menéndez-Menéndez J, Gómez-Arozamena J, Martínez-Campa C, Cos S. Melatonin Enhances the Usefulness of Ionizing Radiation: Involving the Regulation of Different Steps of the Angiogenic Process. Front Physiol 2019; 10:879. [PMID: 31354524 PMCID: PMC6637960 DOI: 10.3389/fphys.2019.00879] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 06/24/2019] [Indexed: 02/05/2023] Open
Abstract
Radiotherapy is a part of cancer treatment. To improve its efficacy has been combined with radiosensitizers such as antiangiogenic agents. Among the mechanisms of the antitumor action of melatonin are antiangiogenic effects. Our goal was to investigate whether melatonin may modulate the sensitivity of endothelial cells (HUVECs) to ionizing radiation. Melatonin (1 mM) enhanced the inhibition induced by radiation on different steps of the angiogenic process, cell proliferation, migration, and tubular network formation. In relation with the activity and expression of enzymes implicated in estrogen synthesis, in co-cultures HUVECs/MCF-7, radiation down-regulated aromatase mRNA expression, aromatase endothelial-specific promoter I.7, sulfatase activity and expression and 17β-HSD1 activity and expression and melatonin enhanced these effects. Radiation and melatonin induced a significant decrease in VEGF, ANG-1, and ANG-2 mRNA expression. In ANG-2 and VEGF mRNA expression melatonin potentiated the inhibitory effect induced by radiation. In addition, melatonin counteracted the stimulatory effect of radiation on FGFR3, TGFα, JAG1, IGF-1, and KDR mRNA expression and reduced ANPEP expression. In relation with extracellular matrix molecules, radiation increased MMP14 mRNA expression and melatonin counteracted the stimulatory effect of radiation on MMP14 mRNA expression and increased TIMP1 expression, an angiogenesis inhibitor. Melatonin also counteracted the stimulatory effect of radiation on CXCL6, CCL2, ERK1, ERK2, and AKT1 mRNA expression and increased the inhibitory effect of radiation on NOS3 expression. In CAM assay, melatonin enhanced the reduction of the vascular area induced by radiation. Melatonin potentiated the inhibitory effect on the activation of p-AKT and p-ERK exerted by radiation. Antiangiogenic effect of melatonin could be mediated through AKT and ERK pathways, proteins involved in vascular endothelial (VE) cell growth, cell proliferation, survival, migration, and angiogenesis. In addition, radiation increased endothelial cell permeability and melatonin counteracted it by regulating the internalization of VE-cadherin. Radiation has some side effects on angiogenesis that may reduce its effectiveness against tumor growth and melatonin is able to neutralize these negative actions of radiation. Additionally, melatonin potentiated radiation-induced antiangiogenic actions on several steps of the angiogenic process and enhanced its antitumor action. Our findings point to melatonin as a useful molecule as adjuvant to radiotherapy in cancer treatment.
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Affiliation(s)
- Alicia González-González
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
| | - Alicia González
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
- *Correspondence: Alicia González,
| | - Noemí Rueda
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
| | - Carolina Alonso-González
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
| | - Javier Menéndez-Menéndez
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
| | - José Gómez-Arozamena
- Department of Medical Physics, School of Medicine, University of Cantabria, Santander, Spain
| | - Carlos Martínez-Campa
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
- Carlos Martínez-Campa,
| | - Samuel Cos
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Sanitaria Valdecilla (IDIVAL), Santander, Spain
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Wang Q, Sun Z, Du L, Xu C, Wang Y, Yang B, He N, Wang J, Ji K, Liu Y, Liu Q. Melatonin Sensitizes Human Colorectal Cancer Cells to γ-ray Ionizing Radiation In Vitro and In Vivo. Int J Mol Sci 2018; 19:ijms19123974. [PMID: 30544713 PMCID: PMC6320774 DOI: 10.3390/ijms19123974] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/04/2018] [Accepted: 12/07/2018] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer is the most commonly reported gastrointestinal malignancy, with a recent, rapid increase of the annual incidence all over the world. Enhancing the radiosensitivity of cancer cells while preserving the health of normal cells is one of the most important tasks in clinical radiobiology. However, resistance to radiotherapy for colorectal cancer greatly decreases the therapeutic outcome. Melatonin (N-acetyl-5-methoxytryptamine), a natural secretory product that the pineal gland in the brain normally produces, has been reported to have anticancer properties. In the study, we investigated the combination of melatonin with radiotherapy as a treatment for colorectal cancer. We firstly explored the anti-tumor activity of melatonin combined with ionizing radiation (IR) against colorectal carcinoma in vitro. It was found that melatonin effectively inhibited human colorectal carcinoma cell line HCT 116 cellular proliferation, colony formation rate and cell migration counts following IR. Increasing the radiosensitivity of colorectal cancer cells by melatonin treatment was found to be associated with cell cycle arrest in the G2/M phase, downregulation of proteins involved in DNA double-strand break repair and activation of the caspase-dependent apoptotic pathway. Moreover, we also investigated the combined effect of IR and melatonin on colorectal tumor in vivo. Results from a tumor xenograft showed that melatonin plus IR treatment significantly suppressed tumor cell growth compared with melatonin or IR alone, resulting in a much higher tumor inhibition rate for the combined treatment. The data suggested that melatonin combined with IR could improve the radiosensitivity of colorectal cancer and thus enhance the therapeutic effect of the patients, implying melatonin could function as a potential sensitizer in tumor radiotherapy.
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Affiliation(s)
- Qin Wang
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Zhijuan Sun
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Liqing Du
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Chang Xu
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Yan Wang
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Bing Yang
- Department of Cellular Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China.
| | - Ningning He
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Jinhan Wang
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Kaihua Ji
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Yang Liu
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
| | - Qiang Liu
- Tianjin Key Lab of Radiation Medicine Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science and Peking Union Medical College, Tianjin 300192, China.
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Protective effect of polydatin on radiation-induced injury of intestinal epithelial and endothelial cells. Biosci Rep 2018; 38:BSR20180868. [PMID: 30333253 PMCID: PMC6239250 DOI: 10.1042/bsr20180868] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 09/26/2018] [Accepted: 10/01/2018] [Indexed: 11/17/2022] Open
Abstract
This study aimed to examine the radioprotective effect of polydatin (PD) on crypt and endothelial cells of the small intestines of C57BL/6 mice that received abdominal irradiation (IR). Mice were treated with 6 MV X-ray (20 Gy) abdominal IR at a dose rate of 200 cGy/min. Thirty minutes before or after IR, mice were intraperitoneally injected with PD. The rate of survival of the mice at 30 days after IR was determined. The duodenum (upper small intestine), jejunum (middle small intestine), and ileum (lower small intestine) were collected and subjected to hematoxylin and eosin staining. Tissue sample sections were analyzed through light microscopy, and the lengths of at least 20 intestinal villi were measured in each group; the average number of crypts was obtained from 10 intestinal samples in each group. Microvessel density was assessed using CD31-positive (brown) vascular endothelial cells/cell clusters. FHs74Int cell proliferation was measured using the CCK-8 assay. PD administration (25 mg/kg) before IR was the most effective in prolonging the survival of C57BL/6 mice. PD reduced radiation-induced injury of intestinal villi, prevented loss of crypts, increased intestinal crypt growth, protected against IR-induced intestinal injury, and enhanced the proliferative potential and reduced the apoptosis of FHs74Int cells after IR. Moreover, PD increased small intestinal MVD and reduced the apoptosis of intestinal microvascular endothelial cells in mice after IR. Therefore, PD was found to be able to protect the two types of cells from radiation damage and to thus alleviate radiation-induced injury of small intestine.
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The protective effects of melatonin on blood cell counts of rectal cancer patients following radio-chemotherapy: a randomized controlled trial. Clin Transl Oncol 2018; 21:745-752. [PMID: 30421178 DOI: 10.1007/s12094-018-1977-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/29/2018] [Indexed: 10/27/2022]
Abstract
PURPOSE We aimed to examine the radioprotective effects of melatonin on the blood cell counts of patients with rectum cancer undergoing radiotherapy. MATERIALS AND METHODS This double-blind placebo-controlled study was conducted on 60 rectal cancer patients who were referred to Rajaii Hospital of Babolsar, Iran. An equal number of patients were randomly assigned to the control group which received placebo and study group which received 20 mg melatonin a day as an intervention. The melatonin was administered 5 days a week for 28 days. Blood samples were taken before melatonin received on day 1 and also day 28; then, to measure the changes in blood cell counts representing our primary outcomes, the samples were analyzed by Sysmex K810i auto-analyzer. RESULTS Our results showed that the platelet, white blood cells, lymphocyte, and neutrophil population reduction induced by radiotherapy were slighter or even insignificant in melatonin recipients compared to control. However, the difference between red blood cells in both groups was not significant. CONCLUSION Our results are indicating that melatonin could prevent or minimize the unfavorable effects of radiotherapy on blood cell count reductions by attenuating the adverse influence of radiation, probably through stimulation of cellular antioxidant potential as previously reported in animal models. IRANIAN REGISTRY OF CLINICAL TRIALS (IRCT) Registry No. IRCT2016021626586N1.
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Najafi M, Salehi E, Farhood B, Nashtaei MS, Hashemi Goradel N, Khanlarkhani N, Namjoo Z, Mortezaee K. Adjuvant chemotherapy with melatonin for targeting human cancers: A review. J Cell Physiol 2018; 234:2356-2372. [PMID: 30192001 DOI: 10.1002/jcp.27259] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 07/20/2018] [Indexed: 12/26/2022]
Abstract
Melatonin is a multifunctional hormone that has long been known for its antitumoral effects. An advantage of the application of melatonin in cancer therapy is its ability to differentially influence tumors from normal cells. In this review, the roles of melatonin adjuvant therapy in human cancer are discussed. Combination of melatonin with chemotherapy could provide synergistic antitumoral outcomes and resolve drug resistance in affected patients. This combination reduces the dosage for chemotherapeutic agents with the subsequent attenuation of side effects related to these drugs on normal cells around tumor and on healthy organs. The combination therapy increases the rate of survival and improves the quality of life in affected patients. Cancer cell viability is reduced after application of the combinational melatonin therapy. Melatonin does all these functions by adjusting the signals involved in cancer progression, re-establishing the dark/light circadian rhythm, and disrupting the redox system for cancer cells. To achieve effective therapeutic outcomes, melatonin concentration along with the time of incubation for this indoleamine needs to be adjusted. Importantly, a special focus is required to be made on choosing an appropriate chemotherapy agent for using in combination with melatonin. Because of different sensitivities of cancer cells for melatonin combination therapy, cancer-specific targeted therapy is also needed to be considered. For this review, the PubMed database was searched for relevant articles based on the quality of journals, the novelty of articles published by the journals, and the number of citations per year focusing only on human cancers.
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Affiliation(s)
- Masoud Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Eniseh Salehi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Farhood
- Departments of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Maryam Shabani Nashtaei
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Infertility Department, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Nasser Hashemi Goradel
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda Khanlarkhani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Zeinab Namjoo
- Department of Anatomy and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Keywan Mortezaee
- Department of Anatomy, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
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Farhood B, Goradel NH, Mortezaee K, Khanlarkhani N, Salehi E, Nashtaei MS, Mirtavoos-Mahyari H, Motevaseli E, Shabeeb D, Musa AE, Najafi M. Melatonin as an adjuvant in radiotherapy for radioprotection and radiosensitization. Clin Transl Oncol 2018; 21:268-279. [PMID: 30136132 DOI: 10.1007/s12094-018-1934-0] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 08/02/2018] [Indexed: 12/11/2022]
Abstract
It is estimated that more than half of cancer patients undergo radiotherapy during the course of their treatment. Despite its beneficial therapeutic effects on tumor cells, exposure to high doses of ionizing radiation (IR) is associated with several side effects. Although improvements in radiotherapy techniques and instruments could reduce these side effects, there are still important concerns for cancer patients. For several years, scientists have been trying to modulate tumor and normal tissue responses to IR, leading to an increase in therapeutic ratio. So far, several types of radioprotectors and radiosensitizers have been investigated in experimental studies. However, high toxicity of chemical sensitizers or possible tumor protection by radioprotectors creates a doubt for their clinical applications. On the other hand, the protective effects of these radioprotectors or sensitizer effects of radiosensitizers may limit some type of cancers. Hence, the development of some radioprotectors without any protective effect on tumor cells or low toxic radiosensitizers can help improve therapeutic ratio with less side effects. Melatonin as a natural body hormone is a potent antioxidant and anti-inflammatory agent that shows some anti-cancer properties. It is able to neutralize different types of free radicals produced by IR or pro-oxidant enzymes which are activated following exposure to IR and plays a key role in the protection of normal tissues. In addition, melatonin has shown the ability to inhibit long-term changes in inflammatory responses at different levels, thereby ameliorating late side effects of radiotherapy. Fortunately, in contrast to classic antioxidants, some in vitro studies have revealed that melatonin has a potent anti-tumor activity when used alongside irradiation. However, the mechanisms of its radiosensitive effect remain to be elucidated. Studies suggested that the activation of pro-apoptosis gene, such as p53, changes in the metabolism of tumor cells, suppression of DNA repair responses as well as changes in biosynthesis of estrogen in breast cancer cells are involved in this process. In this review, we describe the molecular mechanisms for radioprotection and radiosensitizer effects of melatonin. Furthermore, some other proposed mechanisms that may be involved are presented.
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Affiliation(s)
- B Farhood
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - N H Goradel
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - K Mortezaee
- Department of Anatomy, School of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - N Khanlarkhani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - E Salehi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - M S Nashtaei
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Infertility Department, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - H Mirtavoos-Mahyari
- Department of Medical Genetics, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - E Motevaseli
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - D Shabeeb
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, International Campus, Tehran, Iran.,Department of Physiology, College of Medicine, University of Misan, Amarah, Iraq
| | - A E Musa
- Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical Sciences, International Campus, Tehran, Iran.,Research Center for Molecular and Cellular Imaging, Tehran University of Medical Sciences, Tehran, Iran
| | - M Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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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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Galano A, Reiter RJ. Melatonin and its metabolites vs oxidative stress: From individual actions to collective protection. J Pineal Res 2018; 65:e12514. [PMID: 29888508 DOI: 10.1111/jpi.12514] [Citation(s) in RCA: 197] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/05/2018] [Indexed: 12/11/2022]
Abstract
Oxidative stress (OS) represents a threat to the chemical integrity of biomolecules including lipids, proteins, and DNA. The associated molecular damage frequently results in serious health issues, which justifies our concern about this phenomenon. In addition to enzymatic defense mechanisms, there are compounds (usually referred to as antioxidants) that offer chemical protection against oxidative events. Among them, melatonin and its metabolites constitute a particularly efficient chemical family. They offer protection against OS as individual chemical entities through a wide variety of mechanisms including electron transfer, hydrogen transfer, radical adduct formation, and metal chelation, and by repairing biological targets. In fact, many of them including melatonin can be classified as multipurpose antioxidants. However, what seems to be unique to the melatonin's family is their collective effects. Because the members of this family are metabolically related, most of them are expected to be present in living organisms wherever melatonin is produced. Therefore, the protection exerted by melatonin against OS may be viewed as a result of the combined antioxidant effects of the parent molecule and its metabolites. Melatonin's family is rather exceptional in this regard, offering versatile and collective antioxidant protection against OS. It certainly seems that melatonin is one of the best nature's defenses against oxidative damage.
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Affiliation(s)
- Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, México City, México
| | - Russel J Reiter
- Department of Cellular and Structural Biology, UT Health Science Center, San Antonio, TX, USA
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63
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Griffin F, Marignol L. Therapeutic potential of melatonin for breast cancer radiation therapy patients. Int J Radiat Biol 2018. [PMID: 29521142 DOI: 10.1080/09553002.2018.1446227] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Melatonin is an endogenous hormone primarily known for its action on the circadian rhythms. But pre-clinical studies are reporting both its radioprotective and radiosensitizing properties, possibly mediated through an interaction between melatonin and the regulation of estrogens. Melatonin pre-treatment prior to ionizing radiation was associated with a decrease in cell proliferation and an increase in p53 mRNA expression, leading to an increase in the radiosensitivity of breast cancer cells. At the same time, a decrease in radiation-induced side effects was described in breast cancer patients and in rodent models. This review examines the potential for melatonin to improve the therapeutic outcomes of breast radiation therapy, specifically estrogen receptor positive patients. Evidence suggests that melatonin may offer a novel, non-toxic and cheap adjuvant therapy to improve the existing treatment modalities. But further research is required in the clinical setting before a clear understanding of its therapeutic benefits is determined.
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Affiliation(s)
- Fiona Griffin
- a Applied Radiation Therapy Trinity, Discipline of Radiation therapy , Trinity College Dublin , Dublin , Ireland
| | - Laure Marignol
- a Applied Radiation Therapy Trinity, Discipline of Radiation therapy , Trinity College Dublin , Dublin , Ireland
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64
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Posadzki PP, Bajpai R, Kyaw BM, Roberts NJ, Brzezinski A, Christopoulos GI, Divakar U, Bajpai S, Soljak M, Dunleavy G, Jarbrink K, Nang EEK, Soh CK, Car J. Melatonin and health: an umbrella review of health outcomes and biological mechanisms of action. BMC Med 2018; 16:18. [PMID: 29397794 PMCID: PMC5798185 DOI: 10.1186/s12916-017-1000-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 12/20/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Our aims were to evaluate critically the evidence from systematic reviews as well as narrative reviews of the effects of melatonin (MLT) on health and to identify the potential mechanisms of action involved. METHODS An umbrella review of the evidence across systematic reviews and narrative reviews of endogenous and exogenous (supplementation) MLT was undertaken. The Oxman checklist for assessing the methodological quality of the included systematic reviews was utilised. The following databases were searched: MEDLINE, EMBASE, Web of Science, CENTRAL, PsycINFO and CINAHL. In addition, reference lists were screened. We included reviews of the effects of MLT on any type of health-related outcome measure. RESULTS Altogether, 195 reviews met the inclusion criteria. Most were of low methodological quality (mean -4.5, standard deviation 6.7). Of those, 164 did not pool the data and were synthesised narratively (qualitatively) whereas the remaining 31 used meta-analytic techniques and were synthesised quantitatively. Seven meta-analyses were significant with P values less than 0.001 under the random-effects model. These pertained to sleep latency, pre-operative anxiety, prevention of agitation and risk of breast cancer. CONCLUSIONS There is an abundance of reviews evaluating the effects of exogenous and endogenous MLT on health. In general, MLT has been shown to be associated with a wide variety of health outcomes in clinically and methodologically heterogeneous populations. Many reviews stressed the need for more high-quality randomised clinical trials to reduce the existing uncertainties.
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Affiliation(s)
- Pawel P Posadzki
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore.
| | - Ram Bajpai
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Bhone Myint Kyaw
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Nicola J Roberts
- School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, G4 0BA, UK
| | - Amnon Brzezinski
- The Hebrew University Medical School, Hadassah Hebrew University Medical Center, 91120, Jerusalem, Israel
| | - George I Christopoulos
- Nanyang Business School, Division of Strategy Management and Organisation, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ushashree Divakar
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Shweta Bajpai
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Michael Soljak
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Gerard Dunleavy
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Krister Jarbrink
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Ei Ei Khaing Nang
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore
| | - Chee Kiong Soh
- School of Civil and Environmental Engineering, College of Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Josip Car
- Centre for Population Health Sciences, 11 Mandalay Road, Level 18 Clinical Sciences Building, Lee Kong Chian School of Medicine, Novena Campus, Nanyang Technological University , Singapore, 308232, Singapore.,Global eHealth Unit, School of Public Health, Imperial College London, London, W6 8RP, UK
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Melatonin as a potential anticarcinogen for non-small-cell lung cancer. Oncotarget 2018; 7:46768-46784. [PMID: 27102150 PMCID: PMC5216835 DOI: 10.18632/oncotarget.8776] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/31/2016] [Indexed: 12/23/2022] Open
Abstract
Non-small-cell lung cancer (NSCLC) is a leading cause of death from cancer worldwide. Melatonin, an indoleamine discovered in the pineal gland, exerts pleiotropic anticancer effects against a variety of cancer types. In particular, melatonin may be an important anticancer drug in the treatment of NSCLC. Herein, we review the correlation between the disruption of the melatonin rhythm and NSCLC incidence; we also evaluate the evidence related to the effects of melatonin in inhibiting lung carcinogenesis. Special focus is placed on the oncostatic effects of melatonin, including anti-proliferation, induction of apoptosis, inhibition of invasion and metastasis, and enhancement of immunomodulation. We suggest the drug synergy of melatonin with radio- or chemotherapy for NSCLC could prove to be useful. Taken together, the information complied herein may serve as a comprehensive reference for the anticancer mechanisms of melatonin against NSCLC, and may be helpful for the design of future experimental research and for advancing melatonin as a therapeutic agent for NSCLC.
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Menéndez-Menéndez J, Martínez-Campa C. Melatonin: An Anti-Tumor Agent in Hormone-Dependent Cancers. Int J Endocrinol 2018; 2018:3271948. [PMID: 30386380 PMCID: PMC6189685 DOI: 10.1155/2018/3271948] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/30/2018] [Accepted: 08/12/2018] [Indexed: 02/07/2023] Open
Abstract
Melatonin (N-acetyl-5-methoxytryptamine) is a hormone synthesized and secreted by the pineal gland mainly during the night, since light exposure suppresses its production. Initially, an implication of this indoleamine in malignant disease was described in endocrine-responsive breast cancer. Data from several clinical trials and multiple experimental studies performed both in vivo and in vitro have documented that the pineal hormone inhibits endocrine-dependent mammary tumors by interfering with the estrogen signaling-mediated transcription, therefore behaving as a selective estrogen receptor modulator (SERM). Additionally, melatonin regulates the production of estradiol through the control of the enzymes involved in its synthesis, acting as a selective estrogen enzyme modulator (SEEM). Many more mechanisms have been proposed during the past few years, including signaling triggered after activation of the membrane melatonin receptors MT-1 and MT-2, or else intracellular actions targeting molecules such as calmodulin, or binding intranuclear receptors. Similar results have been obtained in prostate (regulation of enzymes involved in androgen synthesis and modulation of androgen receptor levels and activity) and ovary cancer. Thus, tumor metabolism, gene expression, or epigenetic modifications are modulated, cell growth is impaired and angiogenesis and metastasis are inhibited. In the last decade, many more reports have demonstrated that melatonin is a promising adjuvant molecule with many potential beneficial consequences when included in chemotherapy or radiotherapy protocols designed to treat endocrine-responsive tumors. Therefore, in this state-of-the-art review, we aim to compile the knowledge about the oncostatic actions of the indoleamine in hormone-dependent tumors, and the latest findings concerning melatonin actions when administered in combination with radio- or chemotherapy in breast, prostate, and ovary cancers. As melatonin has no toxicity, it may be well deserve to be considered as an endogenously generated agent helpful in cancer prevention and treatment.
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Affiliation(s)
- Javier Menéndez-Menéndez
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Valdecilla (IDIVAL), 39011 Santander, Spain
| | - Carlos Martínez-Campa
- Department of Physiology and Pharmacology, School of Medicine, University of Cantabria and Instituto de Investigación Valdecilla (IDIVAL), 39011 Santander, Spain
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Radioprotective effects of Silymarin on the sperm parameters of NMRI mice irradiated with γ-rays. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 178:489-495. [PMID: 29232573 DOI: 10.1016/j.jphotobiol.2017.12.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/02/2017] [Accepted: 12/04/2017] [Indexed: 12/21/2022]
Abstract
Free radicals and reactive oxygen species (ROS) are generated using various endogenous systems or from external sources such as exposure to different physiochemicals. Ionizing radiation damage to the cell can be caused by the direct or indirect effects of radiotherapy processes. Silymarin (SM), a flavanolignan compound, has been identified as a natural potent antioxidant with cytoprotection activities due to scavenging free radicals. The aim of the present study was to evaluate the radioprotective effect of SM on sperm parameters of mice induced by γ-rays. A total number of 40 adult, male NMRI mice were randomly divided into four equal groups. The control group was neither treated with SM nor irradiated by γ-rays. The second group was only irradiated with 2Gy of γ-rays. The third group was firstly treated with 50mg/kg of SM for 7 consecutive days, and one day later, last injections were irradiated by 2Gy of γ-rays. The fourth groups received only 50mg/kg of SM for 7 consecutive days. All the animals were treated intraperitoneally. Histopathological and morphometrical examinations were performed. The data were analyzed using ANOVA and Tukey post hoc test. A value of p<0.05 was considered significant. The results showed that in the radiation-only group when compared with those treated with SM and irradiated, a significant different was observed in testicular parameters and DNA damage (p<0.05). In conclusion, SM can be considered as a promising herbal radioprotective agent in complementary medicine which may play an important role to protect normal spermatocytes against possible effects of γ-radiation-induced cellular damage.
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68
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Xu XJ, Wang SM, Jin Y, Hu YT, Feng K, Ma ZZ. Melatonin delays photoreceptor degeneration in a mouse model of autosomal recessive retinitis pigmentosa. J Pineal Res 2017; 63. [PMID: 28580724 DOI: 10.1111/jpi.12428] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 05/31/2017] [Indexed: 12/28/2022]
Abstract
Retinitis pigmentosa (RP) comprises a group of incurable inherited retinal degenerations. Targeting common processes, instead of mutation-specific treatment, has proven to be an innovative strategy to combat debilitating retinal degeneration. Growing evidence indicates that melatonin possesses a potent activity against neurodegenerative disorders by mitigating cell damage associated with apoptosis and inflammation. Given the pleiotropic role of melatonin in central nervous system, the aim of the present study was to investigate whether melatonin would afford protection against retinal degeneration in autosomal recessive RP (arRP). Rd10, a well-characterized murine model of human arRP, received daily intraperitoneal injection of melatonin (15 mg/kg) between postnatal day (P) 13 and P30. Retinas treated with melatonin or vehicle were harvested for analysis at P30 and P45, respectively. The findings showed that melatonin could dampen the photoreceptors death and delay consequent retinal degeneration. We also observed that melatonin weakened the expression of glial fibrillary acidic protein (GFAP) in Müller cells. Additionally, melatonin could alleviate retinal inflammatory response visualized by IBA1 staining, which was further corroborated by downregulation of inflammation-related genes, such as tumor necrosis factor alpha (Tnf-α), chemokine (C-C motif) ligand 2 (Ccl2), and chemokine (C-X-C motif) ligand 10 (Cxcl10). These data revealed that melatonin could ameliorate retinal degeneration through potentially attenuating apoptosis, reactive gliosis, and microglial activation in rd10 mice. Moreover, these results suggest melatonin as a promising agent improving photoreceptors survival in human RP.
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Affiliation(s)
- Xiao-Jian Xu
- Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Peking University Third Hospital, Beijing, China
| | - Shu-Min Wang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ying Jin
- Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Peking University Third Hospital, Beijing, China
| | - Yun-Tao Hu
- Department of Ophthalmology, Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing, China
| | - Kang Feng
- Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Peking University Third Hospital, Beijing, China
| | - Zhi-Zhong Ma
- Department of Ophthalmology, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Peking University Third Hospital, Beijing, China
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Mishra K, Alsbeih G. Appraisal of biochemical classes of radioprotectors: evidence, current status and guidelines for future development. 3 Biotech 2017; 7:292. [PMID: 28868219 DOI: 10.1007/s13205-017-0925-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 08/21/2017] [Indexed: 12/13/2022] Open
Abstract
The search for efficient radioprotective agents to protect from radiation-induced toxicity, due to planned or accidental radiation exposure, is still ongoing worldwide. Despite decades of research and development of widely different biochemical classes of natural and derivative compounds, a safe and effective radioprotector is largely unmet. In this comprehensive review, we evaluated the evidence for the radioprotective performance of classical thiols, vitamins, minerals, dietary antioxidants, phytochemicals, botanical and bacterial preparations, DNA-binding agents, cytokines, and chelators including adaptogens. Where radioprotection was demonstrated, the compounds have shown moderate dose modifying factors ranging from 1.1 to 2.7. To date, only few compounds found way to clinic with limited margin of dose prescription due to side effects. Most of these compounds (amifostine, filgratism, pegfilgrastim, sargramostim, palifermin, recombinant salmonella flagellin, Prussian blue, potassium iodide) act primarily via scavenging of free radicals, modulation of oxidative stress, signal transduction, cell proliferation or enhance radionuclide elimination. However, the gain in radioprotection remains hampered with low margin of tolerance. Future development of more effective radioprotectors requires an appropriate nontoxic compound, a model system and biomarkers of radiation exposure. These are important to test the effectiveness of radioprotection on physiological tissues during radiotherapy and field application in cases of nuclear eventualities.
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Affiliation(s)
- Krishnanand Mishra
- Radiation Biology Section, Biomedical Physics Department, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Saudi Arabia
| | - Ghazi Alsbeih
- Radiation Biology Section, Biomedical Physics Department, King Faisal Specialist Hospital and Research Centre (KFSH&RC), Riyadh, Saudi Arabia
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Wang L, Li B, Li L, Xu F, Xu Z, Wei D, Feng Y, Wang Y, Jia D, Zhou Y. Ultrahigh-yield synthesis of N-doped carbon nanodots that down-regulate ROS in zebrafish. J Mater Chem B 2017; 5:7848-7860. [PMID: 32264386 DOI: 10.1039/c7tb01114h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Oxidative damage induced by accumulation of excessive reactive oxygen species (ROS) could result in increased chronic inflammation and thus ageing and age-related diseases. Carbonaceous nanodrugs hold great promise for ameliorating age-related diseases, and it is necessary to develop ultrahigh-yield synthesis of such nanodrugs. To improve the synthetic yield (less than 50%) of carbon nanodots (CNDs), the general choice is to screen precursors. However, no reliable concept for improving the yield has been explored over the past few decades. We are the first to propose the concept of using carbon-carbon double bonds to boost the synthetic yield and demonstrate record breaking ultrahigh-yield (85.9%) synthesis of N-doped CNDs. When the C[double bond, length as m-dash]C content increased from 14 to 56 mmol, the synthetic yield exhibited a 3.3-fold increase. Nitrogen elements are doped as pyridinic-like N and NH2, where conjugated π-systems as electron donors and pyridinic-like structures would benefit the potential down-regulated effect for ROS. N-doped CNDs exhibit an outstanding protective effect against oxidative stress via inhibiting exogenous and endogenous ROS generation, where the ROS in zebrafish are significantly reduced by 68%. Hence the concept of carbon-carbon double bond-boosted ultrahigh-yield synthesis of N-doped CNDs provides a promising strategy to be employed for carbonaceous nanodrugs aiming at preventing and curing ageing and age-related diseases.
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Affiliation(s)
- Lei Wang
- Institute for Advanced Ceramics, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150001, P. R. China.
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Ansari M, Karkhaneh A, Kheirollahi A, Emamgholipour S, Rafiee MH. The effect of melatonin on gene expression of calcitonin gene-related peptide and some proinflammatory mediators in patients with pure menstrual migraine. Acta Neurol Belg 2017; 117:677-685. [PMID: 28584969 DOI: 10.1007/s13760-017-0803-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 05/29/2017] [Indexed: 01/20/2023]
Abstract
The neuropeptide calcitonin gene-related peptide (CGRP), a potent vasoactive and a marker of trigeminal inflammation, has been considered as an important mediator in various types of migraine such as pure menstrual migraine. Earlier studies have shown that CGRP can modulate the synthesis and release of other inflammatory factor including nitric oxide (NO) and interleukin-1beta (IL-1β) from trigeminal ganglion glial cells. Exogenous melatonin protects the tissues from inflammatory damages. The goal of this study was to determine the anti-inflammatory effects of melatonin on the CGRP expression, inducible nitric oxide synthase (iNOS) activity, NO, and IL-1β release in cultured peripheral blood mononuclear cells (PBMCs) from pure menstrual migraine patients and healthy subjects. This study was performed on 12 pure menstrual migraine patients and 12 age-and sex-matched healthy subjects. PBMCs were isolated and treated with melatonin for 12 h at pharmacological dose. Gene expression was evaluated by real-time PCR. CGRP and IL-1β proteins in culture supernatant were determined by ELISA method. iNOS activity in PBMCs was determined by colorimetric assays. Total nitrite as an indicator of NO concentrations in the culture supernatants was measured using Griess method. We found that melatonin treatment significantly decreases mRNA expression of CGRP release, NO production, and iNOS activity in the patient groups. Taken together, it appears that melatonin reduces inflammation through decreasing CGRP level and iNOS activity in the patients with migraine; however, further studies are needed in this regard.
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Affiliation(s)
- Mohammad Ansari
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Azam Karkhaneh
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
- Reference Laboratory, Social Security Organization, Tehran, Iran.
| | - Asma Kheirollahi
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Solaleh Emamgholipour
- Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Onseng K, Johns NP, Khuayjarernpanishk T, Subongkot S, Priprem A, Hurst C, Johns J. Beneficial Effects of Adjuvant Melatonin in Minimizing Oral Mucositis Complications in Head and Neck Cancer Patients Receiving Concurrent Chemoradiation. J Altern Complement Med 2017; 23:957-963. [PMID: 28657801 DOI: 10.1089/acm.2017.0081] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVES Oral mucositis is a major cause of pain and delayed cancer treatment leading to poor survival in head and neck cancer patients receiving concurrent chemoradiation. The study evaluated the effect of adjuvant melatonin on minimizing oral mucositis complications to reduce these treatment delays and interruptions. DESIGN A randomized, double-blind, double dummy, placebo-controlled clinical trial. SETTING Ubon Ratchathani Cancer Hospital, Thailand. PARTICIPANTS Thirty-nine head and neck cancer patients receiving concurrent chemoradiation (5 days/week of radiation plus chemotherapy three or six cycles). METHODS Patients were randomized to receive 20 mg melatonin gargle (or matched placebo) before each irradiation, and 20 mg melatonin capsules (or matched placebo) taken nightly during 7 weeks of concurrent chemoradiation. Endpoints were oral mucositis events (incidence and time to grade 3 mucositis or grade 2 xerostomia), pain medication consumption and quality of life (QOL). RESULTS Melatonin group reported lower incidence of grade 3 oral mucositis (42% vs. 55%) and grade 2 xerostomia (20% vs. 21%); no statistical significance was detected. Melatonin regimen delayed onset of grade 3 mucositis (median 34 days vs. 50 days; p = 0.0318), allowing median time of 16 more patient visits before its onset and fewer interrupted treatments due to oral mucositis were reported (n = 1 vs. n = 5). There was no difference of grade 2 xerostomia (median 32 days vs. 50 days; p = 0.624). Morphine consumption was also reduced (median 57 mg vs. 0 mg; p = 0.0342), while QOL was comparable during the study period. CONCLUSION Adjuvant melatonin delayed the onset of oral mucositis, which enables uninterrupted cancer treatment and reduced the amount of morphine used for pain treatment.
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Affiliation(s)
- Kittipong Onseng
- 1 Melatonin Research Group, Faculty of Pharmaceutical Sciences, Khon Kaen University , Khon Kaen, Thailand
| | | | | | - Suphat Subongkot
- 3 Faculty of Pharmaceutical Sciences, Khon Kaen University , Khon Kaen, Thailand
| | - Aroonsri Priprem
- 3 Faculty of Pharmaceutical Sciences, Khon Kaen University , Khon Kaen, Thailand
| | - Cameron Hurst
- 4 Faculty of Medicine, Biostatistics Center, Chulalongkorn University , Bangkok, Thailand
| | - Jeffrey Johns
- 1 Melatonin Research Group, Faculty of Pharmaceutical Sciences, Khon Kaen University , Khon Kaen, Thailand
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Abbaszadeh A, Haddadi GH, Haddadi Z. Melatonin Role in Ameliorating Radiation-induced Skin Damage: From Theory to Practice (A Review of Literature). J Biomed Phys Eng 2017; 7:127-136. [PMID: 28580334 PMCID: PMC5447249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/31/2017] [Indexed: 06/07/2023]
Abstract
Normal skin is composed of epidermis and dermis. Skin is susceptible to radiation damage because it is a continuously renewing organ containing rapidly proliferating mature cells. Radiation burn is a damage to the skin or other biological tissues caused by exposure to radiofrequency energy or ionizing radiation. Acute skin reaction is the most frequently occurring side effect of radiation therapy. Generally, any chemical/biological agent given before or at the time of irradiation to prevent or ameliorate damage to normal tissues is called a radioprotector. Melatonin is a highly lipophilic substance that easily penetrates organic membranes and therefore is able to protect important intracellular structures including mitochondria and DNA against oxidative damage directly at the sites where such a kind of damage would occur. Melatonin leads to an increase in the molecular level of some important antioxidative enzymes such as superoxide, dismotase and glutation-peroxidase, and also a reduction in synthetic activity of nitric oxide. There is a large body of evidence which proves the efficacy of Melatonin in ameliorating UV and X ray-induced skin damage. We propose that, in the future, Melatonin would improve the therapeutic ratio in radiation oncology and ameliorate skin damage more effectively when administered in optimal and non-toxic doses.
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Affiliation(s)
- A Abbaszadeh
- Department of Radiology and Radiobiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - G H Haddadi
- Department of Radiology and Radiobiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
- Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
| | - Z Haddadi
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
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Oral Mucositis: Melatonin Gel an Effective New Treatment. Int J Mol Sci 2017; 18:ijms18051003. [PMID: 28481279 PMCID: PMC5454916 DOI: 10.3390/ijms18051003] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/19/2017] [Accepted: 05/03/2017] [Indexed: 12/12/2022] Open
Abstract
The current treatment for cervico-facial cancer involves radio and/or chemotherapy. Unfortunately, cancer therapies can lead to local and systemic complications such as mucositis, which is the most common dose-dependent complication in the oral cavity and gastrointestinal tract. Mucositis can cause a considerably reduced quality of life in cancer patients already suffering from physical and psychological exhaustion. However, the role of melatonin in the treatment of mucositis has recently been investigated, and offers an effective alternative therapy in the prevention and/or management of radio and/or chemotherapy-induced mucositis. This review focuses on the pathobiology and management of mucositis in order to improve the quality of cancer patients' lives.
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Reiter RJ, Rosales-Corral SA, Tan DX, Acuna-Castroviejo D, Qin L, Yang SF, Xu K. Melatonin, a Full Service Anti-Cancer Agent: Inhibition of Initiation, Progression and Metastasis. Int J Mol Sci 2017; 18:E843. [PMID: 28420185 PMCID: PMC5412427 DOI: 10.3390/ijms18040843] [Citation(s) in RCA: 296] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/05/2017] [Accepted: 04/06/2017] [Indexed: 12/21/2022] Open
Abstract
There is highly credible evidence that melatonin mitigates cancer at the initiation, progression and metastasis phases. In many cases, the molecular mechanisms underpinning these inhibitory actions have been proposed. What is rather perplexing, however, is the large number of processes by which melatonin reportedly restrains cancer development and growth. These diverse actions suggest that what is being observed are merely epiphenomena of an underlying more fundamental action of melatonin that remains to be disclosed. Some of the arresting actions of melatonin on cancer are clearly membrane receptor-mediated while others are membrane receptor-independent and involve direct intracellular actions of this ubiquitously-distributed molecule. While the emphasis of melatonin/cancer research has been on the role of the indoleamine in restraining breast cancer, this is changing quickly with many cancer types having been shown to be susceptible to inhibition by melatonin. There are several facets of this research which could have immediate applications at the clinical level. Many studies have shown that melatonin's co-administration improves the sensitivity of cancers to inhibition by conventional drugs. Even more important are the findings that melatonin renders cancers previously totally resistant to treatment sensitive to these same therapies. Melatonin also inhibits molecular processes associated with metastasis by limiting the entrance of cancer cells into the vascular system and preventing them from establishing secondary growths at distant sites. This is of particular importance since cancer metastasis often significantly contributes to death of the patient. Another area that deserves additional consideration is related to the capacity of melatonin in reducing the toxic consequences of anti-cancer drugs while increasing their efficacy. Although this information has been available for more than a decade, it has not been adequately exploited at the clinical level. Even if the only beneficial actions of melatonin in cancer patients are its ability to attenuate acute and long-term drug toxicity, melatonin should be used to improve the physical wellbeing of the patients. The experimental findings, however, suggest that the advantages of using melatonin as a co-treatment with conventional cancer therapies would far exceed improvements in the wellbeing of the patients.
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Affiliation(s)
- Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health, San Antonio, TX 78229, USA.
| | - Sergio A Rosales-Corral
- Centro de Investigacion Biomedica de Occidente, Del Instituto Mexicano del Seguro Social, Guadalajara 44340, Mexico.
| | - Dun-Xian Tan
- Department of Cell Systems and Anatomy, UT Health, San Antonio, TX 78229, USA.
| | | | - Lilan Qin
- Department of Cell Systems and Anatomy, UT Health, San Antonio, TX 78229, USA.
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan, Medical University, Taichung 40201, Taiwan.
| | - Kexin Xu
- Department of Molecular Medicine, UT Health, San Antonio, TX 78229, USA.
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Beneficial Effects of Exogenous Melatonin in Acute Staphylococcus aureus and Escherichia coli Infection-Induced Inflammation and Associated Behavioral Response in Mice After Exposure to Short Photoperiod. Inflammation 2017; 39:2072-2093. [PMID: 27682182 DOI: 10.1007/s10753-016-0445-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The administration of melatonin during acute bacterial infection was evaluated in this study. Mice pre-exposed to normal photoperiodic (NP), short photoperiodic (SP), and long photoperiodic (LP) day lengths were infected separately with live Staphylococcus aureus (5 × 106 cells/ml) or Escherichia coli (2.5 × 107 colony-forming units/ml) and treated with melatonin (10 mg/kg body weight). Behavioral studies were performed before bacterial infection and after melatonin administration. In mice pre-exposed to SP, exogenous melatonin administration resulted in better clearance of bacteria from blood and behavioral improvement. Reduced glutathione content and superoxide dismutase activities were increased, with concomitant decrease in lipid peroxidation content and catalase activities in the liver, brain, and spleen after exogenous melatonin administration. The overproduction of tumor necrosis factor-α, interferon-γ, and interleukin-6 during acute bacterial infection in mice exposed to different photoperiods was probably regulated by the administration of exogenous melatonin, by reducing neutrophil recruitment to spleen, expression of inducible nitric oxide synthase and cyclooxygenase-2 in hypothalamus, and C-reactive protein in the serum, and was also associated with improved behavioral response. Photoperiodic variations in inflammatory and oxidative stress markers might be correlated to serum melatonin and corticosterone levels. This study suggests that the administration of melatonin during SP exposure is protective in infection-induced inflammation than NP and LP exposure.
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Tong J, Sheng S, Sun Y, Li H, Li WP, Zhang C, Chen ZJ. Melatonin levels in follicular fluid as markers for IVF outcomes and predicting ovarian reserve. Reproduction 2017; 153:443-451. [DOI: 10.1530/rep-16-0641] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/26/2016] [Accepted: 01/06/2017] [Indexed: 01/09/2023]
Abstract
Good-quality oocytes are critical for the success of in vitro fertilization (IVF), but, to date, there is no marker of ovarian reserve available that can accurately predict oocyte quality. Melatonin exerts its antioxidant actions as a strong radical scavenger that might affect oocyte quality directly as it is the most potent antioxidant in follicular fluid. To investigate the precise role of endogenous melatonin in IVF outcomes, we recruited 61 women undergoing treatment cycles of IVF or intracytoplasmic sperm injection (ICSI) procedures and classified them into three groups according to their response to ovarian stimulation. Follicular fluid was collected to assess melatonin levels using a direct RIA method. We found good correlations between melatonin levels in follicular fluid with age, anti-Müllerian hormone (AMH) and baseline follicle-stimulating hormone (bFSH), all of which have been used to predict ovarian reserve. Furthermore, as melatonin levels correlated to IVF outcomes, higher numbers of oocytes were collected from patients with higher melatonin levels and consequently the number of oocytes fertilized, zygotes cleaved, top quality embryos on D3, blastocysts obtained and embryos suitable for transplantation was higher. The blastocyst rate increased in concert with the melatonin levels across the gradient between the poor response group and the high response group. These results demonstrated that the melatonin levels in follicular fluid is associated with both the quantity and quality of oocytes and can predict IVF outcomes as well making them highly relevant biochemical markers of ovarian reserve.
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Valizadeh M, Shirazi A, Izadi P, Tavakkoly Bazzaz J, Rezaeejam H. Expression Levels of Two DNA Repair-related Genes under 8 Gy Ionizing Radiation and 100 Mg/Kg Melatonin Delivery In Rat Peripheral Blood. J Biomed Phys Eng 2017; 7:27-36. [PMID: 28451577 PMCID: PMC5401131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 02/20/2017] [Indexed: 10/26/2022]
Abstract
BACKGROUND After radiation therapy (RT), some health hazards including DNA damages may occur where melatonin can play a protective role due to free radical generation. On the other hand, serious accidental overexposures may occur during RT due to nuclear accidents which necessitate the need for study on exposure to high-dose radiations during treatments. OBJECTIVE The aim of this study was to study the expression level of two genes in non-homologous end joining (NHEJ) pathways named Xrcc4 and Xrcc6 (Ku70) in order to examine the effect of melatonin on repair of DNA double-strand breaks (BSBs) caused by 8Gy ionizing radiation. METHODS One hundred eight male Wistar rats were irradiated with a whole body gamma radiation dose of 8Gy with or without melatonin pretreatments. They were divided into six different groups of control, 100 mg/kg melatonin alone, 8Gy irradiation alone, vehicle alone, vehicle plus 8Gy irradiation and 100 mg/kg melatonin plus 8Gy irradiation. Peripheral blood samples were collected at 8, 24 and 48 h after irradiation. Ku70 and Xrcc4 gene expression were evaluated by real-time quantitative polymerase chain reaction (qPCR) technique and analyzed by one-way ANOVA test. RESULTS Expression of Ku70 and Xrcc4 genes normalized against Hprt gene showed significant difference in melatonin plus irradiation group at 8h compared to the control group (p<0.05). At 24h post irradiation, gene expression changes were significantly upregulated in irradiation-alone group as well as melatonin plus irradiation group (p<0.05). No significant change was found in any groups compared to control group at 48 h time point. CONCLUSION We concluded that, by increasing expression level of Ku70 and Xrcc4 genes, 100 mg/kg melatonin administration 8 and 24 h before 8 Gyionizing radiation can significantly affect the repair of DNA DSBs in NHEJ pathway.
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Affiliation(s)
- M. Valizadeh
- Department of Medical Physics and Biomedical Engineering, Tehran University of Medical Sciences, Tehran, Iran
| | - A. Shirazi
- Department of Medical Physics and Biomedical Engineering, Tehran University of Medical Sciences, Tehran, Iran
| | - P. Izadi
- Department of Medical Genetics, Tehran University of Medical Sciences, Tehran, Iran
| | - J. Tavakkoly Bazzaz
- Department of Medical Genetics, Tehran University of Medical Sciences, Tehran, Iran
| | - H. Rezaeejam
- Department of Radiology, Faculty of Allied Medical School, Zanjan University of Medical Sciences, Zanjan, Iran
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Li W, Wang Z, Chen Y, Wang K, Lu T, Ying F, Fan M, Li Z, Wu J. Melatonin treatment induces apoptosis through regulating the nuclear factor-κB and mitogen-activated protein kinase signaling pathways in human gastric cancer SGC7901 cells. Oncol Lett 2017; 13:2737-2744. [PMID: 28454460 DOI: 10.3892/ol.2017.5785] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 12/09/2016] [Indexed: 12/13/2022] Open
Abstract
Melatonin, which is synthesized by the pineal gland and released into the blood, exhibits antitumor properties. However, the mechanisms underlying these effects, particularly in stomach cancer, remain unknown. In the present study, the effect of melatonin on the nuclear factor (NF)-κB signaling pathway and the mitogen-activated protein kinase signaling pathway, involving p38 and c-Jun-N-terminal kinase (JNK), were investigated in SGC7901 gastric cancer cells. In addition, the effect of melatonin on the survival, migration and apoptosis of these cells was investigated in vitro in order to evaluate the use of melatonin for the treatment of gastric cancer. The results of the present study revealed that melatonin decreased the viability and migration of SGC7901 cells. Furthermore, melatonin induced apoptosis. Melatonin was identified to elevate the expression levels of phosphorylated (p)-p38 and p-JNK protein, and decrease the expression level of nucleic p-p65. These results suggest that the protein levels of p65, p38 and JNK are associated with the survival of SGC7901 cells following treatment with melatonin. The optimal concentration of melatonin was demonstrated to be 2 mM, which significantly induced apoptosis following a 24 h treatment period. These findings suggest that conflicting growth signals in cells may inhibit the efficacy of melatonin in the treatment of gastric cancer. Therefore, adjunct therapy would be required to improve the efficacy of melatonin in the treatment of cancer.
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Affiliation(s)
- Weimin Li
- Department of Gastroenterology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310000, P.R. China.,Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhonglue Wang
- Department of Gastroenterology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310000, P.R. China
| | - Yina Chen
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Kaijing Wang
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China.,Department of Ultrasonography, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Ting Lu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China.,Department of Gastroenterology, Ningbo Medical Center Lihuili Eastern Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Fei Ying
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China.,Department of Gastroenterology, Xianju People's Hospital, Taizhou, Zhejiang 317300, P.R. China
| | - Mengdi Fan
- Department of Endocrinology, Zhejiang University International Hospital, Hangzhou, Zhejiang 310000, P.R. China
| | - Zhiyin Li
- Department of Gastroenterology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310000, P.R. China
| | - Jiansheng Wu
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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Fardid R, Salajegheh A, Mosleh-Shirazi MA, Sharifzadeh S, Okhovat MA, Najafi M, Rezaeyan A, Abaszadeh A. Melatonin Ameliorates The Production of COX-2, iNOS, and The Formation of 8-OHdG in Non-Targeted Lung Tissue after Pelvic Irradiation. CELL JOURNAL 2017; 19:324-331. [PMID: 28670525 PMCID: PMC5412791 DOI: 10.22074/cellj.2016.3857] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 08/23/2016] [Indexed: 12/27/2022]
Abstract
In this study, we evaluated the bystander effect of radiation on the regulation of cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), and 8-hydroxydeoxyguanosine
(8-OHdG) in lung tissues of Sprague-Dawley rats with and without pre-administration of
melatonin. A 2×2 cm2 area of the pelvis of male Sprague-Dawley rats with and without
pre-administration of melatonin (100 mg/kg) by oral and intraperitoneal injection was irradiated with a 3 Gy dose of 1.25 MeV γ-rays. Alterations in the levels of COX-2, iNOS,
and 8-OHdG in the out-of-field lung areas of the animals were detected by enzyme immunoassay. The bystander effect significantly increased COX-2, iNOS, and 8-OHdG levels
in non-targeted lung tissues (P<0.05). Melatonin ameliorated the bystander effect of radiation and significantly reduced the level of all examined biomarkers (P<0.05). The results
indicated that the ameliorating effect of a pre-intraperitoneal (IP) injection of melatonin
was noticeably greater compared to oral pre-administration. Our findings revealed that
the bystander effect of radiation could induce oxidative DNA damage and increase the
levels of imperative COX-2 and iNOS in non-targeted lung tissues. Interestingly, melatonin could modulate the indirect destructive effect of radiation and reduce DNA damage
in non-targeted cells.
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Affiliation(s)
- Reza Fardid
- Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ashkan Salajegheh
- Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Amin Mosleh-Shirazi
- Ionizing and Non-ionizing Radiation Protection Research Center, Department of Radiotherapy and Oncology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sedigheh Sharifzadeh
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical sciences, Shiraz, Iran
| | - Mohammad Ali Okhovat
- Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical sciences, Shiraz, Iran
| | - Masoud Najafi
- Department of Biomedical Physics and Engineering, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Abolhasan Rezaeyan
- Department of Medical Physics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Akbar Abaszadeh
- Department of Radiology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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81
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Khan S, Adhikari JS, Rizvi MA, Chaudhury NK. Melatonin attenuates 60 Co γ-ray-induced hematopoietic, immunological and gastrointestinal injuries in C57BL/6 male mice. ENVIRONMENTAL TOXICOLOGY 2017; 32:501-518. [PMID: 26948951 DOI: 10.1002/tox.22254] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2015] [Revised: 02/09/2016] [Accepted: 02/14/2016] [Indexed: 06/05/2023]
Abstract
Protection of hematopoietic, immunological, and gastrointestinal injuries from deleterious effects of ionizing radiation is prime rational for developing radioprotector. The objective of this study, therefore, was to evaluate the radioprotective potential of melatonin against damaging effects of radiation-induced hematopoietic, immunological, and gastrointestinal injuries in mice. C57BL/6 male mice were intraperitoneally administered with melatonin (50-150 mg/kg) 30 min prior to whole-body radiation exposure of 5 and 7.5 Gy using 60 Co-teletherapy unit. Thirty-day survival against 7.5 Gy was monitored. Melatonin (100 mg/kg) pretreatment showed 100% survival against 7.5 Gy radiation dose. Melatonin pretreatment expanded femoral HPSCs, and inhibited spleenocyte DNA strands breaks and apoptosis in irradiated mice. At this time, it also protected radiation-induced loss of T cell sub-populations in spleen. In addition, melatonin pretreatment enhanced crypts regeneration and increased villi number and length in irradiated mice. Translocation of gut bacteria to spleen, liver and kidney were controlled in irradiated mice pretreated with melatonin. Radiation-induced gastrointestinal DNA strand breaks, lipid peroxidation, and expression of proapoptotic-p53, Bax, and antiapoptotic-Bcl-xL proteins were reversed in melatonin pretreated mice. This increase of Bcl-xL was associated with the decrease of Bax/Bcl-xL ratio. ABTS and DPPH radical assays revealed that melatonin treatment alleviated total antioxidant capacity in hematopoietic and gastrointestinal tissues. Present study demonstrated that melatonin pretreatment was able to prevent hematopoietic, immunological, and gastrointestinal radiation-induced injury, therefore, overcoming lethality in mice. These results suggest potential of melatonin in developing radioprotector for protection of bone marrow, spleen, and gastrointestine in planned radiation exposure scenarios including radiotherapy. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 501-518, 2017.
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Affiliation(s)
- Shahanshah Khan
- Division of Radiation Biodosimetry, Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organization, Brig. S. K. Mazumdar Marg, Timarpur, Delhi, 110054, India
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia-a Central University, Moulana Mohammad Ali Jauhar Marg, New Delhi, 110025, India
| | - Jawahar Singh Adhikari
- Division of Radiation Biodosimetry, Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organization, Brig. S. K. Mazumdar Marg, Timarpur, Delhi, 110054, India
| | - Moshahid Alam Rizvi
- Department of Biosciences, Faculty of Natural Sciences, Jamia Millia Islamia-a Central University, Moulana Mohammad Ali Jauhar Marg, New Delhi, 110025, India
| | - Nabo Kumar Chaudhury
- Division of Radiation Biodosimetry, Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organization, Brig. S. K. Mazumdar Marg, Timarpur, Delhi, 110054, India
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82
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Fardid R, Ghorbani Z, Haddadi G, Behzad-Behbahani A, Arabsolghar R, Kazemi E, Okhovat MA, Hosseinimehr SJ. Effects of Hesperidin as a Radio-protector on Apoptosis in Rat Peripheral Blood Lymphocytes after Gamma Radiation. J Biomed Phys Eng 2016; 6:217-228. [PMID: 28144590 PMCID: PMC5219572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 05/29/2016] [Indexed: 06/06/2023]
Abstract
INTRODUCTION Hesperidin (HES), as the most abundant flavonoid existing in the citrus, is widely used by human daily. The radio-protective effects of Hesperidin have been confirmed in various measurement systems. This study aimed to evaluate the effects of Hesperidin on the changes in the apoptosis level and expression of apoptotic genes target (bax, bcl-2 and ration of bax/bcl-2) in the peripheral blood lymphocytes of male rats after gamma radiation. MATERIALS AND METHODS 64 male rats were divided into eight groups: Control, HES (100 mg/kg b.w, orally, 7 days), whole body irradiation with 2 and 8Gy, pre-administrated with 50 and 100 mg/kg body weight of Hesperidin for 7 days before irradiation with 2 and 8 Gy. 24 hours after radiation, apoptotic lymphocytes were evaluated using PE Annexin V Apoptosis detection I kit and the levels of mRNA for bax and bcl-2 were evaluated by real time reverse transcription polymerase chain reaction. RESULTS A significant reduction in apoptosis of the lymphocytes was demonstrated in group animals receiving 8 Gy compared to the group which received 2 Gy irradiation (p<0.0001). However, apoptosis significantly increased in group of rats who received Hesp before irradiation (p<0.05). The increase of apoptosis by Hesperidin administration can be attributed to the decreased expression of bax and significantly reduced expression of bcl-2 and finally increasing the ration of bax/bcl-2. CONCLUSION The results suggest that administration of 50 and 100 mg/kg of Hesperidin induces apoptotic effects by changing expression level of bax, bcl-2 and also the ratio of bax/bcl2.
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Affiliation(s)
- R Fardid
- Assistant Professor of Medical Physics, Radiology Department, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zh Ghorbani
- MSc of Radiobiology & Radiation Protection, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gh Haddadi
- Associate Professor of Medical Physics, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A Behzad-Behbahani
- Professor of Molecular Biology and Medical Virology, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - R Arabsolghar
- Assistant Professor of Biochemistry, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - E Kazemi
- MSc of Radiobiology & Radiation Protection, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - M A Okhovat
- Research assistant, Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S J Hosseinimehr
- Assistant Professor of Pharmacy, Department of Medicinal Chemistry, Sari, Iran
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Dexmedetomidine acts as an oxidative damage prophylactic in rats exposed to ionizing radiation. J Clin Anesth 2016; 34:577-85. [DOI: 10.1016/j.jclinane.2016.06.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 05/16/2016] [Accepted: 06/07/2016] [Indexed: 01/19/2023]
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84
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Phenolic Melatonin-Related Compounds: Their Role as Chemical Protectors against Oxidative Stress. Molecules 2016; 21:molecules21111442. [PMID: 27801875 PMCID: PMC6274579 DOI: 10.3390/molecules21111442] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 10/17/2016] [Accepted: 10/24/2016] [Indexed: 12/22/2022] Open
Abstract
There is currently no doubt about the serious threat that oxidative stress (OS) poses to human health. Therefore, a crucial strategy to maintain a good health status is to identify molecules capable of offering protection against OS through chemical routes. Based on the known efficiency of the phenolic and melatonin (MLT) families of compounds as antioxidants, it is logical to assume that phenolic MLT-related compounds should be (at least) equally efficient. Unfortunately, they have been less investigated than phenols, MLT and its non-phenolic metabolites in this context. The evidence reviewed here strongly suggests that MLT phenolic derivatives can act as both primary and secondary antioxidants, exerting their protection through diverse chemical routes. They all seem to be better free radical scavengers than MLT and Trolox, while some of them also surpass ascorbic acid and resveratrol. However, there are still many aspects that deserve further investigations for this kind of compounds.
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85
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Li W, Wu J, Li Z, Zhou Z, Zheng C, Lin L, Tan B, Huang M, Fan M. Melatonin induces cell apoptosis in Mia PaCa-2 cells via the suppression of nuclear factor-κB and activation of ERK and JNK: A novel therapeutic implication for pancreatic cancer. Oncol Rep 2016; 36:2861-2867. [DOI: 10.3892/or.2016.5100] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 06/30/2016] [Indexed: 11/05/2022] Open
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Flo A, Cambras T, Díez-Noguera A, Calpena A. Melatonin pharmacokinetics after transdermal administration changes according to the time of the day. Eur J Pharm Sci 2016; 96:164-170. [PMID: 27644893 DOI: 10.1016/j.ejps.2016.09.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 09/14/2016] [Accepted: 09/15/2016] [Indexed: 10/21/2022]
Abstract
Melatonin is a neurohormone with multiple and different actions, such as chronobiotic or antioxidant. Melatonin is usually orally administered, but dermal administration is also useful in dermatological diseases or as adjuvant to certain skin treatments. Here, we studied the variability of the pharmacokinetics of melatonin and its metabolite AFMK, when melatonin is transdermally administered to Hairless rat at two different times of day (Zeitgeber Time 4 (ZT4) and ZT16). Moreover, in order to obtain the bioavailability, kinetics after intravenous administration was also studied. In addition, a permeation study was carried out, at both ZTs, to test the amount of melatonin retained in the skin after transdermal administration. Results showed that pharmacokinetic parameters of melatonin administered exogenously depended on the time of the day. When intravenous data were fitted to a compartmental model, the extrapolated plasma concentration at time 0 and the area under the curve were higher at ZT4, while clearance, volumes of central and peripheral compartments and volume of distribution at the steady state were higher at ZT16. Transdermal administration was best fitted to a one-compartment model and tmax, half-life of absorption and area under the curve showed higher values at ZT4, while the absorption rate and constant of absorption were higher at ZT16. AFMK was detected in all cases, but no differences between the two ZTs were observed. Transdermal administration showed better bioavailability also at ZT4. Results indicate that time of day is a variable that should be taken into account when melatonin is transdermally administered.
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Affiliation(s)
- Ana Flo
- Departament de Farmàcia i Tecnologia Farmacèutica, Facultat de Farmàcia i Ciències de la Alimentació, Universitat de Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Trinitat Cambras
- Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de la Alimentació, Universitat de Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain.
| | - Antoni Díez-Noguera
- Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de la Alimentació, Universitat de Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Ana Calpena
- Departament de Farmàcia i Tecnologia Farmacèutica, Facultat de Farmàcia i Ciències de la Alimentació, Universitat de Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
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87
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Köse O, Arabaci T, Kizildag A, Erdemci B, Özkal Eminoğlu D, Gedikli S, Özkanlar S, Zihni M, Albayrak M, Kara A, Kermen E. Melatonin prevents radiation-induced oxidative stress and periodontal tissue breakdown in irradiated rats with experimental periodontitis. J Periodontal Res 2016; 52:438-446. [DOI: 10.1111/jre.12409] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2016] [Indexed: 01/09/2023]
Affiliation(s)
- O. Köse
- Faculty of Dentistry; Department of Periodontology; Recep Tayyip Erdogan University; Rize Turkey
| | - T. Arabaci
- Faculty of Dentistry; Department of Periodontology; Atatürk University; Erzurum Turkey
| | - A. Kizildag
- Faculty of Dentistry; Department of Periodontology; Pamukkale University; Denizli Turkey
| | - B. Erdemci
- Faculty of Medicine; Department of Radiation Oncology; Atatürk University; Erzurum Turkey
| | - D. Özkal Eminoğlu
- Faculty of Dentistry; Department of Periodontology; Atatürk University; Erzurum Turkey
| | - S. Gedikli
- Faculty of Veterinary Medicine; Department of Histology and Embriology; Atatürk University; Erzurum Turkey
| | - S. Özkanlar
- Faculty of Veterinary Medicine; Department of Biochemistry; Atatürk University; Erzurum Turkey
| | - M. Zihni
- Faculty of Dentistry; Department of Periodontology; Recep Tayyip Erdogan University; Rize Turkey
| | - M. Albayrak
- Department of Medical Laboratory; Health Services Vocational Training School; Atatürk University; Erzurum Turkey
| | - A. Kara
- Faculty of Veterinary Medicine; Department of Histology and Embriology; Atatürk University; Erzurum Turkey
| | - E. Kermen
- Faculty of Dentistry; Department of Periodontology; Atatürk University; Erzurum Turkey
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88
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Emerging targets for radioprotection and radiosensitization in radiotherapy. Tumour Biol 2016; 37:11589-11609. [DOI: 10.1007/s13277-016-5117-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 06/09/2016] [Indexed: 01/12/2023] Open
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89
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Tao Y, Geng L, Xu WW, Qin LM, Peng GH, Huang YF. The potential utilizations of hydrogen as a promising therapeutic strategy against ocular diseases. Ther Clin Risk Manag 2016; 12:799-806. [PMID: 27279745 PMCID: PMC4878665 DOI: 10.2147/tcrm.s102518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Hydrogen, one of the most well-known natural molecules, has been used in numerous medical applications owing to its ability to selectively neutralize cytotoxic reactive oxygen species and ameliorate hazardous inflammations. Hydrogen can exert protective effects on various reactive oxygen species-related diseases, including the transplantation-induced intestinal graft injury, chronic inflammation, ischemia–reperfusion injuries, and so on. Especially in the eye, hydrogen has been used to counteract multiple ocular pathologies in the ophthalmological models. Herein, the ophthalmological utilizations of hydrogen are systematically reviewed and the underlying mechanisms of hydrogen-induced beneficial effects are discussed. It is our hope that the protective effects of hydrogen, as evidenced by these pioneering studies, would enrich our pharmacological knowledge about this natural element and cast light into the discovery of a novel therapeutic strategy against ocular diseases.
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Affiliation(s)
- Ye Tao
- Department of Ophthalmology, Chinese People's Liberation Army General Hospital, Ophthalmology & Visual Science Key Lab of PLA, Beijing, People's Republic of China
| | - Lei Geng
- Department of Orthopaedics, Chinese People's Liberation Army General Hospital, Ophthalmology & Visual Science Key Lab of PLA, Beijing, People's Republic of China
| | - Wei-Wei Xu
- Department of Ophthalmology, Chinese People's Liberation Army General Hospital, Ophthalmology & Visual Science Key Lab of PLA, Beijing, People's Republic of China
| | - Li-Min Qin
- Department of Ophthalmology, Chinese People's Liberation Army General Hospital, Ophthalmology & Visual Science Key Lab of PLA, Beijing, People's Republic of China
| | - Guang-Hua Peng
- Department of Ophthalmology, Chinese People's Liberation Army General Hospital, Ophthalmology & Visual Science Key Lab of PLA, Beijing, People's Republic of China
| | - Yi-Fei Huang
- Department of Ophthalmology, Chinese People's Liberation Army General Hospital, Ophthalmology & Visual Science Key Lab of PLA, Beijing, People's Republic of China
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90
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Kavaz E, Perişanoğlu U, Ekinci N, Özdemır Y. Determination of energy absorption and exposure buildup factors by using G-P fitting approximation for radioprotective agents. Int J Radiat Biol 2016; 92:380-7. [PMID: 27124103 DOI: 10.1080/09553002.2016.1175681] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE Recently, there has been an increase in interest into research into radioprotective agents. Radioprotectors are compounds that protect against radiation injury when given orally (through drinking water) prior to radiation exposure. The purpose is to achieve preferred protection of normal tissues against injury inflicted by ionizing radiation used to treat tumors. The main aim of this work is to investigate energy absorption (EABF) and exposure buildup factors (EBF) of commonly used some radioprotective agents. MATERIALS AND METHODS We have used the Geometric Progression (G-P) fitting method for calculating the equivalent atomic number (Zeq), for EABF and EBF buildup factors of the radioprotective agents in the energy range 0.015-15 MeV for penetration depths up to 40 mean free path. RESULTS Significant variations in both EABF and EBF values were observed for several agents at the moderate energy region. At energies below 0.1 MeV, EABF and EBF values increased with decreasing equivalent atomic number Zeq of the samples. At energies >0.15 MeV, EABF and EBF values were found to decrease with decreasing Zeq of all agents. In addition, EABF and EBF were the largest for carnosin, tempol, melatonin, interferon gamma and orientine at 0.05 and 0.06 MeV, respectively, and the minimum values of buildup factors were at 0.1 MeV for cysteine, amifostine, penicillamine and glutathione. CONCLUSIONS Cysteine and amifostine are good compounds for gamma rays absorption applications among the selected compounds. The presented results in this study are expected to be helpful in radiation dosimetry.
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Affiliation(s)
- Esra Kavaz
- a Department of Physics, Faculty of Sciences , Ataturk University , Erzurum
| | - Ufuk Perişanoğlu
- a Department of Physics, Faculty of Sciences , Ataturk University , Erzurum ;,b Department of Materials Science and Engineering, Faculty of Engineering , Hakkari University , Hakkari , Turkey
| | - Neslihan Ekinci
- a Department of Physics, Faculty of Sciences , Ataturk University , Erzurum
| | - Yüksel Özdemır
- a Department of Physics, Faculty of Sciences , Ataturk University , Erzurum
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91
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Rao MV, Narechania MB. The genotoxic effects of anti-cancer drug gossypol on human lymphocytes and its mitigation by melatonin. Drug Chem Toxicol 2016; 39:357-61. [PMID: 27071859 DOI: 10.3109/01480545.2015.1039646] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE OF STUDY To determine melatonin as a potential natural antioxidant to mitigate the genotoxic effects of promising anti-cancer drug gossypol in human lymphocytes. INTRODUCTION Gossypol, is a polyphenolic compound naturally occurring in cotton seed, was originally identified as a male contraceptive but it has several proposed clinical applications. Gossypol has anti-proliferative effects on cancer cell lines. However, its genotoxic effects on normal cells are not much studied. Hence, there is a paucity of data available. Hence, the study was conducted to investigate gossypol-induced genotoxic effects on lymphocytes. METHODS Peripheral blood lymphocyte cultures (PBLC) were done and exposed by two different doses of an anti-cancer drug, gossypol (0.274 mM, 1.645 mM) to check genotoxic effects. Melatonin (0.2 mM) is used as an antioxidant. Genotoxic indices such as sister chromatid exchanges (SCEs), cell cycle proliferative index (CCPI), average generation time (AGT), population doubling time (PDT) were assayed in the cultures. RESULT Gossypol-treated groups indicated significant increases in frequency of SCEs calculated for SCE/plate and SCE/chromosome. Furthermore, CCPI showed a remarkable reduction and increased AGT and PDT levels were found in exposed cultures. When the higher dose of gossypol cultures was treated along with melatonin, these indices were found to be declined and comparable to control. CONCLUSION Gossypol, an anti-cancer drug, induces genotoxicity on lymphocyte cells and co-supplementation of melatonin antioxidant ameliorates these toxic effects of gossypol.
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Affiliation(s)
- Mandava Venkatesh Rao
- a Human Genetics Division, Department of Zoology , BMTC and HG, School of Sciences, Gujarat University , Ahmedabad , Gujarat , India
| | - Moksha B Narechania
- a Human Genetics Division, Department of Zoology , BMTC and HG, School of Sciences, Gujarat University , Ahmedabad , Gujarat , India
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92
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Rostami A, Moosavi SA, Dianat Moghadam H, Bolookat ER. Micronuclei Assessment of The Radioprotective Effects of Melatonin and Vitamin C in Human Lymphocytes. CELL JOURNAL 2016; 18:46-51. [PMID: 27054118 PMCID: PMC4819385 DOI: 10.22074/cellj.2016.3986] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 05/24/2015] [Indexed: 12/12/2022]
Abstract
Objective Critical macromolecules such as DNA maybe damaged by free radicals that
are generated from the interaction of ionizing radiation with biological systems. Melatonin
and vitamin C have been shown to be direct free radical scavengers. The aim of this study
was to investigate the in vivo/in vitro radioprotective effects of melatonin and vitamin C
separately and combined against genotoxicity induced by 6 MV x-ray irradiation in human
cultured blood lymphocytes.
Materials and Methods In this experimental study, fifteen volunteers were divided into
three groups of melatonin, vitamin C and melatonin plus vitamin C treatment. Peripheral
blood samples were collected from each group before, and 1, 2 and 3 hours after melatonin and vitamin C administration (separately and combined). The blood samples were
then irradiated with 200 cGy of 6 MV x-ray. In order to characterize chromosomal aberrations, the lymphocyte samples were cultured with mitogenic stimulus on cytokinesisblocked binucleated cells.
Results The samples collected 1hour after melatonin and vitamin C (separately and
combined) ingestion exhibited a significant decrease in the incidence of micronuclei compared with their control group (P<0.05). The maximum synergic protection and reduction
in frequency of micronuclei (57%) was observed 1 hour after vitamin C and melatonin
administration combined.
Conclusion We conclude that simultaneous administration of melatonin and vitamin C
as radioprotector substances before irradiation may reduce genotoxicity caused by x-ray
irradiation.
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Affiliation(s)
- Aram Rostami
- Department of Medical Physics, School of Medicine-International Campus, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Akbar Moosavi
- Department of Lab Sciences, School of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hassan Dianat Moghadam
- Department of Medical Biotechnology, School of Advanced Technology, Tehran University of Medical Sciences, Tehran, Iran
| | - Eftekhar Rajab Bolookat
- Department of Radiotherapy, Hospital of Shohada Tajrish, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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93
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Pirayesh Islamian J, Farajollahi A, Mehrali H, Hatamian M. Radioprotective Effects of Amifostine and Lycopene on Human Peripheral Blood Lymphocytes In Vitro. J Med Imaging Radiat Sci 2016; 47:49-54. [PMID: 31047163 DOI: 10.1016/j.jmir.2015.10.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/14/2015] [Accepted: 10/14/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Radiation protection is a pivotal challenge for radiation workers employed in medical fields, industry, and also space professionals with an increasing role in medical diagnostic and therapeutic applications. Radioprotective effects of amifostine and lycopene and their ability to moderate the level of radiation-induced chromosomal aberrations were investigated using the dicentric chromosome assay. METHODS Parallel human whole blood samples, pretreated with amifostine (250 μg/mL), lycopene (5 μg/mL), and/or their combinations were irradiated for 30 minutes with 60Co γ rays (1, 2, 3, and 4 Gy) with a dose rate of 98.46 cGy/min at SAD = 100 cm, in vitro and cocultured with control groups. The frequencies of chromosomal aberrations in the lymphocyte of the cells were analyzed. RESULTS There were no apparent chromosome aberrations in controls and also in the drug-treated groups in the absence of radiation. Radiodrug treatment significantly decreased frequency of the radiation-induced chromosome aberrations compared with radiation alone (P < .05). Amifostine reduced the frequency of radiation-induced dicentrics by 15.8%, 21.9%, 4.5%, and 11.6%, with dose protection factors (DPFs) of 1.2 ± 0.02, 1.3 ± 0.1, 1.05 ± 0.03, and 1.13 ± 0.02. Lycopene reduced the frequency by 17.2%, 3.07%, 1.63%, and 16.6%, with DPFs of 1.21 ± 0.12, 1.03±0.05, 1.02±0.03 and 1.12±0.03. The combination treatment reduced the frequency by 28%, 24.9%, 9%, and 31.2%, with DPFs of 1.38 ± 0.06, 1.33 ± 0.06, 1.09 ± 0.02, and 1.45 ± 0.03 with radiation doses of 1, 2, 3, and 4 Gy, respectively. CONCLUSIONS It can be suggested that pretreatment with combined amifostine and lycopene may reduce the extent of ionizing radiation damage in cells.
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Affiliation(s)
- Jalil Pirayesh Islamian
- Department of Medical Physics, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Alireza Farajollahi
- Department of Medical Physics, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Habib Mehrali
- Department of Medical Physics, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Milad Hatamian
- Department of Medical Physics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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94
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Galano A, Mazzone G, Alvarez-Diduk R, Marino T, Alvarez-Idaboy JR, Russo N. Food Antioxidants: Chemical Insights at the Molecular Level. Annu Rev Food Sci Technol 2016; 7:335-52. [DOI: 10.1146/annurev-food-041715-033206] [Citation(s) in RCA: 227] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, C. P. 09340, Ciudad de México, D. F., México
| | - Gloria Mazzone
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87036 Arcavacata di Rende, Italy;
| | - Ruslán Alvarez-Diduk
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, C. P. 09340, Ciudad de México, D. F., México
| | - Tiziana Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87036 Arcavacata di Rende, Italy;
| | - J. Raúl Alvarez-Idaboy
- Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, 04510 Ciudad de México, D. F., Mexico
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87036 Arcavacata di Rende, Italy;
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Assessment of Radiation Induced Therapeutic Effect and Cytotoxicity in Cancer Patients Based on Transcriptomic Profiling. Int J Mol Sci 2016; 17:250. [PMID: 26907258 PMCID: PMC4783980 DOI: 10.3390/ijms17020250] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 01/31/2016] [Accepted: 02/03/2016] [Indexed: 12/11/2022] Open
Abstract
Toxicity induced by radiation therapy is a curse for cancer patients undergoing treatment. It is imperative to understand and define an ideal condition where the positive effects notably outweigh the negative. We used a microarray meta-analysis approach to measure global gene-expression before and after radiation exposure. Bioinformatic tools were used for pathways, network, gene ontology and toxicity related studies. We found 429 differentially expressed genes at fold change >2 and p-value <0.05. The most significantly upregulated genes were synuclein alpha (SNCA), carbonic anhydrase I (CA1), X-linked Kx blood group (XK), glycophorin A and B (GYPA and GYPB), and hemogen (HEMGN), while downregulated ones were membrane-spanning 4-domains, subfamily A member 1 (MS4A1), immunoglobulin heavy constant mu (IGHM), chemokine (C-C motif) receptor 7 (CCR7), BTB and CNC homology 1 transcription factor 2 (BACH2), and B-cell CLL/lymphoma 11B (BCL11B). Pathway analysis revealed calcium-induced T lymphocyte apoptosis and the role of nuclear factor of activated T-cells (NFAT) in regulation of the immune response as the most inhibited pathways, while apoptosis signaling was significantly activated. Most of the normal biofunctions were significantly decreased while cell death and survival process were activated. Gene ontology enrichment analysis revealed the immune system process as the most overrepresented group under the biological process category. Toxicity function analysis identified liver, kidney and heart to be the most affected organs during and after radiation therapy. The identified biomarkers and alterations in molecular pathways induced by radiation therapy should be further investigated to reduce the cytotoxicity and development of fatigue.
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96
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Cakmak Karaer I, Simsek G, Yildiz A, Vardi N, Polat A, Tanbek K, Gurocak S, Parlakpinar H. Melatonin's protective effect on the salivary gland against ionized radiation damage in rats. J Oral Pathol Med 2016; 45:444-9. [PMID: 26757153 DOI: 10.1111/jop.12386] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/23/2015] [Indexed: 12/12/2022]
Abstract
OBJECTIVES The aim of this study was to examine the effects of melatonin on ionized radiation-induced salivary gland damage using an experimental model. MATERIALS AND METHODS Thirty-two rats were randomized into four groups: (i) the control group (C, n = 8) that received intraperitoneal (i.p.) 0.9% NaCl; (ii) the melatonin group (M, n = 8) that received i.p. 5 mg/kg melatonin; (iii) the radiotherapy group (RT, n = 8) that underwent irradiation; (iv) the melatonin plus radiotherapy group (M+RT, n = 8) that received i.p. 5 mg/kg of melatonin, followed by irradiation 30 min later; and (v) the radiotherapy plus melatonin group (RT+M, n = 8) that received irradiation followed by i.p. 5 mg/kg of melatonin 30 min later. The medications and irradiation were administered for 5 days and the salivary glands of the rats were excised 10 days later; the histopathological changes in the salivary glands were assessed and biochemical analyses were conducted (tissue levels of malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), reduced glutathione (GSH), total antioxidant status (TAS), total oxidant status (TOS), and oxidative stress index (OSI)). RESULTS Regardless of whether melatonin was administered before or after radiotherapy, melatonin decreased the radiation-induced parotid and submandibular histological damage. In addition, regardless of whether administration occurred before or after radiotherapy, melatonin decreased oxidative stress markers, such as MDA, TOS, and OSI. On the contrary, levels of antioxidative markers, such as CAT and GPx, were increased by melatonin. CONCLUSIONS Melatonin may have a significant protective effect on salivary gland damage secondary to ionizing radiation.
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Affiliation(s)
| | - Gokce Simsek
- Department of ENT, School of Medicine, Kirikkale University, Kirikkale, Turkey
| | - Azibe Yildiz
- Department of Histology and Embryology, School of Medicine, Inonu University, Malatya, Turkey
| | - Nigar Vardi
- Department of Histology and Embryology, School of Medicine, Inonu University, Malatya, Turkey
| | - Alaadin Polat
- Department of Physiology, School of Medicine, Inonu University, Malatya, Turkey
| | - Kevser Tanbek
- Department of Physiology, School of Medicine, Inonu University, Malatya, Turkey
| | - Simay Gurocak
- Department of Radiation Oncology, School of Medicine, Inonu University, Malatya, Turkey
| | - Hakan Parlakpinar
- Department of Pharmacology, School of Medicine, Inonu University, Malatya, Turkey
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97
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Nicolson GL, de Mattos GF, Settineri R, Costa C, Ellithorpe R, Rosenblatt S, La Valle J, Jimenez A, Ohta S. Clinical Effects of Hydrogen Administration: From Animal and Human Diseases to Exercise Medicine. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/ijcm.2016.71005] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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98
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Villuendas-Rey Y, Alvarez-Idaboy JR, Galano A. Assessing the Protective Activity of a Recently Discovered Phenolic Compound against Oxidative Stress Using Computational Chemistry. J Chem Inf Model 2015; 55:2552-61. [PMID: 26624520 DOI: 10.1021/acs.jcim.5b00513] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The protection exerted by 3,5-dihydroxy-4-methoxybenzyl alcohol (DHMBA), a phenolic compound recently isolated from the Pacific oyster, against oxidative stress (OS) is investigated using the density functional theory. Our results indicate that DHMBA is an outstanding peroxyl radical scavenger, being about 15 times and 4 orders of magnitude better than Trolox for that purpose in lipid and aqueous media, respectively. It was also found to react faster with HOO(•) than other known antioxidants such as resveratrol and ascorbic acid. DHMBA is also predicted to be able to sequester Cu(II) ions, consequently inhibiting the OS induced by Cu(II)-ascorbate mixtures and downgrading the (•)OH production via the Haber-Weiss reaction. However, it is proposed that DHMBA is more efficient as a primary antioxidant (free radical scavenger), than as a secondary antioxidant (metal ion chelator). In addition, it was found that DHMBA can be efficiently regenerated in aqueous solution, at physiological pH. Such regeneration is expected to contribute to increase the antioxidant protection exerted by DHMBA. These results suggest that probably synthetic routes for this compound should be pursued, because albeit its abundance in nature is rather low, its antioxidant activity is exceptional.
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Affiliation(s)
- Yenny Villuendas-Rey
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C. P., 09340 México D. F., México
| | - Juan Raul Alvarez-Idaboy
- Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México , México D. F. 04510, México
| | - Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C. P., 09340 México D. F., México
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99
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Canyilmaz E, Uslu GH, Bahat Z, Kandaz M, Mungan S, Haciislamoglu E, Mentese A, Yoney A. Comparison of the effects of melatonin and genistein on radiation-induced nephrotoxicity: Results of an experimental study. Biomed Rep 2015; 4:45-50. [PMID: 26870332 DOI: 10.3892/br.2015.547] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/07/2015] [Indexed: 12/18/2022] Open
Abstract
The aim of the present study was to compare the effects of melatonin and genistein on radiation-induced nephrotoxicity (RIN). A total of 70 Swiss Albino mice were divided into 7 groups. Five control groups were defined, which were sham irradiation (C, G1), radiation therapy only (RT, G2), melatonin (M, G3), genistein (G, G4) and polyethylene glycol-400 (G5), respectively. The co-treatment groups were the RT plus melatonin (RT+M, G6) and RT plus genistein (RT+G, G7) groups. Irradiation was applied using a cobalt-60 teletherapy machine (80-cm fixed source-to-surface distance, 2.5-cm depth). Melatonin was administered (100 mg/kg, intraperitoneal injection) 30 min before the single dose of irradiation, whereas genistein was administered (200 mg/kg, subcutaneous injection) 1 day before the single dose of irradiation. All the mice were sacrificed 6 months after irradiation. As an end point, the extent of renal tubular atrophy for each mouse was quantified with image analysis of histological sections of the kidney. Tissue malondialdehyde (MDA) levels were also measured in each animal. In the histopathological examination of the mouse kidneys, there was a statistically significant reduction (P<0.05) in the presence of tubular atrophy between the RT+M and RT+G groups and the RT group. There was a statistically significant increase in MDA levels in the irradiated versus sham groups (RT vs. C; P<0.05); however, MDA levels were significantly decreased by co-treatment with melatonin or genistein vs. RT alone (RT+M and RT+G vs. RT; P<0.05). In conclusion, the present experimental study showed that melatonin and genistein supplementation prior to irradiation-protected mice against RIN, which may have therapeutic implications for radiation-induced injuries.
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Affiliation(s)
- Emine Canyilmaz
- Department of Radiation Oncology, Faculty of Medicine, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Gonca Hanedan Uslu
- Department of Radiation Oncology, Faculty of Medicine, Kanuni Research and Education Hospital, 60080 Trabzon, Turkey
| | - Zumrut Bahat
- Department of Radiation Oncology, Faculty of Medicine, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Mustafa Kandaz
- Department of Radiation Oncology, Faculty of Medicine, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Sevdegul Mungan
- Department of Medical Pathology, Faculty of Medicine, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Emel Haciislamoglu
- Department of Radiation Oncology, Faculty of Medicine, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Ahmet Mentese
- Department of Medical Biochemistry, Faculty of Medicine, Karadeniz Technical University, 61080 Trabzon, Turkey
| | - Adnan Yoney
- Department of Radiation Oncology, Faculty of Medicine, Karadeniz Technical University, 61080 Trabzon, Turkey
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Ganie SA, Dar TA, Bhat AH, Dar KB, Anees S, Zargar MA, Masood A. Melatonin: A Potential Anti-Oxidant Therapeutic Agent for Mitochondrial Dysfunctions and Related Disorders. Rejuvenation Res 2015; 19:21-40. [PMID: 26087000 DOI: 10.1089/rej.2015.1704] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Mitochondria play a central role in cellular physiology. Besides their classic function of energy metabolism, mitochondria are involved in multiple cell functions, including energy distribution through the cell, energy/heat modulation, regulation of reactive oxygen species (ROS), calcium homeostasis, and control of apoptosis. Simultaneously, mitochondria are the main producer and target of ROS with the result that multiple mitochondrial diseases are related to ROS-induced mitochondrial injuries. Increased free radical generation, enhanced mitochondrial inducible nitric oxide synthase (iNOS) activity, enhanced nitric oxide (NO) production, decreased respiratory complex activity, impaired electron transport system, and opening of mitochondrial permeability transition pores have all been suggested as factors responsible for impaired mitochondrial function. Because of these, neurodegenerative diseases, such as Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), Huntington's disease (HD), and aging, are caused by ROS-induced mitochondrial dysfunctions. Melatonin, the major hormone of the pineal gland, also acts as an anti-oxidant and as a regulator of mitochondrial bioenergetic function. Melatonin is selectively taken up by mitochondrial membranes, a function not shared by other anti-oxidants, and thus has emerged as a major potential therapeutic tool for treating neurodegenerative disorders. Multiple in vitro and in vivo experiments have shown the protective role of melatonin for preventing oxidative stress-induced mitochondrial dysfunction seen in experimental models of PD, AD, and HD. With these functions in mind, this article reviews the protective role of melatonin with mechanistic insights against mitochondrial diseases and suggests new avenues for safe and effective treatment modalities against these devastating neurodegenerative diseases. Future insights are also discussed.
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Affiliation(s)
- Showkat Ahmad Ganie
- 1 Department of Clinical Biochemistry, University of Kashmir Srinagar , India
| | - Tanveer Ali Dar
- 1 Department of Clinical Biochemistry, University of Kashmir Srinagar , India
| | - Aashiq Hussain Bhat
- 1 Department of Clinical Biochemistry, University of Kashmir Srinagar , India
| | - Khalid B Dar
- 1 Department of Clinical Biochemistry, University of Kashmir Srinagar , India
| | - Suhail Anees
- 1 Department of Clinical Biochemistry, University of Kashmir Srinagar , India
| | | | - Akbar Masood
- 2 Department of Biochemistry, University of Kashmir Srinagar , India
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