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Jing X, Chen Z, Zhang M, Luo C, Yang B, Lv Y, Li Y, Zeng L, Lin W. Melatonin mitigates the lipopolysaccharide-induced myocardial injury in rats by blocking the p53/xCT pathway-mediated ferroptosis. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03367-2. [PMID: 39153053 DOI: 10.1007/s00210-024-03367-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 08/08/2024] [Indexed: 08/19/2024]
Abstract
This article examined the therapeutic effect of melatonin (MT) on the lipopolysaccharide (LPS)-induced myocardial injury, and the mechanisms involved. Septic rat model was constructed by exposing to lipopolysaccharide (LPS), and treated by MT, Ferrostatin-1 (Fer-1) and Erastin (Era). Hematoxylin-eosin staining was executed to appraise myocardial injury. H9c2 cells that exposed to LPS to induce in vitro sepsis cell model were treated by MT. p53 overexpression vectors were transfected into H9c2 cells. Inflammation- and ferroptosis-related indicators were examined by enzyme-linked immunosorbent assay. Expression of p53, xCT and GPX4 was scrutinized by quantitative real-time polymerase chain reaction and Western blot. MT relieved myocardial injury in septic rats. It decreased IL-6 and TNF-α, elevated GPX4 and GSH, and reduced MDA and Fe2+ in myocardial tissues of septic rats. LPS induced p53 elevation and xCT reduction in rats' myocardial tissues. Nevertheless, MT treatment declined p53 and increased xCT in myocardial tissues of septic rats. Interestingly, the relieving effect of MT on myocardial injury in septic rats was enhanced by Fer-1, but reversed by Era. The LPS-induced H9c2 cell damage was relieved by MT treatment. Besides, MT decreased LDH, IL-6 and TNF-α, elevated xCT, GPX4 and GSH, and reduced MDA and Fe2+ in the LPS-induced H9c2 cells. Conversely, these influences of MT on the LPS-induced H9c2 cells were reversed by p53 overexpression. MT is proposed to be a promising agent for treating the LPS-induced myocardial injury, as it relieves myocardial injury by hindering the p53/xCT-mediated ferroptosis in the LPS-induced septic rats.
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Affiliation(s)
- Xin Jing
- Department of Intensive Care Medicine, Cardio-Cerebrovascular Hospital, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Zhida Chen
- Department of Intensive Care Medicine, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, China
| | - Mingdao Zhang
- Department of Intensive Care Medicine, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, China
| | - Caiqin Luo
- Department of Intensive Care Medicine, Cardio-Cerebrovascular Hospital, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Bo Yang
- Department of Intensive Care Medicine, Cardio-Cerebrovascular Hospital, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Yanlan Lv
- Department of Intensive Care Medicine, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, China
| | - Yue Li
- Department of Intensive Care Medicine, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, China
| | - Lina Zeng
- Department of Intensive Care Medicine, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, China
| | - Wenji Lin
- Emergency Department, Shenzhen Qianhai Shekou Free Trade Zone Hospital, Shenzhen, China.
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Ates G, Tamer S, Ozkok E, Yorulmaz H, Gundogan GI, Aksu A, Balkis N. Utility of melatonin on brain injury, synaptic transmission, and energy metabolism in rats with sepsis. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03337-8. [PMID: 39105798 DOI: 10.1007/s00210-024-03337-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Accepted: 07/25/2024] [Indexed: 08/07/2024]
Abstract
Melatonin is a powerful endogenous antioxidant hormone. Its healing effects on energy balance and neuronal damage associated with oxidative metabolism disorders have been reported in pathologic conditions. We aimed to determinate the utility of melatonin on neuronal damage, synaptic transmission, and energy balance in the brain tissue of rats with sepsis induced with LPS. Rats was divided into four groups such as control, LPS (20 mg/kg i.p.), melatonin (10 mg/kg i.p. × 3), and LPS + Melatonin (LPS + Mel). After 6 h from the first injection, rats were decapitated, and also tissue and serum samples were taken. Lipid peroxidation and neuron-specific enolase (NSE) levels were determined from the serum in all group. High energy compounds, creatine, and creatine phosphate are measured by HPLC methods from the homogenized tissue. Counts of living neurons are marked with NeuN (neuronal nuclei), degenerated neurons are marked with S100-ß and synaptic vesicles transmission is analyzed with synaptophysin antibodies immunoreactivities. One-way ANOVA and post hoc Tukey tests were used to statistical analysis. In LPS group, AMP, ATP, creatine, and creatine phosphate levels were significantly decreased (p < 0.05), and also ADP levels were significantly increased compared with the other groups (p < 0.01). Living neurons counts were significantly decreased in LPS (p < 0.01), melatonin, and LPS + Melatonin (p < 0.05) groups compared with control. Degenerated neurons counts were increased in LPS group compared with control (p < 0.01) and also decreased in both of melatonin and LPS + Melatonin groups (p < 0.01). Synaptophysin immunoreactivity was decreased in LPS group compared with the other groups (p < 0.05). We observed that melatonin administration prevents neuronal damage, regulates energy metabolism, and protects synaptic vesicle proteins from sepsis-induced reduction.
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Affiliation(s)
- Gulten Ates
- Department of Physiology, Faculty of Medicine, Istanbul Yeni Yuzyil University, Yilanlı Ayazma St, Cevizlibag, Istanbul, 34010, Turkey.
| | - Sule Tamer
- Department of Physiology, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Elif Ozkok
- Department of Neuroscience, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Hatice Yorulmaz
- Faculty of Health Science, Halic University, Istanbul, Turkey
| | - Gul Ipek Gundogan
- Department of Histology and Embryology, Faculty of Medicine, Biruni University, Istanbul, Turkey
| | - Abdullah Aksu
- Department of Chemical Oceanography, Institute of Marine Sciences and Management, Istanbul University, Istanbul, Turkey
| | - Nuray Balkis
- Department of Chemical Oceanography, Institute of Marine Sciences and Management, Istanbul University, Istanbul, Turkey
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Chatterjee A, Roy T, Jyothi D, Mishra VK, Singh UP, Swarnakar S. Melatonin Inhibits AGS Cell Proliferation by Binding to the ATP Binding Site of CDK2 Under Hyperglycemic Conditions. Cell Biochem Biophys 2024; 82:895-908. [PMID: 38453745 DOI: 10.1007/s12013-024-01241-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 02/21/2024] [Indexed: 03/09/2024]
Abstract
Cancer cells utilize glucose as their primary energy source. The aggressive nature of cancer cells is therefore enhanced in hyperglycemic conditions. This study has been adopted to investigate the therapeutic potential of melatonin against such aggressive proliferation of AGS cells-a human gastric cancer cell line, under hyperglycemic conditions. AGS cells were incubated with high glucose-containing media, and the effects of melatonin have been evaluated, therein. Cell proliferation, ROS generation, flow-cytometric analysis for cell cycle and apoptosis, wound healing, immunoblotting, zymography, reverse zymography assays, in-silico analysis, and kinase activity assays were performed to evaluate the effects of melatonin. We observed that melatonin inhibited the hyperglycemia-induced cell proliferation in a dose-dependent manner. It further altered the expression and activity of MMP-9 and TIMP-1. Moreover, melatonin inhibited AGS cell proliferation by arresting AGS cells in the G0/G1 phase after binding in the ATP binding site of CDK-2, thereby inhibiting its kinase activity. In association, a significant decrease in the expression of cyclin D1, cyclin E, CDK-4, and CDK-2 were observed. In conclusion, these findings suggest that melatonin has anti-gastric cancer potential. Melatonin could therefore be included in future drug designs for gastric cancer-hyperglycemia co-morbidity treatment.
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Affiliation(s)
- Abhishek Chatterjee
- Infectious Diseases and Immunology division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India
| | - Tapasi Roy
- Infectious Diseases and Immunology division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India
| | - Deeti Jyothi
- Infectious Diseases and Immunology division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India
| | - Vineet Kumar Mishra
- Infectious Diseases and Immunology division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India
| | - Umesh Prasad Singh
- Infectious Diseases and Immunology division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India
| | - Snehasikta Swarnakar
- Infectious Diseases and Immunology division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Kolkata, 700032, West Bengal, India.
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Minchev D, Kazakova M, Sarafian V. Neuroinflammation and Autophagy in Parkinson's Disease-Novel Perspectives. Int J Mol Sci 2022; 23:ijms232314997. [PMID: 36499325 PMCID: PMC9735607 DOI: 10.3390/ijms232314997] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/22/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022] Open
Abstract
Parkinson's disease (PD) is the second most prevalent neurodegenerative disorder. It is characterized by the accumulation of α-Synuclein aggregates and the degeneration of dopaminergic neurons in substantia nigra in the midbrain. Although the exact mechanisms of neuronal degeneration in PD remain largely elusive, various pathogenic factors, such as α-Synuclein cytotoxicity, mitochondrial dysfunction, oxidative stress, and pro-inflammatory factors, may significantly impair normal neuronal function and promote apoptosis. In this context, neuroinflammation and autophagy have emerged as crucial processes in PD that contribute to neuronal loss and disease development. They are regulated in a complex interconnected manner involving most of the known PD-associated genes. This review summarizes evidence of the implication of neuroinflammation and autophagy in PD and delineates the role of inflammatory factors and autophagy-related proteins in this complex condition. It also illustrates the particular significance of plasma and serum immune markers in PD and their potential to provide a personalized approach to diagnosis and treatment.
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Affiliation(s)
- Danail Minchev
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute at Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Correspondence:
| | - Maria Kazakova
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute at Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
| | - Victoria Sarafian
- Department of Medical Biology, Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
- Research Institute at Medical University-Plovdiv, 4000 Plovdiv, Bulgaria
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