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Li N, Deng J, Zhang J, Yu F, Ye F, Hao L, Li S, Hu X. A New Strategy for Targeting UCP2 to Modulate Glycolytic Reprogramming as a Treatment for Sepsis A New Strategy for Targeting UCP2. Inflammation 2024:10.1007/s10753-024-01998-4. [PMID: 38429403 DOI: 10.1007/s10753-024-01998-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 02/09/2024] [Accepted: 02/20/2024] [Indexed: 03/03/2024]
Abstract
Sepsis is a severe and life-threatening disease caused by infection, characterized by a dysregulated immune response. Unfortunately, effective treatment strategies for sepsis are still lacking. The intricate interplay between metabolism and the immune system limits the treatment options for sepsis. During sepsis, there is a profound shift in cellular energy metabolism, which triggers a metabolic reprogramming of immune cells. This metabolic alteration impairs immune responses, giving rise to excessive inflammation and immune suppression. Recent research has demonstrated that UCP2 not only serves as a critical target in sepsis but also functions as a key metabolic switch involved in immune cell-mediated inflammatory responses. However, the regulatory mechanisms underlying this modulation are complex. This article focuses on UCP2 as a target and discusses metabolic reprogramming during sepsis and the complex regulatory mechanisms between different stages of inflammation. Our research indicates that overexpression of UCP2 reduces the Warburg effect, restores mitochondrial function, and improves the prognosis of sepsis. This discovery aims to provide a promising approach to address the significant challenges associated with metabolic dysfunction and immune paralysis.
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Affiliation(s)
- Na Li
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiali Deng
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Junli Zhang
- Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Fei Yu
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fanghang Ye
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Liyuan Hao
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shenghao Li
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyu Hu
- Department of Infectious Diseases, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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2
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Di W, Jin Z, Lei W, Liu Q, Yang W, Zhang S, Lu C, Xu X, Yang Y, Zhao H. Protection of melatonin treatment and combination with traditional antibiotics against septic myocardial injury. Cell Mol Biol Lett 2023; 28:35. [PMID: 37101253 PMCID: PMC10134561 DOI: 10.1186/s11658-022-00415-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 12/23/2022] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND Heart failure is a common complication of sepsis with a high mortality rate. It has been reported that melatonin can attenuate septic injury due to various properties. On the basis of previous reports, this study will further explore the effects and mechanisms of melatonin pretreatment, posttreatment, and combination with antibiotics in the treatment of sepsis and septic myocardial injury. METHODS AND RESULTS Our results showed that melatonin pretreatment showed an obvious protective effect on sepsis and septic myocardial injury, which was related to the attenuation of inflammation and oxidative stress, the improvement of mitochondrial function, the regulation of endoplasmic reticulum stress (ERS), and the activation of the AMPK signaling pathway. In particular, AMPK serves as a key effector for melatonin-initiated myocardial benefits. In addition, melatonin posttreatment also had a certain degree of protection, while its effect was not as remarkable as that of pretreatment. The combination of melatonin and classical antibiotics had a slight but limited effect. RNA-seq detection clarified the cardioprotective mechanism of melatonin. CONCLUSION Altogether, this study provides a theoretical basis for the application strategy and combination of melatonin in septic myocardial injury.
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Affiliation(s)
- Wencheng Di
- Department of Cardiovascular Medicine, National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, 29 Bulan Road, Shenzhen, Guangdong Province, China
| | - Zhenxiao Jin
- Department of Cardiovascular Surgery, Xijing Hospital, The Airforce Military Medical University, 127 Changle West Road, Xi'an, China
| | - Wangrui Lei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, 229 Taibai North Road, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, China
| | - Qiong Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, 229 Taibai North Road, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, China
| | - Wenwen Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, 229 Taibai North Road, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, China
| | - Shaofei Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, 229 Taibai North Road, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, China
| | - Chenxi Lu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, 229 Taibai North Road, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, China
| | - Xiaoling Xu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, 229 Taibai North Road, Xi'an, China
- Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, China
| | - Yang Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, 229 Taibai North Road, Xi'an, China.
- Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, China.
| | - Huadong Zhao
- Department of General Surgery, Tangdu Hospital, The Airforce Military Medical University, 1 Xinsi Road, Xi'an, China.
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3
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Zhao P, Li X, Yang Q, Lu Y, Wang G, Yang H, Dong J, Zhang H. Malvidin alleviates mitochondrial dysfunction and ROS accumulation through activating AMPK-α/UCP2 axis, thereby resisting inflammation and apoptosis in SAE mice. Front Pharmacol 2023; 13:1038802. [PMID: 36699054 PMCID: PMC9868257 DOI: 10.3389/fphar.2022.1038802] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023] Open
Abstract
This study aimed to explore the protective roles of malvidin in life-threatened sepsis-associated encephalopathy (SAE) and illustrate the underlying mechanism. SAE mice models were developed and treated with malvidin for subsequently protective effects evaluation. Malvidin restored neurobehavioral retardation, declined serum S100β and NSE levels, sustained cerebrum morphological structure, improved blood-brain barrier integrity with elevated tight junction proteins, and decreased evans blue leakage, and finally protect SAE mice from brain injury. Mechanistically, malvidin prevented cerebrum from mitochondrial dysfunction with enhanced JC-1 aggregates and ATP levels, and ROS accumulation with decreased lipid peroxidation and increased antioxidant enzymes. UCP2 protein levels were found to be decreased after LPS stimulation in the cerebrum and BV-2 cells, and malvidin recovered its levels in a ROS dependent manner. In vivo inhibition of UCP2 with genipin or in vitro interference with siRNA UCP2 both disrupted the mitochondrial membrane potential, decreased ATP levels and intensified DCF signals, being a key target for malvidin. Moreover, dorsomorphin block assays verified that malvidin upregulated UCP2 expression through phosphorylating AMPK in SAE models. Also, malvidin alleviated SAE progression through inhibition of ROS-dependent NLRP3 inflammasome activation mediated serum pro-inflammatory cytokines secretion and mitochondrial pathway mediated apoptosis with weakened apoptosis body formation and tunel positive signals, and decreased Bax, cytochrome C, caspase-3 and increased Bcl-2 protein levels. Overall, this study illustrated that malvidin targeted AMPK-α/UCP2 axis to restore LPS-induced mitochondrial dysfunction and alleviate ROS accumulation, which further inhibits NLRP3 inflammasome activation and mitochondrial apoptosis in a ROS dependent way, and ultimately protected SAE mice, providing a reference for the targeted development of SAE prophylactic approach.
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Affiliation(s)
- Panpan Zhao
- Institute of Neuroscience, Department of Vascular Surgery, The First People’s Hospital of Lianyungang, Lianyungang, China
| | - Xiaomin Li
- Department of Oncology, The Second People’s Hospital of Lianyungang City, Lianyungang, China
| | - Qiankun Yang
- Institute of Neuroscience, Department of Vascular Surgery, The First People’s Hospital of Lianyungang, Lianyungang, China,Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, China
| | - Yingzhi Lu
- Department of Oncology, The Second People’s Hospital of Lianyungang City, Lianyungang, China
| | - Guanglu Wang
- Institute of Neuroscience, Department of Vascular Surgery, The First People’s Hospital of Lianyungang, Lianyungang, China,Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, China
| | - Haitao Yang
- Institute of Neuroscience, Department of Vascular Surgery, The First People’s Hospital of Lianyungang, Lianyungang, China,Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, China
| | - Jingquan Dong
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, China
| | - Honggang Zhang
- Institute of Neuroscience, Department of Vascular Surgery, The First People’s Hospital of Lianyungang, Lianyungang, China,*Correspondence: Honggang Zhang,
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Danielski LG, Giustina AD, Gava FF, Barichello T, Petronilho F. The Many Faces of Astrocytes in the Septic Brain. Mol Neurobiol 2022; 59:7229-7235. [PMID: 36136265 DOI: 10.1007/s12035-022-03027-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/31/2022] [Indexed: 10/14/2022]
Abstract
Sepsis is a life-threatening organ dysfunction that is caused by a dysregulated host response to infection. Surviving patients have cognitive and memory damage that started during sepsis. These neurologic damages have been associated with increased BBB permeability and microglial activation. However, a few discrete studies have seen over the years pointing to the potential role of astrocytes in the pathophysiology of neurological damage after sepsis. The purpose of this article is to review information on the potential role of astrocytes during sepsis, as well as to provoke further studies in this area. These published articles show astrocytic activation after sepsis; they also evidence the release of inflammatory mediators by these cells. In this sense, the role of astrocytes should be better elucidated during sepsis progression.
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Affiliation(s)
- Lucinéia Gainski Danielski
- Laboratory of Neurobiology of Inflammatory and Metabolic Processes, Graduate Program in Health Sciences, Health Sciences Unit, University of South Santa Catarina, Tubarao, SC, Brazil.,Laboratory of Experimental Neurology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciuma, SC, Brazil
| | - Amanda Della Giustina
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada
| | - Fernanda Frederico Gava
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciuma, SC, Brazil
| | - Tatiana Barichello
- Laboratory of Experimental Pathophysiology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciuma, SC, Brazil.,Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, Translational Psychiatry Program, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, 77054, USA
| | - Fabricia Petronilho
- Laboratory of Experimental Neurology, Graduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciuma, SC, Brazil.
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5
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Maly IV, Morales MJ, Pletnikov MV. Astrocyte Bioenergetics and Major Psychiatric Disorders. ADVANCES IN NEUROBIOLOGY 2021; 26:173-227. [PMID: 34888836 DOI: 10.1007/978-3-030-77375-5_9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ongoing research continues to add new elements to the emerging picture of involvement of astrocyte energy metabolism in the pathophysiology of major psychiatric disorders, including schizophrenia, mood disorders, and addictions. This review outlines what is known about the energy metabolism in astrocytes, the most numerous cell type in the brain, and summarizes the recent work on how specific perturbations of astrocyte bioenergetics may contribute to the neuropsychiatric conditions. The role of astrocyte energy metabolism in mental health and disease is reviewed on the organism, organ, and cell level. Data arising from genomic, metabolomic, in vitro, and neurobehavioral studies is critically analyzed to suggest future directions in research and possible metabolism-focused therapeutic interventions.
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Affiliation(s)
- Ivan V Maly
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York, Buffalo, NY, USA
| | - Michael J Morales
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York, Buffalo, NY, USA
| | - Mikhail V Pletnikov
- Department of Physiology and Biophysics, Jacobs School of Medicine and Biomedical Sciences, State University of New York, Buffalo, NY, USA.
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Gautam G, Parveen B, Umar Khan M, Sharma I, Kumar Sharma A, Parveen R, Ahmad S. A systematic review on nephron protective AYUSH drugs as constituents of NEERI-KFT (A traditional Indian polyherbal formulation) for the management of chronic kidney disease. Saudi J Biol Sci 2021; 28:6441-6453. [PMID: 34764761 PMCID: PMC8568826 DOI: 10.1016/j.sjbs.2021.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/30/2021] [Accepted: 07/04/2021] [Indexed: 12/24/2022] Open
Abstract
Chronic Kidney Disease (CKD) is a major health problem characterized by kidney dysfunction with progressive segmental glomerulosclerosis to end-stage renal disease (ESRD). Due to lack of scientific data and comprehensive reports, the current systematic review provides an inclusive understanding and prospective associated with phytopharmacology of NEERI-KFT in CKD. The data was collected from more than five databases such as Science Direct, Google Scholar, Elsevier, PubMed, Springer, ACS publication etc using keywords like CKD/Kidney disease, epidemiology/prevalence, modern therapies for CKD management, NEERI-KFT and its role in kidney disease. The study was performed based on scientific reports screened by experts according to inclusion and exclusion criteria. The pre-clinical and clinical findings suggested that NEERI-KFT has promising effects as nephroprotective and considered safe and well effective in primary care of kidney against disease. Phytopharmacological evaluation of NEERI-KFT suggest that it exhibit substantial potential against oxidative and inflammatory stress induced apoptosis by exerting antioxidants, nephroprotective and immunomodulatory effects. Hence, it can be enlighten that NEERI-KFT have potential herbs which exerts significant antioxidants, nephroprotective and immunomodulatory effects in the patients associated with renal dysfunction or CKD thus improving altered renal architecture and renal physiology. Clinically, it is concluded that NEERI-KFT works kidney malfunction and cease ESRD progression or even reduce the number of dialysis.
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Affiliation(s)
- Gaurav Gautam
- Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Bushra Parveen
- Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Mohammad Umar Khan
- Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Ikshit Sharma
- AIMIL Pharmaceuticals (India) Ltd, Saini Majra, Ropar Nalagarh Rd, Tehsil Nalagarh, Solan District, H.P 174101, India
| | - Anil Kumar Sharma
- AIMIL Pharmaceuticals (India) Ltd, Saini Majra, Ropar Nalagarh Rd, Tehsil Nalagarh, Solan District, H.P 174101, India
| | - Rabea Parveen
- Human Genetics Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Sayeed Ahmad
- Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
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7
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Cuenca-Bermejo L, Pizzichini E, Gonçalves VC, Guillén-Díaz M, Aguilar-Moñino E, Sánchez-Rodrigo C, González-Cuello AM, Fernández-Villalba E, Herrero MT. A New Tool to Study Parkinsonism in the Context of Aging: MPTP Intoxication in a Natural Model of Multimorbidity. Int J Mol Sci 2021; 22:4341. [PMID: 33919373 PMCID: PMC8122583 DOI: 10.3390/ijms22094341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/14/2021] [Accepted: 04/19/2021] [Indexed: 11/25/2022] Open
Abstract
The diurnal rodent Octodon degus (O. degus) is considered an attractive natural model for Alzheimer's disease and other human age-related features. However, it has not been explored so far if the O. degus could be used as a model to study Parkinson's disease. To test this idea, 10 adult male O. degus were divided into control group and MPTP-intoxicated animals. Motor condition and cognition were examined. Dopaminergic degeneration was studied in the ventral mesencephalon and in the striatum. Neuroinflammation was also evaluated in the ventral mesencephalon, in the striatum and in the dorsal hippocampus. MPTP animals showed significant alterations in motor activity and in visuospatial memory. Postmortem analysis revealed a significant decrease in the number of dopaminergic neurons in the ventral mesencephalon of MPTP animals, although no differences were found in their striatal terminals. We observed a significant increase in neuroinflammatory responses in the mesencephalon, in the striatum and in the hippocampus of MPTP-intoxicated animals. Additionally, changes in the subcellular expression of the calcium-binding protein S100β were found in the astrocytes in the nigrostriatal pathway. These findings prove for the first time that O. degus are sensitive to MPTP intoxication and, therefore, is a suitable model for experimental Parkinsonism in the context of aging.
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Affiliation(s)
- Lorena Cuenca-Bermejo
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Campus Mare Nostrum, University of Murcia, 30120 Murcia, Spain
| | - Elisa Pizzichini
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
- Department of Biology and Biotechnology “Charles Darwin” (BBCD), Sapienza, University of Rome, 00185 Rome, Italy
| | - Valeria C. Gonçalves
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
- Disciplina de Neurociência, Departamento de Neurologia e Neurocirurgia, Universidade Federal de São Paulo (UNIFESP), São Paulo 04039-032, Brazil
| | - María Guillén-Díaz
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
| | - Elena Aguilar-Moñino
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
| | - Consuelo Sánchez-Rodrigo
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Campus Mare Nostrum, University of Murcia, 30120 Murcia, Spain
| | - Ana-María González-Cuello
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Campus Mare Nostrum, University of Murcia, 30120 Murcia, Spain
| | - Emiliano Fernández-Villalba
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Campus Mare Nostrum, University of Murcia, 30120 Murcia, Spain
| | - María Trinidad Herrero
- Clinical and Experimental Neuroscience (NiCE), Institute for Aging Research (IUIE), School of Medicine, University of Murcia, 30100 Murcia, Spain; (L.C.-B.); (E.P.); (V.C.G.); (M.G.-D.); (E.A.-M.); (C.S.-R.); (A.-M.G.-C.)
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Campus Mare Nostrum, University of Murcia, 30120 Murcia, Spain
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8
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He M, Ma Y, Wang R, Zhang J, Jing L, Li PA. Deletion of Mitochondrial Uncoupling Protein 2 Exacerbates Mitochondrial Damage in Mice Subjected to Cerebral Ischemia and Reperfusion Injury under both Normo- and Hyperglycemic Conditions. Int J Biol Sci 2020; 16:2788-2802. [PMID: 33061796 PMCID: PMC7545711 DOI: 10.7150/ijbs.48204] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 08/06/2020] [Indexed: 12/22/2022] Open
Abstract
Deletion of mitochondrial uncoupling protein 2 (UCP2) has been shown to aggravate ischemic damage in the brain. However, the underlying mechanisms are not fully understood. The objective of this study is to explore the impact of homozygous UCP2 deletion (UCP2-/-) on mitochondrial fission and fusion dynamic balance in ischemic mice under normo- and hyperglycemic conditions. UCP2-/- and wildtype mice were subjected to a 60 min middle cerebral artery occlusion (MCAO) and allowed reperfusion for 6h, 24h and 72h. Our results demonstrated that deletion of UCP2 enlarged infarct volumes and increased numbers of cell death in both normo- and hyperglycemic ischemic mice compared with their wildtype counterparts subjected to the same duration of ischemia and reperfusion. The detrimental effects of UCP deletion were associated with increased ROS production, elevated mitochondrial fission markers Drp1 and Fis1 and suppressed fusion markers Opa1 and Mfn2 in UCP2-/- mice. Electron microscopic study demonstrated a marked mitochondrial swolling after 6h of reperfusion in UCP2-/- mice, contrasting to a mild mitochondrial swolling in wildtype ischemic animals. It is concluded that the exacerbating effects of UCP2-/- on ischemic outcome in both normo- and hyperglycemic animals are associated with increased ROS production, disturbed mitochondrial dynamic balance towards fission and early damage to mitochondrial ultrastructure.
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Affiliation(s)
- Maotao He
- Department of Pathology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China.,School of Basic Medical Sciences, Department of Pathology, Ningxia Medical University; Ningxia Key Laboratory of Vascular Injury and Repair, Yinchuan, Ningxia 750004, China.,Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), College of Health and Sciences, North Carolina Central University, Durham, NC 27707, USA
| | - Yanmei Ma
- School of Basic Medical Sciences, Department of Pathology, Ningxia Medical University; Ningxia Key Laboratory of Vascular Injury and Repair, Yinchuan, Ningxia 750004, China
| | - Rui Wang
- School of Basic Medical Sciences, Department of Pathology, Ningxia Medical University; Ningxia Key Laboratory of Vascular Injury and Repair, Yinchuan, Ningxia 750004, China
| | - Jianzhong Zhang
- School of Basic Medical Sciences, Department of Pathology, Ningxia Medical University; Ningxia Key Laboratory of Vascular Injury and Repair, Yinchuan, Ningxia 750004, China
| | - Li Jing
- School of Basic Medical Sciences, Department of Pathology, Ningxia Medical University; Ningxia Key Laboratory of Vascular Injury and Repair, Yinchuan, Ningxia 750004, China
| | - P Andy Li
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technological Enterprise (BRITE), College of Health and Sciences, North Carolina Central University, Durham, NC 27707, USA
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