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Kaiyrlykyzy A, Umbayev B, Masoud AR, Baibulatova A, Tsoy A, Olzhayev F, Alzhanova D, Zholdasbekova G, Davletov K, Akilzhanova A, Askarova S. Circulating adiponectin levels, expression of adiponectin receptors, and methylation of adiponectin gene promoter in relation to Alzheimer's disease. BMC Med Genomics 2022; 15:262. [PMID: 36527105 PMCID: PMC9756783 DOI: 10.1186/s12920-022-01420-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The role of adiponectin (ADIPOQ) in Alzheimer's disease (AD) has been documented, however, demonstrating controversial results. In this study, we investigated blood serum ADIPOQ levels, methylation of the adiponectin gene promoter, and adiponectin receptors (AdipoR1 and AdipoR2) expression in blood samples isolated from AD patients and healthy controls. METHODS We performed a case-control study including 248 subjects (98 AD patients and 150 healthy controls); ADIPOQ serum levels, AdipoR1, and AdipoR2 levels in PBMC were measured by ELISA Kits, and ADIPOQ gene methylation was analyzed using methyl-specific PCR. RESULTS Serum adiponectin levels were threefold higher in the AD group compared to the controls. We have also found a positive correlation between adiponectin and MMSE scores and high-density lipoprotein cholesterol (HDL-C) in AD patients. A significant difference in the proportion of methylation of the CpG sites at - 74 nt of the ADIPOQ gene promoter was detected in AD cases, and the levels of adiponectin in blood serum were significantly higher in methylated samples in the AD group compared to controls. The amount of AdipoR1 was significantly higher among AD subjects, while the expression of AdipoR2 did not vary between AD patients and controls. CONCLUSION These findings may contribute to a deeper understanding of the etiological factors leading to the development of dementia and may serve as a basis for the development of predictive biomarkers of AD.
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Affiliation(s)
- Aiym Kaiyrlykyzy
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan ,grid.77184.3d0000 0000 8887 5266Faculty of Medicine and Public Health, al-Farabi Kazakh National University, Almaty, Kazakhstan
| | - Bauyrzhan Umbayev
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan
| | - Abdul-Razak Masoud
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan ,grid.259237.80000000121506076Louisiana Tech University, Ruston, LA USA
| | - Aida Baibulatova
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan
| | - Andrey Tsoy
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan
| | - Farkhad Olzhayev
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan
| | - Dinara Alzhanova
- grid.501850.90000 0004 0467 386XDepartment of Neurology and Psychiatry, Astana Medical University, Astana, Kazakhstan ,Open Clinic, Astana, Kazakhstan
| | - Gulnaz Zholdasbekova
- grid.443557.40000 0004 0400 6856Karaganda State Medical University, Karaganda, Kazakhstan
| | - Kairat Davletov
- grid.443453.10000 0004 0387 8740Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - Ainur Akilzhanova
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan
| | - Sholpan Askarova
- grid.428191.70000 0004 0495 7803Center for Life Sciences, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana, Kazakhstan
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2
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Wang C, Du X, Fu F, Li X, Wang Z, Zhou Y, Gou L, Li W, Li J, Zhang J, Liao G, Li L, Han YP, Tong N, Liu J, Chen Y, Cheng J, Cao Q, Ilegems E, Lu Y, Zheng X, Berggren PO. Adiponectin gene therapy prevents islet loss after transplantation. J Cell Mol Med 2022; 26:4847-4858. [PMID: 35975481 PMCID: PMC9465193 DOI: 10.1111/jcmm.17515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 07/06/2022] [Accepted: 07/29/2022] [Indexed: 11/29/2022] Open
Abstract
Significant pancreatic islet dysfunction and loss shortly after transplantation to the liver limit the widespread implementation of this procedure in the clinic. Nonimmune factors such as reactive oxygen species and inflammation have been considered as the primary driving force for graft failure. The adipokine adiponectin plays potent roles against inflammation and oxidative stress. Previous studies have demonstrated that systemic administration of adiponectin significantly prevented islet loss and enhanced islet function at post‐transplantation period. In vitro studies indicate that adiponectin protects islets from hypoxia/reoxygenation injury, oxidative stress as well as TNF‐α‐induced injury. By applying adenovirus mediated transfection, we now engineered islet cells to express exogenous adiponectin gene prior to islet transplantation. Adenovirus‐mediated adiponectin transfer to a syngeneic suboptimal islet graft transplanted under kidney capsule markedly prevented inflammation, preserved islet graft mass and improved islet transplant outcomes. These results suggest that adenovirus‐mediated adiponectin gene therapy would be a beneficial clinical engineering approach for islet preservation in islet transplantation.
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Affiliation(s)
- Chengshi Wang
- Key Laboratory of Transplant Engineering and Immunology, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China.,Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaojiong Du
- Department of Vascular Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Fudong Fu
- West China Hospital, Institutes for Systems Genetics, Sichuan University, Chengdu, China
| | - Xiaoyu Li
- West China Hospital, Institutes for Systems Genetics, Sichuan University, Chengdu, China
| | - Zhenghao Wang
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China.,The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden
| | - Ye Zhou
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Liping Gou
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Li
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Juan Li
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Jiayi Zhang
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Guangneng Liao
- Key Laboratory of Transplant Engineering and Immunology, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China
| | - Lan Li
- Key Laboratory of Transplant Engineering and Immunology, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China
| | - Yuan-Ping Han
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, The Center for Growth, Metabolism and Aging, The College of Life Sciences, Sichuan University, Chengdu, China
| | - Nanwei Tong
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Jingping Liu
- Key Laboratory of Transplant Engineering and Immunology, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China
| | - Younan Chen
- Key Laboratory of Transplant Engineering and Immunology, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China
| | - Jingqiu Cheng
- Key Laboratory of Transplant Engineering and Immunology, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China
| | - Qi Cao
- Centre for Transplant and Renal Research, Westmead Institute for Medical Research, The University of Sydney, Sydney, New South Wales, Australia
| | - Erwin Ilegems
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and Immunology, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaofeng Zheng
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Per-Olof Berggren
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China.,The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Stockholm, Sweden
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3
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Marley AR, Ryder JR, Turcotte LM, Spector LG. Maternal obesity and acute lymphoblastic leukemia risk in offspring: A summary of trends, epidemiological evidence, and possible biological mechanisms. Leuk Res 2022; 121:106924. [PMID: 35939888 DOI: 10.1016/j.leukres.2022.106924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/13/2022] [Accepted: 08/01/2022] [Indexed: 10/16/2022]
Abstract
Acute lymphoblastic leukemia, a heterogenous malignancy characterized by uncontrolled proliferation of lymphoid progenitors and generally initiated in utero, is the most common pediatric cancer. Although incidence of ALL has been steadily increasing in recent decades, no clear reason for this trend has been identified. Rising concurrently with ALL incidence, increasing maternal obesity rates may be partially contributing to increasing ALL prevelance. Epidemiological studies, including a recent meta-analysis, have found an association between maternal obesity and leukemogenesis in offspring, although mechanisms underlying this association remain unknown. Therefore, the purpose of this review is to propose possible mechanisms connecting maternal obesity to ALL risk in offspring, including changes to fetal/neonatal epigenetics, altered insulin-like growth factor profiles and insulin resistance, modified adipokine production and secretion, changes to immune cell populations, and impacts on birthweight and childhood obesity/adiposity. We describe how each proposed mechanism is biologically plausible due to their connection with maternal obesity, presence in neonatal and/or fetal tissue, observation in pediatric ALL patients at diagnosis, and association with leukemogenesis, A description of ALL and maternal obesity trends, a summary of epidemiological evidence, a discussion of the pathway from intrauterine environment to subsequent malignancy, and propositions for future directions are also presented.
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Affiliation(s)
- Andrew R Marley
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA.
| | - Justin R Ryder
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA; Center for Pediatric Obesity Medicine, Department of Pediatrics, University of Minnesota, 2450 Riverside Ave S AO-102, Minneapolis, MN 55454, USA
| | - Lucie M Turcotte
- Division of Hematology/Oncology, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 484, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, 425 East River Parkway, Minneapolis, MN 55455, USA
| | - Logan G Spector
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, 425 East River Parkway, Minneapolis, MN 55455, USA
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4
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Clain J, Couret D, Planesse C, Krejbich-Trotot P, Meilhac O, Lefebvre d’Hellencourt C, Viranaicken W, Diotel N. Distribution of Adiponectin Receptors in the Brain of Adult Mouse: Effect of a Single Dose of the Adiponectin Receptor Agonist, AdipoRON, on Ischemic Stroke. Brain Sci 2022; 12:brainsci12050680. [PMID: 35625066 PMCID: PMC9139333 DOI: 10.3390/brainsci12050680] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/08/2022] [Accepted: 05/16/2022] [Indexed: 12/10/2022] Open
Abstract
Adiponectin exhibits pleiotropic effects, including anti-inflammatory, anti-apoptotic, anti-oxidant, and neuroprotective ones. Although some studies have documented brain expression in different rodent models of its receptors, AdipoR1 and AdipoR2, their global distribution remains incomplete. Here, we demonstrated that both AdipoR are widely distributed in the brains of adult mice. Furthermore, by double immunostaining studies, we showed that AdipoR1 and AdipoR2 are mainly expressed in neurons and blood vessels. Then, considering the wide distribution of both receptors and the neuroprotective effects of adiponectin, we tested the therapeutic effect of a single injection of the adiponectin receptor agonist, AdipoRON (5 mg.kg−1), 24 h after stroke in a model of middle cerebral artery occlusion technique (MCAO). Under our experimental conditions, we demonstrated that AdipoRON did not modulate the infarct volume, cell death, neuroinflammatory parameters including microglia activation and oxidative stress. This study suggests that a protocol based on multiple injections of AdipoRON at a higher dose after MCAO could be considered to promote the therapeutic properties of AdipoRON on the brain repair mechanism and recovery.
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Affiliation(s)
- Julien Clain
- Université de la Réunion, INSERM, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Plateforme CYROI, 97490 Sainte-Clotilde, France; (J.C.); (D.C.); (C.P.); (O.M.); (C.L.d.)
| | - David Couret
- Université de la Réunion, INSERM, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Plateforme CYROI, 97490 Sainte-Clotilde, France; (J.C.); (D.C.); (C.P.); (O.M.); (C.L.d.)
- CHU de La Réunion, 97400 Saint-Denis, France
| | - Cynthia Planesse
- Université de la Réunion, INSERM, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Plateforme CYROI, 97490 Sainte-Clotilde, France; (J.C.); (D.C.); (C.P.); (O.M.); (C.L.d.)
| | - Pascale Krejbich-Trotot
- Processus Infectieux en Milieu Insulaire Tropical (PIMIT), INSERM, UMR 1187, CNRS UMR9192, IRD UMR249, Université de La Réunion, 94791 Sainte-Clotilde, France;
| | - Olivier Meilhac
- Université de la Réunion, INSERM, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Plateforme CYROI, 97490 Sainte-Clotilde, France; (J.C.); (D.C.); (C.P.); (O.M.); (C.L.d.)
- CHU de La Réunion, 97400 Saint-Denis, France
| | - Christian Lefebvre d’Hellencourt
- Université de la Réunion, INSERM, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Plateforme CYROI, 97490 Sainte-Clotilde, France; (J.C.); (D.C.); (C.P.); (O.M.); (C.L.d.)
| | - Wildriss Viranaicken
- Processus Infectieux en Milieu Insulaire Tropical (PIMIT), INSERM, UMR 1187, CNRS UMR9192, IRD UMR249, Université de La Réunion, 94791 Sainte-Clotilde, France;
- Correspondence: (W.V.); (N.D.)
| | - Nicolas Diotel
- Université de la Réunion, INSERM, UMR 1188 Diabète Athérothrombose Thérapies Réunion Océan Indien (DéTROI), Plateforme CYROI, 97490 Sainte-Clotilde, France; (J.C.); (D.C.); (C.P.); (O.M.); (C.L.d.)
- Correspondence: (W.V.); (N.D.)
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5
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Chyra M, Roczniak W, Świętochowska E, Dudzińska M, Oświęcimska J. The Effect of the Ketogenic Diet on Adiponectin, Omentin and Vaspin in Children with Drug-Resistant Epilepsy. Nutrients 2022; 14:nu14030479. [PMID: 35276837 PMCID: PMC8839826 DOI: 10.3390/nu14030479] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/14/2022] [Accepted: 01/20/2022] [Indexed: 02/07/2023] Open
Abstract
Background: Changes in adipokine secretion may be involved in the anti-epileptic effect of a ketogenic diet (KD) in drug-resistant epilepsy (DRE). Objectives: The assessment of the influence of KD on serum adiponectin, omentin-1, and vaspin in children with DRE. Methods: Anthropometric measurements (weight, height, BMI, and waist-to-hip circumference ratio) were performed in 72 children aged 3–9 years, divided into 3 groups: 24 children with DRE treated with KD, 26—treated with valproic acid (VPA), and a control group of 22 children. Biochemical tests included fasting glucose, insulin, beta-hydroxybutyric acid, lipid profile, aminotransferases activities, and blood gasometry. Serum levels of adiponectin, omentin-1 and vaspin were assayed using commercially available ELISA tests. Results: Serum levels of adiponectin and omentin-1 in the KD group were significantly higher and vaspin—lower in comparison to patients receiving VPA and the control group. In all examined children, serum adiponectin and omentin-1 correlated negatively with WHR and serum triglycerides, insulin, fasting glucose, and HOMA-IR. Vaspin levels correlated negatively with serum triglycerides and positively with body weight, BMI, fasting glucose, insulin, and HOMA-IR. Conclusion: One of the potential mechanisms of KD in children with drug-resistant epilepsy may be a modulation of metabolically beneficial and anti-inflammatory adipokine levels.
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Affiliation(s)
- Marcin Chyra
- Department of Paediatric Neurology, Independent Public Healthcare Centre—Municipal Hospital Complex, ul. Władysława Truchana 7, 41-500 Chorzow, Poland;
- Correspondence: ; Tel.: +48-32-349-00-85; Fax: +48-32-349-01-50
| | - Wojciech Roczniak
- Institute of Medicine, Jan Grodek State University in Sanok, ul. Mickiewicza 21, 38-500 Sanok, Poland; (W.R.); (J.O.)
| | - Elżbieta Świętochowska
- Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, ul. Jordana 19, 41-808 Zabrze, Poland;
| | - Magdalena Dudzińska
- Department of Paediatric Neurology, Independent Public Healthcare Centre—Municipal Hospital Complex, ul. Władysława Truchana 7, 41-500 Chorzow, Poland;
| | - Joanna Oświęcimska
- Institute of Medicine, Jan Grodek State University in Sanok, ul. Mickiewicza 21, 38-500 Sanok, Poland; (W.R.); (J.O.)
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Tournissac M, Leclerc M, Valentin-Escalera J, Vandal M, Bosoi CR, Planel E, Calon F. Metabolic determinants of Alzheimer's disease: A focus on thermoregulation. Ageing Res Rev 2021; 72:101462. [PMID: 34534683 DOI: 10.1016/j.arr.2021.101462] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/09/2021] [Accepted: 09/11/2021] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) is a complex age-related neurodegenerative disease, associated with central and peripheral metabolic anomalies, such as impaired glucose utilization and insulin resistance. These observations led to a considerable interest not only in lifestyle-related interventions, but also in repurposing insulin and other anti-diabetic drugs to prevent or treat dementia. Body temperature is the oldest known metabolic readout and mechanisms underlying its maintenance fail in the elderly, when the incidence of AD rises. This raises the possibility that an age-associated thermoregulatory deficit contributes to energy failure underlying AD pathogenesis. Brown adipose tissue (BAT) plays a central role in thermogenesis and maintenance of body temperature. In recent years, the modulation of BAT activity has been increasingly demonstrated to regulate energy expenditure, insulin sensitivity and glucose utilization, which could also provide benefits for AD. Here, we review the evidence linking thermoregulation, BAT and insulin-related metabolic defects with AD, and we propose mechanisms through which correcting thermoregulatory impairments could slow the progression and delay the onset of AD.
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Perdoncin M, Konrad A, Wyner JR, Lohana S, Pillai SS, Pereira DG, Lakhani HV, Sodhi K. A Review of miRNAs as Biomarkers and Effect of Dietary Modulation in Obesity Associated Cognitive Decline and Neurodegenerative Disorders. Front Mol Neurosci 2021; 14:756499. [PMID: 34690698 PMCID: PMC8529023 DOI: 10.3389/fnmol.2021.756499] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 09/10/2021] [Indexed: 12/12/2022] Open
Abstract
There has been a progressive increase in the prevalence of obesity and its comorbidities such as type 2 diabetes and cardiovascular diseases worldwide. Recent studies have suggested that the crosstalk between adipose tissue and central nervous system (CNS), through cellular mediators and signaling pathways, may causally link obesity with cognitive decline and give rise to neurodegenerative disorders. Several mechanisms have been proposed in obesity, including inflammation, oxidative stress, insulin resistance, altered lipid and cholesterol homeostasis, which may result in neuroinflammation, altered brain insulin signaling, amyloid-beta (Aβ) deposition and neuronal cell death. Since obesity is associated with functional and morphological alterations in the adipose tissues, the resulting peripheral immune response augments the development and progression of cognitive decline and increases susceptibility of neurodegenerative disorders, such as Alzheimer's Disease (AD) and Parkinson's Disease (PD). Studies have also elucidated an important role of high fat diet in the exacerbation of these clinical conditions. However, the underlying factors that propel and sustain this obesity associated cognitive decline and neurodegeneration, remains highly elusive. Moreover, the mechanisms linking these phenomena are not well-understood. The cumulative line of evidence have demonstrated an important role of microRNAs (miRNAs), a class of small non-coding RNAs that regulate gene expression and transcriptional changes, as biomarkers of pathophysiological conditions. Despite the lack of utility in current clinical practices, miRNAs have been shown to be highly specific and sensitive to the clinical condition being studied. Based on these observations, this review aims to assess the role of several miRNAs and aim to elucidate underlying mechanisms that link obesity with cognitive decline and neurodegenerative disorders. Furthermore, this review will also provide evidence for the effect of dietary modulation which can potentially ameliorate cognitive decline and neurodegenerative diseases associated with obesity.
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Affiliation(s)
| | | | | | | | | | | | | | - Komal Sodhi
- Department of Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
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Adiponectin Treatment Attenuates Cerebral Ischemia-Reperfusion Injury through HIF-1 α-Mediated Antioxidation in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5531048. [PMID: 34336097 PMCID: PMC8298180 DOI: 10.1155/2021/5531048] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/01/2021] [Accepted: 05/10/2021] [Indexed: 01/01/2023]
Abstract
Adiponectin (ADPN) plays an important role in cerebral ischemia-reperfusion injury. Although previous studies have confirmed that ADPN pretreatment has a protective effect on ischemic stroke, the therapeutic effect of ADPN on ischemic stroke and the underlying mechanism are still unclear. In order to clarify these questions, focal transient cerebral ischemia was induced by middle cerebral artery occlusion (MCAO) in mice and ADPN was administered for three times at 6 h, 24 h, and 48 h after reperfusion. Meanwhile, a virus-delivered HIF-1α siRNA was used before ADPN administration. The infarct volume, neurological score, cellular apoptosis, and oxidative stress were assessed at 72 h after reperfusion. The long-term outcome of mice after stroke was recorded as well. The results indicated that ADPN treatment reduced the infarct volume (P = 0.032), neurological deficits (P = 0.047), cellular apoptosis (P = 0.041), and oxidative responses (P = 0.031) at 72 h after MCAO. Moreover, ADPN increased both the protein level and transcriptional activity of HIF-1α as evidenced by the transcription levels of VEGF (P = 0.046) and EPO (P = 0.043) at 72 h after MCAO. However, knockdown of HIF-1α partially reversed the antioxidant and treatment effect of ADPN after cerebral ischemia. In the observation of long-term outcome after ADPN treatment, it demonstrated that ADPN not only prevented the cerebral atrophy (P = 0.031) and the neurological function decline (P = 0.048), but also promoted angiogenesis (P = 0.028) after stroke. In conclusion, our findings suggest that ADPN is effective in treatment of ischemic stroke which could be attributed to the increased antioxidant capacity regulated by HIF-1α.
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Guzmán-Ruiz MA, Herrera-González A, Jiménez A, Candelas-Juárez A, Quiroga-Lozano C, Castillo-Díaz C, Orta-Salazar E, Organista-Juárez D, Díaz-Cintra S, Guevara-Guzmán R. Protective effects of intracerebroventricular adiponectin against olfactory impairments in an amyloid β 1-42 rat model. BMC Neurosci 2021; 22:14. [PMID: 33653273 PMCID: PMC7927416 DOI: 10.1186/s12868-021-00620-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 02/23/2021] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Alzheimer's disease (AD) is characterized by cognitive impairment that eventually develops into dementia. Amyloid-beta (Aβ) accumulation is a widely described hallmark in AD, and has been reported to cause olfactory dysfunction, a condition considered an early marker of the disease associated with injuries in the olfactory bulb (OB), the hippocampus (HIPP) and other odor-related cortexes. Adiponectin (APN) is an adipokine with neuroprotective effects. Studies have demonstrated that APN administration decreases Aβ neurotoxicity and Tau hyperphosphorylation in the HIPP, reducing cognitive impairment. However, there are no studies regarding the neuroprotective effects of APN in the olfactory dysfunction observed in the Aβ rat model. The aim of the present study is to determine whether the intracerebroventricular (i.c.v) administration of APN prevents the early olfactory dysfunction in an i.c.v Amyloid-beta1-42 (Aβ1-42) rat model. Hence, we evaluated olfactory function by using a battery of olfactory tests aimed to assess olfactory memory, discrimination and detection in the Aβ rat model treated with APN. In addition, we determined the number of cells expressing the neuronal nuclei (NeuN), as well as the number of microglial cells by using the ionized calcium-binding adapter molecule 1 (Iba-1) marker in the OB and, CA1, CA3, hilus and dentate gyrus (DG) in the HIPP. Finally, we determined Arginase-1 expression in both nuclei through Western blot. RESULTS We observed that the i.c.v injection of Aβ decreased olfactory function, which was prevented by the i.c.v administration of APN. In accordance with the olfactory impairment observed in i.c.v Aβ-treated rats, we observed a decrease in NeuN expressing cells in the glomerular layer of the OB, which was also prevented with the i.c.v APN. Furthermore, we observed an increase of Iba-1 cells in CA1, and DG in the HIPP of the Aβ rats, which was prevented by the APN treatment. CONCLUSION The present study describes the olfactory impairment of Aβ treated rats and evidences the protective role that APN plays in the brain, by preventing the olfactory impairment induced by Aβ1-42. These results may lead to APN-based pharmacological therapies aimed to ameliorate AD neurotoxic effects.
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Affiliation(s)
- Mara A Guzmán-Ruiz
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Amor Herrera-González
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Adriana Jiménez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Alan Candelas-Juárez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Crystal Quiroga-Lozano
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Claudia Castillo-Díaz
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Erika Orta-Salazar
- Departamento de Neurobiología del desarrollo y neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro, Mexico
| | - Diana Organista-Juárez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico
| | - Sofía Díaz-Cintra
- Departamento de Neurobiología del desarrollo y neurofisiología, Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro, Mexico
| | - Rosalinda Guevara-Guzmán
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico.
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[D-Ala 2, D-Leu 5] Enkephalin Inhibits TLR4/NF- κB Signaling Pathway and Protects Rat Brains against Focal Ischemia-Reperfusion Injury. Mediators Inflamm 2021; 2021:6661620. [PMID: 33628116 PMCID: PMC7895595 DOI: 10.1155/2021/6661620] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/22/2021] [Accepted: 01/27/2021] [Indexed: 11/17/2022] Open
Abstract
Background Cerebral ischemia-reperfusion (I/R) injury is the main cause of acute brain injury, which is a life-threatening disease due to the lack of effective treatments. [D-Ala2, D-Leu5] enkephalin (DADLE) is a synthetic delta-opioid receptor agonist that is reported to confer neuroprotective effect; however, the underlying mechanism is still being explored. The purpose of the present study is to determine whether DADLE administrated intracerebroventricularly could attenuate the cerebral I/R injury, to determine if this is through inhibiting the toll-like receptor 4 (TLR4)/nuclear factor kappa B (NF-κB) signaling pathway and therefore inhibiting neuroinflammation in an ischemic stroke model. Methods Rats were subjected to 120 minutes of ischemia by transient middle cerebral artery occlusion (MCAO). At 45 minutes after ischemia, DADLE or control vehicle (artificial cerebrospinal fluid, ACSF) was given to the rats intracerebroventricularly. Neurological deficit, cerebral infarct volume, and histopathological changes were assessed at 24 hours after reperfusion. Brain inflammation was assessed by measuring tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in the ischemic penumbra by ELISA. The expression of TLR4 was determined by immunohistochemistry staining and western blotting. The expression of NF-κB was investigated by western blotting. Results Compared with the vehicle-treatment (ACSF), DADEL improved neurological deficit (9.6 ± 2.1 versus 13.8 ± 1.9), reduced cerebral infarct volume (18.74 ± 3.30% versus 10.57 ± 2.50%), and increased the number of normal neurons (29.72 ± 8.53% versus 51.37 ± 9.18%) after cerebral I/R injury in rats (all P < 0.05). Expressions of inflammatory molecules including TNF-α and IL-6 were highly expressed in the vehicle-treated rats, whereas treatment with DADLE downregulated these expressions (P < 0.05). Additionally, cerebral I/R injury significantly increased the TLR4 and NF-κB expression in vehicle-control group, which was markedly inhibited by DADLE (P < 0.05). Conclusions DADLE, administrated intracerebroventricularly at 45 minutes after cerebral ischemia, significantly ameliorated I/R-induced brain damage in rats. This kind of neuroprotective effect appears to be related to the downregulation of TLR4-mediated inflammatory responses.
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11
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Selective accumulation of adiponectin in the cerebral cortex under chronic cerebral hypoperfusion in the rat. Neuroreport 2021; 31:148-155. [PMID: 31855901 DOI: 10.1097/wnr.0000000000001391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Adiponectin is a plasma protein predominantly derived from adipocytes. Adiponectin has beneficial properties against diabetes, cardiovascular diseases, and cancer. In experimental acute cerebral ischemia, adiponectin accumulates on vessels in ischemic lesions and has anti-inflammatory protective effects. Chronic cerebral hypoperfusion is associated with white matter lesions and risk of dementia. Chronic cerebral hypoperfusion induced by permanent occlusion of the bilateral common carotid artery can experimentally produce cerebrovascular white matter lesions in the rat brain. Microglia are activated shortly after ischemia and correlate with the severity of white matter and hippocampal tissue damage. These data suggest that the inflammatory response selectively increases white matter and hippocampal damage during chronic cerebral hypoperfusion. However, factors protecting the cerebral cortex have not been elucidated. To clarify the role of adiponectin, we investigated possible changes in adiponectin and adiponectin receptor 1 (ADR1) in the brains of rats under chronic cerebral hypoperfusion. Adiponectin accumulated on the vessels predominantly in the cerebral cortex under chronic cerebral hypoperfusion. Adiponectin accumulation was not detected in the white matter or hippocampus. In the cerebral cortex, the number of ADR1-immunopositive vessels was increased, and adiponectin was colocalized with ADR1. It is plausible that accumulation of adiponectin may be mediated by the binding of adiponectin to ADR1, and its accumulation in the cerebral cortex may protect tissue injury by inhibiting inflammation under chronic cerebral hypoperfusion.
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12
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Uddin MS, Rahman MM, Sufian MA, Jeandet P, Ashraf GM, Bin-Jumah MN, Mousa SA, Abdel-Daim MM, Akhtar MF, Saleem A, Amran MS. Exploring the New Horizon of AdipoQ in Obesity-Related Alzheimer's Dementia. Front Physiol 2021; 11:567678. [PMID: 33584324 PMCID: PMC7873563 DOI: 10.3389/fphys.2020.567678] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 12/21/2020] [Indexed: 12/15/2022] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia, which causes abnormalities in learning, thinking, memory, as well as behavior. Generally, symptoms of AD develop gradually and aggravate over time, and consequently severely interfere with daily activities. Furthermore, obesity is one of the common risk factors for dementia. Dysregulation of adipokine and adipocyte dysfunction are assumed to be accountable for the high risk of obesity in people that develop many related disorders such as AD. Moreover, it has been observed that the dysfunction of adipose is connected with changes in brain metabolism, brain atrophy, cognitive decline, impaired mood, neuroinflammation, impaired insulin signaling, and neuronal dysfunction in people with obesity. Conversely, the pathological mechanisms, as well as the molecular players which are involved in this association, have been unclear until now. In this article, we discuss the impact of adiponectin (AdipoQ) on obesity-related Alzheimer's dementia.
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Affiliation(s)
- Md. Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh
- Pharmakon Neuroscience Research Network, Dhaka, Bangladesh
| | - Md. Motiar Rahman
- Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen, China
| | - Mohammad Abu Sufian
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh
- Pharmakon Neuroscience Research Network, Dhaka, Bangladesh
| | - Philippe Jeandet
- Research Unit, Induced Resistance and Plant Bioprotection, EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, University of Reims Champagne-Ardenne, Reims Cedex, France
| | - Ghulam Md. Ashraf
- Pre-clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - May N. Bin-Jumah
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Shaker A. Mousa
- Pharmaceutical Research Institute, Albany College of Pharmacy and Health Sciences, New York, NY, United States
| | - Mohamed M. Abdel-Daim
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Muhammad Furqan Akhtar
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Lahore, Pakistan
| | - Ammara Saleem
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Md. Shah Amran
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Dhaka, Bangladesh
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Wang Y, Liu F, Liu P. 23-Hydroxytormentic acid reduces cerebral ischemia/reperfusion damage in rats through anti-apoptotic, antioxidant, and anti-inflammatory mechanisms. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:1045-1054. [PMID: 33394135 DOI: 10.1007/s00210-020-02038-2] [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: 02/09/2020] [Accepted: 12/08/2020] [Indexed: 11/25/2022]
Abstract
23-Hydroxytormentic acid (23-HTA) is an important herbal medicine purified from immature fruits of African Rubus aceae (Rosaceae). This study was carried out to examine the protection properties and potential mechanisms of 23-HTA against cerebral ischemia/reperfusion (I/R) damage. Rats underwent middle cerebral artery occlusion/reperfusion (MCAO/R) 2/24 h. All animals were euthanized 24 h after reperfusion. Rats were injected with various concentrations of 23-HTA intraperitoneally. Evaluations of infarct volumes, neurological deficit, and brain water contents were carried out to assess the outcome of 23-HTA treatment. The results showed that 23-HTA reduced infarct volumes, brain water content, and neurological deficit in a dosage-dependent manner. 23-HTA can also significantly reduce the numbers of TUNEL-positive cells, the expression levels of Bax, caspase-3, lipid peroxidation, Sod 1, Sod 2, catalase, and pro-inflammatory cytokines TNF and IL-1β and increase the expression levels of Bcl-2 and p-Akt. 23-HTA has a neuroprotective effect due to its anti-apoptotic, antioxidant, and anti-inflammatory effects.
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Affiliation(s)
- Yamin Wang
- Department of Neurology, The 80th Army Hospital of the Chinese People's Liberation Army, No.256 Beigong West Street, Weicheng District, Weifang, 261041, Shandong, China
| | - Fengrong Liu
- Department of Neurology, The 80th Army Hospital of the Chinese People's Liberation Army, No.256 Beigong West Street, Weicheng District, Weifang, 261041, Shandong, China
| | - Peng Liu
- Department of Neurology, The 80th Army Hospital of the Chinese People's Liberation Army, No.256 Beigong West Street, Weicheng District, Weifang, 261041, Shandong, China.
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14
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Chen JR, Jin MF, Tang L, Liu YY, Ni H. Acute Phase Serum Leptin, Adiponectin, Interleukin-6, and Visfatin Are Altered in Chinese Children With Febrile Seizures: A Cross-Sectional Study. Front Endocrinol (Lausanne) 2020; 11:531. [PMID: 33042001 PMCID: PMC7522506 DOI: 10.3389/fendo.2020.00531] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 06/30/2020] [Indexed: 12/22/2022] Open
Abstract
Adipokines, including leptin, visfatin, adiponectin, and interleukin-6 (IL)-6, play multiple roles in the pathophysiology of epilepsy and febrile seizures (FS). We aimed to investigate the associations among plasma adipokines, mainly leptin, visfatin, adiponectin, or IL-6, and the prognosis of FS. This prospective cross-sectional study was conducted from January 2017 to December 2018 at the Wuxi Second People' Hospital China. The levels of serum leptin, visfatin, adiponectin, and IL-6 in 55 children with FS (FS group) were compared with 42 febrile children without seizure (FC group) and 48 healthy children (HC group) in an acute phase. The correlation with clinical indicators was determined by logistic regression analysis. Serum adiponectin and IL-6 levels were significantly higher in the FS group than in the FC and HC groups (p < 0.05), but there was no statistical difference between the FC and HC groups. In addition, logistic regression analysis showed that high concentrations of adiponectin and IL-6 were significantly associated with the occurrence of FS. For leptin and visfatin, they were significantly lower in the FS and FC groups than in the normal control group, but there was no statistical difference between the FS and FC groups. Our results suggest that higher plasma levels of IL-6 and adiponectin may serve as an additional biomarker in the early treatment or follow-up of the FS children.
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Affiliation(s)
- Jie-ru Chen
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
- Wuxi Second People's Hospital, Wuxi, China
| | - Mei-fang Jin
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
| | - Ling Tang
- Wuxi Second People's Hospital, Wuxi, China
| | - Yue-ying Liu
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
| | - Hong Ni
- Division of Brain Science, Institute of Pediatric Research, Children's Hospital of Soochow University, Suzhou, China
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15
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Adiponectin Reverses the Hypothalamic Microglial Inflammation during Short-Term Exposure to Fat-Rich Diet. Int J Mol Sci 2019; 20:ijms20225738. [PMID: 31731705 PMCID: PMC6888062 DOI: 10.3390/ijms20225738] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 11/12/2019] [Indexed: 12/29/2022] Open
Abstract
Adiponectin, an adipokine derived from the adipose tissue, manifests anti-inflammatory effects in the metabolically active organs and is, therefore, beneficial in various metabolic diseases associated with inflammation. However, the role of adiponectin in alleviating the hypothalamic inflammation connected to the pathogenesis of obesity has not yet been clearly interrogated. Here, we identified that the systemic administration of adiponectin suppresses the activation of microglia and thereby reverses the hypothalamic inflammation during short-term exposure to a high-fat diet. Additionally, we show that adiponectin induces anti-inflammatory effects in the microglial cell line subjected to an exogenous treatment with a saturated free fatty acid. In conclusion, the current study suggests that adiponectin suppresses the saturated free fatty acid-triggered the hypothalamic inflammation by modulating the microglial activation and thus maintains energy homeostasis.
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16
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Tu Q, Liu S, Chen T, Li Z, Lin D. Effects of adiponectin on random pattern skin flap survival in rats. Int Immunopharmacol 2019; 76:105875. [DOI: 10.1016/j.intimp.2019.105875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/31/2019] [Accepted: 09/01/2019] [Indexed: 11/29/2022]
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17
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Borshchev YY, Uspensky YP, Galagudza MM. Pathogenetic pathways of cognitive dysfunction and dementia in metabolic syndrome. Life Sci 2019; 237:116932. [PMID: 31606384 DOI: 10.1016/j.lfs.2019.116932] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 09/27/2019] [Accepted: 10/02/2019] [Indexed: 12/13/2022]
Abstract
The prevalence of dementia worldwide is growing at an alarming rate. A number of studies and meta-analyses have provided evidence for increased risk of dementia in patients with metabolic syndrome (MS) as compared to persons without MS. However, there are some reports demonstrating a lack of association between MS and increased dementia risk. In this review, taking into account the potential role of individual MS components in the pathogenesis of MS-related cognitive dysfunction, we considered the underlying mechanisms in arterial hypertension, diabetes mellitus, dyslipidemia, and obesity. The pathogenesis of dementia in MS is multifactorial, involving both vascular injury and non-ischemic neuronal death due to neurodegeneration. Neurodegenerative and ischemic lesions do not simply coexist in the brain due to independent evolution, but rather exacerbate each other, leading to more severe consequences for cognition than would either pathology alone. In addition to universal mechanisms of cognitive dysfunction shared by all MS components, other pathogenetic pathways leading to cognitive deficits and dementia, which are specific for each component, also play a role. Examples of such component-specific pathogenetic pathways include central insulin resistance and hypoglycemia in diabetes, neuroinflammation and adipokine imbalance in obesity, as well as arteriolosclerosis and lipohyalinosis in arterial hypertension. A more detailed understanding of cognitive disorders based on the recognition of underlying molecular mechanisms will aid in the development of new methods for prevention and treatment of devastating cognitive problems in MS.
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Affiliation(s)
- Yury Yu Borshchev
- Institute of Experimental Medicine, Almazov National Medical Research Center, Saint Petersburg, Russian Federation
| | - Yury P Uspensky
- Department of Faculty Therapy, Saint Petersburg State Pediatric Medical University, Saint Petersburg, Russian Federation
| | - Michael M Galagudza
- Laboratory of Digital and Display Holography, ITMO University, Russian Federation, Saint Petersburg, Russian Federation.
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18
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Rastegar S, Parimisetty A, Cassam Sulliman N, Narra SS, Weber S, Rastegar M, Viranaicken W, Couret D, Planesse C, Strähle U, Meilhac O, Lefebvre d'Hellencourt C, Diotel N. Expression of adiponectin receptors in the brain of adult zebrafish and mouse: Links with neurogenic niches and brain repair. J Comp Neurol 2019; 527:2317-2333. [DOI: 10.1002/cne.24669] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 02/18/2019] [Accepted: 02/26/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Sepand Rastegar
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
| | - Avinash Parimisetty
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Nora Cassam Sulliman
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Sai Sandhya Narra
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Sabrina Weber
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
| | - Maryam Rastegar
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
| | - Wildriss Viranaicken
- Université de La Réunion, INSERM, UMR 1187, Processus Infectieux en Milieu Insulaire Tropical (PIMIT), CNRS UMR9192, IRD UMR249 Saint‐Denis de La Réunion France
| | - David Couret
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
- CHU de La Réunion Saint‐Denis France
| | - Cynthia Planesse
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Uwe Strähle
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology Eggenstein‐Leopoldshafen Germany
| | - Olivier Meilhac
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
- CHU de La Réunion Saint‐Denis France
| | - Christian Lefebvre d'Hellencourt
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
| | - Nicolas Diotel
- Université de La Réunion, INSERM, UMR 1188, Diabète athérothrombose Thérapies Réunion Océan Indien (DéTROI) Saint‐Denis de La Réunion France
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19
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Forny-Germano L, De Felice FG, Vieira MNDN. The Role of Leptin and Adiponectin in Obesity-Associated Cognitive Decline and Alzheimer's Disease. Front Neurosci 2019; 12:1027. [PMID: 30692905 PMCID: PMC6340072 DOI: 10.3389/fnins.2018.01027] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/19/2019] [Indexed: 12/14/2022] Open
Abstract
Cross-talk between adipose tissue and central nervous system (CNS) underlies the increased risk of obese people to develop brain diseases such as cognitive and mood disorders. Detailed mechanisms for how peripheral changes caused by adipose tissue accumulation in obesity impact the CNS to cause brain dysfunction are poorly understood. Adipokines are a large group of substances secreted by the white adipose tissue to regulate a wide range of homeostatic processes including, but not limited to, energy metabolism and immunity. Obesity is characterized by a generalized change in the levels of circulating adipokines due to abnormal accumulation and dysfunction of adipose tissue. Altered adipokine levels underlie complications of obesity as well as the increased risk for the development of obesity-related comorbidities such as type 2 diabetes, cardiovascular and neurodegenerative diseases. Here, we review the literature for the role of adipokines as key mediators of the communication between periphery and CNS in health and disease. We will focus on the actions of leptin and adiponectin, two of the most abundant and well studied adipokines, in the brain, with particular emphasis on how altered signaling of these adipokines in obesity may lead to cognitive dysfunction and augmented risk for Alzheimer's disease. A better understanding of adipokine biology in brain disorders may prove of major relevance to diagnostic, prevention and therapy.
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Affiliation(s)
- Leticia Forny-Germano
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda G. De Felice
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Centre for Neuroscience Studies, Department of Psychiatry, Queen’s University, Kingston, ON, Canada
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20
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Jackson K, Dressler N, Ben-Shushan RS, Meerson A, LeBaron TW, Tamir S. Effects of alkaline-electrolyzed and hydrogen-rich water, in a high-fat-diet nonalcoholic fatty liver disease mouse model. World J Gastroenterol 2018; 24:5095-5108. [PMID: 30568387 PMCID: PMC6288656 DOI: 10.3748/wjg.v24.i45.5095] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 10/31/2018] [Accepted: 11/09/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To identify the effect of hydrogen-rich water (HRW) and electrolyzed-alkaline water (EAW) on high-fat-induced non-alcoholic fatty acid disease in mice.
METHODS Mice were divided into four groups: (1) Regular diet (RD)/regular water (RW); (2) high-fat diet (HFD)/RW; (3) RD/EAW; and (4) HFD/EAW. Weight and body composition were measured. After twelve weeks, animals were sacrificed, and livers were processed for histology and reverse-transcriptase polymerase chain reaction. A similar experiment was performed using HRW to determine the influence and importance of molecular hydrogen (H2) in EAW. Finally, we compared the response of hepatocytes isolated from mice drinking HRW or RW to palmitate overload.
RESULTS EAW had several properties important to the study: (1) pH = 11; (2) oxidation-reduction potential of -495 mV; and (3) H2 = 0.2 mg/L. However, in contrast to other studies, there were no differences between the groups drinking EAW or RW in either the RD or HFD groups. We hypothesized that the null result was due to low H2 concentrations. Therefore, we evaluated the effects of RW and low and high HRW concentrations (L-HRW = 0.3 mg H2/L and H-HRW = 0.8 mg H2/L, respectively) in mice fed an HFD. Compared to RW and L-HRW, H-HRW resulted in a lower increase in fat mass (46% vs 61%), an increase in lean body mass (42% vs 28%), and a decrease in hepatic lipid accumulation (P < 0.01). Lastly, exposure of hepatocytes isolated from mice drinking H-HRW to palmitate overload demonstrated a protective effect from H2 by reducing hepatocyte lipid accumulation in comparison to mice drinking regular water.
CONCLUSION H2 is the therapeutic agent in electrolyzed-alkaline water and attenuates HFD-induced nonalcoholic fatty liver disease in mice.
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Affiliation(s)
- Karen Jackson
- Laboratory of Human Health and Nutrition Sciences, MIGAL-Galilee Research Institute, Kyriat Shmona 11016, Israel
- Tel Hai College, Upper Galilee 12110, Israel
| | - Noa Dressler
- Laboratory of Human Health and Nutrition Sciences, MIGAL-Galilee Research Institute, Kyriat Shmona 11016, Israel
- Tel Hai College, Upper Galilee 12110, Israel
| | - Rotem S Ben-Shushan
- Laboratory of Human Health and Nutrition Sciences, MIGAL-Galilee Research Institute, Kyriat Shmona 11016, Israel
| | - Ari Meerson
- Laboratory of Human Health and Nutrition Sciences, MIGAL-Galilee Research Institute, Kyriat Shmona 11016, Israel
| | - Tyler W LeBaron
- Center of Experimental Medicine, Institute for Heart Research, Slovak Academy of Sciences, Bratislava 84005, Slovakia
- Molecular Hydrogen Institute, UT 48101, United States
| | - Snait Tamir
- Laboratory of Human Health and Nutrition Sciences, MIGAL-Galilee Research Institute, Kyriat Shmona 11016, Israel
- Tel Hai College, Upper Galilee 12110, Israel
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Tsai FJ, Ho MW, Lai CH, Chou CH, Li JP, Cheng CF, Wu YC, Liu X, Tsang H, Lin TH, Liao CC, Huang SM, Lin JC, Lin CC, Hsieh CL, Liang WM, Lin YJ. Evaluation of Oral Antiretroviral Drugs in Mice With Metabolic and Neurologic Complications. Front Pharmacol 2018; 9:1004. [PMID: 30233379 PMCID: PMC6131569 DOI: 10.3389/fphar.2018.01004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/15/2018] [Indexed: 12/30/2022] Open
Abstract
Antiretroviral (ART) drugs has previously been associated with lipodystrophic syndrome, metabolic consequences, and neuropsychiatric complications. ART drugs include three main classes of protease inhibitors (PIs), nucleoside analog reverse transcriptase inhibitors (NRTIs), and non-nucleoside reverse transcriptase inhibitors (NNRTIs). Our previous work demonstrated that a high risk of hyperlipidemia was observed in HIV-1-infected patients who received ART drugs in Taiwan. Patients receiving ART drugs containing either Abacavir/Lamivudine (Aba/Lam; NRTI/NRTI), Lamivudine/Zidovudine (Lam/Zido; NRTI/NRTI), or Lopinavir/Ritonavir (Lop/Rit; PI) have the highest risk of hyperlipidemia. The aim of this study was to investigate the effects of Aba/Lam (NRTI/NRTI), Lam/Zido (NRTI/NRTI), and Lop/Rit (PI) on metabolic and neurologic functions in mice. Groups of C57BL/6 mice were administered Aba/Lam, Lam/Zido, or Lop/Rit, orally, once daily for a period of 4 weeks. The mice were then extensively tested for metabolic and neurologic parameters. In addition, the effect of Aba/Lam, Lam/Zido, and Lop/Rit on lipid metabolism was assessed in HepG2 hepatocytes and during the 3T3-L1 preadipocyte differentiation. Administration with Aba/Lam caused cognitive and motor impairments in mice, as well as their metabolic imbalances, including alterations in leptin serum levels. Administration with Lop/Rit also caused cognitive and motor impairments in mice, as well as their metabolic imbalances, including alterations in serum levels of total cholesterol, and HDL-c. Treatment of mice with Aba/Lam and Lop/Rit enhanced the lipid accumulation in the liver, and the decrease in AMP-activated protein kinase (AMPK) phosphorylation and/or its downstream target acetyl-CoA carboxylase (ACC) protein expression. In HepG2 hepatocytes, Aba/Lam, Lam/Zido, and Lop/Rit also enhanced the lipid accumulation and decreased phosphorylated AMPK and ACC proteins. In 3T3-L1 pre-adipocyte differentiation, Aba/Lam and Lop/Rit reduced adipogenesis by decreasing expression of transcription factor CEBPb, implicating the lipodystrophic syndrome. Our results demonstrate that daily oral administration of Aba/Lam and Lop/Rit may produce cognitive, motor, and metabolic impairments in mice, regardless of HIV-1 infection.
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Affiliation(s)
- Fuu-Jen Tsai
- School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,Department of Biotechnology, Asia University, Taichung, Taiwan
| | - Mao-Wang Ho
- Section of Infectious Diseases, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chih-Ho Lai
- Department of Microbiology and Immunology, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chen-Hsing Chou
- School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Graduate Institute of Biostatistics, School of Public Health, China Medical University, Taichung, Taiwan
| | - Ju-Pi Li
- School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Rheumatism Research Center, China Medical University Hospital, Taichung, Taiwan
| | - Chi-Fung Cheng
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.,Graduate Institute of Biostatistics, School of Public Health, China Medical University, Taichung, Taiwan
| | - Yang-Chang Wu
- Graduate Institute of Natural Products and Research Center for Natural Products & Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Xiang Liu
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Hsinyi Tsang
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Ting-Hsu Lin
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Chiu-Chu Liao
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Shao-Mei Huang
- Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Jung-Chun Lin
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chih-Chien Lin
- Department of Cosmetic Science, Providence University, Taichung, Taiwan
| | - Ching-Liang Hsieh
- Graduate Institute of Integrated Medicine, School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Wen-Miin Liang
- Graduate Institute of Biostatistics, School of Public Health, China Medical University, Taichung, Taiwan
| | - Ying-Ju Lin
- School of Chinese Medicine, China Medical University, Taichung, Taiwan.,Genetic Center, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
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Wang B, Guo H, Li X, Yue L, Liu H, Zhao L, Bai H, Liu X, Wu X, Qu Y. Adiponectin Attenuates Oxygen-Glucose Deprivation-Induced Mitochondrial Oxidative Injury and Apoptosis in Hippocampal HT22 Cells via the JAK2/STAT3 Pathway. Cell Transplant 2018; 27:1731-1743. [PMID: 29947255 PMCID: PMC6300778 DOI: 10.1177/0963689718779364] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Ischemic stroke is among the leading causes of morbidity and mortality worldwide. Improving the tolerance of neurons to ischemia and reperfusion injury could be a feasible strategy against ischemia. Adiponectin (APN) is a major adipokine that regulates glucose and lipid metabolism and plays an important role in the protection of the cerebral nervous system. We aimed to investigate the effects of APN on oxygen and glucose deprivation (OGD)-induced neuronal injury in hippocampal neuronal HT22 cells. APN displayed neuroprotective effects against OGD, evidenced by increased cell viability and decreased lactate dehydrogenase release and apoptotic rate. Additionally, APN also maintained mitochondrial ultrastructure and transmembrane potential, attenuated reactive oxygen species and malondialdehyde, and increased superoxide dismutase and glutathione peroxidase activity. Moreover, APN promoted Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) phosphorylation, enhanced STAT3 nuclear translocation, increased the Bcl-2/Bax ratio, and decreased cleaved caspase-3. The aforementioned APN-induced effects were almost reversed by a JAK2 inhibitor, AG490. APN may attenuate OGD-induced hippocampal HT22 neuronal impairment by protecting cells against mitochondrial oxidative stress and apoptosis, mediated by JAK2/STAT3 signaling.
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Affiliation(s)
- Bodong Wang
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China.,2 Department of Neurosurgery, General Hospital of Jinan Military Command, Jinan, Shandong, China
| | - Hao Guo
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xia Li
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Liang Yue
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China.,3 Department of Neurosurgery, Xi'an Aerospace General Hospital, Xi'an, China
| | - Haixiao Liu
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Lei Zhao
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Hao Bai
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xunyuan Liu
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xun Wu
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yan Qu
- 1 Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
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23
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Ethemoglu O, Ay H, Koyuncu I, Gönel A. Comparison of cytokines and prooxidants/antioxidants markers among adults with refractory versus well-controlled epilepsy: A cross-sectional study. Seizure 2018; 60:105-109. [PMID: 29935409 DOI: 10.1016/j.seizure.2018.06.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/04/2018] [Accepted: 06/11/2018] [Indexed: 12/17/2022] Open
Abstract
PURPOSE This study aims to investigate the serum adiponectin, interleukin (IL)-6 and oxidative stress in epilepsy patients who are refractory or non-refractory to treatments. METHOD The study comprised 31 refractory epilepsy, 29 well-controlled epilepsy patients and control group including 29 healthy individuals. The serum adiponectin, IL-6, total antioxidant status (TAS), total oxidant status levels (TOS) and oxidative stress index (OSİ) were determined. RESULTS The mean serum adiponectin and TAS levels were significantly lower in the refractory epilepsy patients than in the healty controls, and mean IL-6, TOS and OSİ levels were significantly higher. The serum adiponectin, IL-6, TAS, TOS and OSI levels were not significantly different between the well-controlled epilepsy patients and the healthy controls. CONCLUSIONS The mean serum IL-6 and oxidative stress levels in refractory epilepsy patients were higher and the serum adiponectin level was lower than the healthy control group. These findings may be associated with an increased risk of seizures, atherosclerosis and cardiovascular disease in refractory epilepsy patients.
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Affiliation(s)
- Ozlem Ethemoglu
- Harran University School of Medicine, Department of Neurology, Şanlıurfa, Turkey.
| | - Halil Ay
- Harran University School of Medicine, Department of Neurology, Şanlıurfa, Turkey
| | - Ismail Koyuncu
- Harran University School of Medicine, Department of Biochemistry and Clinical Biochemistry, Şanlıurfa, Turkey
| | - Ataman Gönel
- Harran University School of Medicine, Department of Biochemistry and Clinical Biochemistry, Şanlıurfa, Turkey
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24
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Meadows KL. Ischemic stroke and select adipose-derived and sex hormones: a review. Hormones (Athens) 2018; 17:167-182. [PMID: 29876798 DOI: 10.1007/s42000-018-0034-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 04/27/2018] [Indexed: 02/03/2023]
Abstract
Ischemic stroke is the fifth leading cause of death in the USA and is the leading cause of serious, long-term disability worldwide. The principle sex hormones (estrogen, progesterone, and testosterone), both endogenous and exogenous, have profound effects on various stroke outcomes and have become the focus of a number of studies evaluating risk factors and treatment options for ischemic stroke. In addition, the expression of other hormones that may influence stroke outcome, including select adipose-derived hormones (adiponectin, leptin, and ghrelin), can be regulated by sex hormones and are also the focus of several ischemic stroke studies. This review aims to summarize some of the preclinical and clinical studies investigating the principle sex hormones, as well as select adipose-derived hormones, as risk factors or potential treatments for ischemic stroke. In addition, the potential for relaxin, a lesser studied sex hormone, as a novel treatment option for ischemic stroke is explored.
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Affiliation(s)
- Kristy L Meadows
- Cummings School of Veterinary Medicine, Tufts University, 200 Westboro Rd., North Grafton, MA, 01536, USA.
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25
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Xu N, Zhang Y, Doycheva DM, Ding Y, Zhang Y, Tang J, Guo H, Zhang JH. Adiponectin attenuates neuronal apoptosis induced by hypoxia-ischemia via the activation of AdipoR1/APPL1/LKB1/AMPK pathway in neonatal rats. Neuropharmacology 2018; 133:415-428. [PMID: 29486166 DOI: 10.1016/j.neuropharm.2018.02.024] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 02/15/2018] [Accepted: 02/23/2018] [Indexed: 02/03/2023]
Abstract
Adiponectin is an important adipocyte-derived plasma protein that has beneficial effects on cardio- and cerebrovascular diseases. A low level of plasma Adiponectin is associated with increased mortality post ischemic stroke; however, little is known about the causal role of Adiponectin as well as its molecular mechanisms in neonatal hypoxia ischemia (HI). In the present study, ten-day-old rat pups were subjected to right common carotid artery ligation followed by 2.5 h hypoxia. Recombinant human Adiponectin (rh-Adiponectin) was administered intranasally 1 h post HI. Adiponectin Receptor 1 (AdipoR1) siRNA, APPL1 siRNA, LKB1 siRNA were administered through intracerebroventricular injection 48 h before HI. Brain infarct area measurement, neurological function test, western blot, Fluoro Jade C (FJC), TUNEL, and immunofluorescence staining were conducted. Results revealed that endogenous Adiponectin, AdipoR1 and APPL1 were increased in a time dependent manner after HI. Administration of rh-Adiponectin reduced brain infarct area, neuronal apoptosis, brain atrophy and improved neurological function at 24 h and 4 weeks post HI. Furthermore, rh-Adiponectin treatment increased Adiponectin, AdipoR1, APPL1, cytosolic LKB1, p-AMPK expression levels and thereby attenuated apoptosis as shown by the decreased expression of the pro-apoptotic marker, Cleaved Caspase 3 (C-Cas3), as well as the number of FJC and TUNEL positively stained neurons. AdipoR1, APPL1 and LKB1 siRNAs abolished the anti-apoptotic effects of rh-Adiponectin at 24 h after HI. Collectively, the data provided evidence that intranasal administration of rh-Adiponectin attenuated neuronal apoptosis at least in part via activating AdipoR1/APPL1/LKB1/AMPK signaling pathway. Adiponectin could represent a therapeutic target for treatment of neonatal hypoxic ischemic encephalopathy.
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MESH Headings
- AMP-Activated Protein Kinase Kinases
- Adaptor Proteins, Signal Transducing/genetics
- Adaptor Proteins, Signal Transducing/metabolism
- Adiponectin/therapeutic use
- Animals
- Animals, Newborn
- Apoptosis/drug effects
- Body Weight/drug effects
- Brain Infarction/drug therapy
- Brain Infarction/etiology
- Caspase 3/metabolism
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Escape Reaction/drug effects
- Female
- Fluoresceins/metabolism
- Gene Expression Regulation/drug effects
- Gene Expression Regulation/genetics
- Hypoxia-Ischemia, Brain/drug therapy
- Hypoxia-Ischemia, Brain/pathology
- In Situ Nick-End Labeling
- Male
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Neurologic Examination
- Neurons/drug effects
- Protein Kinases/genetics
- Protein Kinases/metabolism
- Protein Serine-Threonine Kinases/genetics
- Protein Serine-Threonine Kinases/metabolism
- RNA, Small Interfering/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptors, Adiponectin/genetics
- Receptors, Adiponectin/metabolism
- Reflex/drug effects
- Signal Transduction/drug effects
- Signal Transduction/genetics
- Statistics, Nonparametric
- Swimming/physiology
- Time Factors
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Affiliation(s)
- Ningbo Xu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China; Department of Physiology and Pharmacology, Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Yixin Zhang
- Department of Physiology and Pharmacology, Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Desislava Met Doycheva
- Department of Physiology and Pharmacology, Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Yan Ding
- Department of Physiology and Pharmacology, Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Yiting Zhang
- Department of Physiology and Pharmacology, Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA
| | - Hongbo Guo
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
| | - John H Zhang
- Department of Physiology and Pharmacology, Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA; Department of Anesthesiology, Neurosurgery and Neurology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA.
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26
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Li D, Song LL, Wang J, Meng C, Cui XG. Adiponectin protects against lung ischemia-reperfusion injury in rats with type 2 diabetes mellitus. Mol Med Rep 2018; 17:7191-7201. [PMID: 29568898 PMCID: PMC5928677 DOI: 10.3892/mmr.2018.8748] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 12/14/2017] [Indexed: 11/06/2022] Open
Abstract
Adiponectin (APN) has been associated with the pathogenesis of acute brain, liver and heart injury. However, the role of APN in lung ischemia-reperfusion injury (LIRI) in diabetes mellitus remains unclear. To investigate this, the present study evaluated the effects of APN on lung dysfunction and pathological alterations in rats with type 2 diabetes mellitus via lung ischemia/reperfusion (I/R). The lung‑protective effects of APN globular domain (gAPN) in rats with type 2 diabetes mellitus were also investigated by measuring the oxygenation index, inflammatory cytokines, lung edema, histopathology, oxidative stress, apoptosis and the protein expression levels of phosphorylated 5'adenosine monophosphate‑activated protein kinase (p‑AMPK), endothelial nitric oxide synthase (eNOS) and inducible nitric oxide synthase (iNOS). The results of the present study demonstrated that the diabetes mellitus rats + I/R (DIR) group exhibited greater concentrations of tumor necrosis factor‑α and interleukin‑6, and increases in the wet‑weight to dry‑weight ratio, lung injury score, oxidative stress and cellular apoptosis. These effects were accompanied by lower pulmonary oxygenation compared with the normal rat + I/R (NIR) group (P<0.05). Additionally, all of these alterations were attenuated in the NIR + gAPN and DIR + gAPN groups compared with in the NIR and DIR groups, respectively. In the DIR group, the expression levels of p‑AMPK/AMPK and eNOS were significantly downregulated, and the levels of iNOS were upregulated, compared with those of the NIR group. Treatment with APN activated AMPK, increased eNOS expression and attenuated iNOS expression. The results of the present study demonstrated that APN exerted protective effects against LIRI via its anti‑inflammatory, antioxidative stress and anti‑apoptotic activities. These protective effects of APN were eliminated in rats with type 2 diabetes mellitus, in which LIRI was exacerbated. The present study indicated that APN may be a potential therapeutic agent for LIRI in type 2 diabetes mellitus.
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Affiliation(s)
- Di Li
- Department of Anesthesiology, The Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Lin-Lin Song
- Department of Anesthesiology, The Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Juan Wang
- Department of Anesthesiology, The Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Chao Meng
- Department of Anesthesiology, The Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Xiao-Guang Cui
- Department of Anesthesiology, The Heilongjiang Province Key Laboratory of Research on Anesthesiology and Critical Care Medicine, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
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27
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Jin Y, Wei F, Dai X, Qi M, Ma Y. Anti-inflammatory effect of 4-methylcyclopentadecanone in rats submitted to ischemic stroke. Fundam Clin Pharmacol 2018; 32:270-278. [PMID: 29344983 DOI: 10.1111/fcp.12348] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 12/31/2017] [Accepted: 01/11/2018] [Indexed: 12/22/2022]
Abstract
This study aimed to investigate the anti-inflammatory effect of 4-methylcyclopentadecanone (4-MCPC) in rats suffering from a cerebral ischemia/reperfusion (I/R) injury. In this study, the focal cerebral ischemia in rats was induced by middle cerebral artery occlusion (MCAO) for 2 h, and the rats were treated with 4-MCPC (8 mg/kg) just 0.5 h before reperfusion. The ischemic infarct volume was recorded 24 h after the MCAO. In addition, myeloperoxidase (MPO) activity and TNF-α and IL-1β levels in the ischemic cerebral cortex were determined by ELISA, while nuclear translocation of NF-κB p65 subunit and expression of p-IκBα were investigated by Western blotting. Our results showed that 4-MCPC treatment decreased infarct volume significantly, compared with I/R group (16.8%±7.5% vs. 39.7%±10.9%); it reduced MPO activity (0.43 ± 0.10 vs. 1.00 ± 0.51 U/g) and expression levels of TNF-α (18.90 ± 3.65 vs. 35.87 ± 4.87 ng/g) and IL-1β (1.68 ± 0.23 vs. 2.67 ± 0.38 ng/g) in ischemic brain tissues of rats. Further study revealed that 4-MCPC treatment markedly reduced nuclear translocation of NF-κB p65 subunit and expression of p-IκBα in ischemic cerebral cortex. Taken together, our results suggest that 4-MCPC protects against cerebral I/R injury and displays anti-inflammatory actions through inhibition of the NF-κB signal pathway.
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Affiliation(s)
- Yan Jin
- Shandong Provincial Key Laboratory of Chemical Drugs, Shandong Academy of Pharmaceutical Sciences, 250101, Jinan, China.,Shandong Freda Pharmaceutical Group Co., Ltd., 250101, Jinan, China
| | - Fang Wei
- Weifang People's Hospital, 261000, Weifang, China
| | - Xiaoli Dai
- Shandong Provincial Key Laboratory of Chemical Drugs, Shandong Academy of Pharmaceutical Sciences, 250101, Jinan, China
| | - Min Qi
- Shandong Provincial Key Laboratory of Chemical Drugs, Shandong Academy of Pharmaceutical Sciences, 250101, Jinan, China
| | - Yukui Ma
- Shandong Provincial Key Laboratory of Chemical Drugs, Shandong Academy of Pharmaceutical Sciences, 250101, Jinan, China
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28
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Cezaretto A, Suemoto CK, Bensenor I, Lotufo PA, de Almeida-Pititto B, Ferreira SRG. Association of adiponectin with cognitive function precedes overt diabetes in the Brazilian Longitudinal Study of Adult Health: ELSA. Diabetol Metab Syndr 2018; 10:54. [PMID: 30002734 PMCID: PMC6038247 DOI: 10.1186/s13098-018-0354-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 06/28/2018] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Adiponectin is an insulin-sensitizer adipocytokine endowed with neuroprotective actions. Whether adiponectin regulates neuronal functioning toward delaying cognitive decline independently of the glucose metabolism disturbance has been poorly explored. This study evaluated if the performance in cognitive tests was associated with adiponectin levels prior the development of type 2 diabetes in middle-aged individuals. METHODS A sample of 938 non-diabetic participants of ELSA had their cognitive function assessed by the CERAD delayed word recall test, the verbal fluency test and the trail making test. Stepwise multiple linear regression using forward selection had the response to cognitive tests as the dependent variable and adiponectin as the independent variable of main interest, adjusted for glucose tolerance status and confounders. RESULTS Mean age was 45.7 ± 4.9 years, 54.5% were women, 43.0% had high education level, 59.3% weight excess and 70.0% prediabetes. In crude model, only the delayed recall memory was associated with adiponectin levels. In an initial regression model, delayed recall memory remained independently associated with adiponectin levels and prediabetes. After complete adjustments, adiponectin but not prediabetes maintained independently associated with delayed recall memory (β 0.067; 95% CI 0.006-0.234; p = 0.040). On the other hand, learning memory showed to be associated with prediabetes (β 0.71 95% CI 0.17; 1.24; p = 0.009) but not with adiponectin. CONCLUSIONS The association of memory with adiponectin in middle-aged individuals, prior overt diabetes, suggests that this adipocytokine could anticipate cognitive impairmentρ detection, when preventive strategies could be more effectively implemented. The usefulness of adiponectin to identify increased risk for cognitive dysfunction before advanced age needs to be prospectively investigated in ELSA cohort.
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Affiliation(s)
- Adriana Cezaretto
- Department of Epidemiology, School of Public Health, University of Sao Paulo, São Paulo, Brazil
| | | | - Isabela Bensenor
- Department of Internal Medicine, Medical School, University of Sao Paulo, São Paulo, Brazil
| | - Paulo A. Lotufo
- Department of Internal Medicine, Medical School, University of Sao Paulo, São Paulo, Brazil
| | | | - Sandra R. G. Ferreira
- Department of Epidemiology, School of Public Health, University of Sao Paulo, São Paulo, Brazil
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29
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Miranda-Martínez A, Mercado-Gómez OF, Arriaga-Ávila V, Guevara-Guzmán R. Distribution of Adiponectin Receptors 1 and 2 in the Rat Olfactory Bulb and the Effect of Adiponectin Injection on Insulin Receptor Expression. Int J Endocrinol 2017; 2017:4892609. [PMID: 29463982 PMCID: PMC5804105 DOI: 10.1155/2017/4892609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 11/08/2017] [Accepted: 11/14/2017] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Adiponectin (APN) is an adipocyte-derived hormone that has peripheral beneficial effects. Although its receptors AdipoR1 and AdipoR2 are expressed in the brain, their function in neurons is poorly understood. The aims of this work were to describe the distribution of APN receptors in the olfactory bulb (OB) as well as the possible effects of APN injection on the insulin receptor (InsR) content and Akt kinase. METHOD We performed the double immunofluorescence technique to describe the distribution of AdipoRs and the cellular type they were expressing. mRNA transcript and protein content were assessed by RT-PCR and Western blot, respectively. APN injection was performed to analyze its possible effect on the insulin pathway. RESULTS We found that AdipoRs were localized in all cell layers and in both neurons and astrocytes. We observed the presence of mRNA transcripts and immunoblot analysis confirmed the protein on the intact OB; APN injection in the OB resulted in a slight decrease of the total InsR and Akt phosphorylation and a reduction of phopho-InsR content. CONCLUSIONS These data demonstrated that AdipoRs are expressed in OB regions, and APN injection could act as an insulin pathway modulator in the OB and thus possibly contribute to olfaction physiology.
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Affiliation(s)
- Alfredo Miranda-Martínez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, Mexico
- Programa de Doctorado en Ciencias Biológicas, Coordinación del Posgrado en Ciencias Biológicas, Edificio B, 1° Piso. Circuito de Posgrados, Ciudad Universitaria, Del. Coyoacán, 04510 Ciudad de México, Mexico
| | - Octavio Fabián Mercado-Gómez
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, Mexico
| | - Virginia Arriaga-Ávila
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, Mexico
| | - Rosalinda Guevara-Guzmán
- Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Del. Coyoacán, 04510 Ciudad de México, Mexico
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Xu H, Liu W, Liu T, Su N, Guo C, Feng X, Dou F, Ding Y, Shi L, Wen A. Synergistic neuroprotective effects of Danshensu and hydroxysafflor yellow A on cerebral ischemia-reperfusion injury in rats. Oncotarget 2017; 8:115434-115443. [PMID: 29383171 PMCID: PMC5777783 DOI: 10.18632/oncotarget.23272] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 12/05/2017] [Indexed: 02/01/2023] Open
Abstract
Ischemic stroke is a common cerebrovascular disease with substantial morbidity and mortality worldwide. However, therapeutic options to minimize the cerebral ischemia-reperfusion (I/R) injury are limited. In China, combination of herb Danshen (Salvia miltiorrhiza Bge) and Honghua (Carthamus tinctorius L.) is effective for stroke treatment in patients but its underlying mechanism requires further investigation. Our study was conducted to evaluate and explore the synergistic effects of two herb ingredients Danshensu and hydroxysafflor yellow A (HSYA) on cerebral ischemia-reperfusion (I/R) injury in rats. Rats were randomly assigned to the following five groups: sham group, model group, Danshensu group, HSYA group, and Danshensu+HSYA group. Under our experimental conditions in vitro, oxygen-glucose deprivation (OGD) model was established to determine the synergistic neuroprotective effects of Danshensu and HSYA. With such methods as neurological deficits scoring, TTC, HE and TUNEL staining, and ELISA detection, the results demonstrated that administration of either Danshensu or HSYA improved neurological defects and alleviated pro-inflammatory and oxidative stress reactions. Notably, combination of Danshensu and HSYA exerted more effective results than that used alone. Furthermore, western blot analysis results showed that Danshensu and HSYA combination displayed synergistic regulation on TLR4/NF-κB and Nrf2/HO-1 pathways. Consistently, Danshensu +HSYA group exhibits better neuroprotection in primary neurons with OGD model compared with Danshensu or HSYA group. Taken together, we found for the first time that Danshensu plus HSYA could achieve remarkable synergistic neuroprotective effects on I/R injury, which is related to the anti-inflammatory and antioxidant pathways.
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Affiliation(s)
- Hang Xu
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - WenXing Liu
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - TianLong Liu
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Ning Su
- Department of Radiation Oncology, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Chao Guo
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - XiaoNa Feng
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Fang Dou
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
| | - Yi Ding
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China.,Department of Pharmacy, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China
| | - Lei Shi
- Department of Pharmacy, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China
| | - AiDong Wen
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
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Li X, Guo H, Zhao L, Wang B, Liu H, Yue L, Bai H, Jiang H, Gao L, Feng D, Qu Y. Adiponectin attenuates NADPH oxidase-mediated oxidative stress and neuronal damage induced by cerebral ischemia-reperfusion injury. Biochim Biophys Acta Mol Basis Dis 2017; 1863:3265-3276. [DOI: 10.1016/j.bbadis.2017.08.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/12/2017] [Accepted: 08/09/2017] [Indexed: 10/19/2022]
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Guo C, Ma Y, Ma S, Mu F, Deng J, Duan J, Xiong L, Yin Y, Wang Y, Xi M, Wen A. The Role of TRPC6 in the Neuroprotection of Calycosin Against Cerebral Ischemic Injury. Sci Rep 2017; 7:3039. [PMID: 28596571 PMCID: PMC5465205 DOI: 10.1038/s41598-017-03404-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/27/2017] [Indexed: 12/03/2022] Open
Abstract
Our previous studies have provided evidences that calycosin can protect the brain from ischemia/reperfusion injury, but its mechanisms is not fully understand. Transient receptor potential canonical 6 (TRPC6) has a critical role in promoting neuronal survival against cerebral ischemic injury. The aim of the present study is to test whether calycosin protects against cerebral ischemic injury through TRPC6-CREB pathway. In vivo, rats were subjected to transient middle cerebral artery occlusion (MCAO) for 2 h and then treated with different doses of calycosin at the onset of reperfusion. In vitro, primary cultured neurons were treated by calycosin, then exposed to 2 h oxygen glucose deprivation (OGD) followed by 24 h reoxygenation. Our results showed that treatment with calycosin protected against ischemia-induced damages by increasing TRPC6 and P-CREB expression and inhibiting calpain activation. The neuroprotection effect of calycosin was diminished by inhibition or knockdown of TRPC6 and CREB. These findings indicated that the potential neuroprotection mechanism of calycosin was involved with TRPC6-CREB pathway.
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Affiliation(s)
- Chao Guo
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Yongyuan Ma
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, PR China
| | - Shanbo Ma
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Fei Mu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Jiao Deng
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, PR China
| | - Jialin Duan
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Lize Xiong
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, PR China
| | - Ying Yin
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Yanhua Wang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China
| | - Miaomaio Xi
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China.
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, P.R. China.
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Gairolla J, Kler R, Modi M, Khurana D. Leptin and adiponectin: pathophysiological role and possible therapeutic target of inflammation in ischemic stroke. Rev Neurosci 2017; 28:295-306. [DOI: 10.1515/revneuro-2016-0055] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 11/30/2016] [Indexed: 11/15/2022]
Abstract
AbstractStroke is a multifactorial disease contributing to significant noncommunicable disease burden in developing countries. Risk of stroke is largely a consequence of morbidities of diabetes, obesity, hypertension, and heart diseases. Incidence of stroke is directly proportional to body mass index. Adipose tissue stores energy as well as acts as an active endocrine organ, which secretes numerous humoral factors. Adiponectin and leptin are the commonest adipocytokines and have been invariably linked to the development of coronary heart disease and may be involved in the underlying biological mechanism of stroke. Leptin and adiponectin mediate proatherogenic and antiatherogenic responses, respectively, and hence, determining the plasma or serum levels of leptin and adiponectin alone or in combination may act as a novel prognostic biomarker for inflammation and atherosclerosis in stroke. This review addresses leptin- and adiponectin-mediated inflammatory mechanism in ischemic stroke and their potential as therapeutic targets.
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Affiliation(s)
- Jitender Gairolla
- 1Department of Neurology, Postgraduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Rupinder Kler
- 1Department of Neurology, Postgraduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Manish Modi
- 1Department of Neurology, Postgraduate Institute of Medical Education & Research, Chandigarh 160012, India
| | - Dheeraj Khurana
- 1Department of Neurology, Postgraduate Institute of Medical Education & Research, Chandigarh 160012, India
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Chung MM, Nicol CJ, Cheng YC, Lin KH, Chen YL, Pei D, Lin CH, Shih YN, Yen CH, Chen SJ, Huang RN, Chiang MC. Metformin activation of AMPK suppresses AGE-induced inflammatory response in hNSCs. Exp Cell Res 2017; 352:75-83. [PMID: 28159472 DOI: 10.1016/j.yexcr.2017.01.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 01/09/2017] [Accepted: 01/29/2017] [Indexed: 12/16/2022]
Abstract
A growing body of evidence suggests type 2 diabetes mellitus (T2DM) is linked to neurodegenerative diseases such as Alzheimer's disease (AD). Although the precise mechanisms remain unclear, T2DM may exacerbate neurodegenerative processes. AMP-activated protein kinase (AMPK) signaling is an evolutionary preserved pathway that is important during homeostatic energy biogenesis responses at both the cellular and whole-body levels. Metformin, a ubiquitously prescribed anti-diabetic drug, exerts its effects by AMPK activation. However, while the roles of AMPK as a metabolic mediator are generally well understood, its performance in neuroprotection and neurodegeneration are not yet well defined. Given hyperglycemia is accompanied by an accelerated rate of advanced glycosylation end product (AGE) formation, which is associated with the pathogenesis of diabetic neuronal impairment and, inflammatory response, clarification of the role of AMPK signaling in these processes is needed. Therefore, we tested the hypothesis that metformin, an AMPK activator, protects against diabetic AGE induced neuronal impairment in human neural stem cells (hNSCs). In the present study, hNSCs exposed to AGE had significantly reduced cell viability, which correlated with elevated inflammatory cytokine expression, such as IL-1α, IL-1β, IL-2, IL-6, IL-12 and TNF-α. Co-treatment with metformin significantly abrogated the AGE-mediated effects in hNSCs. In addition, metformin rescued the transcript and protein expression levels of acetyl-CoA carboxylase (ACC) and inhibitory kappa B kinase (IKK) in AGE-treated hNSCs. NF-κB is a transcription factor with a key role in the expression of a variety of genes involved in inflammatory responses, and metformin did prevent the AGE-mediated increase in NF-κB mRNA and protein levels in the hNSCs exposed to AGE. Indeed, co-treatment with metformin significantly restored inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) levels in AGE-treated hNSCs. These findings extend our understanding of the central role of AMPK in AGE induced inflammatory responses, which increase the risk of neurodegeneration in diabetic patients.
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Affiliation(s)
- Ming-Min Chung
- Department of Internal Medicine, Cardinal Tien Hospital, College of Medicine, Fu-Jen Catholic University, New Taipei City 242, Taiwan
| | - Christopher J Nicol
- Departments of Pathology & Molecular Medicine and Biomedical & Molecular Sciences, and Division of Cancer Biology & Genetics, Cancer Research Institute, Queen's University, Kingston, Ontario, Canada
| | - Yi-Chuan Cheng
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Tao Yuan 333, Taiwan
| | - Kuan-Hung Lin
- Graduate Institute of Biotechnology, Chinese Culture University, Taipei 111, Taiwan
| | - Yen-Lin Chen
- Department of Pathology, Cardinal Tien Hospital, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan
| | - Dee Pei
- Department of Internal Medicine, Cardinal Tien Hospital, College of Medicine, Fu-Jen Catholic University, New Taipei City 242, Taiwan
| | - Chien-Hung Lin
- Department of Pediatrics, Taipei City Hospital Zhongxing Branch, Taipei 103, Taiwan
| | - Yi-Nuo Shih
- Department of Occupational Therapy, College of Medicine, Fu-Jen Catholic University, New Taipei City 242, Taiwan
| | - Chia-Hui Yen
- Department of International Business, Ming Chuan University, Taipei 111, Taiwan
| | - Shiang-Jiuun Chen
- Department of Life Science and Institute of Ecology and Evolutionary Biology, College of Life Science, National Taiwan University, Taipei 106, Taiwan
| | - Rong-Nan Huang
- Department of Entomology and Research Center for Plant-Medicine, National Taiwan University, Taipei 106, Taiwan
| | - Ming-Chang Chiang
- Department of Life Science, College of Science and Engineering, Fu Jen Catholic University, New Taipei City 242, Taiwan.
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Haley MJ, Lawrence CB. Obesity and stroke: Can we translate from rodents to patients? J Cereb Blood Flow Metab 2016; 36:2007-2021. [PMID: 27655337 PMCID: PMC5134197 DOI: 10.1177/0271678x16670411] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 08/04/2016] [Accepted: 08/09/2016] [Indexed: 12/15/2022]
Abstract
Obesity is a risk factor for stroke and is consequently one of the most common co-morbidities found in patients. There is therefore an identified need to model co-morbidities preclinically to allow better translation from bench to bedside. In preclinical studies, both diet-induced and genetically obese rodents have worse stroke outcome, characterised by increased ischaemic damage and an altered inflammatory response. However, clinical studies have reported an 'obesity paradox' in stroke, characterised by reduced mortality and morbidity in obese patients. We discuss the potential reasons why the preclinical and clinical studies may not agree, and review the mechanisms identified in preclinical studies through which obesity may affects stroke outcome. We suggest inflammation plays a central role in this relationship, as obesity features increases in inflammatory mediators such as C-reactive protein and interleukin-6, and chronic inflammation has been linked to worse stroke risk and outcome.
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Affiliation(s)
- Michael J Haley
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Catherine B Lawrence
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
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36
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Zhao W, Wu C, Li S, Chen X. Adiponectin protects palmitic acid induced endothelial inflammation and insulin resistance via regulating ROS/IKKβ pathways. Cytokine 2016; 88:167-176. [DOI: 10.1016/j.cyto.2016.09.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/07/2016] [Accepted: 09/07/2016] [Indexed: 12/24/2022]
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Zhan J, Qin W, Zhang Y, Jiang J, Ma H, Li Q, Luo Y. Upregulation of neuronal zinc finger protein A20 expression is required for electroacupuncture to attenuate the cerebral inflammatory injury mediated by the nuclear factor-kB signaling pathway in cerebral ischemia/reperfusion rats. J Neuroinflammation 2016; 13:258. [PMID: 27716383 PMCID: PMC5048665 DOI: 10.1186/s12974-016-0731-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/23/2016] [Indexed: 02/16/2023] Open
Abstract
Background Zinc finger protein A20 (tumor necrosis factor alpha-induced protein 3) functions as a potent negative feedback inhibitor of the nuclear factor-kB (NF-kB) signaling. It exerts these effects by interrupting the activation of IkB kinase beta (IKKβ), the most critical kinase in upstream of NF-kB, and thereby controlling inflammatory homeostasis. We reported previously that electroacupuncture (EA) could effectively suppress IKKβ activation. However, the mechanism underlying these effects was unclear. Therefore, the current study further explored the effects of EA on A20 expression in rat brain and investigated the possible mechanism of A20 in anti-neuroinflammation mediated by EA using transient middle cerebral artery occlusion (MCAO) rats. Methods Rats were treated with EA at the “Baihui (GV20),” “Hegu (L14),” and “Taichong (Liv3)” acupoints once a day starting 2 h after focal cerebral ischemia. The spatiotemporal expression of A20, neurobehavioral scores, infarction volumes, cytokine levels, glial cell activation, and the NF-kB signaling were assessed at the indicated time points. A20 gene interference (overexpression and silencing) was used to investigate the role of A20 in mediating the neuroprotective effects of EA and in regulating the interaction between neuronal and glial cells by suppressing neuronal NF-kB signaling during cerebral ischemia/reperfusion-induced neuroinflammation. Results EA treatment increased A20 expression with an earlier peak and longer lasting upregulation. The upregulated A20 protein was predominantly located in neurons in the cortical zone of the ischemia/reperfusion. Furthermore, neuronal A20 cell counts were positively correlated with neurobehavioral scores but negatively correlated with infarct volume, the accumulation of pro-inflammatory cytokines, and glial cell activation. Moreover, the effects of EA on improving the neurological outcome and suppressing neuroinflammation in the brain were reversed by A20 silencing. Finally, A20 silencing also suppressed the ability of EA to inhibit neuronal NF-kB signaling pathway. Conclusions Ischemia/reperfusion cortical neurons in MCAO rats are the main cell types that express A20, and there is a correlation between A20 expression and the suppression of neuroinflammation and the resulting neuroprotective effects. EA upregulated neuronal A20 expression, which played an essential role in the anti-inflammatory effects of EA by suppressing the neuronal NF-kB signaling pathway in the brains of MCAO rats.
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Affiliation(s)
- Jian Zhan
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Chongqing Key Laboratory of Neurology, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China.,Department of Neurology, The Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou Province, 563000, China
| | - Wenyi Qin
- Department of Integrated Chinese and Western Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ying Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Chongqing Key Laboratory of Neurology, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Jing Jiang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Chongqing Key Laboratory of Neurology, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Hongmei Ma
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Chongqing Key Laboratory of Neurology, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Qiongli Li
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.,Chongqing Key Laboratory of Neurology, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China
| | - Yong Luo
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China. .,Chongqing Key Laboratory of Neurology, 1 Youyi Road, Yuzhong District, Chongqing, 400016, China.
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Zhu L, Ye T, Tang Q, Wang Y, Wu X, Li H, Jiang Y. Exercise Preconditioning Regulates the Toll-Like Receptor 4/Nuclear Factor-κB Signaling Pathway and Reduces Cerebral Ischemia/Reperfusion Inflammatory Injury: A Study in Rats. J Stroke Cerebrovasc Dis 2016; 25:2770-2779. [PMID: 27590301 DOI: 10.1016/j.jstrokecerebrovasdis.2016.07.033] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/07/2016] [Accepted: 07/22/2016] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE To explore the influence of exercise preconditioning (EP) on the activity of the toll-like receptor (TLR)4/nuclear factor (NF)-κB signaling pathway in a rat model of cerebral ischemia/reperfusion (I/R) inflammatory injury. METHODS Ischemia was induced in rats using transient middle cerebral artery occlusion (tMCAO) after 3 weeks of EP. Fifty-four rats were divided into sham, MCAO, and EP+MCAO groups. Following the induction of cerebral I/R injury, rats were scored for neurological deficits. Various techniques were used to evaluate ischemic infarct volume and explore pathological changes in tissue morphology after cerebral I/R injury, wherein the levels of TLR4 and NF-κB were analyzed. In addition, enzyme-linked immunosorbent assays were used to detect the levels of tumor necrosis factor (TNF)-α and interleukin (IL)-1β in peripheral serum. RESULTS Twenty-four hours after cerebral I/R injury, the neurological deficit scores decreased and ischemic cortical damage alleviated in EP+MCAO group; the number of TLR4- and NF-κB-positive cells, the expression of TLR4 and NF-κB in the ischemic side, and the concentrations of TNF-α and IL-1β in the peripheral serum were lower in EP+MCAO group than those in the MCAO group (P <.05). CONCLUSIONS The present study indicates that EP can improve cerebral I/R-induced neurological deficits in rats, reduce infarct volume, mitigate pathological damage in the ischemic cortex, and exert neuroprotective effects. The mechanism underlying these effects might involve the regulation of the TLR4/NF-κB signaling pathway and the inhibition of central and peripheral inflammatory cascades during cerebral I/R injury.
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Affiliation(s)
- Luwen Zhu
- Rehabilitation Center, Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Tao Ye
- Graduate School, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Qiang Tang
- Rehabilitation Center, Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China.
| | - Yan Wang
- Rehabilitation Center, Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Xiaojun Wu
- Graduate School, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Hongyu Li
- Graduate School, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yunfei Jiang
- Graduate School, Heilongjiang University of Chinese Medicine, Harbin, China
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Zhang B, Song C, Feng B, Fan W. Neuroprotection by triptolide against cerebral ischemia/reperfusion injury through the inhibition of NF-κB/PUMA signal in rats. Ther Clin Risk Manag 2016; 12:817-24. [PMID: 27307742 PMCID: PMC4888863 DOI: 10.2147/tcrm.s106012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Triptolide, an active compound extracted from the Chinese herb thunder god vine (Tripterygium wilfordii Hook F.), has potent antitumor activity. Recently, triptolide was found to have protective effects against acute cerebral ischemia/reperfusion (I/R) injury through inhibition of cell apoptosis. However, the regulatory mechanism of the effect remains unclear. We hypothesize that the regulatory mechanisms of triptolide are mediated by nuclear factor κB (NF-κB) and p53-upregulated-modulator-of-apoptosis signal inhibition. To verify this hypothesis, we occluded the middle cerebral artery in male rats to establish focal cerebral I/R model. The rats received triptolide or vehicle at the onset of reperfusion following middle cerebral artery occlusion. At 24 hours after reperfusion, neurological deficits, infarct volume, and cell apoptosis were evaluated. The expression levels of NF-κBp65, PUMA, and caspase-3 were determined by Western blot. Real-time polymerase chain reaction was used to determine the levels of NF-κBp65 mRNA, PUMA mRNA, and caspase-3 mRNA. NF-κB activity was determined by electrophoretic mobility shift assay. Apoptotic cells were detected using terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL) staining. In I/R group, neurological deficit scores, cerebral infarct volume, expression of NF-κBp65, PUMA, caspase-3, NF-κB activity, and TUNEL-positive cells were found to be increased at 24 hours after I/R injury. The I/R/triptolide rats showed significantly better neurological deficit scores, decreased neural apoptosis, and reduced cerebral infarct volume. In addition, the expression of NF-κBp65, PUMA, caspase-3, and NF-κB activity was suppressed in the I/R/triptolide rats. These results indicate that the neuroprotective effects of triptolide during acute cerebral I/R injury are possibly related to the inhibition of apoptosis through suppression of NF-κB/PUMA signaling pathway.
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Affiliation(s)
- Bin Zhang
- Department of Neurology, The Third Hospital of Liaocheng, Liaocheng, Shandong, People's Republic of China
| | - Cunfeng Song
- Department of Neurology, The Third Hospital of Liaocheng, Liaocheng, Shandong, People's Republic of China
| | - Bo Feng
- Department of Neurology, The Third Hospital of Liaocheng, Liaocheng, Shandong, People's Republic of China
| | - Weibing Fan
- Department of Neurology, The Third Hospital of Changsha, Changsha, Hunan, People's Republic of China
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40
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Azab SF, Abdalhady MA, Almalky MAA, Amin EK, Sarhan DT, Elhindawy EM, Allah MAN, Elhewala AA, Salam MMA, Hashem MIA, Soliman AA, Akeel NE, Abdellatif SH, Elsamad NA, Rass AA, Arafat MS. Serum and CSF adiponectin, leptin, and interleukin 6 levels as adipocytokines in Egyptian children with febrile seizures: a cross-sectional study. Ital J Pediatr 2016; 42:38. [PMID: 27068222 PMCID: PMC4828849 DOI: 10.1186/s13052-016-0250-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 04/04/2016] [Indexed: 12/20/2022] Open
Abstract
Background A febrile seizure (FS) is the most common convulsive disorder in children. Activation of cytokine network is involved in FS pathogenesis. Adiponectin, leptin and IL-6 are the major adipocytokines secreted by fat cells. To date, only a few studies concerned the association of adipocytokines with febrile seizures. In this study, we tried to investigate serum and CSF levels of adiponectin, leptin, and interleukin-6 (IL-6); as adipocytokines, for the first time in Egyptian children with febrile seizures. Methods This was a prospective cross-sectional study included one hundred patients with febrile seizure, and matched with age, gender, 100 children with febrile illness without seizures (febrile control, FC) and 100 healthy control group (HC). Serum and cerebrospinal fluid (CSF) levels of adiponectin, leptin, and (IL-6) were measured by enzyme-linked immunosorbent assay (ELISA) method. Results Serum adiponectin was significantly higher in children with FS (16.8 ± 3.7 ug/ml) and the FC group (18.3 ± 4.3 ug/ml) compared to the HC group (9.5 ± 2.2 ug/ml); P < 0.05, respectively. Serum leptin was significantly lower in children with FS (0.9 ± 0.3 ng/ml) compared to both the FC group (4.7 ± 1.2 ng/ml) and the HC group (1.8 ± 0.4 ng/ml); P < 0.01, respectively. Children with FS had significantly higher serum IL-6 levels (43.7 ± 11.7 ng/ml) than the FC group (21.9 ± 4.5 ng/ml) and the HC group (6.5 ± 1.8 ng/ml); P < 0.01, respectively. Patients with simple febrile seizures (SFS) had serum and CSF adiponectin levels similar to those with complex febrile seizures (CFS); (P > 0.05). Serum and CSF leptin levels were significantly lower in patients with CFS compared to the SFS group (P < 0.05). Serum and CSF IL-6 levels were significantly higher in patients with CFS compared to the SFS group (P < 0.01). On multivariate logistic regression analysis, the high serum IL-6 levels was the most significant risk factor associated with febrile seizures among studied children (OR: 6.2; 95 % CI: 3.58 –10.57; P = 0.0001). Conclusion Our data brought a novel observation that some adipocytokines like leptin and IL-6 could be, at least in part, an aetiopathogenetic factor in the manifestation of febrile seizures in susceptible Egyptian children. Moreover, we observed a significant association between high CSF IL-6 levels and susceptibility to complex febrile seizures as did the low CSF leptin levels.
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Affiliation(s)
- Seham F Azab
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt.
| | - Mohamed A Abdalhady
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Mohamed A A Almalky
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Ezzat K Amin
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Dina T Sarhan
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Eman M Elhindawy
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Mayy A N Allah
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Ahmed A Elhewala
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Mohamed M A Salam
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Mustafa I A Hashem
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Attia A Soliman
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Nagwa E Akeel
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Sawsan H Abdellatif
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Nahla A Elsamad
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Anwar A Rass
- Faculty of Medicine, Zagazig University, 18 Omar Bin Elkhattab St, Al Qawmia, Zagazig City, AlSharqia Governorate, Egypt
| | - Manal S Arafat
- M.D. Clinical Pathology, Mansoura Student Hospital, Mansoura, Egypt
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Electroacupunctre improves motor impairment via inhibition of microglia-mediated neuroinflammation in the sensorimotor cortex after ischemic stroke. Life Sci 2016; 151:313-322. [PMID: 26979777 DOI: 10.1016/j.lfs.2016.01.045] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 01/09/2016] [Accepted: 01/28/2016] [Indexed: 01/05/2023]
Abstract
AIMS Electroacupuncture (EA) is one of the safety and effective therapies for improving neurological and sensorimotor impairment via blockade of inappropriate inflammatory responses. However, the mechanisms of anti-inflammation involved is far from been fully elucidated. MAIN METHODS Focal cerebral ischemic stroke was administered by the middle cerebral artery occlusion and reperfusion (MCAO/R) surgery. The MCAO/R rats were accepted EA treatment at the LI 11 and ST 36 acupoints for consecutive 3days. The neurological outcome, animal behaviors test and molecular biology assays were used to evaluate the MCAO/R model and therapeutic effect of EA. KEY FINDINGS EA treatment for MCAO rats showed a significant reduction in the infarct volumes accompanied by functional recovery in mNSS outcomes, motor function performances. The possible mechanisms that EA treatment attenuated the over-activation of Iba-1 and ED1 positive microglia in the peri-infract sensorimotor cortex. Simultaneously, both tissue and serum protein levels of the tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and interleukin-6 (IL-6) were decreased by EA treatment in MCAO/R injured rats. The levels of inflammatory cytokine tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6) were decreased in the peri-infract sensorimotor cortex and blood serum of MCAO/R injured rats after EA treatment. Furthermore, we found that EA treatment prevented from the nucleus translocation of NF-κB p65 and suppressed the expression of p38 mitogen-activated protein kinase (p38 MAPK) and myeloid differentiation factor 88 (MyD88) in the peri-infract sensorimotor cortex. SIGNIFICANCE The findings from this study indicated that EA improved the motor impairment via inhibition of microglia-mediated neuroinflammation that invoked NF-κB p65, p38 MAPK and MyD88 produced proinflammatory cytokine in the peri-infract sensorimotor cortex of rats following ischemic stroke.
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Dasuri K, Pepping JK, Fernandez-Kim SO, Gupta S, Keller JN, Scherer PE, Bruce-Keller AJ. Elevated adiponectin prevents HIV protease inhibitor toxicity and preserves cerebrovascular homeostasis in mice. Biochim Biophys Acta Mol Basis Dis 2016; 1862:1228-35. [PMID: 26912411 DOI: 10.1016/j.bbadis.2016.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 02/03/2016] [Accepted: 02/17/2016] [Indexed: 01/22/2023]
Abstract
HIV protease inhibitors are key components of HIV antiretroviral therapies, which are fundamental in the treatment of HIV infection. However, the protease inhibitors are well-known to induce metabolic dysfunction which can in turn escalate the complications of HIV, including HIV associated neurocognitive disorders. As experimental and epidemiological data support a therapeutic role for adiponectin in both metabolic and neurologic homeostasis, this study was designed to determine if increased adiponectin could prevent the detrimental effects of protease inhibitors in mice. Adult male wild type (WT) and adiponectin-overexpressing (ADTg) mice were thus subjected to a 4-week regimen of lopinavir/ritonavir, followed by comprehensive metabolic, neurobehavioral, and neurochemical analyses. Data show that lopinavir/ritonavir-induced lipodystrophy, hypoadiponectinemia, hyperglycemia, hyperinsulinemia, and hypertriglyceridemia were attenuated in ADTg mice. Furthermore, cognitive function and blood-brain barrier integrity were preserved, while loss of cerebrovascular markers and white matter injury were prevented in ADTg mice. Finally, lopinavir/ritonavir caused significant increases in expression of markers of brain inflammation and decreases in synaptic markers in WT, but not in ADTg mice. Collectively, these data reinforce the pathophysiologic link from metabolic dysfunction to loss of cerebrovascular and cognitive homeostasis; and suggest that preservation and/or replacement of adiponectin could prevent these key aspects of HIV protease inhibitor-induced toxicity in clinical settings.
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Affiliation(s)
- Kalavathi Dasuri
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States
| | - Jennifer K Pepping
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States; Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA 70803, United States
| | - Sun-Ok Fernandez-Kim
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States
| | - Sunita Gupta
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States
| | - Jeffrey N Keller
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States
| | - Philipp E Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, United States
| | - Annadora J Bruce-Keller
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, United States.
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Liu XH, Yang YW, Dai HT, Cai SW, Chen RH, Ye ZQ. Protective role of adiponectin in a rat model of intestinal ischemia reperfusion injury. World J Gastroenterol 2015; 21:13250-13258. [PMID: 26715807 PMCID: PMC4679756 DOI: 10.3748/wjg.v21.i47.13250] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 06/11/2015] [Accepted: 09/02/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the potential protective role of adiponectin in intestinal ischemia reperfusion (I/R) injury.
METHODS: A rat model of intestinal I/R injury was established. The serum level of adiponectin in rats with intestinal I/R injury was determined by enzyme-linked immunosorbent assay (ELISA). The serum levels of interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α were also measured by ELISA. Apoptosis of intestinal cells was detected using the terminal deoxynucleotidyl transferase dUTP nick end labeling assay. The production of malondialdehyde (MDA) and superoxide dismutase (SOD) and villous injury scores were also measured.
RESULTS: Adiponectin was downregulated in the serum of rats with intestinal I/R injury compared with sham rats. No significant changes in the expression of adiponectin receptor 1 and adiponectin receptor 2 were found between sham and I/R rats. Pre-treatment with recombinant adiponectin attenuated intestinal I/R injury. The production of pro-inflammatory cytokines, including IL-6, IL-1β, and TNF-α, in rats with intestinal I/R injury was reduced by adiponectin pre-treatment. The production of MDA was inhibited, and the release of SOD was restored by adiponectin pre-treatment in rats with intestinal I/R injury. Adiponectin pre-treatment also inhibited cell apoptosis in these rats. Treatment with the AMP-activated protein kinase (AMPK) signaling pathway inhibitor, compound C, or the heme oxygenase 1 (HO-1) inhibitor, Snpp, attenuated the protective effects of adiponectin against intestinal I/R injury.
CONCLUSION: Adiponectin exhibits protective effects against intestinal I/R injury, which may involve the AMPK/HO-1 pathway.
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Kitagawa K, Miwa K, Okazaki S, Sakaguchi M, Mochizuki H. Serum high-molecular-weight adiponectin level and incident dementia in patients with vascular risk factors. Eur J Neurol 2015; 23:641-7. [PMID: 26682770 DOI: 10.1111/ene.12915] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Accepted: 10/01/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND PURPOSE The involvement of metabolic factors in the development of dementia has received much attention. However, previous studies have yielded conflicting results regarding how blood adipocytokine level impacts cognitive decline and dementia. This study aimed to clarify whether serum high-molecular-weight (HMW) adiponectin level is related to incident dementia. METHODS Data were from 466 patients (mean age 67.8 years, male 57%)--who had normal cognitive function and received brain magnetic resonance imaging--from amongst the 1106 patients in the Osaka Follow-up Study for Carotid Atherosclerosis, Part 2, a prospective cohort study of cardiovascular events and dementia amongst patients with vascular risk factors enrolled between 2001 and 2009. Baseline HMW adiponectin levels were measured using frozen serum. Dementia occurrence was examined in June 2013. RESULTS Serum HMW adiponectin level was 4.33 ± 2.95 μg/ml; the levels were lower in men than in women and negatively correlated with body mass index. During the follow-up period (median 6.9 years), 47 patients had incident dementia including Alzheimer's disease dementia (27), vascular dementia (13), mixed dementia (four), other dementia (three). Risks of dementia in patients with high versus low HMW adiponectin levels were almost identical (P = 0.689). No association was found between adiponectin levels and Alzheimer's disease dementia or vascular dementia in the whole group or amongst men and women separately. CONCLUSIONS This study demonstrated that serum HMW adiponectin level has little association with future dementia. Determination of metabolic factors involved in dementia requires evaluation of other biomarkers or parameters.
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Affiliation(s)
- K Kitagawa
- Department of Neurology, Tokyo Women's Medical University, Tokyo, Japan
| | - K Miwa
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Suita, Japan
| | - S Okazaki
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Suita, Japan
| | - M Sakaguchi
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Suita, Japan
| | - H Mochizuki
- Department of Neurology and Stroke Center, Osaka University Graduate School of Medicine, Suita, Japan
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45
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Therapeutic window of globular adiponectin against cerebral ischemia in diabetic mice: the role of dynamic alteration of adiponectin/adiponectin receptor expression. Sci Rep 2015; 5:17310. [PMID: 26611106 PMCID: PMC4661424 DOI: 10.1038/srep17310] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 10/28/2015] [Indexed: 01/14/2023] Open
Abstract
Recent studies have demonstrated that adiponectin (APN) attenuates cerebral ischemic/reperfusion via globular adiponectin (gAD). However, the therapeutic role of gAD in cerebral ischemic injury in type 1 diabetes mellitus (T1DM) remains unclear. Our results showed that gAD improved neurological scores and reduced the infarct volumes in the 8-week T1DM (T1DM-8W) mice, but not in the 2-week T1DM (T1DM-2W) mice. Moreover, the ischemic penumbra APN levels increased and peaked in T1DM-2W mice, and reduced to normal in T1DM-8W mice, while the APN receptor 1 (AdipoR1) expression change was the opposite. Administration of rosiglitazone in T1DM-2W mice up-regulated the expression of AdipoR1 and restored the neuroprotection of gAD, while intracerebroventricular injection of AdipoR1 small interfering RNA (siRNA) in T1DM-8W mice reversed it. Furthermore, the expression of p-PERK, p-IRE1 and GRP78 were increased whereas the expressions of CHOP and cleaved caspase-12 as well as the number of apoptotic neurons were decreased after gAD treatment in T1DM-8W mice. These beneficial effects of gAD were reversed by pretreatment with AdipoR1 siRNA. These results demonstrated a dynamic dysfunction of APN/AdipoR1 accompanying T1DM progression. Interventions bolstering AdipoR1 expression during early stages and gAD supplementation during advanced stages may potentially reduce the cerebral ischemic injury in diabetic patients.
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Ishii M, Iadecola C. Adipocyte-derived factors in age-related dementia and their contribution to vascular and Alzheimer pathology. Biochim Biophys Acta Mol Basis Dis 2015; 1862:966-74. [PMID: 26546479 DOI: 10.1016/j.bbadis.2015.10.029] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 10/29/2015] [Accepted: 10/30/2015] [Indexed: 12/23/2022]
Abstract
Age-related dementia is increasingly recognized as having a mixed pathology, with contributions from both cerebrovascular factors and pathogenic factors associated with Alzheimer's disease (AD). Furthermore, there is accumulating evidence that vascular risk factors in midlife, e.g., obesity, diabetes, and hypertension, increase the risk of developing late-life dementia. Since obesity and changes in body weight/adiposity often drive diabetes and hypertension, understanding the relationship between adiposity and age-related dementia may reveal common underlying mechanisms. Here we offer a brief appraisal of how changes in body weight and adiposity are related to both AD and dementia on vascular basis, and examine the involvement of two key adipocyte-derived hormones: leptin and adiponectin. The evidence suggests that in midlife increased body weight/adiposity and subsequent changes in adipocyte-derived hormones may increase the long-term susceptibility to dementia. On the other hand, later in life, decreases in body weight/adiposity and related hormonal changes are early manifestations of disease that precede the onset of dementia and may promote AD and vascular pathology. Understanding the contribution of adiposity to age-related dementia may help identify the underlying pathological mechanisms common to both vascular dementia and AD, and provide new putative targets for early diagnosis and therapy. This article is part of a Special Issue entitled: Vascular Contributions to Cognitive Impairment and Dementia, edited by M. Paul Murphy, Roderick A. Corriveau and Donna M. Wilcock.
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Affiliation(s)
- Makoto Ishii
- Feil Family Brain and Mind Research Institute, Joan and Sanford I. Weill Medical College of Cornell University, USA
| | - Costantino Iadecola
- Feil Family Brain and Mind Research Institute, Joan and Sanford I. Weill Medical College of Cornell University, USA.
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47
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The emerging role of adiponectin in cerebrovascular and neurodegenerative diseases. Biochim Biophys Acta Mol Basis Dis 2015; 1852:1887-94. [DOI: 10.1016/j.bbadis.2015.06.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/10/2015] [Accepted: 06/23/2015] [Indexed: 02/06/2023]
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48
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Wu MH, Chio CC, Tsai KJ, Chang CP, Lin NK, Huang CC, Lin MT. Obesity Exacerbates Rat Cerebral Ischemic Injury through Enhancing Ischemic Adiponectin-Containing Neuronal Apoptosis. Mol Neurobiol 2015; 53:3702-3713. [DOI: 10.1007/s12035-015-9305-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 06/11/2015] [Indexed: 12/26/2022]
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49
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Aguilar-Valles A, Inoue W, Rummel C, Luheshi GN. Obesity, adipokines and neuroinflammation. Neuropharmacology 2015; 96:124-34. [PMID: 25582291 DOI: 10.1016/j.neuropharm.2014.12.023] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/16/2014] [Accepted: 12/19/2014] [Indexed: 12/14/2022]
Abstract
Global levels of obesity are reaching epidemic proportions, leading to a dramatic increase in incidence of secondary diseases and the significant economic burden associated with their treatment. These comorbidities include diabetes, cardiovascular disease, and some psychopathologies, which have been linked to a low-grade inflammatory state. Obese individuals exhibit an increase in circulating inflammatory mediators implicated as the underlying cause of these comorbidities. A number of these molecules are also manufactured and released by white adipose tissue (WAT), in direct proportion to tissue mass and are collectively known as adipokines. In the current review we focused on the role of two of the better-studied members of this family namely, leptin and adiponectin, with particular emphasis on their role in neuro-immune interactions, neuroinflammation and subsequent brain diseases. This article is part of a Special Issue entitled 'Neuroimmunology and Synaptic Function'.
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Affiliation(s)
- Argel Aguilar-Valles
- Department of Neuroscience, Université de Montréal and Goodman Cancer Centre, Department of Biochemistry, McGill University, Montréal, Canada
| | - Wataru Inoue
- Robarts Research Institute, Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Christoph Rummel
- Department of Veterinary-Physiology and -Biochemistry, Justus-Liebig-University Giessen, Frankfurter Strasse 100, D-35392 Giessen, Germany
| | - Giamal N Luheshi
- Douglas Mental Health University Institute, Department of Psychiatry, McGill University, Montreal, Quebec H4H 1R3, Canada.
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50
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Punicalagin attenuated cerebral ischemia–reperfusion insult via inhibition of proinflammatory cytokines, up-regulation of Bcl-2, down-regulation of Bax, and caspase-3. Mol Cell Biochem 2015; 402:141-8. [DOI: 10.1007/s11010-014-2321-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 12/23/2014] [Indexed: 12/14/2022]
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