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叶 红, 张 钰, 云 琦, 杜 若, 李 璐, 李 玉, 高 琴. [Resveratrol alleviates hyperglycemia-induced cardiomyocyte hypertrophy by maintaining mitochondrial homeostasis via enhancing SIRT1 expression]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2024; 44:45-51. [PMID: 38293975 PMCID: PMC10878887 DOI: 10.12122/j.issn.1673-4254.2024.01.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Indexed: 02/01/2024]
Abstract
OBJECTIVE To investigate whether resveratrol alleviates hyperglycemia-induced cardiomyocyte hypertrophy by enhancing the expression of silent information regulation 2 homolog 1 (SIRT1) to maintain mitochondrial homeostasis. METHODS Rat cardiomyocytes H9c2 cells with or without lentivirus-mediated mRNA interference of SIRT1 were cultured in high glucose (HG) and treated with resveratrol for 72 h. The changes in superoxide dismutase (SOD) activity, malondialdehyde (MDA) content, reactive oxygen species (ROS) level, and relative surface of the cells were examined, and the mRNA expressions of atrial natriuretic factor (ANF) and brain natriuretic peptide (BNP) and protein expressions of SIRT1, mitochondrial fusion related proteins optic atrophy protein 1 (OPA1) and mitofusin 2, mitochondrial division related proteins dynamin-related protein 1 (DRP1) and fission protein 1 (FIS1), and mitophagy-related proteins BNIP3L and LC3 were detected using RT-qPCR and Western blotting. RESULTS HG exposure significantly decreased SOD activity, increased MDA content, ROS production, relative cell surface, and the mRNA expressions of ANF and BNP in the cardiomyocytes; the protein expressions of SIRT1, OPA1, mitofusin 2 and BNIP3L and LC3-Ⅱ/LC3-Ⅰ ratio were all decreased and the protein expressions of DRP1 and FIS1 increased in HG-exposed cells (P<0.01). All these changes in HG-exposed cardiomyocytes were significantly alleviated by treatment with resveratrol (P<0.05). The protective effects of resveratrol against HG exposure in the cardiomyocytes were obviously attenuated by transfection of the cells with si-SIRT1 (P<0.05). CONCLUSION Resveratrol inhibits hyperglycemia-induced cardiomyocyte hypertrophy by reducing oxidative stress, the mechanisms of which involve enhancement of SIRT1 protein expression, regulation of mitochondrial fusion and division balance, and promoting BNIP3L-mediated mitophagy to maintain mitochondrial homeostasis in the cells.
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Affiliation(s)
- 红伟 叶
- 蚌埠医科大学生理学教研室,安徽 蚌埠 233000Department of Physiology, Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管疾病基础与临床蚌埠医科大学重点实验室,安徽 蚌埠 233000Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical University, Bengbu 233000, China
| | - 钰明 张
- 蚌埠医科大学生理学教研室,安徽 蚌埠 233000Department of Physiology, Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管疾病基础与临床蚌埠医科大学重点实验室,安徽 蚌埠 233000Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical University, Bengbu 233000, China
| | - 琦 云
- 蚌埠医科大学生理学教研室,安徽 蚌埠 233000Department of Physiology, Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管疾病基础与临床蚌埠医科大学重点实验室,安徽 蚌埠 233000Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical University, Bengbu 233000, China
| | - 若丽 杜
- 蚌埠医科大学生理学教研室,安徽 蚌埠 233000Department of Physiology, Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管疾病基础与临床蚌埠医科大学重点实验室,安徽 蚌埠 233000Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical University, Bengbu 233000, China
| | - 璐 李
- 蚌埠医科大学生理学教研室,安徽 蚌埠 233000Department of Physiology, Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管疾病基础与临床蚌埠医科大学重点实验室,安徽 蚌埠 233000Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical University, Bengbu 233000, China
| | - 玉萍 李
- 蚌埠医科大学生理学教研室,安徽 蚌埠 233000Department of Physiology, Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管疾病基础与临床蚌埠医科大学重点实验室,安徽 蚌埠 233000Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical University, Bengbu 233000, China
| | - 琴 高
- 蚌埠医科大学生理学教研室,安徽 蚌埠 233000Department of Physiology, Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管疾病基础与临床蚌埠医科大学重点实验室,安徽 蚌埠 233000Key Laboratory of Basic and Clinical Cardiovascular Diseases, Bengbu Medical University, Bengbu 233000, China
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Zhou L, Wu T, Zhong Z, Yi L, Li Y. Acupuncture for painful diabetic peripheral neuropathy: a systematic review and meta-analysis. Front Neurol 2023; 14:1281485. [PMID: 38046594 PMCID: PMC10690617 DOI: 10.3389/fneur.2023.1281485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/06/2023] [Indexed: 12/05/2023] Open
Abstract
Background Painful Diabetic Peripheral Neuropathy (PDPN) is a common complication of diabetes, it severely affects the quality of life of patients. Acupuncture has been shown to be effective in the treatment of PDPN. To evaluate the efficacy and safety of acupuncture for pain relief in patients diagnosed with diabetic peripheral neuropathy, we conducted a systematic review and meta-analysis. Method We thoroughly searched specific databases, which included PUBMED, EMBASE, Web of Science, the Cochrane Library, the Chinese Biomedical Literature Database, the Chinese National Knowledge Infrastructure, China Science and Technology Journal Database and the Wanfang Data. All randomized controlled trials of acupuncture therapy for PDPN with pain change scales were included. Included studies were assessed for methodological quality according to the risk of bias from the Cochrane handbook. Meta-analyses were carried out to analyze the outcomes, subgroup analyses, sensitivity analyses, and funnel plot analyses were undertaken. Results This systematic review evaluated a total of 25 trials of acupuncture therapy in combination with conventional treatment, involving a total of 1,561 patients with PDPN. According to the results, among 16 trials using VAS scores with a total of 1,552 patients, 2 acupoint injection trials (MD -2.38, 95% CI: -2.76 to -2.01, p < 0.00001), 12 acupuncture trials (MD -1. 31, 95% CI: -1.60 to -1.02, p < 0.00001) and 2 moxibustion trials showed that acupuncture therapy combined with conventional treatment improved pain better than conventional treatment (MD -2.50, 95% CI: -2.76 to -2.24, p < 0.00001). In the subgroup analysis of the acupuncture group, the results of the 5 trials in which the location of acupuncture was only in the limbs (MD -1.27, 95% CI: -1.54 to -1.01, p < 0.00001) and the 7 trials both in limbs and torso (MD -1.38, 95% CI: -1.81 to -0.95, p < 0.00001) also demonstrated that acupuncture was effective in pain improvement. Conclusion This meta-analysis analyzed the possible efficacy of acupuncture in combination with conventional treatment for pain in diabetic peripheral neuropathy, particularly when acupoints are located in the limbs. However, there are limitations to this meta-analysis and future clinical studies are needed to confirm these findings. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42023449447, identifier (CRD42023449447).
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Affiliation(s)
- Luolin Zhou
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Tong Wu
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhishan Zhong
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lichen Yi
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuemei Li
- Department of Rehabilitation, Guangzhou Eighth People’s Hospital, Guangzhou Medical University, Guangzhou, China
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Tepebaşi MY, Aşci H, Coşan S, Sevük MA, Karakuyu NF, Özmen Ö. Irbesartan has a curative effect on lipopolysaccharide-induced cardiotoxicity by antioxidant and antiapoptotic pathways. Rev Port Cardiol 2023; 42:895-903. [PMID: 37385588 DOI: 10.1016/j.repc.2023.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/23/2023] [Accepted: 03/01/2023] [Indexed: 07/01/2023] Open
Abstract
INTRODUCTION AND OBJECTIVE Lipopolysaccharide (LPS) has been associated with myocardial inflammation, oxidative stress, apoptosis, and cardiac dysfunction, as well as death by causing sepsis. In this study, we investigated the effect of irbesartan (IRB), an angiotensin receptor antagonist, on cardiotoxicity caused by LPS. METHODS The experiment involved 24 Wistar albino rats divided into three groups of eight: control, LPS (5 mg/kg), and LPS (5 mg/kg)+IRB (3 mg/kg). Parameters including total oxidative status, total antioxidant status, oxidative stress index, and ischemia-modified albumin were measured to assess oxidative stress in heart tissues and serum. Serum CK, CK-MB, and LDH levels were measured spectrophotometrically. RT-qPCR was used to detect the mRNA expression levels of Bcl-2, BAX, p53, caspase-3, and sirtuin 1. Tissues taken from the heart and aorta were examined by immunohistochemistry and histopathology. RESULTS While there was an increase in the parameters indicating heart damage, oxidative stress, and apoptosis in the group given LPS, there was an improvement in all parameters and heart damage in the group treated with IRB. CONCLUSION As a result of our study, we determined that IRB has an ameliorating effect on myocardial damage caused by oxidative stress and apoptosis developed by the LPS-induced sepsis model.
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Affiliation(s)
| | - Halil Aşci
- Department of Medical Pharmacology, University of Süleyman Demirel, Isparta, TR, Turkey
| | - Samet Coşan
- Department of Medical Pharmacology, University of Süleyman Demirel, Isparta, TR, Turkey
| | | | - Nasıf Fatih Karakuyu
- Department of Medical Pharmacology, University of Süleyman Demirel, Isparta, TR, Turkey
| | - Özlem Özmen
- Department of Pathology, University of Mehmet Akif Ersoy, Burdur, TR, Turkey
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Liu J, Jin Z, Wang X, Jakoš T, Zhu J, Yuan Y. RAGE pathways play an important role in regulation of organ fibrosis. Life Sci 2023; 323:121713. [PMID: 37088412 DOI: 10.1016/j.lfs.2023.121713] [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: 02/22/2023] [Revised: 04/09/2023] [Accepted: 04/18/2023] [Indexed: 04/25/2023]
Abstract
Organ fibrosis is a pathological process of fibroblast activation and excessive deposition of extracellular matrix after persistent tissue injury and therefore is a common endpoint of many organ pathologies. Multiple cellular types and soluble mediators, including chemokines, cytokines and non-peptidic factors, are implicated in fibrogenesis and the remodeling of tissue architecture. The molecular basis of the fibrotic process is complex and consists of closely intertwined signaling networks. Research has strived for a better understanding of these pathological mechanisms to potentially reveal novel therapeutic targets for fibrotic diseases. In light of new knowledge, the receptor for advanced glycation end products (RAGE) emerged as an important candidate for the regulation of a wide variety of cellular functions related to fibrosis, including inflammation, cell proliferation, apoptosis, and angiogenesis. RAGE is a pattern recognition receptor that binds a broad range of ligands such as advanced glycation end products, high mobility group box-1, S-100 calcium-binding protein and amyloid beta protein. Although the link between RAGE and fibrosis has been established, the exact mechanisms need be investigated in further studies. The aim of this review is to collect all available information about the intricate function of RAGE and its signaling cascades in the pathogenesis of fibrotic diseases within different organs. In addition, to the major ligands and signaling pathways, we discuss potential strategies for targeting RAGE in fibrosis. We emphasize the functional links between RAGE, inflammation and fibrosis that may guide further studies and the development of improved therapeutic drugs.
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Affiliation(s)
- Jing Liu
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University School of Pharmacy, Shanghai 201100, China.
| | - Zhedong Jin
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University School of Pharmacy, Shanghai 201100, China.
| | - Xiaolong Wang
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University School of Pharmacy, Shanghai 201100, China.
| | - Tanja Jakoš
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University School of Pharmacy, Shanghai 201100, China.
| | - Jianwei Zhu
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University School of Pharmacy, Shanghai 201100, China.
| | - Yunsheng Yuan
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, Shanghai Jiao Tong University School of Pharmacy, Shanghai 201100, China.
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Klotho improves cardiac fibrosis, inflammatory cytokines, ferroptosis, and oxidative stress in mice with myocardial infarction. J Physiol Biochem 2023:10.1007/s13105-023-00945-5. [PMID: 36701072 DOI: 10.1007/s13105-023-00945-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 01/16/2023] [Indexed: 01/27/2023]
Abstract
The anti-aging protein Klotho has been associated with cardiovascular health protection. Nevertheless, the protective mechanism remains unknown. The present study is aimed at exploring the effect of Klotho on cardiac remodeling and its potential mechanism in mice with myocardial infarction (MI). We used left anterior coronary artery descending ligation to develop an MI model for in vivo analyses. In contrast, H9C2 cells and cardiac fibroblasts were used to establish the oxygen-glucose deprivation (OGD) model in in vitro analyses. In vivo and in vitro models were treated with Klotho. Compound C, an AMPK signaling inhibitor, was used to determine whether Klotho's effects are mediated through the AMPK/mTOR signaling pathway. Echocardiography, Masson trichrome staining, immunofluorescence, immunohistochemistry, real-time polymerase chain reaction (RT-PCR), and western blot were used to detect the related indicators. The findings of the in vivo model indicate that Klotho treatment improved the mice's cardiac function, reduced cardiac fibrosis, and attenuated myocardial inflammatory factors, ferroptosis, and oxidative stress. The results of the in vitro model were in line with the findings of in vivo modeling. An AMPK inhibitor, Compound C, reversed all these effects. In conclusion, Klotho potentially improves cardiac remodeling in MI mice by regulating AMPK/mTOR signaling, demonstrating Klotho as an effective MI therapeutic agent.
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Jia Q, Yang R, Mehmood S, Li Y. Epigallocatechin-3-gallate attenuates myocardial fibrosis in diabetic rats by activating autophagy. Exp Biol Med (Maywood) 2022; 247:1591-1600. [PMID: 35833541 PMCID: PMC9554167 DOI: 10.1177/15353702221110646] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Epigallocatechin-3-gallate (EGCG) possesses anti-fibrotic potential in diverse tissues; however, the molecular mechanisms underlying the impacts of EGCG on diabetes-induced myocardial fibrosis remain unclear. This present study aimed to unravel the anti-fibrotic effects of EGCG on the heart in type 2 diabetic rats and investigate its molecular mechanisms. Rats were randomly assigned to the following four groups: Normal (NOR), diabetic cardiomyopathy (DCM), DCM + 40 mg/kg EGCG, and DCM + 80 mg/kg EGCG groups. After 8 weeks of EGCG treatment, fasting blood glucose, left ventricular hemodynamic indices, heart index, and myocardial injury-related parameters were measured. Hematoxylin and eosin staining and Sirius Red staining were used to evaluate myocardial pathological alterations and collagen accumulation. The contents of myocardial hydroxyproline, collagen-I, collagen-III, transforming growth factor (TGF)-β1, matrix metalloprotease (MMP)-2, and MMP-9 were measured. The gene expression levels of myocardial TGF-β1, MMP-2, and MMP-9 were detected. Autophagic regulators, including adenosine 5'-monophosphate-activated protein kinase (AMPK) and mammalian target of rapamycin (mTOR), and autophagic markers, including microtubule-associated protein-1 light chain 3 and Beclin1 were estimated. The results indicated that diabetes significantly decreased cardiac contractile function and aggravated myocardial hypertrophy and injury. Furthermore, diabetes repressed the activation of autophagy in myocardial tissue and promoted cardiac fibrosis. Following ingestion with different doses of EGCG, myocardial contractile dysfunction, hypertrophy and injury were ameliorated; myocardial autophagy was activated, and myocardial fibrosis was alleviated in the EGCG treatment groups. In conclusion, these findings suggested that EGCG could attenuate cardiac fibrosis in type 2 diabetic rats, and its underlying mechanisms associated with activation of autophagy via modulation of the AMPK/mTOR pathway and then repression of the TGF-β/MMPs pathway.
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Affiliation(s)
- Qiang Jia
- Department of Physiology, Bengbu Medical College, Bengbu 233030, Anhui, China,Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233030, Anhui, China
| | - Rui Yang
- School of Life Sciences, Hefei Normal University, Hefei 230601, Anhui, China,Rui Yang.
| | - Shomaila Mehmood
- School of Life Sciences, Anhui University, Hefei 230601, Anhui, China
| | - Yan Li
- Clinical College, Bengbu Medical College, Bengbu 233030, Anhui, China
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İlhan İ, Aşçi H, Hasseyid N, Doğan HK, Ağirca Ş, Altintaş M, Tepebasi MY. Irbesartan decreased mitochondrial stress related apoptosis in cisplatin induced acute kidney injury via regulating BCL-2/BAX signaling. Mol Biol Rep 2022; 49:6125-6133. [PMID: 35366178 DOI: 10.1007/s11033-022-07403-3] [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: 02/07/2022] [Accepted: 03/17/2022] [Indexed: 12/06/2022]
Abstract
BACKGROUND Cisplatin (CPN) is used in the treatment of various cancers. However, the especially nephrotoxic effect is limiting its use. We aimed to evaluate the renoprotective effects of Irbesartan (IBN) on CPN-induced acute kidney injury via mitochondrial stress related apoptosis. METHODS AND RESULTS 32 rats were divided into 4 groups as control, CPN, CPN + IBN and IBN. Water or IBN 50 mg/kg (orally) was administered for 7 days and a single dose of CPN (5 mg/kg) intraperitoneally was given CPN and CPN + IBN groups on fourth day of experiment. At the end of the experiment, serum BUN and creatinine (Cre) levels, which are the indicators of kidney function are measured. Bcl-2-associated X protein (Bax) and B-cell-lymphoma-2 (Bcl-2) mRNA levels were analyzed by using qRT-PCR from kidneys as a mitochondrial stress indicator. Also, active caspase-3(cas-3) protein and tumor necrosis factor alpha (TNF-α) expressions were examined by immunostaining of the kidney tissues. For evaluation of oxidative stress, malondialdehyde (MDA), total oxidant status (TOS) and total antioxidant status (TAS) levels of renal tissues were measured and oxidative stress index (OSI) were calculated. CPN increased serum BUN and creatinine levels. Also, MDA, TOS and OSI levels were significantly elevated and TAS levels decreased in the CPN group. Moreover, CPN elevated the levels of Bax, active cas-3 protein and TNF-α expressions and suppressed Bcl-2 levels. IBN treatment reversed all these changes. CONCLUSIONS IBN significantly regressed kidney damage by its anti-inflammatory and antioxidant activity via inhibiting mitochondrial stress. IBN could be used as a renoprotective agent in CPN-induced kidney injury.
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Affiliation(s)
- İlter İlhan
- Department of Biochemistry, Faculty of Medicine, Suleyman Demirel University, 32000, Isparta, Turkey.
| | - Halil Aşçi
- Department of Pharmacology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Nursel Hasseyid
- Department of Pharmacology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
| | - Hatice Kubra Doğan
- Department of Bioengineering, Institute of Science, Suleyman Demirel University, Isparta, Turkey
| | - Şerife Ağirca
- Department of Pathology, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Melike Altintaş
- Department of Pathology, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, Turkey
| | - Muhammet Yusuf Tepebasi
- Department of Medical Genetic, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
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Tuleta I, Frangogiannis NG. Fibrosis of the diabetic heart: Clinical significance, molecular mechanisms, and therapeutic opportunities. Adv Drug Deliv Rev 2021; 176:113904. [PMID: 34331987 PMCID: PMC8444077 DOI: 10.1016/j.addr.2021.113904] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/19/2021] [Accepted: 07/24/2021] [Indexed: 01/02/2023]
Abstract
In patients with diabetes, myocardial fibrosis may contribute to the pathogenesis of heart failure and arrhythmogenesis, increasing ventricular stiffness and delaying conduction. Diabetic myocardial fibrosis involves effects of hyperglycemia, lipotoxicity and insulin resistance on cardiac fibroblasts, directly resulting in increased matrix secretion, and activation of paracrine signaling in cardiomyocytes, immune and vascular cells, that release fibroblast-activating mediators. Neurohumoral pathways, cytokines, growth factors, oxidative stress, advanced glycation end-products (AGEs), and matricellular proteins have been implicated in diabetic fibrosis; however, the molecular links between the metabolic perturbations and activation of a fibrogenic program remain poorly understood. Although existing therapies using glucose- and lipid-lowering agents and neurohumoral inhibition may act in part by attenuating myocardial collagen deposition, specific therapies targeting the fibrotic response are lacking. This review manuscript discusses the clinical significance, molecular mechanisms and cell biology of diabetic cardiac fibrosis and proposes therapeutic targets that may attenuate the fibrotic response, preventing heart failure progression.
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Affiliation(s)
- Izabela Tuleta
- The Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx NY, USA
| | - Nikolaos G Frangogiannis
- The Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx NY, USA.
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Zhou D, Huang Z, Zhu X, Hong T, Zhao Y. Combination of endothelial progenitor cells and BB-94 significantly alleviates brain damage in a mouse model of diabetic ischemic stroke. Exp Ther Med 2021; 22:789. [PMID: 34055088 PMCID: PMC8145984 DOI: 10.3892/etm.2021.10221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/01/2021] [Indexed: 12/12/2022] Open
Abstract
Ischemic stroke is a complication of chronic macrovascular disease in type 2 diabetes. However, the pathogenesis of diabetic ischemic stroke has not yet been fully clarified. The aim of the present study was to investigate the underlying effects of endothelial progenitor cells (EPCs) and the matrix metalloproteinase inhibitor BB-94 on diabetic stroke. In vitro experiments were performed using oxygen-glucose deprivation/reoxygenation (OGD/R) model cells, established using HT22 mouse hippocampal cells. MTT assays and flow cytometry revealed that BB-94 prominently induced the proliferation of the OGD/R model cells and prevented their apoptosis. When EPCs and BB-94 were applied to the OGD/R model cells in combination, proliferation was further accelerated and oxidative damage was attenuated. In vivo experiments were also performed using a middle cerebral artery occlusion (MCAO) mouse model. The results of modified neurological severity scoring and oxidative stress marker analysis demonstrated that EPCs and BB-94 prominently alleviated cerebral ischemia/reperfusion injury in the MCAO model mice. Furthermore, reverse transcription-quantitative PCR and western blot assays revealed that EPCs in combination with BB-94 significantly downregulated the expression of matrix metalloproteinases (MMPs) and upregulated the expression of tissue inhibitor of metalloproteinases 1 in OGD/R cells and MCAO model mice. The results suggest that EPCs were successfully isolated and identified, and the OGD/R cell and MCAO mouse models were successfully established. They also indicate that EPCs alone or in combination with BB-94 may exert protective effects against ischemic stroke via the reduction of MMP expression.
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Affiliation(s)
- Daixuan Zhou
- Queen Mary College, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
| | - Zhi Huang
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou 550002, P.R. China
| | - Xiaoxi Zhu
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education, Guizhou Medical University, Guiyang, Guizhou 550002, P.R. China
| | - Tao Hong
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330029, P.R. China
| | - Yuanli Zhao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, P.R. China
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The cardiovascular complications of diabetes: a striking link through protein glycation. ACTA ACUST UNITED AC 2020; 58:188-198. [PMID: 32759408 DOI: 10.2478/rjim-2020-0021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Indexed: 12/17/2022]
Abstract
Diabetes mellitus is a predominant cause of mortality and morbidity worldwide. One of its serious health problems is cardiovascular complications. Advanced glycation end products (AGEs) are a group of heterogeneous toxic oxidant compounds that are formed after a non-enzymatic reaction between monosaccharides and free amino groups of proteins, compound lipids, and nucleic acids. AGE interacts with various types of cells through a receptor for AGE (RAGE). The interaction between AGE and RAGE is responsible for a cascade of inflammation, oxidative stress, and disruption of calcium homeostasis in cardiac cells of diabetic patients. There is striking evidence that the AGE/RAGE axis with its consequences on inflammation and oxidative stress plays a major role in the development of cardiovascular complications. Therefore, considering AGE as a therapeutic target with foreseeable results would be a wise direction for future research. Interestingly, several studies on nutraceutical, pharmaceutical, and natural products have begun to reveal promising therapeutic results, and this could lead to better health outcomes for many diabetic patients worldwide. This article discusses the current literature addressing the connection between protein glycation and diabetes cardiovascular complications and suggests future avenues of research.
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RAGE Signaling in Melanoma Tumors. Int J Mol Sci 2020; 21:ijms21238989. [PMID: 33256110 PMCID: PMC7730603 DOI: 10.3390/ijms21238989] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 12/18/2022] Open
Abstract
Despite recent progresses in its treatment, malignant cutaneous melanoma remains a cancer with very poor prognosis. Emerging evidences suggest that the receptor for advance glycation end products (RAGE) plays a key role in melanoma progression through its activation in both cancer and stromal cells. In tumors, RAGE activation is fueled by numerous ligands, S100B and HMGB1 being the most notable, but the role of many other ligands is not well understood and should not be underappreciated. Here, we provide a review of the current role of RAGE in melanoma and conclude that targeting RAGE in melanoma could be an approach to improve the outcomes of melanoma patients.
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Rong L, Sun S, Zhu F, Zhao Y, Gao Q, Zhang H, Tang B, Wang H, Kang P. [Expression of NLRP1 inflammasomes in myocardial tissue of diabetic rats]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2020; 40:87-92. [PMID: 32376565 DOI: 10.12122/j.issn.1673-4254.2020.01.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To observe the expression of NLRP1 inflammasomes in myocardial tissues in rats with a high-fat and highsugar diet and in diabetic rats analyze the role of NLRP1 inflammasomes in the pathogenesis of diabetic cardiomyopathy. METHODS Male SD rats were divided into normal control group, high-sugar and high-fat diet (HC) group and diabetes group. Rat models of diabetes were established by intraperitoneal injection of streptozotocin (STZ; 30 mg/kg). Serum levels of cholesterol (TC), triglyceride (TG), and fasting insulin (FINS) were measured after 8 weeks of feeding, and the insulin resistance index (IRI) and insulin sensitivity index (ISI) were calculated; Echocardiographic evaluation of cardiac structure and function was performed, and Western blotting and real-time fluorescent quantitative PCR (RT-qRCP) were used to detect the protein and mRNA expressions of NLRP1, ASC, and caspase 1 in the myocardial tissue. RESULTS Compared with the control rats, the rats in the HC group had significantly increased body weight (BW), serum levels of TG and TC, mRNA expressions of NLRP1 and caspase 1, and the protein expression of NLRP1 (P < 0.01) without significant changes in FINS, IRI, ISI, or cardiac ultrasound findings (P > 0.05) or in myocardial ASC and caspase 1 protein expressions or serum levels of IL-1β and IL-18 (P > 0.05). In the diabetic rats, TC, TG, and FBG levels increased and FINS, ISI decreased significantly (P < 0.01); the left ventricular end-diastolic diameter (LVID) and the left ventricular end-systolic diameter (LVSD) increased while the ejection fraction (LVEF), short axis shortening rate (FS), and E/A ratio all decreased. The expressions of NLRP1/ASC/caspase 1 pathway mRNA and NLRP1 and caspase 1 proteins also increased but myocardium ASC protein expression did not show significant changes in the diabetic rats (P > 0.05). IL-1β and IL-18 levels were also significantly higher in the diabetic rats than in the control group (P < 0.05). Compared with those in HC group, the diabetic rats showed significantly increased serum FBG and decreased FINS, ISI and BW (P < 0.01) with decreased LVSD, LVEF and E/A ratio and increased levels of NLRP1 and caspase 1 protein expressions and serum L-1β and IL-18 levels (P < 0.01). CONCLUSIONS Diabetes can cause abnormal changes in cardiac structure and functions and induce inflammatory response in the myocardium, which may be related to the activation of NLRP1/ASC/ caspase 1 inflammasomes.
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Affiliation(s)
- Li Rong
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Shuo Sun
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Feiyu Zhu
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Yi Zhao
- Department of Clinical Medicine, South Campus, Anhui Medical University, Hefei 230000, China
| | - Qin Gao
- Department of Physiology, Bengbu Medical College, Bengbu 233030, China
| | - Heng Zhang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Bi Tang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Hongju Wang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
| | - Pinfang Kang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu 233030, China
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