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Zhu X, Wang B, Yu H, Li C, Zhao Y, Zhong Y, Tang W, Zhou Y, Huang X, Zhu H, Wu Y, Yang K, Wei Y, Gao Z, Dong J. Icariin attenuates asthmatic airway inflammation via modulating alveolar macrophage activation based on network pharmacology and in vivo experiments. J Gene Med 2024; 26:e3718. [PMID: 38979822 DOI: 10.1002/jgm.3718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 03/23/2024] [Accepted: 06/19/2024] [Indexed: 07/10/2024] Open
Abstract
BACKGROUND Icariin (ICA) inhibits inflammatory response in various diseases, but the mechanism underlying ICA treating airway inflammation in asthma needs further understood. We aimed to predict and validate the potential targets of ICA against asthma-associated airway inflammation using network pharmacology and experiments. METHODS The ovalbumin-induced asthma-associated airway inflammation mice model was established. The effects of ICA were evaluated by behavioral, airway hyperresponsiveness, lung pathological changes, inflammatory cell and cytokines counts. Next, the corresponding targets of ICA were mined via the SEA, CTD, HERB, PharmMapper, Symmap database and the literature. Pubmed-Gene and GeneCards databases were used to screen asthma and airway inflammation-related targets. The overlapping targets were used to build an interaction network, analyze gene ontology and enrich pathways. Subsequently, flow cytometry, quantitative real-time PCR and western blotting were employed for validation. RESULTS ICA alleviated the airway inflammation of asthma; 402 targets of ICA, 5136 targets of asthma and 4531 targets of airway inflammation were screened; 216 overlapping targets were matched and predicted ICA possesses the potential to modulate asthmatic airway inflammation by macrophage activation/polarization. Additionally, ICA decreased M1 but elevated M2. Potential targets that were disrupted by asthma inflammation were restored by ICA treatment. CONCLUSIONS ICA alleviates airway inflammation in asthma by inhibiting the M1 polarization of alveolar macrophages, which is related to metabolic reprogramming. Jun, Jak2, Syk, Tnf, Aldh2, Aldh9a1, Nos1, Nos2 and Nos3 represent potential targets of therapeutic intervention. The present study enhances understanding of the anti-airway inflammation effects of ICA, especially in asthma.
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Affiliation(s)
- Xiaofei Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Bin Wang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Hang Yu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Congcong Li
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Yuhang Zhao
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Yuanyuan Zhong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Weifeng Tang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Yaolong Zhou
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Xi Huang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Huahe Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Yueren Wu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Kai Yang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Ying Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Zhen Gao
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Institute of Integrative Medicine, Fudan University, Shanghai, China
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Lu Q, Qin X, Chen C, Yu W, Lin J, Liu X, Guo R, Reiter RJ, Ashrafizadeh M, Yuan M, Ren J. Elevated levels of alcohol dehydrogenase aggravate ethanol-evoked cardiac remodeling and contractile anomalies through FKBP5-yap-mediated regulation of ferroptosis and ER stress. Life Sci 2024; 343:122508. [PMID: 38382873 DOI: 10.1016/j.lfs.2024.122508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/07/2024] [Accepted: 02/16/2024] [Indexed: 02/23/2024]
Abstract
Alcohol intake provokes severe organ injuries including alcoholic cardiomyopathy with hallmarks of cardiac remodeling and contractile defects. This study examined the toxicity of facilitated ethanol metabolism in alcoholism-evoked changes in myocardial morphology and contractile function, insulin signaling and various cell death domains using cardiac-selective overexpression of alcohol dehydrogenase (ADH). WT and ADH mice were offered an alcohol liquid diet for 12 weeks prior to assessment of cardiac geometry, function, ER stress, apoptosis and ferroptosis. Alcohol intake provoked pronounced glucose intolerance, cardiac remodeling and contractile anomalies with apoptosis, ER stress, and ferroptosis, the effects were accentuated by ADH with the exception of global glucose intolerance. Hearts from alcohol ingesting mice displayed dampened insulin-stimulated phosphorylation of insulin receptor (tyr1146) and IRS-1 (tyrosine) along with elevated IRS-1 serine phosphorylation, the effect was augmented by ADH. Alcohol challenge dampened phosphorylation of Akt and GSK-3β, and increased phosphorylation of c-Jun and JNK, the effects were accentuated by ADH. Alcohol challenge promoted ER stress, FK506 binding protein 5 (FKBP5), YAP, apoptosis and ferroptosis, the effects were exaggerated by ADH. Using a short-term ethanol challenge model (3 g/kg, i.p., twice in three days), we found that inhibition of FKBP5-YAP signaling or facilitated ethanol detoxification by Alda-1 alleviated ethanol cardiotoxicity. In vitro study revealed that the ethanol metabolite acetaldehyde evoked cardiac contractile anomalies, lipid peroxidation, and apoptosis, the effects of which were mitigated by Alda-1, inhibition of ER stress, FKBP5 and YAP. These data suggest that facilitated ethanol metabolism via ADH exacerbates alcohol-evoked myocardial remodeling, functional defects, and insulin insensitivity possibly through a FKBP5-YAP-associated regulation of ER stress and ferroptosis.
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Affiliation(s)
- Qi Lu
- Department of Cardiology, Affiliated Hospital of Nantong University, Jiangsu 226001, China.
| | - Xing Qin
- Department of Cardiology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - Chu Chen
- Department of Cardiology, Affiliated Hospital of Nantong University, Jiangsu 226001, China
| | - Wei Yu
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Jie Lin
- Department of Cardiology, Zhongshan Hospital Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
| | - Xiaoyu Liu
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Rui Guo
- College of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health San Antonio, TX 78229, USA
| | - Milad Ashrafizadeh
- Department of Cardiology, Zhongshan Hospital Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; Department of General Surgery and Institute of Precision Diagnosis and Treatment of Digestive System Tumors, Carson International Cancer Center, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518055, China
| | - Ming Yuan
- Department of Cardiology, Xijing Hospital, Air Force Medical University, Xi'an 710032, China.
| | - Jun Ren
- Department of Cardiology, Zhongshan Hospital Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai 200032, China; National Clinical Research Center for Interventional Medicine, Shanghai 200032, China.
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Zhang Y, Zou R, Abudureyimu M, Liu Q, Ma J, Xu H, Yu W, Yang J, Jia J, Qian S, Wang H, Yang Y, Wang X, Fan X, Ren J. Mitochondrial aldehyde dehydrogenase rescues against diabetic cardiomyopathy through GSK3β-mediated preservation of mitochondrial integrity and Parkin-mediated mitophagy. J Mol Cell Biol 2024; 15:mjad056. [PMID: 37771085 PMCID: PMC11193060 DOI: 10.1093/jmcb/mjad056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 04/19/2023] [Accepted: 09/27/2023] [Indexed: 09/30/2023] Open
Abstract
Mitochondrial aldehyde dehydrogenase (ALDH2) offers proven cardiovascular benefit, although its impact on diabetes remains elusive. This study examined the effects of ALDH2 overexpression and knockout on diabetic cardiomyopathy and the mechanism involved with a focus on mitochondrial integrity. Mice challenged with streptozotocin (STZ, 200 mg/kg, via intraperitoneal injection) exhibited pathological alterations, including reduced respiratory exchange ratio, dampened fractional shortening and ejection fraction, increased left ventricular end-systolic and diastolic diameters, cardiac remodeling, cardiomyocyte contractile anomalies, intracellular Ca2+ defects, myocardial ultrastructural injury, oxidative stress, apoptosis, and mitochondrial damage, which were overtly attenuated or accentuated by ALDH2 overexpression or knockout, respectively. Diabetic patients also exhibited reduced plasma ALDH2 activity, cardiac remodeling, and diastolic dysfunction. In addition, STZ challenge altered expression levels of mitochondrial proteins (PGC-1α and UCP2) and Ca2+ regulatory proteins (SERCA, Na+-Ca2+ exchanger, and phospholamban), dampened autophagy and mitophagy (LC3B ratio, TOM20, Parkin, FUNDC1, and BNIP3), disrupted phosphorylation of Akt, GSK3β, and Foxo3a, and elevated PTEN phosphorylation, most of which were reversed or worsened by ALDH2 overexpression or knockout, respectively. Furthermore, the novel ALDH2 activator torezolid, as well as the classical ALDH2 activator Alda-1, protected against STZ- or high glucose-induced in vivo or in vitro cardiac anomalies, which was nullified by inhibition of Akt, GSK3β, Parkin, or mitochondrial coupling. Our data discerned a vital role for ALDH2 in diabetic cardiomyopathy possibly through regulation of Akt and GSK3β activation, Parkin mitophagy, and mitochondrial function.
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Affiliation(s)
- Yingmei Zhang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 710032, China
- National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
| | - Rongjun Zou
- Department of Cardiovascular Surgery, Guangdong Provincial Hospital of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Miyesaier Abudureyimu
- National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
- Cardiovascular Department, Shanghai Xuhui Central Hospital, Fudan University, Shanghai 200031, China
| | - Qiong Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, School of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Jipeng Ma
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - Haixia Xu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 710032, China
- National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
- Department of Cardiology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Wei Yu
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, China
| | - Jianguo Jia
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 710032, China
- National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
| | - Sanli Qian
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 710032, China
- National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
| | - Haichang Wang
- Xi'an International Medical Center Hospital Affiliated to Northwest University, Xi'an 710077, China
| | - Yang Yang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, School of Life Sciences and Medicine, Northwest University, Xi'an 710069, China
| | - Xin Wang
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9GB, UK
| | - Xiaoping Fan
- Department of Cardiovascular Surgery, Guangdong Provincial Hospital of Chinese Medicine, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Jun Ren
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital Fudan University, Shanghai 710032, China
- National Clinical Research Center for Interventional Medicine, Shanghai 200032, China
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Yuan M, Ceylan AF, Gao R, Zhu H, Zhang Y, Ren J. Selective inhibition of the NLRP3 inflammasome protects against acute ethanol-induced cardiotoxicity in an FBXL2-dependent manner. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1972-1986. [PMID: 37994158 PMCID: PMC10753364 DOI: 10.3724/abbs.2023256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/27/2023] [Indexed: 11/24/2023] Open
Abstract
Binge drinking exerts cardiac toxicity through various mechanisms, including oxidative stress and inflammation. NLRP3 inflammasomes possess both pro- and anti-inflammatory properties, although the role of NLRP3 in ethanol-induced cardiotoxicity remains unknown. This study is designed to examine the role of NLRP3 inflammasome in acute ethanol cardiotoxicity and the underlying mechanisms of action. Nine- to twelve-week-old adult male C57BL/6 mice are administered with ethanol (1.5 g/kg, twice daily, i.p.) for 3 days. A cohort of control and ethanol-challenged mice are treated with the NLRP3 inhibitor MCC950 (10 mg/kg/day, i.p., days 1 and 3). Myocardial geometry and function are monitored using echocardiography and cardiomyocyte edge-detection techniques. Levels of NLRP3 inflammasome, mitophagy and apoptosis are evaluated by western blot analysis and immunofluorescence techniques. Acute ethanol challenge results in abnormally higher cardiac systolic function, in conjunction with deteriorated cardiac diastolic function and cardiomyocyte contractile function. Levels of NLRP3 inflammasome and apoptosis are elevated, and mitophagy flux is blocked (elevated Pink1-Parkin and LC3B along with diminished p62 and Rab7) in mice receiving acute ethanol challenge. Although MCC950 does not elicit a notable effect on myocardial function, apoptosis or inflammasome activation in the absence of ethanol exposure, it effectively rescues acute ethanol cardiotoxicity, as manifested by restored myocardial and cardiomyocyte functional homeostasis, suppressed NLRP3 inflammasome activation and apoptosis, and improved mitophagy flux. Our data further suggest that FBXL2, an E3 ubiquitin ligase associated with mitochondrial homeostasis and mitophagy, is destabilized due to proteasomal degradation of caspase-1 by ethanol-induced hyperactivation of NLRP3-caspase-1 inflammasome signaling, resulting in mitochondrial injury and apoptosis. These findings denote a role for NLRP3 inflammasome in acute ethanol exposure-induced cardiotoxicity in an FBXL2-dependent manner and the therapeutic promise of targeting NLRP3 inflammasome for acute ethanol cardiotoxicity.
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Affiliation(s)
- Meng Yuan
- Department of Cardiology and Shanghai Institute of Cardiovascular DiseasesZhongshan HospitalFudan UniversityShanghai200032China
- Clinical Research Center for Interventional MedicineShanghai200032China
| | - Asli F. Ceylan
- Ankara Yildirim Beyazit UniversityFaculty of MedicineDepartment of Medical PharmacologyBilkentAnkaraTurkey
| | - Rifeng Gao
- Department of CardiologyThe Second Affiliated HospitalZhejiang University School of MedicineHangzhou310009China
| | - Hong Zhu
- Translational Medical Center for Stem Cell Therapy & Institutes for Regenerative MedicineShanghai East HospitalTongji University School of MedicineShanghai200123China
| | - Yingmei Zhang
- Department of Cardiology and Shanghai Institute of Cardiovascular DiseasesZhongshan HospitalFudan UniversityShanghai200032China
- Clinical Research Center for Interventional MedicineShanghai200032China
| | - Jun Ren
- Department of Cardiology and Shanghai Institute of Cardiovascular DiseasesZhongshan HospitalFudan UniversityShanghai200032China
- Clinical Research Center for Interventional MedicineShanghai200032China
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5
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Song X, Wei C, Huang H, Cao X, Chen Z, Chen Y, Wu B. Effects of resveratrol on tolerance to ischemia/reperfusion injury in aged male mice: Role of autophagy and apoptosis. Food Sci Nutr 2023; 11:5938-5947. [PMID: 37823125 PMCID: PMC10563695 DOI: 10.1002/fsn3.3525] [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: 08/10/2022] [Revised: 06/02/2023] [Accepted: 06/08/2023] [Indexed: 10/13/2023] Open
Abstract
Aged myocardium is more susceptible to ischemia/reperfusion (I/R) injury. Autophagy and apoptosis play important roles in cardiac I/R injury. However, whether resveratrol can reduce the I/R vulnerability of aged myocardium by regulating apoptosis and autophagy remains unclear. The present study aimed to investigate the effect of resveratrol on the tolerance to I/R injury in aged male mice and to determine the contribution of apoptosis and autophagy. We used aged C57 mice as our research subjects. The hearts of mice were isolated after 6 weeks of intragastric administration with resveratrol and subsequently perfused with Krebs-Henseleit buffer to produce the I/R model. We found that resveratrol alleviated cardiac I/R injury in aged mice, but not in SIRT1+/- mice. Aged mice exhibited decreased LC3 and Beclin1 expressions, which were significantly rescued by resveratrol treatment. In addition, resveratrol decreased the expression of Bax and the activity of Caspase-3, while increasing the expression of Bcl-2 and the activity of SIRT1 in aged mouse hearts. Coimmunoprecipitation assays revealed that resveratrol facilitated the binding of Bax to Bcl-2 and the dissociation of Bcl-2 from Beclin1 in aged mouse myocardium. Conversely, SIRT1 knockout enhanced the formation of the Beclin1/Bcl-2 complex and disrupted the interaction between Bcl-2 and Bax. The above results indicate that resveratrol can reduce the vulnerability of myocardial I/R injury in senile myocardium by inhibiting apoptosis and upregulating autophagy through the SIRT1 signaling pathway.
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Affiliation(s)
- Xiaogang Song
- Key Laboratory of Stem Cells and Gene Drugs of Gansu Province, Department of CardiologyThe 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation ArmyLanzhouChina
| | - Chao Wei
- Department of NeurologyThe First Medical Center of the Chinese People's Liberation Army General HospitalBeijingChina
| | - Hui Huang
- Department of GeriatricsThe 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation ArmyLanzhouChina
| | - Xingdan Cao
- Key Laboratory of Stem Cells and Gene Drugs of Gansu Province, Department of CardiologyThe 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation ArmyLanzhouChina
| | - Ziyi Chen
- Key Laboratory of Stem Cells and Gene Drugs of Gansu Province, Department of CardiologyThe 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation ArmyLanzhouChina
| | - Yongqing Chen
- Department of CardiologyThe Gansu Provincial Central HospitalLanzhouChina
| | - Bing Wu
- Department of GeriatricsThe 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation ArmyLanzhouChina
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Pan G, Roy B, Harding P, Lanigan T, Hilgarth R, Thandavarayan RA, Palaniyandi SS. Effects of intracardiac delivery of aldehyde dehydrogenase 2 gene in myocardial salvage. Gene Ther 2023; 30:115-121. [PMID: 35606494 PMCID: PMC9684354 DOI: 10.1038/s41434-022-00345-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/24/2022] [Accepted: 05/06/2022] [Indexed: 11/09/2022]
Abstract
Intrinsic activity of aldehyde dehydrogenase (ALDH)2, a cardiac mitochondrial enzyme, is vital in detoxifying 4-hydroxy-2-nonenal (4HNE) like cellular reactive carbonyl species (RCS) and thereby conferring cardiac protection against pathological stress. It was also known that a single point mutation (E487K) in ALDH2 (prevalent in East Asians) known as ALDH2*2 reduces its activity intrinsically and was associated with increased cardiovascular diseases. We and others have shown that ALDH2 activity is reduced in several pathologies in WT animals as well. Thus, exogenous augmentation of ALDH2 activity is a good strategy to protect the myocardium from pathologies. In this study, we will test the efficacy of intracardiac injections of the ALDH2 gene in mice. We injected both wild type (WT) and ALDH2*2 knock-in mutant mice with ALDH2 constructs, AAv9-cTNT-hALDH2-HA tag-P2A-eGFP or their control constructs, AAv9-cTNT-eGFP. We found that intracardiac ALDH2 gene transfer increased myocardial levels of ALDH2 compared to GFP alone after 1 and 3 weeks. When we subjected the hearts of these mice to 30 min global ischemia and 90 min reperfusion (I-R) using the Langendorff perfusion system, we found reduced infarct size in the hearts of mice with ALDH2 gene vs GFP alone. A single time injection has shown increased myocardial ALDH2 activity for at least 3 weeks and reduced myocardial 4HNE adducts and infarct size along with increased contractile function of the hearts while subjected to I-R. Thus, ALDH2 overexpression protected the myocardium from I-R injury by reducing 4HNE protein adducts implicating increased 4HNE detoxification by ALDH2. In conclusion, intracardiac ALDH2 gene transfer is an effective strategy to protect the myocardium from pathological insults.
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Affiliation(s)
- Guodong Pan
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI, 48202, USA.,Department of Physiology, Wayne State University, Detroit, MI, 48202, USA
| | - Bipradas Roy
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI, 48202, USA.,Department of Physiology, Wayne State University, Detroit, MI, 48202, USA
| | - Pamela Harding
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI, 48202, USA.,Department of Physiology, Wayne State University, Detroit, MI, 48202, USA
| | - Thomas Lanigan
- Vector Core, Biomedical Research Core Facilities, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Roland Hilgarth
- Vector Core, Biomedical Research Core Facilities, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - Rajarajan A Thandavarayan
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX, 77030, USA
| | - Suresh Selvaraj Palaniyandi
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI, 48202, USA. .,Department of Physiology, Wayne State University, Detroit, MI, 48202, USA.
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Jiang Q, Li X, Chen R, Wang C, Liu X, Wang X. Association of functional variant of aldehyde dehydrogenase 2 with acute myocardial infarction of Chinese patients. BMC Cardiovasc Disord 2022; 22:303. [PMID: 35787671 PMCID: PMC9254420 DOI: 10.1186/s12872-022-02738-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 06/28/2022] [Indexed: 07/31/2024] Open
Abstract
BACKGROUND The variant of ALDH2 was thought to be associated with Acute Myocardial Infarction (AMI) due to the consumption of alcohol. This study focused on how ALDH2 variant acts as an independent risk factor for AMI, regardless of alcohol consumption. METHODS AND RESULTS We used the case-control INTERHEART-China study which took place at 25 centres in 17 cities in mainland China. Cases were patients with AMI and matched by age, sex, and site to controls. Information about alcohol consumption and genotype were collected. We divided cases and controls by alcohol consumption: alcohol intake group and no alcohol intake group. Then, calculated the Odd Ratio (OR) value with confidence interval (CI) at 95% level to find the association between ALDH2 variant and AMI. Results were then adjusted by sex, age, BMI, and other common risk factors of AMI. The study involves a total of 2660 controls and 2322 AMI patients. The no drink intake group showed that there was a correlation between the ALDH2 variant and AMI (OR = 1.236, 95% CI = 1.090-1.401, p = 0.00092). After adjustment of different risk factors this association remained (OR = 1.247, 95% CI = 1.099-1.415, p = 0.00062). Similar results were also obtained from the no alcohol intake group (OR = 1.196, 95% CI = 0.993-1.440, p = 0.05963), however, due to the limited sample size, the result was not significant enough statistically. CONCLUSION From our results, ALDH2 variant is associated with the risk of AMI even in population that has no alcohol consumption. This suggests that ALDH2 variant may act as an independent risk factor for AMI.
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Affiliation(s)
- Qixia Jiang
- Department of Cardiology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoguang Li
- Department of General Surgery, Shanghai Fourth People's Hospital Affiliated to Tongji University School of Medicine, Shanghai, China
| | - Rukun Chen
- Department of Cardiology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chuhong Wang
- National Center for Human Genetic Resources, National Research Institute for Family Planning, Beijing, China
| | - Xin Liu
- National Center for Human Genetic Resources, National Research Institute for Family Planning, Beijing, China. .,Beijing Hypertension League Institute, Beijing, China.
| | - Xingyu Wang
- National Center for Human Genetic Resources, National Research Institute for Family Planning, Beijing, China. .,Beijing Hypertension League Institute, Beijing, China.
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Flores K, Siques P, Brito J, Arribas SM. AMPK and the Challenge of Treating Hypoxic Pulmonary Hypertension. Int J Mol Sci 2022; 23:ijms23116205. [PMID: 35682884 PMCID: PMC9181235 DOI: 10.3390/ijms23116205] [Citation(s) in RCA: 2] [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: 03/29/2022] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 02/01/2023] Open
Abstract
Hypoxic pulmonary hypertension (HPH) is characterized by sustained elevation of pulmonary artery pressure produced by vasoconstriction and hyperproliferative remodeling of the pulmonary artery and subsequent right ventricular hypertrophy (RVH). The search for therapeutic targets for cardiovascular pathophysiology has extended in many directions. However, studies focused on mitigating high-altitude pulmonary hypertension (HAPH) have been rare. Because AMP-activated protein kinase (AMPK) is involved in cardiovascular and metabolic pathology, AMPK is often studied as a potential therapeutic target. AMPK is best characterized as a sensor of cellular energy that can also restore cellular metabolic homeostasis. However, AMPK has been implicated in other pathways with vasculoprotective effects. Notably, cellular metabolic stress increases the intracellular ADP/ATP or AMP/ATP ratio, and AMPK activation restores ATP levels by activating energy-producing catabolic pathways and inhibiting energy-consuming anabolic pathways, such as cell growth and proliferation pathways, promoting cardiovascular protection. Thus, AMPK activation plays an important role in antiproliferative, antihypertrophic and antioxidant pathways in the pulmonary artery in HPH. However, AMPK plays contradictory roles in promoting HPH development. This review describes the main findings related to AMPK participation in HPH and its potential as a therapeutic target. It also extrapolates known AMPK functions to discuss the less-studied HAPH context.
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Affiliation(s)
- Karen Flores
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile; (P.S.); (J.B.)
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile
- Correspondence: ; Tel.: +56-572526392
| | - Patricia Siques
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile; (P.S.); (J.B.)
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile
| | - Julio Brito
- Institute of Health Studies, University Arturo Prat, Av. Arturo Prat 2120, Iquique 1110939, Chile; (P.S.); (J.B.)
- Institute DECIPHER, German-Chilean Institute for Research on Pulmonary Hypoxia and Its Health Sequelae, 20251 Hamburg, Germany and Iquique 1100000, Chile
| | - Silvia M. Arribas
- Department of Physiology, University Autonoma of Madrid, 28049 Madrid, Spain;
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9
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Peng H, Fu S, Wang S, Xu H, Dhanasekaran M, Chen H, Shao C, Yuanzhuo, Ren J. Ablation of FUNDC1-dependent mitophagy renders myocardium resistant to paraquat-induced ferroptosis and contractile dysfunction. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166448. [DOI: 10.1016/j.bbadis.2022.166448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 02/08/2023]
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10
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Aldehyde dehydrogenase 2-associated metabolic abnormalities and cardiovascular diseases: current status, underlying mechanisms, and clinical recommendations. CARDIOLOGY PLUS 2022. [DOI: 10.1097/cp9.0000000000000002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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11
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Chen L, Yin Z, Qin X, Zhu X, Chen X, Ding G, Sun D, Wu NN, Fei J, Bi Y, Zhang J, Bucala R, Ren J, Zheng Q. CD74 ablation rescues type 2 diabetes mellitus-induced cardiac remodeling and contractile dysfunction through pyroptosis-evoked regulation of ferroptosis. Pharmacol Res 2022; 176:106086. [PMID: 35033649 DOI: 10.1016/j.phrs.2022.106086] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 12/16/2021] [Accepted: 01/11/2022] [Indexed: 12/17/2022]
Abstract
Type 2 diabetes mellitus (T2D) contributes to sustained inflammation and myopathic changes in the heart although the precise interplay between the two remains largely unknown. This study evaluated the impact of deficiency in CD74, the cognate receptor for the regulatory cytokine macrophage migration inhibitory factor (MIF), in T2D-induced cardiac remodeling and functional responses, and cell death domains involved. WT and CD74-/- mice were fed a high fat diet (60% calorie from fat) for 8 weeks prior to injection of streptozotocin (STZ, 35 mg/kg, i.p., 3 consecutive days) and were maintained for another 8 weeks. KEGG analysis for differentially expressed genes (DEGs) reported gene ontology term related to ferroptosis in T2D mouse hearts. T2D patients displayed elevated plasma MIF levels. Murine T2D exerted overt global metabolic derangements, cardiac remodeling, contractile dysfunction, apoptosis, pyroptosis, ferroptosis and mitochondrial dysfunction, ablation of CD74 attenuated T2D-induced cardiac remodeling, contractile dysfunction, various forms of cell death and mitochondrial defects without affecting global metabolic defects. CD74 ablation rescued T2D-evoked NLRP3-Caspase1 activation and oxidative stress but not dampened autophagy. In vitro evidence depicted that high glucose/high fat (HGHF) compromised cardiomyocyte function and promoted lipid peroxidation, the effects were ablated by inhibitors of NLRP3, pyroptosis, and ferroptosis but not by the mitochondrial targeted antioxidant mitoQ. Recombinant MIF mimicked HGHF-induced lipid peroxidation, GSH depletion and ferroptosis, the effects of which were reversed by inhibitors of MIF, NLRP3 and pyroptosis. Taken together, these data suggest that CD74 ablation protects against T2D-induced cardiac remodeling and contractile dysfunction through NLRP3/pyroptosis-mediated regulation of ferroptosis.
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MESH Headings
- Adult
- Animals
- Antigens, Differentiation, B-Lymphocyte/genetics
- Cell Line
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Experimental/physiopathology
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Diabetes Mellitus, Type 2/physiopathology
- Female
- Ferroptosis
- Gene Expression
- Histocompatibility Antigens Class II/genetics
- Humans
- Macrophage Migration-Inhibitory Factors/blood
- Male
- Mice, Knockout
- Middle Aged
- Myocardial Contraction
- Myocardium/metabolism
- NLR Family, Pyrin Domain-Containing 3 Protein/antagonists & inhibitors
- Oxidative Stress
- Oxygen Consumption
- Pyroptosis
- Rats
- Ventricular Remodeling
- Mice
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Affiliation(s)
- Lin Chen
- Department of Cardiovascular Surgery, Shenzhen People's Hospital, Shenzhen 518020, Guangdong, China; The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Zhiqiang Yin
- Department of Cardiovascular Surgery, Shenzhen People's Hospital, Shenzhen 518020, Guangdong, China; The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Xing Qin
- Department of Cardiology, Xijing Hospital, The Air Force Military Medical University, Xi'an 710032 China
| | - Xiaoying Zhu
- Department of Cardiovascular Surgery, Shenzhen People's Hospital, Shenzhen 518020, Guangdong, China; The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Xu Chen
- Department of Cardiovascular Surgery, Shenzhen People's Hospital, Shenzhen 518020, Guangdong, China; The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Gangbing Ding
- Department of Cardiovascular Surgery, Shenzhen People's Hospital, Shenzhen 518020, Guangdong, China; The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Dong Sun
- Department of Cardiology, Xijing Hospital, The Air Force Military Medical University, Xi'an 710032 China
| | - Ne N Wu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Juanjuan Fei
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yaguang Bi
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jingjing Zhang
- National Clinical Research Center for Metabolic Diseases, Metabolic Syndrome Research Center, Key Laboratory of Diabetes Immunology, Ministry of Education, and Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan, China
| | - Richard Bucala
- Department of Medicine, Yale School of Medicine, New Haven, CT 06520 USA
| | - Jun Ren
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Laboratory Medicine and Pathology, University of Washington, Seattle 98195, WA, USA.
| | - Qijun Zheng
- Department of Cardiovascular Surgery, Shenzhen People's Hospital, Shenzhen 518020, Guangdong, China; The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China.
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12
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Sergienko NM, Donner DG, Delbridge LMD, McMullen JR, Weeks KL. Protein phosphatase 2A in the healthy and failing heart: New insights and therapeutic opportunities. Cell Signal 2021; 91:110213. [PMID: 34902541 DOI: 10.1016/j.cellsig.2021.110213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 12/02/2021] [Accepted: 12/07/2021] [Indexed: 02/06/2023]
Abstract
Protein phosphatases have emerged as critical regulators of phosphoprotein homeostasis in settings of health and disease. Protein phosphatase 2A (PP2A) encompasses a large subfamily of enzymes that remove phosphate groups from serine/threonine residues within phosphoproteins. The heterogeneity in PP2A structure, which arises from the grouping of different catalytic, scaffolding and regulatory subunit isoforms, creates distinct populations of catalytically active enzymes (i.e. holoenzymes) that localise to different parts of the cell. This structural complexity, combined with other regulatory mechanisms, such as interaction of PP2A heterotrimers with accessory proteins and post-translational modification of the catalytic and/or regulatory subunits, enables PP2A holoenzymes to target phosphoprotein substrates in a highly specific manner. In this review, we summarise the roles of PP2A in cardiac physiology and disease. PP2A modulates numerous processes that are vital for heart function including calcium handling, contractility, β-adrenergic signalling, metabolism and transcription. Dysregulation of PP2A has been observed in human cardiac disease settings, including heart failure and atrial fibrillation. Efforts are underway, particularly in the cancer field, to develop therapeutics targeting PP2A activity. The development of small molecule activators of PP2A (SMAPs) and other compounds that selectively target specific PP2A holoenzymes (e.g. PP2A/B56α and PP2A/B56ε) will improve understanding of the function of different PP2A species in the heart, and may lead to the development of therapeutics for normalising aberrant protein phosphorylation in settings of cardiac remodelling and dysfunction.
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Affiliation(s)
- Nicola M Sergienko
- Baker Heart and Diabetes Institute, Melbourne VIC 3004, Australia; Central Clinical School, Monash University, Clayton VIC 3800, Australia
| | - Daniel G Donner
- Baker Heart and Diabetes Institute, Melbourne VIC 3004, Australia; Baker Department of Cardiometabolic Health, The University of Melbourne, Parkville VIC 3010, Australia
| | - Lea M D Delbridge
- Department of Anatomy and Physiology, The University of Melbourne, Parkville VIC 3010, Australia
| | - Julie R McMullen
- Baker Heart and Diabetes Institute, Melbourne VIC 3004, Australia; Baker Department of Cardiometabolic Health, The University of Melbourne, Parkville VIC 3010, Australia; Department of Physiology and Department of Medicine Alfred Hospital, Monash University, Clayton VIC 3800, Australia; Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora VIC 3086, Australia; Department of Diabetes, Central Clinical School, Monash University, Clayton VIC 3800, Australia.
| | - Kate L Weeks
- Baker Heart and Diabetes Institute, Melbourne VIC 3004, Australia; Department of Anatomy and Physiology, The University of Melbourne, Parkville VIC 3010, Australia; Baker Department of Cardiometabolic Health, The University of Melbourne, Parkville VIC 3010, Australia; Department of Diabetes, Central Clinical School, Monash University, Clayton VIC 3800, Australia.
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13
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Deng H, Yu B, Li Y. Tanshinone IIA alleviates acute ethanol-induced myocardial apoptosis mainly through inhibiting the expression of PDCD4 and activating the PI3K/Akt pathway. Phytother Res 2021; 35:4309-4323. [PMID: 34169595 DOI: 10.1002/ptr.7102] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 02/28/2021] [Accepted: 03/09/2021] [Indexed: 12/26/2022]
Abstract
Myocardial apoptosis contributes to acute ethanol-induced cardiac injury. Improving immoderate apoptosis has become the potential therapeutic strategy for acute ethanol-induced heart damage. Previous studies reported that Tanshinone IIA (Tan IIA), a key ingredient extracted from Salvia miltiorrhiza Bunge, performed an anti-apoptotic role against acute ethanol-related cell damage. In this study, we investigated whether Tan IIA protected the acute ethanol-induced cardiac damage in vivo and in vitro. C57BL/6 mice were treated with acute ethanol and then treated with Tan IIA. The results showed that Tan IIA significantly improved heart function and blocked myocardial apoptosis. Acute ethanol exposure induced H9C2 cells apoptosis. Treatment with Tan IIA abrogated acute ethanol-induced H9C2 cells apoptosis. Mechanistically, Tan IIA inhibited apoptosis by downregulating the programmed cell death protein 4 (PDCD4) expression and activating the phosphoinositide 3-kinase (PI3K)/Akt pathway. Furthermore, PDCD4 overexpression abrogated Tan IIA-mediated anti-apoptotic role and activation on the PI3K/Akt pathway. Interestingly, the PI3K inhibitor (LY294002) application significantly attenuated the main protective effects of Tan IIA. In conclusion, Tan IIA improves acute ethanol-induced myocardial apoptosis mainly through regulating the PDCD4 expression and activating the PI3K/Akt signaling pathway. We provide evidence that Tan IIA is a new treatment approach for acute ethanol-induced heart damage.
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Affiliation(s)
- Hanyu Deng
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Bo Yu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yang Li
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
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14
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Neumann J, Boknik P, Kirchhefer U, Gergs U. The role of PP5 and PP2C in cardiac health and disease. Cell Signal 2021; 85:110035. [PMID: 33964402 DOI: 10.1016/j.cellsig.2021.110035] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/16/2021] [Accepted: 05/03/2021] [Indexed: 02/08/2023]
Abstract
Protein phosphatases are important, for example, as functional antagonists of β-adrenergic stimulation of the mammalian heart. While β-adrenergic stimulations increase the phosphorylation state of regulatory proteins and therefore force of contraction in the heart, these phosphorylations are reversed and thus force is reduced by the activity of protein phosphatases. In this context the role of PP5 and PP2C is starting to unravel. They do not belong to the same family of phosphatases with regard to sequence homology, many similarities with regard to location, activation by lipids and putative substrates have been worked out over the years. We also suggest which pathways for regulation of PP5 and/or PP2C described in other tissues and not yet in the heart might be useful to look for in cardiac tissue. Both phosphatases might play a role in signal transduction of sarcolemmal receptors in the heart. Expression of PP5 and PP2C can be increased by extracellular stimuli in the heart. Because PP5 is overexpressed in failing animal and human hearts, and because overexpression of PP5 or PP2C leads to cardiac hypertrophy and KO of PP5 leads to cardiac hypotrophy, one might argue for a role of PP5 and PP2C in heart failure. Because PP5 and PP2C can reduce, at least in vitro, the phosphorylation state of proteins thought to be relevant for cardiac arrhythmias, a role of these phosphatases for cardiac arrhythmias is also probable. Thus, PP5 and PP2C might be druggable targets to treat important cardiac diseases like heart failure, cardiac hypertrophy and cardiac arrhythmias.
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Affiliation(s)
- Joachim Neumann
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Magdeburger Str. 4, D-06097 Halle, Germany.
| | - Peter Boknik
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Domagkstraße 12, D-48149 Münster, Germany.
| | - Uwe Kirchhefer
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Domagkstraße 12, D-48149 Münster, Germany.
| | - Ulrich Gergs
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Magdeburger Str. 4, D-06097 Halle, Germany.
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15
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Davuluri G, Welch N, Sekar J, Gangadhariah M, Alchirazi KA, Mohan ML, Kumar A, Kant S, Thapaliya S, Stine M, McMullen MR, McCullough RL, Stark GR, Nagy LE, Prasad SVN, Dasarathy S. Activated Protein Phosphatase 2A Disrupts Nutrient Sensing Balance Between Mechanistic Target of Rapamycin Complex 1 and Adenosine Monophosphate-Activated Protein Kinase, Causing Sarcopenia in Alcohol-Associated Liver Disease. Hepatology 2021; 73:1892-1908. [PMID: 32799332 PMCID: PMC8847884 DOI: 10.1002/hep.31524] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/09/2020] [Accepted: 07/29/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Despite the high clinical significance of sarcopenia in alcohol-associated cirrhosis, there are currently no effective therapies because the underlying mechanisms are poorly understood. We determined the mechanisms of ethanol-induced impaired phosphorylation of mechanistic target of rapamycin complex 1 (mTORC1) and adenosine monophosphate-activated protein kinase (AMPK) with consequent dysregulated skeletal muscle protein homeostasis (balance between protein synthesis and breakdown). APPROACH AND RESULTS Differentiated murine myotubes, gastrocnemius muscle from mice with loss and gain of function of regulatory genes following ethanol treatment, and skeletal muscle from patients with alcohol-associated cirrhosis were used. Ethanol increases skeletal muscle autophagy by dephosphorylating mTORC1, circumventing the classical kinase regulation by protein kinase B (Akt). Concurrently and paradoxically, ethanol exposure results in dephosphorylation and inhibition of AMPK, an activator of autophagy and inhibitor of mTORC1 signaling. However, AMPK remains inactive with ethanol exposure despite lower cellular and tissue adenosine triphosphate, indicating a "pseudofed" state. We identified protein phosphatase (PP) 2A as a key mediator of ethanol-induced signaling and functional perturbations using loss and gain of function studies. Ethanol impairs binding of endogenous inhibitor of PP2A to PP2A, resulting in methylation and targeting of PP2A to cause dephosphorylation of mTORC1 and AMPK. Activity of phosphoinositide 3-kinase-γ (PI3Kγ), a negative regulator of PP2A, was decreased in response to ethanol. Ethanol-induced molecular and phenotypic perturbations in wild-type mice were observed in PI3Kγ-/- mice even at baseline. Importantly, overexpressing kinase-active PI3Kγ but not the kinase-dead mutant reversed ethanol-induced molecular perturbations. CONCLUSIONS Our study describes the mechanistic underpinnings for ethanol-mediated dysregulation of protein homeostasis by PP2A that leads to sarcopenia with a potential for therapeutic approaches by targeting the PI3Kγ-PP2A axis.
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Affiliation(s)
- Gangarao Davuluri
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Nicole Welch
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH,Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH
| | - Jinendiran Sekar
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | | | | | - Maradumane L Mohan
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic, Cleveland, OH
| | - Avinash Kumar
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Sashi Kant
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Samjhana Thapaliya
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - McKenzie Stine
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Megan R McMullen
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | | | - George R. Stark
- Department of Cancer Biology, Cleveland Clinic, Cleveland, OH
| | - Laura E. Nagy
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH
| | - Sathyamangla V Naga Prasad
- Department of Cardiovascular and Metabolic Sciences, Cleveland Clinic, Cleveland, OH,Address correspondence to: Srinivasan Dasarathy MD, Gastroenterology and Hepatology, NE4 208 Lerner Research Institute, 9500 Euclid Avenue, Cleveland Clinic, Cleveland, OH 44195, , Tel: 2164442980, Fax 2164453889; Sathyamangla V Naga Prasad PhD, Cardiovascular and Metabolic Sciences, NB50, Lerner Research Institute, 9500 Euclid Avenue, Cleveland Clinic, Cleveland, OH 44195, , Tel: 2164443734, Fax: 2164458204
| | - Srinivasan Dasarathy
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH,Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH,Address correspondence to: Srinivasan Dasarathy MD, Gastroenterology and Hepatology, NE4 208 Lerner Research Institute, 9500 Euclid Avenue, Cleveland Clinic, Cleveland, OH 44195, , Tel: 2164442980, Fax 2164453889; Sathyamangla V Naga Prasad PhD, Cardiovascular and Metabolic Sciences, NB50, Lerner Research Institute, 9500 Euclid Avenue, Cleveland Clinic, Cleveland, OH 44195, , Tel: 2164443734, Fax: 2164458204
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16
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Yang M, Wang S, Fu S, Wu NN, Xu X, Sun S, Zhang Y, Ren J. Deletion of the E3 ubiquitin ligase, Parkin, exacerbates chronic alcohol intake-induced cardiomyopathy through an Ambra1-dependent mechanism. Br J Pharmacol 2021; 178:964-982. [PMID: 33300167 DOI: 10.1111/bph.15340] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 08/17/2020] [Accepted: 09/01/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Chronic alcohol consumption contributes to contractile dysfunction and unfavourable geometric changes in myocardium, accompanied by altered autophagy and disturbed mitochondrial homeostasis. The E3 ubiquitin ligase Parkin encoded by PARK2 gene maintains a fundamental role in regulating mitophagy and mitochondrial homeostasis, although little is known of its role in the aetiology of alcoholic cardiomyopathy. Here we assessed the effects of Parkin deletion in chronic alcohol-evoked cardiotoxicity. EXPERIMENTAL APPROACH Following alcohol (4%) or control diet intake for 8 weeks, adult male wild-type (WT) and PARK2 knockout (Parkin-/- ) mice were examined using echocardiography. Cardiomyocyte mechanical properties, morphology of myocardium, and mitochondrial damage were also evaluated. Autophagy and mitophagy levels were assessed by LC3B and GFP-LC3 puncta, and lysosome-dependent autophagic flux was scrutinized using GFP-mRFP-LC3 puncta and Bafilomycin A1 treatment. KEY RESULTS Chronic alcohol exposure provoked unfavourable geometric changes in myocardium and led to mitochondrial dysfunction and cardiac contractile defects, effects further exacerbated by Parkin knockout. Chronic alcohol exposure provoked autophagy and PINK1/Parkin-mediated mitophagy without affecting lysosome-dependent autophagic flux, the effects of which were diminished by Parkin deletion. Parkin adenovirus infection in neonatal rat cardiomyocytes further increased autophagy and protected against alcohol-induced myocardial injury, effects blocked by siRNA for Ambra1 (Autophagy and Beclin1 regulator 1). Immunofluorescence staining and co-immunoprecipitation assays showed interactions between Parkin and Ambra1. CONCLUSIONS AND IMPLICATIONS Parkin was essential for cardiac homeostasis in alcohol challenge, accompanied by increased autophagy/mitophagy and maintenance of mitochondrial integrity through its interaction with Ambra1.
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Affiliation(s)
- Mingjie Yang
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Fudan University Zhongshan Hospital, Shanghai, China
| | - Shuyi Wang
- Department of Emergency, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shouzhi Fu
- Department of ICU/Emergency Wuhan Third Hospital, Wuhan University, Wuhan, China
| | - Ne N Wu
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Fudan University Zhongshan Hospital, Shanghai, China
| | - Xihui Xu
- Cytokinetics Inc, South San Francisco, California, USA
| | - Shiqun Sun
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Fudan University Zhongshan Hospital, Shanghai, China
| | - Yingmei Zhang
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Fudan University Zhongshan Hospital, Shanghai, China
| | - Jun Ren
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Fudan University Zhongshan Hospital, Shanghai, China
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17
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Li T, Mu N, Yin Y, Yu L, Ma H. Targeting AMP-Activated Protein Kinase in Aging-Related Cardiovascular Diseases. Aging Dis 2020; 11:967-977. [PMID: 32765957 PMCID: PMC7390518 DOI: 10.14336/ad.2019.0901] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 09/01/2019] [Indexed: 12/11/2022] Open
Abstract
Aging is a pivotal risk factor for developing cardiovascular diseases (CVD) due to the lifelong exposure to various risk factors that may affect the heart and vasculature during aging. AMP-activated protein kinase (AMPK), a serine/threonine protein kinase, is a pivotal endogenous energy regulator that protects against various pathological alterations. In this report, we first introduced the protective mechanisms of AMPK signaling in myocardium, such as oxidative stress, apoptosis, inflammation, autophagy and inflammatory response. Next, we introduced the potential correlation between AMPK and cardiac aging. Then, we highlighted the roles of AMPK signaling in cardiovascular diseases, including myocardial ischemia, cardiomyopathy, and heart failure. Lastly, some potential directions and further perspectives were expanded. The information extends our understanding on the protective roles of AMPK in myocardial aging, which may contribute to the design of drug targets and sheds light on potential treatments of AMPK for aging-related CVD.
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Affiliation(s)
- Tian Li
- 1Department of physiology and pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Nan Mu
- 1Department of physiology and pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Yue Yin
- 1Department of physiology and pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Lu Yu
- 2Department of pathology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Heng Ma
- 1Department of physiology and pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
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18
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Molecular Mechanism of HSF1-Upregulated ALDH2 by PKC in Ameliorating Pressure Overload-Induced Heart Failure in Mice. BIOMED RESEARCH INTERNATIONAL 2020; 2020:3481623. [PMID: 32626739 PMCID: PMC7313111 DOI: 10.1155/2020/3481623] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 05/09/2020] [Indexed: 11/18/2022]
Abstract
Evidences abound that HSF1 and ALDH2 are of cardioprotective effect, yet there is still no report on whether HSF1 can regulate ALDH2 to delay the occurrence of heart failure. We first established the pressure overload-induced heart failure model of mice by transverse aortic constriction (TAC) and discovered that, in the forming period of heart failure, changes of HSF1 and ALDH2 expression recorded the consistent trend. When HSF1 was upregulated/downregulated to delay/promote the occurrence of heart failure, PKC and ALDH2 also showed increased/decreased expression. And when ALDH2 was upregulated/downregulated, the role of HSF1 in delaying the occurrence of heart failure strengthened/weakened. Next, we used mechanical stretch to establish a pressure-stimulated myocardial hypertrophy model and discovered an increased expression of both HSF1 and ALDH2. When HSF1 was upregulated/downregulated to increase/decrease the expression of myocardial hypertrophy gene beta-MHC, PKC and ALDH2 recorded an increased/decreased expression. When an inhibitor was used to downregulate the expression of PKC in cardiomyocytes, we found that the role of HSF1 in upregulating ALDH2 beta-MHC weakened. These findings suggest that HSF1 can upregulate the expression of ALDH2 via PKC to promote pressure-stimulated myocardial compensatory hypertrophy, which is an important molecular pathway for HSF1 to ameliorate heart failure.
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19
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Aldehyde Dehydrogenase 2 and Heart Failure. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1193:89-106. [PMID: 31368099 DOI: 10.1007/978-981-13-6260-6_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Heart failure (HF) is a structural or functional cardiac abnormal syndrome characterized with series of symptoms and signs such as breathlessness, fatigue, pulmonary crackles, and peripheral edema. Being a terminal phase of most myocardial lesions, HF has become a leading cause of mobility and mortality worldwide, associated with heavy clinical burden and economic costs affecting over 23 million people [14]. There is an increase to 5.5% with systolic dysfunction and an increase to 36.0% with diastolic dysfunction in people 60 years or older [85]. The costs accompanied with heart failure stand 2-3% of the total healthcare system expenditure in high-income countries and are expected to increase >2-fold in the next 2 decades [34].
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20
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The Role of ALDH2 in Sepsis and the To-Be-Discovered Mechanisms. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1193:175-194. [PMID: 31368104 DOI: 10.1007/978-981-13-6260-6_10] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Sepsis, defined as life-threatening tissue damage and organ dysfunction caused by a dysregulated host response to infection, is a critical disease which imposes global health burden. Sepsis-induced organ dysfunction, including circulatory and cardiac dysfunction, hepatic dysfunction, renal dysfunction, etc., contributes to high mortality and long-term disability of sepsis patients. Altered inflammatory response, ROS and reactive aldehyde stress, mitochondrial dysfunction, and programmed cell death pathways (necrosis, apoptosis, and autophagy) have been demonstrated to play crucial roles in septic organ dysfunction. Unfortunately, except for infection control and supportive therapies, no specific therapy exists for sepsis. New specific therapeutic targets are highly warranted. Emerging studies suggested a role of potential therapeutic target of ALDH2, a tetrameric enzyme located in mitochondria to detoxify aldehydes, in septic organ dysfunction. In this article, we will review the presentations and pathophysiology of septic organ dysfunction, as well as summarize and discuss the recent insights regarding ALDH2 in sepsis.
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Yang L, Wang S, Ma J, Li J, Yang J, Bucala R, Ren J. CD74 knockout attenuates alcohol intake-induced cardiac dysfunction through AMPK-Skp2-mediated regulation of autophagy. Biochim Biophys Acta Mol Basis Dis 2019; 1865:2368-2378. [PMID: 31167126 DOI: 10.1016/j.bbadis.2019.05.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/22/2019] [Accepted: 05/30/2019] [Indexed: 01/06/2023]
Abstract
CD74, a non-polymorphic type II transmembrane glycoprotein and MHC class II chaperone, is the cell surface receptor for the inflammatory cytokine macrophage migration inhibitory factor (MIF) and participates in inflammatory signaling regulation. This study examined the potential role of CD74 in binge drinking-induced cardiac contractile dysfunction. WT and CD74 knockout mice were exposed to ethanol (3 g/kg/d, i.p., for 3 days). Echocardiography, cardiomyocyte function, histological staining and autophagy signaling including AMPK, mTOR, and AMPK downstream signals Skp2 and Sirt1 were evaluated. Our results revealed that ethanol challenge overtly compromised echocardiographic, cardiomyocyte contractile, intracellular Ca2+ and ultrastructural properties along with overt apoptosis, inflammation (elevated MIF, IL-1β and IL-6) and mitochondrial O2- production (p < 0.01), the effect of which was reconciled by CD74 ablation (p < 0.01 vs. ethanol group) with the exception of MIF expression. Ethanol challenge upregulated autophagy (p < 0.001), promoted AMPK phosphorylation and Sirt1 levels (p < 0.003) while suppressing mTOR phosphorylation and Skp2 levels (p < 0.02). These effects were reversed by CD74 ablation. In vitro studies demonstrated that short-term ethanol challenge compromised cardiomyocyte contractile function and facilitated GFP-Puncta formation, which were mitigated by CD74 knockout (p < 0.0001). Moreover, the CD74 ablation-offered beneficial effects against ethanol-induced cardiomyocyte dysfunction, and GFP-Puncta formation were nullified by the AMPK activator AICAR, the Skp2 inhibitor C1 or the Sirt1 activator SRT1720 (p < 0.0001). Taken together, our data revealed that CD74 ablation counteracts acute ethanol challenge-induced myocardial dysfunction, inflammation and apoptosis possibly through an AMPK-mTOR-Skp2-mediated regulation of autophagy.
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Affiliation(s)
- Lifang Yang
- Department of Anesthesiology, Xi'an Children Hospital, Xi'an 710003, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, WY 82071, USA.
| | - Shuyi Wang
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, WY 82071, USA; Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jipeng Ma
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Military Medical University, Xi'an 710032, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, WY 82071, USA
| | - Ji Li
- Department of Physiology and Biophysics, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS 39216, USA
| | - Jian Yang
- Department of Cardiovascular Surgery, Xijing Hospital, The Air Force Military Medical University, Xi'an 710032, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, WY 82071, USA
| | - Richard Bucala
- Department of Medicine, Yale School of Medicine, New Haven, CT 06520, USA
| | - Jun Ren
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming, Laramie, WY 82071, USA; Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
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Xu H, Zhang Y, Ren J. ALDH2 and Stroke: A Systematic Review of the Evidence. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1193:195-210. [PMID: 31368105 DOI: 10.1007/978-981-13-6260-6_11] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cerebral stroke is one of the leading causes of mortality and disability worldwide. The prevalence of cerebral stroke is the result of the synergistic effect of genetic susceptibility and numerous vascular risk factors, including hypertension, diabetes, excessive alcohol intake, obesity, and dyslipidemia. Mitochondrial aldehyde dehydrogenase (ALDH2) is a vital enzyme metabolizing various acetaldehyde and toxic aldehydes. The ALDH2 enzymatic activity is severely decreased in the individuals with ALDH2*2 gene mutation, especially in East Asians. Increasing epidemiological surveys have revealed that ALDH2 genetic polymorphism is closely associated with the increasing incidence of cardiovascular risk factors and cerebral stroke. Evidence from experimental studies has also suggested that ALDH2 facilitates the clearance of reactive aldehydes and reduces the size of cerebral infarct. Therefore, targeting ALDH2 may represent a promising avenue for protection against stroke injury. This review will mainly focus on clinical and epidemiological evidence and the underlying molecular mechanisms involved in the protective effect of ALDH2 in stroke-related injury.
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Affiliation(s)
- Haixia Xu
- Department of Cardiology and Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yingmei Zhang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China.,Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY, USA
| | - Jun Ren
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China. .,Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY, USA.
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Chen CH, Ferreira JCB, Mochly-Rosen D. ALDH2 and Cardiovascular Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1193:53-67. [PMID: 31368097 DOI: 10.1007/978-981-13-6260-6_3] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Aldehyde dehydrogenase 2 (ALDH2) is a non-cytochrome P450 mitochondrial aldehyde oxidizing enzyme. It is best known for its role in the metabolism of acetaldehyde, a common metabolite from alcohol drinking. More evidences have been accumulated in recent years to indicate a greater role of ALDH2 in the metabolism of other endogenous and exogenous aldehydes, especially lipid peroxidation-derived reactive aldehyde under oxidative stress. Many cardiovascular diseases are associated with oxidative stress and mitochondria dysfunction. Considering that an estimated 560 million East Asians carry a common ALDH2 deficient variant which causes the well-known alcohol flushing syndrome due to acetaldehyde accumulation, the importance of understanding the role of ALDH2 in these diseases should be highlighted. There are several unfavorable cardiovascular conditions that are associated with ALDH2 deficiency. This chapter reviews the function of ALDH2 in various pathological conditions of the heart in relation to aldehyde toxicity. It also highlights the importance and clinical implications of interaction between ALDH2 deficiency and alcohol drinking on cardiovascular disease among the East Asians.
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Affiliation(s)
- Che-Hong Chen
- Department of Chemical and Systems Biology, Stanford University, School of Medicine, Stanford, CA, USA
| | - Julio C B Ferreira
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Daria Mochly-Rosen
- Department of Chemical and Systems Biology, Stanford University, School of Medicine, Stanford, CA, USA.
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Mustroph J, Lebek S, Maier LS, Neef S. Mechanisms of cardiac ethanol toxicity and novel treatment options. Pharmacol Ther 2018; 197:1-10. [PMID: 30557629 DOI: 10.1016/j.pharmthera.2018.12.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Ethanol can acutely and chronically alter cardiomyocyte and whole-organ function in the heart. Importantly, ethanol acutely and chronically predisposes to arrhythmias, while chronic abuse can induce heart failure. However, the molecular mechanisms of ethanol toxicity in the heart are incompletely understood. In this review, we summarize the current mechanistic knowledge on cardiac ethanol toxicity, with a focus on druggable pathways. Ethanol effects on excitation-contraction coupling, oxidative stress, apoptosis, and cardiac metabolism, as well as effects of ethanol metabolites will be discussed. Important recent findings have been gained by investigation of acute ethanol effects. These include a renewed focus on reactive oxygen species (ROS) and induction of SR Ca2+ leak by CaMKII-mediated pathways downstream of ROS. Furthermore, a clinical outlook into potential novel treatment options is provided.
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Affiliation(s)
- Julian Mustroph
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
| | - Simon Lebek
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
| | - Lars S Maier
- Department of Internal Medicine II, University Medical Center Regensburg, Germany
| | - Stefan Neef
- Department of Internal Medicine II, University Medical Center Regensburg, Germany.
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Mekheal M, Steiner JL, Lang CH. Acute alcohol prevents the refeeding-induced decrease in autophagy but does not alter the increased protein synthetic response in heart. Alcohol 2018; 73:79-88. [PMID: 30316145 DOI: 10.1016/j.alcohol.2018.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 04/12/2018] [Accepted: 04/13/2018] [Indexed: 02/02/2023]
Abstract
Ethanol produces a state of anabolic resistance in skeletal muscle; however, whether the heart displays a similar defect is unknown. Hence, the purpose of this study was to determine the impact of acute ethanol administration on the major signal transduction pathways in the heart that are responsible for regulating the protein synthetic and degradative response to refeeding. Adult male C57Bl/6 mice were fasted for 12 h. Mice were then either refed normal rodent chow for 30 min or a separate group of mice remained food deprived prior to administration of 3-g/kg ethanol. Cardiac tissue and blood were collected 1 h thereafter and analyzed. Acute ethanol prevented the nutrient-induced stimulation of S6K1 phosphorylation in heart, but did not alter the phosphorylation of S6, eIF4B, and eEF2, known downstream substrates for this kinase. The refeeding-induced redistribution of eIF4E into the active eIF4F complex was also not changed by acute ethanol. Consistent with the above-mentioned changes in signaling proteins, ethanol did not impair the refeeding-induced increase in cardiac protein synthesis. Proteasome activity was not altered by alcohol and/or refeeding. In contrast, ethanol antagonized the refeeding-induced increase in ULK1 phosphorylation and p62 as well as the reduction in LC3B-II and Atg5/12 complex proteins. These data indicate that acute ethanol prevents the normally observed inhibition of autophagy seen after refeeding, while the mTOR-dependent increase in protein synthesis remains largely unaltered by alcohol.
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Gu C, Li T, Jiang S, Yang Z, Lv J, Yi W, Yang Y, Fang M. AMP-activated protein kinase sparks the fire of cardioprotection against myocardial ischemia and cardiac ageing. Ageing Res Rev 2018; 47:168-175. [PMID: 30110651 DOI: 10.1016/j.arr.2018.08.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 06/28/2018] [Accepted: 08/07/2018] [Indexed: 12/12/2022]
Abstract
AMP-activated protein kinase (AMPK) is a pivotal regulator of some endogenous defensive molecules in various pathological processes, particularly myocardial ischemia (MI), a high risk of myocardial infarction. Thereby it is of great significance to explore the inherent mechanism between AMPK and myocardial infarction. In this review, we first introduce the structure and role of AMPK in the heart. Next, we introduce the mechanisms of AMPK in the heart; followed by the energy regulation of AMPK in MI. Lastly, the attention will be expanded to some potential directions and further perspectives. The information compiled here will be helpful for further research and drug design in the future before AMPK might be considered as a therapeutic target of MI.
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Brandt M, Wenzel P. Alcohol puts the heart under pressure: Acetaldehyde activates a localized renin angiotensin aldosterone system within the myocardium in alcoholic cardiomyopathy. Int J Cardiol 2018; 257:220-221. [PMID: 29506696 DOI: 10.1016/j.ijcard.2018.01.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 01/09/2018] [Accepted: 01/11/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Moritz Brandt
- Center for Cardiology- Cardiology I, University Medical Center Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; Center for Thrombosis and Hemostasis Mainz, University Medical Center Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; German Center for Cardiovascular Research (DZHK)- Partner site Rhine-Main, Germany
| | - Philip Wenzel
- Center for Cardiology- Cardiology I, University Medical Center Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; Center for Thrombosis and Hemostasis Mainz, University Medical Center Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany; German Center for Cardiovascular Research (DZHK)- Partner site Rhine-Main, Germany.
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28
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Wang S, Ren J. Role of autophagy and regulatory mechanisms in alcoholic cardiomyopathy. Biochim Biophys Acta Mol Basis Dis 2018; 1864:2003-2009. [PMID: 29555210 DOI: 10.1016/j.bbadis.2018.03.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/11/2018] [Accepted: 03/14/2018] [Indexed: 12/11/2022]
Abstract
Alcoholism is accompanied with a high incidence of cardiac morbidity and mortality due to the development of alcoholic cardiomyopathy, manifested as dilation of one or both ventricles, reduced ventricular wall thickness, myofibrillary disarray, interstitial fibrosis, hypertrophy and contractile dysfunction. Several theories have been postulated for the etiology of alcoholic cardiomyopathy including ethanol/acetaldehyde toxicity, mitochondrial production of reactive oxygen species, oxidative injury, apoptosis, impaired myofilament Ca2+ sensitivity and protein synthesis, altered fatty acid extraction and deposition, as well as accelerated protein catabolism. In particular, buildup of long-lived or dysfunctional organelles has been reported to contribute to cardiac structural and functional damage following alcoholism. Removal of cell debris and defective organelles by autophagy is essential to the maintenance of cardiac homeostasis in physiological and pathological conditions. However, insufficient understanding is currently available with regards to the involvement of autophagy in the pathogenesis of alcoholic cardiomyopathy. This review summarizes the recent findings on the pathophysiological role of dysregulated autophagy in one set and development of alcoholic cardiomyopathy. A thorough understanding of how autophagy is affected in alcoholism, and subsequently, contributes to the pathogenesis of alcoholic heart injury, will offer therapeutic guidance towards the management of alcoholic cardiomyopathy.
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Affiliation(s)
- Shuyi Wang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China; Center for Cardiovascular Research and Alternative Medicine, Biomedical Science Graduate Program, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA
| | - Jun Ren
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China; Center for Cardiovascular Research and Alternative Medicine, Biomedical Science Graduate Program, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA.
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Münzel T, Daiber A. The potential of aldehyde dehydrogenase 2 as a therapeutic target in cardiovascular disease. Expert Opin Ther Targets 2018; 22:217-231. [PMID: 29431026 DOI: 10.1080/14728222.2018.1439922] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Mitochondrial aldehyde dehydrogenase (ALDH-2) plays a major role in the ethanol detoxification pathway by removing acetaldehyde. Therefore, ALDH-2 inhibitors such as disulfiram represent the first therapeutic targeting of ALDH-2 for alcoholism therapy. Areas covered: Recently, ALDH-2 was identified as an essential bioactivating enzyme of the anti-ischemic organic nitrate nitroglycerin, bringing ALDH-2 again into the focus of clinical interest. Mechanistic studies on the nitroglycerin bioactivation process revealed that during bioconversion of nitroglycerin and in the presence of reactive oxygen and nitrogen species the active site thiols of ALDH-2 are oxidized and the enzyme activity is lost. Thus, ALDH-2 activity represents a useful marker for cardiovascular oxidative stress, a concept, which has been meanwhile supported by a number of animal disease models. Mechanistic studies on the protective role of ALDH-2 in different disease processes identified the detoxification of 4-hydroxynonenal by ALDH-2 as a fundamental process of cardiovascular, cerebral and antioxidant protection. Expert opinion: The most recent therapeutic exploitation of ALDH-2 includes activators of the enzyme such as Alda-1 but also cell-based therapies (ALDH-bright cells) that deserve further clinical characterization in the future.
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Affiliation(s)
- Thomas Münzel
- a Center for Cardiology, Cardiology 1 , Medical Center of the Johannes Gutenberg University , Mainz , Germany.,b Center for Thrombosis and Hemostasis (CTH) , Medical Center of the Johannes Gutenberg University , Mainz , Germany.,c Partner Site Rhine-Main , German Center for Cardiovascular Research (DZHK) , Mainz , Germany
| | - Andreas Daiber
- a Center for Cardiology, Cardiology 1 , Medical Center of the Johannes Gutenberg University , Mainz , Germany.,b Center for Thrombosis and Hemostasis (CTH) , Medical Center of the Johannes Gutenberg University , Mainz , Germany.,c Partner Site Rhine-Main , German Center for Cardiovascular Research (DZHK) , Mainz , Germany
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30
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Zhang Y, Ren J. MicroRNA-21: Bridging Binge Drinking and Cardiovascular Health. Alcohol Clin Exp Res 2018; 42:678-681. [PMID: 29315646 DOI: 10.1111/acer.13596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 01/03/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Yingmei Zhang
- Department of Cardiology; Fudan University Zhongshan Hospital; Shanghai China
- Center for Cardiovascular Research and Alternative Medicine; University of Wyoming; Laramie Wyoming
| | - Jun Ren
- Department of Cardiology; Fudan University Zhongshan Hospital; Shanghai China
- Center for Cardiovascular Research and Alternative Medicine; University of Wyoming; Laramie Wyoming
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31
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Pan C, Xing JH, Zhang C, Zhang YM, Zhang LT, Wei SJ, Zhang MX, Wang XP, Yuan QH, Xue L, Wang JL, Cui ZQ, Zhang Y, Xu F, Chen YG. Aldehyde dehydrogenase 2 inhibits inflammatory response and regulates atherosclerotic plaque. Oncotarget 2018; 7:35562-35576. [PMID: 27191745 PMCID: PMC5094945 DOI: 10.18632/oncotarget.9384] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 05/06/2016] [Indexed: 12/23/2022] Open
Abstract
Previous studies demonstrated that aldehyde dehydrogenase 2 (ALDH2) rs671 polymorphism, which eliminates ALDH2 activity down to 1%-6%, is a susceptibility gene for coronary disease. Here we investigated the underlying mechanisms based on our prior clinical and experimental studies. Male apoE-/- mice were transfected with GFP, ALDH2-overexpression and ALDH2-RNAi lentivirus respectively (n=20 each) after constrictive collars were placed around the right common carotid arteries. Consequently, ALDH2 gene silencing led to an increased en face plaque area, more unstable plaque with heavier accumulation of lipids, more macrophages, less smooth muscle cells and collagen, which were associated with aggravated inflammation. However, ALDH2 overexpression displayed opposing effects. We also found that ALDH2 activity decreased in atherosclerotic plaques of human and aged apoE-/- mice. Moreover, in vitro experiments with human umbilical vein endothelial cells further illustrated that, inhibition of ALDH2 activity resulted in elevating inflammatory molecules, an increase of nuclear translocation of NF-κB, and enhanced phosphorylation of NF-κB p65, AP-1 c-Jun, Jun-N terminal kinase and p38 MAPK, while ALDH2 activation could trigger contrary effects. These findings suggested that ALDH2 can influence plaque development and vulnerability, and inflammation via MAPK, NF-κB and AP-1 signaling pathways.
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Affiliation(s)
- Chang Pan
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Jun-Hui Xing
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Cheng Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Department of Cardiology, Qilu Hospital, Shandong University, Ji'nan, China
| | - Ying-Mei Zhang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lue-Tao Zhang
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Shu-Jian Wei
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Ming-Xiang Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China
| | - Xu-Ping Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China
| | - Qiu-Huan Yuan
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Li Xue
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Jia-Li Wang
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Zhao-Qiang Cui
- Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China
| | - Yun Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Department of Cardiology, Qilu Hospital, Shandong University, Ji'nan, China
| | - Feng Xu
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
| | - Yu-Guo Chen
- Department of Emergency and Chest Pain Center, Qilu Hospital, Shandong University, Ji'nan, China.,Key Laboratory of Cardiovascular Remodeling and Function Research, Ministry of Education and Ministry of Public Health of People's Republic of China, Qilu Hospital, Shandong University, Ji'nan, China.,Institute of Emergency and Critical Care Medicine, Qilu Hospital, Shandong University, Ji'nan, China.,The Key Laboratory of Emergency and Critical Care Medicine Affiliated to Health Commission of Shandong Province, Qilu Hospital, Shandong University, Ji'nan, China
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Abstract
Owing to its acute psychotropic effects, ethanol is the most frequently consumed toxic agent worldwide. However, excessive alcohol intake results in an array of health, social, and economic consequences, which are related to its property as an addictive substance. It has been well established that exposure to high levels of alcohol for a long period leads to the onset and progression of nonischemic cardiomyopathy through direct toxic mechanisms of ethanol and its metabolite, acetaldehyde. Excessive alcohol ingestion causes myocardial damage including disruptions of the myofibrillar architecture and is associated with reduced myocardial contractility and decreased ejection volumes. Key features of alcoholic cardiomyopathy are cardiac hypertrophy and ventricular dilatation, and the disease is manifested mainly as cardiomegaly, congestive heart failure, and even cardiac death. Mechanisms that have been postulated to underlie the pathogenesis of alcoholic cardiomyopathy include apoptosis, mitochondrial alterations, acetaldehyde protein adduct formation, oxidative stress, and imbalances in fatty acid metabolism. In the following, we give a brief overview of the molecular effects of ethanol-metabolizing enzymes and their impact on myocardial signal transduction pathways.
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Ying C, Liu T, Ling H, Cheng M, Zhou X, Wang S, Mao Y, Chen L, Zhang R, Li W. Glucose variability aggravates cardiac fibrosis by altering AKT signalling path. Diab Vasc Dis Res 2017; 14:327-335. [PMID: 28301953 DOI: 10.1177/1479164117698917] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE To study the effect of blood glucose variability on cardiac fibrosis and its mechanism in a model of diabetic cardiomyopathy. METHODS A total of 45 Sprague Dawley rats were randomly divided into three groups: control, control diabetes mellitus and fluctuated blood glucose groups. Fluctuated blood glucose was induced by daily subcutaneous insulin and intraperitoneal glucose injections at different time points. Blood lipids and glycosylated haemoglobin A1c were assessed. Super oxide dismutase activity and malondialdehyde level in rat heart homogenates were determined by assay kit. Structural cardiac tissue changes were observed by haematoxylin and eosin staining and Masson's trichrome staining. Collagen type 3, fibronectin, phosphorylated Ser/Thr protein kinase, phosphorylated glycogen synthase kinase-3 beta, glycogen synthase kinase-3 beta, nuclear factor kappa-light-chain-enhancer of activated B cells, cleaved-cysteinyl aspartate-specific proteinase-3 (caspase-3) and tumour necrosis factor-α levels were determined by western blot. RESULTS Compared with the control group, cardiac fibrosis and oxidative stress in heart tissue were aggravated in diabetic rats, which were more pronounced in glucose variability rats. However, the expression levels of AKT and glycogen synthase kinase-3 beta were not significantly different in three groups, but the expression levels of phosphorylated Ser/Thr protein kinase and phosphorylated glycogen synthase kinase-3 beta were significantly decreased in the control diabetes mellitus and fluctuated blood glucose groups compared to control group, and levels in the fluctuated blood glucose group were significantly less than in the control diabetes mellitus group. In addition, the expression levels of nuclear factor kappa B and caspase-3 in both the control diabetes mellitus and fluctuated blood glucose groups were higher than in the control group, with the highest levels measured in the fluctuated blood glucose group. CONCLUSION Blood glucose variability can aggravate heart tissue fibrosis, possibly involving oxidative stress by inhibiting AKT signalling path.
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Affiliation(s)
- Changjiang Ying
- 1 Department of Endocrinology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Ting Liu
- 2 The Graduate School, Xuzhou Medical University, Xuzhou, China
| | - Hongwei Ling
- 1 Department of Endocrinology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Mingyue Cheng
- 3 Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiaoyan Zhou
- 4 Laboratory of Morphology, Xuzhou Medical University, Xuzhou, China
| | - Shanshan Wang
- 2 The Graduate School, Xuzhou Medical University, Xuzhou, China
| | - Yizhen Mao
- 2 The Graduate School, Xuzhou Medical University, Xuzhou, China
| | - Lei Chen
- 2 The Graduate School, Xuzhou Medical University, Xuzhou, China
| | | | - Wei Li
- 1 Department of Endocrinology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Steiner JL, Lang CH. Etiology of alcoholic cardiomyopathy: Mitochondria, oxidative stress and apoptosis. Int J Biochem Cell Biol 2017; 89:125-135. [PMID: 28606389 DOI: 10.1016/j.biocel.2017.06.009] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 12/16/2022]
Abstract
Putative mechanisms leading to the development of alcoholic cardiomyopathy (ACM) include the interrelated cellular processes of mitochondria metabolism, oxidative stress and apoptosis. As mitochondria fuel the constant energy demands of this continually contracting tissue, it is not surprising that alcohol-induced molecular changes in this organelle contribute to cardiac dysfunction and ACM. As the causal relationship of these processes with ACM has already been established, the primary objective of this review is to provide an update of the experimental findings to more completely understand the aforementioned mechanisms. Accordingly, recent data indicate that alcohol impairs mitochondria function assessed by membrane potential and respiratory chain activity. Indictors of oxidative stress including superoxide dismutase, glutathione metabolites and malondialdehyde are also adversely affected by alcohol oftentimes in a sex-dependent manner. Additionally, myocardial apoptosis is increased based on assessment of TUNEL staining and caspase activity. Recent work has also emerged linking alcohol-induced oxidative stress with apoptosis providing new insight on the codependence of these interrelated mechanisms in ACM. Attention is also given to methodological differences including the dose of alcohol, experimental model system and the use of males versus females to highlight inconsistencies and areas that would benefit from establishment of a consistent model.
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Affiliation(s)
- Jennifer L Steiner
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, United States.
| | - Charles H Lang
- Department of Cellular and Molecular Physiology, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, United States.
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Sun X, Zhu H, Dong Z, Liu X, Ma X, Han S, Lu F, Wang P, Qian S, Wang C, Shen C, Zhao X, Zou Y, Ge J, Sun A. Mitochondrial aldehyde dehydrogenase-2 deficiency compromises therapeutic effect of ALDH bright cell on peripheral ischemia. Redox Biol 2017; 13:196-206. [PMID: 28582728 PMCID: PMC5458766 DOI: 10.1016/j.redox.2017.05.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 05/16/2017] [Accepted: 05/24/2017] [Indexed: 01/07/2023] Open
Abstract
The autologous ALDH bright (ALDHbr) cell therapy for ischemic injury is clinically safe and effective, while the underlying mechanism remains elusive. Here, we demonstrated that the glycolysis dominant metabolism of ALDHbr cells is permissive to restore blood flow in an ischemic hind limb model compared with bone marrow mononuclear cells (BMNCs). PCR array analysis showed overtly elevated Aldh2 expression of ALDHbr cells following hypoxic challenge. Notably, ALDHbr cells therapy induced blood flow recovery in this model was reduced in case of ALDH2 deficiency. Moreover, significantly reduced glycolysis flux and increased reactive oxygen species (ROS) levels were detected in ALDHbr cell from Aldh2-/- mice. Compromised effect on blood flow recovery was also noticed post transplanting the human ALDHbr cell from ALDH2 deficient patients (GA or AA genotypes) in this ischemic hindlimb mice model. Taken together, our findings illustrate the indispensable role of ALDH2 in maintaining glycolysis dominant metabolism of ALDHbr cell and advocate that patient's Aldh2 genotype is a prerequisite for the efficacy of ALDHbr cell therapy for peripheral ischemia.
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Affiliation(s)
- Xiaolei Sun
- Institute of Biomedical Science, Fudan University, Shanghai 200032, China
| | - Hong Zhu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Zhen Dong
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Xiangwei Liu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Xin Ma
- Institute of Biomedical Science, Fudan University, Shanghai 200032, China
| | - Shasha Han
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Fei Lu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Peng Wang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Sanli Qian
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Cong Wang
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Cheng Shen
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Xiaona Zhao
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Yunzeng Zou
- Institute of Biomedical Science, Fudan University, Shanghai 200032, China; Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Junbo Ge
- Institute of Biomedical Science, Fudan University, Shanghai 200032, China; Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China
| | - Aijun Sun
- Institute of Biomedical Science, Fudan University, Shanghai 200032, China; Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Shanghai 200032, China.
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Nuclear AMPK regulated CARM1 stabilization impacts autophagy in aged heart. Biochem Biophys Res Commun 2017; 486:398-405. [PMID: 28315332 DOI: 10.1016/j.bbrc.2017.03.053] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 03/13/2017] [Indexed: 12/27/2022]
Abstract
Senescence-associated autophagy downregulation leads to cardiomyocyte dysfunction. Coactivator-associated arginine methyltransferase 1 (CARM1) participates in many cellular processes, including autophagy in mammals. However, the effect of CARM1 in aging-related cardiac autophagy decline remains undefined. Moreover, AMP-activated protein kinase (AMPK) is a key regulator in metabolism and autophagy, however, the role of nuclear AMPK in autophagy outcome in aged hearts still unclear. Hers we identify the correlation between nuclear AMPK and CARM1 in aging heart. We found that fasting could promote autophagy in young hearts but not in aged hearts. The CARM1 stabilization is markedly decrease in aged hearts, which impaired nucleus TFEB-CARM1 complex and autophagy flux. Further, S-phase kinase-associated protein 2(SKP2), responsible for CARM1 degradation, was increased in aged hearts. We further validated that AMPK dependent FoxO3 phosphorylation was markedly reduced in nucleus, the decreased nuclear AMPK-FoxO3 activity fails to suppress SKP2-E3 ubiquitin ligase. This loss of repression leads to The CARM1 level and autophagy in aged hearts could be restored through AMPK activation. Taken together, AMPK deficiency results in nuclear CARM1 decrease mediated in part by SKP2, contributing to autophagy dysfunction in aged hearts. Our results identified nuclear AMPK controlled CARM1 stabilization as a new actor that regulates cardiac autophagy.
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Wu B, Yu L, Wang Y, Wang H, Li C, Yin Y, Yang J, Wang Z, Zheng Q, Ma H. Aldehyde dehydrogenase 2 activation in aged heart improves the autophagy by reducing the carbonyl modification on SIRT1. Oncotarget 2016; 7:2175-88. [PMID: 26741505 PMCID: PMC4823027 DOI: 10.18632/oncotarget.6814] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 12/24/2015] [Indexed: 12/31/2022] Open
Abstract
Cardiac aging is characterized by accumulation of damaged proteins and decline of autophagic efficiency. Here, by forestalling SIRT1 carbonylated inactivation in aged heart, we determined the benefits of activation of aldehyde dehydrogenase 2 (ALDH2) on the autophagy. In this study, the ALDH2 KO mice progressively developed age-related heart dysfunction and showed reduction in the life span, which strongly suggests that ALDH2 ablation leads to cardiac aging. What's more, aged hearts displayed a significant decrease ALDH2 activity, resulting in accumulation of 4-HNE-protein adducts and protein carbonyls, impairment in the autophagy flux, and, consequently, deteriorated cardiac function after starvation. Sustained Alda-1 (selective ALDH2 activator) treatment increased cardiac ALDH2 activity and abrogated these effects. Using SIRT1 deficient heterozygous (Sirt1+/−) mice, we found that SIRT1 was necessary for ALDH2 activation-induced autophagy. We further demonstrated that ALDH2 activation attenuated SIRT1 carbonylation and improved SIRT1 activity, thereby increasing the deacetylation of nuclear LC3 and FoxO1. Sequentially, ALDH2 enhanced SIRT1 regulates LC3-Atg7 interaction and FoxO1 increased Rab7 expression, which were both necessary and sufficient for restoring autophagy flux. These results highlight that both accumulation of proteotoxic carbonyl stress linkage with autophagy decline contribute to heart senescence. ALDH2 activation is adequate to improve the autophagy flux by reducing the carbonyl modification on SIRT1, which in turn plays an important role in maintaining cardiac health during aging.
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Affiliation(s)
- Bing Wu
- Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Lu Yu
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yishi Wang
- Department of Physiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China
| | - Hongtao Wang
- Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Chen Li
- Department of Physiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China
| | - Yue Yin
- Department of Physiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China.,Department of Pathophysiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China
| | - Jingrun Yang
- Department of Physiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China
| | - Zhifa Wang
- Department of Physiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China
| | - Qiangsun Zheng
- Department of Cardiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Heng Ma
- Department of Physiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China.,Department of Pathophysiology, School of Basic medicine, Fourth Military Medical University, Xi'an, China
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Activation of ALDH2 with Low Concentration of Ethanol Attenuates Myocardial Ischemia/Reperfusion Injury in Diabetes Rat Model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:6190504. [PMID: 27829984 PMCID: PMC5088338 DOI: 10.1155/2016/6190504] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/09/2016] [Accepted: 08/24/2016] [Indexed: 12/12/2022]
Abstract
The aim of this paper is to observe the change of mitochondrial aldehyde dehydrogenase 2 (ALDH2) when diabetes mellitus (DM) rat heart was subjected to ischemia/reperfusion (I/R) intervention and analyze its underlying mechanisms. DM rat hearts were subjected to 30 min regional ischemia and 120 min reperfusion in vitro and pretreated with ALDH2 activator ethanol (EtOH); cardiomyocyte in high glucose (HG) condition was pretreated with ALDH2 activator Alda-1. In control I/R group, myocardial tissue structure collapse appeared. Compared with control I/R group, left ventricular parameters, SOD activity, the level of Bcl-2/Bax mRNA, ALDH2 mRNA, and protein expressions were decreased and LDH and MDA contents were increased, meanwhile the aggravation of myocardial structure injury in DM I/R group. When DM I/R rats were pretreated with EtOH, left ventricular parameters, SOD, Bcl-2/Bax, and ALDH2 expression were increased; LDH, MDA, and myocardial structure injury were attenuated. Compared with DM + EtOH I/R group, cyanamide (ALDH2 nonspecific blocker), atractyloside (mitoPTP opener), and wortmannin (PI3K inhibitor) groups all decreased left ventricular parameters, SOD, Bcl-2/Bax, and ALDH2 and increased LDH, MDA, and myocardial injury. When cardiomyocyte was under HG condition, CCK-8 activity and ALDH2 protein expression were decreased. Alda-1 increased CCK-8 and ALDH2. Our findings suggested enhanced ALDH2 expression in diabetic I/R rats played the cardioprotective role, maybe through activating PI3K and inhibiting mitoPTP opening.
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NOX2 amplifies acetaldehyde-mediated cardiomyocyte mitochondrial dysfunction in alcoholic cardiomyopathy. Sci Rep 2016; 6:32554. [PMID: 27624556 PMCID: PMC5021994 DOI: 10.1038/srep32554] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/09/2016] [Indexed: 01/05/2023] Open
Abstract
Alcoholic cardiomyopathy (ACM) resulting from excess alcohol consumption is an important cause of heart failure (HF). Although it is assumed that the cardiotoxicity of the ethanol (EtOH)-metabolite acetaldehyde (ACA) is central for its development and progression, the exact mechanisms remain obscure. Murine cardiomyocytes (CMs) exposed to ACA or EtOH showed increased superoxide (O2•−) levels and decreased mitochondrial polarization, both being normalized by NADPH oxidase (NOX) inhibition. C57BL/6 mice and mice deficient for the ACA-degrading enzyme mitochondrial aldehyde dehydrogenase (ALDH-2−/−) were fed a 2% EtOH diet for 5 weeks creating an ACA-overload. 2% EtOH-fed ALDH-2−/− mice exhibited a decreased cardiac function, increased heart-to-body and lung-to-body weight ratios, increased cardiac levels of the lipid peroxidation product malondialdehyde (MDA) as well as increased NOX activity and NOX2/glycoprotein 91phox (NOX2/gp91phox) subunit expression compared to 2% EtOH-fed C57BL/6 mice. Echocardiography revealed that ALDH-2−/−/gp91phox−/− mice were protected from ACA-overload-induced HF after 5 weeks of 2% EtOH-diet, demonstrating that NOX2-derived O2•− contributes to the development of ACM. Translated to human pathophysiology, we found increased gp91phox expression in endomyocardial biopsies of ACM patients. In conclusion, ACM is promoted by ACA-driven mitochondrial dysfunction and can be improved by ablation of NOX2/gp91phox. NOX2/gp91phox therefore might be a potential pharmacological target to treat ACM.
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Yang L, Wang J, Yang J, Schamber R, Hu N, Nair S, Xiong L, Ren J. Antioxidant metallothionein alleviates endoplasmic reticulum stress-induced myocardial apoptosis and contractile dysfunction. Free Radic Res 2016; 49:1187-98. [PMID: 25968954 DOI: 10.3109/10715762.2015.1013952] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AIMS Endoplasmic reticulum (ER) stress exerts myocardial oxidative stress, apoptosis, and contractile anomalies, although the precise interplay between ER stress and apoptosis remains elusive. This study was designed to examine the impact of the cysteine-rich free radical scavenger metallothionein on ER stress-induced myocardial contractile defect and underlying mechanisms. METHODS AND RESULTS Wild-type friendly virus B and transgenic mice with cardiac-specific overexpression of metallothionein were challenged with the ER stress inducer tunicamycin (1 mg/kg, intraperitoneal, 48 h) prior to the assessment of myocardial function, oxidative stress, and apoptosis. Our results revealed that tunicamycin promoted cardiac remodeling (enlarged left ventricular end systolic/diastolic diameters with little changes in left ventricular wall thickness), suppressed fractional shortening and cardiomyocyte contractile function, elevated resting Ca(2+), decreased stimulated Ca(2+) release, prolonged intracellular Ca(2+) clearance, and downregulated sarco(endo)plasmic reticulum Ca(2+)-ATPase levels, the effects of which were negated by metallothionein. Treatment with tunicamycin caused cardiomyocyte mitochondrial injury, as evidenced by decreased mitochondrial membrane potential (∆Ѱm, assessed by JC-1 staining), the effect of which was negated by the antioxidant. Moreover, tunicamycin challenge dramatically facilitated myocardial apoptosis as manifested by increased Bax, caspase 9, and caspase 12 protein levels, as well as elevated caspase 3 activity. Interestingly, metallothionein transgene significantly alleviated tunicamycin-induced myocardial apoptosis. CONCLUSION Taken together, our data favor a beneficial effect of metallothionein against ER stress-induced cardiac dysfunction possibly associated with attenuation of myocardial apoptosis.
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Affiliation(s)
- L Yang
- a Department of Anesthesiology , Xijing Hospital, the Fourth Military Medical University , Xi'an , P. R. China
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Ganesan M, Natarajan SK, Zhang J, Mott JL, Poluektova LI, McVicker BL, Kharbanda KK, Tuma DJ, Osna NA. Role of apoptotic hepatocytes in HCV dissemination: regulation by acetaldehyde. Am J Physiol Gastrointest Liver Physiol 2016; 310:G930-40. [PMID: 27056722 PMCID: PMC6842882 DOI: 10.1152/ajpgi.00021.2016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 03/31/2016] [Indexed: 02/08/2023]
Abstract
Alcohol consumption exacerbates hepatitis C virus (HCV) pathogenesis and promotes disease progression, although the mechanisms are not quite clear. We have previously observed that acetaldehyde (Ach) continuously produced by the acetaldehyde-generating system (AGS), temporarily enhanced HCV RNA levels, followed by a decrease to normal or lower levels, which corresponded to apoptosis induction. Here, we studied whether Ach-induced apoptosis caused depletion of HCV-infected cells and what role apoptotic bodies (AB) play in HCV-alcohol crosstalk. In liver cells exposed to AGS, we observed the induction of miR-122 and miR-34a. As miR-34a has been associated with apoptotic signaling and miR-122 with HCV replication, these findings may suggest that cells with intensive viral replication undergo apoptosis. Furthermore, when AGS-induced apoptosis was blocked by a pan-caspase inhibitor, the expression of HCV RNA was not changed. AB from HCV-infected cells contained HCV core protein and the assembled HCV particle that infect intact hepatocytes, thereby promoting the spread of infection. In addition, AB are captured by macrophages to switch their cytokine profile to the proinflammatory one. Macrophages exposed to HCV(+) AB expressed more IL-1β, IL-18, IL-6, and IL-10 mRNAs compared with those exposed to HCV(-) AB. The generation of AB from AGS-treated HCV-infected cells even enhanced the induction of aforementioned cytokines. We conclude that HCV and alcohol metabolites trigger the formation of AB containing HCV particles. The consequent spread of HCV to neighboring hepatocytes via infected AB, as well as the induction of liver inflammation by AB-mediated macrophage activation potentially exacerbate the HCV infection course by alcohol and worsen disease progression.
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Affiliation(s)
- Murali Ganesan
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Sathish Kumar Natarajan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Jinjin Zhang
- School of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska; and
| | - Justin L Mott
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | | | - Benita L McVicker
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kusum K Kharbanda
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Dean J Tuma
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Natalia A Osna
- Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska;
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Ge W, Yuan M, Ceylan AF, Wang X, Ren J. Mitochondrial aldehyde dehydrogenase protects against doxorubicin cardiotoxicity through a transient receptor potential channel vanilloid 1-mediated mechanism. Biochim Biophys Acta Mol Basis Dis 2015; 1862:622-634. [PMID: 26692169 DOI: 10.1016/j.bbadis.2015.12.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Revised: 11/25/2015] [Accepted: 12/11/2015] [Indexed: 12/25/2022]
Abstract
Cardiotoxicity is one of the major life-threatening effects encountered in cancer chemotherapy with doxorubicin and other anthracyclines. Mitochondrial aldehyde dehydrogenase (ALDH2) may alleviate doxorubicin toxicity although the mechanism remains elusive. This study was designed to evaluate the impact of ALDH2 overexpression on doxorubicin-induced myocardial damage with a focus on mitochondrial injury. Wild-type (WT) and transgenic mice overexpressing ALDH2 driven by chicken β-actin promoter were challenged with doxorubicin (15mg/kg, single i.p. injection, for 6days) and cardiac mechanical function was assessed using the echocardiographic and IonOptix systems. Western blot analysis was used to evaluate intracellular Ca(2+) regulatory and mitochondrial proteins, PKA and its downstream signal eNOS. Doxorubicin challenge altered cardiac geometry and function evidenced by enlarged left ventricular end systolic and diastolic diameters, decreased factional shortening, cell shortening and intracellular Ca(2+) rise, prolonged relengthening and intracellular Ca(2+) decay, the effects of which were attenuated by ALDH2. Doxorubicin challenge compromised mitochondrial integrity and upregulated 4-HNE and UCP-2 levels while downregulating levels of TRPV1, SERCA2a and PGC-1α, the effects of which were alleviated by ALDH2. Doxorubicin-induced cardiac functional defect and apoptosis were reversed by the TRPV1 agonist SA13353 and the ALDH-2 agonist Alda-1 whereas the TRPV1 antagonist capsazepine nullified ALDH2/Alda-1-induced protection. Doxorubicin suppressed phosphorylation of PKA and eNOS, the effect of which was reversed by ALDH2. Moreover, 4-HNE mimicked doxorubicin-induced cardiomyocyte anomalies, the effect of which was ablated by SA13353. Taken together, our results suggested that ALDH2 may rescue against doxorubicin cardiac toxicity possibly through a TRPV1-mediated protection of mitochondrial integrity.
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Affiliation(s)
- Wei Ge
- Department of Geriatrics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA
| | - Ming Yuan
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Asli F Ceylan
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA
| | - Xiaoming Wang
- Department of Geriatrics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China.
| | - Jun Ren
- Department of Geriatrics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA; Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
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Daiber A, Münzel T. Organic Nitrate Therapy, Nitrate Tolerance, and Nitrate-Induced Endothelial Dysfunction: Emphasis on Redox Biology and Oxidative Stress. Antioxid Redox Signal 2015; 23:899-942. [PMID: 26261901 PMCID: PMC4752190 DOI: 10.1089/ars.2015.6376] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Organic nitrates, such as nitroglycerin (GTN), isosorbide-5-mononitrate and isosorbide dinitrate, and pentaerithrityl tetranitrate (PETN), when given acutely, have potent vasodilator effects improving symptoms in patients with acute and chronic congestive heart failure, stable coronary artery disease, acute coronary syndromes, or arterial hypertension. The mechanisms underlying vasodilation include the release of •NO or a related compound in response to intracellular bioactivation (for GTN, the mitochondrial aldehyde dehydrogenase [ALDH-2]) and activation of the enzyme, soluble guanylyl cyclase. Increasing cyclic guanosine-3',-5'-monophosphate (cGMP) levels lead to an activation of the cGMP-dependent kinase I, thereby causing the relaxation of the vascular smooth muscle by decreasing intracellular calcium concentrations. The hemodynamic and anti-ischemic effects of organic nitrates are rapidly lost upon long-term (low-dose) administration due to the rapid development of tolerance and endothelial dysfunction, which is in most cases linked to increased intracellular oxidative stress. Enzymatic sources of reactive oxygen species under nitrate therapy include mitochondria, NADPH oxidases, and an uncoupled •NO synthase. Acute high-dose challenges with organic nitrates cause a similar loss of potency (tachyphylaxis), but with distinct pathomechanism. The differences among organic nitrates are highlighted regarding their potency to induce oxidative stress and subsequent tolerance and endothelial dysfunction. We also address pleiotropic effects of organic nitrates, for example, their capacity to stimulate antioxidant pathways like those demonstrated for PETN, all of which may prevent adverse effects in response to long-term therapy. Based on these considerations, we will discuss and present some preclinical data on how the nitrate of the future should be designed.
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Affiliation(s)
- Andreas Daiber
- The 2nd Medical Clinic, Medical Center of the Johannes Gutenberg University , Mainz, Germany
| | - Thomas Münzel
- The 2nd Medical Clinic, Medical Center of the Johannes Gutenberg University , Mainz, Germany
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Protective role of ALDH2 against acetaldehyde-derived DNA damage in oesophageal squamous epithelium. Sci Rep 2015; 5:14142. [PMID: 26374466 PMCID: PMC4570974 DOI: 10.1038/srep14142] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 08/11/2015] [Indexed: 12/14/2022] Open
Abstract
Acetaldehyde is an ethanol-derived definite carcinogen that causes oesophageal squamous cell carcinoma (ESCC). Aldehyde dehydrogenase 2 (ALDH2) is a key enzyme that eliminates acetaldehyde, and impairment of ALDH2 increases the risk of ESCC. ALDH2 is produced in various tissues including the liver, heart, and kidney, but the generation and functional roles of ALDH2 in the oesophagus remain elusive. Here, we report that ethanol drinking increased ALDH2 production in the oesophagus of wild-type mice. Notably, levels of acetaldehyde-derived DNA damage represented by N2-ethylidene-2′-deoxyguanosine were higher in the oesophagus of Aldh2-knockout mice than in wild-type mice upon ethanol consumption. In vitro experiments revealed that acetaldehyde induced ALDH2 production in both mouse and human oesophageal keratinocytes. Furthermore, the N2-ethylidene-2′-deoxyguanosine levels increased in both Aldh2-knockout mouse keratinocytes and ALDH2-knockdown human keratinocytes treated with acetaldehyde. Conversely, forced production of ALDH2 sharply diminished the N2-ethylidene-2′-deoxyguanosine levels. Our findings provide new insight into the preventive role of oesophageal ALDH2 against acetaldehyde-derived DNA damage.
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Estrogen modulation of the ethanol-evoked myocardial oxidative stress and dysfunction via DAPK3/Akt/ERK activation in male rats. Toxicol Appl Pharmacol 2015; 287:284-92. [PMID: 26111663 DOI: 10.1016/j.taap.2015.06.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/08/2015] [Accepted: 06/20/2015] [Indexed: 11/22/2022]
Abstract
Evidence suggests that male rats are protected against the hypotensive and myocardial depressant effects of ethanol compared with females. We investigated whether E2 modifies the myocardial and oxidative effects of ethanol in male rats. Conscious male rats received ethanol (0.5, 1 or 1.5g/kg i.v.) 30-min after E2 (1μg/kg i.v.) or its vehicle (saline), and hearts were collected at the conclusion of hemodynamic measurements for ex vivo molecular studies. Ethanol had no effect in vehicle-treated rats, but it caused dose-related reductions in LV developed pressure (LVDP), end-diastolic pressure (LVEDP), rate of rise in LV pressure (dP/dtmax) and systolic (SBP) and diastolic (DBP) blood pressures in E2-pretreated rats. These effects were associated with elevated (i) indices of reactive oxygen species (ROS), (ii) malondialdehyde (MDA) protein adducts, and (iii) phosphorylated death-associated protein kinase-3 (DAPK3), Akt, and extracellular signal-regulated kinases (ERK1/2). Enhanced myocardial anti-oxidant enzymes (heme oxygenase-1, catalase and aldehyde dehydrogenase 2) activities were also demonstrated. In conclusion, E2 promotes ethanol-evoked myocardial oxidative stress and dysfunction in male rats. The present findings highlight the risk of developing myocardial dysfunction in men who consume alcohol while receiving E2 for specific medical conditions.
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Guo R, Xu X, Babcock SA, Zhang Y, Ren J. Aldehyde dedydrogenase-2 plays a beneficial role in ameliorating chronic alcohol-induced hepatic steatosis and inflammation through regulation of autophagy. J Hepatol 2015; 62:647-56. [PMID: 25457208 PMCID: PMC4336638 DOI: 10.1016/j.jhep.2014.10.009] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/08/2014] [Accepted: 10/08/2014] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS Mitochondrial aldehyde dehydrogenase (ALDH2) plays a critical role in the detoxification of the ethanol metabolite acetaldehyde. This study was designed to examine the impact of global ALDH2 overexpression on alcohol-induced hepatic steatosis. METHODS Wild type Friend virus B (FVB) and ALDH2 transgenic mice were placed on a 4% alcohol or control diet for 12 weeks. Serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), bilirubin and cholesterol, hepatic triglyceride, steatosis, fat metabolism-related proteins, pro-inflammatory cytokines, glutathione (GSH), oxidized glutathione (GSSG), autophagy and autophagy signalling were examined. The role of autophagy was evaluated in alcohol dehydrogenase 1 (ADH1)-transfected human hepatocellular liver carcinoma cells (VA-13) treated with or without the autophagy inducer rapamycin and lysosomal inhibitors. RESULTS Chronic alcohol intake led to elevated AST-, ALT-levels, bilirubin, AST/ALT ratio, cholesterol, hepatic triglycerides and hepatic fat deposition as evidenced by H&E and Oil Red O staining. Hepatic fat deposition was associated with disturbed levels of fat metabolism-related proteins (fatty acid synthase, SCD1), upregulated interleukin-6, TNF-α, cyclooxygenase, oxidative stress, and loss of autophagy, effects which were attenuated or ablated by the ALDH2 transgene. Moreover, ethanol (100 mM) and acetaldehyde (100 and 500 μM) increased levels of IL-6 and IFN-γ, and suppressed autophagy in VA-13 cells, effects which were markedly alleviated by rapamycin. In addition, lysosomal inhibitors mimicked ethanol-induced p62 accumulation with little additive effect with ethanol. Ethanol significantly suppressed LC3 conversion in the presence of lysosomal inhibitors. CONCLUSIONS In summary, our results revealed that ALDH2 plays a beneficial role in ameliorating chronic alcohol intake-induced hepatic steatosis and inflammation through regulation of autophagy.
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Affiliation(s)
- Rui Guo
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, USA
| | - Xihui Xu
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, USA
| | - Sara A Babcock
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, USA
| | - Yingmei Zhang
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, USA; Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China; Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Jun Ren
- Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, USA; Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China.
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Gomes KMS, Bechara LRG, Lima VM, Ribeiro MAC, Campos JC, Dourado PM, Kowaltowski AJ, Mochly-Rosen D, Ferreira JCB. Aldehydic load and aldehyde dehydrogenase 2 profile during the progression of post-myocardial infarction cardiomyopathy: benefits of Alda-1. Int J Cardiol 2014; 179:129-38. [PMID: 25464432 DOI: 10.1016/j.ijcard.2014.10.140] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 09/25/2014] [Accepted: 10/18/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND/OBJECTIVES We previously demonstrated that reducing cardiac aldehydic load by aldehyde dehydrogenase 2 (ALDH2), a mitochondrial enzyme responsible for metabolizing the major lipid peroxidation product, protects against acute ischemia/reperfusion injury and chronic heart failure. However, time-dependent changes in ALDH2 profile, aldehydic load and mitochondrial bioenergetics during progression of post-myocardial infarction (post-MI) cardiomyopathy are unknown and should be established to determine the optimal time window for drug treatment. METHODS Here we characterized cardiac ALDH2 activity and expression, lipid peroxidation, 4-hydroxy-2-nonenal (4-HNE) adduct formation, glutathione pool and mitochondrial energy metabolism and H₂O₂ release during the 4 weeks after permanent left anterior descending (LAD) coronary artery occlusion in rats. RESULTS We observed a sustained disruption of cardiac mitochondrial function during the progression of post-MI cardiomyopathy, characterized by >50% reduced mitochondrial respiratory control ratios and up to 2 fold increase in H₂O₂ release. Mitochondrial dysfunction was accompanied by accumulation of cardiac and circulating lipid peroxides and 4-HNE protein adducts and down-regulation of electron transport chain complexes I and V. Moreover, increased aldehydic load was associated with a 90% reduction in cardiac ALDH2 activity and increased glutathione pool. Further supporting an ALDH2 mechanism, sustained Alda-1 treatment (starting 24h after permanent LAD occlusion surgery) prevented aldehydic overload, mitochondrial dysfunction and improved ventricular function in post-MI cardiomyopathy rats. CONCLUSION Taken together, our findings demonstrate a disrupted mitochondrial metabolism along with an insufficient cardiac ALDH2-mediated aldehyde clearance during the progression of ventricular dysfunction, suggesting a potential therapeutic value of ALDH2 activators during the progression of post-myocardial infarction cardiomyopathy.
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Affiliation(s)
- Katia M S Gomes
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Brazil
| | - Luiz R G Bechara
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Brazil
| | - Vanessa M Lima
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Brazil
| | - Márcio A C Ribeiro
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Brazil
| | - Juliane C Campos
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Brazil
| | | | - Alicia J Kowaltowski
- Departamento de Bioquímica, Instituto de Química, Universidade de Sao Paulo, Brazil
| | - Daria Mochly-Rosen
- Department of Chemical & Systems Biology, Stanford University School of Medicine, Stanford, USA
| | - Julio C B Ferreira
- Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Brazil.
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A novel protective mechanism for mitochondrial aldehyde dehydrogenase (ALDH2) in type i diabetes-induced cardiac dysfunction: role of AMPK-regulated autophagy. Biochim Biophys Acta Mol Basis Dis 2014; 1852:319-31. [PMID: 24874076 DOI: 10.1016/j.bbadis.2014.05.017] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 05/12/2014] [Accepted: 05/17/2014] [Indexed: 12/18/2022]
Abstract
Mitochondrial aldehyde dehydrogenase (ALDH2) is known to offer myocardial protection against stress conditions including ischemia-reperfusion injury, alcoholism and diabetes mellitus although the precise mechanism is unclear. This study was designed to evaluate the effect of ALDH2 on diabetes-induced myocardial injury with a focus on autophagy. Wild-type FVB and ALDH2 transgenic mice were challenged with streptozotozin (STZ, 200mg/kg, i.p.) for 3months to induce experimental diabetic cardiomyopathy. Diabetes triggered cardiac remodeling and contractile dysfunction as evidenced by cardiac hypertrophy, decreased cell shortening and prolonged relengthening duration, the effects of which were mitigated by ALDH2. Lectin staining displayed that diabetes promoted cardiac hypertrophy, the effect of which was alleviated by ALDH2. Western blot analysis revealed dampened autophagy protein markers including LC3B ratio and Atg7 along with upregulated p62 following experimental diabetes, the effect of which was reconciled by ALDH2. Phosphorylation level of AMPK was decreased and its downstream signaling molecule FOXO3a was upregulated in both diabetic cardiac tissue and in H9C2 cells with high glucose exposure. All these effect were partly abolished by ALDH2 overexpression and ALDH2 agonist Alda1. High glucose challenge dampened autophagy in H9C2 cells as evidenced by enhanced p62 levels and decreased levels of Atg7 and LC3B, the effect of which was alleviated by the ALDH2 activator Alda-1. High glucose-induced cell death and apoptosis were reversed by Alda-1. The autophagy inhibitor 3-MA and the AMPK inhibitor compound C mitigated Alda-1-offered beneficial effect whereas the autophagy inducer rapamycin mimicked or exacerbated high glucose-induced cell injury. Moreover, compound C nullified Alda-1-induced protection against STZ-induced changes in autophagy and function. Our results suggested that ALDH2 protects against diabetes-induced myocardial dysfunction possibly through an AMPK -dependent regulation of autophagy. This article is part of a Special Issue entitled: Autophagy and protein quality control in cardiometabolic diseases.
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Mali VR, Ning R, Chen J, Yang XP, Xu J, Palaniyandi SS. Impairment of aldehyde dehydrogenase-2 by 4-hydroxy-2-nonenal adduct formation and cardiomyocyte hypertrophy in mice fed a high-fat diet and injected with low-dose streptozotocin. Exp Biol Med (Maywood) 2014; 239:610-8. [PMID: 24651616 DOI: 10.1177/1535370213520109] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Reactive aldehydes such as 4-hydroxy-2-nonenal (4HNE) are generated in the myocardium in cardiac disease. 4HNE and other toxic aldehydes form adducts with proteins, leading to cell damage and organ dysfunction. Aldehyde dehydrogenases (ALDHs) metabolize toxic aldehydes such as 4HNE into nontoxic metabolites. Both ALDH levels and activity are reduced in cardiac disease. We examined whether reduced ALDH2 activity contributes to cardiomyocyte hypertrophy in mice fed a high-fat diet and injected with low-dose streptozotocin (STZ). These mice exhibited most of the characteristics of metabolic syndrome/type-2 diabetes mellitus (DM): increased blood glucose levels depicting hyperglycemia (415.2 ± 18.7 mg/dL vs. 265.2 ± 7.6 mg/dL; P < 0.05), glucose intolerance with normal plasma insulin levels, suggesting insulin resistance and obesity as evident from increased weight (44 ± 3.1 vs. 34.50 ± 1.32 g; P < 0.05) and body fat. Myocardial ALDH2 activity was 60% lower in these mice (0.1 ± 0.012 vs. 0.04 ± 0.015 µmol/min/mg protein; P < 0.05). Myocardial 4HNE levels were also elevated in the hyperglycemic hearts. Co-immunoprecipitation study showed that 4HNE formed adducts on myocardial ALDH2 protein in the mice exhibiting metabolic syndrome/type-2 DM, and they had obvious cardiac hypertrophy compared with controls as evident from increased heart weight (HW), HW to tibial length ratio, left ventricular (LV) mass and cardiomyocyte hypertrophy. Cardiomyocyte hypertrophy was correlated inversely with ALDH2 activity (R (2 )= 0.7; P < 0.05). Finally, cardiac dysfunction was observed in mice with metabolic syndrome/type-2 DM. Therefore, we conclude that reduced ALDH2 activity may contribute to cardiac hypertrophy and dysfunction in mice presenting with some of the characteristics of metabolic syndrome/type-2 DM when on a high-fat diet and low-dose STZ injection.
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Affiliation(s)
- Vishal R Mali
- Division of Hypertension and Vascular Research, Department of Internal Medicine, Henry Ford Health System, Detroit, MI 48202, USA
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Chen CH, Ferreira JCB, Gross ER, Mochly-Rosen D. Targeting aldehyde dehydrogenase 2: new therapeutic opportunities. Physiol Rev 2014; 94:1-34. [PMID: 24382882 DOI: 10.1152/physrev.00017.2013] [Citation(s) in RCA: 421] [Impact Index Per Article: 42.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A family of detoxifying enzymes called aldehyde dehydrogenases (ALDHs) has been a subject of recent interest, as its role in detoxifying aldehydes that accumulate through metabolism and to which we are exposed from the environment has been elucidated. Although the human genome has 19 ALDH genes, one ALDH emerges as a particularly important enzyme in a variety of human pathologies. This ALDH, ALDH2, is located in the mitochondrial matrix with much known about its role in ethanol metabolism. Less known is a new body of research to be discussed in this review, suggesting that ALDH2 dysfunction may contribute to a variety of human diseases including cardiovascular diseases, diabetes, neurodegenerative diseases, stroke, and cancer. Recent studies suggest that ALDH2 dysfunction is also associated with Fanconi anemia, pain, osteoporosis, and the process of aging. Furthermore, an ALDH2 inactivating mutation (termed ALDH2*2) is the most common single point mutation in humans, and epidemiological studies suggest a correlation between this inactivating mutation and increased propensity for common human pathologies. These data together with studies in animal models and the use of new pharmacological tools that activate ALDH2 depict a new picture related to ALDH2 as a critical health-promoting enzyme.
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