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Zhang J, Chen S, Hu X, Huang L, Loh P, Yuan X, Liu Z, Lian J, Geng L, Chen Z, Guo Y, Chen B. The role of the peripheral system dysfunction in the pathogenesis of sepsis-associated encephalopathy. Front Microbiol 2024; 15:1337994. [PMID: 38298892 PMCID: PMC10828041 DOI: 10.3389/fmicb.2024.1337994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/04/2024] [Indexed: 02/02/2024] Open
Abstract
Sepsis is a condition that greatly impacts the brain, leading to neurological dysfunction and heightened mortality rates, making it one of the primary organs affected. Injury to the central nervous system can be attributed to dysfunction of various organs throughout the entire body and imbalances within the peripheral immune system. Furthermore, central nervous system injury can create a vicious circle with infection-induced peripheral immune disorders. We collate the pathogenesis of septic encephalopathy, which involves microglial activation, programmed cell death, mitochondrial dysfunction, endoplasmic reticulum stress, neurotransmitter imbalance, and blood-brain barrier disruption. We also spotlight the effects of intestinal flora and its metabolites, enterocyte-derived exosomes, cholinergic anti-inflammatory pathway, peripheral T cells and their cytokines on septic encephalopathy.
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Affiliation(s)
- Jingyu Zhang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shuangli Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiyou Hu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lihong Huang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - PeiYong Loh
- School of International Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xinru Yuan
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhen Liu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jinyu Lian
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lianqi Geng
- Binhai New Area Hospital of TCM, Fourth Teaching Hospital of Tianjin University of TCM, Tianjin, China
| | - Zelin Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Acupuncture and Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Yi Guo
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Bo Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Binhai New Area Hospital of TCM, Fourth Teaching Hospital of Tianjin University of TCM, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Acupuncture and Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
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Xu Y, Zhang X, Tang X, Zhang C, Cahoon JG, Wang Y, Li H, Lv X, Wang Y, Wang Z, Wang H, Yang D. Dexmedetomidine post-treatment exacerbates metabolic disturbances in septic cardiomyopathy via α 2A-adrenoceptor. Biomed Pharmacother 2024; 170:115993. [PMID: 38091635 DOI: 10.1016/j.biopha.2023.115993] [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: 09/22/2023] [Revised: 11/27/2023] [Accepted: 12/06/2023] [Indexed: 01/10/2024] Open
Abstract
Cardiomyopathy is a common complication and significantly increases the risk of death in septic patients. Our previous study demonstrated that post-treatment with dexmedetomidine (DEX) aggravates septic cardiomyopathy. However, the mechanisms for the side effect of DEX post-treatment on septic cardiomyopathy are not well-defined. Here we employed a cecal ligation and puncture (CLP) model and α2A-adrenoceptor deficient (Adra2a-/-) mice to observe the effects of DEX post-treatment on myocardial metabolic disturbances in sepsis. CLP mice displayed significant cardiac dysfunction, altered mitochondrial dynamics, reduced cardiac lipid and glucose uptake, impaired fatty acid and glucose oxidation, enhanced glycolysis and decreased ATP production in the myocardium, almost all of which were dramatically enhanced by DEX post-treatment in septic mice. In Adra2a-/- mice, DEX post-treatment did not affect cardiac dysfunction and metabolic disruptions in CLP-induced sepsis. Additionally, Adra2a-/- mice exhibited impaired cardiac function, damaged myocardial mitochondrial structures, and disturbed fatty acid metabolism and glucose oxidation. In sum, DEX post-treatment exacerbates metabolic disturbances in septic cardiomyopathy in a α2A-adrenoceptor dependent manner.
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Affiliation(s)
- Yaqian Xu
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Xue Zhang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Xiangxu Tang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Chanjuan Zhang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Jason G Cahoon
- Department of Immunology, School of Medicine, UConn Health, Farmington, CT 06030, USA
| | - Yingwei Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Hongmei Li
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Xiuxiu Lv
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Yiyang Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Zhi Wang
- Key Laboratory of Occupational Environment and Health, Guangzhou Twelfth People's Hospital, Guangzhou 510620, China
| | - Huadong Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China.
| | - Duomeng Yang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China.
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3
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Lv J, Hu Y, Li L, He Y, Wang J, Guo N, Fang Y, Chen Q, Cai C, Tong J, Tang L, Wang Z. Targeting FABP4 in elderly mice rejuvenates liver metabolism and ameliorates aging-associated metabolic disorders. Metabolism 2023; 142:155528. [PMID: 36842611 DOI: 10.1016/j.metabol.2023.155528] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/06/2023] [Accepted: 02/20/2023] [Indexed: 02/28/2023]
Abstract
INTRODUCTION Aging is characterized by progressive metabolic dyshomeostasis that increases morbidity and mortality. Solutions for optimizing healthy aging are challenged by lacking appropriate biomarkers. Moreover, druggable targets to rejuvenate the aging-associated metabolic phenotypes remain unavailable. METHODS Proteomics analysis was performed in a cohort of young and elderly adults. Circulating levels of insulin-like growth factor 1 (IGF-1) and fatty acid binding protein 4 (FABP4) were evaluated by ELISA. FABP4 was silenced in elderly mice by adeno-associated virus. Metabolic activities were measured by metabolic cages. Cognitive function was evaluated by Morris water maze. Glucose and lipid metabolism were evaluated by biochemistry assays with blood samples. RNA-seq in mouse liver was performed for transcriptome analysis. RESULTS Among 9 aging-sensitive proteins shared by both male and female, FABP4 was identified as a reliable aging biomarker in both human and mouse. Silencing FABP4 in elderly mice significantly rejuvenated the aging-associated decline in metabolic activities. FABP4 knockdown reversed the aging-associated metabolic disorders by promoting degradation of cholesterol and fatty acids, while suppressing gluconeogenesis. Transcriptome analysis revealed a restoration of the pro-aging gene reprogramming towards inflammation and metabolic disorders in the liver after FABP4 knockdown. FABP4 overexpression promoted human LO2 cell senescence. Moreover, administration of an FABP4 inhibitor BMS309403 delivered metabolic benefits in elderly mice. CONCLUSION Our findings demonstrate FABP4 as a reliable aging biomarker as well as a practicable target to improve healthy aging in the elderly.
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Affiliation(s)
- Jian Lv
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Shenzhen Key Laboratory of Cardiovascular Disease, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen 518057, China; State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yimeng Hu
- Department of Endocrinology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450003, China; Department of Endocrinology, Renmin Hospital of Wuhan University, Wuhan 430060, China.
| | - Lili Li
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Yuan He
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Jingjing Wang
- School of Martial Arts, Wuhan Sports University, Wuhan 430079, China
| | - Ningning Guo
- Shenzhen Key Laboratory of Cardiovascular Disease, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen 518057, China; State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu Fang
- Shenzhen Key Laboratory of Cardiovascular Disease, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen 518057, China; State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qin Chen
- School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Cheguo Cai
- Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.
| | - Jingjing Tong
- School of Life Sciences, Central China Normal University, Wuhan 430079, China.
| | - Lixu Tang
- School of Martial Arts, Wuhan Sports University, Wuhan 430079, China.
| | - Zhihua Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Shenzhen Key Laboratory of Cardiovascular Disease, Fuwai Hospital Chinese Academy of Medical Sciences, Shenzhen 518057, China; State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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4
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Long G, Pei Z, Wu M, Wei K, Du Y, Wang Q, Zhang Y, Huang S, Chen H, Xia W, Jia Z. Novel function of Roxadustat (FG-4592) as an anti-shock drug in sepsis by regulating mitochondrial oxidative stress and energy metabolism. Biochim Biophys Acta Gen Subj 2023; 1867:130264. [PMID: 36273674 DOI: 10.1016/j.bbagen.2022.130264] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/29/2022] [Accepted: 10/16/2022] [Indexed: 11/13/2022]
Abstract
BACKGROUND Septic shock is a serious clinical syndrome leading to high mortality. A new anti-anemia drug Roxadustat (FG-4592) protected against cardiac injury and hypertension. However, its effect and mechanism on shock and cardiac dysfunction induced by sepsis require to be investigated. METHODS C57BL/6j mice received FG-4592 (10 mg/kg/day) by i.p injection, followed by lipopolysaccharide (LPS) or cecal ligation and puncture (CLP) treatment. Mortality and shock status were monitored during the experiment. Cardiac function was assessed using echocardiography and serum lactate dehydrogenase (LDH) and creatine kinase-MB (CK-MB) assay. TEM, COX-SDH staining and ATP production were used to evaluate mitochondrial function. A non-targeted metabolomic analysis was performed to evaluate the metabolic disorders. RESULTS Both pre- and post-treatment of FG-4592 could improve the survival rate in LPS- and CLP-induced sepsis mice with a better effect in pre-treated animals. Meanwhile, FG-4592 improved systolic blood pressure and body temperature drop in septic mice along with alleviated cardiac dysfunction (as shown by the restoration of decreased LVEF and LVFS and increased LDH and CK-MB) and inflammation. Interestingly, we observed that FG-4592 improved mitochondrial oxidative stress possibly by upregulating the anti-oxidative enzymes of SOD2 and HO-1. Furthermore, FG-4592 improved the energy supply and glycerophospholipid metabolism in cardiomyocytes, possibly through upregulating the HIF-1α-targeted genes of LDHA and PDK1 in glycolysis and CHK-α, respectively. CONCLUSIONS FG-4592 protected against mortality and shock in septic animals possibly by antagonizing mitochondrial oxidative stress and metabolic disorders. GENERAL SIGNIFICANCE This study provides a potential of FG-4592 as a novel drug for treating septic shock.
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Affiliation(s)
- Guangfeng Long
- Department of Clinical Laboratory, Children's Hospital of Nanjing Medical University, Nanjing 210008, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Zhiyin Pei
- Department of Clinical Laboratory, Children's Hospital of Nanjing Medical University, Nanjing 210008, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Meng Wu
- Department of Clinical Laboratory, Children's Hospital of Nanjing Medical University, Nanjing 210008, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Ke Wei
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
| | - Yang Du
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China; Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Qian Wang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China; Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Yue Zhang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China; Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Songming Huang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
| | - Hongbing Chen
- Department of Clinical Laboratory, Children's Hospital of Nanjing Medical University, Nanjing 210008, China.
| | - Weiwei Xia
- Department of Clinical Laboratory, Children's Hospital of Nanjing Medical University, Nanjing 210008, China; Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China; Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China.
| | - Zhanjun Jia
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China; Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China.
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Suffee N, Baptista E, Piquereau J, Ponnaiah M, Doisne N, Ichou F, Lhomme M, Pichard C, Galand V, Mougenot N, Dilanian G, Lucats L, Balse E, Mericskay M, Le Goff W, Hatem SN. Impacts of a high-fat diet on the metabolic profile and the phenotype of atrial myocardium in mice. Cardiovasc Res 2022; 118:3126-3139. [PMID: 34971360 DOI: 10.1093/cvr/cvab367] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 12/27/2021] [Indexed: 12/16/2022] Open
Abstract
AIMS Obesity, diabetes, and metabolic syndromes are risk factors of atrial fibrillation (AF). We tested the hypothesis that metabolic disorders have a direct impact on the atria favouring the formation of the substrate of AF. METHODS AND RESULTS Untargeted metabolomic and lipidomic analysis was used to investigate the consequences of a prolonged high-fat diet (HFD) on mouse atria. Atrial properties were characterized by measuring mitochondria respiration in saponin-permeabilized trabeculae, by recording action potential (AP) with glass microelectrodes in trabeculae and ionic currents in myocytes using the perforated configuration of patch clamp technique and by several immuno-histological and biochemical approaches. After 16 weeks of HFD, obesogenic mice showed a vulnerability to AF. The atrial myocardium acquired an adipogenic and inflammatory phenotypes. Metabolomic and lipidomic analysis revealed a profound transformation of atrial energy metabolism with a predominance of long-chain lipid accumulation and beta-oxidation activation in the obese mice. Mitochondria respiration showed an increased use of palmitoyl-CoA as energy substrate. APs were short duration and sensitive to the K-ATP-dependent channel inhibitor, whereas K-ATP current was enhanced in isolated atrial myocytes of obese mouse. CONCLUSION HFD transforms energy metabolism, causes fat accumulation, and induces electrical remodelling of the atrial myocardium of mice that become vulnerable to AF.
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Affiliation(s)
- Nadine Suffee
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Elodie Baptista
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Jérôme Piquereau
- ICANalytics, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Maharajah Ponnaiah
- ICANalytics, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Nicolas Doisne
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Farid Ichou
- ICANalytics, Institute of Cardiometabolism and Nutrition (ICAN), Paris, France
| | - Marie Lhomme
- Paris-Saclay University, Inserm UMRS 1180 Signaling and Cardiovascular Pathophysiology, Châtenay-Malabry, France
| | - Camille Pichard
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Vincent Galand
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Nathalie Mougenot
- INSERM UMR_S28, Faculté de médecine Sorbonne University, Paris, France
| | - Gilles Dilanian
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Laurence Lucats
- Sanofi-Aventis R&D, Cardiovascular and Metabolism Research, Chilly-Mazarin, France
| | - Elise Balse
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Mathias Mericskay
- Paris-Saclay University, Inserm UMRS 1180 Signaling and Cardiovascular Pathophysiology, Châtenay-Malabry, France
| | - Wilfried Le Goff
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Paris, France
| | - Stéphane N Hatem
- INSERM UMRS1166, ICAN-Institute of Cardiometabolism and Nutrition, Sorbonne University, Institute of Cardiology, Pitié-Salpêtrière Hospital, Paris, France
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Wang W, Mu M, Zou Y, Deng S, Lu Y, Li Q, Li Z, Tao H, Wang Y, Tao X. Glycogen metabolism reprogramming promotes inflammation in coal dust-exposed lung. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 242:113913. [PMID: 35907323 DOI: 10.1016/j.ecoenv.2022.113913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 07/16/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Long-term coal dust exposure triggers complex inflammatory processes in the coal workers' pneumoconiosis (CWP) lungs. The progress of the inflammation is reported to be affected by disordered cell metabolism. However, the changes in the metabolic reprogramming associated with the pulmonary inflammation induced by the coal dust particles are unknown. Herein, we show that coal dust exposure causes glycogen accumulation and the reprogramming of glucose metabolism in the CWP lung. The glycogen accumulation caused by coal dust is mainly due to macrophages, which reprogram glycogen metabolism and trigger an inflammatory response. In addition, 2-deoxy-D-glucose (2-DG) reduced glycogen content in macrophages, which was accompanied by mitigated inflammation and restrained NF-κB activation. Accordingly, we have pinpointed a novel and crucial metabolic pathway that is an essential regulator of the inflammatory phenotype of coal dust-exposed macrophages. These results shed light on new ways to regulate CWP inflammation.
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Affiliation(s)
- Wenyang Wang
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Min Mu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, China
| | - Yuanjie Zou
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Songsong Deng
- Department of Clinical Laboratory, Chaoyang Hospital, Huainan, China
| | - Yuting Lu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Qinglong Li
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Zeyu Li
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China
| | - Huihui Tao
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, China
| | - Yun Wang
- School of Bioengineering, Huainan Normal University, Huainan 232038, China
| | - Xinrong Tao
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, China; Anhui Province Engineering Laboratory of Occupational Health and Safety, China; School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, China; Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, Anhui University of Science and Technology, China.
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7
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Marmett B, Dorneles GP, Nunes RB, Peres A, Romão PRT, Rhoden CR. Exposure to fine particulate matter partially counteract adaptations on glucose metabolism, oxidative stress, and inflammation of endurance exercise in rats. Inhal Toxicol 2022; 34:287-296. [PMID: 35820034 DOI: 10.1080/08958378.2022.2098425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Long-term exposure to air pollution triggers metabolic alterations along with oxidative stress and inflammation, while exercise interventions are widely used to improve those parameters. OBJECTIVE Our study aimed to determine the effects of subchronic exposure to particulate matter 2.5 (PM2.5) and endurance exercise training on glucose metabolism, oxidative stress, and inflammation of the heart and gastrocnemius muscle of rats. MATERIAL AND METHODS Thirty-two male Wistar rats were assigned to 4 experimental groups: Untrained; Endurance training (ET); Untrained + PM2.5; Endurance training + PM2.5. Rats exposed to air pollution received 50 µg of PM2.5 via intranasal instillation daily for 12 weeks. Exercised groups underwent endurance training, consisting in running on an electronic treadmill (70% of maximal capacity, 5 days/week, 5 times/week) for 12 weeks. Glucose metabolism markers, redox state, and inflammatory variables were evaluated in the heart and gastrocnemius muscle. RESULTS ET and ET + PM2.5 group had lower body mass gain and higher exercise capacity, and higher glycogen concentration in the heart and gastrocnemius muscle. In the heart, ET and ET + PM2.5 groups had higher levels of GSH, and lower TBARS and TNF-α concentrations. In the gastrocnemius muscle, the ET group showed higher leptin and lower TBARS and IL-1β concentrations, ET and ET + PM2.5 showed higher superoxide dismutase activity and ROS content. CONCLUSION PM2.5 exposure partially blunts metabolic and inflammatory adaptations in heart and gastrocnemius muscle tissues induced by exercise training.
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Affiliation(s)
- Bruna Marmett
- Atmospheric Pollution Laboratory, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Gilson Pires Dorneles
- Cellular and Molecular Immunology Laboratory, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | | | - Alessandra Peres
- Cellular and Molecular Immunology Laboratory, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Pedro Roosevelt Torres Romão
- Cellular and Molecular Immunology Laboratory, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
| | - Cláudia Ramos Rhoden
- Cellular and Molecular Immunology Laboratory, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brazil
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8
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Petroni RC, de Oliveira SJS, Fungaro TP, Ariga SKK, Barbeiro HV, Soriano FG, de Lima TM. Short-term Obesity Worsens Heart Inflammation and Disrupts Mitochondrial Biogenesis and Function in an Experimental Model of Endotoxemia. Inflammation 2022; 45:1985-1999. [PMID: 35411498 DOI: 10.1007/s10753-022-01669-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/22/2022] [Accepted: 03/31/2022] [Indexed: 11/28/2022]
Abstract
Cardiomyopathy is a well-known complication of sepsis that may deteriorate when accompanied by obesity. To test this hypothesis we fed C57black/6 male mice for 6 week with a high fat diet (60% energy) and submitted them to endotoxemic shock using E. coli LPS (10 mg/kg). Inflammatory markers (cytokines and adhesion molecules) were determined in plasma and heart tissue, as well as heart mitochondrial biogenesis and function. Obesity markedly shortened the survival rate of mouse after LPS injection and induced a persistent systemic inflammation since TNFα, IL-1β, IL-6 and resistin plasma levels were higher 24 h after LPS injection. Heart tissue inflammation was significantly higher in obese mice, as detected by elevated mRNA expression of pro-inflammatory cytokines (IL-1β, IL-6 and TNFα). Obese animals presented reduced maximum respiratory rate after LPS injection, however fatty acid oxidation increased in both groups. LPS decreased mitochondrial DNA content and mitochondria biogenesis factors, such as PGC1α and PGC1β, in both groups, while NRF1 expression was significantly stimulated in obese mice hearts. Mitochondrial fusion/fission balance was only altered by obesity, with no influence of endotoxemia. Obesity accelerated endotoxemia death rate due to higher systemic inflammation and decreased heart mitochondrial respiratory capacity.
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Affiliation(s)
- Ricardo Costa Petroni
- Emergency Medicine Department, Medical School, University of São Paulo, Av. Dr. Arnaldo, 455 - Cerqueira César, São Paulo, São Paulo, CEP, 01246-903, Brazil
| | - Suelen Jeronymo Souza de Oliveira
- Emergency Medicine Department, Medical School, University of São Paulo, Av. Dr. Arnaldo, 455 - Cerqueira César, São Paulo, São Paulo, CEP, 01246-903, Brazil
| | - Thais Pineda Fungaro
- Emergency Medicine Department, Medical School, University of São Paulo, Av. Dr. Arnaldo, 455 - Cerqueira César, São Paulo, São Paulo, CEP, 01246-903, Brazil
| | - Suely K K Ariga
- Emergency Medicine Department, Medical School, University of São Paulo, Av. Dr. Arnaldo, 455 - Cerqueira César, São Paulo, São Paulo, CEP, 01246-903, Brazil
| | - Hermes Vieira Barbeiro
- Emergency Medicine Department, Medical School, University of São Paulo, Av. Dr. Arnaldo, 455 - Cerqueira César, São Paulo, São Paulo, CEP, 01246-903, Brazil
| | - Francisco Garcia Soriano
- Emergency Medicine Department, Medical School, University of São Paulo, Av. Dr. Arnaldo, 455 - Cerqueira César, São Paulo, São Paulo, CEP, 01246-903, Brazil
| | - Thais Martins de Lima
- Emergency Medicine Department, Medical School, University of São Paulo, Av. Dr. Arnaldo, 455 - Cerqueira César, São Paulo, São Paulo, CEP, 01246-903, Brazil.
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9
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Iso T, Kurabayashi M. Cardiac Metabolism and Contractile Function in Mice with Reduced Trans-Endothelial Fatty Acid Transport. Metabolites 2021; 11:metabo11120889. [PMID: 34940647 PMCID: PMC8706312 DOI: 10.3390/metabo11120889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 01/15/2023] Open
Abstract
The heart is a metabolic omnivore that combusts a considerable amount of energy substrates, mainly long-chain fatty acids (FAs) and others such as glucose, lactate, ketone bodies, and amino acids. There is emerging evidence that muscle-type continuous capillaries comprise the rate-limiting barrier that regulates FA uptake into cardiomyocytes. The transport of FAs across the capillary endothelium is composed of three major steps-the lipolysis of triglyceride on the luminal side of the endothelium, FA uptake by the plasma membrane, and intracellular FA transport by cytosolic proteins. In the heart, impaired trans-endothelial FA (TEFA) transport causes reduced FA uptake, with a compensatory increase in glucose use. In most cases, mice with reduced FA uptake exhibit preserved cardiac function under unstressed conditions. When the workload is increased, however, the total energy supply relative to its demand (estimated with pool size in the tricarboxylic acid (TCA) cycle) is significantly diminished, resulting in contractile dysfunction. The supplementation of alternative fuels, such as medium-chain FAs and ketone bodies, at least partially restores contractile dysfunction, indicating that energy insufficiency due to reduced FA supply is the predominant cause of cardiac dysfunction. Based on recent in vivo findings, this review provides the following information related to TEFA transport: (1) the mechanisms of FA uptake by the heart, including TEFA transport; (2) the molecular mechanisms underlying the induction of genes associated with TEFA transport; (3) in vivo cardiac metabolism and contractile function in mice with reduced TEFA transport under unstressed conditions; and (4) in vivo contractile dysfunction in mice with reduced TEFA transport under diseased conditions, including an increased afterload and streptozotocin-induced diabetes.
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Affiliation(s)
- Tatsuya Iso
- Department of Medical Technology and Clinical Engineering, Faculty of Medical Technology and Clinical Engineering, Gunma University of Health and Welfare, 191-1 Kawamagari-Machi, Maebashi 371-0823, Gunma, Japan
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Gunma, Japan;
- Correspondence:
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Gunma, Japan;
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10
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Umbarawan Y, Kawakami R, Syamsunarno MRAA, Obinata H, Yamaguchi A, Hanaoka H, Hishiki T, Hayakawa N, Koitabashi N, Sunaga H, Matsui H, Kurabayashi M, Iso T. Reduced Fatty Acid Use from CD36 Deficiency Deteriorates Streptozotocin-Induced Diabetic Cardiomyopathy in Mice. Metabolites 2021; 11:881. [PMID: 34940639 PMCID: PMC8707002 DOI: 10.3390/metabo11120881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 01/17/2023] Open
Abstract
Cardiac dysfunction is induced by multifactorial mechanisms in diabetes. Deranged fatty acid (FA) utilization, known as lipotoxicity, has long been postulated as one of the upstream events in the development of diabetic cardiomyopathy. CD36, a transmembrane glycoprotein, plays a major role in FA uptake in the heart. CD36 knockout (CD36KO) hearts exhibit reduced rates of FA transport with marked enhancement of glucose use. In this study, we explore whether reduced FA use by CD36 ablation suppresses the development of streptozotocin (STZ)-induced diabetic cardiomyopathy. We found that cardiac contractile dysfunction had deteriorated 16 weeks after STZ treatment in CD36KO mice. Although accelerated glucose uptake was not reduced in CD36KO-STZ hearts, the total energy supply, estimated by the pool size in the TCA cycle, was significantly reduced. The isotopomer analysis with 13C6-glucose revealed that accelerated glycolysis, estimated by enrichment of 13C2-citrate and 13C2-malate, was markedly suppressed in CD36KO-STZ hearts. Levels of ceramides, which are cardiotoxic lipids, were not elevated in CD36KO-STZ hearts compared to wild-type-STZ ones. Furthermore, increased energy demand by transverse aortic constriction resulted in synergistic exacerbation of contractile dysfunction in CD36KO-STZ mice. These findings suggest that CD36KO-STZ hearts are energetically compromised by reduced FA use and suppressed glycolysis; therefore, the limitation of FA utilization is detrimental to cardiac energetics in this model of diabetic cardiomyopathy.
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Affiliation(s)
- Yogi Umbarawan
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (Y.U.); (R.K.); (M.R.A.A.S.); (N.K.); (H.S.); (M.K.)
- Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Jl. Salemba Raya no. 6, Jakarta 10430, Indonesia
| | - Ryo Kawakami
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (Y.U.); (R.K.); (M.R.A.A.S.); (N.K.); (H.S.); (M.K.)
| | - Mas Rizky A. A. Syamsunarno
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (Y.U.); (R.K.); (M.R.A.A.S.); (N.K.); (H.S.); (M.K.)
- Department of Biomedical Sciences, Universitas Padjadjaran, Jl. Raya Bandung Sumedang KM 21, Jatinangor 45363, Indonesia
| | - Hideru Obinata
- Education and Research Support Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan;
| | - Aiko Yamaguchi
- Department of Bioimaging Information Analysis, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (A.Y.); (H.H.)
| | - Hirofumi Hanaoka
- Department of Bioimaging Information Analysis, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (A.Y.); (H.H.)
| | - Takako Hishiki
- Department of Biochemistry, Keio University School of Medicine, 35 Shinano-Machi, Shinjuku-Ku, Tokyo 160-8582, Japan; (T.H.); (N.H.)
- Clinical and Translational Research Center, Keio University School of Medicine, 35 Shinano-Machi, Shinjuku-Ku, Tokyo 160-8582, Japan
| | - Noriyo Hayakawa
- Department of Biochemistry, Keio University School of Medicine, 35 Shinano-Machi, Shinjuku-Ku, Tokyo 160-8582, Japan; (T.H.); (N.H.)
- Clinical and Translational Research Center, Keio University School of Medicine, 35 Shinano-Machi, Shinjuku-Ku, Tokyo 160-8582, Japan
| | - Norimichi Koitabashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (Y.U.); (R.K.); (M.R.A.A.S.); (N.K.); (H.S.); (M.K.)
| | - Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (Y.U.); (R.K.); (M.R.A.A.S.); (N.K.); (H.S.); (M.K.)
- Center for Liberal Arts and Sciences, Ashikaga University, 268-1 Omae-Machi, Ashikaga 326-8558, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan;
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (Y.U.); (R.K.); (M.R.A.A.S.); (N.K.); (H.S.); (M.K.)
| | - Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan; (Y.U.); (R.K.); (M.R.A.A.S.); (N.K.); (H.S.); (M.K.)
- Department of Medical Technology and Clinical Engineering, Gunma University of Health and Welfare, 191-1 Kawamagari-Machi, Maebashi 371-0823, Japan
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11
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Kawaguchi S, Okada M. Cardiac Metabolism in Sepsis. Metabolites 2021; 11:metabo11120846. [PMID: 34940604 PMCID: PMC8707959 DOI: 10.3390/metabo11120846] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/02/2021] [Accepted: 12/02/2021] [Indexed: 12/11/2022] Open
Abstract
The mechanism of sepsis-induced cardiac dysfunction is believed to be different from that of myocardial ischemia. In sepsis, chemical mediators, such as endotoxins, cytokines, and nitric oxide, cause metabolic abnormalities, mitochondrial dysfunction, and downregulation of β-adrenergic receptors. These factors inhibit the production of ATP, essential for myocardial energy metabolism, resulting in cardiac dysfunction. This review focuses on the metabolic changes in sepsis, particularly in the heart. In addition to managing inflammation, interventions focusing on metabolism may be a new therapeutic strategy for cardiac dysfunction due to sepsis.
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Affiliation(s)
- Satoshi Kawaguchi
- Department of Anatomy, Cell Biology and Physiology, Indiana University School of Medicine, Bloomington, IN 46202, USA;
| | - Motoi Okada
- Department of Emergency Medicine, Asahikawa Medical University, Asahikawa 078-8510, Japan
- Correspondence: ; Tel.: +81-166-68-2852
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12
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High Throughput Procedure for Comparative Analysis of In Vivo Cardiac Glucose or Amino Acids Use in Cardiovascular Pathologies and Pharmacological Treatments. Metabolites 2021; 11:metabo11080497. [PMID: 34436438 PMCID: PMC8398927 DOI: 10.3390/metabo11080497] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 12/19/2022] Open
Abstract
The heart is characterized by the prominent flexibility of its energy metabolism and is able to use diverse carbon substrates, including carbohydrates and amino acids. Cardiac substrate preference could have a major impact on the progress of cardiac pathologies. However, the majority of methods to investigate changes in substrates’ use in cardiac metabolism in vivo are complex and not suitable for high throughput testing necessary to understand and reverse these pathologies. Thus, this study aimed to develop a simple method that would allow for the analysis of cardiac metabolic substrate use. The developed methods involved the subcutaneous injection of stable 13C isotopomers of glucose, valine, or leucine with mass spectrometric analysis for the investigation of its entry into cardiac metabolic pathways that were deducted from 13C alanine and glutamate enrichments in heart extracts. The procedures were validated by confirming the known effects of treatments that modify glucose, free fatty acids, and amino acid metabolism. Furthermore, we studied changes in the energy metabolism of CD73 knock-out mice to demonstrate the potential of our methods in experimental research. The methods created allowed for fast estimation of cardiac glucose and amino acid use in mice and had the potential for high-throughput analysis of changes in pathology and after pharmacological treatments.
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13
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Mao S, Ma H, Chen P, Liang Y, Zhang M, Hinek A. Fat-1 transgenic mice rich in endogenous omega-3 fatty acids are protected from lipopolysaccharide-induced cardiac dysfunction. ESC Heart Fail 2021; 8:1966-1978. [PMID: 33665922 PMCID: PMC8120410 DOI: 10.1002/ehf2.13262] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 01/16/2021] [Accepted: 01/29/2021] [Indexed: 12/18/2022] Open
Abstract
Aims Cardiac malfunctions developing in result of sepsis are hard to treat so they eventually contribute to the increased mortality. Previous reports indicated for therapeutic potential of exogenous ω‐3 polyunsaturated fatty acids (PUFA) in sepsis, but potential benefits of this compound on the malfunctional heart have not been explored yet. In the present study, we investigated whether the constantly elevated levels of endogenous ω‐3 PUFA in transgenic fat‐1 mice would alleviate the lipopolysaccharide (LPS)‐induced cardiac failure and death. Methods and results After both wild type (WT) and transgenic fat‐1 mice were challenged with LPS, a Kaplan–Meier curve and echocardiography were performed to evaluate the survival rates and cardiac function. Proteomics analysis, RT‐PCR, western blotting, immune‐histochemistry, and transmission electron microscopy were further performed to investigate the underlying mechanisms. Results showed that transgenic fat‐1 mice exhibited the significantly lower mortality after LPS challenge as compared with their WT counterparts (30% vs. 42.5%, P < 0.05). LPS injection consistently impaired the left ventricular contractile function and caused the cardiac injury in the wild type mice, but not significantly affected the fat‐1 mice (P < 0.05). Proteomic analyses, ELISA, and immunohistochemistry further revealed that myocardium of the LPS‐challenged fat‐1 mice demonstrated the significantly lower levels of pro‐inflammatory markers and ROS than WT mice. Meaningfully, the LPS‐treated fat‐1 mice also demonstrated a significantly higher levels of LC3 II/I and Atg7 expressions than the LPS‐treated WT mice (P < 0.05), as well as displayed a selectively increased levels of peroxisome proliferator‐activated receptor (PPAR) γ and sirtuin (Sirt)‐1 expression, associated with a parallel decrease in NFκB activation. Conclusions The fat‐1 mice were protected from the detrimental LPS‐induced inflammation and oxidative stress, and exhibited enhancement of the autophagic flux activities, associating with the increased Sirt‐1 and PPARγ signals.
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Affiliation(s)
- Shuai Mao
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Critical Care Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China.,Translational Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Huan Ma
- Heart Center, Guangdong Provincial General Hospital, Guangzhou, China
| | - Peipei Chen
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Critical Care Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China
| | - Yubin Liang
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Critical Care Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China
| | - Minzhou Zhang
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Critical Care Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China
| | - Aleksander Hinek
- Translational Medicine, Hospital for Sick Children, Toronto, Ontario, Canada
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14
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Umbarawan Y, Kawakami R, Syamsunarno MRAA, Koitabashi N, Obinata H, Yamaguchi A, Hanaoka H, Hishiki T, Hayakawa N, Sunaga H, Matsui H, Kurabayashi M, Iso T. Reduced fatty acid uptake aggravates cardiac contractile dysfunction in streptozotocin-induced diabetic cardiomyopathy. Sci Rep 2020; 10:20809. [PMID: 33257783 PMCID: PMC7705707 DOI: 10.1038/s41598-020-77895-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 11/18/2020] [Indexed: 12/19/2022] Open
Abstract
Diabetes is an independent risk factor for the development of heart failure. Increased fatty acid (FA) uptake and deranged utilization leads to reduced cardiac efficiency and accumulation of cardiotoxic lipids, which is suggested to facilitate diabetic cardiomyopathy. We studied whether reduced FA uptake in the heart is protective against streptozotocin (STZ)-induced diabetic cardiomyopathy by using mice doubly deficient in fatty acid binding protein 4 (FABP4) and FABP5 (DKO mice). Cardiac contractile dysfunction was aggravated 8 weeks after STZ treatment in DKO mice. Although compensatory glucose uptake was not reduced in DKO-STZ hearts, total energy supply, estimated by the pool size in the TCA cycle, was significantly reduced. Tracer analysis with 13C6-glucose revealed that accelerated glycolysis in DKO hearts was strongly suppressed by STZ treatment. Levels of ceramides, cardiotoxic lipids, were similarly elevated by STZ treatment. These findings suggest that a reduction in total energy supply by reduced FA uptake and suppressed glycolysis could account for exacerbated contractile dysfunction in DKO-STZ hearts. Thus, enhanced FA uptake in diabetic hearts seems to be a compensatory response to reduced energy supply from glucose, and therefore, limited FA use could be detrimental to cardiac contractile dysfunction due to energy insufficiency.
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Affiliation(s)
- Yogi Umbarawan
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.,Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Jl. Salemba Raya no. 6, Jakarta, 10430, Indonesia
| | - Ryo Kawakami
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Mas Rizky A A Syamsunarno
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.,Department of Biochemistry and Molecular Biology, Universitas Padjadjaran, Jl. Raya Bandung Sumedang KM 21, Jatinangor, West Java, 45363, Indonesia
| | - Norimichi Koitabashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hideru Obinata
- Education and Research Support Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Aiko Yamaguchi
- Department of Bioimaging Information Analysis, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hirofumi Hanaoka
- Department of Bioimaging Information Analysis, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Takako Hishiki
- Department of Biochemistry, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Clinical and Translational Research Center, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Noriyo Hayakawa
- Clinical and Translational Research Center, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.,Center for Liberal Arts and Sciences, Ashikaga University, 268-1 Omae-machi, Ashikaga, Tochigi, 326-8558, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
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15
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Makrecka-Kuka M, Korzh S, Videja M, Vilskersts R, Sevostjanovs E, Zharkova-Malkova O, Arsenyan P, Kuka J, Dambrova M, Liepinsh E. Inhibition of CPT2 exacerbates cardiac dysfunction and inflammation in experimental endotoxaemia. J Cell Mol Med 2020; 24:11903-11911. [PMID: 32896106 PMCID: PMC7578905 DOI: 10.1111/jcmm.15809] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/06/2020] [Accepted: 08/10/2020] [Indexed: 12/22/2022] Open
Abstract
The suppression of energy metabolism is one of cornerstones of cardiac dysfunction in sepsis/endotoxaemia. To investigate the role of fatty acid oxidation (FAO) in the progression of inflammation‐induced cardiac dysfunction, we compared the effects of FAO‐targeting compounds on mitochondrial and cardiac function in an experimental model of lipopolysaccharide (LPS)‐induced endotoxaemia. In LPS‐treated mice, endotoxaemia‐induced inflammation significantly decreased cardiac FAO and increased pyruvate metabolism, while cardiac mechanical function was decreased. AMP‐activated protein kinase activation by A769662 improved mitochondrial FAO without affecting cardiac function and inflammation‐related gene expression during endotoxaemia. Fatty acid synthase inhibition by C75 restored both cardiac and mitochondrial FAO; however, no effects on inflammation‐related gene expression and cardiac function were observed. In addition, the inhibition of carnitine palmitoyltransferase 2 (CPT2)‐dependent FAO by aminocarnitine resulted in the accumulation of FAO intermediates, long‐chain acylcarnitines, in the heart. As a result, cardiac pyruvate metabolism was inhibited, which further exacerbated inflammation‐induced cardiac dysfunction. In conclusion, although inhibition of CPT2‐dependent FAO is detrimental to cardiac function during endotoxaemia, present findings show that the restoration of cardiac FAO alone is not sufficient to recover cardiac function. Rescue of cardiac FAO should be combined with anti‐inflammatory therapy to ameliorate cardiac dysfunction in endotoxaemia.
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Affiliation(s)
| | | | - Melita Videja
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Pharmacy, Riga Stradins University, Riga, Latvia
| | - Reinis Vilskersts
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Pharmacy, Riga Stradins University, Riga, Latvia
| | | | | | | | - Janis Kuka
- Latvian Institute of Organic Synthesis, Riga, Latvia
| | - Maija Dambrova
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Pharmacy, Riga Stradins University, Riga, Latvia
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16
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Mitochondrial Function in the Kidney and Heart, but Not the Brain, is Mainly Altered in an Experimental Model of Endotoxaemia. Shock 2020; 52:e153-e162. [PMID: 30640252 DOI: 10.1097/shk.0000000000001315] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Significant impairments in mitochondrial function are associated with the development of multi-organ failure in sepsis/endotoxaemia, but the data on the dynamics of simultaneous mitochondrial impairment in multiple organs are limited. The aim of this study was to evaluate the changes in heart, brain and kidney mitochondrial function in an experimental model of lipopolysaccharide (LPS)-induced endotoxaemia.Samples were collected 4 and 24 h after single injection of LPS (10 mg/kg) in mice. Marked increases in inflammation-related gene expression were observed in all studied tissues 4 h after LPS administration. At 24 h post LPS administration, this expression of inflammation-related genes remained upregulated only in kidneys. Significantly increased concentrations of kidney function markers confirmed that kidneys were severely damaged. Echocardiographic measurements showed that the ejection fraction and fractional shortening were significantly reduced 4 h after LPS administration, whereas 24 h after LPS administration, the cardiac function was restored to baseline. A two-fold decrease in mitochondrial oxidative phosphorylation (OXPHOS) capacity in the kidney was observed 4 and 24 h after LPS administration. Significant decrease in mitochondrial fatty acid oxidation was observed in heart 4 h after LPS administration. Furthermore, 24 h after LPS administration, the respiration rates in cardiac fibers at OXPHOS and electron transport (ET) states were significantly increased, which resulted in increased ET coupling efficiency in the LPS-treated group, whereas four-fold increases in the H2O2 production rate and H2O2/O ratio were observed. The brain mitochondria demonstrated a slightly impaired mitochondrial functionality just 24 h after the induction of endotoxaemia.In conclusion, among studied tissues kidney mitochondria are the most sensitive to endotoxaemia and do not recover from LPS-induced damage, whereas in brain, mitochondrial function was not significantly altered. In heart, endotoxaemia induces a decrease in the mitochondrial fatty acid oxidation capacity, but during the phase of suppressed inflammatory response, the ET efficiency is improved despite the marked increase in reactive oxygen species production.
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17
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Autophagy is involved in the protective effect of p21 on LPS-induced cardiac dysfunction. Cell Death Dis 2020; 11:554. [PMID: 32694519 PMCID: PMC7374585 DOI: 10.1038/s41419-020-02765-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 12/18/2022]
Abstract
p21 has emerged as an important protein involved in cardiovascular diseases, but its role remains controversial. Recently, p21 has been reported to mediate inflammatory responses. As inflammatory responses are a feature of sepsis, our study investigated whether p21 has a role in cardiac dysfunction induced by sepsis and analyzed the mechanisms involved. To establish a mouse sepsis model, p21 global knockout (p21KO) and C57BL/6J wild-type (WT) male mice were treated with 5 mg/kg LPS intraperitoneally for 6, 24, or 48 h. After LPS stimulation, the level of p21 had significantly increased in the WT mice and in cardiomyocytes. Cardiac dysfunction induced by LPS was markedly aggravated in p21KO mice relative to that of WT mice. Downregulation of p21 expression exacerbated the LPS-mediated inflammatory response, and it increased oxidative stress as well as mitochondrial damage in the heart and in cardiomyocytes. In contrast, overexpressing p21 attenuated the increase of TNFα and promoted the increase of SOD2. Moreover, p21 regulated the LPS-induced autophagy activation; that is, the increase in autophagy was impaired when p21 expression was decreased, whereas the increase was significant when p21 was overexpressed. The autophagy inducer rapamycin partially rescued the cardiac deterioration caused by p21 downregulation in the LPS-stimulated groups. In addition, p21 regulated the autophagy level by interacting with LC3B. These results revealed that p21 controls LPS-induced cardiac dysfunction by modulating inflammatory and oxidative stress, and it is partially dependent on regulating the autophagy level. This study is the first to show that p21 could interact with LC3B to promote autophagy for the improvement of cardiac function during sepsis.
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18
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Chen RJ, Rui QL, Wang Q, Tian F, Wu J, Kong XQ. Shenfu injection attenuates lipopolysaccharide-induced myocardial inflammation and apoptosis in rats. Chin J Nat Med 2020; 18:226-233. [PMID: 32245593 DOI: 10.1016/s1875-5364(20)30025-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Indexed: 11/18/2022]
Abstract
Shenfu injection (SFI), a Chinese medicinal product, shows potent efficacy in treating sepsis. The aim of the present study was to clarify the protective effects of SFI against lipopolysaccharide (LPS)-induced myocardial inflammation and apoptosis. Experiments were carried out in Sprague-Dawley (SD) rats treated with LPS or LPS + SFI, and in H9C2 cardiomyocytes. The sepsis-associated myocardial inflammation and apoptosis was induced by the intraperitoneal injection of LPS (20 mg·kg-1). SFI attenuated the increased expression of tumor necrosis factor (TNF)-α and interleukin (IL)-1β induced by LPS both in serum and heart. In LPS group, cell viability was reduced, and reversed after SFI administration. LPS treatment increased the expression levels of cleaved-caspase 3 and Bax, and those of Bcl2 and Bcl2/Bax. These two trends were reversed by SFI administration. The expression levels of phosphorylated mitogen-activated protein kinase kinase (p-MEK) and phosphorylated extracellular regulated protein kinases (p-ERK) were increased by LPS, and reversed by SFI. MEK inhibitor U0126 attenuated the apoptosis induced by LPS. These results indicate that SFI could treat LPS-induced cardiac dysfunction. In conclusion, SFI attenuates the inflammation and apoptosis induced by LPS via downregulating the MEK and ERK signaling pathways.
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Affiliation(s)
- Rui-Juan Chen
- Cardiology Department, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China; Emergency Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
| | - Qing-Lin Rui
- Emergency Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
| | - Qiong Wang
- Clinical Pharmacology Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
| | - Fang Tian
- Central Laboratory, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
| | - Jian Wu
- Central Laboratory, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing 210029, China
| | - Xiang-Qing Kong
- Cardiology Department, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China.
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19
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Wang X, Song Y, Chen J, Zhang S, Le Y, Xie Z, Ouyang W, Tong J. Subcutaneous administration of β-hydroxybutyrate improves learning and memory of sepsis surviving mice. Neurotherapeutics 2020; 17:616-626. [PMID: 31853744 PMCID: PMC7283433 DOI: 10.1007/s13311-019-00806-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Post-sepsis cognitive impairment is one of the major sequelae in sepsis survivors. Its prevention remains clinically challenging. Here we tested the effects and underlying mechanisms of exogenous β-hydroxybutyrate (BHB) on post-sepsis cognitive impairment. We found that subcutaneous administration of BHB increased survival and body weight recovery of sepsis mice and improved learning and memory of sepsis surviving mice in a cecal ligation and perforation-induced sepsis model. Additionally, the improvement of learning and memory of sepsis surviving mice was still detected even if BHB was administrated at the late stage of sepsis. In contrast, glucose solution did not show similar effects. Mechanistically, subcutaneous administration of BHB increased the BHB level of hippocampus, and limited neuroinflammation and neuroplasticity damage in sepsis mice. Intracerebroventricular administration of BHB also alleviated neuroinflammation and cognitive impairment of sepsis surviving mice. In the coculture of neurons, astrocytes, and BV2 cells (a microglial cell line), knocking down the expression of microglial HCA2 (BHB receptor) via a specific shRNA reduced the protection of BHB to lipopolysaccharide-induced inflammatory response and neuron damage more significantly than knocking down neuronal MCT2 (BHB transporter). These data showed that (1) BHB was a potential pharmacological adjunct treatment for prevention of post-sepsis cognitive impairment and (2) inhibiting neuroinflammation via HCA2 was an important mechanism.
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Affiliation(s)
- Xueqin Wang
- Center for Experimental Medicine, Third Xiangya Hospital, Central South University, 138th Tongzipo Road, Yuelu District, Changsha, 410013, People's Republic of China
| | - Yaying Song
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Jie Chen
- Center for Experimental Medicine, Third Xiangya Hospital, Central South University, 138th Tongzipo Road, Yuelu District, Changsha, 410013, People's Republic of China
| | - Shuibing Zhang
- Department of Anesthesiology, Third Xiangya Hospital, Central South University, 138th Tongzipo Road, Yuelu District, Changsha, 410013, People's Republic of China
| | - Yuan Le
- Department of Anesthesiology, Third Xiangya Hospital, Central South University, 138th Tongzipo Road, Yuelu District, Changsha, 410013, People's Republic of China
| | - Zhongcong Xie
- Geriatric Anesthesia Research Unit, Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, 02129-2060, USA
| | - Wen Ouyang
- Department of Anesthesiology, Third Xiangya Hospital, Central South University, 138th Tongzipo Road, Yuelu District, Changsha, 410013, People's Republic of China.
| | - Jianbin Tong
- Center for Experimental Medicine, Third Xiangya Hospital, Central South University, 138th Tongzipo Road, Yuelu District, Changsha, 410013, People's Republic of China.
- Department of Anesthesiology, Third Xiangya Hospital, Central South University, 138th Tongzipo Road, Yuelu District, Changsha, 410013, People's Republic of China.
- Hunan Province Key Laboratory of Brain Homeostasis, Third Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China.
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20
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Sunaga H, Koitabashi N, Iso T, Matsui H, Obokata M, Kawakami R, Murakami M, Yokoyama T, Kurabayashi M. Activation of cardiac AMPK-FGF21 feed-forward loop in acute myocardial infarction: Role of adrenergic overdrive and lipolysis byproducts. Sci Rep 2019; 9:11841. [PMID: 31413360 PMCID: PMC6694166 DOI: 10.1038/s41598-019-48356-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 08/02/2019] [Indexed: 12/21/2022] Open
Abstract
Fibroblast growth factor 21 (FGF21) is a metabolic hormone having anti-oxidative and anti-hypertrophic effects. However, the regulation of FGF21 expression during acute myocardial infarction (AMI) remains unclear. We tested blood samples from 50 patients with AMI and 43 patients with stable angina pectoris (sAP) for FGF21, fatty acid binding protein 4 (FABP4), a protein secreted from adipocytes in response to adrenergic lipolytic signal, and total and individual fatty acids. Compared with sAP patients, AMI patients had higher serum FGF21 levels on admission, which were significantly correlated with peak FABP4 and saturated fatty acids (SFAs) but not with peak levels of cardiac troponin T. In mice, myocardial ischemia rapidly induced FGF21 production by the heart, which accompanied activation of AMP-activated protein kinase (AMPK)-dependent pathway. Like AICAR, an activator of AMPK, catecholamines (norepinephrine and isoproterenol) and SFAs (palmitate and stearate) significantly increased FGF21 production and release by cardiac myocytes via AMPK activation. Recombinant FGF21 induced its own expression as well as members of down-stream targets of AMPK involved in metabolic homeostasis and mitochondrial biogenesis in cardiac myocytes. These findings suggest that adrenergic overdrive and resultant adipose tissue lipolysis induce cardiac AMPK-FGF21 feed-forward loop that potentially provides cardioprotection against ischemic damage.
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Affiliation(s)
- Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Norimichi Koitabashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Gunma, Japan
| | - Masaru Obokata
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Ryo Kawakami
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masami Murakami
- Department of Clinical Laboratory Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Tomoyuki Yokoyama
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Gunma, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.
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21
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Umbarawan Y, Syamsunarno MRAA, Koitabashi N, Yamaguchi A, Hanaoka H, Hishiki T, Nagahata-Naito Y, Obinata H, Sano M, Sunaga H, Matsui H, Tsushima Y, Suematsu M, Kurabayashi M, Iso T. Glucose is preferentially utilized for biomass synthesis in pressure-overloaded hearts: evidence from fatty acid-binding protein-4 and -5 knockout mice. Cardiovasc Res 2019; 114:1132-1144. [PMID: 29554241 PMCID: PMC6014234 DOI: 10.1093/cvr/cvy063] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 03/12/2018] [Indexed: 12/21/2022] Open
Abstract
Aims The metabolism of the failing heart is characterized by an increase in glucose uptake with reduced fatty acid (FA) oxidation. We previously found that the genetic deletion of FA-binding protein-4 and -5 [double knockout (DKO)] induces an increased myocardial reliance on glucose with decreased FA uptake in mice. However, whether this fuel switch confers functional benefit during the hypertrophic response remains open to debate. To address this question, we investigated the contractile function and metabolic profile of DKO hearts subjected to pressure overload. Methods and results Transverse aortic constriction (TAC) significantly reduced cardiac contraction in DKO mice (DKO-TAC), although an increase in cardiac mass and interstitial fibrosis was comparable with wild-type TAC (WT-TAC). DKO-TAC hearts exhibited enhanced glucose uptake by 8-fold compared with WT-TAC. Metabolic profiling and isotopomer analysis revealed that the pool size in the TCA cycle and the level of phosphocreatine were significantly reduced in DKO-TAC hearts, despite a marked increase in glycolytic flux. The ingestion of a diet enriched in medium-chain FAs restored cardiac contractile dysfunction in DKO-TAC hearts. The de novo synthesis of amino acids as well as FA from glycolytic flux was unlikely to be suppressed, despite a reduction in each precursor. The pentose phosphate pathway was also facilitated, which led to the increased production of a coenzyme for lipogenesis and a precursor for nucleotide synthesis. These findings suggest that reduced FA utilization is not sufficiently compensated by a robust increase in glucose uptake when the energy demand is elevated. Glucose utilization for sustained biomass synthesis further enhances diminishment of the pool size in the TCA cycle. Conclusions Our data suggest that glucose is preferentially utilized for biomass synthesis rather than ATP production during pressure-overload-induced cardiac hypertrophy and that the efficient supplementation of energy substrates may restore cardiac dysfunction caused by energy insufficiency.
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Affiliation(s)
- Yogi Umbarawan
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan.,Faculty of Medicine
| | - Mas Rizky A A Syamsunarno
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan.,Department of Biochemistry and Molecular Biology, Universitas Padjadjaran, Jatinangor, West Java 45363, Indonesia
| | - Norimichi Koitabashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Aiko Yamaguchi
- Department of Bioimaging Information Analysis, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Hirofumi Hanaoka
- Department of Bioimaging Information Analysis, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Takako Hishiki
- Department of Biochemistry.,Clinical and Translational Research Center, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Yoshiko Nagahata-Naito
- Clinical and Translational Research Center, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hideru Obinata
- Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma 371-8511, Japan
| | - Motoaki Sano
- Department of Cardiology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi, Gunma 371-8511, Japan
| | - Yoshito Tsushima
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan.,Division of Integrated Oncology Research, Research Program for Diagnostic and Molecular Imaging, Maebashi, Gunma 371-8511, Japan
| | | | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan.,Education and Research Support Center, Gunma University Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
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22
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Iso T, Haruyama H, Sunaga H, Matsui M, Matsui H, Tanaka R, Umbarawan Y, Syamsunarno MRAA, Yokoyama T, Kurabayashi M. Exercise endurance capacity is markedly reduced due to impaired energy homeostasis during prolonged fasting in FABP4/5 deficient mice. BMC PHYSIOLOGY 2019; 19:1. [PMID: 30866899 PMCID: PMC6415495 DOI: 10.1186/s12899-019-0038-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 03/06/2019] [Indexed: 11/25/2022]
Abstract
Background Skeletal muscle prefers carbohydrate use to fatty acid (FA) use as exercise intensity increases. In contrast, skeletal muscle minimizes glucose use and relies more on FA during fasting. In mice deficient for FABP4 and FABP5 (double knockout (DKO) mice), FA utilization by red skeletal muscle and the heart is markedly reduced by the impairment of trans-endothelial FA transport, with an increase in glucose use to compensate for reduced FA uptake even during fasting. We attempted to determine whether prolonged fasting affects exercise performance in DKO mice, where constant glucose utilization occurs. Results A single bout of treadmill exercise was performed in the fed and fasted states. The initial speed was 10 m/min, and gradually increased by 5 m/min every 5 min up to 30 m/min until the mice stopped running. Running distance was significantly reduced by DKO genotype and prior fasting, leading to the shortest distance in fasted DKO mice. Levels of glycogen in skeletal muscle and the liver were nearly depleted in both WT and DKO mice during prolonged fasting prior to exercise. Levels of TG in skeletal muscle were not reduced by exercise in fasted DKO mice, suggesting that intramuscular TG was not utilized during exercise. Hypoglycaemia was accelerated in fasted DKO mice, and this acceleration could be due to constant glucose utilization by red skeletal muscle and the heart where FA uptake is diminished due to defective trans-endothelial FA transport. Taken together, energy supply from serum and storage in skeletal muscle were very low in fasted DKO mice, which could lead to a significant reduction in exercise performance. Conclusions FABP4/5 have crucial roles in nutrient homeostasis during prolonged fasting for maintaining exercise endurance capacity.
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Affiliation(s)
- Tatsuya Iso
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
| | - Hikari Haruyama
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hiroaki Sunaga
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Miki Matsui
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hiroki Matsui
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Rina Tanaka
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Yogi Umbarawan
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.,Department of Internal Medicine, Faculty of Medicine Universitas Indonesia, Jl. Salemba Raya no. 6, Jakarta, 10430, Indonesia
| | - Mas Rizky A A Syamsunarno
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.,Department of Biochemistry and Molecular Biology, Universitas Padjadjaran, Jl. Raya Bandung Sumedang KM 21, Jatinangor, West Java, 45363, Indonesia
| | - Tomoyuki Yokoyama
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Masahiko Kurabayashi
- Department of Cardiovascular Medicine, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
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23
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Kohoutová M, Dejmek J, Tůma Z, Kuncová J. Variability of mitochondrial respiration in relation to sepsis-induced multiple organ dysfunction. Physiol Res 2019; 67:S577-S592. [PMID: 30607965 DOI: 10.33549/physiolres.934050] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Ample experimental evidence suggests that sepsis could interfere with any mitochondrial function; however, the true role of mitochondrial dysfunction in the pathogenesis of sepsis-induced multiple organ dysfunction is still a matter of controversy. This review is primarily focused on mitochondrial oxygen consumption in various animal models of sepsis in relation to human disease and potential sources of variability in experimental results documenting decrease, increase or no change in mitochondrial respiration in various organs and species. To date, at least three possible explanations of sepsis-associated dysfunction of the mitochondrial respiratory system and consequently impaired energy production have been suggested: 1. Mitochondrial dysfunction is secondary to tissue hypoxia. 2. Mitochondria are challenged by various toxins or mediators of inflammation that impair oxygen utilization (cytopathic hypoxia). 3. Compromised mitochondrial respiration could be an active measure of survival strategy resembling stunning or hibernation. To reveal the true role of mitochondria in sepsis, sources of variability of experimental results based on animal species, models of sepsis, organs studied, or analytical approaches should be identified and minimized by the use of appropriate experimental models resembling human sepsis, wider use of larger animal species in preclinical studies, more detailed mapping of interspecies differences and organ-specific features of oxygen utilization in addition to use of complex and standardized protocols evaluating mitochondrial respiration.
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Affiliation(s)
- M Kohoutová
- Institute of Physiology, Faculty of Medicine in Plzeň, Charles University, Plzeň, Czech Republic.
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24
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Myocardial fatty acid uptake through CD36 is indispensable for sufficient bioenergetic metabolism to prevent progression of pressure overload-induced heart failure. Sci Rep 2018; 8:12035. [PMID: 30104639 PMCID: PMC6089997 DOI: 10.1038/s41598-018-30616-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/02/2018] [Indexed: 01/05/2023] Open
Abstract
The energy metabolism of the failing heart is characterized by reduced fatty acid (FA) oxidation and an increase in glucose utilization. However, little is known about how energy metabolism-function relationship is relevant to pathophysiology of heart failure. Recent study showed that the genetic deletion of CD36 (CD36KO), which causes reduction in FA use with an increased reliance on glucose, accelerates the progression from compensated hypertrophy to heart failure. Here, we show the mechanisms by which CD36 deletion accelerates heart failure in response to pressure overload. CD36KO mice exhibited contractile dysfunction and death from heart failure with enhanced cardiac hypertrophy and interstitial fibrosis when they were subjected to transverse aortic constriction (TAC). The pool size in the TCA cycle and levels of high-energy phosphate were significantly reduced in CD36KO-TAC hearts despite an increase in glycolytic flux. De novo synthesis of non-essential amino acids was facilitated in CD36KO-TAC hearts, which could cause a further decline of the pool size. The ingestion of a diet enriched in medium-chain FA improved cardiac dysfunction in CD36KO-TAC hearts. These findings suggest that myocardial FA uptake through CD36 is indispensable for sufficient ATP production and for preventing an increased glycolytic flux-mediated structural remodeling during pressure overload-induced hypertrophy.
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25
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Perakakis N, Ghaly W, Peradze N, Boutari C, Batirel S, Douglas VP, Mantzoros CS. Research advances in metabolism 2017. Metabolism 2018; 83:280-289. [PMID: 29378200 DOI: 10.1016/j.metabol.2018.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 01/19/2018] [Indexed: 11/19/2022]
Affiliation(s)
- Nikolaos Perakakis
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
| | - Wael Ghaly
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA; Department of Physiology, Fayoum University, Fayoum, Egypt
| | - Natia Peradze
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Chrysoula Boutari
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Saime Batirel
- Department of Medical Biochemistry, Faculty of Medicine, Marmara University, Istanbul 34854, Turkey; Genetic and Metabolic Diseases Research Center (GEMHAM), Marmara University, Istanbul 34854, Turkey
| | - Vivian Paraskevi Douglas
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Christos S Mantzoros
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
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26
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da Silva KLC, Camacho AP, Mittestainer FC, Carvalho BM, Santos A, Guadagnini D, Oliveira AG, Saad MJA. Atorvastatin and diacerein reduce insulin resistance and increase disease tolerance in rats with sepsis. JOURNAL OF INFLAMMATION-LONDON 2018; 15:8. [PMID: 29760586 PMCID: PMC5944072 DOI: 10.1186/s12950-018-0184-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 04/30/2018] [Indexed: 12/30/2022]
Abstract
Background Sepsis is one of the leading causes of death among hospitalized patients. At the onset of this condition, there is an over-production of pro-inflammatory mediators that contribute to organ failure and death. The excess production of pro-inflammatory mediators also impairs insulin signaling, which may be a pathophysiological tissue marker of proinflammatory cytokine action before organ failure. Statins and diacerein have pleiotropic effects, such as the blockage of inflammatory signaling pathways, suggesting that these drugs may be an attractive therapeutic or prophylactic strategy against sepsis. The aim of the present study was to investigate whether a statin or diacerein can improve insulin signaling, disease tolerance and survival in sepsis by inhibiting inflammatory pathways. Methods We investigated the effect of these drugs on survival, tissue insulin signaling and inflammatory pathways in the liver and muscle of rats with sepsis induced by cecal ligation and puncture (CLP). Results The results showed that administration of medications, with anti-inflammatory ability, to septic animals increased survival and improved disease tolerance and insulin resistance in the liver and muscle. The treatment also attenuated ER stress, NF-κB, JNK activation and restored glucose-6-phosphatase (G6Pase) levels in the liver. Conclusions Our results indicate that atorvastatin and diacerein treatment can modulate inflammatory pathways and, in parallel, attenuate insulin resistance in sepsis. Since these two drugs have safety profiles and minimal side effects, we suggest that these drugs may be alternative therapies for the prevention or therapies for the treatment of insulin resistance in sepsis, which could potentially reduce mortality in patients with sepsis. Electronic supplementary material The online version of this article (10.1186/s12950-018-0184-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- K L C da Silva
- 1Department of Internal Medicine, State University of Campinas, Campinas, SP Brazil
| | - A P Camacho
- 1Department of Internal Medicine, State University of Campinas, Campinas, SP Brazil
| | - F C Mittestainer
- 1Department of Internal Medicine, State University of Campinas, Campinas, SP Brazil
| | - B M Carvalho
- 2Department of Biology Science, Federal University of Pernambuco, Recife, PE Brazil
| | - A Santos
- 1Department of Internal Medicine, State University of Campinas, Campinas, SP Brazil.,Departamento de Clínica Médica, FCM-UNICAMP, Cidade Universitária Zeferino Vaz, Campinas, SP 13083-887 Brazil
| | - D Guadagnini
- 1Department of Internal Medicine, State University of Campinas, Campinas, SP Brazil
| | - A G Oliveira
- 3Department of Physical Education, São Paulo State University (UNESP), Bioscience Institute, Rio Claro, SP Brazil
| | - M J A Saad
- 1Department of Internal Medicine, State University of Campinas, Campinas, SP Brazil.,Departamento de Clínica Médica, FCM-UNICAMP, Cidade Universitária Zeferino Vaz, Campinas, SP 13083-887 Brazil
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