title: A novel role of exogenous carbon monoxide on protecting cardiac function and improving survival against sepsis via mitochondrial energetic metabolism pathway.
abstract: Septic cardiac dysfunction is the main cause of death in septic patients. Here we investigate whether exogenous carbon monoxide can protect cardiac function and improve survival against sepsis by interfering with mitochondrial energetic metabolism. Male C57BL/6 mice were subjected to cecal ligation and puncture to induce sepsis. Exogenous carbon monoxide delivered from Tricarbonyldichlororuthenium (II) dimer (carbon monoxide releasing molecule II, 8 mg/kg) was used intravenously as intervention. We found that carbon monoxide significantly improved cardiac function (LVEF 80.26 ± 2.37% vs. 71.21 ± 1.37%, P < 0.001; LVFS 43.52 ± 1.92% vs. 34.93 ± 1.28%, P < 0.001) and increased survival rate of septic mice (63% vs. 25%, P < 0.01). This phenomenon might be owing to the beneficial effect of carbon monoxide on abolishing the elevation of cardiac enzyme activity, cytokines levels and apoptosis rate, then attenuating cardiac injury in septic mice. Meanwhile, carbon monoxide significantly reversed the loss of mitochondrial number, effectively inhibited cardiac mitochondrial damage in septic mice by modulating glucose uptake, adenosine triphosphate and lactate content. Furthermore upregulation of peroxisome proliferator-activated receptor-γ coactivator-1α, nuclear respiratory factor 1 and mitochondrial transcription factor A genes in cardiac tissue were revealed in septic mice treated with carbon monoxide. Taken together, the results indicate that exogenous carbon monoxide effectively modulated mitochondrial energetic metabolisms by interfering with expression of peroxisome proliferator-activated receptor-γ coactivator-1α, nuclear respiratory factor 1 and mitochondrial transcription factor A genes, consequently exerted an important improvement in sepsis-induced cardiac dysfunction.
authors: Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China.
authors: Xu
authors: X
authors: Wang
authors: Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China.
authors: Weiting
authors: W
authors: Qin
authors: Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China.
authors: Xuefeng
authors: X
authors: Qiu
authors: Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China.
authors: Jie
authors: J
authors: Cao
authors: Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China.
authors: Dadong
authors: D
authors: Liu
authors: Department of Burn and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu Province, China.
authors: Bingwei
authors: B
authors: Sun
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002248:Carbon Monoxide / Q000627:therapeutic use*; D004268:DNA-Binding Proteins / Q000235:genetics; D004734:Energy Metabolism / Q000187:drug effects*; D005786:Gene Expression Regulation / Q000187:drug effects; D005947:Glucose / Q000378:metabolism; D006321:Heart / Q000187:drug effects* / Q000502:physiology; D019344:Lactic Acid / Q000378:metabolism; D008297:Male; D008810:Mice, Inbred C57BL; D008928:Mitochondria / Q000187:drug effects* / Q000378:metabolism; D024101:Mitochondrial Proteins / Q000235:genetics; D051266:Nuclear Respiratory Factor 1 / Q000235:genetics; D000071248:Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha; D020011:Protective Agents / Q000627:therapeutic use*; D018805:Sepsis / Q000188:drug therapy*; D014157:Transcription Factors / Q000235:genetics
chemical_list: D004268:DNA-Binding Proteins; D024101:Mitochondrial Proteins; C495634:Nrf1 protein, mouse; D051266:Nuclear Respiratory Factor 1; D000071248:Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha; C485290:Ppargc1a protein, mouse; D020011:Protective Agents; D014157:Transcription Factors; C422562:mitochondrial transcription factor A; D019344:Lactic Acid; D002248:Carbon Monoxide; D000255:Adenosine Triphosphate; D005947:Glucose
keywords: Carbon monoxide; Cardiac function; Energy metabolism; Gene expression; Sepsis