Protection by Nitrite Against the Ischemic Effects Induced by Acute Myocardial Infarction in Mice

Details

• Personal Author:
  Bowman L ; Ding M ; Gu Y ; Lin X ; Song X ; Su H ; Wang Y ; Yue X ; Zhao J ; Zou B
• Description:
  Objective: This research was aimed to investigate the correct dose of nitrite that would act as a protection against the ischemic effects induced by acute myocardial infarction (AMI). Methods: Mice were randomly divided into a sham-operation group (sham), an AMI operation group (AMI), and a nitrite pretreatment+AMI operation group (N+AMI). Seven days before the AMI operation, mice in the N+AMI group were pretreated with sodium nitrite in drinking water. Results: One week after the AMI operation, serum lactate dehydrogenase (LDH) and creatine kinase (CK) activities in both AMI and N+AMI group were significantly higher than those in the sham group, but there were no significant differences between AMI and N+AMI mice. Contents of inducible nitric oxide synthase (iNOS) in the noninfarct area of the left ventricle in the N+AMI mice were significantly higher than those in the AMI mice, with no difference in the infarct area. Coagulation necrosis in the cardiomyocytes was observed in both AMI and N+AMI mice; however, it was less severe in the N+AMI mice. Western blot analyses showed that nitrite pretreatment resulted in up-regulation of antiapoptotic factors Bcl-2 and p21waf1/cip1 signal proteins, but down-regulation of the proapoptotic factor Bax signal protein. Furthermore, nitrite pretreatment also showed significant alleviation of AMI-induced signal protein expressions of inflammatory factors of NF-KB and oxidative factors of Hsp 70 and HO-1. Conclusion: These results suggest that nitrite show certain protective effects against the ischemic effects induced by AMI in mice, which might be attributed to the synthesis of NO induced by iNOS through up-regulation of antiapoptotic factors and down-regulation of proapoptotic and inflammatory factors. [Description provided by NIOSH]
• Subjects:
  Cardiovascular System Enzymes Laboratories Nitrates Nitric Oxide Occupational Health Safety
• Keywords:
  Acute Myocardial Infarction Author Keywords: Nitrite Cardiac Function Cardiology Cardiovascular System Catalysts Cell Signaling Cellular Effects Dose Response Enzyme Activity Exposure Assessment Gene Expression Heart Attacks Inducible Nitric Oxide Synthase Ischemia Laboratory Animals Laboratory Testing Myocardial Disorders Nitric Oxide Sodium Compounds

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• ISSN:
  2149-2263
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  315-320
• Volume:
  18
• Issue:
  5
• NIOSHTIC Number:
  nn:20050819
• Citation:
  Anatol J Cardiol 2017 Nov; 18(5):315-320
• Contact Point Address:
  Jinshun Zhao, M.D., Ph.D, Department of Preventative Medicine, School of Medicine Ningbo University, 818 Fenghua Road, Ningbo Zhejiang Province, 315211-People's Republic of China
• Email:
  zhaojinshun@nbu.edu.cn
• CAS Registry Number:
  Nitric oxide (CAS RN 10102-43-9) ; Nitrite (CAS RN 14797-65-0) ; Sodium nitrite (CAS RN 7632-00-0)
• Federal Fiscal Year:
  2018
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  True
• Source Full Name:
  Anatolian Journal of Cardiology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fadc6329c01cbb7b5bf4ceed09d3fc6f31373b6cce15111a51283dd40fea0bab0e9088e73778d21379e91311c71746d8023e1e12b1f6c2a9796ebb86d6eea554
• Download URL:
  https://stacks.cdc.gov/view/cdc/211030/cdc_211030_DS1.pdf
• File Type:
  [PDF - 558.91 KB ]