Beneficial effects of andrographolide in a rat model of autoimmune myocarditis and its effects on PI3K/Akt pathway

  • Zhang, Qi (Department of Geriatrics, Anhui Provincial Hospital, The First Affiliated Hospital of University of Science and Technology of China, Anhui Institute of Cardiovascular Disease) ;
  • Hu, Li-qun (Department of Geriatrics, Anhui Provincial Hospital, The First Affiliated Hospital of University of Science and Technology of China, Anhui Institute of Cardiovascular Disease) ;
  • Li, Hong-qi (Department of Geriatrics, Anhui Provincial Hospital, The First Affiliated Hospital of University of Science and Technology of China, Anhui Institute of Cardiovascular Disease) ;
  • Wu, Jun (Department of Geriatrics, Anhui Provincial Hospital, The First Affiliated Hospital of University of Science and Technology of China, Anhui Institute of Cardiovascular Disease) ;
  • Bian, Na-na (Department of Geriatrics, Anhui Provincial Hospital, The First Affiliated Hospital of University of Science and Technology of China, Anhui Institute of Cardiovascular Disease) ;
  • Yan, Guang (Department of Geriatrics, Anhui Provincial Hospital, The First Affiliated Hospital of University of Science and Technology of China, Anhui Institute of Cardiovascular Disease)
  • Received : 2018.04.16
  • Accepted : 2018.07.20
  • Published : 2019.03.01


The study is to investigate effects of andrographolide on experimental autoimmune myocarditis (EAM). Lewis rats were immunized on day 0 with porcine cardiac myosin to establish EAM. The EAM rats were treated with either andrographolide (25, 50, 100 mg/kg/day) or vehicle for 21 days. An antigen-specific splenocytes proliferation assay was performed by using the cells from control rats immunized with cardiac myosin. Survival rates, myocardial pathology and myocardial functional parameters (left ventricle end-diastolic pressure, ${\pm}dP/dt$ and left ventricular internal dimension) of EAM rats received andrographolide were significantly improved. Andrographolide treatment caused an decrease in the infiltration of $CD3^+$ and $CD14^+$ positive cells in myocardial tissue. Moreover, andrographolide treatment caused a reduction in the plasma levels of tumor necrosis factor-alpha, interleukin-17 (IL-17) and myosin-antibody, and an increase in the level of IL-10 in EAM rats. Oral administration of andrographolide resulted in the decreased expression of p-PI3K, p-Akt without any change of PI3K and Akt. Further results indicate andrographolide significantly inhibited myosin-induced proliferation in splenocytes, and this effect was inhibited by co-treatment of SC79 (Akt activator). Our data indicate andrographolide inhibits development of EAM, and this beneficial effect may be due to powerful anti-inflammatory activity and inhibitory effect on PI3K/Akt pathway.


Supported by : Anhui Province Nature Science Foundation in the University


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