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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2019, Vol. 24 ›› Issue (12): 1347-1352.doi: 10.12092/j.issn.1009-2501.2019.12.005

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Novel compound HYY-002 inhibits paroxysmal atrial fibrillation in rats

YANG Leixi, FENG Kai, FAN Xueting, WEI Yanchun, LIU Tingting, TANG Yiqun   

  1. Department of Clinical Pharmacy, China Pharmaceutical University, Nanjing 210009, Jiangsu, China
  • Received:2019-08-23 Revised:2019-11-20 Online:2019-12-26 Published:2020-01-07

Abstract:

AIM:To investigate the inhibitory effect of HYY-002 on atrial fibrillation(AF). METHODS:Male SD rats were randomized into 5 groups:normal,model,amiodarone(30 mg/kg,i.p.), low-dose and high-dose HYY-002 group. The rats were administrated Ach-CaCl2 (i.v.) for 10 days to establish rat AF model. From the 4th day, rats in treatment group were treated with amiodarone (30 mg/kg, i.p.) and HYY-002 (2 mg/kg, 10 mg/kg, i.g.) 1 hour before modeling. AF duration and ECG parameters were measured every day. On the 11th day, AERP of every rat were measured and the inflammatory cytokines and miR-135a in plasma were detected. RESULTS:In the model group, AF duration increased persistently and AERP shortened distinctly compared with normal group [(61.83±4.13) vs. (72.70±7.05) ms, P<0.05]. The expression of TNF-α, IL-1 and IL-6 in plasma of model group were higher than normal group (P<0.05). High dose of HYY-002 (10 mg/kg) shortened AF duration effectively [(6.42±1.38) vs. (16.32±1.31) s,P<0.01 vs. model group], relieved the shortening of AERP induced by AF [(77.78±3.79) vs. (61.83±4.13) ms, P<0.01 vs. model group] and lowered the inflammatory cytokines level in plasma. Compared with normal group, the expression of miR-135a in plasma of model group was down-regulated obviously (P<0.01). CONCLUSION: HYY-002 has a significant therapeutic effect on AF, and miR-135a might be involved in the development of AF.

Key words: bradycardia, paroxysmal atrial fibrillation, inflammation, miR-135a

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