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DL-3-n-butylphthalide improves ventricular function, and prevents ventricular remodeling and arrhythmias in post-MI rats

  • Huiliang Qiu
  • Jin Ma
  • Huanlin Wu
  • Chunhua Ding
Original Article
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Abstract

DL-3-n-butylphthalide (NBP) is used in the treatment of ischemic stroke. It was demonstrated NBP also has a cardioprotective effect in acute myocardial infarction (MI) model. However, the chronic effects of NBP on ventricular function, remodeling, and arrhythmias in post-MI stage are unknown. This study was to investigate the effect of NBP on reducing ventricular remodeling and arrhythmias in post-MI stage. Post-MI rats were randomly treated with 100 mg/kg NBP daily (n = 21) or vehicle (n = 21) for 5 weeks. Sham-operated rats were treated with the same dose vehicle (n = 18). Echocardiographic assessment, ventricular arrhythmias inducibility test, morphological and collagen analysis, immunohistochemistry, and western blot were studied. NBP significantly improved cardiac function, inhibited the severity and inducibility of ventricular arrhythmias, reduced cardiac index, fibrosis and hypertrophy, improved the protein expression and distribution of Cx43 gap junction, and upregulated PI3k/Akt/Nrf2 pathway and the downstream antioxidant response elements (ARE), including heme oxygenase-1, Glutathione, Cu-Zn superoxide dismutase, and Fe/Mn superoxide dismutase. These results suggest NBP improves LV function and reduces ventricular arrhythmias by mitigating LV fibrosis, hypertrophy, and Cx43 gap junction remodeling. PI3k/Akt/Nrf2/ARE signaling pathway may contribute to its anti-ventricular remodeling effects.

Keywords

DL-3-n-butylphthalide Ventricular remodeling Connexin43 Nrf2 
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Notes

Author contributions

The conception and design were proposed by Chunhua Ding. Animal experiment was finished by Huiliang Qiu, Jin Ma. Molecular biology experiments, data collection, and analysis were mainly conducted by Huiliang Qiu. Paper was drafted by Huiliang Qiu and reviewed by Chunhua Ding.

Funding information

This study is supported by Guangdong Province Talents Project in Colleges and Universities (No. 2050205, Chunhua Ding) and Joint research project of Guangdong Provincial Department of Science and Technology & Guangdong Provincial Academy of Chinese Medicine (No.2014A020221045, Shen Huang).

Compliance with ethical standards

Ethics

Animal experiments in this study were performed in accordance with standards issued by the State Committee of Science and Technology of the People’s Republic of China and was approved by the Animal Care Committee of Guangdong Provincial Hospital of Chinese Medicine.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Second Clinical Medical CollegeGuangzhou University of Chinese MedicineGuangzhouChina
  2. 2.Cardiac DepartmentGuangdong Provincial Hospital of Chinese MedicineGuangzhouChina
  3. 3.Beijing University of Chinese MedicineBeijingChina
  4. 4.Cardiac DepartmentAerospace Center Hospital, Peking University Aerospace Clinical College of MedicineBeijingChina

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