Aloperine improved cardiac dysfunction, decreased serum cTnI and microinfarct areas, and inhibited myocardial apoptosis in rats with coronary microembolisation via the PI3K/Akt pathway.
RCT (n=40)
Randomised into 4 equal groups
Does Aloperine reduce coronary microembolisation-induced myocardial injury in rats?
Aloperine protects against coronary microembolisation-induced myocardial injury in rats by activating the PI3K/Akt signaling pathway.
BACKGROUND: Coronary microembolisation (CME)-induced myocardial apoptosis is a key factor in progressive cardiac dysfunction. Aloperine (ALO) plays a protective role in the cardiovascular system, but its role and the mechanism -underlying its protection against CME are unclear. Therefore, we aimed to verify whether ALO has a protective effect against CME-induced myocardial injury, as well as whether this effect has a relationship with regulation of the PI3K/Akt pathway for rats. METHODS: Forty Sprague-Dawley rats were randomised into 4 equal groups: CME, CME + ALO, CME + ALO + LY294002 (LY) and a Sham group. Twelve hours after surgery, the rats' cardiac function, apoptosis index, microinfarct and serum cardiac-troponin I (cTnI) level were measured. Levels of p-Akt, total Akt, Bcl-2, Bax and cleaved caspase-3 were detected. RESULTS: ALO improved cardiac dysfunction induced by CME, while also decreasing serum levels of cTnI and microinfarct areas. In addition, ALO inhibited myocardial apoptosis, which may have been partially as a result of downregulated cleaved caspase-3 and Bax, upregulated Bcl-2 and increased protein levels in phosphorylated Akt. However, these ALO effects were blocked if ALO was administered along with LY. CONCLUSIONS: ALO can inhibit cardiomyocyte apoptosis and consequently attenuate CME-induced myocardial injury. These functions are realised by activating PI3K/Akt signalling pathway.
Mao et al. (Tue,) conducted a rct in Coronary microembolisation-induced myocardial injury (n=40). Aloperine vs. CME alone, CME + ALO + LY294002, and Sham was evaluated on Cardiac function, apoptosis index, microinfarct area, and serum cTnI level. Aloperine improved cardiac dysfunction, decreased serum cTnI and microinfarct areas, and inhibited myocardial apoptosis in rats with coronary microembolisation via the PI3K/Akt pathway.