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Chin J Integr Med. 2017 Aug;23(8):589-597. doi: 10.1007/s11655-016-2523-0. Epub 2016 Jul 13.

Allicin improves cardiac function by protecting against apoptosis in rat model of myocardial infarction.

Ma LN1,2, Li LD3, Li SC2,4, Hao XM1,2, Zhang JY2, He P2, Li YK2.

Author information

1
Graduate School, Beijing University of Chinese Medicine, Beijing, 100029, China.
2
Laboratory of Academician LI Lian-da, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China.
3
Laboratory of Academician LI Lian-da, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China. lilianda1934@163.com.
4
School of Basic Medical Sciences, Hebei University, Baoding, Hebei Province, 071000, China.

Abstract

OBJECTIVE:

To study the effects of allicin on cardiac function and underlying mechanism in rat model of myocardial infarction (MI).

METHODS:

Ninety-four Wistar rats were randomly assigned to 6 groups (n=14-16 per group): sham control group [underwent thoracotomy without left anterior descending (LAD) occlusion and only received an injection of the same amount of citrate buffer], MI control group (subjected to LAD occlusion and only received an injection of same amount of citrate buffer), positive control group (subjected to LAD occlusion and received an injection of diltiazem hydrochloride at the dose of 1.5 mg/kg), and MI + allicin groups (subjected to LAD occlusion and received an injection of allicin at the doses of 1.2, 1.8, and 3.6 mg/kg). All of the drugs were administered intraperitoneally daily for 21 days. The infarct area was measured by myocardial staining. Hematoxylin-eosin staining was used to observe the pathological changes. Cardiac function parameters were assessed by echocardiography. The myocardial apoptotic index was estimated by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling staining. The expression of Bax and Bcl-2 were detected by quantificational real-time polymerase chain reaction and Western blot.

RESULTS:

Treatment with allicin could attenuate the myocardial infarct area (P<0.05) and relieve the changes of the myocardium. The left ventricular anterior wall diastolic and systolic thicknesses were increased in the allicin-treated groups (P<0.05), while there was no signifificant difference in the left ventricular posterior wall diastolic and systolic thickness (P>0.05). The left ventricular internal diameter in systole, ejection fraction, fractional shortening, and stroke volume were dramatically elevated in allicin-treated rats (P<0.05). Allicin dose-dependently reduced creatine kinase and lactate dehydrogenase levels (P<0.05). The myocardial apoptotic index was also markedly lowered, and Bax expression was signifificantly decreased, whereas Bcl-2 expression exhibited an opposite trend in allicin-treated rats (P<0.05).

CONCLUSION:

Allicin appears to exert a cardioprotective effect that may be linked to blocking Bcl-2/Bax signaling pathway-denpendent apoptosis, further improving cardiac function.

KEYWORDS:

Bcl-2/Bax; allicin; apoptosis; cardiac function; myocardial infarction

PMID:
27412589
DOI:
10.1007/s11655-016-2523-0
[Indexed for MEDLINE]

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