Ginkgo biloba extract-761 protects myocardium by regulating Akt/Nrf2 signal pathway.
Drug Des Devel Ther
; 13: 647-655, 2019.
Article
in En
| MEDLINE
| ID: mdl-30858695
ABSTRACT
OBJECTIVE:
The aim of this study was to investigate the protective effect and mechanism of Ginkgo biloba extract-761 (EGb 761) in the rat with myocardial ischemia-reperfusion injury (MIRI). MATERIALS ANDMETHODS:
Forty Sprague Dawley rats were randomly divided into following four groups sham group, I/R group and EGb 761 groups (20 and 40 mg/kg). MIRI model was established after 14 days of administration. The myocardial infarct size and myocardial histology were measured and compared. Meanwhile, the levels of creatine kinase-MB (CK-MB), lactate dehydrogenase (LDH), troponin T (TnT), TNF-α, IL-6, IL-1ß, superoxide dismutase (SOD), malondialdehyde (MDA) and glutathione peroxidase (GSH-Px) were evaluated. Western blot was used to detect the expression of Caspase-3, Bax, Bcl-2, HO-1, Nrf2, Akt, p-Akt and nuclear protein Nrf2.RESULTS:
The levels of infarct size, CK-MB, LDH, TnT, TNF-α, IL-6 and IL-1ß in the EGb 761 groups were significantly lower than those in the ischemia/reperfusion (I/R) group. The content of MDA was lower in the myocardium, whereas the activities of SOD and GSH-Px were higher than those in the I/R group. The expressions of Caspase-3 and Bax in the EGb 761 groups were significantly lower than those in the I/R group, whereas the expressions of Bcl-2, p-Akt and HO-1 and nuclear protein Nrf2 in the EGb 761 groups were higher than those in the I/R group.CONCLUSION:
EGb 761 might inhibit the apoptosis of myocardial cells and protect the myocardium by activating the Akt/Nrf2 pathway, increasing the expression of HO-1, decreasing oxidative stress and repressing inflammatory reaction.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Plant Extracts
/
Signal Transduction
/
Proto-Oncogene Proteins c-akt
/
NF-E2-Related Factor 2
/
Heart
/
Myocardium
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Drug Des Devel Ther
Journal subject:
FARMACOLOGIA
/
TERAPIA POR MEDICAMENTOS
Year:
2019
Document type:
Article
Publication country:
NEW ZEALAND
/
NOVA ZELÂNDIA
/
NUEVA ZELANDA
/
NZ