Astragaloside IV alleviates heart failure by promoting angiogenesis through the JAK-STAT3 pathway.
Pharm Biol
; 57(1): 48-54, 2019 Dec.
Article
in En
| MEDLINE
| ID: mdl-30905241
ABSTRACT
CONTEXT Heart failure (HF) is one of the most serious diseases worldwide. Astragaloside IV (ASI) is widely used for the treatment of cardiovascular disease in China. OBJECTIVE:
To evaluate the protective effect of ASI on the HF in a Sprague-Dawley rat model of left coronary artery ligation, and investigate the angiogenesis-related mechanisms. MATERIALS ANDMETHODS:
Left coronary artery was ligated to induce a rat model of HF, and the rats were treated with vehicle (saline) or different doses of ASI (0.1, 0.3 and 1 mg/kg/day) by oral gavage for 6 weeks. Cardiac function was evaluated by echocardiography. Infarct size was determined by triphenyltetrazolium chloride staining. Cardiac vascular density was analyzed by microangiography. Real-time PCR, Western blot and chromatin immunoprecipitation were performed to investigate the mechanisms.RESULTS:
ASI treatment improved the body weight and survival rate of HF rats, as well as the cardiac function of HF rats, with significantly improved ejection fraction (75.27 ± 5.75% vs. 36.26 ± 4.14%) and fractional shortening (45.39 ± 3.66% vs. 17.88 ± 1.32%). ASI reduced the infarct size of the HF rats by 47%. ASI promoted angiogenesis, with increased vascular density (2.08-fold) and induced mRNA expression of CD31 (1.81-fold) and VEGF (2.70-fold) in the ischemic heart. Furthermore, ASI induced the phosphorylation of JAK (1.89-fold) and STAT3 (2.95-fold), as well as the activity of VEGF promoter which was regulated by STAT3. DISCUSSION ANDCONCLUSIONS:
ASI alleviated HF by promoting angiogenesis through JAK-STAT3 pathway, providing novel alternative strategies to prevent HF in the future.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Saponins
/
Triterpenes
/
Coronary Vessels
/
Angiogenesis Inducing Agents
/
Janus Kinases
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Heart Failure
Type of study:
Clinical_trials
/
Prognostic_studies
Limits:
Animals
/
Humans
/
Male
Language:
En
Journal:
Pharm Biol
Year:
2019
Document type:
Article
Affiliation country:
China