Differential cardioprotective effects of salvianolic acid and tanshinone on acute myocardial infarction are mediated by unique signaling pathways

2011 ◽  
Vol 135 (3) ◽  
pp. 662-671 ◽  
Author(s):  
Xiaoying Wang ◽  
Yi Wang ◽  
Min Jiang ◽  
Yan Zhu ◽  
Limin Hu ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Signaling Pathways ◽  
Salvianolic Acid ◽  
Cardioprotective Effects

Preinfarction Angina and Improved Reperfusion of the Infarct-related Artery

1999 ◽  
Vol 82 (S 01) ◽  
pp. 68-72 ◽  
Author(s):  
Alessandro Sciahbasi ◽  
Eugenia De Marco ◽  
Attilio Maseri ◽  
Felicita Andreotti
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Infarct Size ◽  
Ischemic Preconditioning ◽  
Early Reperfusion ◽  
Vast Number ◽  
Beneficial Effects ◽  
Infarct Related Artery ◽  
Cardioprotective Effects ◽  
Collateral Vessels

SummaryPreinfarction angina and early reperfusion of the infarct-related artery are major determinants of reduced infarct-size in patients with acute myocardial infarction. The beneficial effects of preinfarction angina on infarct size have been attributed to the development of collateral vessels and/or to post-ischemic myocardial protection. However, recently, a relation has been found between prodromal angina, faster coronary recanalization, and smaller infarcts in patients treated with rt-PA: those with preinfarction angina showed earlier reperfusion (p = 0.006) and a 50% reduction of CKMB-estimated infarct-size (p = 0.009) compared to patients without preinfarction angina. This intriguing observation is consistent with a subsequent observation of higher coronary recanalization rates following thrombolysis in patients with prodromal preinfarction angina compared to patients without antecedent angina. Recent findings in dogs show an enhanced spontaneous lysis of plateletrich coronary thrombi with ischemic preconditioning, which is prevented by adenosine blockade, suggesting an antithrom-botic effect of ischemic metabolites. Understanding the mechanisms responsible for earlier and enhanced coronary recanalization in patients with preinfarction angina may open the way to new reperfusion strategies.A vast number of studies, globally involving ≈17,000 patients with acute myocardial infarction, have unequivocally shown that an infarction preceded by angina evolves into a smaller area of necrosis compared to an infarct not preceded by angina (Table 1) (1). So far, preinfarction angina has been thought to have cardioprotective effects mainly through two mechanisms: collateral perfusion of the infarctzone (2-4), and ischemic preconditioning of the myocardium (5-7). Here we discuss a further mechanism of protection represented by improved reperfusion of the infarct-related artery.

scholarly journals Cardioprotective effects and pharmacokinetic properties of a controlled release formulation of a novel hydrogen sulfide donor in rats with acute myocardial infarction

2015 ◽  
Vol 35 (3) ◽  
Author(s):  
Ba Hieu Tran ◽  
Chengrong Huang ◽  
Qiuyan Zhang ◽  
Xu Liu ◽  
Shizhou Lin ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Hydrogen Sulfide ◽  
Controlled Release ◽  
Cardiovascular Diseases ◽  
Release Formulation ◽  
Controlled Release Formulation ◽  
Pharmacokinetic Properties ◽  
Cardioprotective Effects

The present study confirms that CR-SPRC is stable, effective and is thus an alternative candidate for hydrogen sulfide-mediated long-term prevention of cardiovascular diseases.

Comparison of cardioprotective effects using ramipril and DanShen for the treatment of acute myocardial infarction in rats

Life Sciences ◽  
2003 ◽  
Vol 73 (11) ◽  
pp. 1413-1426 ◽  
Author(s):  
XinYan Ji ◽  
Benny K.-H. Tan ◽  
Yi Chun Zhu ◽  
Wolfgang Linz ◽  
Yi Zhun Zhu
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Cardioprotective Effects

scholarly journals MicroRNA-486 Alleviates Hypoxia-Induced Damage in H9c2 Cells by Targeting NDRG2 to Inactivate JNK/C-Jun and NF-κB Signaling Pathways

2018 ◽  
Vol 48 (6) ◽  
pp. 2483-2492 ◽  
Author(s):  
Xinling Zhang ◽  
Chunxiang Zhang ◽  
Nan Wang ◽  
Yan Li ◽  
Debing Zhang ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Cell Viability ◽  
Signaling Pathways ◽  
Myocardial Injury ◽  
Cell Counting ◽  
Migration And Invasion ◽  
High Morbidity ◽  
H9c2 Cells ◽  
Myocardial Ischemia And Reperfusion

Background/Aims: Acute myocardial infarction is a serious disease with high morbidity and mortality. microRNAs (miRNAs) have been proved to play an important role in modulating myocardial ischemia and reperfusion injury. Hence, in this study, we constructed H9c2 cell model to elucidate the roles of microRNA-486 (miR-486) in preventing hypoxia-induced damage in H9c2 cells. Methods: H9c2 cells were cultured in hypoxic incubator with 1% O2 to simulate hypoxia and/or transfected with miR-486 mimic, scramble, anti-miR-486, si-N-myc downstream-regulated gene 2 (NDRG2) and their corresponding negative controls (NC). Effects of miR-486 and/or NDRG2 dysregulation on hypoxia-induced myocardial injury in H9c2 cells were investigated by evaluating cell viability, migration, invasion and apoptosis using Cell Counting Kit-8 (CCK-8), transwell assay, flow cytometry, respectively. The proteins expression and RNA expression were detected by western blot and quantitative real time polymerase chain reaction (qRT-PCR), respectively. Results: Hypoxia treatment induced damage in H9c2 cells by decreasing cell viability, migration and invasion and increasing cell apoptosis. Moreover, hypoxia inhibited the expression of miR-486 in H9c2 cells. Overexpression of miR-486 alleviated hypoxia-induced myocardial injury in H9c2 cells, while suppression of miR-486 further aggravated hypoxia-induced injury. Furthermore, NDRG2 expression was negatively regulated by miR-486, and NDRG2 was confirmed as a target of miR-486. Knockdown of NDRG2 alleviated the effects of miR-486 suppression on hypoxia-induced myocardial injury. Besides, knockdown of NDRG2 markedly inhibited the activation of c-Jun N-terminal kinase (JNK) /c-jun and nuclear factor κB (NF-κB) signaling pathways in hypoxia-induced H9c2 cells. Conclusion: Our findings indicate that miR-486 may alleviate hypoxia-induced myocardial injury possibly by targeting NDRG2 to inactivate JNK/c-jun and NF-κB signaling pathways. miR-486 may be a potential target for treating ischemic myocardial injury following acute myocardial infarction.

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