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PubMed Journals Articles About "Myocardial Potency Against Isoproterenol Induced Myocardial Damage Rats" RSS

09:18 EST 12th December 2017 | BioPortfolio

Myocardial Potency Against Isoproterenol Induced Myocardial Damage Rats PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Myocardial Potency Against Isoproterenol Induced Myocardial Damage Rats articles that have been published worldwide.

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Showing "Myocardial potency against Isoproterenol induced myocardial damage rats" PubMed Articles 1–25 of 20,000+

Effect of Atractylodes macrocephala rhizoma on isoproterenol‑induced ventricular remodeling in rats.

Myocardial infarction (MI) is the primary cause of ventricular remodeling (VR). The aim of the present study was to determine the effect of Atractylodis macrocephalae rhizoma (AMR) on VR induced by isoproterenol (ISO) in rats. Male Sprague Dawley rats were randomly divided into the normal control, ISO‑induced and AMR groups. Rats in the ISO‑induced and AMR groups were subcutaneously injected with 85 mg/kg/day ISO for two consecutive days. Compared with the ISO‑induced group, AMR normalized the level...


Diosmin prevents left ventricular hypertrophy, adenosine triphosphatases dysfunction and electrolyte imbalance in experimentally induced myocardial infarcted rats.

Currently, there has been an increased interest globally to identify natural compounds that are pharmacologically potent and have low or no adverse effects for use in preventive medicine. Myocardial infarction is a vital pathological feature resulting in high levels of mortality and morbidity. Left ventricular hypertrophy (LVH), adenosine triphosphatases (ATPases) dysfunction and electrolyte imbalance play a vital role in the pathogenesis of myocardial infarction. This study aims to evaluate the preventive ...

Antioxidation Role of Different Lateral Stellate Ganglion Block in Isoproterenol-Induced Acute Myocardial Ischemia in Rats.

To determine whether stellate ganglion block (SGB) treatment exerts protective effects against isoproterenol (ISO)-induced acute myocardial ischemia (AMI) due to its antioxidant effects, we aimed to evaluate the protective effects of different lateral SGB agents on the tissue antioxidant status in ISO-induced AMI in male Sprague-Dawley rats.


Crude Terpene glycoside component from Radix paeoniae rubra protects against isoproterenol-induced myocardial ischemic injury via activation of the PI3K/AKT/mTOR signaling pathway.

Radix paeoniae rubra, also known as chishao (CS), is a frequently used traditional Chinese medicine that can promote blood circulation to remove blood stasis. It has been widely used for the prevention and treatment of cardiovascular diseases in China. Although terpene glycoside (TG), the major component in CS, has been shown to possess cardioprotective properties, the mechanism underlying CS-TG's preventive effect against myocardial ischemia injury is unknown. This study was conducted to explore the protec...

Protective effect of diethylcarbamazine inhibits NF-κB activation in isoproterenol-induced acute myocardial infarction rat model through the PARP pathway.

The present study investigated the protective effect of diethylcarbamazine in inhibiting nuclear factor (NF)-κB activation in isoproterenol‑induced acute myocardial infarction (AMI) rats through the poly ADP ribose polymerase (PARP) pathway. Male albino Wistar rats were injected subcutaneously with isoproterenol (100 mg/kg/day) for 2 days to induce an AMI model. Diethylcarbamazine (50 mg/kg) was administered by gavage for 12 days prior to the isoproterenol-induced AMI. It was noted that diethylcarbam...

Glycyrrhizic acid attenuates myocardial injury: Involvement of RIP140/NF-kB Pathway.

The present study was designed to evaluate the protective effect of Glycyrrhizic acid (GA) on isoproterenol (ISO)-induced myocardial cardiotoxicity both in rats. Serum was detected for myocardial injury parameters. Heart tissues were prepared for histopathology, oxidative stress, inflammation biomarkers as well as western blot analysis. Results showed that pretreatment with GA apparently decreased levels of myocardial CK-MB and LDH, and alleviated histopathological changes induced by ISO injection. GA exert...

Comprehensive Metabonomic Analysis of Heart Tissue from Isoproterenol-Induced Myocardial Infarction Rat Based on Reversed-Phase and Hydrophilic Interaction Chromatography Coupled to Mass Spectrometry.

We aim to describe the metabonomic characteristics of myocardial infarction rats. High-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry was utilized to develop a metabonomic method of the heart homogenates of myocardial infarction rats. Hydrophilic interaction chromatography allows the analysis of high polar metabolites, providing complementary information to reversed-phase liquid chromatography. We combined reversed phase and hydrophilic interaction chromatographic...

Myocardial ischemic post-conditioning protects the lung against myocardial ischemia/reperfusion-induced damage by activating GSK-3β.

To investigate whether modulating GSK-3β could attenuate myocardial ischemia reperfusion injury (MIRI) induced acute lung injury (ALI) and analyze the underlying mechanism.

Unfolded protein response plays a critical role in heart damage after myocardial ischemia/reperfusion in rats.

The unfolded protein response (UPR) plays a critical role in cell death mediated by ischemia/reperfusion (I/R) injury. However, little is known about the exact mechanism of UPR signaling pathways after myocardial I/R injury in rats. An attempt was therefore made to assess whether the myocardial I/R induced UPR, and which branch of UPR (ATF6, IRE1 and PERK) signal pathway was activated. Sprague-Dawley rats were pretreated with UPR stimulator dithiothreitol (DTT) and UPR inhibitor 4-phenylbutyrate (4PBA) and ...

The mitochondria-targeting peptide elamipretide diminishes circulating HtrA2 in ST-segment elevation myocardial infarction.

The extent of myocardial damage in patients with ST-segment elevation myocardial infarction (STEMI) depends on both the time to reperfusion as well as injury induced by ischaemia-reperfusion resulting in a cascade of cellular and humoral reactions. As a consequence of ischaemia-reperfusion in the heart, the high-temperature requirement serine peptidase 2 (HtrA2) is translocated from the mitochondria to the cytosol, whereupon it induces protease activity-dependent apoptosis mediated via caspases. Myocardial ...

Assessment of aflatoxin B1 myocardial toxicity in rats: mitochondrial damage and cellular apoptosis in cardiomyocytes induced by aflatoxin B1.

Objective The number of deaths from heart disease is increasing worldwide. Aflatoxin B1 (AFB1), a toxin produced by the fungi Aspergillus flavus and Aspergillus parasiticus, is frequently detected in improperly processed/stored human food products. While AFB1 hepatotoxicity and carcinogenic properties have been well addressed, its myocardial toxicity is poorly documented. This study aimed to investigate myocardial toxic activity of AFB1. Methods Ten rats were fed with AFB1 at a dose that did not result in a...

Activation of LXRα improves cardiac remodeling induced by pulmonary artery hypertension in rats.

Inflammatory factors regulated by NF-κB play a significant role in PAH and myocardial hypertrophy. LXR activation may inhibit myocardial hypertrophy via suppressing inflammatory pathways; it is unknown whether LXR is also involved in PAH-induced myocardial hypertrophy or remodeling. To further explore the protective effect of LXR in PAH-induced cardiac hypertrophy and remodeling, a PAH model was developed, and T0901317, an agonist of LXR, was used to examine the effect of LXR activation. PAH rats demonstra...

Influence of coronary architecture on the variability in myocardial infarction induced by coronary ligation in rats.

It has been shown that the size of myocardial infarction in rats created by coronary ligation technique is not uniform, varying from 4% to 65%. We hypothesized that infarct size variability induced by coronary artery ligation might be caused by coronary artery branching pattern. Coronary artery angiography was performed in 50 normal Lewis rats and in chronic myocardial infarction models in which coronary artery was ligated immediately below the left atrial appendage or 2mm distal to the left atrial appendag...

GNAQ TT(-695/-694)GC Polymorphism Is Associated with Increased Gq Expression, Vascular Reactivity, and Myocardial Injury after Coronary Artery Bypass Surgery.

Angiotensin II receptor type 1-mediated activation of the α-subunit of the heterotrimeric Gq protein evokes increased vasoconstriction and may promote hypertrophy-induced myocardial damage. The authors recently identified a TT(-695/-694)GC polymorphism in the human Gq promoter, the GC allele being associated with an increased prevalence of cardiac hypertrophy. In this article, the authors tested whether the TT(-695/-694)GC polymorphism is associated with differences in (1) myocardial Gq protein expression,...

Anthocyanin rich extract of Brassica oleracea L. alleviates experimentally induced myocardial infarction.

Cardioprotective potential of anthocyanin rich red cabbage extract (ARCE) was assessed in H2O2 treated rat neonatal cardiomyoblasts (H9c2 cells) and isoproterenol (ISO) induced rodent model of myocardial infarction. H2O2 treated H9c2 cells recorded cytotoxicity (48-50%) and apoptosis (57.3%), the same were reduced in presence of ARCE (7-10% & 12.3% respectively). Rats pretreated with ARCE for 30 days followed by ISO treatment recorded favourable heart: body weight ratio as compared to ISO treated group. Als...

An experimental study of the protective effect of simvastatin on sepsis-induced myocardial depression in rats.

Many patients with sepsis died of heart failure caused by sepsis-induced myocardial depression. Patients with cardiovascular diseases treated by statins have a lower incidence and mortality of sepsis, although the mechanisms remain elusive. To investigate the protective effect of simvastatin on sepsis-induced myocardial depression and to explore possible mechanisms of action. Thirty six adult male Wistar rats were pretreated with simvastatin (0.2μg/g, q12h) for one week before cecal ligation and puncture (...

Possible Protective Mechanisms exerted by Metformin or Metformin and Vitamin E in Isoproterenol-Induced Cardiac Injury.

Several studies have reported that metformin is cardioprotective for diabetic and non-diabetic ischemic hearts through mechanisms that cannot be entirely attributed to its anti-hyperglycemic effect. This study was designed to investigate the cardioprotective effects of metformin with and without vitamin E after induction myocardial infarction (MI) in rats, using isoproterenol. Administration of metformin or vitamin E significantly reduced the cardiac mass index (P

Cardioprotective Effects of Malvidin Against Isoproterenol-Induced Myocardial Infarction in Rats: A Mechanistic Study.

BACKGROUND Malvidin (alvidin-3-glucoside) is a polyphenol that belongs to the class of natural anthocyanin, which is abundantly found in red wines, colored fruits, and the skin of red grapes. Therefore, the current investigation was intended to evaluate the effect of malvidin against myocardial infarction induced by isoproterenol in the rats. MATERIAL AND METHODS The cardioprotective effects was assessed by determining the effect of malvidin on the activities of endogenous antioxidants - catalase (CAT), sup...

NF-κB-mediated inflammation correlates with calcium overload under arsenic trioxide-induced myocardial damage in Gallus gallus.

Arsenic is a known environmental pollutant and highly hazardous toxin to human health. Due to the biological accumulation, arsenic produces a variety of cardiovascular diseases. However, the exact mechanism is still unclear. Here, our objective was to evaluate myocardial damage and determine the potential mechanism under arsenic exposure in chickens. Arsenic trioxide (As2O3) (1.25 mg/kg BW, corresponding 15 mg/kg feed) was administered as basal diet to male Hy-line chickens (one-day-old) for 4, 8 and 12 w...

Oligomeric proanthocyanidins protect myocardium by mitigating left ventricular remodeling in Isoproterenol induced Post-myocardial infarction.

Extracellular matrix (ECM) remodeling is a major pathophysiological process during post myocardial infarction (MI). The activation, differentiation and proliferation of cardiac fibroblasts to myofibroblasts regulate the expression of ECM proteins. The signalling by Bone morphogenetic protein (BMP-4), an extra cellular ligand of the TGF-β family, has recently been identified as an essential pathway in regulating cardiovascular dysfunctions including myocardial fibrosis. Oligomeric proanthocyanidins (OPC) ar...

Cardiotoxic effect of levofloxacin and ciprofloxacin in rats with/without acute myocardial infarction: Impact on cardiac rhythm and cardiac expression of Kv4.3, Kv1.2 and Nav1.5 channels.

Prolongation of QT interval is possible with fluoroquinolones, yet the underlying contributing factors have not been elucidated. Two widely used fluoroquinolone drugs were at the focus of this study in rats with/without acute myocardial dysfunction (AMI) induced by isoproterenol. The effects of levofloxacin and ciprofloxacin on the cardiac mRNA expression of rat Kv4.3, Kv1.2 and Nav1.5 mRNAs were determined. Administration of the two antibiotics produced dose-dependent changes in ECG parameters that were mo...

Protective effects of ethanolic peel and pulp extracts of Citrus macroptera fruit against isoproterenol-induced myocardial infarction in rats.

Increases in the incidence of cardiovascular disease (CVD) have aroused strong interest in identifying antioxidants from natural sources for use in preventive medicine. Citrus macroptera (C. macroptera), commonly known as "Satkara", is an important herbal and medicinal plant reputed for its antioxidant, nutritious and therapeutic uses. The aim of the present study was to investigate the cardio-protective effects of ethanol extracts of C. macroptera peel and pulp against isoproterenol (ISO)-induced myocardia...

Functional capacity in a rat model of heart failure: impact of myocardial infarction size.

Oxygen uptake (VO2 ) and exercise tolerance in rats classified by myocardial infarction (MI) size are underexplored. The aim of this study was to evaluate VO2 /carbon dioxide production (VCO2 ) and exercise tolerance in rats that have undergone MI. Fourteen weeks after MI or sham surgery, rats underwent an integrated approach to left ventricular function and VO2 /VCO2 , exercise tolerance and skeletal muscle weight evaluation. Based on MI size determination, rats were assigned to sham operated controls (Sha...

Hydrogen Gas Attenuates Myocardial Ischemia Reperfusion Injury Independent of Postconditioning in Rats by Attenuating Endoplasmic Reticulum Stress-Induced Autophagy.

To study the effect of inhaling hydrogen gas on myocardial ischemic/reperfusion(I/R) injury in rats.

Protective effects of circulating microvesicles derived from myocardial ischemic rats on apoptosis of cardiomyocytes in myocardial ischemia/reperfusion injury.

To investigate the effects of circulating microvesicles derived from myocardial ischemia (I-MVs) on apoptosis in myocardial ischemia/reperfusion (I/R) injury in rats.


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