Isoalantolactone Regulates the Activity of Mitogen-Activated Protein Kinases and Nuclear-Factor Erythroid 2-Related Factor 2 Pathways to Attenue Angiotensin II-Induced Cardiomyocyte Hypertrophy and Oxidative Stress
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引用次数: 0
Abstract
While isoalantolactone is a sesquiterpene lactone known for its anti-inflammatory and antioxidant activities, its role in cardiac hypertrophy is unknown. This study aimed to explore the role and mechanism of isoalantolactone in cardiomyocyte hypertrophy using angiotensin II-treated H9C2 cells as a model. The Western blot analysis was used to evaluate changes in the cardiac hypertrophy marker proteins atrial natriuretic peptide and brain natriuretic peptide and the activity of nuclear-factor erythroid 2-related factor 2/mitogen-activated protein kinase signaling pathway. Rhodamine-phalloidin staining was used to measure the surface area of cardiomyocytes. Apoptosis and intracellular reactive oxygen species levels were measured by flow cytometry. The results showed that isoalantolactone inhibited angiotensin II-induced H9C2 cell hypertrophy and cardiomyocyte apoptosis and reduced intracellular reactive oxygen species and cytochrome C levels in a dose-dependent manner. Furthermore, isoalantolactone upregulated the nuclear factor erythroid 2-related factor 2/heme oxygenase-1 and inhibited extracellular signal-regulated kinase, c-Jun NH2-terminal kinase, and p38 (a stress-stimulated kinase) activation. Collectively, the findings suggest that isoalantolactone can enhance the antioxidant capacity of H9C2 cells, reduce apoptosis, and inhibit cardiac hypertrophy, and these protective effects may be related to the regulation of nuclear-factor erythroid 2-related factor 2 and mitogen-activated protein kinase pathway activity by isoalantolactone.
期刊介绍:
Current Topics in Nutraceutical Research is an international, interdisciplinary broad-based peer reviewed scientific journal for critical evaluation of research on chemistry, biology and therapeutic applications of nutraceuticals and functional foods. The major goal of this journal is to provide peer reviewed unbiased scientific data to the decision makers in the nutraceutical and food industry to help make informed choices about development of new products.
To this end, the journal will publish two types of review articles. First, a review of preclinical research data coming largely from animal, cell culture and other experimental models. Such data will provide basis for future product development and/or human research initiatives. Second, a critical evaluation of current human experimental data to help market and deliver the product for medically proven use. This journal will also serve as a forum for nutritionists, internists, neurologists, psychiatrists, and all those interested in preventive medicine.
The common denominator of all of the topic to be covered by the journal must include nutraceuticals and/functional food. The following is an example of some specific areas that may be of interest to the journal. i) Role of vitamins, minerals, antioxidants and phytonutrients on cardiovascular health, cancer, diabetes, ocular health, mental health, men’s health, women’s health, infant nutrition, ii) Role of herbals on human health, iii) Dietary supplements and sleep, iv) Components of diet that may have beneficial effect on human health, v) regulation of apoptosis and cell viability, vi) Isolation and characterization of bioactive components from functional foods, vii) Nutritional genomics, and viii) Nutritional proteomics.