oxidative stress Archives

Announcing a new article publication for Cardiovascular Innovations and Applications journal. This study was aimed at investigating the effect of canagliflozin (Cana) on atherosclerosis and further exploring its potential mechanism. ApoE^−/− mice were fed a Western diet (WD) and randomly divided into a WD group and WD+Cana group. After 15 weeks of canagliflozin treatment, serum levels of fasting insulin and inflammatory cytokines were determined with ELISA kits. HE, Oil Red O, and Masson staining were used to estimate the extent of atherosclerosis. Immunohistochemistry, immunofluorescence, ROS staining, and RT-PCR were used to further investigate Cana’s potential mechanism.

Histological analysis indicated that Cana restrained atherosclerotic plaque development. Furthermore, Cana decreased the percentage of F4/80 positive cells, and the areal density of ROS and relative fluorescence intensity of P62, but enhanced the relative fluorescence intensity of LC3 in the aortic root. Analysis of factors associated with the inflammatory response mediated by AP-1, oxidative stress mediated through the ROS/Nrf2 pathway, and autophagy in the aorta indicated elevated mRNA levels of F4/80, MCP-1, VCAM-1, AP-1, ROS, NOX4, P62, NLRP3, and IL-1β, but diminished mRNA levels of Nrf2, GST, eNOS, and LC3, in the WD+Cana group.

Canagliflozin may attenuate atherosclerosis by decreasing the inflammatory response mediated by AP-1, alleviating oxidative stress through the ROS/Nrf2 pathway, and enhancing autophagy in WD-fed ApoE^−/− mice.

https://www.scienceopen.com/hosted-document?doi=10.15212/CVIA.2023.0093

CVIA is available on the ScienceOpen platform and at Cardiovascular Innovations and Applications. Submissions may be made using ScholarOne Manuscripts. There are no author submission or article processing fees. Cardiovascular Innovations and Applications is indexed in the EMBASE, EBSCO, ESCI, OCLC, Primo Central (Ex Libris), Sherpa Romeo, NISC (National Information Services Corporation), DOAJ, Index Copernicus, Research4Life and Ulrich’s web Databases. Follow CVIA on Twitter @CVIA_Journal; or Facebook.

Qingjuan Zuo, Lili He and Sai Ma et al. Canagliflozin Alleviates Atherosclerosis Progression through Inflammation, Oxidative Stress, and Autophagy in Western Diet-fed ApoE−/− Mice. CVIA. 2024. Vol. 9(1). DOI: 10.15212/CVIA.2023.0093

Announcing a new article publication for Cardiovascular Innovations and Applications journal. Diabetic cardiomyopathy is a multifaceted complication of diabetes that lacks effective treatments. Berberine (BBR), a bioactive compound from Rhizoma coptidis, has potential therapeutic implications, but its precise role in diabetic cardiomyopathy remains to be defined.

In this study, a diabetic cardiomyopathy model was established by administration of a high-fat diet and streptozotocin injection to C57BL/6J mice. Concurrently, the mice received BBR treatment daily for a duration of 8 weeks. After the treatment period, myocardial injury, cardiac function, and the levels of oxidative stress and apoptosis were assessed.

BBR significantly ameliorated cardiac dysfunction and histopathological damage caused by diabetic cardiomyopathy. This treatment also elevated serum superoxide dismutase levels while decreasing malondialdehyde levels. The anti-apoptotic activity of BBR was evidenced by a decrease in TUNEL-positive cells and the percentage of apoptotic cells, as determined by flow cytometry, in conjunction with diminished levels of BCL2-associated X protein/B cell lymphoma 2 (BAX/BCL2) in heart tissues. Mechanistically, BBR was found to ameliorate diabetic cardiomyopathy by upregulating the expression of myocardial methionine sulfoxide reductase A (MsrA) and concurrently suppressing cardiac CaMKII oxidation.

BBR alleviates diabetic cardiomyopathy by inhibiting myocardial apoptosis and oxidative stress through the MsrA and CaMKII signaling pathways.

https://www.scienceopen.com/hosted-document?doi=10.15212/CVIA.2023.0064

Xiaoqiang Sun, Zhuqing Li and Li Wang et al. Berberine Ameliorates Diabetic Cardiomyopathy in Mice by Decreasing Cardiomyocyte Apoptosis and Oxidative Stress. CVIA. 2023. Vol. 8(1). DOI: 10.15212/CVIA.2023.0064

CVIA Journal

Tag: oxidative stress

Canagliflozin Alleviates Atherosclerosis Progression through Inflammation, Oxidative Stress, and Autophagy in Western Diet-fed ApoE −/− Mice

Berberine Ameliorates Diabetic Cardiomyopathy in Mice by Decreasing Cardiomyocyte Apoptosis and Oxidative Stress