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JMJD1A Represses the Development of Cardiomyocyte Hypertrophy by Regulating the Expression of Catalase.
Abstract The histone demethylase JMJD family is involved in various physiological and pathological functions. However, the roles of JMJD1A in the cardiovascular system remain unknown. Here, we studied the function of JMJD1A in cardiac hypertrophy. The mRNA and protein levels of JMJD1A were significantly downregulated in the hearts of human patients with hypertrophic cardiomyopathy and the hearts of C57BL/6 mice underwent cardiac hypertrophy induced by transverse aortic constriction (TAC) surgery or isoproterenol (ISO) infusion. In neonatal rat cardiomyocytes (NRCMs), siRNA-mediated JMJD1A knockdown facilitated ISO...
Source: Biomed Res - May 30, 2020 Category: Research Authors: Zang R, Tan Q, Zeng F, Wang D, Yu S, Wang Q Tags: Biomed Res Int Source Type: research

Klotho improves diabetic cardiomyopathy by suppressing the NLRP3 inflammasome pathway
Publication date: Available online 15 August 2019Source: Life SciencesAuthor(s): Xuelian Li, Zhiyang Li, Bingong Li, Xianjie Zhu, Xingjun LaiAbstractAimsNLRP3 inflammasome activation is essential for the development and prognosis of diabetic cardiomyopathy (DCM). The anti-aging protein Klotho is suggested to modulate tissue inflammatory responses. The aim of the present study was to examine the protective effects of Klotho on DCM.Main methodsA streptozotocin-induced diabetes mouse model was established to assess the effects of Klotho in vivo, which was administered for 12 weeks. The characteristics of type 1 DCM were eva...
Source: Life Sciences - August 18, 2019 Category: Biology Source Type: research

Sulfiredoxin involved in the protection of peroxiredoxins against hyperoxidation in the early hyperglycaemia.
Abstract As a direct consequence of hyperglycaemia, the excessive generation of ROS is central to the pathogenesis of diabetic cardiomyopathy. We hypothesize that stimulation of high glucose (HG) results in an increased sulfiredoxin (Srx) expression, which regulates ROS signaling through reducing the hyperoxidized peroxiredoxins (Prxs). We show that hyperoxidized Prxs were initially reduced in the preliminary stage but then dramatically increased in advanced stage and these changes corresponded to a significant increase of Srx expression in the heart of diabetic rats. These time-dependent changes were also confirm...
Source: Experimental Cell Research - February 11, 2017 Category: Cytology Authors: Shi S, Guo Y, Lou Y, Li Q, Cai X, Zhong X, Li H Tags: Exp Cell Res Source Type: research