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Catalase ameliorates diabetes ‐induced cardiac injury through reduced p65/RelA‐ mediated transcription of BECN1
Abstract Catalase is an antioxidative enzyme that converts hydrogen peroxide (H2O2) produced by superoxide dismutase from highly reactive superoxide (O2−) to water and oxygen molecules. Although recent findings demonstrate that catalase, autophagy and the nuclear factor κB (NF‐κB) signalling pathway are centrally involved in diabetic cardiomyopathy (DCM), the interplay between the three has not been fully characterized. Thus, the mechanism responsible for catalase‐mediated protection against heart injury in diabetic mice was investigated in this study, as well as the role of NF‐κB‐p65 in the regulation of auto...
Source: Journal of Cellular and Molecular Medicine - June 23, 2017 Category: Molecular Biology Authors: Xu Wang, Youli Tao, Yewei Huang, Kungao Zhan, Mei Xue, Ying Wang, Dandan Ruan, Yangzhi Liang, Xiaozhong Huang, Jianjun Lin, Zhiwei Chen, Lingchun Lv, Santie Li, Gen Chen, Yang Wang, Ruijie Chen, Weitao Cong, Litai Jin Tags: Original Article Source Type: research

Overexpressing STAMP2 attenuates adipose tissue angiogenesis and insulin resistance in diabetic ApoE −/−/LDLR−/− mouse via a PPARγ/CD36 pathway
Abstract The aim of this study was to investigate whether overexpression of STAMP2 improves insulin resistance by regulating angiogenesis in adipose tissues. The characteristics of diabetic mice were measured by serial metabolite and pathology tests. Samples were obtained from epididymal, subcutaneous and brown adipose tissues. Histological and morphological analysis demonstrated that STAMP2 gene overexpression reduced adipocyte size, angiogenesis in epididymal and brown adipose tissues. On aortic ring assay, microvessels sprouting from aortas were significantly inhibited after STAMP2 gene overexpression. The cellular effe...
Source: Journal of Cellular and Molecular Medicine - June 19, 2017 Category: Molecular Biology Authors: Feng Wang, Lu Han, Ran ‐ran Qin, Yao‐yuan Zhang, Di Wang, Zhi‐Hao Wang, Meng‐Xiong Tang, Yun Zhang, Ming Zhong, Wei Zhang Tags: Original Article Source Type: research

Hydrogen Sulphide modulating mitochondrial morphology to promote mitophagy in endothelial cells under high ‐glucose and high‐palmitate
Abstract Endothelial cell dysfunction is one of the main reasons for type II diabetes vascular complications. Hydrogen sulphide (H2S) has antioxidative effect, but its regulation on mitochondrial dynamics and mitophagy in aortic endothelial cells under hyperglycaemia and hyperlipidaemia is unclear. Rat aortic endothelial cells (RAECs) were treated with 40 mM glucose and 200 μM palmitate to imitate endothelium under hyperglycaemia and hyperlipidaemia, and 100 μM NaHS was used as an exogenous H2S donor. Firstly, we demonstrated that high glucose and palmitate decreased H2S production and CSE expression in RAECs. Then, the ...
Source: Journal of Cellular and Molecular Medicine - June 13, 2017 Category: Molecular Biology Authors: Ning Liu, Jichao Wu, Linxue Zhang, Zhaopeng Gao, Yu Sun, Miao Yu, Yajun Zhao, Shiyun Dong, Fanghao Lu, Weihua Zhang Tags: Original Article Source Type: research

LncRNA MALAT1 is dysregulated in diabetic nephropathy and involved in high glucose ‐induced podocyte injury via its interplay with β‐catenin
In this study, we found that MALAT1 levels were increased in kidney cortices from C57BL/6 mice with streptozocin (STZ)‐induced diabetic nephropathy, and dynamically regulated in cultured mouse podocytes stimulated with high glucose, which showed a trend from rise to decline. The decline of MALAT1 levels was accompanied with β‐catenin translocation to the nuclei and enhanced expression of serine/arginine splicing factor 1 (SRSF1), a MALAT1 RNA‐binding protein. Further we showed early interference with MALAT1 siRNA partially restored podocytes function and prohibited β‐catenin nuclear accumulation and SRSF1 overexp...
Source: Journal of Cellular and Molecular Medicine - April 26, 2017 Category: Molecular Biology Authors: Mengsi Hu, Rong Wang, Xiaobing Li, Minghua Fan, Jiangong Lin, Junhui Zhen, Liqun Chen, Zhimei Lv Tags: Original Article Source Type: research

Long non‐coding RNA MALAT1 regulates hyperglycaemia induced inflammatory process in the endothelial cells
Abstract To examine whether the long non‐coding RNA (lncRNA) metastasis associated lung adenocarcinoma transcript 1 (MALAT1) is altered in the endothelial cells in response to glucose and the significance of such alteration. We incubated human umbilical vein endothelial cells with media containing various glucose levels. We found an increase in MALAT1 expression peaking after 12 hrs of incubation in high glucose. This increase was associated with parallel increase in serum amyloid antigen 3 (SAA3), an inflammatory ligand and target of MALAT1 and was further accompanied by increase in mRNAs and proteins of inflammatory m...
Source: Journal of Cellular and Molecular Medicine - March 19, 2015 Category: Molecular Biology Authors: Prasanth Puthanveetil, Shali Chen, Biao Feng, Anirudh Gautam, Subrata Chakrabarti Tags: Original Article Source Type: research

Lin28a protects against cardiac ischaemia/reperfusion injury in diabetic mice through the insulin‐PI3K‐mTOR pathway
This study indicates that lin28a overexpression reduces IS, improves cardiac function, decreases cardiomyocyte apoptosis index and alleviates cardiomyocyte mitochondria impairment after cardiac I/R injury in diabetic mice. The mechanism responsible for the effects of lin28a is associated with the insulin‐PI3K‐mTOR dependent pathway.
Source: Journal of Cellular and Molecular Medicine - February 16, 2015 Category: Molecular Biology Authors: Mingming Zhang, Dongdong Sun, Shuang Li, Xietian Pan, Xiaotian Zhang, Di Zhu, Congye Li, Rongqing Zhang, Erhe Gao, Haichang Wang Tags: Original Article Source Type: research

Resveratrol‐enhanced autophagic flux ameliorates myocardial oxidative stress injury in diabetic mice
Abstract Autophagic dysfunction is observed in diabetes mellitus. Resveratrol has a beneficial effect on diabetic cardiomyopathy. Whether the resveratrol‐induced improvement in cardiac function in diabetes is via regulating autophagy remains unclear. We investigated the mechanisms underlying resveratrol‐mediated protection against heart failure in diabetic mice, with a focus on the role of sirtuin 1 (SIRT1) in regulating autophagic flux. Diabetic cardiomyopathy in mice was induced by streptozotocin (STZ). Long‐term resveratrol treatment improved cardiac function, ameliorated oxidative injury and reduced apoptosis in ...
Source: Journal of Cellular and Molecular Medicine - June 1, 2014 Category: Molecular Biology Authors: Bo Wang, Qing Yang, Yuan‐yuan Sun, Yi‐fan Xing, Ying‐bin Wang, Xiao‐ting Lu, Wen‐wu Bai, Xiao‐qiong Liu, Yu‐xia Zhao Tags: Original Article Source Type: research

Overexpression of STAMP2 suppresses atherosclerosis and stabilizes plaques in diabetic mice
Abstract Our research aims to evaluate the function of the STAMP2 gene, an important trigger in insulin resistance (IR), and explore its role in macrophage apoptosis in diabetic atherosclerotic vulnerable plaques. The characteristics of diabetic mice were measured by serial metabolite and pathology tests. The level of STAMP2 was measured by RT‐PCR and Western blot. The plaque area, lipid and collagen content of brachiocephalic artery plaques were measured by histopathological analyses, and the macrophage apoptosis was measured by TUNEL. Correlation of STAMP2/Akt signaling pathway and macrophage apoptosis was validated by...
Source: Journal of Cellular and Molecular Medicine - January 22, 2014 Category: Molecular Biology Authors: Jia Wang, Lu Han, Zhi‐hao Wang, Wen‐yuan Ding, Yuan‐yuan Shang, Meng‐xiong Tang, Wen‐bo Li, Yun Zhang, Wei Zhang, Ming Zhong Tags: Original Article Source Type: research