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The results of subsequent studies showed that c-Abl overexpression enhanced the Ang II-induced apoptosis and synthetic phenotypic transformation of VSMCs in vitro, while inhibition of c-Abl activity with STI571 or Abl1 gene knockout significantly attenuated the Ang II-induced apoptosis and synthetic phenotypic transformation of VSMCs both in vivo and in vitro. Significance Activation of c-Abl may be important for the phenotypic transformation and apoptosis of VSMCs underlying the Ang II-induced AD. Targeted inhibition of c-Abl may prevent Ang II-induced AD via attenuation of the pathological changes of VSMCs.The present pandemic of SARS-CoV-2 has been a tough task for the whole world to deal with. With the absence of specific drugs or vaccines against SARS-CoV-2, the situation is very difficult to control. Apart from the absence of specific therapies, the lack of knowledge about potential therapeutic targets and individual perception is adding to the complications. The present review describes the novel SARS-CoV-2 structure, surface proteins, asymptomatic and symptomatic transmission in addition to the genotype and phenotype of SARS-CoV-2 along with genetic strains and similarity between SARS, MERS and SARS-CoV-2. Therapeutic strategies such as inhibition of the endocytic pathway and suppressing RNA polymerase activity by metal ions, which could be quite beneficial for controlling COVID-19, are outlined. The drug repurposing for SARS-CoV-2 is discussed in detail along with therapeutic classes such as antivirals, antibiotics, and amino quinolones and their probable role in suppressing SARS-CoV-2 with reference to case studies. The ongoing clinical trials both with respect to drug repurposing and vaccines are summarized along with a brief description. The recent advancements and future perspective of ongoing research for therapy and detection of SARS-CoV-2 are provided. The review, in brief, summarizes epidemiology, therapy and the current scenario for combating SARS-CoV-2.Aims Reactive oxygen species (ROS) caused by high glucose (HG) is involved in a lot of diseases including diabetes. However, the underlying mechanism of ROS induction by HG remains unclear. Emerging evidence has shown the 8-oxoguanine glycosylase (OGG1) is the main DNA glycosylase responsible for atherosclerosis, obesity, hepatic steatosis, and insulin resistance, and so on. Our aim was to explore the role of OGG1 on HG-mediated endothelial ROS. Main methods Human umbilical vein endothelial cells (HUVECs) were exposed to HG (30 mM) for different time periods. HG predominantly inhibited OGG1 expression in a time-dependent manner measured by western blotting, qPCR and immunofluorescence. Additionally, HUVECs were cultured with a fluorescent probe, DCFH and DHE, after being subjected to HG. Cell chemiluminescence and flow cytometry results revealed that HG caused endothelial ROS activation. Key findings High glucose remarkably decreased endothelial OGG1 expression. The overexpression of OGG1 significantly reversed HG-mediated PKC and NADPH oxidase activities and ROS levels. Moreover, manipulated expression of PKC significantly contacted the role of OGG1 on NADPH oxidase activation. Significance These results suggest that OGG1 downregulation promoted HG-induced endothelial ROS production and might be a potential clinical treatment target of diabetics.Aims The dysregulation of circular RNAs (circRNAs) has been implicated in the progression of diabetic retinopathy (DR). This study aims to explore the role and underlying mechanism of hsa_circ_0081108 (circCOL1A2) in DR. Materials and methods circCOL1A2, vascular endothelial growth factor (VEGF) and miR-29b expression levels in human retinal microvascular endothelial cells (hRMECs) were detected by quantitative reverse transcription polymerase chain reaction (RT-qPCR) and Western blotting. The biological functions of hRMECs were evaluated by MTT, transwell, tube formation, and vascular permeability assays, respectively. The interaction between miR-29b and circCOL1A2/VEGF was determined by dual luciferase assay. The release of VEGF was examined by ELISA. The in vivo role of circCOL1A2 was further verified in streptozotocin (STZ)-induced DR in mice. The pathological changes and VEGF expression in retinal tissues were detected by hematoxylin and eosin (HE) and immunohistochemical staining. Key findings High glucose (HG) challenge led to increased circCOL1A2, VEGF, MMP-2, MMP-9 levels, but decreased miR-29b level in hRMECs. In addition, circCOL1A2 sponged miR-29b to promote VEGF expression. Silencing of circCOL1A2 inhibited HG-induced proliferation, migration, angiogenesis and vascular permeability of hRMECs via enhancing miR-29b expression. Moreover, circCOL1A2/miR-29b axis participated in HG-induced increase in angiogenesis-related protein expression. Finally, circCOL1A2 knockdown suppressed angiogenesis via regulating miR-29b/VEGF axis in DR mice. Significance circCOL1A2 facilities angiogenesis during the pathological progression of DR via regulating miR-29b/VEGF axis, suggesting that targeting circCOL1A2 may be a potential treatment for DR.Vascular complications are a leading cause of morbidity and mortality among diabetic patients. This work aimed to investigate possible influences of dimethyl fumarate (DMF) on streptozotocin (STZ) diabetes-associated vascular complications in rats, exploring its potential to modulate ROS-TXNIP-NLRP3 inflammasome pathway. Two weeks after induction of diabetes (via a single injection of 50 mg/kg STZ, i.p.), diabetic rats were administered either DMF (25 mg/kg/day) or its vehicle for further eight weeks. Age-matched normal and DMF-administered non-diabetic rats served as controls. DMF treatment elicited a mild ameliorative effect on diabetic glycemia. DMF reduced serum TG and AGE levels and enhanced serum HDL-C concentrations in diabetic rats. Moreover, DMF significantly diminished aortic levels of ROS and MDA and restored aortic GSH, SOD and Nrf2 to near-normal levels in STZ rats. Aortic mRNA levels of TXNIP, NLRP3 and NF-κB p65 in diabetic rats were significantly reduced by DMF treatment. https://www.selleckchem.com/products/ldn193189.html Serum and aortic protein levels of TXNIP and aortic contents of IL-1β, iNOS, NLRP3 and TGF-β1 were significantly lower in DMF-diabetic animals than non-treated diabetic rats.
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