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https://www.selleckchem.com/products/Rolipram.html Endothelial cell insulin resistance contributes to the development of vascular complications in diabetes. Hypoxia-inducible factors (HIFs) modulate insulin sensitivity, and we have previously shown that a negative regulator of HIF activity, CREB-binding protein/p300 (CBP/p300) interacting transactivator-2 (CITED2), is increased in the vasculature of people with type 2 diabetes. Therefore, we examined whether CITED2 regulates endothelial insulin sensitivity. In endothelial cells isolated from mice with a "floxed" mutation in the Cited2 gene, loss of CITED2 markedly enhanced insulin-stimulated Akt phosphorylation without altering extracellular signal-related kinase 1/2 (ERK1/2) phosphorylation. Similarly, insulin-stimulated Akt phosphorylation was increased in aortas of mice with endothelial-specific deletion of CITED2. Consistent with these observations, loss of CITED2 in endothelial cells increased insulin-stimulated endothelial nitric oxide synthase phosphorylation, Vegfa expression, and cell proliferation. EW & NOTEWORTHY Endothelial cell insulin resistance is a major contributor to the development of diabetic complications. In this study, we have shown that CITED2, a transcriptional coregulator, inhibits endothelial insulin signaling through the PI3K/Akt pathway via repression of HIF-dependent IRS-2 expression, and that deletion of CITED2 enhances insulin signaling. Thus, CITED2 represents a novel and promising target to improve insulin sensitivity in endothelial cells and prevent vascular complications in diabetes.We aimed to determine whether interrupting prolonged sitting improves glycemic control and the metabolic profile of free-living adults with obesity. Sixteen sedentary individuals 10 women/6 men; median [interquartile range (IQR)] age 50 (44-53) yr, body mass index (BMI) 32 (32-35.8) kg/m2 were fitted with continuous glucose and activity monitors for 4 wk. After a 1-wk baseline period, participants were

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