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- W2058001894 abstract "Reduced bioavailability of nitric oxide (NO) is a hallmark of diabetes mellitus-induced vascular complications. In the present study we investigated whether a pharmacological increase of endothelial NO synthase (eNOS) production can restore the impaired hindlimb flow in a rat model of severe diabetes. A model of diabetes mellitus was induced in male Sprague–Dawley rats by a single injection of streptozotozin. Rats were treated chronically with the eNOS transcription enhancer AVE3085 (10 mg [kg body weight]−1 day−1; p.o.) or vehicle for 48 days and compared with controls. Endothelial function and arterial BP were investigated in vivo using an autoperfused hindlimb model and TIP-catheter measurement, respectively. Protein production of eNOS, total and phosphorylated vasodilator-stimulated phosphoprotein (VASP) were assessed in their quadriceps muscle tissue, whereas cyclic GMP (cGMP) concentrations were assessed in blood plasma. RNA levels of intracellular and vascular cell adhesion molecules (ICAM-1 and VCAM-1) were measured by real-time PCR. Untreated diabetic rats showed significantly reduced quadriceps muscle contents of eNOS (−64%) and phosphorylated VASP (−26%) protein associated with impaired vascular function (maximum vasodilatation: −30%, p < 0.05) and enhanced production of ICAM-1 (+121%) and VCAM-1 (+156%). Chronic treatment with AVE3085 did not alter arterial BP or severe hyperglycaemia, but did lead to significantly increased production of eNOS (+95%), cGMP (+128%) and VASP phosphorylation (+65%) as well as to improved vascular function (+36%) associated with reduced production of ICAM-1 (−36%) and VCAM-1 (−58%). In a rat model of severe diabetes, pharmacological enhancement of impaired eNOS production and NO–cGMP signalling by AVE3085 restores altered hindlimb blood flow and prevents vascular inflammation." @default.
- W2058001894 created "2016-06-24" @default.
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- W2058001894 date "2008-09-30" @default.
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- W2058001894 title "Enhancement of endothelial nitric oxide synthase production reverses vascular dysfunction and inflammation in the hindlimbs of a rat model of diabetes" @default.
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- W2058001894 doi "https://doi.org/10.1007/s00125-008-1159-9" @default.
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