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Differential effects of resveratrol on the dilator responses of femoral arteries, ex vivo
Röda Korsets Högskola, Hälsovetenskapliga institutionen. Manchester Metropolitan University, Manchester, UK.
Manchester Metropolitan University, Manchester, UK.
Manchester Metropolitan University, Manchester, UK.
Manchester Metropolitan University, Manchester, UK.
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2019 (Engelska)Ingår i: Nitric oxide, ISSN 1089-8603, E-ISSN 1089-8611, Vol. 92, s. 1-10Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Resveratrol is a plant-derived phytoalexin with antioxidant, anti-inflammatory and cardio-protective properties and may be a promising therapeutic intervention strategy in cardiovascular disease. Here, we investigated the acute direct effects of trans-resveratrol (RV), on acetylcholine (ACh)-induced and flow-mediated dilation (FMD) of isolated pressurized femoral arteries of young (4-month-old) and old (26-month-old) mice. Vessel exposure to RV enhanced ACh (0.01-1.0 mM)-induced dilation (p < 0.05), but not FMD (@ 5-10 μL⋅min-1) (p < 0.05) in both young and old mice. After RV incubation, acute nitric oxide (NO) production by cultured endothelial cells was increased in response to 0.01 mM ACh, but reduced by flow (5-10 μL⋅min-1; p < 0.05). In isolated femoral arteries from endothelial nitric oxide synthase knockout (eNOS-/-) mice, RV had no overall effect on flow mediated dilation, but potentiated ACh induced dilation, that was completely abolished by potassium channel blockers, Apamin and Tram 34 (p < 0.01). We demonstrate that the non-metabolised form of RV stimulates ACh-induced dilation via the NO and EDHF pathways, but not FMD by interaction with the cyclo-oxygenase pathway. Our findings have important implications in the use of RV (for both young and aged) under 'normal' non-diseased physiological states.

Ort, förlag, år, upplaga, sidor
Elsevier, 2019. Vol. 92, s. 1-10
Nyckelord [en]
Ageing, Endothelial function, Flow, Nitric oxide, Pressure myography, Resveratrol
Nationell ämneskategori
Medicinsk bioteknologi
Identifikatorer
URN: urn:nbn:se:rkh:diva-3009DOI: 10.1016/j.niox.2019.07.008PubMedID: 31369814OAI: oai:DiVA.org:rkh-3009DiVA, id: diva2:1341351
Tillgänglig från: 2019-08-08 Skapad: 2019-08-08 Senast uppdaterad: 2019-08-08Bibliografiskt granskad

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Díaz, Miguel

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