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Mental stress impai...
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Eriksson, MatsUppsala universitet,Anestesiologi och intensivvård
(författare)
Mental stress impairs endothelial vasodilatory function by a beta-adrenergic mechanism
- Artikel/kapitelEngelska2007
Förlag, utgivningsår, omfång ...
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2009-07-13
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Informa UK Limited,2007
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-17238
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-17238URI
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https://doi.org/10.1080/10623320701421420DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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Mental stress has been shown to impair endothelium-dependent vasodilation (EDV) in the human forearm. The aim of this study was to investigate if this response could be blunted by local infusions of beta-blockade (propranolol), alpha-blockade (phentolamine), or neurogenic blockade. Thirty-one young healthy volunteers underwent forearm blood flow (FBF) measurements, using venous occlusion plethysmography, during local intra-arterial infusions of metacholine (MCh; inducing EDV) and sodium nitroprussid (SNP; inducing endothelial-independent vasodilation [EIDV]), respectively. These measurements were repeated during a 5-min mental arithmetic stress test without (n = 8) or with concomitant local infusion of propranolol (n = 7) or phentolamine (n = 8) in the forearm or during axillary plexus blockade (n = 8). An index of endothelial vasodilatory function (EFI) was calculated as the EDV to EIDV ratio. Mental stress impaired EDV significantly (p < .05), and as a result, EFI was significantly reduced (p = .02). This effect on EFI could be blocked by propranolol and neurogenic blockade but not by phentolamine (p < .05). Thus, impairment of endothelial vasodilatory function induced by mental stress could be blocked by beta-adrenergic, but not alpha-adrenergic, receptor blockade.
Ämnesord och genrebeteckningar
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Beta-Blockade
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Blood Flow
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Endothelium
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Stress
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Vasodilation
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MEDICINE
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MEDICIN
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Johansson, KristinaUppsala universitet,Institutionen för medicinska vetenskaper(Swepub:uu)krjoh030
(författare)
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Sarabi, MahziarUppsala universitet,Institutionen för medicinska vetenskaper
(författare)
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Lind, LarsUppsala universitet,Institutionen för medicinska vetenskaper(Swepub:uu)laeli995
(författare)
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Uppsala universitetAnestesiologi och intensivvård
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Endothelium: Informa UK Limited14:3, s. 151-1561062-33291029-2373
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