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Effect of noradrenaline on tail arteries of SHR and WKY under perfusion at constant flow and constant pressureстатья
Информация о цитировании статьи получена из
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Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Machkov V.V., Tarasova O.S., Timin E.N., Rodionov I.M.
- Журнал: Acta physiologica Scandinavica
- Том: 161
- Номер: 1
- Год издания: 1997
- Издательство: Blackwell Scientific Publications
- Местоположение издательства: Oxford, England
- Первая страница: 41
- Последняя страница: 46
- DOI: 10.1046/j.1365-201X.1997.00182.x
- Аннотация: Vesoconstrictor effects of noradrenaline were compared in 6- to 7-month-old spontaneously hypertensive (SHR) and Wistar Kyoto (WKY) rats. A cylindrical segment was dissected from the proximal part of tail artery, cannulated at both ends and perfused alternately either at constant flow or constant pressure. Two series of experiments were performed. In the first series, Vessels were perfused/superfused with Krebs-Henseleit solution. In the second one a modified salt solution was used, in which NaCl was totally replaced by an equimolar amount of KCl. Under constant flow conditions noradrenaline evoked a more prominent resistance increase in SHR compared with WKY independently of the composition of solution (normal or high-K+) used. At constant pressure perfusion with normal solution, the vasoconstrictor response to noradrenaline was more prominent in WKY. Under application of high-K+ solution, vasoconstriction at constant pressure in SHR became more pronounced than that in WKY. We suggest that there is greater wail thickness lumen diameter ratio in SHR vessels and thus different contribution of distension-activated myogenic response is of primary importance for the data obtained.
- Добавил в систему: Тарасова Ольга Сергеевна