Evaluation of the Vasoplegic impact of Papaverine in the rat aorta
[ X ]
Tarih
2014
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pakistan Medical Assoc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Objective: To identify the degree of vasoplegic affinity of papaverine to rat thoracic aortas following constriction caused by adrenalin, serotonin and potassium chloride in an in-vitro model. Methods: The in vitro vasoplegic efficacy of papaverine against adrenalin (10(-5) M), serotonin (5HT) (10(-4) M), and KCI (60 mM) was assessed, using a rat aortic vasospasm model in an organ bath. First, aortic rings were constricted with a submaximal dose of vasoconstrictor agents. The samples were then incubated with papaverine (3x10(-4) M) for 20 minutes, followed by readministration of the same vasoconstrictor agents. The first vasospastic response (before papaverine incubation) and the new vasoconstrictor responses (after papaverine incubation) of the vessels were then compared. Results: The vasoplegic effect of vasoconstrictor agents in decreasing order was observed as adrenalin>KCI>5HT. This different affinity for the vasoplegic effect is considered to be a temporary impact of the drugs and the maximal inhibition of vasoconstriction was detected for the adrenalin receptor. Conclusion: The relevance of the macromolecules is responsible for the permanent efficacy of the drugs. Different degrees of vasoconstriction were also obtained after papaverine administration, which suggests that different responses can occur as a result of different stimulation of receptor modulators.
Açıklama
Anahtar Kelimeler
Papaverin, Vasoplegic Effect, Vasoconstrictor Agents
Kaynak
Journal of The Pakistan Medical Association
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
64
Sayı
6
