Role of tyrosine kinase in dilator responses of rat basilar artery in vivo

Takanari Kitazono, Setsuro Ibayashi, Tetsuhiko Nagao, Kenichiro Fujii, Tomoko Kagiyama, Masatoshi Fujishima

研究成果: ジャーナルへの寄稿記事

20 引用 (Scopus)

抄録

We tested the hypothesis that dilator responses of the basilar artery to endothelium-dependent vasodilators are mediated by activation of tyrosine kinase in vivo. Using a cranial window in anesthetized rats, we examined responses of the basilar artery to acetylcholine and bradykinin. Topical application of acetylcholine and bradykinin increased diameter of the basilar artery in a concentration-related manner. Genistein, an inhibitor of tyrosine kinase, did not affect baseline diameter of the basilar artery but inhibited vasodilatation in response to acetylcholine and bradykinin, without affecting vasodilatation produced by sodium nitroprusside. Tyrphostin 47, another inhibitor of tyrosine kinase, attenuated acetylcholine-induced dilatation of the basilar artery without affecting vasodilatation in response to sodium nitroprusside. Tyrphostin 63, an inactive analogue of tyrphostin 47, did not affect acetylcholine-induced vasodilatation. Sodium orthovanadate, an inhibitor of tyrosine phosphatase, enhanced acetylcholine-induced dilatation of the basilar artery. These results suggest that dilator responses of the basilar artery to endothelium-dependent agonists, acetylcholine and bradykinin, are mediated in large part by activation of tyrosine kinase. Because vasodilatation produced by these agonists is mediated primarily by nitric oxide, activation of tyrosine kinase may have an important role in nitric oxide production in the basilar artery in vivo.

元の言語英語
ページ(範囲)861-865
ページ数5
ジャーナルHypertension
31
発行部数3
DOI
出版物ステータス出版済み - 3 1998

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Basilar Artery
Protein-Tyrosine Kinases
Acetylcholine
Vasodilation
Bradykinin
Nitroprusside
Dilatation
Nitric Oxide
Tyrphostins
Endothelium-Dependent Relaxing Factors
Cholinergic Agonists
Vanadates
Genistein
Phosphoric Monoester Hydrolases
Endothelium
Tyrosine
Sodium

All Science Journal Classification (ASJC) codes

  • Internal Medicine

これを引用

Kitazono, T., Ibayashi, S., Nagao, T., Fujii, K., Kagiyama, T., & Fujishima, M. (1998). Role of tyrosine kinase in dilator responses of rat basilar artery in vivo. Hypertension, 31(3), 861-865. https://doi.org/10.1161/01.HYP.31.3.861

Role of tyrosine kinase in dilator responses of rat basilar artery in vivo. / Kitazono, Takanari; Ibayashi, Setsuro; Nagao, Tetsuhiko; Fujii, Kenichiro; Kagiyama, Tomoko; Fujishima, Masatoshi.

:: Hypertension, 巻 31, 番号 3, 03.1998, p. 861-865.

研究成果: ジャーナルへの寄稿記事

Kitazono, T, Ibayashi, S, Nagao, T, Fujii, K, Kagiyama, T & Fujishima, M 1998, 'Role of tyrosine kinase in dilator responses of rat basilar artery in vivo', Hypertension, 巻. 31, 番号 3, pp. 861-865. https://doi.org/10.1161/01.HYP.31.3.861
Kitazono, Takanari ; Ibayashi, Setsuro ; Nagao, Tetsuhiko ; Fujii, Kenichiro ; Kagiyama, Tomoko ; Fujishima, Masatoshi. / Role of tyrosine kinase in dilator responses of rat basilar artery in vivo. :: Hypertension. 1998 ; 巻 31, 番号 3. pp. 861-865.
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