β Integrins Mediate FAK Y397 Autophosphorylation of Resistance Arteries during Eutrophic Inward Remodeling in Hypertension

E Heerkens, L Quinn, S Withers, A Heagerty

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    Abstract

    Human essential hypertension is characterized by eutrophic inward remodeling of resistance arteries with little evidence of hypertrophy. Upregulation of αVβ3 integrin is crucial during this process. In order to investigate the role of focal adhesion kinase activation in this process, the level of FAK Y397 autophosphorylation was studied in small blood vessels from young TGR(mRen2)27 animals as blood pressure rose and eutrophic inward remodeling took place. Between weeks 4 and 5 this process was completed and accompanied by a significant increase in FAK phosphorylation compared with normotensive control animals. Phosphorylated-FAK Y397 was immuno-co-precipitated with both �1 and �3 integrin specific antibodies. In contrast, only a fraction (
    Original languageEnglish
    Pages (from-to)305-314
    JournalJournal of Vascular Research
    Volume51
    Issue number4
    DOIs
    Publication statusPublished - 2014

    Keywords

    • integrins, resistance arteries, eutrophic remodeling, hypertension

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