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  • Title: Increased production of endothelin-1 in the hypertrophied rat heart due to pressure overload.
    Author: Yorikane R, Sakai S, Miyauchi T, Sakurai T, Sugishita Y, Goto K.
    Journal: FEBS Lett; 1993 Oct 11; 332(1-2):31-4. PubMed ID: 8405444.
    Abstract:
    Endothelin-1 (ET-1) has been demonstrated to induce hypertrophy in cultured cardiac myocytes. We investigated the production of ET-1 in the heart of aorta-banded rats in vivo. Seven days after the banding of the abdominal aorta, rats developed a significant left ventricular hypertrophy. The tissue content of mature ET-1 and the level of expression of prepro ET-1 mRNA were higher in the left ventricle of aorta-banded rats than in those of sham-operated rats. The expression of prepro ET-1 mRNA in the right ventricle was not different between the two groups. These findings indicate that the production of ET-1 increased in the hypertrophied left ventricle, thereby suggesting the possible involvement of endogenous ET-1 in the development of cardiac hypertrophy due to pressure overload.
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