Induction of Cardiac Insulin-Like Growth Factor I Gene Expression in Pressure Overload Hypertrophy

作者: Mark C. Hanson , Kenneth A. Fath , R. Wayne Alexander , P. Delafontaine

DOI: 10.1097/00000441-199308000-00001

关键词: Ventricular pressureMuscle hypertrophyInsulin-like growth factorGene expressionBiologyInternal medicineGrowth factorPressure overloadEndocrinologySomatomedinLeft ventricular hypertrophy

摘要: Molecular mechanisms regulating the cardiac hypertrophic response to increased hemodynamic load are understood poorly. Insulin-like growth factor I (IGF I) is a mitogen that is thought to play a key role in pre-and postnatal growth. To investigate a possible role of IGF I in the cardiac response to pressure overload, rats underwent banding of the ascending aorta immediately above the aortic valve using a hemoclip, or a sham procedure. An analysis of left-ventricular RNA by Northern hybridization using a 32 P-labeled IGF I cDNA …

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