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- W2000702313 abstract "Cardiac overexpression of locally acting muscle-restricted (m)IGF-1 and the consequent downstream activation of NAD + -dependent protein deacetylase sirtuin 1 (SIRT1) trigger potent cardiac antioxidative and antihypertrophic effects. Transient receptor potential (TRP) cation channel A1 (TRPA1) belongs to the TRP ion channel family of molecular detectors of thermal and chemical stimuli that activate sensory neurons to produce pain. Recently, it has been shown that TRPA1 activity influences blood pressure, but the significance of TRPA1 in the cardiovascular system remains elusive. In the present work, using genomic screening in mouse hearts, we found that TRPA1 is a target of mIGF-1/SIRT1 signaling. TRPA1 expression is increased in the heart of cardiac-restricted mIGF-1 transgenic (Tg) mice, both in cardiomyocytes and noncardiomyocytes. In wild-type mice, SIRT1 occupied the TRPA1 promoter, inhibiting its expression, whereas in the presence of the cardiac mIGF-1 transgene, SIRT1 was displaced from the TRPA1 promoter, leading to an increase in its expression. Cardiac-specific ablation of SIRT1 (cardiac-specific knockout) in mIGF-1 Tg mice paradoxically did not increase TRPA1 expression. We have recently reported a systemic “hormetic” effect in mIGF-1 Tg mice, mild hypertension, which was depleted upon cardiac-specific knockout of SIRT1. Administration of the selective TRPA1 antagonist HC-030031 to mIGF-1 Tg mice restored blood pressure to basal levels. We identified TRPA1 as a functional target of the cardiac mIGF-1/SIRT1 signaling pathway, which may have pharmacological implications for the management of cardiovascular stress." @default.
- W2000702313 created "2016-06-24" @default.
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- W2000702313 date "2014-10-01" @default.
- W2000702313 modified "2023-10-17" @default.
- W2000702313 title "The TRPA1 channel is a cardiac target of mIGF-1/SIRT1 signaling" @default.
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- W2000702313 doi "https://doi.org/10.1152/ajpheart.00150.2014" @default.
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