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Keywords:

  • RXFP1;
  • adrenergic activation;
  • cardiomyocytes

Cardiac RXFP1 was upregulated upon activation of the α1-adrenergic receptor (AR) through signal pathways involving protein kinase A and C and ERK. In contrast, β1-AR activation downregulated expression of cardiac RXFP1 and it further counteracted the α1-AR-mediated RXFP1 upregulation.