Circulation · 2005 · 168 citations · 32 references
PDE5A inhibition by sildenafil blunts systolic responses to beta-adrenergic stimulation. This finding supports activity of PDE5A in the human heart and its role in modifying stimulated cardiac function.
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Oral Sildenafil in the Treatment of Erectile Dysfunction
Irwin Goldstein, Tom F. Lue, Harin Padma-Nathan et al. · New England Journal of Medicine · 1998 · 2.1K citations
Jannet F. Lewis, Lawrence C. Kuo, Jeanne G. Nelson et al. · Circulation · 1984 · 733 citations · Full text