The positive inotropic and chronotropic effects of evodiamine and rutaecarpine, indoloquinazoline alkaloids isolated from the fruits of Evodia rutaecarpa, on the guinea-pig isolated right atria: possible involvement of vanilloid receptors - Kobayashi,Y.; Hoshikuma,K.; Nakano,Y.; Yokoo,Y.; Kamiya,T. (Planta Med, 2001)