Intestinal Anti-Inflammatory Activity of Paepalantine, an Isocoumarin Isolated from the Capitula of Paepalanthus bromelioides, in the Trinitrobenzenesulphonic Acid Model of Rat Colitis - Di Stasi, Luiz C; Camuesco, Desireé; Nieto, Ana; Vilegas, Wagner; Zarzuelo, Antonio; Galvez, Julio (Planta Medica, 2004)