Porphyromonas gingivalis is associated with protease-activated receptor-2 upregulation in chronic periodontitis - Fagundes, José Américo G; Monoo, Letícia D; Alves, Vanessa Túbero Euzebio; Pannuti, Cláudio Mendes; Cortelli, Sheila Cavalca; Cortelli, José Roberto; Holzhausen, Marinella (Journal of Periodontology, 2011)