Poligalen, a new coumarin from Polygala boliviensis, reduces the release of TNF and IL-6 independent of NF-kB downregulation - Silva, Danielle F.; Alves, Clayton Q.; Brandão, Hugo N.; David, Jorge M.; David, Juceni P.; Silva, Rangel L.; Franchin, Marcelo; Cunha, Thiago Mattar; Martins, Felipe T.; Oliveira, Cecilia (Fitoterapia, 2016)