A standardized bark extract of Pinus pinaster Aiton (Pycnogenol®) attenuated chronic obstructive pulmonary disease via Erk-sp1 signaling pathway. - Shin, Na-Rae; Ryu, Hyung-Won; Ko, Je-Won; Park, Ji-Won; Kwon, Ok-Kyoung; Oh, Sei-Ryang; Kim, Jong-Choon; Shin, In-Sik; Ahn, Kyung-Seop (Journal of Ethnopharmacology, 2016)