PR000732 (Project)

Description:Low-molecular-weight (LMW) polycyclic aromatic hydrocarbons (PAHs) are more prevalent in the environment, occupational settings, as well as in secondhand smoke (SHS), when compared to their high molecular weight counterparts, such as benzo[a]pyrene (B[a]P). Previously, we demonstrated that SHS-prevalent LMW PAHs activate p38-MAPK-dependent dysregulation of gap junction intercellular communication (GJIC) and increased cytokines involved in inflammatory lung diseases. However, there is little known about the early mechanistic events leading to inflammation, specifically those mediated through lipid signaling and eicosanoids. Secondhand smoke is a complex mixture and to model this feature in vitro we examined the effects of a binary mixture of 1-methylanthracene (1-MeA) and fluoranthene (Flthn) in C10 cells, a mouse, non-tumorigenic alveolar type II cell line via a global metabolomics approach to evaluate the lipids.