| First Author | Henderson WR Jr | Year | 2007 |
| Journal | J Exp Med | Volume | 204 |
| Issue | 4 | Pages | 865-77 |
| PubMed ID | 17403936 | Mgi Jnum | J:125607 |
| Mgi Id | MGI:3759207 | Doi | 10.1084/jem.20070029 |
| Citation | Henderson WR Jr, et al. (2007) Importance of group X-secreted phospholipase A2 in allergen-induced airway inflammation and remodeling in a mouse asthma model. J Exp Med 204(4):865-77 |
| abstractText | Arachidonic acid metabolites, the eicosanoids, are key mediators of allergen-induced airway inflammation and remodeling in asthma. The availability of free arachidonate in cells for subsequent eicosanoid biosynthesis is controlled by phospholipase A(2)s (PLA(2)s), most notably cytosolic PLA(2)-alpha. 10 secreted PLA(2)s (sPLA(2)s) have also been identified, but their function in eicosanoid generation is poorly understood. We investigated the role of group X sPLA(2) (sPLA(2)-X), the sPLA(2) with the highest in vitro cellular phospholipolysis activity, in acute and chronic mouse asthma models in vivo. The lungs of sPLA(2)-X(-/-) mice, compared with those of sPLA(2)-X(+/+) littermates, had significant reduction in ovalbumin-induced infiltration by CD4(+) and CD8(+) T cells and eosinophils, goblet cell metaplasia, smooth muscle cell layer thickening, subepithelial fibrosis, and levels of T helper type 2 cell cytokines and eicosanoids. These data direct attention to sPLA(2)-X as a novel therapeutic target for asthma. |
