Table 2.

PPAR isoforms in inflammatory cells and lung structural cells.

Cell type	PPARα	PPARβ	PPARγ
Macrophage/monocyte	✓ [16, 22]	✓ [22, 33]	✓ [13, 17, 18, 33]
	× [33]	—	× [22]
Eosinophil	✓ [19]	—	✓ [13, 19, 20]
Neutrophils	✓ [22]	✓ [21, 22]	✓ [21]
	—	—	× [22]
Lymphocytes	✓ [22, 24, 25]	✓ [22]	✓ [24, 25]
	—	—	× [22]
Dendritic cells	× [14, 23]	—	✓ [14, 23]
Mast cells	× [26, 34]	✓ [26]	✓ [26]
Epithelial cells	✓ [28]	✓ [28, 29]	✓ [13, 27, 28, 30]
Lung fibroblasts	—	—	✓ [13, 31]
Airway smooth muscle	✓ [32, 35]	× [32, 35]	✓ [13, 32, 35]