Figure 1.

Pterostilbene reduces airway inflammation in OVA induced asthmatic mice. (A) The lung morphology was detected by H&E staining and the mucus around the airway was stained by PAS. Scale bar: 5 μm. (B) Inflammation score. (C) The percentage of positive PAS staining. (D) BALF cell count was determined after Diff‐Quik staining. (E) ELISA results of IL‐5, IL‐4, IFN‐γ, and IL‐13 in BALF. (F) ELISA results of IgE and OVA specific IgE in BALF. (G) AHR was measured with methacholine in OVA‐sensitized mice. All data were expressed as mean ± SD. *p < .05, compared with the Control group. ^# p < .05, compared with the OVA group. AHR, airway hyperresponsiveness; BALF, bronchoalveolar lavage fluid; ELISA, enzyme‐linked immunosorbent assay; H&E, haematoxylin and eosin; IFN‐γ, interferon‐γ; IgE, immunoglobulin E; IL, interleukin; OVA, ovalbumin; PAS, periodic acid Schiff