Article Publish Status: FREE
Abstract Title:

Perilla Leaf Extract Attenuates Asthma Airway Inflammation by Blocking the Syk Pathway.

Abstract Source:

Mediators Inflamm. 2021 ;2021:6611219. Epub 2021 May 10. PMID: 34045925

Abstract Author(s):

Hui Yang, Wei Sun, Yan-Nan Fan, Shu-Yi Li, Ji-Qiao Yuan, Zi-Qian Zhang, Xu-Yu Li, Ming-Bao Lin, Qi Hou

Article Affiliation:

Hui Yang


(L.) Britton is a classic herbal plant used widely against asthma in China. But its mechanism of beneficial effect remains undermined. In the study, the antiallergic asthma effects of Perilla leaf extract (PLE) were investigated, and the underlying mechanism was also explored. Results showed that PLE treatment significantly attenuated airway inflammation in OVA-induced asthma mice, by ameliorating lung pathological changes, inhibiting recruitment of inflammatory cells in lung tissues and bronchoalveolar lavage fluid (BALF), decreasing the production of inflammatory cytokines in the BALF, and reducing the level of immunoglobulin in serum. PLE treatment suppressed inflammatory response in antigen-induced rat basophilic leukemia 2H3 (RBL-2H3) cells as well as in OVA-induced human peripheral blood mononuclear cells (PBMCs). Furthermore, PLE markedly inhibited the expression and phosphorylation of Syk, NF-B, PKC, and cPLAbothand. By cotreating with inhibitors (BAY61-3606, Rottlerin, BAY11-7082, and arachidonyl trifluoromethyl ketone), results revealed that PLE's antiallergic inflammatory effects were associated with the inhibition of Syk and its downstream signals NF-B, PKC, and cPLA. Collectively, the present results suggested that PLE could attenuate allergic inflammation, and its mechanism might be partly mediated through inhibiting the Syk pathway.

Study Type : Animal Study

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