TLR2 and acute respiratory distress syndrome: In addition, it was noticed that in ALI rats' lung tissues, TLR2 and AP-1 were suppressed after inhibiting the expression of miR-92a, and the expression of AP-1 was decreased after knocking out the TLR2 gene, suggesting that miR-92a/TLR2/AP-1 might be a signaling axis that exerts marked effects on the occurrence and development of ALI.