OCLN and acute respiratory distress syndrome: In addition, increased miR-27a-5p expression was observed in patients who died from ARDS and had autopsy-proven diffuse alveolar damage (DAD) compared with patients who did not have DAD.238 BM-MSC-CM decreased miR-193b-5p expression and increased occludin protein expression in the lungs of septic mice model, and alleviated the loss of barrier function.