The relationship between serum levels of miR-342 and miR-148a and acute lung injury in sepsis patients

Objectives: To investigate the relationship between serum miR-342, miR-148a, and acute lung injury (ALI) in sepsis patients. Methods: A total of 177 sepsis patients were divided into ALI and non-ALI groups; ALI patients were further classified as mild, moderate, or severe. 162 pneumonia patients served as controls. Serum miR-342 and miR-148a levels were measured using RT-qPCR. Results: Sepsis patients had lower miR-342 and higher miR-148a than controls (p<0.05). Compared with non-ALI patients, the ALI group showed higher miR-148a, PaCO2, APACHE II scores, and RI, but lower miR-342 and OI (p<0.05). miR-342 decreased and miR-148a increased with ALI severity. Correlation analysis revealed that miR-342 was negatively correlated with PaCO2, APACHE II, and RI, and positively with OI, while miR-148a showed opposite trends. The AUC for predicting ALI using miR-342, miR-148a, and their combination was 0.818, 0.775, and 0.896, respectively. Conclusions: Sepsis patients with ALI exhibit low serum miR-342 and high miR-148a, and their combination can effectively predict ALI occurrence.