Fig. 1From: Inhibition of miR-4640-5p alleviates pulmonary hypertension in chronic obstructive pulmonary disease patients by regulating nitric oxide synthase 1MiR-4640-5p is highly expressed in the lung tissues of COPD-PH patients and correlated with severity of COPD-PH. A The expression of miR-4640-5p was examined in the lung tissues of COPD-PH patients (n = 14) and healthy controls (n = 14) by RT-qPCR. B–E Pearson analysis was performed to analysis the correlation between miR-4640-5p expressions and the smoking index (SI), FEV1/FVC%, FEV1% Pred, and pulmonary artery systolic pressure (PASP). *** p < 0.001Back to article page