Table VI.

Effect of 0.5 mmol/l H₂O₂ on the apoptotic rates of each type II alveolar epithelial cell group.

	Early apoptotic rate (%)
Group	6 h	12 h	24 h	48 h
Normal control	2.47±0.10	3.10±0.32	6.05±0.38	7.04±0.43
H2O2 injury	7.82±0.15a	16.26±0.59a	23.39±2.78a	50.53±2.17a
miR-21-5p negative transfection	7.66±0.17a	16.04±0.70a	23.58±2.31a	49.41±1.97a
miR-21-5p overexpression	7.68±0.20a	10.73±2.80a,b	16.00±3.44a,b	31.30±3.55a,b

Data are presented as the mean ± standard deviation (n=20).

^aP<0.05, compared with normal control group

^bP<0.05, compared with the H₂O₂ injury group and miR-21-5p negative transfection group. miR, microRNA; H₂O₂, hydrogen peroxide.