Objective To investigate the expression of microRNA-34a (miR-34a) and silent information regulator 1 (SIRT1) in human lens epithelial cells under H2O2-induced oxidative stress.Methods Different concentrations of H2O2 (0 μmol · L-1,100 μ mol· L-1,200 μmol · L-1,300 μmol · L-1,and 400 μmol · L-1) were used to stimulate SRA01/04 cells for 24 hours.Cell viability was measured using cell counting kit-8 (CCK-8) assay.Cell apoptosis was detected by flow cytometry.Expression levels of miR-34a/SIRT1 were measured by RT-PCR.Results CCK-8 assay showed that a certain concentration range of H2O2 had a proliferation inhibition on SRA01/04 cells.There was a dose response relationship between 100 μmol · L-1 and 400 μmol · L-1.Compared with 0 μmol · L-1 H2O2 group,the difference was statistically significant (all P ＜ 0.01).According to flow cytometry results,apoptotic rate of SRA01/04 cells in control group and H2O2(100-300 μmol · L-1) groups were (6.1 ± 1.2)％,(26.3 ± 1.8)％,(32.5 ± 2.2) ％,and (64.7 ± 5.3) ％.Compared with 0 μmol · L-1 H2 O2 group,the differences were statistically significant (all P ＜ 0.01).RT-PCR test results showed that the expression of miR-34a increased significantly in a dose-dependent manner after the SRA01/04 cells treated with different concentrations of H2O2,while SIRT1 expression level was decreased,there were significant differences compared with control group (all P ＜ 0.001).Conclusion There is a significantly increase of miR-34a and decrease of SIRT1 in human lens epithelial cells under the oxidative stress of a certain concentration of H2O2.Down-regulated expression of miR-34a can increase the survival rate of human lens epithelial cells under H2O2-induced oxidative stress.

Objective:To observe the effect of lung distension stabilization formula combined with Liu Zi Jue exercise on the rehabilitation of patients with lung and kidney deficiency syndrome in stable phase of chronic obstructive pulmonary disease (COPD).Methods:Randomized controlled trial. A total of 179 patients with lung and kidney deficiency syndrome in stable COPD (admitted from April 2019 to April 2022) were enrolled in this study. The patients were randomly divided into western medicine conventional treatment group, combined treatment group and Liu Zi Jue group by random number table method. All the patients in the group received conventional western medicine treatment, and 59 patients in the Liu Zi Jue group received Liu Zi Jue treatment. Combined treatment group to take Liu Zi Jue + Lung distension stabilization formula. Data observation: clinical curative effect and TCM syndrome and total integral change before and after the treatment level of interleukin 8 (IL-8), pulmonary function index changes, COPD patients self-assessment scale (CAT) score, st George's hospital respiratory questionnaire (SGRQ) scores change were observed.Results:The total response rate was 66.67% (40/60) in the conventional treatment group, 83.05% (49/59) in the Liu Zi Jue group and 96.67% (58/60) in the combined treatment group. The total response rate in the combined treatment group was significantly higher than that in the conventional treatment group and the Liu Zi Jue group ( Z=3.76, P<0.01). The Liu Zi Jue group was significantly higher than the conventional western medicine group ( χ2=4.24, P=0.040). After treatment, the symptom score of combined treatment group was significantly lower than that of Liu Zi Jue group and conventional treatment group ( F=14.87, P<0.01), and that of Liu Zi Jue group was significantly lower than that of conventional treatment group ( t=5.87, P<0.01). The scores of CAT and SGRQ were significantly lower than those in the Liu Zi Jue group and conventional treatment group ( F values were 76.72 and 312.36, P<0.01), and those in Liu Zi Jue group were significantly lower than that of the conventional treatment group ( t=4.97, P<0.01). After treatment, the serum IL-8 level of the combined treatment group was significantly lower than that of the Liu Zi Jue group and the conventional treatment group ( F=154.64, P<0.01), and the Liu Zi Jue group was significantly lower than that of the conventional treatment group ( t=11.35, P<0.01). FVC [(2.93±0.60) L vs. (2.49±0.65) L, (2.25±0.63) L, F=20.62], FEV1 [(2.20±0.42) L vs. (1.88±0.41) L, (1.72±0.40) L, F=21.30] and FEV1% [(42.34±4.86) % vs. (38.85±5.00) %, (36.95±4.91) %, F=18.49] were significantly higher than those in the Liu Zi Jue group and conventional treatment group ( P<0.01). The Liu Zi Jue group was higher than that of the conventional treatment group ( t values were 3.76, 2.87, 5.15, P<0.01). Conclusion:Lung distension stabilization formula combined with Liu Zi Jue exercisecan promote the rehabilitation of COPD patients with lung and kidney deficiency syndrome in stable phase, improve the curative effect of patients, improve lung function, relieve symptoms, and improve the quality of life.