Objective To investigate the effect of sodium arsenite (NaAsO2) on the expression of miRNA-21 (miR-21) mediated by transcription factor ETS-1 in human normal hepatocytes (L-02).Methods Dose-effect study:The L-02 cells were treated with different doses of NaAsO2 [0.0 (control),2.5,5.0,10.0,20.0,40.0 μmol/L] for 24 h.Time-effect study:L-02 cells were exposed to 0 (control) and 20 μmol/L NaAsO2 for 12,24,36 and 48 h (n =6).ETS-1 and miR-21 were treated with ETS-1 shRNA and miR-21 inhibitor,respectively.The cells treated with ETS-1 shRNA (100 nmol/L) were divided into 4 groups:①ETS-1 shRNA NC treatment alone (control group);②ETS-1 shRNA NC combined with NaAsO2 (20 μ,mol/L) treatment group;③ETS-1 shRNA treatment alone group;④Treatment with ETS-1 shRNA and NaAsO2 (20 μmol/L) group.The MiR-21 inhibitor (100 nmol/L) treated cells were also divided into 4 groups:① miR-21 inhibitor NC treatment (control group);② miR-21 inhibitor NC combined with NaAsO2 (20 μmol/L);③miR-21 inhibitor group;④miR-21 inhibitor combined with NaAsO2 (20 μ mol/L) treatment group.The expression of ETS-1 mRNA and miR-21 were detected by quantitative real-time PCR (qRT-PCR);the protein expression of ETS-1 was detected by Western blotting.Results Dose-effect study:The expression of ETS-1 mRNA in the groups of 0.0 (control),2.5,5.0,10.0,20.0 and 40.0 μmol/L was 1.008 ± 0.028,1.552 ± 0.029,1.697 ± 0.050,1.842 ± 0.077,2.233 ± 0.096 and 2.235 ± 0.092;miR-21 expression was 1.025 ± 0.094,1.552 ± 0.072,1.683 ± 0.066,1.915 ± 0.171,2.337 ± 0.195 and 2.592 ± 0.177;the expression of ETS-1 protein was 1.060 ± 0.045,1.267 ± 0.160,1.386 ± 0.087,1.723 ± 0.196,2.208 ± 0.122 and 2.284 ± 0.224,respectively,and the differences were statistically significant (F =47.797,8.959,65.748,all P ＜ 0.05),the NaAsO2 dose groups were significantly higher than those of the control group (all P ＜ 0.05),and there was a dose-effect relationship.Time-effect study:The expression of ETS-1 mRNA in L-02 cells was 1.253 ± 0.175,1.623 ± 0.220,1.771 ± 0.324 and 1.913 ± 0.251,respectively at 12,24,36 and 48 h;the expression of miR-21 was 1.502 ± 0.111,1.716 ± 0.113,1.979 ± 0.186 and 2.452 ± 0.304;the expression of ETS-1 protein was 1.196 ± 0.105,1.502 ± 0.076,1.651 ± 0.074 and 1.839 ± 0.139,respectively,there were significant differences between the groups (F =14.936,39.180,39.441,all P ＜ 0.05).The expression of various time points of exposure to NaAsO2 was significantly higher than those in the control group (1.044 ± 0.115,1.044 ± 0.124,1.108 ± 0.088,1.053 ± 0.061;1.092 ± 0.061,1.096 ± 0.169,1.024 ± 0.111,1.057 ± 0.146;1.020 ± 0.017,1.049 ± 0.121,1.024 ± 0.089,1.031 ± 0.124,all P＜ 0.05),and there was a time-effect relationship.ETS-1 shRNA and miR-21 inhibitor treatment:compared with ETS-1 shRNA NC combined with NaAsO2 (20 μmol/L),ETS-1 shRNA and NaAsO2 (20 μmol/L) could significantly inhibit the expression of ETS-1 (0.912 ± 0.238 vs 1.641 ± 0.225,P ＜ 0.05),and down-regulated the expression of miR-21 (1.313 ± 0.334 vs 2.363 ± 0.252,P ＜ 0.05).There was no significant difference of ETS-1 mRNA expression between miR-21 inhibitor and NaAsO2 (20.μmol/L) group (1.580 ± 0.077 vs 1.576 ± 0.065,P ＞ 0.05) compared with miR-21 inhibitor NC and NaAsO2 (20 μmol/L).Conclusions The expression of ETS-1 and miR-21 in L-02 cells is significantly higher than those in control.The high expression of ETS-1 mediates NaAsO2-induced miR-21 overexpression,which may be an important molecular mechanism of arsenic-induced expression dysregulation of human hepatic miRNAs and liver damage.

Objective To study the kinematic characteristics of normal subjects and hemiplegic patients in activities of daily living (ADL) by three-dimensional (3D) kinematic analysis. Methods A Vicon motion capture system was used to record 3D kinematic data on 15 normal subjects ( the healthy group) and 10 hemiparetic patients (the hemiplegic group) performing 5 ADL tasks: reaching up, combing, drinking, touching the opposite shoulder and touching the back pocket. The movement times and the 3D motion angles of the sternoclavicular joint,the acromioclavicular joint, the shoulder joint, the elbow joint and the wrist joint were recorded. Three-dimensional joint angles and movement times were compared between the normal group and the hemiplegic group. Results Compared with the normal group, the hemiplegic group had significantly more lateral rotation and abduction of the sternoclavicular joint, medial rotation and extension of the acromioclavicular joint and flexion of the elbow joint.The hemiplegics used significantly less medial rotation of the sternoclavicular joint and adduction/abduction, flexion/extension and lateraL/medial rotation of the shoulder joint. Additionally, the hemiplegic group showed significantly longer movement times. Conclusion Hemiplegics use different joint motor patterns from healthy subjects in completing ADL actions.

Objective:To investigate the effects of early Comfort using Analgesics, minimal Sedatives and maximum Humane care (eCASH) patterns on the risk of negative mood and continuous renal replacement therapy (CRRT)-related adverse events in patients with severe CRRT.Methods:A total of 90 patients with severe CRRT in Shenzhen Integrated Traditional Chinese and Western Medicine Hospital from October 2018 to October 2020 were selected as the study subjects, and they were divided into observation group and control group according to random number table method, with 45 patients in each group. The control group was given routine nursing program, and the observation group was given eCASH mode on the basis of the control group.Nursing satisfaction, CRRT-related adverse events and negative mood scores before and after nursing were compared between 2 groups.Results:The nursing satisfaction degree of the observation group was 86.67% (39/45), significantly higher than that of the control group (66.67%, 30/45), and the difference was statistically significant ( χ2=5.03, P<0.05). After nursing, the Hospital Anxiety and Depression Scale-Anxiety(HADS-A) and Hospital Anxiety and Depression Scale-Depression(HADS-D) scores of the observation group were 5.18 ± 0.67 and 5.27 ± 0.61, respectively, lower than 8.14 ± 1.18, 7.94 ± 1.07 before intervention, and 6.33 ± 0.72, 5.94 ± 0.49 of the control group. Barthel Index(BI) (65.17 ± 8.67) was significantly higher than that before nursing 41.56 ± 6.46 and control group 60.48 ± 6.47, the difference was statistically significant ( t values were 5.74-20.76, all P<0.05). The scores of Visual Analogue Scale(VAS), Present Pain Intensity(PPI), sensory total score and emotional total score of observation group after nursing were 3.24 ± 0.56, 1.18 ± 0.25, 6.38 ± 0.89, 2.68 ± 0.59 significantly lower than those before nursing 6.24 ± 0.87, 3.24 ± 0.56, 11.24 ± 1.81, 6.37 ± 1.04 and 4.36 ± 0.67, 1.31 ± 0.31, 7.26 ± 0.96, 2.98 ± 0.62 of the control group. The difference was statistically significant ( t values were 2.19-20.70, P<0.05). Conclusions:eCASH model can significantly improve the negative emotions of patients with severe CRRT, improve their comfort and reduce the risk of related adverse events, which is worthy of clinical promotion.