AIM:To investigate the mammalian target of rapamycin ( mTOR) signaling pathway as the center playing a role in the crizotinib-induced apoptosis of non-small cell lung cancer (NSCLC) cell line H2228, which represents positive echinoderm microtubule-associated protein-like 4 (EML4)-anaplastic lymphoma kinase (ALK) fusion gene. METHODS:H2228 cells were processed according to different purposes .Fluorescence quantitative PCR is used to ob-serve the gene states .MTT assay is used to detect the cell inhibition rates .The cell apoptosis and cell cycle were analyzed by flow cytometry .The expression and activation levels of the key proteins in the mTOR signaling pathway were determined by Western blotting .RESULTS:Crizotinib promoted the apoptosis of H 2228 cells in a time-and dose-dependent manner . Crizotinib blocked the H2228 cells staying at the G1 phase.In apoptotic H2228 cells processed with crizotinib, the activa-tion level of mTOR was decreased , and the activation levels of the key proteins in upstream and downstream of mTOR path -way were both declined .The expression level of the fusion protein EML 4-ALK variant 3 was not affected , but its active form of p-ALK was significantly suppressed .CONCLUSION:mTOR signaling pathway has a certain relationship with the crizotinib-induced apoptosis of lung cancer cell H 2228, which represents positive EML4-ALK fusion gene.

Objective:To explore clinical significance of sinus heart rate turbulence (HRT) phenomenon in aged pa‐tients with stable angina pectoris (SAP) .Methods :A total of 120 aged SAP patients ,who received 24h DCG in our hospital from Jan 2013 to Oct 2015 ,were selected as SAP group .Meanwhile ,another 144 aged patients ,who re‐ceived 24h DCG examination simultaneously and coronary angiography results were normal ,were regarded as nor‐mal control group .According to coronary lesion severity ,SAP group was further divided into single vessel coronary disease group (single vessel group ,n=35) ,double‐vessel coronary disease group (double‐vessel group ,n=48) and multi‐vessel coronary disease group (multi‐vessel group ,n=37) .The 24h DCG ,HRT indexes ,including turbulence onset (TO) and turbulence slope (TS) ,were measured and compared among all groups .Results:Compared with normal control group ,there was significant rise in TO [(0.77 ± 0.37)% vs .(1.26 ± 0.92)% ] and significant reduc‐tion in TS [(5.45 ± 4.02) ms/RR interval vs .(1.53 ± 0.70) ms/RR interval] ,P<0.01 both ;significant rise in ab‐normal rates of TO (19.44% vs .42.50% ) ,TS (15.97% vs .31.67% ) and TO + TS (11.11% vs .30.83% ) in SAP group ,P<0.01 all .Compared with single vessel group ,there was significant rise in TO [(0.66 ± 0.22)% vs .(1.28 ± 1.11)% vs .(1.46 ± 1.20)% ] and significant reduction in TS [ (2.04 ± 0.82) ms/RR interval vs .(1.66 ± 0.38) ms/RR interval vs .(1.29 ± 0.58) ms/RR interval] in double‐vessel group and multi‐vessel group ,and TO of multi‐vessel group was significantly higher than that of double‐vessel group ,TS of multi‐vessel group was significantly low‐er than that of double‐vessel group , P<0.01 all .Conclusion:Sinus heart rate turbulence can be used as risk predic‐tor for aged patients with stable angina pectoris ,which can provide basis for clinical effective treatment and progno‐sis assessment .

Objective To formulate a comprehensive and reasonable admission nursing assessment sheet with specialty features, so as to improve quality of nursing assessment for patients at admission to Department of Hepatobiliary Surgery. Methods According to characteristics of patients newly admitted to Department of Hepatobiliary Surgery and need of medical service,a nursing assessment sheet suitable for inpatients to Department of Hepatobiliary Surgery was designed,with main contents including basic information, physical examinations for nursing,conditions of daily life,social and psychological conditions,specialty examinations,risk of falling down from bed,and risk of pressure sores. Incidence rate of adverse nursing events like patients' falling down from bed or pressure sores,and the patients' satisfaction were compared before (June 2014 to May 2015) and after (June 2015 to May 2016) application of this sheet. Results After application of this new version of admission nursing assessment sheet,incidence of adverse nursing events happened to inpatients dropped from 2.95% to 0.91% (χ2=4.386,P< 0.05);patients' satisfaction increased from (83.16±10.62) to (90.41±8.66) (t=14.103,P<0.05). Conclusions By using this new version of admission nursing assessment sheet,status of the patients can be assessed in a diversified and multi-dimensional way,so that incidence of falling down from the bed can be lowered,medical risks be decreases,patients' satisfaction be increased,and nursing efficiency be improved,which make it worth promoting in Department of Hepatobiliary Surgery.

Objective To establish a new scientific and rational training method based on the competency for newly recruited nurses and evaluate its training effect. Methods According to the requirements of "Syllabus Standardized Training for Newly Recruited Nurses (Trial)", a new method of standardized training for newly recruited nurses was established with competency as the guide. The teaching model of internet combined with traditional education was adopted to 24 new nurses recruited in September 2015 (observation group). The theory, operation, clinical practice ability and competency of nurses were assessed before and after the training, which were compared with another 24 new nurses recruited in September 2014 (control group). Results There was no significant difference in the theory, operation, clinical comprehensive ability and competency score of nurses in the two groups before the training (P>0.05). After the training, scores of theory, operation, clinical comprehensive ability and competency of nurses in the observation group were higher than those of the control group. The differences were statistically significant (P< 0.05). Conclusions The competency-oriented standardized training for newly recruited nurses is more suitable for clinical practice. Internet teaching has expanded the learning time and space for new nurses, which can effectively improve the competency and clinical practice ability of newly recruited nurses.

OBJECTIVE: To investigate the effect of miR-133b on cardiomyocyte apoptosis induced by myocardial ischemia-reperfusion (I/R) and explore the mechanism. METHODS: Thirty-six adult SD rats were randomized into sham-operated group, I/R group, AdmiR-NC group and AdmiR-133b group, and rat models of myocardial I/R were established in the latter 3 groups with myocardial injections of saline or recombinant adenoviruses in the left ventricle. The expression of MiR-133b was detected using RT-qPCR, and cardiac function of the rats was determined using FDP 1 HRV and BRS analysis system. Serum CK-MB and cTnI levels were determined by ELISA, myocardial injury was evaluated with HE staining, cardiomocyte apoptosis was detected by flow cytometry, and ROS content was determined using a DCFH-DA probe. In the in vitro experiment, H9C2 myocardial cells with hypoxia/reoxygenation (H/R) treatment were transfected with Mir-NC or MiR-133b mimic, and the cellular expression of MiR-133b, cell apoptosis, and ROS content were determined. Dual luciferase reporter assay was performed to verify the targeting relationship between miR-133b and YES1. The effects of pc-YES1 or miR-133b mimic transfection on YES1 expression, apoptosis, and ROS content in H9C2 cells were evaluated. RESULTS: Compared with those in I/R group, miR-133b expression was obviously up-regulated, LVEDP, cTnI and CK-MB levels were significantly decreased, and LVSP, +dp/dt, -dp/dt, HR and CF levels were increased in admiR-133b group ( CONCLUSIONS miR-133b can inhibit I/R-induced myocardial cell apoptosis and ROS accumulation by targeting YES1 to reduce myocardial I/R injury in rats.
Animals ; Apoptosis ; MicroRNAs/genetics* ; Myocardial Reperfusion Injury ; Myocytes, Cardiac ; Rats ; Rats, Sprague-Dawley ; Reactive Oxygen Species