Obej ctive To inev stigate the situation of hands only cardiopulmonary resuscitation ( CPR) and training effectiveness of CPR in middle school students.Methods By the principle of random stratified cluster sampling,7 687 middle school students in Changsha city were trained on hands only CPR through the scene theoyr teaching and anthropom orphic dummy in this study.The training content icn lued d who was rescued by CPR, whne pait ne ts require CPR,h ow logn cna causei rreversible brain damage, the stna dardized process fo CPR,the position of CP R,the depth of CPR,and the ratios of breath-to-compression. We analyzed the middle school students′awareness of hands only CPR know ledge before and after the train-ing,investigated the middle school studne ts′willign ness and way to accept knowledge of first aid.Re sulst All of 7 687 middle scoh ol students inC hangsha cti y received questionnaire us rvey and trained on hands only CPR,including 3 778(49.15%) boys and 3 909 girls(50.48%).The knowledge of hands only CPR was mainly derived from the book,television,network,and education from schools.Before training,the awareness rates of the knowledge on who was rescued by CPR and the position of CPR were more than 50%,and the awareness rates on the rest of know ledge were less than 50%.The awareness rates on hands only CPR were more than 75% by training, which were significantly increased compared with tho se before training ( P <0.01).Conclusion The knowledge on hands only CPR is very scarce in middle school students in Changsha city,and the awareness on hands only CPR can be significantly improved by the scene theory teaching and an-thropomorphic dummy.

Recent studies indicated that epigenetic abnormality is the important molecular mechanism in leukemia. The change of epigenetic modification occurs in most kinds of leukaemia. Based on the epigenetic modification, the therapies of leukemia with hypomethylating agents and histone deaeetylases inhibitors, which are different from traditional chemotherapy are applied in the treatment of leukemia at beginning. The aim of this article is to summarize the recent advances of DNA methylation and histone modification in leukaemia occurrence, treatment and prognosis.

Objective To explore the relationship between WT1 and prognosis of patients with acute myeloid leukemia (AML) or acute lymphoblastic leukemia (ALL), and to evaluate the possibility of WT1 as a potential marker for monitoring the minimal residual disease (MRD). Methods Bone marrow mononuclear cells from 58 patients with primary AML, 32 patients with primary ALL, 40 patients with AML-complete remission (CR), 28 patients with ALL-CR and 31 patients with trilineage hyperplasia (control group) were collected. Real-time fluorescent quantitative PCR method was used to detect the expression of WT1 in all patients. The expression threshold of WT1 in each group was established. WT1 copy number/ABL copy number ratio×100%denotes the relative expression level of WT1 gene. Results Median relative expression level of WT1 in the control patients was much lower than that in primary AML patients [0.026%(0-0.240%) vs. 20.880 % (3.550 %-48.500 %), Z=-7.74, P<0.000 1]. Relative expression level of WT1 between AML-CR patients [0.102%(0-5.380%)] and primary AML patients had significant difference (Z=-8.34, P<0.000 1). Moreover, the relative expression level rate of the first course in AML patients with higher WT1 expression level (>20.880 %) was 60.7 % (17/28), while the CR rate was 76.7 % (23/30) in those with lower WT1 expression. WT1 expression was increased dramatically in recurrent AML patients. Relative expression level of WT1 was significantly higher in primary ALL patients [0.350 % (0.021 %-10.780 %)] compared with that in the control group Z=-2.58, P<0.05. There was no significant difference in relative expression level of WT1 between ALL and ALL-CR patients [0.038 % (0-2.800 %), P=0.065]. Conclusion WT1 expression level in AML patients is relatively high, which could be used as an effective index of prognosis evaluation and MRD monitoring for AML patients, but not for ALL patients.

Objective Estahlished the method to detect different transcripts of EVI1 gene expression with quantitative PCR and study the expression patterns of EVI1 gene in different leukemia groups to investigate the association between EVI1 gene expression and the incidence and prognosis of leukemia.Methods 60 cases acute myeloid leukemia (AML) and 9 cases normal control were detected in the study,37 cases were male and 32 cases were female,age 10-70 years,median age 42 years,M3 36 cases,M2 16 cases and M4 8 cases according to FAB classification criteria,control samples of nine cases were normal healthy people.Using the quantitative PCR (Taq Man probe) to detect the expression of different transcripts of EVI1 gene.The t test was used to detect the expression difference among different leukemia groups.Results ABL gene was used as internal reference,relative changes of EVI1 gene expression level were detected by EVI1/ABL.In all the control patients,EVI1 gene of different transcription of this expression were detected,expression level of EVI1 gene different transcription was significant with the difference (P ＜ 0.05),transcription 2 and 5 (the same primers) were the lowest,followed for transcription 1 and 6,expression of transcription 3 was the highest.The expression levels of transcripts 2 and 5,1,6,3 were nagative,0.005,0.050 and 0.512 respectively in healthy control samples.In addition,the EVI1 gene expression was negatively correlated with expression of the fusion gene AML-ETO and CBFB-MYH11 in AML.Conclusion The study established a stable,fast and accurate method to detect the expression of EVI1 gene.

Objective To delineate the potency of YC-1 on the proliferation,apoptosis,cell cycle and the protein expression of Caspase-3,-8,-9 in U937 and THP-1 leukemia cell lines.Methods MTT assay was performed to detect proliferation.Flow cytometry was used to measure the apoptosis and cell cycle.The expression of Caspase-3,-8 and-9 were detected by Western blot.Results The MTT assay showed that cell proliferation was inhibited in a concentration-dependent manner in 1.0,3.0,10.0 μmol/L YC-l-treated U937 and THP-1 cells.The survival rates for YC-1 after 24 h in U937 cells were (76.5±4.4) ％,(68.7±6.8) ％,(60.9±13.2) ％ respectively and (94.1±1.4) ％,(81.4±2.0) ％,(72.7±3.0) ％ respectively in THP-1 cell,compared with the control group (100 ％),there were significant differences (F =15.870,126.629,P ＜ 0.01).The apoptosis rates for 1.0,3.0,10.0 μmol/L YC-1 after 24 h were (40.7±1.0) ％,(55.6±2.3) ％,(71.8±1.5) ％respectively in U937 cells and (34.6±2.0) ％,(50.3±3.5) ％,(59.6±4.6) ％ respectively in THP-1 cells.With the control group (4.7±1.4) ％,(1.8±1.0) ％,there were significant difference (F =937.229,200.447,P ＜ 0.01).However,there was no significant difference for cell cycle.In addition,Cleaved Caspase-8 and Cleaved Caspase-3 expression after 1.0,3.0,10.0 μmol/L YC-1 treated for 24 h were significantly higher than control,but the expression of Caspase-9 did not appear significant change in U937 cells.As the same concentration and time point,Cleaved Caspase-3 expression increased with no change of Caspase-9 or Caspase-8 in THP-1 cells.Conclusion YC-1 effectively suppress the proliferation with little effect on cell cycle,but induce the apoptosis,have no effect on cell cycle,and the mechanism of apoptosis may be related to the Caspase activation in U937 and THP-1 cell lines.

Objective To evaluate the short-middle term clinical effects of the fixed platform stabilized prosthesis in the treatment of the elderly patients with rheumatoid arthritis(RA).Methods The clinical data of 53 cases elderly RA patients who were admitted to the People's Hospital of Liuzhou from January 2009 to January 2013 and were treated with fixed platform and stable prosthesis in 62 knees were retrospective analyzed.Results Fifty-three patients were followed up for 24.0-43.0 months with average (25 ± 2.1)months.At the last follow-up,the degree of knee motion was improved significantly compared with the preoperative((116.0±6.0) ° vs.(46.0±7.0)°),the difference was significant(t=35.323,P＜0.01).The HSS score was significantly improved compared with the preoperative ((85.3±7.6) points vs.(50.2±11.3)points),the difference was significant (t=4.002,P＜0.05).At the last follow-up,35 cases (66.0％) of excellent,11 cases (20.8％) of good,and 7 cases (13.2％) of normal.After the operation,all patients obtained obvious improvement in joint pain,swelling,dysfunction,deformity and so on.Conclusion The fixed platform stabilized prosthesis is simple,effective,and less postoperative complications,and it is a better choice for the elderly patients with high flexion activity.

Objective:To investigate the alteration of delayed memory and its relationship with neurogenesis and angiogenesis in vascular dementia (VD) rats after moxibustion therapy. Methods: Two hundred adult male SPF Wistar rats were chosen for the experiment. Thirty-six rats were randomly selected as the sham operation group. Except for rats in the sham operation group (n=36), the others were made into VD models by bilateral common carotid arteries occlusion (BCCAo). After modeling, the 108 survived rats were randomly divided into 3 groups: a model group, a neural stem cells (NSCs) plus endothelial progenitor cells (EPCs) moxibustion group and a NSCs moxibustion group. Co-transplanted implant was transplanted into the rats in the NSCs plus EPCs moxibustion group, and the rats in the NSCs moxibustion group were transplanted by NSCs only. The NSCs plus EPCs moxibustion group and the NSCs moxibustion group received suspended moxibustion therapy at Baihui (GV 20), Dazhui (GV 14) and Shenting (GV 24), (each group was divided into 3 subgroups by the treatment course as 1, 2 and 3 courses). Every group was measured by Morris water maze to evaluate its delayed memory after 3 treatment courses and the rat’s brain was taken out after perfusion of 4% paraformaldehyde one day after 1, 2 and 3 treatment courses, respectively. Marker protein expression was detected by laser confocal microscope to analyze the effect on neurogenesis and angiogenesis. Results: VD rats showed delayed memory in Morris water maze test 3 d after ischemic injury. After 3 courses of moxibustion therapy, VD-induced delayed memory deficits were improved in the NSCs plus EPCs moxibustion group and the NSCs moxibustion group. The expressions of nestin, doublecortin (DCX) and CD34 increased significantly in the two moxibusiton groups after every treatment course (all P＜0.05), which might contribute to the neurogenesis and angiogenesis in hippocampus. In addition, compared with the rats in the NSCs moxibustion group, the expressions of nestin, DCX and CD34 increased significantly in the NSCs plus EPCs moxibustion group (P＜0.05). Conclusion: Moxibustion can reverse VD-induced delayed memory deficits, which may be related to the promotion of neurogenesis and angiogenesis.

Objective:To investigate the correlation of sleep disorders(SD)with serum levels of amyloid β-proteins(Aβ 1-42)and tau phosphorylated at threonine(P-Tau 181)in patients with Alzheimer's disease(AD). Methods:A total of 126 patients with mild and moderate AD who met the inclusion criteria in the memory clinic, sleep clinic and geriatrics department of Jianghan Oilfield General Hospital affiliated to Yangtze University from February 2017 to January 2020 were included.The Pittsburgh Sleep Quality Index(PSQI)was used to evaluate sleep quality.Patients with PSQI scores ≥7 were included in the AD group with sleep disorders(AD-SD group), and patients with PSQI scores <7 were included in the AD group without sleep disorders(AD-NSD group). The Montreal Cognitive Assessment(MoCA), Global Deterioration Scale(GDS), Clinical Dementia Rating(CDR), Hamilton Rating Scale for Depression(HRSD)and Hamilton Anxiety Rating Scale(HAM-A)were used to evaluate cognitive and psychosocial symptoms.During the same time, biological markers such as serum Aβ 1-42, Aβ 1-40 and P-Tau 181 were detected by using enzyme-linked immunosorbent assays.Patients in the two groups received donepezil as an anti-dementia therapy, while the AD-SD group was treated additionally with a targeted sleep intervention.All patients underwent neuropsychological assessment and biochemical tests at enrollment and at the end of the 6th month, and results from all parameters at baseline and at the end of the 6th month were compared.At the end of the six-month treatment, patients in the AD-SD group were further divided into the recovery AD-SD sub-group and the no-recovery AD-SD sub-group based on the extent of sleep improvement. Results:Of the 126 AD patients, 93(73.8%)had sleep disorders.There was no statistically significant difference between the two groups in gender, age, onset age, educational level, course of disease, CDR, GDS, MoCA, Aβ 1-40 or Aβ 1-42/Aβ 1-40(all P>0.05). The scores of PSQI, HRSD and HAM-A and serum levels of Aβ 1-42 and p-Tau 181 showed statistically significant differences between the AD-ND and AD-NSD groups( P<0.05 or P<0.01). At the end of the 6th month, the scores of PSQI, GDS, HRSD and HAM-A and levels of Aβ 1-42, Aβ 1-40, and P-Tau 181 also showed statistically significant differences between the AD-ND and AD-NSD groups( P<0.05 or P<0.01). There was no statistically significant difference in results from other parameters( P>0.05). Spearman correlation analysis showed that PSQI was correlated with HRSD( r=0.271, P=0.009), HAM-A( r=0.479, P=0.000), Aβ 1-42( r=0.470, P=0.000), Aβ 1-42/ Aβ 1-40( r=0.479, P=0.000)and P-Tau 181( r=0.371, P=0.000)in the AD-SD group at baseline.Multivariate Logistic regression model showed that serum Aβ 1-42 and P-Tau 181 levels and HRSD had predictive effects on changes in sleep quality in AD patients( OR=1.897, 1.269 and 1.889, P=0.000, 0.003 and 0.000). The areas under the receiver operating characteristic(ROC)curves for Aβ 1-42, P-Tau 181 and HRSD were 0.926(95% CI: 0.860-0.991), 0.837(95% CI: 0.746-0.927)and 0.854(95% CI: 0.776-0.932), respectively. Conclusions:Sleep quality is correlated with serum Aβ 1-42and P-Tau 181 levels in AD patients.Elevated serum levels of Aβ 1-42 and P-Tau 181 and high HRSD scores are important predictors of SD in AD patients and may be used as indexes for clinical treatment efficacy.

To further explore the result of bilingual teaching in pediatrics,we randomly chose 200 undergraduates of 4 class and released students'questionnaires about bilingual teaching with teaching content before and after class to assess students'understanding of bilingual teaching and analysed appraisal result.We found no significant difference of student score between students accepting bilingual teaching and not accepting the bilingual teaching,but there was difference for English tests and expression level.So we think that students can fully accept the bilingual teaching of pediatrics under the premise with selecting appropriate teaching methods and means.

Objective To explore achieving the consistent method of blood lipid examination by comparing the results of 5 dif-ferent blood lipid detection system commonly used in the use of refernce method to assign freach blood serum before and af-ter calibration.Methods Used the indoor quality control total variation (CV%)to evaluate the 5 blood lipid examination system of the imprecision.Referenced the United States Clinical and Laboratory Standardization Institution (CLSI)9A2 EP program,compared with 54 fresh blood serum in 5 commonly used examination system of Total Cholesterol (TC)and Tri-glyceride (TG),and then estimated the bias between the different detection systems and mean value.8 of the samples were determined by the reference method and estimate the bias of different system.The fresh frozen serum samples assigned by reference method were used to evaluate the above examination system,then compare and estimate the bias again with the same 54 fresh serum samples.Compared the variation of 54 samples in different detection system before and after calibra-tion.Results The TG imprecision of 5 examination system were between 3.76%~23.65%,the TC imprecision between 2.19%~23.43%,that mean the results were good,the r value of TG were between 0.996 7~0.999 6 and the TC were 0.956 2~0.996 7.But there were obvious differences between the results of the systems,and the biggest difference were 14.72%~34.21% in TG and 3.11%~14.57% in TC.After use the serum assignment by reference method,the variation of the systems has been significantly decreased.Conclusion Using the reference method to assign the fresh serum of different blood lipid detection system can effectively improve the consistency of the results.