Objective To analyze CT manifestations of chest wall Askin tumor and to illustrate its CT diagnostic and differentially diagnostic key points.Methods Eleven cases of chest wall Askin tumors were pathologically confirmed in our hospital between May 2006 and November 2014.Of them,10 cases were children and adolescents,and 9 cases had chest pain as the first symptom.All patients received plain CT scan,while 7 cases received contrast enhanced scan.CT signs of this group were retrospectively analyzed,including the location,quantity,shape,size,density,adjacent tissue invasion and distant metastasis of the tumors.Results CT examination showed a single oval mass on the chest wall in all 11 cases.The tumor was located completely within the thoracic cavity in 10 cases,while a tumor's main part was within thoracic cavity.Nine tumors had long diameters of more than 9 cm.All the tumors were heterogeneous without calcification,wherein 10 cases showed necrosis and cystic degeneration.On contrast enhanced scan,7 cases showed heterogeneously mild to moderate enhancement.All tumors invaded adjacent tissues,including 7 cases of bone damage of a single rib,and 7 cases of pleural involvement,wherein 6 cases had pleural effusion.No remote metastases were found in this group.Conclusions CT manifestations of Askin tumors of chest wall have some characteristics,and familiarity with these manifestations is conducive to diagnosis and differential diagnosis of this disease.

To increase the dissolution rate and extent of valsartan, valsartan nanosuspensions have been prepared. Controlled precipitation assisted with sonication is utilized to prepare valsartan nanosuspensions, the concentration of the drug, stabilizer and costablizer had a great effect on the stability of the preparation according to the pre-experiment. So the method of central composite design-response surface is used to optimize the prescription based on the above three factors and the particle size as the response value. The software Origin 8.0 is used to draw the view of the three-dimensional effects and 2D contour map, to get the optimal prescription area. Valsartan nanosuspensions were prepared. The mean diameter and zeta potential are about 216.6 nm and -57.7 mV, respectively. Compared with the microsuspensions and commercial preparation, the dissolution of valsartan nanosuspensions was faster and the bioavailability can be enhanced to some extent.

Objective To investigate the effect of advanced oxidation protein products (AOPPs) on human renal tubular epithelial cells(HK-2) autophagy.Methods HK-2 cells were stimulated with AOPPs.RT-qPCR and Western blot were used to determine the expression of autophagy related protein LC3-Ⅱ/LC3-Ⅰ,Beclin1 and p62;Western blot was utilized to examine the activation of p38 MAPK pathway.Then p38 MAPK inhibitor (SB203580) was added and co-processed with AOPPs.The change of autophagy was observed Also,autophagy inducer rapamycin was added and co-processed with AOPPs.RT-qPCR and Western blot were used to detect the expression of cell cycle inhibitory protein p27.The cell total protein level was detected by the bicinchoninic acid (BCA) method.The hypertrophy change was observed.Results AOPPs down-regulated the expression of LC3-Ⅱ/LC3-Ⅰ and Beclin1,up-regulated expression of p62 and activated p38 MAPK pathway;in comparison with the AOPPs alone treatment group,the expression of LC3-Ⅱ/LC3-Ⅰ and Beclin in the SB203580 co-processing group was increased,while p62 was decreased;the p27 expression and cells total protein in the sirolimus co-processing group were down-regulated.Conclusion AOPPs inhibits the autophagy of HK-2 cells by activating p38 MAPK pathway and the autophagy inhibition participates in HK-2 cell hypertrophy.

Objective To assess the clinical ultrasound value of layer‐specific strain in evaluation of left ventricular systolic myocardial dysfunction of uremia patients after long‐time dialysis at different time . Methods A total of 68 uremia patients accepted maintenance hemodialysis ( M HD ) were enrolled . T he patients were divided into two groups according to the dialysis duration :dialysis time ＜3 years ( group B , n＝31) and dialysis time ≥3 years ( group C , n ＝37) . T he age and sex mached healthy cases were selected as control group ( group A , n ＝ 30 ) . T he standard dynamic two‐dimensional echocardiographic viewes of apical four‐chamber ,three‐chamber ,two‐chamber and the short‐axis view at three levels of mitral valve , papillary muscle and apex were acquired for three cardiac cycles . T he highest value of peak systolic longitudinal strain ( LS ) ,circumferential strain ( CS ) at different levels ,left venrticular global longitudinal strain ( GLS ) and global circumferential strain ( GCS ) were respectively assessed from endocardium ,mid‐myocardium and epicardium using GE EchoPAC workstation . T he comparisons of those parameters were performed among the 3 groups for differences . T he efficacies of GLS and GCS at different myocardial layers in diagdosing the left ventricular systolic function of M HD patients were analyzed by the ROC curve . Results ① Global transmural parameters :compared with those in group A ,the values of GLS at three myocardial layers in both M HD groups were significantly decreased ( all P ＜ 0 .01 ) ,the value of GLS at three myocardial layers in group C was also decreased ,and was statistically different from that in group B ( P＜0 .01) . Compared with those in group A ,the values of GCS at mid‐myocardium in group B and three myocardial layers in group C were also decreased ( all P ＜0 .01) . T here was no significant difference of GCS between group B and C ( P ＞0 .05) . ②Longitudinal transmural parameters at different levels :the values of LS at three myocardial layers of mitral valve ,papillary muscle and apex were decreased in group B and C compared with those in group A ( P ＜0 .05 or P ＜0 .01) ; T he values of LS at three myocardial layers of mitral valve ,papillary muscle and apical levels were also decreased in group C compared with those in group B ( P ＜0 .05 or P ＜0 .001) . ③Short‐axis transmural parameters at different levels :compared with those in group A ,the value of CS at mid‐myocardium of mitral valve level was decreased in group B ( P ＜0 .05) ,the values of CS at three myocardial layers of the mitral valve level and mid‐myocardium of papillary muscle level and apical level were decreased in group C ( P ＜0 .05 or P ＜0 .01) . Besides ,compared with those in group B ,the values of CS at mid‐myocardium and epicardium of mitral valve level were also decreased in group C ( P ＜0 .05) . ④ROC curve showed that determining left ventricular systolic dysfunction in M HD patients using GLS ,GCS at different myocardial layers ,when the area under the curve ( AUC ) of GLS of intima was 0 .851 ,the cut‐off value was －21 .45% ,the sensitivity was 72 .7% ,and the specificity was 93 .3% ; when the AUC of GCS of mid‐myocardium was 0 .683 ,the cut‐off value was －17 .08% , the specificity was 58 .5% , and the specificity was 83 .3% . Conclusions T he left ventricular systolic myocardial function is progressively damaged with the extended dialysis duration time . Ultrasonic layer‐specific strain technology could be used to quantitatively evaluate left ventricular systolic transmural myocardial dysfunction and might contribute to the evaluation of the severity of left ventricular myocardial dysfunction clinically for a more accurate intervention .

Objective To explore the effect of SIRT1 gene silencing on the radiosensitivity of diffuse large B-cell lymphoma (DLBCL) cells.Methods Immunohistochemistry was used to measure the protein expression of SIRT1 in DLBCL tissues.Western blot was used to measure the expression of SIRT1 in DLBCL cell lines (OCI-Ly3,SU-DHL-2,and SU-DHL-4) and the immortalized B cell line HMy2.CIR.After SU-DHL-4 cells were transfected with si-SIRT1 and si-NC using Lipofectamine 2000,the expression of SIRT1 was determined by Western blot.MTT assay and colony-forming assay were used to assess the cell growth and colony formation ability of SU-DHL-4 cells treated with radiation.The group t-test or univariate analysis of variance was used for comparison between groups.Results The expression rate of SIRT1 in DLBCL tissues was 72.6%(103/140),which was significantly higher than that in reactive lymphoid hyperplasia (RLH) tissues (26.5%,8/25)(P=0.001).The SIRT1 expression was significantly higher in DLBCL cells than in HMy2.CIR cells (P=0.020).After SIRT1 gene silencing by si-SIRT1,the expression of SIRT1 was significantly reduced in SU-DHL-4 cells (P=0.008).Besides,SIRT1 gene silencing significantly reduced the growth rate and colony formation ability of SU-DHL-4 cells treated with radiation (P=0.030).Conclusions SIRT1 gene silencing enhances the radiosensitivity of DLBCL cells,providing a novel target for the radiotherapy of DLBCL.

Objective To establisha multiplex STR genotyping m ethod for autosom al STR and Y-STR loci in forensic biological practice. Methods W idely used autosom al STR loci and Y-STR loci w ere se-lected. A set of PC R prim ers w as designed, and a 5-dye fluorescent labeled STR multiplex PC R reagent kit w as developed. Results A kit w as developed w hich can sim ultaneously detect 15 autosom al STR loci, 10 Y-STR loci, and an Amelogenin. Conclusion The 15 autosom al STR plus 10 Y-STR kit in com bination w ith capillary electrophoresis m ethod w as used to STR genotyping w ith accurate and reli-able results. The new one-step testing kit can potentially be w idely used in forensic cases and D N A databank in the future.

Objective: To investigate the incidence of adolescent depressive symptoms in primary and secondary schools in Guangzhou and the effect of gestational complications on adolescent depression, so to provide scientific basis for depression prevention among adolescent. Methods: Stratified cluster random sampling method was used to select 808 primary and secondary schools in 11 districts of Guangzhou. A total of 96 756 parents of adolescents aged 10-20 were surveyed for adolescents depressive symptoms and maternal gestational complications. Results: The parental reported rates of mild, moderate and major depressive symptoms of adolescents were 5.5%, 3.5%, and 0.5%, respectively. Univariate analysis showed that the severity of adolescent depression symptoms had statistical significance with maternal gestational hypertension, gestational diabetes mellitus, cholestasis, hypothyroidism, hyperthyroidism, gestational anemia and viral hepatitis ( χ 2=12.42~158.91， P <0.01). Multivariate Logistic regression showed that maternal gestational diabetes mellitus ( OR =1.41, 95% CI =1.18- 1.68 ), hypothyroidism during pregnancy ( OR =1.61, 95% CI = 1.15-2.26), and hyperthyroidism during pregnancy ( OR =1.40, 95% CI =1.03-1.91), anemia during pregnancy ( OR = 1.46 , 95% CI =1.35-1.59), and viral hepatitis during pregnancy ( OR =1.67, 95% CI =1.38-2.02) were positively correlated with the severity of adolescent depression symptoms reported by parents( P <0.05). Conclusion Gestational diabetes mellitus, gestational hypothyroidism, gestational hyperthyroidism, gestational anemia and gestational viral hepatitis are associated with adolescent depressive symptom.

Objective: To analyze household determinants of adolescents non suicidal self injury(NSSI), and to provide scientific basis for NSSI intervention amogn adolescents. Methods: Using stratified random cluster sampling method, 15 623 middle school students aged 11-20 were selected from Heilongjiang, Anhui, Hubei, Yunnan, and Guangdong provinces, and non suicidal self injury and related household determinants were investigated by questionnaire. Results: The survey showed that 28.8% of people who had NSSI in the past year accounted;among them,17.6% had 1-4 times(occasional self injury) and 11.2% had 5 times or more(repeated self injury) univariate results showed that whether they were an only child, family type, educational level of the main caregiver, family rearing style, family monthly income per capita, and whether there was a family history of mental illness was associated with adolescents NSSI ( χ 2=6.30-12.16, P <0.05); multivariate Logistic regression analysis showed that whether one child or family parenting style is still significantly related to occasional NSSI( OR =1.11,1.34, P <0.05)after controlling for gender, age, grade, ethnicity, emotional control, resilience, loneliness and social support; whether it is an only child, educational level of the main caregiver and family parenting style are still significantly related to repeated NSSI ( OR =1.19，0.69，1.57， P <0.05); stratified analysis by region shows that the influencing factors of NSSI in adolescents in each region are different. Conclusion Family factors such as the only child and the education level of the main caregiver may be related to the occurrence of adolescents NSSI, but there are regional differences in the family impact of NSSI.

Objective To establish CRRT nursing quality evaluation index system based on the structure-process-outcome theory, so as to guide clinical nursing and evaluate CRRT nursing quality. Methods Based on structure-process-outcome theory,the evaluation index system was established by literature review,expert group discussion, Delphi method and semi-structural interviews with 10 nursing staff. Results The returning rates of questionnaires in the first and second round expert consultation were 94.29％(33/35) and 97.14％(34/35), respectively. The authority coefficient of the experts was 0.89, and the coordination coefficient of experts' opinion was 0.294. The program included 3 first indexes, 15 second index and 73 items. Conclusions The result of the study can provide evaluation for the clinical nursing operation.

Objective:To explore the diagnostic value of contrast-enhanced mammography (CEM) and MRI in differentiating benign and malignant breast lesions based on the 2013 breast imaging reporting and data system (BI-RADS) lexicon and the supplement on CEM.Methods:The clinical and imaging data of 83 patients with breast lesions from March 2019 to April 2022 in the Third Affiliated Hospital of Soochow University were retrospectively analyzed. Totally 100 breast lesions from 83 female patients aged 28 to 78 (49±14) years, were divided into benign lesions (50 lesions) and malignant lesions (50 lesions) according to the pathological results. The t-test, χ 2 test and Fisher′s exact test were used to compare the differences of clinical and imaging features between benign and malignant lesions, and these imaging features which had statistical differences were established CEM and MRI models by multivariate logistic regression analysis respectively. The receiver operating characteristic curves and the area under the curve (AUC) were used to assess the diagnostic efficacy of two models in differentiating benign and malignant breast lesions. Using the DeLong test compared the AUC. Results:Multivariate logistic regression analysis showed that associated features (OR=9.075,95%CI 1.430-57.570, P=0.019), lesion conspicuity (OR=6.180,95%CI 2.608-14.646, P<0.001), mass margin (OR=2.193,95%CI 1.405-3.422, P=0.001) and calcification distribution (OR=2.147,95%CI 1.157-3.986, P=0.015) were independent predictors of differentiating benign and malignant breast lesions in CEM, and then the predictive model of CEM was constructed. Time-signal intensity curve (OR=9.230, 95%CI 3.178-26.805, P<0.001), associated features (OR=5.289,95%CI 1.343-20.831, P=0.017) and mass margin (OR=2.192,95%CI 1.336-3.597, P=0.002) were independent predictors of differentiating benign and malignant breast lesions in MRI, and the predictive model of MRI was constructed. The AUC of CEM and MRI models for differentiating benign and malignant breast lesions were 0.947 and 0.930 respectively, and two models were no significant difference ( Z=0.68, P=0.494). Conclusion:The diagnostic efficacy of CEM and MRI in differentiating benign and malignant breast lesions is comparable based on the 2013 BI-RADS lexicon and the supplement on CEM.