Objective To investigate the correlation of DCEGMRI findings with pathologic tumor response to neoadjuvant chemotherapy for patients with tripleGnegative breast cancer (TNBC).Methods SixtyGnine patients with TNBC were enrolled,who underwent DCEG MRI before neoadj uvant chemotherapy,then completed neoadjuvant chemotherapy and surgery.Patterns of tumor volume reduction were divided into two types.Univariate and multivariate Logistic regression analyses were performed to detect the independent predictors of pathological tumor response.Results 30.4% (21/69)patients achieved a pathologic complete response.Multivariate Logistic regression analysis showed that homogenous enhancement on preGneoadj uvant chemotherapy MRI (OR＝1 0.87 ,9 5%CI＝2.94－48.3 1 ,P＜0.00 1 )and concentric shrinkage pattern on postGneoadj uvant chemotherapy (OR＝1 3.04,9 5%CI＝2.0 1－54.1 1 ,P＜0.00 1 )were the independent predictors of pathologic complete response.Conclusion Homogeneous enhancement on preGneoadj uvant chemotherapy MRI and the presence of concentric shrinkage pattern are correlated with pathologically complete response in patients with TNBC.

Objective:To construct a set of quality evaluation index system of "Internet + nursing" with clear evaluation criteria with the service objects as the evaluation subject and Service Quality model as the theoretical framework, and to provide an objective basis for the quality evaluation of "Internet + nursing".Methods:CNKI, Wanfang databases, VIP, PubMed, and Web of Science were searched from establishment to November 2021. The article determined the quality evaluation items of "Internet + nursing" based on the perspective of service objects by means of literature analysis, field research and Delphi expert inquiries. Analytic hierarchy process was used to confirm the weight of each indicator.Results:In this study, 22 experts were consulted for 2 rounds.The effective recovery rate of the two rounds of questionnaires were 100%. The judgment basis coefficient was 0.936, familiarity coefficient was 0.945 and authority coefficient was 0.941; in the first round, the Kendall harmony coefficients assigned to the importance of the first and second level indicators were 0.187 and 0.122, and the Kendall harmony coefficients assigned to the feasibility were 0.183 and 0.125; in the second round, the Kendall harmony coefficients assigned to the importance of the first and second level indicators were 0.241 and 0.190, and the Kendall harmony coefficients assigned to the feasibility were 0.218 and 0.166 (both P<0.01). The final evaluation index system for the "Internet + nursing" based on the perspective of service objects included 7 first-class indicators and 33 second-class indicators. Conclusions:The "Internet + nursing" quality evaluation index system constructed in this study based on the perspective of service objects is scientific, reliable and practical, which can be used as an evaluation tool for the current "Internet + nursing" quality evaluation and strategy optimization.

Objective To study the in vitro killing effect of novel small molecule inhibitors, ribosomal S6 kinase1 (RSK1) inhibitor (BI-D1870) and polo-like kinase 1 (PLK1) inhibitor (BI2536), combined with recombinant attenuated vesicular stomatitis virus VSVΔM51 on various glioma cells. Methods (1) In vitro cultured GL261, CT2A and HS68 cells were divided into control group, rapamycin group, BI-D1870 group, BI-2536 group, VSVΔM51 group, rapamycin +VSVΔM51 group, BI-D1870+VSVΔM51 group, and BI2536+VSVΔM51 group; pretreatments with 100 nmol/L rapamycin, 10 μmol/L BI-D1870, and 100 nmol/L BI-2536 for 2 h were given to the cells from the above groups, respectively, and then, they were infected with VSVΔM51 virus at 0.1 mutiplicity of infection (MOI); at 72 h after treatments, the cell survival rate was determined by Alarma Blue method; VSV△M51 virus was infected at 10 MOI one h after pretreatment with the above drugs, apoptosis of GL261 cells was detected by cleaved caspase-3 staining 24 h after that; the expression of apoptotic protein polyadp-ribosomal polymerase (PARP) was detected by Western blotting; Annexin V-FITC/propidium iodide double staining was used to detect the cell apoptosis. (2) GL261 and CT2A cells were divided into VSVΔM51 group, rapamycin+VSVΔM51 group, BI-D1870+VSVΔM51 group, and BI2536+ VSVΔM51 group; VSV△M51 virus was infected at 0.1 MOI one h after pretreatment with the above drugs,; 48 h after treatments, fluorescence microscope was used to detect the expression of green fluorescent protein (GFP); IVIS200 in vivo imaging system was used to detect the changes of cell virus luciferase in the 4 groups. (3) Fifteen CT2A intracranial implanted glioma model mice were divided into VSVΔM51 group, BID-1870+VSVΔM51 group and BI2536+VSVΔM51 group according to random number table method (n=5); mice in the latter two groups were intraperitoneally injected with BI-1870 (100 mg/kg) or intravenously injected with BI-2536 (20 mg/kg); 24 h after that, mice in the three groups were intravenously injected with virus VSVΔM51; virus luciferase was detected by IVIS200 in vivo imaging system 24 and 72 h after treatments; the grouping and treatments of GL261 intracranial glioma model mice were the same as above, the expression of virus GFP was observed under fluorescence microscope 48 h after treatments, and virus titers of these mice were detected by virus plaque assay. Results (1) As compared with the control group, rapamycin group, BI-D1870 group, BI-2536 group, and VSVΔM51 group, the rapamycin+VSVΔM51 group, BI-D1870+VSVΔM51 group, and BI2536+VSVΔM51 group had significantly lower cell survival rate (P<0. 05); cleaved Caspase-3 staining showed no cell apoptosis in the control group, a small amount of apoptotic corpuscles in the rapamycin group, BI-D1870 group, BI-2536 group, and VSVΔM51 group, but obvious increased amount of apoptotic corpuscles in the rapamycin+VSVΔM51 group, BI-D1870+VSVΔM51 group, and BI2536+ VSVΔM51 group; Western blotting indicated that GL261 and CT2A cells from the control group, rapamycin group, BI-D1870 group, BI-2536 group, and VSVΔM51 group had lower cleaved PARP expression level than those from the rapamycin+VSVΔM51 group, BI-D1870+VSVΔM51 group, and BI2536+VSVΔM51 group. The results of Annexin V-FITC/propidium iodide double staining were consistent with those of cleaved Caspase-3 staining. (2) As compared with VSVΔM51 group and rapamycin+VSVΔM51 group, BI-D1870+VSVΔM51 group and BI2536+VSVΔM51 group had significantly increased GFP expression and statistically higher intensity of virus luciferase (P<0.05). (3) CT2A cells in the VSVΔM51 group, BID-1870+VSVΔM51 group and BI2536+VSVΔM51 group had increased intensity of virus luciferase successively, with significant differences (P<0.05); GL261 cells in the VSVΔM51 group, BID-1870+VSVΔM51 group and BI2536+VSVΔM51 group had increased virus titers successively, with significant differences (P<0.05). Conclusion Both small molecule inhibitors promote the replication of VSVΔM51 virus and enhance the killing effect on glioma cells, and its synergistic effect is obviously better than rapamycin.