Objective To investigate the frequency of NPM1 mutation and its clinical significance in patients with cytogenetically normal acute myeloid leukemia (CN-AML). Methods The data of 190 patients with CN-AML were collected from Department of Hematology, Tongji Hospital between January 2008 and June 2015, and the discrepancies in clinical features and efficacy between CN-AML patients with NPM1 mutation and those without NPM1 mutation were also analyzed. Results Among the 190 CN-AML patients, NPM1 mutation was found in 44 patients (23.16 %). The proportion of bone marrow blast cells and the count of peripheral white blood cells in patients with NPM1 mutation were higher than those in patients without NPM1 mutation (75.82 % vs. 63.87 % , P <0.05; 75.7 ×109/L vs. 60.0 ×109/L, P <0.05). The rate of response (complete remission + partial remission) in patients with NPM1 mutation was also higher than that in patients without NPM1 mutation [70.09 %(22/31) vs. 56.91 %(45/79), P<0.05) ]. Conclusion NPM1 mutation is associated with higher tumor burden and higher remission rate in CN-AML patients.

Objective To analyze clinical and genetic risk factors of refractory or relapsed acute myeloid leukemia (AML) patients,and evaluate the efficacy of reinduction of chemotherapy.Methods 296 newly diagnosed AML patients,including 89 refractory or relapsed cases,were observed with clinical characteristics.And the efficiency of different reinduction chemotherapy regimens were compared.Results Compared with the non-refractory or relapsed AML,age,complex karyotype and Fms like tyrosine kinase 3 internal tandem duplication (FLT3-ITD) gene mutations were risk factors of relapsed or refractory AML (P ＜ 0.05).Seventy-eight refractory and relapsed AML patients received reinduction therapy.The overall response rate (the complete response rate and the partial response rate) was 44.90 ％ (30/78).All reinduction regimens were divided into three categories:using the initial induction scheme or using new induction scheme including some chemotherapeutics without cross-resistance (regimen A),using the induction regimen containing medium-or high-dose cytarabine (regimen B),and using priming regimen containing of G-CSF,cytarabine,aclacinomycin or homoharringtonine (regimen C).Their overall response rate were 35.12 ％ (13/37),61.90 ％ (13/21) and 45.00 ％ (9/20),respectively,in which the overall response rate of regimen B was statistically higher than regimen A (P ＜ 0.05).Conclusions Age,complex karyotype and FLT3-ITD mutation were important causes of relapsed or refractory AML.The overall response rates were different among three different reinduction regimens.It is helpful to improve the overall response rate of reinduction therapy to use the regimen containing medium-or high-dose cytarabine,which was more suitable for young patients.For patients with poor tolerance,the priming regimen suit was more helpful to improve the overall response rate.

Abstract: To develop novel live attenuated influenza vaccine, we explored the feasibility to attenuate influenza virus by codon deoptimization of NS1. According to the codon usage bias in influenza A virus, we designed and synthesized a condon-deoptimized NS gene by substituting codons of 110 amino acids in the NS1 gene of A/Puerto Rico/8/34(H1N1) with unpreferred synonymous codons. The influenza A virus with the codon deoptimized NS1 gene (deoNS virus) was rescued by reverse genetics. Plaque forming assay and virus growth curve showed that the growth of deoNS virus was reduced about 1000 times in MDCK cells compared to that of the wild-type virus. Intranasal inoculation with deoNS virus did not cause death or evident disease in infected BALB/c mice. Furthermore, the virus titer in the lungs of mice infected with deoNS virus was significantly lower (i.e. 100-1000 times) than that of wild-type virus. Our results indicated that influenza virus could be effectively attenuated by synonymous codon deoptimization of NS1 gene. This strategy will be useful to develop new attenuated candidates for the production of live attenuated influenza vaccines.
Animals ; Base Sequence ; Chick Embryo ; Codon ; genetics ; Influenza A virus ; genetics ; pathogenicity ; Influenza Vaccines ; immunology ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Orthomyxoviridae Infections ; immunology ; prevention & control ; Recombination, Genetic ; Vaccines, Attenuated ; immunology ; Viral Nonstructural Proteins ; genetics ; Virulence ; genetics

Objective To investigate the value of real-time virtual navigation system (RVS) combined with CEUS in guiding radiofrequency ablation (RFA) therapy of neonatal or recurrent lesions of hepatocellular carcinoma (HCC).Methods Totally 111 patients with neonatal or recurrent lesions of HCC after RFA therapy were enrolled.Seventy-eight patients with 86 lesions (77 neonatal lesions and 9 recurrent lesions) underwent RFA guided by RVS combined with CEUS (RVS combined with CEUS group),and 33 patients with 38 lesions (26 neonatal lesions and 12 recurrent lesions) underwent RFA guided by CEUS alone (control group).The precise localization,inactivation rate and local recurrence rate between the two groups were compared.Results Eighty-four lesions (84/86,97.67％) in RVS combined with CEUS group and 25 lesions (25/38,65.79％) in control group were clearly showed and localized (P＜0.001).One month after RFA therapy,the tumor inactivation rate in RVS combined with CEUS group and control group was 95.35 ％ (82/86) and 76.31％ (29/38),respectively (P=0.003).The local recurrence rate in RVS combined with CEUS group was 8.14％ (7/86),while was 36.84％ (14/38) in control group (x2 =15.434,P＜0.001).Conclusion RVS combined with CEUS guidance can improve the accurate position rate and early inactivation rate of RFA therapy for neonatal or recurrent lesions of HCC.

Objective:To analyze the research literature related to end tuberculosis (TB) using bibliometric methods, so as to provide researchers with insights into current research trends and hotspots in this field.Methods:A search was conducted using the Web of Science core collection data base on March 5, 2024. The research was limited to articles and reviews published between 2014 and 2023. The results were visualized with VOSviewer, and an analysis was performed on the involved national, international research cooperation networks and keyword clustering.Results:A total of 1 092 articles related to end TB research were retrieved and screened, with a total citation counts of 14 871 and an average citation counts of 13.62 per article. The United States of America had the highest number of publications (328 articles, 30.04%), while China ranked seventh (100 articles, 9.16%). International scientific collaboration network analysis indicated that countries primarily included the United Kindom, the United States of America, Switzerland, South Africa, the Netherlands, Australia, and India, which had formed close cooperation in the field of end TB research. Keyword clustering analysis suggested that current research hotspots in end TB field included cost analysis related to TB, management of latent TB individuals, strategies for TB prevention and control, key technologies in TB elimination, and TB epidemiology and associated risk factors.Conclusions:Over the past decade, the number of publications and citations in the field of end TB is relatively high. International research collaboration has been extensive, and the research content covers multiple dimensions, including the management and cost analysis of different disease stages, technological innovations, considerations for comprehensive control strategy, and epidemiology.

Objective To investigate the value of ultrasonic two‐dimensional speckle tracking imaging ( 2D‐ST I) layer‐specific strain and transmural gradient in evaluating the changes of hypertensive patients′left ventricular three layers myocardial function . Methods Thirty‐five hypertensive patients without renal insufficiency were selected as group A ,and 25 hypertensive patients with renal insufficiency as group B .For comparison ,40 healthy volunteers were gathered as control group . T hen ,the systolic peak longitudinal strain of the left ventricle( LPS) ,endocardium( LPS Endo ) ,mid‐cardium ( LPSMid ) and epicardium ( LPSEpi ) were collected .After that ,features of transmural gradient ( ΔLS ) and its percentage ( ΔLS% ) were analyzed . Results For each group ,gradient features exist in each layer of left ventricular myocardium :LPS Endo ＞LPSMid＞LPSEpi . For each group ,the differences between LPSEndo and LPSMid ,and that between LPSEndo and LPSEpi were both statistically significant( P ＜0 .05) . When it came to the differences between LPS Mid and LPSEpi ,those of group A and control group were both statistically significant ( P ＜0 .05 ) . Compared with control group ,the LPSEndo of group A ,and LPSEndo ,LPSMid and LPSEpi of group B declined ,all the differences were statistically significant ( P ＜0 .05 ) . Compared with group A ,LPS Endo ,LPSMid and LPSEpi of group B declined ,the differences were statistically significant ( all P ＜0 .05) . For ΔLS′s differences among all three groups ,there was no statistical significance( P ＞0 .05) . Compared with control group ,the ΔLS% Endo‐Mid of group A rised , and the ΔLS% Endo‐Mid , ΔLS% Mid‐Epi of group B rised , the differences were statistically siginificant ( all P ＜ 0 .05 ) . Compared with group A ,the ΔLS% Endo‐Mid ,ΔLS% Mid‐Epi of group B rised ,the differences were statistically siginificant( all P ＜0 .05) . Conclusions T he layer‐specific strain technique can quantitatively evaluate the changes of systolic function of the left ventricular myocardium in hypertensive patients . ΔLS% may have better sensitivity than ΔLS in dection of systolic function damage of the left ventricular myocardium and can provide more reference for the evaluation of left ventricular systolic function .

Polygona-polysaccharose is an important indicator to measure the quality of Polygonati Rhizoma. The polygona-polysaccharose has the effect of lowering blood sugar, regulating blood lipid, anti-fatigue, improving learning and memory ability. The Polygonati Rhizoma, as a Chinese herbal medicine with homology of medicine and food, has a good prospect and application value in the development of food and health products.

Objective:This study aims to assess the effects of soy and whey protein on body composition and muscle function in hospitalized lung cancer patients with cancer-related sarcopenia.Methods:Paired comparison method was adopted for data collected before and after intervention. All enrolled non-small cell lung cancer patients with cancer-related sarcopenia were assigned to either the soy protein (30 g/d) or the whey protein (30 g/d) group to receive the 12-week intervention. Changes in muscle mass (MM) and muscle function before and after intervention were observed to assess intra-group and inter-group differences.Results:The study included 48 patients, 32 of whom completed the intervention and follow-up (16 from the whey protein group and 16 from the soy protein group). After 12 weeks of intervention with whey protein, significant increases were observed in trunk muscle mass (TMM, P=0.014) and TMM adjusted for height (TMM/Ht 2, P=0.011). After 12 weeks of intervention with soy protein, significant increases were noted in appendicular muscle mass (AMM, P=0.049), AMM adjusted for body mass index (AMM/BMI, P=0.044), fat free mass (FFM, P=0.041), and MM ( P=0.038). After adjustment using generalized estimating equations, only TMM/Ht 2 ( P=0.049) showed a significant increase in the whey protein group, while TMM ( P=0.040) and TMM/Ht 2 ( P=0.005) significantly increased in the soy protein group. Despite that all MM-related indices increased in both groups, there were no significant inter-group differences after adjusted by covariate analysis. Conclusions:Interventions with soy protein and whey protein can help maintain and improve muscle mass and muscle function in patients with lung cancer-related sarcopenia. Soy protein and whey protein may have comparable benefits in patients with lung cancer-related sarcopenia.

Objective:To Investigate the prevalence of cancer related muscle disorder (CRMD) in hospitalized lung cancer patients, and to identify the possible risk factors.Methods:This study was a cross-sectional study. The study enrolled 259 patients without missing data who met the inclusion and exclusion criteria from 347 lung cancer patients who were non-repeated hospitalized in the Department of Respiratory and Critical Care Medicine of Peking Union Medical College Hospital from March 2023 to August 2023. Bioimpedance analysis was used to measure muscle mass in patients, and dietary information was collected using the food frequency questionnaire. Disease information and laboratory test results were obtained by consulting Hospital Information System. According to AWGS 2019, patients were divided into five groups: possible sarcopenia (PS), sarcopenia (S), severe sarcopenia (SS), low muscle mass (LMM), and non-muscle disorder (non-MD). The analysis of variance, Kruskal-Wallis test, and χ 2 test were used to compare differences in baseline data, energy and macronutrient intake, and laboratory test indicators among different groups, and ordered logistic regression analysis was applied for multivariate analysis to identify the influencing factors of CRMD in lung cancer patients. Results:This study included 259 hospitalized lung cancer patients who met the inclusion and exclusion criteria. The prevalence of CRMD among 259 patients was 64.5%, PS was 27.4%, S was 13.5%, SS was 14.3%, and LMM was 5.4%. plant protein intake ( OR=0.969, 95% CI: 0.942-0.996) and regular exercise ( OR=0.485, 95% CI: 0.269-0.869) were found to be protective factors for CRMD in hospitalized lung cancer patients, while age ( OR=1.056, 95% CI: 1.013-1.101), weight loss of more than 5% in the last six months ( OR=4.546, 95% CI: 1.363-15.563), and diabetes ( OR=2.342, 95% CI: 1.137-4.866) were identified as risk factors. Conclusion:The prevalence of CRMD in hospitalized lung cancer patients is relatively high, and is closely related to age, weight changes, exercise, comorbidities, and dietary intake.

Objective:To investigate the function and underlying mechanism of cysteine and glycine-rich protein 2(CSRP2)in neuroblastoma(NB).Methods:The correlation between the expression level of CSRP2 mRNA and the prognosis of NB children in NB clinical samples was analyzed in R2 Genomics Analysis and Visualization Platform.The small interfering RNA(siRNA)targeting CSRP2 or CSRP2 plasmid were transfected to NB cell lines SK-N-BE(2)and SH-SY5Y.Cell proliferation was observed by crystal violet staining and real-time cellular analysis.The ability of colony formation of NB cells was ob-served by colony-forming unit assay.Immunofluorescence assay was used to detect the expression of the proliferation marker Ki-67.Flow cytometry analysis for cell cycle proportion was used with cells stained by propidium iodide(PI).Annexin V/7AAD was used to stain cells and analyze the percentage of cell apoptosis.The ability of cell migration was determined by cell wound-healing assay.The level of protein and mRNA expression of CSRP2 in NB primary tumor and NB cell lines were detected by Western blot and quantitative real-time PCR(RT-qPCR).Results:By analyzing the NB clinical sample databases,it was found that the expression levels of CSRP2 in high-risk NB with 3/4 stages in international neuroblas-toma staging system(INSS)were significantly higher than that in low-risk NB with 1/2 INSS stages.The NB patients with high expression levels of CSRP2 were shown lower overall survival rate than those with low expression levels of CSRP2.We detected the protein levels of CSRP2 in the NB samples by Western blot,and found that the protein level of CSRP2 in 3/4 INSS stages was significantly higher than that in 1/2 INSS stages.Knockdown of CSRP2 inhibited cell viability and proliferation of NB cells.Overexpression of CSRP2 increased the proliferation of NB cells.Flow cytometry showed that the proportion of sub-G1,G0/G1 and S phase cells and Annexin V positive cells were increased after CSRP2 deficiency.In the cell wound-healing assay,the healing rate of NB cells was significantly attenuated after knockdown of CSRP2.Further mechanism studies showed that the proportion of the proliferation marker Ki-67 and the phospho-rylation levels of extracellular signal-regulated kinases 1/2(ERK1/2)were significantly decreased after CSRP2 knockdown.Conclusion:CSRP2 is highly expressed in high-risk NB with 3/4 INSS stages,and the expression levels of CSRP2 are negatively correlated with the overall survival of NB patients.CSRP2 significantly increased the proliferation and cell migration of NB cells and inhibited cell apoptosis via the activation of ERK1/2.All these results indicate that CSRP2 promotes the progression of NB by activating ERK1/2,and this study will provide a potential target for high-risk NB therapy.