Objective To prevent the prevalence of drug resistance viruses,we analyzed drug resistance mutations of HIV-1 among HIV-1 infected individuals in seven provinces of China.Methods We acquired 718 HIV-1 infected patients' treatment and compliance from questionnaires,amplified HIV-1 pol genes by RT-PCR and nest-PCR,sequenced RT and protease regions and run clustal with the subtype B consensus amino acid sequence in Stanford HIV drug resistance sequence database.Results The viral load in treated patients was obviously lower than that in untreated patients(P

Objective To analyze the blood supply and metabolism in the marginal area of foci of hepatic alveolar echinococcosis by quantitative perfusion parameters. Methods Thirty patients with hepatic alveolar echinococcosis were scanned with the Revolution CT and the images were analyzed. The perfusion parameters, such as the bloodflow (BF), time to peak (TTP), blood volume (BV), mean transit time (MTT) and hepatic arterial fraction (HAF) were compared among different groups. Results The BF, TTP, BV and MTT values of the peripheral infiltration zone and the values of the surrounding normal liver tissues were significantly different (F = 24.579, 8.343, 20.535 and 21.843, all P<0.05), but the HAF values of the peripheral infiltration zone and the values of the surrounding normal liver tissues were not significantly different in the hepatic alveolar echinococcosis patients (F = 2.621, P> 0.05) . Conclusion The whole hepatic perfusion Revolution CT can accurately and quantitatively analyze the alveolar echinococcosis foci, especially the peripheral infiltration zone, which has important guiding significance for the formulation of surgical plan.

Dendritic cells (DCs), a type of antigen-presenting cells (APC), are recognized as an important regulator of immune response and immune tolerance, and play a critical role in the host innate immunity and adaptive immunity. Previous studies have shown that the long-term parasization of Echinococcus in the host is strongly associated with the host immune tolerance induced by DCs. This review summarizes the research progress of the role of DCs in host immune tolerance caused Echinococcus infection, aiming to provide the theoretical basis and insights into the management and immunotherapy of Echinococcus infections.

Objective:To analyse the functions of two phase media of Liquid and Gel with the Microcolumn Gel Coombs'Test and study the reasons for obviating the need of washing RBC in the Gel Coombs'T.Methods:Add tryplan blue solution into the wider upper portion of the microcolumn gel tube,observe the time of the tryplan blue solution diffusion into the Gel medium at the narrow bottom portion of the tube.Add tryplan blue solution into the liquid reactant in test tube,observe the time of the tryplan blue solution diffusion into the liquid medium.Results:In the Microcolumn of Gel Coombs'Test there is no visual mixing of the two phases for 6 h at lest which is much longer than the incubation time needed for antibody-antigen reaction in routine red cell serology.It takes more than 30 h for the 2 phases to mix.In the test tube of Coombs'Test the tryplan blue solution diffusion into the liquid reactant of serum,red cells and anti-globin reagents and turned to blue colour immediatedly.Conclusion:Two reasons for non-requirement of washing in Gel-Coombs'T have been found.Firstly,there are two phases of reactants in the tubes of cards,the AHG is present in the gel at the narrow bottom portion of the tube,and the RBC,the serum to be detected in the wider upper portion of the tube.Secondly,the gel serves as not only a medium for separating agglutinated RBC from the dispersed RBC,but as a medium for boosting the reactions of AHG with IgG sensitized RBCs.The crux of the two reasons is of the two phases of reactants.

Objective: To evaluate the pulmonary retention, safety, and local drug concentration of Ranuncoli Ternati Radix extracts- ion sensitive in situ gels (RTRE-ISG). Methods: Sodium alginate as excipient, RTRE (70% ethanol) as solvent, it was swollen at room temperature using magnetic stirring to prepare RTRE-ISG which was administered via endotracheal tube to rats, The levels of inflammatory cytokines and fibrosis factors were detected in BALF to screen the relative safe priscription. Then using CY5.5 as fluorescent dye, the pulmonary retention of RTRE-ISG was evaluated with the aid of the small animal in vivo imaging system. In the end, the lung lavage was performed by using the improved alveolar lavage technique and the local drug concentration was determined. Results: The safety of RTRE-ISG prepared by 1% sodium alginate was better, the retention time in lung was 120-144 h revealed by fluorescence in vivo imaging system. The results showed that the release of drug reached to a peak of 5.24 μg/mL in 5 h after administration and 0.08 μg/mL in 144 h after administration. Conclusion: RTRE-ISG was good safety with the retention time in lung more than 120 h, which is a nevol sustained preparation of Chinese materia medica for the treatment of pulmonary tuberculosis.

OBJECTIVE: To investigate the changes of GATA-1 protein expression during erythroid differentiation of K562 cells under hypoxia and how GATA-1 can regulate erythroid differentiation by up-regulating the expression of miR-451a and inhibiting the expression of 14-3-3ζ. METHODS: K562 cells were divided into 2 groups: the normoxia group and the hypoxia group, after the induction of hemin for 96 h, the positive cells rate of the benzidine staining, the mRNA expression of γ-globin and the expression of CD235a were detected, and the success of the model was verified. The changes of GATA-1 and miR-451a expression in the above-mentioned 2 groups, the changes of miR-451a expression after over-expressed GATA-1 were detected by Western blot and qRT-PCR. The cells in normoxic group and hypoxia group were divided into negative control group (NC group) and miR-451a over-expression group respectively, and the degree of erythroid differentiation in the four groups was judged according to the corresponding erythroid differentiation indexes, and the expression of 14-3-3ζ was detected by Western blot after over-expressed miR-451a. RESULTS: The positive cell rate of benzidine staining, mRNA expression of γ-globin and the expression of CD235a after 96 h induction by K562 cells under hypoxia were significantly higher than 0 h, suggesting that the erythroid differentiation model of K562 cells under hypoxia was replicated successfully. The expression levels of GATA-1 protein and miR-451a in the hypoxic group were significantly higher than that in the normoxic group (P<0.05). The expression level of miR-451a in hypoxia group was significantly higher than that in NC group after overexpressed GATA-1 (P<0.05). After over-expressed of miR-451a under hypoxia, the positive cell rate of benzidine staining, the mRNA expression level of γ-globin and the expression of CD235a were significantly higher than those in NC group (P<0.05). The expression level of 14-3-3ζ protein in miR-451a over-expressed group was lower than that in NC group under hypoxia (P<0.05). CONCLUSION Hypoxia can significantly increase the expression of GATA-1 protein, and the increase of GATA-1 expression can up-regulate the expression of miR-451a, thereby inhibiting the expression of 14-3-3ζ protein, which hinders the cell proliferation in erythroid differentiation model of K562 cells and plays an important role in promoting erythroid differentiation.
14-3-3 Proteins ; Cell Differentiation ; Erythroid Cells/metabolism* ; GATA1 Transcription Factor/metabolism* ; Humans ; Hypoxia ; K562 Cells ; MicroRNAs/genetics*

To investigate the prediction of serum amyloid beta protein level on hemorrhage transformation in acute cerebral infarction and its related factors. Methods A total of 114 patients with acute cerebral infarction were selected from March 2021 to October 2021，and divided into HT group （41 cases） and control group （73 cases） according to whether the hemorrhage was transformed. The general basic information and serum amyloid beta protein level after admission were recorded，and the risk factors of hemorrhage transformation after cerebral infarction were analyzed. Results There were no significant differences in age，gender，history of atrial fibrillation，Hyc and LDL between the two groups （P> 0.05）.There were statistically significant differences in serum Aβ level，history of hypertension，history of diabetes，uric acid level and NHISS score（≥10 points） between the two groups （P< 0.05）. Binary Logistic regression analysis showed that history of hypertension，serum uric acid level，NHISS score （≥10 points） and serum Aβ level were nonrisk factors for hemorrhage transformation of thrombolysis acute cerebral infarction. The difference of Aβ level between asymptomatic group and symptomatic group in HT group was statistically significant（P<0.05）. ROC curve analysis showed that the area under the curve of serum Aβ for predicting the risk of hemorrhage transformation after acute cerebral infarction was 0.909，the optimal cutoff value was 166.84ng/ml，the sensitivity was 87.8%，and the specificity was 79.5%. The results of appeal analysis suggest that serum Aβ level can also predict the severity of hemorrhage after transformation. Conclusion History of hypertension，high NHISS score after admission，elevated uric acid level and serum Aβ level in patients with acute cerebral infarction are the influencing factors of hemorrhage transformation.

Objective To identify the differentially expressed proteins in different liver tissues in the mouse model of cystic echinococcosis (CE), so as to provide insights into the research and development of therapeutic drugs targeting CE. Methods Female Kunming mice at ages of 6 to 8 weeks were randomly assigned into the CE group and the control group. Mice in the CE group were intraperitoneally infected with 2 000 Echinococcus multilocularis protoscoleces, while mice in the control group were injected with the same volume of physiological saline. All mice in both groups were sacrificed after breeding for 350 d, and the lesions (the lesion group) and peri-lesion specimens (the peri-lesion group) were sampled from the liver of mice in the CE group and the normal liver specimens (the normal group) were sampled from mice in the control group for data independent acquisition (DIA) proteomics analysis, and the differentially expressed proteins were subjected to Gene Ontology (GO) term enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. Results A total of 26 differentially expressed proteins were identified between the lesion group and the normal group and between the peri-lesion group and the normal group, including 8 up-regulated proteins and 18 down-regulated proteins. GO term enrichment analysis showed that these differentially expressed proteins were predominantly enriched in endoplasmic reticulum membrane (biological components), oxidoreductase activity (molecular function) and oxoacid metabolic process and monocarboxylic acid metabolic process (biological processes). KEGG pathway enrichment analysis revealed that the differentially expressed protein Acyl-CoA oxidase 1 (Acox1), which contributed to primary bile acid biosynthesis during the fatty acid oxidation, was involved in peroxisome signaling pathway, and the differentially expressed protein fatty acid binding protein 1 (Fabp1), which contributed to fatty acid transport, was involved in the peroxisome proliferator-activated receptor (PPAR) signaling pathway. Conclusion Differentially expressed proteins are identified in the liver specimens between mouse models of CE and normal mice, and some differentially expressed proteins may serve as potential drug targets for CE.

Abstract　　Myelodysplastic syndromes (MDS) represent a clonal hematopoietic stem cell disorder characterized by morphologic features of dyspoiesis, high risk of transformation from MDS into AML. Allogeneic hematopoietic stem-cell transplantation is the only curative therapy for MDS, but the failure rate of transplantation is still high, which attribute to relapsed disease and transplant-related complications. Recently, the spectrum of gene abnormalities in MDS has been revealed by next generation genomic sequencing techniques. It was found that more than 80% MDS patients have at least one gene mutation. Mutated genes in MDS are powerfully associated with clinical phenotype and prognosis. In this review , the recent advancements regarding recurrent gene mutations in MDS are briefly summarized, and the  prognostic values of gene mutations are discussed in MDS or after allogeneic hematopoietic stem-cell transplantation,so as to set up a predicting model and to guide the treatment.
Hematopoietic Stem Cell Transplantation ; Humans ; Mutation ; Myelodysplastic Syndromes ; Prognosis ; Stem Cell Transplantation

Objective : Based on metabolomics and transcriptomics analysis , to explore the molecular mechanism of spleen inflammation induced by high altitude hypoxia in mice through NOD⁃like receptor signaling pathway . Methods : C57BL/6 mice were raised at an altitude of 400 m and 4 200 m respectively , with five mice in each group , and spleen tissues were collected after 30 days . Differential metabolites and differentially expressed genes in key pathways were screened by metabolomics and transcriptome analysis and correlation KEGG enrichment analysis , and the related network interaction diagram of differential metabolites and differentially expressed genes in key pathways was constructed and verified by RT⁃qPCR . Results : Metabolomics analysis showed that 133 differential metabolites were screened from in the plain spleen control group (PSC group) and the plateau spleen test group (HST group) , 95 of which were up⁃regulated while 38 of which were down⁃regulated . KEGG enrichment analysis showed that they were mainly involved in NOD⁃like receptor signaling pathway , HIF⁃1 signaling pathway , cholesterol metabolism and other metabolic pathways . The results of transcriptome analysis showed that a total of 4213 differentially expressed genes were identified in PSC group and HST group , including 1947 up⁃regulated genes and 2266 down⁃regulated genes . KEGG was enriched in 173 signaling pathways , including NOD⁃like receptor signaling pathway , MAPK signaling pathway , NF⁃κB signaling pathway and other pathways . Comprehensive analysis showed that the differential metabolites and differentially expressed genes were obviously enriched in NOD⁃like receptor signaling pathway . Therefore , the correlation network interaction map was constructed for the differential metabolites ATP and differentially expressed genes in NOD⁃like receptor signaling pathway . RT⁃qPCR results showed that compared with PSC group , the expression levels of DEGs related to NOD1 and NOD2 (CHUK , TAB3 , MAPK8) in the signaling pathway of NOD⁃like receptor and NLRP1 ⁃CASP1 pathway (NLRP1b , CASP1) in HST group were significantly enhanced . The mRNA expression levels of downstream inflammatory factors IL⁃6 , IL⁃1 β , IL⁃18 , INF⁃γ and TNF⁃α were up⁃regulated and differentially expressed . Conclusion Based on the combined analysis of metabolomics and transcriptomics , it was found that hypoxia stimulation at high altitude may affect the NOD⁃like receptor signaling pathway in vivo , and the differential metabolite ATP is positively correlated with the differential key genes in the pathway . ATP mediates the release of downstream inflammatory factors by activating NOD1 , NOD2 pathways and NLRP1 inflammable⁃CASP1 pathways . Inflammatory response occurred in spleen tissue of mice.