Clinical Analysis of Acute Lung Injury in 26 Cases of Diffuse Large B-Cell Lymphoma Treated with Rituximab Chemotherapy / 中国实验血液学杂志

OBJECTIVE@#To summarize and analyze the clinical characteristics, treatment and prognosis of acute lung injury in patients with diffuse large B-cell lymphoma (DLBCL) after chemotherapy with rituximab chemotherapy, so as to improve the understanding of the disease and guide the clinical treatment.@*METHODS@#Twenty-Six patients with DLBCL were treated with rituximab chemotherapy and developed to acute lung injury in Third Hospital of Peking University from January 2013 to September 2018 were selected. The clinical features, imaging findings, chemotherapy course, therapeutic effect and prognosis were analyzed.@*RESULTS@#The main clinical symptoms of patients were fever, cough and chest tightness, among which 12 patients showed hypoxia and 3 patients showed respiratory failure type I. The mainly manifested chest CT was diffusive glass grinding in both lungs, and some patients were complicated with a small amount of pleural effusion. The onset chemotherapy time was mainly distributed in 2 to 4 courses, the time between the onset of symptoms and the infusion of rituximab was 8 to 49 days. 25 patients shows no obvious limitation in daily life after effective treatment, and 1 patient died of ineffective treatment.@*CONCLUSION@#There are no typical clinical symptoms in the early stage of acute lung injury after rituximab chemotherapy in DLBCL. Early detection and early hormone therapy are very important to achieve good therapeutic effect.

Inhibitory Effect of S1PR2 Antagonist JTE-013 on Proliferation of Chronic Myeloid Leukemia Cells / 中国实验血液学杂志

OBJECTIVE@#To investigate the effect of sphingosine-1-phosphate receptor 2 (S1PR2) specific antagonist JTE-013 on the proliferation of human chronic myeloid leukemia (CML) cell line K562.@*METHODS@#K562 cells were treated with JTE-013 (0, 0.5, 1, 5, 10, 20 μmol/L) for 24 and 48 hours respectively, CCK8 assay was used to detect the cell viability. K562 cells were treated with JTE-013 (0, 5, 10, 20 μmol/L) for 24 hours, propidium iodide (PI) DNA staining was used to analyze the cell cycle, Western blot was used to determine the levels of P21 and Cyclin D1 protein expression.@*RESULTS@#JTE-013 inhibited the proliferation of CML cell line K562 in a dose dependent manner (r=-0.971). The proliferation rate of CML cells showed that the activity of CML cells decreased gradually with the increase of JTE-013 concentration (r=-0.971). The detection demonstrated that JTE-013 suppressed tumor cell proliferation through cell cycle arrest in G/G phase. Further detection of the protein expressions of G phase regulators showed that level of P21 increased, and expression of Cyclin D1 decreased.@*CONCLUSION@#JTE-013, a S1PR2 antagonist, can inhibit the proliferation of human CML K562 cells, which may be achieved by arresting the cells in G/G phase.

Analysis of Clinical Characteivstics and Therapeutic Efticacy of 54 Patients with Mantle Cell Lymphoma / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To analyse the clinical characteristics and therapeutic efticacy of patients with mantle cell lymphoma(MCL).</p><p><b>METHODS</b>The clinical data including cliniced parameters and laboratorial test results of 54 patients with MCL were collected and restrospectively analyzed to clarity the clinical characteristics of MCL and to evaluate the survival and factors affecting prgnosis of patients.</p><p><b>RESULTS</b>The incidence of MCL accounted for 4.0% of NHL in our center. The median age of MCL patients was 63 years old, the male and female ratio was 1.4∶1. The MCL patients inⅢ-Ⅳ stage accounted for 96.3%; the extranodal organ involvement existed in 98.1% patients, the most common extranodal involvement sites were bone marrow(72.2%), spleen(51.9%), gastrointestinal tract(25.9%). The overall response rate(ORR) was 66.7%, among which the complete remisson (CR) rate was 37.1%, 3 year and 5 year-progression free survival rate was 52.7% and 34.7% respectively, 3 year and 5 year overall survival rate was 60.4% and 49.6% respectively. The therapeutic efficacy in chemotherapy combined with cytarabine group was suprior to that in chemotherapy group without cyteratine, the chemotherapy comtined with auto-HSCT could further improve the prognosis of patients. The unvariatc analysis showed that the KI67 level, B sgmptom, liver function, LDH and C-RP levels, initial therapeutic efficacy, high dose cytarabine regimen, auto-HSCT and relapse-refractroy status were prognosis-related factors; the multi-variate analysis showed that the initial therapeutic efficacy and relapse rcfractory stasus were independent prognostic risk factors. Analysis showed that the surival of patients stratified according to MIPI and MIPI-c indexes was significantly different from that stratified by IPI index.</p><p><b>CONCLUSION</b>The MCL patients commonly complicated by extranodal involvement and have poor prognoss. Using the chenotherapy regimen combined with high doge of cytarabine as induction therapy and auto-HSCT as consotidatory therapy shows the significont efficacy for survival of young patients with MCL. The MIPI and MIPIc indexe are more much suitable for prognosis evaluation of MCL patients.The initial therapeuntic efficacy and relapse-refractrong status are the independant prognosis-related factors.</p>

Relationship of the Changes of Peripheral Blood Immuno-Cell Subsets with the Prognosis of B Cell Lymphoma Patients / 中国实验血液学杂志

OBJECTIVE@#To investigate the relationship of T lymphocyte subsets, B lymphocytes and NK cells with the genesis, progression and prognosis of B cell lymphoma.@*METHODS@#The levels of T lymphocyte subsets, B lymphocytes and NK cells in peripheral blood of healthy control group and B cell lymphoma group were detected by flow cytometry (FCM). The clinical data were collected, and the relationship of these immune indexes with the general conditions, laboratory indexes, curative effect and prognosis were analyzed.@*RESULTS@#Forty-four patients entolled in this study including 24 male and 20 females with the median age of 57 years old (17-82 years), all the patients were the first visit to our hospital and diagnosed. The total counts of lymphocytes, T, B and NK cells in the peripheral blood of patients with the first treatment of B-cell lymphoma were significantly lower than those in healthy controls, and the ratio of CD3HLA-DR activated T cells was significantly higher than that of healthy controls ( 61.5 /μl was higher than that in patients with low level of NK cells.@*CONCLUSION@#The level of total lymphocytes, total T cells, total B cells, NK cells and advanced activated T cells in the patients with B cell lymphoma were significantly different from those in normal subjects. Total count of lymphocytes, T cells, B cells, CD4 cells and NK cells in peripheral blood are important prognostic indicators for BCL. The ECOG score and β2-microglobulin level are independent risk factors for prognosis. The NK cell level and FAC-1 are independent protective factors for the prognosis of B cell lymphoma.

Analysis of plasma miRNAs expression profile in different subtypes of ischemic stroke / 中华神经科杂志

Objective To investigate the changes of circulating miRNAs expression profiles in different subtypes of ischemic stroke according to the Trial of Org 10 172 in Acute Stroke Treatment.Methods We selected 16 patients diagnosed as acute ischemic stroke at first time in the Department of Neurology,the Affiliated Hospital of Medical College Qingdao University from November to December in 2012.They were divided into large artery atherosclerosis (LAA) stroke group (n =8) and small artery occlusive (SAO) stroke group (n =8).At the same time,8 healthy checkup subjects were selected as control.High-throughput sequencing was used to detect the expression profiles of miRNAs in the plasma,and the high-throughput sequencing results were validated by quantitative real-time polymerase chain reaction.We performed the miRNAs variance analysis and associated bioinformatics analysis.Results Thirty hundred and sixty-nine miRNAs were detected in LAA group,SAO group and the control group.We found remarkable differences (fold change ＞2,P ＜0.01) in the expression of 12 miRNAs,including let-7a-5p,miR-744-5p,etc.,between any two groups of the three groups.Thirty-four miRNAs,containing miR-126-5p,miR-23a-3p,miR-143-3p,etc.,had a lower expression (fold change ＞2,P ＜0.01)in LAA group than that in the control group.In comparison with the control group,miR-1304-3p and miR-451a were significantly down-regulated (fold change ＞ 2,P ＜ O.01),while 27 miRNAs were significantly up-regulated (fold change ＞2,P ＜0.01) in SAO group.The expression levels of miR-146b-5p,miR-23a-3p and miR-451 a were validated in accordance with the results of real-time PCR.Target gene prediction and functional analysis revealed that target genes regulated by differential expression of miRNAs were mainly associated with cell proliferation,adhesion,metabolism and other biological functions.Conclusion miRNAs are differently expressed in the plasma of LAA group,SAO group and healthy control group,which suggest that miRNAs might play different roles in the pathogenesis of LAA stroke and SAO stroke by regulating downstream target genes.