Absence of FGFR3–TACC3 rearrangement in hematological malignancies with numerical chromosomal alteration

FGFR–TACC, found in different tumor types, is characterized by the fusion of a member of fibroblast grown factor receptor (FGFR) tyrosine kinase (TK) family to a member of the transforming acidic coiled-coil (TACC) proteins. Because chromosome numerical alterations, hallmarks of FGFR–TACC fusions are present in many hematological disorders and there are no data on the prevalence, we studied a series of patients with acute myeloid leukemia and myelodysplastic syndrome who presented numerical alterations using cytogenetic traditional analysis. None of the analyzed samples showed FGFR3–TACC3 gene fusion, so screening for this mutation at diagnosis is not recommended.     

强直性脊柱炎患者外周血淋巴细胞和CD28CD40的检测及临床意义

目的 探讨强直性脊柱炎(ankylosing spondylitis,AS)患者外周血淋巴细胞中数量的变化和共刺激分子CD28CD40外周血淋巴细胞上的表达的临床意义.方法 采用流式细胞术检测60例AS患者和30例健康对照者外周血淋巴细胞表面标志CD3、CD4、CD8、CD19相对数量,检测CD28、CD40L在CD3 CD4 、CD3 CD8 T细胞上和CD40在CD19 B细胞上的表达情况.结果 AS患者CD3 、CD3 CD4 、CD19 细胞较正常对照组显著增高(P＜0.05),CD3 CD8 T细胞较正常对照组降低(P＜0.05);AS患者CD28、CDD40L在CD3 CD4 、CD3 CD8 T细胞上和CD40在CD19 B细胞上的表达都较正常对照组显著增高(P＜0.05).结论 强直性脊柱炎(AS)外周血淋巴细胞中数量变化及共刺激分子CD28、CD40表达情况与AS患者免疫功能紊乱和发病机制密切相关.     

CD28基因启动子-372G/A多态性与慢性乙型肝炎的关系

共刺激分子CD28在机体抗乙型肝炎病毒（HBV）免疫应答中起重要作用,CD28基因多态性可能会影响HBV感染结局并可能与乙型肝炎慢性化有关.我们采用聚合酶链反应-限制性片段长度多态性分析技术分析CD28基因单核苷酸多态性（SNP）与乙型肝炎慢性化的关系,为探索慢性乙型肝炎的易感基因和抗性基因提供资料.     

“一肾一夹”高血压大鼠动脉平滑肌细胞钠泵α亚单位的基因表达

目的 探讨“一肾一夹（1k1c)”高血压大鼠动脉平滑肌细胞钠泵α亚单位各异构体基因表达的改变,为高血压发病机制的深入研究提供理论及实验依据。方法 分别应用分子生物学RT－PCR及免疫组化技术,探讨1k1c高血压大鼠动态平滑机细胞钠泵α1、α2及α3亚单位mRNA及蛋白水平基因表达的改变。结果 1k1c高血压大鼠动脉平滑肌细胞钠泵α亚单位基因表达发生改变：无论在mRNA或蛋白水平,α1亚单位表达增强,而α2与α3亚单位表达无改变。结论 1k1c高血压大鼠动脉平滑肌细胞钠泵α亚单位基因表达发生改变,这种改变可能参与了该模型的血压升高机制。     

Virologic and histologic characterisation of dual hepatitis B and C co-infection in Egyptian patients

Background and study aimsData about dual hepatitis C (HCV) and B (HBV) co-infection are still scarce, especially in endemic areas such as Egypt. Therefore, we aimed to characterise the virologic and histologic pattern of dual B/C co-infection in a tertiary care centre in Egypt.Patients and methodsAfter obtaining approval from the review board, a retrospective design to evaluate the data registry between January 2009 and December 2012 of patients with dual HCV and HBV seropositivity (BC-group) at the Viral Hepatitis Unit in Ministry of Health and Assiut University Hospital, Egypt was conducted. Data for hepatitis B e antigen (HBe-Ag) and anti-HB core status, anti-hepatitis delta virus (anti-HDV), HBV-DNA and HCV-RNA assays and liver biopsy (METAVIR scoring) results were collected. Two other matched groups of mono-HCV (C-group) and HBV (B-group) were selected as controls. All patients were naive for antiviral therapy.ResultsA total of 3300 patients were enrolled. Dual infection was observed in 25 (0.7%) patients (all males, mean = 35.2 ± 10.2 years). Four patients (16%) were HBe-Ag-positive. Six (24%) patients were HBV-DNA-negative and all were positive for HCV RNA. Between groups, raised alanine aminotransferase (ALT) was found in 76%, 41.7% and 49.2% of the BC, B and C groups, respectively (p = 0.023). HBV DNA >2000 IU ml^?1 was more in the B-group than in the BC-group (63.9% vs. 36%; p = 0.042) and HCV RNA >800,000 IU ml^?1 was more in the BC-group than in the C-group (28% vs. 12.3%; p = 0.009). Histologically, there is no statistical significant difference between the three groups.ConclusionDual hepatitis B/C infection is not uncommon and their virologic and histologic profile is modest. Further evaluation with regard to treatment and long-term follow-up is warranted.     

原发免疫性血小板减少症患者CD4+T细胞CD28的表达及其与IFN-γ/IL-10比率的关系

目的 研究原发免疫性血小板减少症(ITP)患者治疗前、后,外周血CD4+的T淋巴细胞中共刺激分子CD28的表达及与IFN-γ/IL-10比率的关系.方法 采用流式细胞术分析30例ITP患者糖皮质激素治疗前、后和26例正常对照外周血CD4+T细胞上CD28表达率,用ELISA双夹心法检测外周血血清中IFN-γ和IL-10的水平,评价CD4+ CD28+与IFN-γ/IL-10平衡状态、血小板计数之间的关系.结果 ITP患者治疗前CD4+ CD28+的表达显著高于正常对照组(P＜0.05),治疗后与正常对照组比较,差异无统计学意义(P>0.05);ITP患者治疗前IFN-γ水平较正常对照组显著增高,IL-10水平显著降低,IFN-γ/IL-10比值显著增高(P＜0.01),治疗后与正常对照组比较,差异无统计学意义(P>0.05);ITP患者治疗前CD4+ CD28+与IFN-γ/IL-10比值呈正相关(P＜0.05),与血小板计数呈负相关(P＜0.05).结论 共刺激分子CD28与ITP免疫紊乱密切相关,可能通过参与Th1优势状态形成而在ITP的发病中发挥一定作用.