受者特异性产生干扰素γ细胞与急性移植物抗宿主病的关系

目的研究异基因造血干细胞移植(allo-HSCT)中针对受者特异性产生干扰素γ细胞 (IFN-γ PC)与急性移植物抗宿主病(aGVHD)的关系。方法以37例HLA相合的同胞allo-HSCT患者为研究对象,将移植前供者、移植后患者外周血单个核细胞(PBMNC)分别作为反应细胞(RC),移植前受者PBMNC作为异基因刺激细胞(allo-SC),在混合淋巴细胞反应后用酶联免疫斑点法检测针对受者特异性IFN-γ PC,分析其与aGVHD的关系。结果 allo-HSCT前检测受者特异性IFN-γ PC水平, 移植后发生aGVHD组显著高于无aGVHD组(P<0．01);供者针对受者特异性IFN-γ Pc≥20／2×10~5 RC时,发生Ⅱ-Ⅳ度aGVHD的比例显著高于<20／2×10~5RC组(P<0．05)。aGVHD发生时患者针对移植前受者特异性IFN-γ PC水平显著高于移植前相应供者针对受者的水平(P<0．05);亦显著高于 aGVHD患者针对移植前供者的水平(P<0．01)。移植后14天(+14天)和+28天时,aGVHD组受者特异性IFN-γ PC水平均显著高于无aGVHD组(P值均<0．01)。aGVHD患者经过免疫抑制剂治疗7 d后,受者特异性IFN-γ PC较aGVHD发生时显著降低(P<0．05)。结论受者特异性IFN-γ PC的水平能够反映allo-HSCT前后的同种异体反应,有助于临床aGVHD的预测、诊断和监测。     

急性白血病和骨髓增生异常综合症染色体-7/7q-异常的细胞遗传学和临床分析

本研究探讨染色体 - 7/ 7q -异常在恶性血液学疾病的发生、发展和预后中的作用。用细胞染色体显带技术分析 4 10例初发急性白血病 (acuteleukemia ,AL)、71例骨髓增生异常综合症 (myelodysplasticsyndrome ,MDS)和36例慢性粒细胞白血病 (chronicmyelogenousleukemia acceleratedphase ,CML AP)的细胞核型。结果表明 :染色体- 7/ 7q -异常在AL ,MDS和CML AP患者中的检出率分别为 4 .88% ,9.86 %和 8.33% ,在急性髓细胞白血病(AML)和急性淋巴细胞白血病 (ALL)中均可检出染色体 - 7/ 7q -异常 ,检出率分别为 4 .70 %和 6 .2 5 % ,两者无明显差别 (P >0 .0 5 )。 9例具有单独染色体 - 7或 7q -异常 ,2 2例伴有其他染色体异常 ,如 -X、- 5、 8、t(3;3)、t(11;16 )、t(2 ;11)等。发现 1例MDS RAEB患者具有 - 7异常克隆 ,同时还有 7q -异常克隆出现 ,而且 - 7异常的细胞数高于 7q -异常的细胞数。接受化疗的 7例ALL中 4例获得完全缓解 ;13例AML患者中仅 2例获得完全缓解 ;7例MDS患者中 6例转化急性白血病 ;3例CML AP中无 1例缓解。结论 :染色体 - 7/ 7q -异常是恶性血液肿瘤常见的染色体异常 ,在髓系和淋巴细胞中均可出现 ,- 7异常和 7q异常可在同一患者共存 ;具有染色体 - 7/ 7q -异常的患者预后差。     

CD117在白血病细胞上的表达分析

目的　探讨细胞表面分化抗原CD117在各型白血病细胞上的表达规律及其意义。方法　采用CD4 5/SSC双参数散点图设门方法进行三色流式细胞术细胞表面分化抗原分析。结果　急性髓系白血病 (AML)患者CD117表达率为 6 8%,慢性粒细胞白血病急变期 (CML BC)患者CD117表达率为 80 %,而在急性淋巴细胞白血病中表达率极低 ,仅为 2 %。在慢性淋巴细胞白血病、CML慢性期中阴性。在AML中CD117主要表达在M0 /M1( 72 %)、M2 ( 88%)、M4 ( 5 0 %)、M5a( 75 %)、M6( 10 0 %) ,但在M3 和M5b中表达率较低 (分别为 39%和 2 9%) ,在M3 中CD117的表达率高于CD34 及HLA DR。CD117与CD14 在AML中的表达呈负相关。结论　CD117有助于淋巴系与髓系白血病的鉴别 ,并有助于白血病克隆与正常细胞的区分。     

浙江省806例急性心肌梗死患者药物治疗状况的调查

目的了解2001~2002年浙江省急性心肌梗死(AMI)患者的药物治疗状况。方法调查浙江省23所医院2001—2002年间出院诊断为AMI的806份病史资料。结果男性占72·2%。平均年龄为67·4岁,从胸痛发生至到达医院平均时间为11h。总静脉溶栓率仅为19·2%,适宜溶栓却未进行溶栓治疗者106例(45·9%)。β受体阻滞剂(BB)和血管紧张素转换酶抑制剂(ACEI)的实际使用率分别为49·4%、65·4%。阿斯匹林、低分子肝素、他汀类使用率较高,分别为88·2%、73·7%、71·5%。结论浙江省的AMI西医药治疗基本上遵循了指南推荐策略,但与指南要求仍存在差距,尤其是静脉溶栓率偏低。     

超声检查对甲状腺癌术后颈淋巴结转移的诊断价值

目的探讨超声对甲状腺癌术后颈部肿大淋巴结的鉴别诊断价值。方法回顾性分析40例甲状腺癌术后患者颈部淋巴结的超声表现 ,比较转移性淋巴结和非转移性淋巴结在二维超声和彩色多普勒超声的表现 ,以及阳性淋巴结与原发病灶的位置关系。结果67枚转移性淋巴结中 ,沙粒样钙化点出现率为67.16% (45/67) ,周边缺损率为41.79 %(28/67) ,外周长入血管支数>2支的占77.61 %(52/67) ,26枚非转移性淋巴结中 ,沙粒样钙化点出现率为3.85% (1/26) ,周边缺损率为7.69 %(2/26) ,外周长入血管支数>2支的占7.69%(2/26)。转移性淋巴结中有38.81% (26/67)出现在第III群 ,有25.37 %(17/67)出现在第IV群。结论高频超声对甲状腺术后颈部肿大淋巴结的诊断和鉴别诊断具有重要价值。     

Rapamycin inhibiting Jurkat T cells viability through changing mRNA expression of serine/threonine protein phosphatase 2A

Aims

In this study, we analyzed the mRNA expression of serine/threonine (Ser/Thr) protein phosphatase 2A (PP2A) in the human leukemic T-cell line Jurkat cells treated with rapamycin, to determine whether rapamycin inhibiting cell viability is accompanied with the change of mRNA expression of PP2A.

Methods and results

Jurkat cells were incubated with various concentrations of rapamycin and cultured for different hours. Cell viability was assessed by MTT assay. The mRNA expressions of PP2A subunits were measured by quantitative real-time polymerase chain reaction (PCR). We found that rapamycin had an inhibitory effect on cell viability. IC50 was 343.3 nM at 48 h.We also found rapamycin had a dose and time-dependent effect on the gene expression of PP2A. When setting the concentration of rapamycin 500 nM, the mRNA expressions of PP2A subunits (Aa, Aβ, PR55a, PR55δ, PR61γ, PR70, Ca and Cβ) were declined significantly at 48 h. When treated with various concentrations of rapamycin for 48 h, the mRNA expressions of PP2A subunits were down-regulated in the range from 10 nM to500 nM.

Conclusions

Rapamycin inhibiting Jurkat T cells viability may be related to the reduction of PP2A mRNA expressions.     

对侧单肺再移植1例报告

肺移植是治疗终末期肺病唯一有效的方法,但各种原因导致的移植物失功是肺移植临床面临的重大问题,再移植是提高该类受者长期生存的唯一选择。     

Prostatic calculi influence the antimicrobial efficacy in men with chronic bacterial prostatitis

We studied the efficacy of culture-specific antibiotic therapy for chronic bacterial prostatitis (CBP) patients with or without prostatic calculi. This study included 101 patients (21–62 years old) who met the consensus criteria for CBP (National Institutes of Health category II). According to the results of transrectal ultrasonography (TRUS), all patients were divided into two groups: Group 1, CBP with prostatic calculi, n=39; Group 2, CBP without prostatic calculi, n=62. All patients received optimal antimicrobial therapy for 4 weeks and followed up for a minimum of 3 months (range: 3–8 months). In addition to expressed prostatic secretions (EPS) and urine culture, all patients were asked to complete the National Institutes of Health Chronic Prostatitis Symptom Index (NIH-CPSI) and the subjective global assessment (SGA). The microbiological eradication rate at the end of treatment were 32/39 (82.1%) and 54/62 (87.1%), while the rates for continued eradication at the end of study were 17/39 (43.6%) and 45/62 (72.6%) in Group 1 and Group 2 (P<0.01), respectively. We observed a decrease in the total NIH-CPSI score median values from 24 to 19 in Group 1 and from 24 to 11 in Group 2. The pain subscore (P<0.01), urinary sunscore (P<0.05) and quality of life (QoL; P<0.05) as well as the total NIH-CPSI score (P<0.01) were significantly improved after antimicrobial treatment in Group 2 compared to Group 1. Response, defined as a decrease of the NIH-CPSI total score by at least 50%, was seen in Group 1 versus Group 2 in 38.5% and 58.1% (P<0.01), respectively. Our results showed that prostatic calculi influence the antimicrobial efficacy in men with CBP. There was a noticeable decrease in the cure rate of CBP patients with prostatic calculi due to relapse after antimicrobial therapy.     

定量组织速度成像与右心导管法评估肺动脉高压右心室功能的对照分析

目的 探讨定量组织速度成像（QTVI）评估肺动脉高压（PAH）右心室功能的准确性。方法 58例PAH患者入选本研究。常规超声测量右心室舒张末期面积和收缩末期面积（RVEDA，RVESA）并计算右心室面积变化率;获取入选者标准心尖部右心室流入道长轴和四腔观TVI图像，离线分析右心室4个壁三尖瓣环处组织速度曲线，测量右心室游离壁三尖瓣环处收缩期峰值速度（Sa）、舒张早期峰值速度（Ea）、舒张晚期峰值速度（Aa）;依据公式计算右心室4个壁瓣环处Tei指数，取其平均值作为右心室整体心肌做功指数。于超声心动图检查24h内对入选者行右心导管检查，测定每搏量、心输出量、每搏量指数和心脏指数。结果 两种方法测定的右心室功能参数均具有一定的相关性，其中，Tei指数与右心导管测定的右心室功能参数相关性最好，而Aa、Ea与右心导管测定的右心室功能参数呈低度相关，右心室面积变化率、Sa、Ea/Aa与右心导管测定的右心室功能参数呈中度相关。结论 QTVI技术是评估PAH患者右心室功能的可靠准确技术。     

Molecular evolution of hepatitis A virus in a human diploid cell line

AIM: To investigate the hotspots, direction, and the time course of evolution of hepatitis A virus in the process of consecutive cell culture passage in human KMB17 diploid cells. METHODS: Wild type hepatitis A virus H2w was serially propagated in KMB17 cells until passage 30, and the full-length genomes of H2w and its six chosen progenies were determined by directly sequencing RT-PCR products amplified from viral genomic RNA. Alignment comparison of sequences from H2w with its six progenies and phylogenetic analysis of the whole VP1 region from H2w, progenies of H2w, and other cell culture adapted hepatitis A virus were then carried out to obtain data on the molecular evolution of hepatitis A virus in the process of consecutive passage in KMB17 cells. RESULTS: Most of the mutations occurred by passage 5 and several hotspots related to adaptation of the virus during cell growth were observed. After that stage, few additional mutations occurred through the remaining duration of passage in KMB17 cells except for mutation in the virulence determinants, which occurred in the vicinity of passage 15. The phylogenetic analysis of the whole VP1 region suggested that the progenies of H2w evolved closely to other cell culture adapted hepatitis A virus, i.e. MBB, L-A-1, other than its progenitor H2w. CONCLUSION: Hepatitis A virus served as a useful model for studying molecular evolution of viruses in a given environment. The information obtained in this study may provide assistance in cultivating the next generation of a seed virus for live hepatitis A vaccine production.