骨髓间充质干细胞防治多脏器衰竭

Objective The patients with lethal irradiation after sucessful hematopoietic stem cells transplan-tation had blood recovery, but did not avoid to died of multiple organ failure(MOF). To overcome the block, the article investigated mechanisms of mesenchymal stem cells (MSCs) protecting lethal radiated mice from multiple organ failure after haploid bone marrow cells transplantation. Method BALB/c mice irradiated with 8Gy60COγ-rays were randomly divided into two groups: MSCs group, infused MSCs labeled with cm-DiI and bone marrow monocytes of CB6F1 mice; Control group, only infused bone marrow monocytes; normal group, mice were infused cm-DiI marked MSCs without irradiation. The distribution of MSCs and the serous densities of Il-2, Il-10 and TNF-α in the recipients were observed after transplantation. Results MSCs collected in the bone marrow and the intes-tine in normal group at 15 d,in MSCs group MSCs enriched the different organs at 3,15 and 30 d. MSCs regulated down the secretion of IL-2 and TNF-α,and up the IL-10 density. Conclusions MSCs protected mice from multiple organ failure through above effects and may be open a new treatment strategy on acute radiation syndrome by stem cells.     

染色体核型分析及短串联重复序列-聚合酶链反应检测非清髓异基因造血干细胞移植造血细胞嵌合体

非清髓异基因造血干细胞移植 (ＮＡＳＣＴ)由于与传统的异基因造血干细胞移植 (ａｌｌｏ ＳＣＴ)植入方式不同 ,ＮＡＳＣＴ多通过建立稳定的嵌合体 ,逐渐过渡为供者植入[1 ] 。因此 ,ＮＡＳＣＴ后对植入状况的评估显得更为重要。为评估ＮＡＳＣＴ后植入状况 ,我们以传统的细胞遗传学分析结合我室新建立的短串联重复序列 聚合酶链反应 (ＳＴＲ ＰＣＲ) ,对我院开展的 15例ＮＡＳＣＴ患者进行了随访观察 ,现将结果报告如下。病例和方法1　病例　在我院行ＮＡＳＣＴ的血液病患者 15例 ,男 10例 ,女5例 ,年龄 2 3～ 5 6岁 (中位年龄 36岁 )。重…     

骨髓间充质干细胞防治多脏器衰竭

Objective The patients with lethal irradiation after sucessful hematopoietic stem cells transplan-tation had blood recovery, but did not avoid to died of multiple organ failure(MOF). To overcome the block, the article investigated mechanisms of mesenchymal stem cells (MSCs) protecting lethal radiated mice from multiple organ failure after haploid bone marrow cells transplantation. Method BALB/c mice irradiated with 8Gy60COγ-rays were randomly divided into two groups: MSCs group, infused MSCs labeled with cm-DiI and bone marrow monocytes of CB6F1 mice; Control group, only infused bone marrow monocytes; normal group, mice were infused cm-DiI marked MSCs without irradiation. The distribution of MSCs and the serous densities of Il-2, Il-10 and TNF-α in the recipients were observed after transplantation. Results MSCs collected in the bone marrow and the intes-tine in normal group at 15 d,in MSCs group MSCs enriched the different organs at 3,15 and 30 d. MSCs regulated down the secretion of IL-2 and TNF-α,and up the IL-10 density. Conclusions MSCs protected mice from multiple organ failure through above effects and may be open a new treatment strategy on acute radiation syndrome by stem cells.     

非清髓异基因造血干细胞移植研究进展(附视频)

本文结合国内外非清髓异基因造血干细胞移植(NST)的最新研究进展,从NST的现状、概念和理念、研究热点,特别是NST的疗效、受者存活率、白血病复发、移植后移植物抗白血病效应等方面作了重点介绍,以期为国内的NST临床和基础研究提供借鉴.     

CBA法研究HLA全相合与单倍体相合移植患者血清细胞因子表达的差异性

本研究旨在探讨非清髓异基因造血干细胞HLA全相合移植（HLA-identical nonmyeloablative allogeneichematopoietic stem cell transplantation,iNAHSCT）和单倍体相合移植（HLA-haploidentical nonmyeloablative allogeneichematopoietic stem cell transplantation,hiNAHSCT）患者血清细胞因子表达的差异性,用流式细胞微珠阵列法（flow cy-tometric bead array,CBA）检测20例白血病患者移植前后不同时间点IL-2、IL-4、IL-6、IL-10、TNF-ɑ、γ-IFN、IL-17浓度的变化。结果表明,IL-2分别在iNAHSCT及hiNAHST后1周、2周起表达上调,两类移植各时间点比较无差异（P〉0.05）;γ-IFN都在移植后4周起上调,两类移植后的浓度无差异（P〉0.05）;IL-4在iNAHSCT及hiNAHSCT中分别于移植后2周、移植后1周起增高,iNAHSCT的IL-4浓度高于hiNAHSCT（P〈0.01）;IL-6在iNAHSCT及hi-NAHSCT中分别在移植后1周、移植后2周起上调,移植后4周为峰值,且hiNAHSCT的IL-6浓度高于iNAHSCT（P〈0.02）;IL-10在iNAHSCT、hiNAHSCT中分别于从移植后1、2周起增高,iNAHSCT中IL-10的表达高于hiNAH-SCT（P〈0.05）。TNF-ɑ在hiNAHSCT中从移植后1周、在iNAHSCT中从移植后2周起上调;hiNAHSCT中TNF-ɑ增高的幅度高于iNAHSCT（P〈0.01）。IL-17分别于hiNAHSCT及iNAHSCT后移植后1周、移植后4周时增高,hi-NAHSCT IL-17增高的幅度高于iNAHSCT的（P〈0.05）。结论：两类移植后所检测到的细胞因子水平均明显增高,移植后4周为峰值。IL-6、TNF-ɑ、IL-17在hiNAHSCT中增高明显,而IL-4,IL-10在iNAHSCT中增高显著。     

初诊急性白血病凝血指标异常及其临床意义探讨

本研究旨在探讨初诊急性白血病(AL)(急性早幼粒细胞白血病除外)凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)、血浆纤维蛋白原(FIB)、血浆凝血酶时间(TT)及D-二聚体(D-D)预测出血风险的临床意义,探究引起上述5项凝血指标异常的影响因素及相关性。回顾分析114例AL患者不同凝血指标异常情况下的出血情况,分析年龄、性别、白血病类型、白细胞及血小板计数、骨髓中原始细胞比例、细胞遗传学变化与凝血指标的关系。结果表明:初诊AL的凝血指标异常的发生率高达78.1%;凝血5项均正常的患者亦可能合并轻度出血;异常的凝血指标数量越多,出血程度越重;PT及D-D对其2级出血诊断具有一定敏感性;凝血异常发生率与初诊时骨髓中原始细胞的比例存在相关性(χ2=4.184,OR=1.021,P﹤0.05),与年龄、性别、白血病类型、白细胞及血小板计数、细胞遗传学异常无明显相关(P﹥0.05);起病时骨髓原始细胞比例与D-D值显著相关(r=0.3,P﹤0.01)。结论:AL患者的凝血指标异常的发生率高;异常的凝血指标越多,则出血程度越重,其中PT及D-D对2级出血诊断具有一定敏感性;起病时骨髓中原始细胞比例与凝血指标异常(尤其是D-D)存在显著相关性,而老年、高白细胞数及不良细胞遗传学异常与凝血异常无关;通过对PT、APTT、TT、FIB、D-D的监测,为临床判断及防治出血事件提供实验依据。     

极重度骨髓型与肠型急性放射病的救治进展

极重度骨髓型与肠型急性放射病(ARS)一直是医学难以攻克的热点问题。本文从4个方面概括ARS治疗的新进展:①WR-2721作为细胞防护剂的机制和早期应用,可能阻断组织器官的不可逆性放射损伤;②细胞因子治疗放射病的新进展,提出重视造血恢复后患者的免疫重建;③造血干细胞移植的适应证,骨髓间充质干细胞对放射病有重要治疗意义;④放射病的抗感染防护和治疗,临床真菌感染症状出现前,抗真菌用药的适应证。     

加强造血细胞移植治疗急性放射病的临床研究

造血干细胞移植(HSCT)不仅是极重度骨髓型放射病的关键治疗手段,也是偏轻的肠型急性放射病的重要治疗措施.但HSCT在治疗急性放射病(ARS)方面的进展仍较缓慢,不但移植成功的病例不多,有关的临床和基础研究较少,而且相关的理念和观念等也有许多值得商榷之处.     

大肠腺癌组织MDR1表达与肠系膜淋巴结转移关系的研究

目的　探索大肠腺癌组织多药耐药基因 (MDR1)表达与大肠腺癌分化程度及肠系膜淋巴结转移之间的关系。方法　以光敏生物素标记MDR1cDNA探针 ,链亲和素胶体金为检测系统做原位杂交 (ISH SAG)检测大肠癌MDR1mRNA表达 ,同时用LSAB法对P 糖蛋白进行免疫组织化学检测。结果　大肠腺癌MDR1mRNA表达阳性的肠系膜淋巴结转移率与MDR1表达阴性的肠系膜淋巴结转移率两者有显著性差异 (P <0 0 5) ,大肠癌MDR1表达阳性率与分化程度无显著性差异(P >0 0 5)。结论　MDR1表达高低与大肠腺癌肠系膜淋巴结转移呈正相关 ,MDR1阳性表达与细胞分化程度比较无统计学意义。MDR1表达的检测对判定化疗疗效及预后有一定的意义。