流式细胞仪检测急性婴幼儿白血病干细胞

背景：有关儿童急性髓细胞性白血病干细胞含量的测定及急性髓细胞性白血病患儿缓解后白血病干细胞含量与急性白血病微小残留病之间关系的研究国内外未见报道。 目的：通过测定急性髓细胞性白血病干细胞或急性髓细胞性白血病干细胞-IPIC在儿童急性白血病患儿骨髓单个核细胞中的含量,研究急性髓细胞性白血病患儿缓解后白血病干细胞含量与急性白血病微小残留病水平之间的关联。 方法：收集白血病患儿113例次。采用骨髓单个核细胞分离及单细胞悬液制成单细胞悬液,进行单个核细胞染色、急性髓细胞性白血病干细胞分析及根据初诊免疫表型获得白血病相关表型,并采用该白血病相关免疫表型进行单抗组合和流式细胞术测定分析。 结果与结论：①初诊急性髓细胞性白血病组骨髓单个核细胞中急性髓细胞性白血病干细胞含量明显高于初诊急性淋巴细胞性白血病组和非肿瘤对照组(P均< 0.017),初诊急性淋巴细胞性白血病组骨髓单个核细胞中急性髓细胞性白血病干细胞-IPIC含量显著高于非肿瘤对照组(P < 0.017)。②对33例次缓解急性髓细胞性白血病患儿急性髓细胞性白血病干细胞和急性白血病微小残留病相关性分析发现,两者存在显著负相关性。结果提示,①急性髓细胞性白血病干细胞-IPIC也存在于初诊急性淋巴细胞性白血病患儿骨髓细胞中,且当急性淋巴细胞性白血病获完全缓解时急性髓细胞性白血病干细胞-IPIC含量却没有下降,但非肿瘤对照组标本中急性髓细胞性白血病干细胞-IPIC的含量极微。②急性髓细胞性白血病患儿缓解后骨髓中急性髓细胞性白血病干细胞含量和急性白血病微小残留病水平之间存在着明显的负相关。     

微小RNA -128b与-181a和-223在急性白血病患者中的表达

背景：微小RNA是一类内源性非编码RNA。新近研究认为微小RNA可用作肿瘤标记物,对肿瘤进行分类。 目的：分析微小RNA -181a、微小RNA-128b和微小RNA-223在急性白血病患者中的表达差异。 方法：提取初治急性白血病患者及对照受试者骨髓单个核细胞总RNA,经微小RNA特异性引物反转录后,采用实时定量PCR分析各微小RNA的表达。 结果与结论：与对照受试者相比,无论是急性非淋巴细胞白血病还是急性淋巴细胞白血病患者骨髓单个核细胞的微小RNA-128b,微小RNA-181a和微小RNA-223表达均降低;统计学分析显示,急性非淋巴细胞白血病和急性白血病患者微小RNA-128b和微小RNA-181a表达与对照受试者比较差异有显著性意义(P < 0.05),但急性淋巴细胞白血病患者与对照受试者比较差异无显著性意义(P > 0.05);微小RNA-128b,-181a和-223的表达在急性非淋巴细胞白血病与急性淋巴细胞白血病患者之间差异无显著性意义(P > 0.05)。结果显示微小RNA-128b,-181a和-223有可能是急性白血病诊断与分型的生物标记物。     

急性淋巴细胞白血病的免疫分型及CD4+CD25+T调节细胞检测

背景：在急性淋巴细胞白血病发病过程中,CD4⁺CD25⁺T调节细胞对机体免疫反应可能起着一定的调节作用。 目的：观察急性淋巴细胞白血病患者的免疫分型及外周血CD4+CD25+T调节细胞的变化情况。 方法：采用流式细胞仪对35例急性淋巴细胞白血病患者进行免疫分型,并检测外周血CD4⁺CD25⁺T调节细胞的数目,与18名健康对照作比较。 结果与结论：急性B细胞淋巴细胞白血病22例,急性T细胞淋巴细胞白血病13例;22例急性B细胞淋巴细胞白血病中CD19的阳性表达率最高(100%),而13例急性T细胞淋巴细胞白血病中CD7阳性表达率最高(100%)。急性B细胞淋巴细胞白血病患者外周血CD4⁺CD25⁺T调节细胞和急性T细胞淋巴细胞白血病患者差异无显著性意义(P > 0.05),但均高于健康对照(P < 0.05)。表明急性B细胞淋巴细胞白血病中CD19阳性表达率最高,急性T细胞淋巴细胞白血病中CD7阳性表达率最高,同时急性淋巴细胞白血病患者外周血CD4⁺CD25⁺T调节细胞水平显著增高。     

急性髓系白血病细胞血管细胞黏附分子1、CD34和CD117的表达

背景：血管细胞黏附分子1与白血病浸润密切相关,白血病细胞本身是否表达血管细胞黏附分子1,以及与疾病难治是否相关尚无定论。 目的：分析血管细胞黏附分子1、CD34、CD117在急性髓系白血病细胞表面的表达,3者之间的相互关系及与难治性急性髓系白血病的相关性。 方法：采用流式细胞技术检测16例急性髓系白血病细胞中血管细胞黏附分子1、CD34、CD117的表达,其中难治组6例,非难治组10例;同时以正常骨髓单个核细胞标本作对照。 结果与结论：急性髓系白血病细胞CD34、CD117表达高于对照组(P < 0.05)。难治组急性髓系白血病细胞CD34表达明显高于非难治组(P < 0.05)。难治组与非难治组CD117表达差异无显著性意义(P > 0.05)。急性髓系白血病细胞血管细胞黏附分子1表达与对照组比较差异无显著性意义(P > 0.05)。难治组与非难治组血管细胞黏附分子1表达差异无显著性意义(P > 0.05)。表明急性髓系白血病细胞伴CD34表达,为不良预后指标之一,CD117、血管细胞黏附分子1表达与其是否难治无明显相关性。     

心肌及冠状动脉内移植骨髓单个核细胞对猪缺血心肌侧支血管的生成

背景：目前有研究表明,心肌内直接注射骨髓单个核细胞可以使心肌梗死瘢痕区血管新生,改善缺血心肌血供。 目的：观察心肌内及冠状动脉内移植自体骨髓单个核细胞对猪急性心肌梗死后缺血心肌侧支血管生成的作用。 方法：22只小型猪制备急性心肌梗死模型后分为4组：心肌内移植组造模后即刻在缺血心肌内注射自体骨髓单个核细胞悬液;心肌内对照组同样方法即刻心肌内注射Hank’s平衡盐溶液;冠状动脉内移植组在造模后1周,左冠状动脉内注射自体骨髓单个核细胞悬液;冠状动脉对照组在造模后1周,同样方法左冠状动脉内注射Hank’s平衡盐溶液。 结果与结论：心肌内及冠状动脉内移植骨髓单个核细胞后1周,血清碱性成纤维细胞生长因子及血管内皮细胞生长因子水平差异无显著性意义,但明显高于各自对照组(P < 0.01);移植后4周,心肌内移植组与冠状动脉内移植组小血管密度差异无显著性意义,但明显高于各自对照组(P < 0.01);左室舒张末压差异无显著性意义,但明显低于各组对照组(P < 0.01)。提示心肌内及冠状动脉内移植骨髓单个核细胞均有助于促进猪缺血心肌血管新生及侧支循环形成。     

急性淋巴细胞白血病患者GLUT3、TSLC1的表达及临床意义

目的:探讨急性淋巴细胞白血病患者葡萄糖转运蛋白-3(Glucose transporter 3,GLUT3)、肿瘤抑制物1(Tumor suppressor in lung cancer 1,TSLC1)的表达及临床意义.方法:选取2018年4月至2020年4月期间我院诊治的59例急性淋巴细胞白血病患者作为研究对象的研究组,另选取53例同期非急性淋巴细胞白血病患者作为研究对象的对照组.比较两组患者骨髓单个核细胞中GLUT3、TSLC1的表达情况,以及患者的不同临床病理特征对骨髓单个核细胞中GLUT3、TSLC1表达的影响.结果:研究组GLUT3阳性表达率高于对照组、TSLC1阳性表达率低于对照组(P<0.05);血红蛋白(异常)、白细胞计数(异常)者GLUT3阳性率明显高于血红蛋白(正常)、白细胞计数(正常)者(P<0.05).白细胞计数(异常)者TSLC1阳性率明显高于白细胞计数(正常)者(P<0.05).结论:在急性淋巴细胞白血病患者骨髓单个核细胞中GLUT3阳性表达率高、TSLC1阴性表达率高.     

端粒酶在小儿急性白血病中表达的意义

目的 探讨端粒酶在小儿急性白血病中的表达及作为预测病情，判断预后标志物的可能性。方法 采用端粒重复序列扩增-微孔杂交法（TRAP-Kyb)，检测16例急性白血病患儿骨髓和外周血单个核细胞端粒酶活性，对照组为10例非白血病血液病患儿的骨髓及5例正常健康小儿的外周血单个核细胞，结果 16例急性白血病患儿表达阳性率83.1%)；10例非白血病血液病患儿有2例呈低度阳性表达，5例正常健康小儿外周血单个核细胞中未见阳性表达。结论 端粒酶活性在急性白血病患儿骨髓和外周血单个核细胞中明显升高，表明端粒酶的活性与急性白血病的发生可能有着密切关系。检测其活性可能成为一种评估急性白血病病情及预后的有用指标。     

急性淋巴细胞白血病患者骨髓细胞中CCL2 mRNA的表达**

背景：临床工作中希望能够根据骨髓CCL2表达对急性淋巴细胞白血病患者进行危险分层和预后判断。 目的：观察急性淋巴细胞白血病患者骨髓细胞中CCL2 mRNA的表达情况。 方法：初诊50例急性淋巴细胞白血病患者为实验组,30例非血液肿瘤患者为对照组。初诊急性淋巴细胞白血病患者化疗2个疗程后按疗效分为完全缓解组43例,未完全缓解组7例。实验抽取研究对象骨髓5 mL,采用半定量聚合酶链反应法检测CCL2 mRNA表达。 结果与结论：①初诊急性淋巴细胞白血病组CCL2 mRNA表达水平明显高于对照组(P < 0.05);完全缓解组CCL2 mRNA水平明显低于未完全缓解组(P < 0.01);完全缓解组治疗后CCL2 mRNA表达水平明显低于治疗前(P < 0.01)。未完全缓解组治疗2个疗程后CCL2 mRNA表达水平无明显下降(P > 0.05)。②前B-急性淋巴细胞白血病患者骨髓CCL2 mRNA表达水平明显高于普通B及T系急性淋巴细胞白血病患者(P < 0.05)。初诊时白细胞≥50×109 L-1急性淋巴细胞白血病患者CCL2 mRNA表达水平明显高于白细胞<10×109 L-1及10×109 L-1≤白细胞＜50×109 L-1组(P < 0.05),10×109 L-1≤白细胞＜50×  109 L-1组明显高于白细胞<10×109 L-1组(P < 0.01)。结果表明急性淋巴细胞白血病患者骨髓细胞能分泌CCL2,骨髓CCL2 mRNA表达水平与患者初诊时的白细胞计数及免疫分型有一定的关系,在一定程度上能反映患者的近期疗效。     

急性淋巴细胞白血病细胞β_2整合素及L-选择素的表达与意义

目的和方法 :研究急性淋巴细胞白血病 (ALL)细胞粘附分子 β2 整合素 (CD11a、CD11b)及L -选择素 (CD6 2L)的表达及其临床意义。用流式细胞仪检测 45例ALL及 2 5例正常人骨髓单个核细胞的CD11a、CD11b、CD6 2L表达。结果 :①CD11a、CD11b在ALL细胞上表达均明显低于正常人 ,CD11b低表达的阳性率为10 0 % ,5 0 %患者有CD11a低表达。而 6 0 %患者CD6 2L在ALL细胞上表达升高。②CD11a在B -ALL表达明显低于T -ALL表达 ,CD6 2L在B -ALL表达高于T -ALL。③浸润组CD11a表达高于非浸润组 (P <0 0 5 )。④ALL完全缓解组CD11a、CD11b的表达在正常范围。结论 :急性淋巴白血病细胞上存在多个粘附分子的表达异常 ,检测粘附分子有助于判断白血病细胞类型及疗效。     

105例小儿血液病骨髓纤维化观察

目的：探讨小儿血液病与骨髓纤维化的关系。方法：检查１０５例患儿骨髓穿刺活体组织。结果：８１例发生不同程度骨髓纤维化。不同疾病的纤维化例数分别为：急性淋巴细胞性白血病５７例，急性非淋巴细胞性白血病１例，急性粒细胞性白血病３例，急性单核细胞性白血病２例，慢性粒细胞性白血病３例，白血病（不能分类）２例，恶性淋巴瘤（淋巴瘤／白血病）１０例，有３例骨髓活检组织中全片呈纤维化改变。经骨髓涂片检查，分别确诊为：     

Transwell共培养条件下诱导脂肪干细胞成骨能力的改变

BACKGROUND:Under co-culture conditions, mesenchymal stem cells could regulate osteogenic differentiation and osteogenesis of osteoblasts. OBJECTIVE:To observe the osteogenic efficiency of osteoblastic precursor cells co-cultured with undifferentiated bone marrow-derived mesenchymal stem cells, umbilical cord-derived mesenchymal stem cells, or placenta-derived mesenchymal stem cells in mineralization medium. METHODS:Adipose-derived stem cells were induced in osteogenic differentiation medium for 7 days before being indirectly co-cultured with undifferentiated mesenchymal stem cells isolated from different tissues (bone marrow group, umbilical cord group and placenta group) in Transwell plates. Induced adipose-derived stem cells cultured alone served as control group. At different experimental intervals, quantitative analysis of alkaline phosphatase activity and calcified matrix was preformed to observe the effects of mesenchymal stem cells from different sources on the osteogenic efficiency of induced adipose-derived stem cells. RESULTS AND CONCLUSION:Expression of alkaline phosphatase was significantly higher in different experimental groups than the control group (P < 0.05), and it was also higher in the bone marrow group than the umbilical cord and placenta groups (P < 0.05). Quantitative analysis of calcified matrix revealed that the experimental groups were significantly higher than the control group (P < 0.05); and in experimental groups, the umbilical cord group was higher than bone marrow group and placenta group(P < 0.05). These findings indicate that the osteogenic efficiency of induced adipose-derived stem cells is improved dramatically under co-culture conditions.     

Immunophenotyping of acute lymphoblastic leukaemia in routinely processed bone marrow biopsy specimens

AIMS: To assess the value of immunophenotyping of acute lymphoblastic leukaemia (ALL) in routinely processed bone marrow trephine biopsy specimens and to establish a minimum panel of antibodies to assess lymphoid lineage and enable differentiation from acute myeloid leukaemia. METHODS: 45 routinely processed bone marrow biopsy specimens (formalin fixed, paraffin embedded and mildly decalcified in EDTA) reported to contain leukaemic infiltrates on the basis of cytomorphological and enzyme-cytochemical analysis of bone marrow smears (22 c-ALL, 11 T-ALL, 2 B-ALL, 10 u-ALL (unclassified)) were immunostained by the ABC method with a broad panel of 26 antibodies against various haemopoietic antigens. RESULTS: Staining with antibodies directed against myeloperoxidase and lysozyme showed that seven cases were either biphenotypic or mixed leukaemias (2), or of myelogenous origin (acute myeloid leukaemia (AML)-M1 (2); AML-M4 (2); AML-M5a (1)). Five of these seven cases had been diagnosed initially as u-ALL. Three further cases with no compact leukaemic infiltrates were excluded. ALL was confirmed in the remaining 35 cases. Because of revised diagnoses, the total numbers of ALL subtypes changed (23 c-ALL, 8 T-ALL, 2 B-ALL, 2 u-ALL). Immunostaining of more than 10% of blast cells in at least one case was found with 19 of the 26 antibodies. The most sensitive lineage specific antibodies for diagnosis were found to be anti-CD10 for c-ALL (22/23) and beta F1 for T-ALL (6/8). Expression of aberrant antigens was fairly common--for example, 7/23 cases of c-ALL stained with antibodies against T cell associated antigens. CONCLUSIONS: Immunohistochemical investigation of routinely processed bone marrow biopsy specimens enables reliable detection of ALL subtypes c-ALL and T-ALL. A minimum panel of antibodies, against TdT, CD34, myeloperoxidase, lysozyme, CD10, CD79a, and CD20, and the antibody beta F1, is proposed for the immunophenotyping of acute leukaemia.     

Immunophenotypic aberrancy in adult acute lymphoblastic leukemia

Some recent reports indicate a high frequency of immunophenotypic aberrancy in acute lymphoblastic leukemia (ALL). To investigate this issue with regard to adult ALL, the authors reviewed the immunophenotyping data from 39 cases analyzed in their clinical laboratory. Flow cytometric analysis of peripheral blood and/or bone marrow was performed with the use of a panel of 21 B-cell, T-cell, and myeloid monoclonal antibodies (MoAbs). The surface antigen profiles of the leukemic cells were compared with those of normal bone marrow and thymic counterparts, as defined by current models. Twenty-six cases were B-precursor ALL, 8 were T-ALL, and 3 were B-ALL (Burkitt's leukemia). Only two cases coexpressed lymphoid and myeloid antigens. In contrast, intralineage aberrancy was quite common. Immunophenotypes from 13 of 26 B-precursor ALL cases deviated from normal B-lineage marrow cells as defined by a recent classification. The T-ALL cases were also immunophenotypically heterogeneous. This high incidence of aberrant antigen expression in adult ALL suggests that leukemogenesis also involves aberrant differentiation rather than purely a process of maturational arrest.     

透骨消痛颗粒水提与醇提物含药血清干预骨髓基质干细胞活性的实验研究

背景：骨髓基质干细胞根据环境而有不同的分化路径,在特定的环境中有分化为透明软骨细胞的趋势,可能为治疗骨性关节炎提供新思路。 目的：观察透骨消痛颗粒水提与醇提物含药血清对骨髓基质干细胞活性的影响。 方法：制备透骨消痛颗粒水、醇提物,108只SD大鼠随机摸球法均分为低、中、高剂量对照组、水、醇提物组,腹主动脉采血制备含药血清。取4周龄SD大鼠四肢骨髓基质干细胞,第3代同步化后用含药血清进行干预,MTT检测其活性,流式细胞仪检测其周期分布,Real time PCR检测Cyclin D1 mRNA表达,Western Blot检测Cyclin D1蛋白表达。 结果与结论：透骨消痛颗粒水、醇提物含药血清干预48 h后,软骨细胞的A值中高剂量组明显高于对照组(P < 0.01,P < 0.05);各组G₀/G₁期细胞,水、醇提物组明显低于对照组(P < 0.01),水提物组明显低于醇提物组(P < 0.05);各组增殖指数及Cyclin D1 mRNA及蛋白表达水、醇提物组明显高于对照组(P < 0.01),水提物组明显高于醇提物组(P < 0.05)。说明透骨消痛颗粒水醇提物含药血清通过上调Cyclin D1的表达,加速骨髓基质干细胞周期的进程,从而促进其增殖,且透骨消痛颗粒水提物的效果优于醇提物。     

骨髓间充质干细胞移植脑梗死大鼠：神经功能恢复与突触素的表达

BACKGROUND:Synaptophysin plays an important role in the recovery of neural function after cerebral ischemia. OBJECTIVE:To investigate the effects of bone marrow mesenchymal stem cell transplantation on nervous function and expression of synaptophysin after cerebral infarction. METHODS:Totally 60 rats were equivalently randomized into four groups, including sham operation, control, model and stem cell treatment groups. Rats in the control, model and stem cell treatment groups were used for preparing cerebral infarction models, and the remaining underwent the sham operation. After 1 day of modeling, bone marrow mesenchymal stem cells were transplanted into the rat lateral ventricle in the stem cell treatment group, and rats in the control group was given the injection of the same amount of PBS. After 1, 7 and 14 days of treatment, rat’s neurological function was scored on beam-walking test, rotarod test and screen test, and expression of synaptophysin was detected by RT-PCR and immunohistochemical assay. RESULTS AND CONCLUSION:At 7 and 14 days after treatment, the beam-walking test, rotarod test and screen test scores in the stem cell treatment group were significantly lower than those in the control and model groups (P < 0.05), and the above scores showed no significant differences between the control group and model group (P > 0.05). At 1 day after treatment, the mRNA expression of synaptophysin and the number of synaptophysin-positive cells in the sham operation group were significantly higher than those in the other three groups (P < 0.05); at 7 and 14 days after treatment, the mRNA expression of synaptophysin and the number of synaptophysin-positive cells in the stem cell treatment group were significantly increased compared with the other three groups (P < 0.05), and additionally, the mRNA expression of synaptophysin and the number of synaptophysin-positive cells in the sham operation group were significantly lower than those in the model and control groups (P < 0.05). These findings suggest that bone marrow mesenchymal stem cell transplantation can effectively promote the recovery of neurological function in cerebral infarction rats, and partially promote the formation of synaptophysin.     

骨髓间充质干细胞对创伤性骨折愈合的促进作用

BACKGROUND:In recent years, the development of stem cell culture and isolation technologies provides new therapeutic choices for fracture healing. OBJECTIVE:To investigate the effect of exogenous bone marrow mesenchymal stem cells on bone fracture healing in traumatic fracture rats and on the migration ability of endogenous bone marrow mesenchymal stem cells. METHODS:Femoral fracture models were made in 48 Wistar rats and then randomized into experimental group and control group (n=24/group). Bone marrow mesenchymal stem cells from another healthy rats were isolated using adherent method and then injected into the rats via the tail vein in the experimental group. Rats in the control group were given the same volume of normal saline. At 2, 3, 4, 8, 12 weeks after injection, we extracted bone marrow mesenchymal stem cells from the femur of rats in the two groups. RT-qPCR was used to detect expression levels of type I collagen and CD44. Transwell method was used to detect cell migration ability. Immunohistochemitry method was employed to detect expression of nerve growth factors in the callus. RESULTS AND CONCLUSION:mRNA levels of type I collagen and CD44 in rat bone marrow mesenchymal stem cells were significantly higher in the experimental group than the control group at 2, 3 and 4 weeks after injection (P < 0.05). Compared with the control group, the higher migration ability of bone marrow mesenchymal stem cells was found in the experimental group at 2 and 3 weeks after injection (P < 0.05) as well as the higher expression of nerve growth factor in the callus in the experimental group at 3, 4, 8, 12 weeks after injection. All these findings suggest that exogenous bone marrow mesenchymal stem cells can improve the migration ability of endogenous bone marrow mesenchymal stem cells and the expression of nerve growth factor in the callus in rats with femoral fracture, thereby promoting fracture healing in rats.     

去卵巢骨质疏松大鼠骨髓间充质干细胞的体外成骨诱导

背景：细胞学研究表明,骨髓间充质干细胞在绝经后骨质疏松症的发病过程中起有重要作用。 目的：观察去卵巢骨质疏松大鼠骨髓间充质干细胞的体外成骨分化。 方法：将6月龄雌性SD大鼠双侧卵巢切除建立骨质疏松模型。实验分为4组：正常干细胞组、骨质疏松干细胞组、正常干细胞成骨诱导组、骨质疏松干细胞成骨诱导组。全骨髓贴壁法培养正常和骨质疏松大鼠骨髓间充质干细胞至第3代细胞用于实验。倒置相差显微镜观察细胞形态,流式细胞仪测定细胞周期、增殖指数。加成骨诱导液进行成骨诱导,检测各组骨髓间充质干细胞碱性磷酸酶活性,茜素红染色法比较各组钙结节的形成。 结果与结论：正常干细胞成骨诱导组、骨质疏松干细胞成骨诱导组均具有成骨细胞的形态特征,但骨质疏松干细胞成骨诱导组形态变化相对缓慢。正常干细胞组细胞增殖指数高于骨质疏松干细胞组(P < 0.05);成骨诱导组碱性磷酸酶活性均明显高于相应的正常或骨质疏松干细胞组(P < 0.05);正常干细胞成骨诱导组明显高于骨质疏松干细胞成骨诱导组(P < 0.05)。成骨诱导组茜素红染色均呈阳性,相应的正常或骨质疏松干细胞组呈阴性;且正常干细胞成骨诱导组染色强于骨质疏松干细胞成骨诱导组。提示去卵巢骨质疏松大鼠骨髓间充质干细胞的增殖能力和成骨分化能力明显降低,可能与去卵巢大鼠骨质疏松的发生相关。     

骨髓单个核细胞移植治疗脑出血

BACKGROUND:It has been proved that bone marrow mononuclear cell transplantation can obviously improve neurological function of rats with cerebral hemorrhage. OBJECTIVE:To investigate the effects of transplanted bone marrow mononuclear cells on the neurological function and apoptosis in perihematomal brain tissues following cerebral hemorrhage in a rat model. METHODS:Twenty-four Sprague-Dawley rats were given stereotaxical injection of collagenase IV into the caudate nucleus to establish cerebral hemorrhage models in transplantation group (n=12) and model group (n=12), and then at 6 hours after cerebral hemorrhage, rats in these two groups were administrated 3x10¹⁰/L allograft bone marrow mononuclear cells and the same amount of PBS, respectively. Another 12 rats were given no interventions as control group. Neurological functions of rats were assessed at 1, 4, 8, 16 days after cerebral hemorrhage; pathological changes of the injury sites were observed at 16 days after transplantation; neuronal apoptosis rates in the perihematomal brain tissue were detected by flow cytometry at 2 and 4 days after transplantation. RESULTS AND CONCLUSION:The modified neurologic severity scores in the transplantation group were significantly lower than those in the model group at 8 and 16 days after cerebral hemorrhage (P < 0.05). In the control group, cells in each layer arranged closely with complete structure, and neurons and glial cells were in good shape; in the model group, perihematomal brain tissues were loose with intercellular gap, in which most neurons and glial cells became necrotic; in the transplantation group, cells in each layer arranged closely and regularly, and glial cell proliferation occurred. Besides, compared with the model group, the neuronal apoptosis rate in the transplantation group was significantly lower (P < 0.05). To conclude, bone marrow mononuclear cells can significantly enhance the neurological function recovery and reduce neuronal apoptosis in the brain of cerebral hemorrhage rats.     

股骨头髓芯减压为基础治疗早期股骨头坏死

背景：髓芯减压治疗早期股骨头坏死效果较好,而且髓芯减压方法简单易行,即使远期治疗效果不理想也不影响行人工全髋关节置换。 目的：探讨以股骨头髓芯减压为基础的3种方法治疗早期股骨头坏死的临床疗效。 方法：根据国际骨循环研究学会(Association Research Circulation Osseous,ARCO)股骨头坏死分期标准,纳入股骨头坏死患者46例(61髋),Ⅰ期21例(29髋),Ⅱ期25例(32髋)。其中15例(23髋)行单纯髓芯减压治疗,18例(25髋)行髓芯减压联合自体骨髓单个核细胞移植治疗,13例(13髋)行髓芯减压联合多孔钽棒置入治疗。 结果与结论：全部患者均获12个月随访,3组患者末次随访时髋关节Harris评分均高于术前(P < 0.01),末次随访时联合细胞移植组和联合多孔钽棒组Harris评分高于单纯髓芯减压组(P < 0.01),而联合细胞移植组和联合多孔钽棒组比较差异无显著性意义(P > 0.05)。髋关节X射线检查：单纯髓芯减压组2例(3髋)发展为塌陷、联合细胞移植组1例(1髋)发展为塌陷,联合多孔钽棒组2例(2髋)出现塌陷。结果可见以股骨头髓芯减压为基础的3种方法治疗早期股骨头坏死均有效,其中髓芯减压联合自体骨髓单个核细胞移植或多孔钽棒置入近期疗效优于单纯髓芯减压治疗。