经后囟穿刺部分换血治疗新生儿红细胞增多症

因新生儿周围血管细，血液淤滞粘稠、外周静脉穿刺成功率低，加之抽血量大，在抽血过程中易发生凝固等因素，而难以一次换血达到预定值，在临床实践中我们探索经后囟穿刺部分换血治疗新生儿红细胞增多症，取得满意疗效，现将方法报告如下：     

重症肌无力患者造血干/祖细胞及其亚群富集纯化的研究

目的:获得高纯度造血干/祖细胞及其亚群,用于重症肌无力(MG)造血干细胞移植治疗和生物学特性的研究。方法:用免疫磁珠法(MiniMACS)从MG骨髓中富集CD34+细胞后再用荧光激活细胞分选(Fluorescent activatedcell sorter,FACS)纯化CD34+/CD38+和CD34+/CD38-细胞亚群。结果:MiniMACS分选的CD34+细胞群纯度达90％,FACS分选的CD34+/CD38-和CD34+/CD38+两细胞亚群纯度可达95％以上。结论:联合使用MiniMACS和FACS可迅速大量纯化HSC/HPC及其重要细胞亚群,可用于临床造血于细胞移植、基因治疗和研究HSC/HPC及其亚群生物学特性。     

心肌梗死患者的自体骨髓干细胞植入

Stafan Jansson等在Lancet今年1月14日（113页）报道了首项随机化、双盲的STEMI患者的自体骨髓干细胞植入临床试验。在4个月的随访中，见到干细胞治疗组的梗死范围明显缩小，区域性收缩功能恢复率较好，但左室射血分数、心肌灌注及心肌代谢未见改善。     

造血和血管发育

血细胞的产生和血管的发育必须同步 ,才能满足机体的需要。研究表明 ,无论是在胚胎时期还是出生后 ,造血系统和血管的发育都是密不可分的统一整体 ,它们不仅具有共同的祖先细胞 ,而且胚胎期和出生后的血管发育机制也很相似[1 ] 。本文就有关研究进展做一综述。1.胚胎期的造血和     

脐血CD34^＋／CD19^—细胞与体外培养集落的相关性分析

用两种单克隆抗体（单抗）标记脐血造血祖细胞表面抗原（ＨＰＣＡ，ＣＤ３４）用流式细胞仪分析，并比较两种单抗标记的ＣＤ３４＾＋细胞与体外培养的粒单细胞集落形成单位（ＣＦＵ－ＧＭ），红系爆式集落形成单位（ＢＦＵ－Ｅ）和混合集落形成单位的相关性，结果表明脐血有核细胞中，抗ＨＰＣＡ－２ＦＩＴＣ阳性的细胞占１．０５±０．７２％，Ｔｕｋ３（纯抗体）阳性细胞占２．０６±１．２５％，差别显（Ｐ＜０．０５），每μｌ     

加入台湾华艺CEPS中文电子期刊服务声明

2005年10月22日-25日在上海召开第八届国际组织工程协会年会。从会议上获悉，在“十五”期间，我国组织工程肌腱构建技术、组织工程皮肤制备工艺、组织工程骨构建与材料结合、亚全能干细胞可塑性、干细胞分离纯化技术、新型血液调控因子、种子细胞扩增技术、神经损伤再生套管等项目均取得明显的原始创新性。国家组织工程中心主任曹谊林教授报告了我国在这一领域所取得的领先国际成就。     

去细胞喉支架的制备及喉肌细胞再生的可行性研究

Objective To prepare a deeelhilarized whole laryngeal scaffold by utilizing a perfusion-decellularized technique, reseed cells on it, and construct recellularized laryngeal muscles. Methods Perfusion decelluarized larynxes were obtained by common carotid arterious perfusion with detergents. Then they were performed by macroscopic view, histological examination, scanning electron microscopy (SEM) and cartilage viability. Decellularized laryngeal scaffold were then reseeded with inducted mesenchymal stem cells (MSCs). Composites were transferred into greater omentums of rabbits after one day' s adherence and harvested after eight weeks. Macroscopic view, histological examination and immunohistochemistry were performed. Results Perfusion larynxes became transparent after two hours. Histology and SEM indicated that perfnsion method shewed better deculluarized effect. More ventages and collagen fibers but no intact cell or anclei were retained in the decellularized martrix. Porosity measured by Image pro plus 6. 0 was 80. 4% ± 3.2% (x ± s). Chondrocyte vitality assay indicated chondrocyte vitality rate in the perfusion group was 86. 9% ± 1.5% . After eight weeks, vascularization formed and integrated cartilage frameworks still remained. Histological examination could clearly show the presence of muscle bundles and vessels. Immunohistoehemical examination indicated that sarcomeric-α actin expressed positively in corresponding areas. Conclusions It is feasible to reseed MSCs into the decellularized laryngeal muscle matrix for constructing tissue-engineered laryngeal muscles. This in vivo maturation into the omentum could be the first step before in situ implantation of the construct.     

炎症性肠病生物治疗评价

随着炎症性肠病免疫发病机制研究的不断深入，已经开展了针对炎症性肠病免疫发病机制的生物学治疗，本扼要综述近年来生物治疗的临床疗效。