脊髓损伤的康复治疗体会

我院自1997年6月～2004年9月共收治脊髓损伤病人32例，现就其康复治疗体会报道如下。     

~(60)钴辐射降低海产食品中亚硝胺及前体物的研究

~(60)钻辐照能有效地降低食品中亚硝胺及亚硝酸盐含量。虾皮含54.6ppb NDMA,经~(60)钻照射10和20 kGy后,NDMA分别减少83.9％和96.6％。其作用在水溶液中优于食品样。亚硝胺的主要降解产物是相应的胺和亚硝酸,降解后无重合成现象。水分可以影响辐射破坏亚硝胺。~(60)钻辐射对硝酸盐无分解作用。     

腹腔内疝的CT表现

腹腔内脏器穿过腹膜或膜突入另一腹腔内间隙称为腹腔内疝（internal abdominal hernias）。最常表现为一段小肠嵌入正常或异常的腹腔内孔道，引起急性小肠梗阻。作为疝口的结构可以是腹腔内的正常解剖结构，如裂孔、隐窝、陷窝等，     

兔动静脉短路环法诱导组织工程骨支架材料血管生成的初步研究

Objective To compare the effects of 2 vascular carriers, arteriovenous loop and arteri-ovenous bundle, on inducing angiogenesis in coral scaffold of vascularized tissue-engineered bone in animal models.Methods Thirty-six adult male New Zealand rabbits were randomized into 2 even groups.In group A, an arteriovenous loop (AVL) was formed by microsurgical anastomosis at the proximal ends between the femoral poptiteal artery and vein, and placed in the circular side groove of the coral block (6 mm × 8 mm × 10 mm) .In group B, flow-through vessels bundles of both femoral artery and vein were placed in the side grooves of the coral block.All the implants in 2 groups were wrapped by a micro-porous expand-ed-polytetrafluoroethylene (ePTFE) membrane, and fixed subcutaneously by suturing.Evaluation methods included gross morphological observations, histological examinations, India ink perfusion and vascular casting after 2, 4, 6 weeks.The density of blood vessels was analyzed by the statistical software SPSS 10.0.Results All the corals were encased by newly formed fibrovascular tissues in 2 groups.Ink-stained vessels distributed the surfaces and side grooves, and invaded the interspaces of corals.The degree of vascularization increased over the course of experiment.Blood vessel density demonstrated a significant continuous increase between 2 and 6 weeks after implantation in group A.The mean value of blood vessel density in group A (2 weeks 276.60±4.67, 4 weeks 517.20±10.66, 6 weeks 707.00 ±11.87) was significantly higher than in group B (2 weeks 153.60 ±7.16, 4 weeks 269.40±6.80, 6 weeks 279.20±6.53) (P <0.01).Vascular casting showed that in group A, significant blood vessels sprouted from all areas of the loop, espe-cially at the entrance of the arteriovenous pediele where the small tubes were densely interconnected.In group B, however, no blood vessels sprouted from the arteriovenous bundles and only some small vessels grew from the entrance and exit.Conclusions A vascularized coral model can be constructed by inserting an ar-teriovenous loop or an arteriovenous bundle, useful in vascular bone tissue engineering.The former, however, have stronger abilities to induce angiogenesis than the latter.     

Hunt综合征血酯酶标记T细胞动态观察

成人带状疱疹偶而侵犯面神经膝状节,引起以面神经瘫痪为主的一组症状,名为Hunt综合征。本文报告12例,并作了外周血酯酶标记T细胞的动态观察。 一般资料 12例中男8例,女4例。平均年龄为40.9(16～70)岁。病前患有感冒发烧史者5例,另7例伴有其它慢性躯体疾病。临床表现:耳部疱疹12例(右侧8例,左侧4例);耳部剧痛11例,轻度发烧2例,患侧头痛1例;眩晕9例(其是1例不能站立、2例伴有恶     

肝脏磁共振造影剂的种类及临床应用

肝脏MR造影剂分为 4大类:(1)分布于细胞外间降或间质间隙的,如Gd DTPA;(2)分布于网状内皮细胞系统或巨噬细胞 单核细胞吞噬细胞系统的,如SPIO;(3)肝细胞选择性的,如Mn-DPDP,Gd—BOPTA,Gd-EOB-DTPA;(4)血管内或血池性MR造影剂,如USPIO,AMI-227。本文详细介绍了上述4类肝脏MR造影剂的构成、作用机制、临床应用及影像特点,并介绍了肝脏MR造影剂今后发展的方向。     

以零价铜为催化剂的“活性”可控自由基聚合反应

研究了零价铜为催化剂,以ＣＣｌ４为引发剂,在２,２’－邻二吡啶（ｂｐｙ）或１,１０－邻二氮菲（ｐｈｅｎ）存在下的苯乙烯或甲基丙烯酸甲酯的“活性”／可控自由基聚合反应。研究结果表明：聚合过程中ｌｎ（［Ｍ］ｏ／［Ｍ］）与反应时间成线性增长关系,同时生成的聚合物的数均分子量与单体转化率也成线性增长关系,聚合过程呈现“活性”特征。     

应用高通量生物技术预测乳腺癌新辅助化疗敏感性研究进展

乳腺癌是一种对化疗相对敏感的肿瘤,新辅助化疗在乳腺癌的综合治疗中占有重要的地位[1]。新辅助化疗在观察化疗药物的敏感性、局部肿瘤降期和提高保乳率等方面显示出明显的优势[2]。研究显示,新辅助化疗后获得病理缓解的病例,其远期生存率明显提高[3-4]。     

K252a对腺样囊性癌培养中许旺细胞生长的阻断作用

目的观察并探讨K252a在体外坐骨神经长出的许旺细胞对腺样囊性癌细胞趋化生长中的影响。方法采用细胞培养技术,将经神经营养素的高亲和受体Trk特异性阻断剂K252a预处理的小鼠坐骨神经与腺样囊性癌细胞共培养（设24组）,以正常小鼠坐骨神经与腺样囊性癌细胞共培养为对照组（设24组）;结果与对照组相比,经K252a预处理的坐骨神经与腺样囊性癌细胞共培养长出的许旺细胞增生组数及趋化性生长组数X^2值分别为14．03、26．32,P值均小于0．025,说明两组之间的差异非常显著,许旺细胞丧失趋化性及细胞增生未被促进。结论K252a在许旺细胞对腺样囊性癌细胞趋化生长中的阻断作用间接地表明神经营养素可促进许旺细胞增生及向腺样囊性癌细胞趋化迁移,这可能是腺样囊性癌嗜神经性重要机制之一。