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.     

健康只在一呼一吸间

呼吸是关系人体健康的重要生理机能,调整好呼吸,许多疾病往往就能不治而愈。对此古人有很多经验总结,现介绍如下。凡是治疗各种疾病,要根据不同的情况来安     

影响儿童语言和识字能力的研究进展

现代生活中 ,儿童的语言和识字受家庭认知环境的影响。近年来无论从流行病学的研究 ,还是干预或神经生物的研究 ,均证实儿童早期经验是日后语言和识字能力发展的基础。在早期经验中 ,最关键的是父母与孩子之间的语言交流。通过这样的交流 ,促进儿童早期的语言发育 ,也促进儿童学龄期的阅读理解。儿童保健医生处于独特的位置 ,即在常规保健中指导父母根据不同年龄儿童的发育水平 ,应用有关的技能技巧 ,促进儿童的语言和识字。     

浅议针刺手法

辨证准，取穴精，手法明，是针灸名家一贯之倡导，其中的针刺手法更是提高临床疗效的关键所在，因此解析古人、今人对针刺手法的认识，明确其基本概念和基本操作步骤，使针刺手法真正成为一种技术，而不单单是经验，就会有助于学习掌握应用。故分别从进针手法、行针手法、补泻手法等3个方面阐述了操作步骤中的要点和难点，以冀对针灸手法临床操作规范起到一定的促进作用。     

2008年部分医药杂志征订启事

感冒通中毒，国内有引起血尿和肝肾功能损害等报道。本院收治感冒通中毒以昏睡、抽搐为主要表现的病例2例，其中前1例当时无心电图检查条件，无心电图记录，后1例入院时至出院，有完整的心电图记录。现将感冒通中毒确诊引起“病窦”样心律失常的病例报告如下.[第一段]     

医疗仪器的接地

1 前言 近代医学是基础科学与现代工程技术的结合、应用紧密关联的科学。现代医疗预防机构的水平,取决于其应用现代医疗仪器设备的水平。随着我国人民卫生保健事业的迅速发展,医疗仪器设备的不断增添和更新,已成为各级     

胰岛素样生长因子在人前列腺增生症中作用的探讨

应用免疫组化方法完成了胰岛素样生长因子（ＩＧＦ－Ｉ）在４８例人前列腺增生中的组织定位。组织经４％甲醛固定，石蜡包埋。ＩＧＦ－Ｉ免疫反应主要定位于腺体基底层上皮细胞浆内，阳性染色也见于腺体分泌上皮、鳞状化生上皮、平滑肌细胞和神经纤维细胞内。证实：ＩＧＦ－Ｉ存在于前列腺增生患者的前列腺组织中，并且与前列腺增生的发病有一定关系。