刃厚皮片联合微型带真皮下血管网全厚皮片修复截瘫褥疮

目的：应用刃厚皮片联合微型真皮下血管网全厚皮片修复截瘫褥疮。方法：对6例截瘫褥疮，增强全身支持治疗，彻底清除褥疮的炎性肉芽组织及坏死组织后，采用刃厚皮片联合微型真皮下血管网全厚皮片修复．结果：5例Ⅰ期愈合，1例Ⅱ期愈合。结论：本法操作简单，愈合较快，具有一定的耐磨性，为进一步皮瓣修复奠定了基础，是修复难治性截瘫褥疮较理想的方法．     

支架及无支架条件下构建组织工程软骨的研究进展

支架材料的研究是组织工程的研究热点之一,软骨细胞复合培养给组织工程软骨的构建带来希望,单一的材料诸如胶原、透明质酸、壳聚糖、纤维蛋白凝胶等已经证明可以与软骨细胞复合培养,两种或者多种材料复合可以提高材料的性能,更好地用于组织工程软骨的构建,并满足软骨缺损修复的需要;同样,在无支架情况下应用软骨细胞聚集培养、沉淀培养的方法,可以构建组织工程软骨,并给软骨缺损的修复带来新希望,但目前的研究较少。两者是组织工程软骨构建的两个主要方向。     

复方壳多糖组织工程皮肤的组织学特性

目的评价制备的复方壳多糖组织工程皮肤在组织学方面的特性，为其修复皮肤缺损创面提供实验依据。方法通过苏木精-伊红（HE）染色、高碘酸-希夫（PAS）染色、免疫组织化学染色及电镜，观察组织工程皮肤的组织学特征，包括表皮、真皮及两者的连接结构基底膜。结果制备的复方壳多糖组织工程皮肤表皮细胞增殖活跃，分层分化良好，厚约150μm，真皮层细胞生长正常，排列有序。PAS染色示真表皮间有均匀红染的条带出现，免疫组织化学染色结果显示Ⅳ型胶原、Ⅶ型胶原、层黏蛋白反应阳性，在电镜下可见角质形成细胞间大量桥粒，基底层内侧较多半桥粒，与机体皮肤结构相似。结论复方壳多糖组织工程皮肤组织结构良好，符合新型皮肤替代物在治疗皮肤缺损时的组织学要求。     

颜面凹陷畸形的临床分型及整复

目的为规范各类颜面凹陷畸形的临床治疗提供参考性建议。方法根据凹陷部位支撑组织的异常或被覆组织的异常情况。临床上将凹陷畸形分为三型：Ⅰ型为骨性凹陷畸形，包括先天性发育不良。后天性局部骨组织缺损、错位或塌陷；Ⅱ型为软组织凹陷畸形。包括局部软组织萎缩、缺损或黏连；Ⅲ型为复合性凹陷畸形。骨与软组织同时存在萎缩、缺损或较严重的塌陷。并依照此分型分别采用游离皮瓣、肌皮瓣或带蒂肌皮瓣填充法。局部组织瓣填充法。带蒂组织瓣加医用材料混合填充法，游离脂肪颗粒填充法。HA人工骨填充法。硅胶假体填充法。有机玻璃填充法，奥美定填充法。复杂凹陷畸形的综合治疗整复方法。为216例患者修复颜面凹陷畸形。结果随访216例患者6个月至5年，未发现严重并发症，外观效果满意。结论此颜面凹陷畸形的临床分型简单、合理。便于临床对颜面凹陷畸形的整复。具有一定的实用价值。     

膝以下严重开放性创伤的修复

[目的]研究膝以下严重开放性创伤的修复。[方法]自1995年3月～2005年3月收治膝以下严重开放性损伤153例，Ⅰ期修复106例，Ⅱ期修复47例，7种内固定方法，11种皮瓣修复方法。[结果]153例中随访132例，时间6个月～5年，平均17个月，术后功能优良率85．7％，皮瓣成活率良好。皮瓣局部坏死25例，骨不连4例，慢性感染8例，骨髓炎3例。[结论]改进的腓肠神经营养血管皮瓣和皮瓣桥手术扩大了皮瓣的应用范围，减少了并发症的发生。本研究为膝以下严重开放性损伤的修复提供了良好的方法；熟练的显微外科技术和各种组织瓣的合理应用是修复成功的关键。     

两种阴道缩窄术矫正阴道松弛症的疗效分析

目的探讨改良阴道后壁修补术和阴道后壁环肌紧缩术的手术要点和效果,评价两种手术的优点及适应证。方法将42例不同程度阴道松弛的患者分为两组,其中24例行改良阴道后壁修补术,18例行阴道后壁环肌紧缩术,分析观察两组患者手术时间、术中出血量、术后伤口愈合情况,1年后评价两组患者的性生活满意度及阴道的松紧度。结果两种手术方法的手术时间、术中出血量及术后伤口愈合情况无明显差异,但1年后的远期效果包括性生活满意度和阴道的松紧度有明显差异。结论矫正阴道松弛症的目的不仅要达到解剖的恢复,更重要的是恢复功能。要根据患者的实际情况选择最佳的手术方法(A组优于B组)。     

Evidence for motility and pinocytosis in ramified microglia in tissue culture

Ramified microglial cells were investigated in primary cultures of dissociated cerebral cortical tissue from rats. The identification of these cells was confirmed through immunohistochemical staining with 7 monoclonal antibodies selective for microglia. While there was significant variation in staining intensity with different antibodies, all stained the identified ramified cells; the antibodies OX-42 and ED1 yielded the most intense immunoreactivity. Based on distinctive morphological features, the microglia could be identified in living cultures where they were monitored using time-lapse video recording. This technique revealed extremely dynamic features of cellular plasticity and motility. Ramified microglia exhibited constant and rapid alterations in the size and shape of their cell body with an associated extension and retraction of processes; concomitantly, the cells moved about in a circumscribed area. These features of plasticity and motility were unique to this cell type, and correlated with OX-42 immunostaining. The microglia also possessed a differentially high level of pinocytotic activity; this too was correlated with OX-42 staining. From the nature of their morphological plasticity and motility, high pinocytosis, and cellular distribution, it is hypothesized that the ramified microglia specifically function as a system of fluid cleansing in normal brain tissue.     

Mesh fixation with human fibrin glue (Tissucol) in open tension-free inguinal hernia repair: a preliminary report

Background: The Lichtenstein technique for inguinal hernia repair is easy to learn and associated with few complications. However, recent studies have suggested that this technique is inferior to some ‘sutureless’ repair systems in terms of perceived difficulty, operating time, surgeon satisfaction, etc. Methods: We employed a sutureless Lichtenstein technique in 80 consecutive patients with primary unilateral inguinal hernia, to assess patient and trainee surgeon outcomes. Human fibrin glue was used in place of conventional sutures. Results: The mean operating time was 36 min and all patients were discharged 5–6 h after the operation. On a 100-point visual analogue scale, the surgeons rated the difficulty of the operation as low (mean score, 31), and perceived satisfaction as high (mean score, 84). No complications were observed at 12-month follow-up. Conclusion: This study confirms the efficacy of mesh fixation with human fibrin glue, and supports the viability of a sutureless Lichtenstein procedure.     

神经化组织工程骨构建的初步观察

目的评估两种组织工程骨体内神经化重建方法的成骨效果,研究神经化与成骨的相互关系。方法26只新西兰大白兔,其中24只随机分成四组:组织工程骨组(A组),感觉神经束植入组(B组),运动神经束植入组(C组),血管束植入组(D组);另2只为空白对照组。每只动物均制备左侧股骨长1.5cm的段缺性骨与骨膜缺损,钢板固定后骨缺损处分别植入用四种方法制备的组织工程骨。植入的神经分别是隐神经和股神经肌支。术后4、8、12周摄股骨正位X线片,用放射影像学评分和X线阻射影分析比较骨缺损修复情况。结果在组织工程骨中植入感觉神经束后,比单纯组织工程骨和运动神经束植入的修复效果均有明显提高,而在组织工程骨中植入运动神经束与单纯组织工程骨修复骨缺损的效果相比较无明显差异,感觉神经束植入与血管束植入的成骨效果比较无明显差异,血管束植入组的成骨效果优于其它两组。结论利用感觉神经束植入的方法可以提高组织工程骨的成骨作用,而植入运动神经束却无此作用。     

Composite prostheses for the repair of abdominal wall defects: effect of the structure of the adhesion barrier component

The component of a composite prosthesis, which makes contact with the visceral peritoneum, can be reabsorbable or non-reabsorbable, and laminar or reticular. This study was designed to determine whether the composition of this second, barrier component could improve its behavior at this interface. Abdominal wall defects in rabbits were repaired using a polypropylene prosthesis (PP), or the composites Sepramesh (PP+h) or Vicryl (PP+v). Fourteen days after surgery, the implants were evaluated by light and scanning electron microscopy, and immunohistochemistry. Prosthetic areas occupied by adhesions (PP: 71.08±5.09, PP+h: 18.55±4.96, P+v: 69.69±16.81%), neoperitoneal thickness (PP: 256.17±21.68, PP+h: 83.11±19.63, PP+v:213.72±35.90 μm) and macrophage counts (PP: 8.73±1.16, PP+h: 27.33±4.13, PP+v: 31.24±3.08%) showed significant differences (P<0.05). The tested biomaterials induced an optimal recipient tissue infiltration. Least adhesion formation was observed on the PP+h implants. This suggests that the second component, although reabsorbable, should be smooth in structure.