Ultrastructure of Amelanotic Melanocytes from Human Hair Follicles

To investigate the ultra structure of amelanotic melanocytes （AMMC）. Methods： The hair follicles obtained from normal human scalp by 0.50% collagenase type V treatment were washed with 0.1 mol/L phosphate buffer salt （PBS）. Hair-follicle cell suspensions were prepared by trypsin treatment and cultured in melanocyte medium. Remaining keratinocytes were removed by differential trypsinization. 100μg/ml geneticin was used to eliminate the contaminating fibroblasts. At third passage, the cells were trypsinized, and then washed in phosphate-buffered saline and processed for transmission electron microscopy. Results： Under transmission electron microscope, the cultured cells showed round or oval shape, with single large nuclear and the karyotheca were double deck. There were obvious euchromosome within the nucleus, and sparse heterochromosome. There were various organelles in the cytoplasm, including plentiful melanosomes with nearly similar size, mitochondria, rough endoplasmic reticule （RER） and ribosome. The electron density granules in most of the melanosomes disposed along concentric circularities. Golgi apparatus in the cells was inconspicuous. Conclusion： The ultra structure of AMMC from human hair follicles is different from that of epidermal melanocytes, and these characteristics determine the functional immature of AMMC.     

胃鳞癌和腺棘癌的临床病理和电镜观察

通过临床病理和电镜观察,对胃鳞癌和腺棘癌的临床特征、病理形态和组织起源、诊断标准进行了探讨。组织病理学研究表明,胃鳞癌可能来自鳞状上皮化生,而腺棘癌则可能起源于腺癌组织的恶性鳞化。对于确诊单纯型(鳞癌)或混合型(腺棘癌)肿瘤,电镜观察可提供重要依据。     

显微镜下不同手术入路手术治疗高血压基底节区脑出血的临床对比研究

目的 观察显微镜下经侧裂入路与经颞叶皮层入路治疗60例高血压基底节区脑出血的临床效果.方法 回顾分析我院神经外科2010年1月～2011年1月行显微镜下经侧裂-岛叶入路治疗高血压基底节区脑出血患者60例,随即分为两组（A、B两组）,A组采用显微镜下经侧裂入路开颅血肿清除术、B组采用显微镜下经颞中回入路开颅血肿清除术.随访半年至1年,观察其格拉斯哥预后分级（GOS）.结果 A组患者中生存30例、死亡（GOS分级Ⅰ级）0例、植物生存（GOS分级Ⅱ级）3例、重残（GOS分级Ⅲ级）3例、中残（GOS分级Ⅳ级）15例、良好（GOS分级Ⅴ级）9例;B组患者中生存29例、死亡（GOS分级Ⅰ级）1例、植物生存（GOS分级Ⅱ级）3例、重残（GOS分级Ⅲ级）3例、中残（GOS分级Ⅳ级）20例、良好（GOS分级Ⅴ级）3例.结论 显微镜下经侧裂入路治疗高血压基底节区脑出血的临床效果可靠,手术创伤小,清除血肿彻底,是高血压基底节区脑出血首先手术方式.     

Method for Manufacturing Corn Straw Cement-Based Composite and Its Physical Properties

This paper introduces an innovative method for making cement-based composites from corn straw plants, and investigates the strength, thermal conductivity, and hydration characteristics of the composites. Corn straw is a natural, renewable, and breathable thermal insulation composite that contains cellular sealed pores. Corn straw contains a large amount of soluble cellulosic sugar, which hinders the hydration reaction of Portland cement and affects the use of corn straw as a building material. In this study, a 3 wt.% siliceous solution was used for surface treatment of corn straw particles to prevent cellulosic sugar from affecting the hydration performance of Portland cement. The composition of added cement-based composite materials with treated corn straw at the dosage of 11–20 wt.% was investigated. The test results showed that the corn straw cement-based composite (CSCC) had an optimal thermal conductivity of 0.102–0.112 (W/(m·K)) and a minimum compressive strength of above 1 MPa. The hydration performance of four typical CSCCs was examined using XRD, SEM, and EDS. The experimental results of this study may help to increase the comprehensive utilization of corn straw. The manufacturing method of the composite materials is simple, effective, and convenient for popularization and application, and it provides a new important technical measure to solve the problem of high energy consumption in rural houses.     

白鹃梅花蕾及嫩叶显微鉴别

目的 研究白鹃梅花蕾及嫩叶的显微特征,为其生药学鉴别提供依据.方法 采用性状鉴别、显微鉴别方法.结果 白鹃梅食用部位具有独特的性状,其叶、花及花的粉末具有独特的显微特征.结论 白鹃梅花蕾及嫩叶的显微鉴别为其开发利用提供了一项技术参考.     

肝移植术后胆管铸型的电镜观察

目的 探讨肝移植术后胆管铸型的超微结构及其与胆道感染的关系.方法 手术过程中,无菌条件下收集11例肝移植术后患者的胆管铸型,留取标本.从留取的标本中随机抽取6例进行扫描电镜观察.结果 6例铸型表现为多种形态,在铸型中均未观察到有细菌或细菌残骸存在.结论 铸型中没有找到细菌的踪迹,胆管炎症可能不是其病因之一.     

中毒性肝炎与电镜下的浆细胞系列

本文用电镜观察了四氯化碳引起的Wistar大鼠中毒性肝炎的组织学表现。我们发现,在肝血窦或炎症坏死区,存在着典型的成熟的浆细胞以及具形态特征的四型浆母细胞。由于四氯化碳对肝脏具有明确的直接损伤作用.作者推测体液免疫是中毒性肝炎的结果而非原因。     

复方三七成分对恒河猴子宫内膜炎症超微结构的影响

目的探讨复方三七成分对恒河猴子宫内膜炎症所致异常出血，子宫内膜超微结构的影响。方法建立恒河猴（Rhesus猴）子宫内膜炎动物模型，治疗组以复方三七成分灌胃治疗，模型组及空白对照组给予等量生理盐水，3个疗程后，在预测下一次月经来潮前1d切取3组猴的子宫内膜，固定后置电镜下观察。结果电镜下空白组见子宫内膜为正常分泌晚期图像；模型组间质内可见大量炎性细胞浸润，螺旋动脉扩张，内皮细胞线粒体广泛空泡样变；治疗组间质细胞有少量炎性细胞，螺旋动脉部分内皮细胞线粒体有空泡样变。结论复方三七成分可以促进螺旋动脉内皮细胞和平滑肌细胞的修复从而达到止血的作用。     

普通解剖钢板和锁定钢板治疗复杂性胫骨平台骨折疗效对比

目的 探讨采用普通解剖钢板和锁定钢板治疗复杂性胫骨平台骨折的临床疗效.方法 回顾性分析2008年4月～2012年4月收治的50例复杂胫骨平台骨折手术患者的临床资料,其中采用锁定钢板治疗的22例患者作为观察组;采用普通解剖钢板内固定治疗的28例患者作为对照组.比较两组的手术时间、术中失血量、住院时间、骨折愈合时间、患肢完全负重时间、胫骨平台内翻角（TPA）和后倾角（PA）变化、膝关节功能HSS评分、优良率及术后并发症.结果 两组在手术时间、术中出血量、住院时间、骨折愈合时间和患肢完全负重方面比较差异无统计学意义（P＞0.05）;两组术后当天、3个月和12个月的TPA、PA比较差异无统计学意义（P＞0.05）;两组的膝关节功能HSS评分及优良率比较差异无统计学意义（P＞0.05）.结论 锁定钢板内固定与普通解剖钢板治疗复杂性胫骨平台骨折的临床疗效相近,临床中应根据患者实际情况选择恰当的方法.     

电镜观察透明质酸酶对人眼晶状体上皮细胞作用

目的：探讨透明质酸酶是否可以溶解晶状体囊膜上皮细胞及其作用机制。方法。取人眼超声乳化白内障摘除术中撕下的前囊膜,对半切开,一半立即置于37℃水浴箱中的2ml平衡液中。另一半置于37℃水浴箱中的2ml平衡液 1500IU透明质酸酶中。分别放置5、1O、15min,然后立即放入4％戊二醛中固定,送透射电镜检查。结果：置于平衡液中5、10、15min的前囊膜,囊膜表面的晶状体上皮细胞之间的细胞连接完整;而置于透明质酸酶中5,10、15min的前囊膜,其表面的晶状体上皮细胞之间以及细胞与囊膜之间的缝隙随时间延长而增大。结论:透明质酸酶可以破坏晶状体上皮细胞之间以及细胞与囊膜之间的连接,从而使晶状体囊膜上的上皮细胞易于被清除。