白首乌抗臭氧损伤的组织学及超微结构观察(摘要)

本文报告了小鼠吸入臭氧所造成的肺、肝和免疫器官胸腺、脾脏损伤的组织学和超微结构变化,探讨O_3损伤及白首乌抗O_3损伤对机体的保护作用。实验小鼠分正常对照、O_3损伤、白首乌三组。白首乌组预先每天喂白首乌粉60mg,12天后与O_3组同时放入O_3柜内(浓度为0.9ppm),同时继续喂药。再12天后,三组同时处死,取肺、肝、脾、胸腺等脏器制石蜡切片、HE染色、光镜观察。肺和胸腺超薄切片,透射电镜观察。     

锰、铁、锌、铜4种微量元素对芍药生长和芍药苷含量的影响

目的:研究锰、铁、锌、铜4种元素对二、三年生芍药生长的影响.方法:采用完全随机区组,测定施用各微量元素后芍药产量等生理指标和质量指标芍药苷的变化,并用原子吸收分光光度法测定各元素在芍药根、茎、叶及土壤中的含量.结果与结论:锰、铁、锌、铜在一定水平下能显著促进芍药的生长并能提高根中芍药苷的含量,但施用过多会产生生长抑制,除锌外其他元素均不在根中积累.     

钛板颅骨成形的后期并发症

自1977年到1988年,我院应用钛板(合金)行颅骨成形术120例。至今观察时间5～16年,现就其后期并发症报告如下。 1 一般资料 本组出现的后期并发症有12例,占总数的10％,其中男10例;女2例,年龄最小17岁,最大58岁,平均40.4岁。颅骨缺损最小4cm×4cm,最大10cm×12cm,一般为6cm×7cm。12例中发生血肿者2例,占1.7%,1例发生在术后第8天,另一例发生在术后2个月,均为突然出现的急性血肿。发     

Soave＇s改良式在小儿肛肠外科中的应用（附93例报告）

1987-1995年应用Soave手术治疗各种小儿结直肠疾病93例，随访1-8年远期疗效良好，无一例复发，无污粪及肛门失禁，对其治疗方法及效果进行讨论，认为Soave手术在小儿结直肠疾病中具有手术方便，损伤小、治疗效果明显的优点。     

益母草防治初发期急性肾小管坏死的实验研究

ＳＤ成年雄性大鼠，禁止１６小时，肌注甘油引起急性肾小管坏死（ＡＴＮ），于其初发期给予不同药液，观察到益母草组３、２４及４８小时Ｂｃｒ升高值，２４及４８小时ＢＵＮ升高值均明显低于自来水组和单纯禁水组，而与校正对照异搏停组近似，肾组织损伤程度亦明显减轻。结果表明，益母草对初发期急性肾小管坏死（ＩＡＴＮ）有一定的防治作用。     

Effect of autocontrol micromotion intramedullary interlocking nail on fracture healing： an experimental study

Objective: To investigate the effect of autocontrol micromotion locking nail ( AMLN ) on experimental fracture healing and its mechanism. Methods: 16 goats undergoing both sides of transverse osteotomy of the femoral shafts were fixed intramedullary with AMLN and Gross-Kempf (GK) nail, respectively. The follow-up time was 7, 14, 28 and 56 days. Roentgenographic, biomechanical, histological, scanning electromicroscopic and biochemical analyses were done. Results: (1) The strength of anticompression, antiflexion and antitorsion in the fractural end in the AMLN-fixed group was higher than that of GK nail-fixed group; whereas, the rate of stress shelter in the fractured end decreased significantly (P<0.01). (2) The content of the total collagen, insoluble collagen, calcium and phosphate in the AMLN-fixed group was higher than that in the GK nail-fixed group (P<0.05). (3) Histological observation and quantitative analysis of calluses revealed that AMLN could promote the growth of bridge calluses and periosteum calluses. Hence the facture healing and remolding process achieved early, which was much better than traditional GK nail fixation. (P<0.05). (4) 7-14 days postoperation, the calluses of AMLN-fixed group was flourish and camellarly arranged and the collagen fibril formed constantly in the absorption lacuna of bone trabecula. 28-56 days postoperation, the collagen fibril was flourish around the absorption lacuna and was parallel to the bone's longitudinal axis. Active bony absorption and formation were seen, so was remolding and rebuilding. Haversian system was intact and the bony structural net was very tenacious because of the deposition of calcium salt. None of the above findings was observed in the GK nailfixed group. Conclusions: The design of AMLN accords well with the plastic fixation theory. As the geometry ametabolic system constituted by the intramedullary fixation instruments and the proximal and distal end of the fracture is very firm and stable, the disturbance to the physical stress distributed in the fractural end is light. The generation and conduct of the intermittent physical stress between the fractural parts could reach the balance between stress conduct and stress protection. The feature that the healing and remolding take place at the same time speeds up the fractural healing process.