Endotoxin-induced uveitis (EIU) in the rat: A study of inflammatory and immunological mechanisms

Endotoxin-induced uveitis (EIU) can be produced by systemic injection of endotoxin (ET). It is not clear yet why exclusive ocular involvement occurs in this model. To clarify this question and to establish the sequence of inflammatory events, EIU was induced in Lewis rats by footpad injection of Salmonella ET. Ocular inflammatory response (anterior chamber cells and proteins), aqueous inflammation mediators (thromboxane B₂, prostaglandin E₂, leukotriene B₄ and substance P) and MHC class 2 (Ia) antigen expression in the ciliary body were monitored for 72 hours. Thromboxane B₂ was detected early in the aqueous humor, peaking already 1 hour after ET injection. Prostaglandin E₂ & leukotriene B₄ peaks and a second peak of thromboxane B₂ were recorded 18 hours after ET-injection, at the time of maximal ocular inflammation. MHC-class 2 expression was first detected in the ciliary body stroma at the vascular level 6 hours after ET injection and was massively expressed in the ciliary body epithelium at 18 and 72 hours. It is hypothetized that ciliary body endothelium is particularly sensitive to the effect of ET and is the site of thrombocyte adherence. Vascular damage leads in succession to cellular infiltration, release of inflammation mediators and disruption of blood-ocular barrier. MHC-class 2 expression is a secondary phenomenon and is probably at the origin of additional tissue damage from immune effector mechanisms.     

Hepatobiliary scintigraphy in a patient with bilhemia

A 4-year-old child referred for acute jaundice following percutaneous needle biopsy of the liver underwent hepatobiliary scintigraphy. Although all conventional liver tests suggested preservation of hepatocyte function, the tracer uptake in the liver appeared dramatically reduced at scintigraphy and the blood pool activity did not decrease significantly until the end of the study. Visualization of the bile ducts indicated, however, that the tracer was taken up by the hepatocyte and further excreted into the biliary tree. There was no tracer pooling in the biliary tree although no bowel activity was observed, even on delayed images. The association of persistent blood pool activity, bile duct visualization without tracer pooling, and nonvisualization of the bowel was caused by a continuous recirculation of the tracer from the biliary tree into the bloodstream. The presence of a biliovenous fistula was further proven by percutaneous transhepatic cholangiography performed 24 h later. Since 1975, only 16 cases of bilhemia have been reported. To the best of our knowledge the scintigraphic pattern of this rare but lifethreatening complication has not previously been reported.     

腰穿放液治疗160例外伤性蛛网膜下腔出血的体会

目的：探讨腰穿放液对外伤性蛛网膜下腔出血的作用。方法：对１６０名外伤性蛛网膜下腔出血的病人行腰穿放液，少则２次，多则７次。结果：所有病人症状均好转，从脑脊液的力学上看脑脊液恢复正常性状的时间缩短，结论：腰穿放液治疗外伤性蛛网膜下腔出血是十分有效的方法，近期内临床症状明显改善，远期并发症减少。     

眼外伤临床统计规范探讨

眼外伤是我国眼科住院三大主要疾病之一，占眼科住院病人总数的１６￣３２％。每年发表临床统计文章百余篇，但由于统计资料不全面，标准不统一，降低了这部分劳动的价值。本文就眼外伤临床统计规范及某些问题进行讨论，强调规范化的重要意义。     

37例创伤死亡病例分析

本文对住院因外伤致死者进行了一般分析，说明创伤造成死亡占总死亡人数之６３。７％，而其中６５％均为青壮年和中年，并着重对颅脑损伤的死亡情况加以分析，提出对特重型颅脑外伤当非手术疗法无效时，应行手术探查减压，另外对腹部挫伤和烧伤及开放性骨折引起死亡的病例进行了讨论。     

Clinical diagnosis of trauma from occlusion and its relation with severity of periodontitis

The purpose of the present study was to determine the reliability of several selected signs of trauma from occlusion and their relations with severity of periodontitis. 32 moderate to advanced chronic periodontitis patients participated in the study. All teeth present were evaluated for various abnormal occlusal contacts, signs of trauma from occlusion, and the severity of periodontitis. Standardized periapical radiographs were also taken for each tooth. The results demonstrated that: (1) no significant difference occurred in probing pocket depth (PD), clinical attachment loss (AL), or percentage of alveolar bone height (BH) between teeth with and without various abnormal occlusal contacts, i.e., premature contacts in centric relation occlusion, non-working contacts in lateral excursions, premature contacts of anterior teeth or posterior protrusive tooth contacts; (2) teeth with either significant mobility, functional mobility, or radiographically widened periodontal ligament space (PDLS) had deeper PD, more AL and lower BH than teeth without these signs, while teeth with pronounced wear or radiographically thickened lamina dura had less AL than teeth without these findings; (3) 2 combined indices, i.e., the trauma from occlusion index (TOI) and the adaptability index (AI), were proposed for the identification of occlusal trauma and the response of periodontium to excessive biting forces in heavy function, respectively; TOI-positive teeth exhibit deeper PD, more AL and less osseous support than TOI-negative teeth; however, AI-positive teeth had less AL and more osseous support than AI-negative teeth; (4) with identical attachment level, TOI-positive teeth had less osseous support than TOI-negative teeth while the magnitude of difference became greater with an increase of attachment loss.     

羟基磷灰石义眼台暴露的处理和预防

目的：修复较大范围的羟基磷灰石义眼台暴露。方法：将异体巩膜覆盖于义眼台表面，然后严密缝合球筋膜与球结膜，共治疗20例患者。结果：19例修复成功，1例未成功而取出义眼台。结论：应用异体巩膜修复义眼台暴露是有效的。     

Komplexverletzungen des Fußes

Complex injuries of the foot are often overlooked, especially in the multiple injured patient, and they then lead to major loss of function. When the mechanism of injury suggests involvement of the foot, a clinical examination of the lower extremities should be included in the primary diagnostic procedures implemented in the multiply injured patient, followed by radiological examination once the patient's condition is stable. The condition of the soft tissues is of decisive importance in the prognosis of complex foot injuries, regardless of whether the damage to the foot is one component of a polytrauma or an isolated injury, which can also be life threatening. The diagnostic examinations selected should be adapted to the severity of the injuries in the particular multiply injured patient. Successful therapy involves stable internal fixation of injuries to bones and joints, though the external fixation options should be considered in the first instance, and carefully selected methods of temporary and definitive soft tissue reconstruction. The aim of treatment is the best possible reconstruction of the foot as a functional weight-bearing unit with intact soft tissue cover and a natural form. Good results can be achieved when there is close interdisciplinary cooperation between trauma (orthopedic) and plastic surgeons. Patient with severe injuries of this kind should be transferred to a trauma center as the first step toward this end.