刺五加对豚鼠地高辛中毒的影响

豚鼠灌服地高辛复制地高辛中毒模型，研究五加对地高辛中毒的影响。结果发现，服刺五加组豚鼠发生心律失常较未给药组明显推迟，而血中地高辛浓度则显著高于未给药组，提未临床应用地高辛时同时给予刺五加有于减少减轻地高辛的毒性反应。     

Studies an morphological typing of argyrophilic nucleolar organizer regions

Morphological typing of argyrophilic nucleolar organizer regions (AgNOR) in 300 caws of malignant tumors and 140 cams of benign lesions was analyzed and five morphological types of ApNOR were described in detail. In malignant tumors, the diffuse type (78%) was the most frequently seen, and in benign lesions, the nucleolar type (92.85%); the difference was thus highly significant (P < 0.001). The intranucleolar and aggregate types were not observed in benign lesions. There was no obvious difference in the proportion of the mixed type in benign and malignant lesions (P > 0.05). The relationship between grade of malignancy and morphological typing of AgNOR and its clinical significance are discussed.     

小脑和脑干梗塞致突发性耳聋

目的:了解小脑和脑干梗塞引起的突发性耳聋的临床特点.探讨其发病机制.方法:回顾性分析12例小脑和脑干梗塞所致突发性耳聋的临床资料.结果:该组患者主要临床表现为耳聋、眩晕、耳鸣、眼震、同侧颜面麻木感.头颅CT或MRI发现小脑或脑干有小于2 cm的梗塞灶.结论:发病机制主要为小脑前下动脉(AlCA)供血不足使小脑脑桥角或脑干缺血,损伤该区域的耳蜗神经和听神经传导通路,导致耳聋.小脑和脑干梗塞的诊断主要依据临床表现、CT或MRI检查.     

不同地区妇女产褥期卫生行为研究

目的 了解江苏、陕西和贵州三省妇女产褥期卫生行为和保健的一般情况;比较 不同地区间产褥期各种卫生行为的发生率;了解影响产褥期卫生行为的相关因素。方法 用问卷调查的形式对三者１２个县的２３５２例２岁以下儿童母亲进行入户访问。结果 江苏、陕西、贵州三者产褥期各卫生行为的发和衣次为：洗头２６．４％,３８．８％,１９．８％, 下身（指外阴部,下同）８３．３％,２６．９％,６４．０％,正常活动７６．９％,７     

应用酵母双向杂交系统筛选和鉴定P75NGFR作用的蛋白

目的：探讨Ｐ７５ＮＧＦＲ介导神经细胞凋亡的分子机制。方法;以转染了Ｐ７５ＮＧＦＲ的大鼠小脑神经细胞株Ｒ２Ｌ２为细胞模型,应用酵母双向杂交系统（ｔｗｏ－ｈｙｂｒｉｄ ｓｙｓｔｅｍ）筛选和鉴定Ｐ７５ＮＧＦＲ胞内区Ｐ７５ＩＣＤ作用的蛋白。结果：和Ｐ７５ＮＧＦＲ作用的蛋白由一个６００ｂｐ大小的ＣＤＮＡ片段编码。结论：该工作将有助于探讨Ｐ７５ＮＧＦＲ介导细胞凋亡的分子机制和信号,为勃勃系统退行性病变的病因、     

Relation between indicators for quality of occupational rehabilitation of employees with low back pain

OBJECTIVES: To assess if the implementation of guidelines for occupational rehabilitation of patients with low back pain by means of process variables--a set of objective criteria for technical performance and continuity of care--led to a better outcome in clinical and return to work variables. METHODS: The study group consisted of 59 patients with at least 10 days of sick leave because of low back pain. Univariate analyses as well as multiple logistic regression and Cox's regression analyses were performed to assess the relation between quality of care and outcome. RESULTS: Process indicators for technical competence, continuity of care, and total performance were all significantly related to satisfaction of employees. Continuity of care and total performance were significantly related to working status at 3 months, and time to return to work. None of the process indicators was related to pain or disability after 3 months follow up. Satisfaction was not related to any of the other outcome variables. This indicates that if guidelines for occupational rehabilitation are met, outcome is better. CONCLUSION: Quality of the process of care was related to outcome. Interventions of occupational physicians need improvement in the areas of continuity of care and communication with treating physicians. The effectiveness of an improved intervention should be studied in a subsequent randomised clinical trial.

 

     

大鼠局灶性脑缺血模型及其与C反应蛋白变化的关系

目的 改进大鼠大脑中动脉梗塞法,建立更接近于临床缺血性脑卒中及其再扩灌注的可靠模型,并观察其与血甭Ｃ反应蛋白变化的。方法沿大鼠右颈内动脉插入长２．１￣２．３ｃｍ直径０．２０５ｍｍ的单股尼龙丝,直达大脑中动脉起始部开口,阻断其血流,观察大鼠神经病学改变及脑组织形态学变化,并测定血清Ｃ反应蛋白含量。结果 术后大鼠表现特殊体态及典型追尾征,６ｈ大脑中动脉供血区出现缺血性外观（ＴＴＣ染色）及相应组织学变化     

Computerized analysis of lesions in US images of the breast

RATIONALE AND OBJECTIVES: Breast sonography is not routinely used to distinguish benign from malignant solid masses because of considerable overlap in their sonographic appearances. The purpose of this study was to investigate the computerized analyses of breast lesions in ultrasonographic (US) images in order to ultimately aid in the task of discriminating between malignant and benign lesions. MATERIALS AND METHODS: Features related to lesion margin, shape, homogeneity (texture), and posterior acoustic attenuation pattern in US images of the breast were extracted and calculated. The study database contained 184 digitized US images from 58 patients with 78 lesions. Benign lesions were confirmed at biopsy or cyst aspiration or with image interpretation alone; malignant lesions were confirmed at biopsy. Performance of the various individual features and output from linear discriminant analysis in distinguishing benign from malignant lesions was studied by using receiver operating characteristic (ROC) analysis. RESULTS: At ROC analysis, the feature characterizing the margin yielded Az values (area under the ROC curve) of 0.85 and 0.75 in distinguishing between benign and malignant lesions for the entire database and for an "equivocal" database, respectively. The equivocal database contained lesions that had been proved to be benign or malignant at cyst aspiration or biopsy. Linear discriminant analysis round-robin runs yielded Az values of 0.94 and 0.87 in distinguishing benign from malignant lesions for the entire database and for the equivocal database, respectively. CONCLUSION: Computerized analysis of US images has the potential to increase the specificity of breast sonography.