早期饮食干预对婴幼儿呼吸道变态反应疾病的影响

目的 观察早期饮食干预对婴幼儿呼吸道变态反应疾病发展的影响。方法 选取2003年1月-2004年6月复旦大学附属儿科医院0～6月变态反应疾病高危婴儿176例，在进行环境控制的前提下，随机分为干预组（饮食干预）和非干预组，随访两组患儿变态反应疾病发生、发展的情况。结果 （1）在干预6、12、18个月后，干预组发生两种以上变态反应疾病的人数均显著少于非干预组，过敏症状的严重程度较非干预组也显著减轻（P〈0．005）。（2）饮食干预18个月后，两组患儿在吸入性过敏原筛查阳性比例上的差异没有显著性（χ^2=0．002，P=0．969），但干预组患儿的肺功能显著优于非干预组（P〈0．005）、干预组的食物过敏原筛查阳性比例显著低于非干预组（χ^2=8．91，P〈0．01）。结论 对变态反应性疾病高危婴儿进行饮食干预，能减轻或消除呼吸道变态反应疾病症状，改善肺功能。     

Quantification of atherosclerotic plaque components using in vivo MRI and supervised classifiers.

In this work we aimed to study the possibility of using supervised classifiers to quantify the main components of carotid atherosclerotic plaque in vivo on the basis of multisequence MRI data. MRI data consisting of five MR weightings were obtained from 25 symptomatic subjects. Histological micrographs of endarterectomy specimens from the 25 carotids were used as a standard of reference for training and evaluation. The set of subjects was divided in a training set (12 subjects) and an evaluation set (13 subjects). Four different classifiers and two human MRI readers determined the percentages of calcified tissue, fibrous tissue, lipid core, and intraplaque hemorrhage on the subject level for all subjects in the evaluation set. Quantification of the relatively small amounts of calcium could not be done with statistical significance by either the classifiers or the MRI readers. For the other tissues a simple Bayesian classifier (Bayes) performed better than the other classifiers and the MRI readers. All classifiers performed better than the MRI readers in quantifying the sum of hemorrhage and lipid proportions. The MRI readers overestimated the hemorrhage proportions and tended to underestimate the lipid proportions. In conclusion, this pilot study demonstrates the benefits of algorithmic classifiers for quantifying plaque components.     

Clinical course and outcome of cycloid psychotic disorder: a three-year prospective study

The course and outcome of cycloid psychotic disorder was explored by means of a prospective three-year follow-up of a sample of patients fulfilling the diagnostic criteria for the disorder provided by Perris & Brockington, compared to patients with a diagnosis of affective or schizoaffective disorder. The most striking difference between cycloids and affectives was the lack of manic episodes during the follow-up period in the former group. Moreover, the mean age at onset was lower in cycloids. No difference between these patient groups was observed with regard to outcome. Compared to schizoaffectives, cycloids showed several differences in the clinical picture during the index episode, and their symptomatological pattern was more consistent from one episode to another during the follow-up. Moreover, the outcome of cycloids was significantly more favourable than that of schizodepres-sives.     

扩散－电极法测定食品中氟

样品中氟在扩散盒中与硫酸作用生成氟化氢，经扩散吸附在扩散盒的碱膜上。碱膜用缓冲液溶解后，氟化物含量由氟离子选择电极测定。用本法对菜花、菠菜、大米、鱼片干四种样品以及玉米氟样品的氟进行了精密度和准确度试验。相对标准偏差在５％以内，回收率为９０％～１０３％，最小检测量为０．２４μｇ。该法可直接测定含氟量在０．５～１００ｍｇ／ｋｇ（干重）的食品。     

关于卫生监督医疗纠纷类图书归类探析

指出第四版《中图法》中有关卫生监督、医疗事故、医疗纠纷等类目中存在的一些问题和不足,并提出具体改进措施和分类建议。     

A Bayesian approach to subvoxel tissue classification in NMR microscopic images of trabecular bone

NMR microscopy is currently being used as an investigational tool for the evaluation of micromorphometric parameters of trabecular bone as a possible means to assess its strength. Since, typically, the image voxel size is not significantly smaller than individual trabecular elements, partial volume blurring can be a major complication for accurate tissue classification. In this paper, a Bayesian segmentation technique is reported that achieves improved subvoxel tissue classification. Each voxel is subdivided either into eight subvoxels twice the original resolution, or up to four subvoxels along the transaxial direction and the subvoxels optimally classified as either bone or marrow. Based on a statistical model for partial volume blurring, the likelihood for the number of marrow subvoxels in each voxel can be computed on the basis of its measured signal. To resolve the ambiguity of the location of the marrow subvoxels, a Gibbs distribution is introduced to model the interaction between the subvoxels. Neighboring subvoxel pairs with the same tissue label are encouraged, and pairs with distinct labels are penalized. The segmentation is achieved by maximizing the a posteriori probability of the label image using the block ICM (iterative conditional mode) algorithm. The potential of the proposed technique is demonstrated in real and synthetic NMR microscopic images.     

乙二胺四乙酸铁钠强化酱油改善贫血效果观察

本研究比较了NaFeEDTA强化酱油、硫酸亚铁 (FeSO4)强化酱油对IDA改善效果。将 30 0名IDA学生分为对照组、NaFeEDTA强化酱油组Fe 5mg (人·日 )、FeSO4强化酱油组Fe5mg (人·日 ) ,比较新型铁强化剂 (NaFeEDTA)与传统铁剂 (FeSO4)对缺铁性贫血的改善作用。结果表明 ,对照组各项检验指标干预前后没有显著差异。其它各试验组呈现出较为一致的变化 ,表现为血红蛋白、血清铁、血清铁蛋白含量的显著性增加和原卟啉、总铁结合力、转铁蛋白的显著性下降。试验结果提示 ,乙二胺四乙酸铁钠与传统铁剂 (硫酸盐铁 )强化酱油均有改善学生贫血的作用 ,并且NaFeEDTA组的贫血改善率和Hb恢复水平优于FeSO4组。     

新疆哈萨克族常用食品对离体动物细胞染色体的损伤作用

本文报道以叙利亚地鼠胚胎(SHE)细胞和Wistar大鼠胚胎(WRE)细胞为靶细胞,运用体外姊妹染色单体交换试验、染色体畸变分析试验和微核试验检测哈萨克族(哈族)常用食品——烟熏肉和酸奶疙瘩对染色体的损伤作用。结果显示,烟熏肉和霉变酸奶疙瘩提取物均可明显增加SHE细胞姊妹染色单体交换频率和微核率,霉变酸奶疙瘩提取物亦可以使WRE细胞微核率显著升高(P<0.05);烟熏肉提取物还可明显诱导SHE细胞染色体畸变(P<0.05)。提示烟熏肉、霉变酸奶疙瘩中含有诱发动物细胞DNA损伤的致突变物质。     

应用单克隆抗体(MoAb)对白血病免疫分型的临床研究

报告了应用单克隆抗体对25例淋巴细胞白血病、5例慢性粒细胞白血病及15例急性非淋巴细胞白血病进行免疫分型并与AB分型作比较,结果提示免疫分型可以弥补FAB分型的不足,它有助于白血病临床诊断、鉴别诊断、指导治疗和判断预后。