金黄色葡萄球菌D型肠毒素抗血清的制备和致敏血球效果的初步观察

我们制定了制备抗-SED血清的免疫方案,抗原用量6.9mg/兔,注射8针,免疫时间共14周。实验表明,抗-SED血清效价可达1∶128,所制备的抗血清与纯度高(98%)及纯度较低(50%～60%)的SED肠毒素都只产生1条沉淀线,并且融合,同SEA、SEB、SEC_I、SEC_Z均没有交叉反应。硫铵盐析沉淀法提取的抗-SED IgG,用于致敏醛化血球,该抗体诊断致敏血球检出SED灵敏度较高,约1ng/ml。同时用该抗体诊断血球对6种罐头食品人工污染SED肠毒素进行了检验,检出灵敏度为0.78～3.12ng/ml,略低于含纯SED标本,食物成分对反向间接血凝没影响,不出现假阳性和假阴性。效价高或效价低的抗-SED血清都可用于致敏醛化血球。     

Point mutation in the parkin gene on patients with Parkinson’s disease

Summary To investigate the distribution of possible novel mutations from parkin gene in variant subset of patients with Parkinson’s disease (PD) in China and explore whether parkin gene plays an important role in the pathogenesis of PD, 70 patients were divided into early-onset group and late-onset group; 70 healthy subjects were included as controls. Genomic DNA from 70 normal controls and from those of PD patients were extracted from peripheral blood leukocytes by using standard procedures. Mutations of parkin gene (exon 1–12) in all the subjects were screened by PCR-single strand conformation polymorphism (SSCP), and further sequencing was performed in the samples with abnormal SSCP results, in order to confirm the mutation and its location. A new missense mutation Gly284Arg in a patient and 3 abnormal bands in SSCP electrophoresis from samples of another 3 patients were found. All the DNA variants were sourced from the samples of the patients with early-onset PD. It was concluded that Parkin point mutation also partially contributes to the development of early-onset Parkinson’s disease in Chinese. WANG Tao, male, born in 1961, Associate Professor This work was supported by grants from the key program of the special scientific project of Scientific & Technologic Agency of Hubei Province (Serial No. 2001AA308B01) and the Hygienic Research Project of Hygienic Agency of Hubei province (Serial No. WJ 01529).     

止血灵滴剂治疗鼻出血的疗效观察

止血灵(暂定名)是由尖吻腹蛇(Deina Agkistrodon acutus)蛇毒分离提取得到的一种类凝血酶组分,具有明显的促凝(止血)作用,我科自1992年10月～1993年10月使用广州蛇毒研究所与广州医学院血液学研究     

晚发与非晚发性精神分裂症患者临床资料对照分析

目的：探讨晚发性精神分裂症的临床特点。方法：查找近15年来45岁以后发病的精神分裂症患的临床资料40份，随机抽取同期住院小于45岁又大于18岁发病的精神分裂症患的临床资料67份，就有关临床资料进行比较分析。结果：晚发性精神分裂症的临床症状以妄想、幻觉为主，伴有被动体检和活动减少；临床用药剂量偏低，单一用药多，临床疗效好。结论：晚发性精神分裂症可以作为一个独立的亚型，对临床治疗具有一定的指导意义。     

登革病毒感染后小鼠细胞免疫功能的动态变化

从登革Ⅱ型病毒感染成年ＢＡＬＢ／ｃ小鼠为模型，观察感染后不同时间机体细胞免疫反应的变化。结果表明：感染后７－１４ｄ免疫功能处于激活状态，表现为腹腔巨噬细胞的吞噬功能和脾淋巴细胞对ＣｏｎＡ的反应及ＩＬ－２产生水平都明显高于对照组，感染２１ｄ后免疫功能则转为抑制状态，上棕免疫反应明显低于对照组，脾中的Ｌ３Ｔ４＾＋细胞亚群的百分比逐渐下降；相反，ＬＹＴ２＾＋细胞亚群的百分比逐渐升高，这种抑制现象可维持到     

Objectively measuring physical ability in elderly persons: the Physical Capacity Evaluation.

The Physical Capacity Evaluation, a performance measure of functional capabilities comprised of 13 tasks simulating those used in activities of daily living, was tested on 289 community-dwelling elderly people and compared against a widely used self-report measure of function, the Health Assessment Questionnaire. Factor analysis identified one dominant component in each instrument. Internal consistency reliability (Cronbach's alpha) was .90 for both instruments. Global disability (Health Assessment Questionnaire) and function (Physical Capacity Evaluation) scores were correlated -.74. One-week retest reliabilities on 58 subjects were .94 for the Physical Capacity Evaluation and .95 for the Health Assessment Questionnaire. The Physical Capacity Evaluation is a valid and reliable measure of physical performance for use with elderly people.     

我省流通领域阿莫西林制剂质量现状

目的:了解流通领域中阿莫西林制剂的质量状况。方法:在全省各市县的部分医药经营企业,抽取阿莫西林胶囊及干糖浆共54批样品,按国家药品标准进行全检后,对其检验结果进行统计分析。结果:不合格的项目有含量、胶囊剂溶出度、干糖浆粒度。该药物制剂的标示百分含量普遍偏低。结论:影响该产品质量的主要项目是含量和溶出度,含量偏低的主要原因是厂家的低限投料,应予以充分重视。     

吸入一氧化氮对心瓣膜置换术后肺动脉高压患者血流动力学的影响

目的：观察吸入一氧化氮（ＮＯ）对心瓣膜置换术后肺动脉高压患者血流动力学的影响。方法：选择９例心瓣膜置换术后伴肺动脉高压的病人，吸入ＮＯ０．００３％，观察三个时象点：吸入ＮＯ前；开始吸入ＮＯ后１５分钟；停止吸入ＮＯ后１５分钟。结果：吸入ＮＯ能显著降低肺动脉压和肺循环阻力指数（Ｐ＜０．０１），停止吸入ＮＯ１５分钟后，肺动脉压和肺循环阻力指数恢复到原有水平。在整个观察过程中，心率、平均动脉压、中心静脉压、肺动脉楔压、体循环阻力指数和心脏指数均无显著变化（Ｐ＞０．０５）。结论：吸入ＮＯ具有选择性肺血管扩张作用，是治疗心瓣膜置换术后肺动脉高压的较理想药物。     

Gene expression of LDL receptor, HMG-CoA reductase, and cholesterol-7 alpha-hydroxylase in chronic renal failure

BACKGROUND: Chronic renal failure (CRF) is associated with an atherogenic lipid profile and an increased risk of ischaemic cardiovascular disease. The associated hyperlipidaemia is reportedly ameliorated by erythropoietin (Epo) therapy. According to a recent report, rats studied 3 weeks after 5/6 nephrectomy and fed a high- protein diet exhibited increased activities of hepatic HMG-CoA reductase (HMG-CoAR) and cholesterol 7 alpha-hydroxylase (Ch-7 alpha- H), despite normal corresponding mRNA values. DESIGN AND METHODS: This study was designed to examine the effects of naturally progressing CRF of longer duration as well as those of Epo therapy on gene expressions of the key factors involved in hepatic cholesterol metabolism, i.e., LDL receptor (LDLR), HMG-CoAR, and Ch-7 alpha-H. Sprague-Dawley rats were randomized to the CRF group (5/6 nephrectomy), Epo-treated CRF group (given Epo 150 U/kg/twice weekly) and sham-operated, placebo- treated normal controls. They were allowed free access to regular rat chow and studied 6 weeks after surgery. Liver mRNAs and protein mass or activities of the above factors were studied. RESULTS: Plasma cholesterol concentration was significantly increased in the CRF group (P < 0.001) and was modestly lowered (P < 0.05) by Epo therapy. However, microsomal cholesterol concentration and LDLR, HMG-CoAR, and Ch-7 alpha-H mRNA as well as HMG-CoAR activity, and Ch-7 alpha-H and LDLR protein mass measurements were virtually identical in the three groups. Thus, hepatic LDLR, HMG-CoAR, and Ch-7 alpha-H mRNA and protein measurements in rats with CRF were similar to those of the normal control group representing an inappropriate response to the associated hypercholesterolemia. Epo therapy led to partial amelioration of CRF- associated hypercholesterolaemia with no discernible effect on hepatic tissue expression of the above factors.      

磁共振尿路成像对泌尿系疾病的诊断价值

目的评价磁共振尿路成像(Magneticresonanceurography,MRU)对泌尿系疾病的诊断价值。方法对36例泌尿系疾病患者进行MRU检查,并结合临床手术、病理资料和其他影像学资料进行回顾性分析。结果36例患者中,均有MRU阳性结果,3例肾盂、肾盏癌,4例前列腺癌,8例前列腺增生症,2例输尿管癌定性、定位明确;9例肾盂、输尿管移行段梗阻定位明确,定性有帮助;10例输尿管下段梗阻中6例诊断明确,4例未能确诊。结论MRU在泌尿系疾病的诊断中,对肿瘤的定位、定性参考价值较高,对尿路梗阻定位诊断有价值,对定性诊断帮助有其局限性。