干燥综合征患者的泪腺及血浆中的白介素2、白介素6及其受体的研究

为进一步了解干燥综合征的病因,作者用ELISA法检测了干燥综合征患者的泪腺和血中的白介素2(IL-2),白介素2受体(IL-2R),白介素6(IL-6),白介素6受体(IL-6R),并与正常人相比较.结果:干燥综合征患者泪腺中的IL-2,IL-2R,IL-6R的含量比正常人明显升高,其血中的IL-2,IL-2R有改变.以上显示,干燥综合征患者泪腺中的白介素升高及血中的白介素的改变与该病的免疫性炎症反应有关.     

伤寒杆菌耐药质粒pRST98与细菌在巨噬细胞内存活关系的研究

目的　研究伤寒杆菌的不相容性C群接合性耐药质粒 pRST98对其宿主菌在巨噬细胞内存活的影响。方法　用标准系列稀释法检测 3株同源染色体伤寒杆菌———含 pRST98的野生型伤寒菌株STpRST98、经SDS人工消除pRST98的突变体菌株ST(R-)及 pRST98重新导入突变体的接合子 pRST98/ST(R-) ,研究它们在BALB/c小鼠腹腔巨噬细胞M J774A .1内的存活情况。结果　巨噬细胞吞噬后 6 0min内大多数待检菌被杀死 ,但 pRST98宿主菌在巨噬细胞内的活菌数明显高于无此质粒的菌株 (P <0 .0 5 )。结论　pRST98能提高其宿主菌在巨噬细胞内的存活能力。     

常年性变应性鼻炎sIL-2R的表达

目的探讨常年性变应性鼻炎(PAR)患者中可溶性白介素-2受体(sIL-2R)的表达水平.方法选择确诊为PAR者47例为PAR组,正常体检者36例为对照组.应用单抗、多抗双抗体夹心法检测sIL-2R的表达水平.结果PAR组患者的血清sIL-2R水平呈高表达,较正常人群组显著性升高(P＜0.001),且无男女性W别差异.结论血清sIL-2R在PAR的免疫病理过程中有重要的作用.     

深呼吸时P—R间期,P—P间期变化的临床意义

目的：通过深呼吸心电图试验,探讨观察心脏自主神经功能的无创性方法。方法：１０９名健康成人,描记１２导联心电图,在Ⅱ导联上分别描记平卧平静呼吸、深呼吸时心电图。分析Ｐ－Ｒ间期、Ｐ－Ｐ间期的变化。结果：深吸气时Ｐ－Ｒ间期、Ｐ－Ｐ间期均较平静呼吸缩短,深呼气时Ｐ－Ｒ间期、Ｐ－Ｐ间期均较平静呼吸时延长,均Ｐ〈０．０１。结论：呼吸时Ｐ－Ｒ间期、Ｐ－Ｐ间期的变化可为评价心脏自主神经功能提供参考依据。     

GnRHa对子宫肌瘤雌孕激素和表皮生长因子受体的影响

目的　探讨促性腺激素释放激素激动剂(GnRHa)对子宫肌瘤内雌、孕激素受体(ER、PR)、表皮生长因子受体(EGF-R)的影响。方法　测定13例子宫肌瘤患者经GnRHa治疗3月后肌瘤内雌、孕激素受体和EGF-R水平,并以28例未用药肌瘤作对照。结果　 GnRHa治疗组肌瘤内ER、PR、EGF-R水平明显低于对照组。结论　GnRHa除减少肌瘤内ER、PR外,使肌瘤内EGF-R的水平下降可能是GnRHa治疗子宫肌瘤的一个重要机制。     

Iodine-123-labelled fatty acids for myocardial single-photon emission tomography: current status and future perspectives

Renewed interest in the clinical use of iodine-123-labelled fatty acids is currently primarily focused on the use of iodine-123-labelled 15-(p-iodophenyl)pentadecanoic acid (IPPA) and modified fatty acid analogues such as 15-(p-iodophenyl)-3-R,S-methylpentadecanoic acid (BMIPP) which show delayed myocardial clearance, thus permitting single-photon emission tomographic imaging. Interest in the use of BMIPP and similar agents results from the differences which have often been observed in various types of heart disease between regional myocardial uptake patterns of [¹²³I]BMIPP and flow tracer distribution. Although the physiological basis is not completely understood, differences between regional fatty acid and flow tracer distribution may reflect alterations in important parameters of metabolism which can be useful for patient management or therapy planning. These tracers may also represent unique metabolic probes for correlation of energy substrate metabolism with regional myocardial viability. The two agents currently most widely used clinically are¹²³I-labelled IPPA and BMIPP. While [¹²³I]IPPA is commercially available as a radiopharmaceutical in Europe (Cygne) and Canada (Nordion), multicenter trials are in progress in the United States as a prelude to approval for broad use. [¹²³I]BMIPP was recently introduced as Cardiodine for commercial distribution in Japan (Nihon Medi-Physics, Inc.). [¹²³I]BMIPP is also being used in clinical studies on an institutional approval basis at several institutions in Europe and the United States. In this review, the development of a variety of radioiodinated fatty acids is discussed. The results of clinical trials with [¹²³I]IPPA and [¹²³I]BMIPP are discussed in detail, as are the future prospects for fatty acid imaging.     

Cerebrospinal fluid as a tool in the diagnosis of neurometabolic diseases: amino acid analysis before and after acid hydrolysis

We perform systematically amino acid analysis of the CSF before and after strong acid hydrolysis in children with unexplained neurological disease. By comparing the amino acid pattern before and after hydrolysis, defects can be traced in the metabolism not only of amino acids but also of purines, peptides, N-acetylated amino acids and peptides, and probably other compounds. This method has yielded important information such as the identification of two new diseases, GABA transaminase deficiency and adenylosuccinase deficiency, and the discovery of a peculiar, acid-labile double peak in the CSF of patients with the transient neonatal hyperammonaemia syndrome and with urea cycle defects. This substance was subsequently identified by others as -glutamylglutamine. As a consequence, we strongly recommend incorporating of this approach in the investigation of all children with unclear neurological disease.     

反复呼吸道感染患儿口含干扰素片后T细胞亚群与sIL-2R的变化

目的：了解口含干扰素片治疗儿童反复呼吸道感染（ＲＲＩ）的效果。方法：检测了口含干扰素和常规治疗组ＲＲＩ患儿在治疗前后Ｔ淋巴细胞亚群和血清ｓＩＬ２Ｒ水平,并与正常健康儿童对照。结果：口含干扰素片治疗后患儿ＣＤ３、ＣＤ４、ＣＤ４／ＣＤ８均显著升高,ＣＤ８水平和血清ｓＩＬ２Ｒ水平显著降低,ＣＤ４、ＣＤ８、ｓＩＬ２Ｒ水平与正常对照组相比均无明显差异,经常规治疗的患儿仅ＣＤ４、ＣＤ４／ＣＤ８显著升高,ＣＤ３、ＣＤ８水平和血清ｓＩＬ２Ｒ水平在治疗前后均无显著差异,与正常对照组相比,除ＣＤ４外其余各项指标均差异显著,且口含干扰素片治疗后患儿ＣＤ３、ＣＤ４／ＣＤ８显著高于常规治疗的患儿（Ｐ＜０．００１）,而ＣＤ８、ｓＩＬ２Ｒ水平则显著低于常规治疗组（Ｐ＜０．００１）。结论：口含干扰素片治疗后患儿的细胞免疫状态优于常规治疗的患儿。     

Exercise and heart disease. Epidemiology of the "exercise hypothesis"

The "exercise hypothesis" states that exercise protects against coronary heart disease. Reviewed herein is the epidemiologic evidence for and against the "exercise hypothesis." The weight of evidence supports the view that exercisers have a lower risk of coronary disease, but that vigorous exercise cannot always prevent progression of coronary atherosclerosis and does increase the risk of sudden death in persons with advanced coronary atherosclerosis. It is concluded that the "exercise hypothesis" is plausible, even likely, but still unproved.     

The sunflower syndrome. A new look at "self-induced" photosensitive epilepsy

The stereotyped, episodic abnormal behaviour manifested by a child and her mother on exposure to a particular sort of sunlight is described in detail. The child is the first fully documented patient with this so-called "self-induced" form of photosensitive epilepsy in whom for several years no electroencephalographic sensitivity to flickering light could be demonstrated. The probability that the cingulate circuit may be the anatomical substrate involved in the pathogenesis of these patients' unusual response to sunlight is discussed. Both patients also exhibited remarkably persistent habit rhythmias--the one common to both being that of circling.