一起人芽囊原虫病暴发流行的调查研究

江西省崇义县横水镇在 1996年 10月 2 5日至 11月 1日发生了 112 2例人芽囊原虫病 ,人群总发病率为2 .39%。为查明本次暴发流行的原因 ,1997年我们采用疫情资料回顾性调查和病原体实验研究的方法 ,证实本次暴发流行是通过污染的水而传播 ,同时与带虫者粪便中病原体的耐低渗性和居民饮用水的不良卫生习惯有关。     

AN OVERVIEW OF THERAPEUTIC APHERESIS

Haemapheresis, or more generally, apheresis is concerned with the separation and differential separation of blood. It differs from dialysis, in that the process of separation concentrates mainly on cells and high molecular weight proteins. Correspondingly different separation techniques are used. Though apheresis can be performed applying conventional off-line centrifugal techniques, it is generally associated with the use of on-line centrifugation in blood cell separators (nowadays prefered to be called blood separators), plasmapheresis systems or devices for the preparation of blood components serving autologous blood transfusion. Filtration through flat sheet membranes or hollow fiber membranes is also applied. The differential separation of cells or plasma is off-line and on-line, correlating with the different degrees of technical maturation of the secondary separation systems. These secondary techniques aim at a concentration of certain cell types (for instance of stem cells) or at the elimination of undesired cells such as T cells or erythrocytes from stem cell or bone marrow concentrates. In secondary plasma treatement, filtration or adsorption procedures compete with immunological techniques and magnetic binding or density centrifugation or combinations of several techniques.     

AN EVALUATION OF THE TECHNIQUES OF SACRO-ILIAC SCINTISCANNING

A standardized method of sacro-iliac scintiscanning utilizingtechnetium-99m methylene diphosphonic acid is described. A gooddiscrimination between patients with ankylosing spondylitisand controls was obtained by this method. In addition an inversecorrelation with the duration of symptoms was found. It is suggested that this method may be a useful adjunct inthe diagnosis of ankylosing spondylitis, particularly when radiologicalchanges in the sacro-iliac joints are absent or equivocal. Thetwo-hour period between injection of this radionuclide and scintiscanninghas advantages in the investigation of out-patients comparedwith other established methods requiring longer periods.     

肝毛细线虫感染动物模型的建立

[目的 ]建立肝毛细线虫的动物模型。 [方法 ]将肝毛细线虫的孕胚卵经口注入大鼠和家猫。 [结果 ]受感染的 16只大鼠中 ,2只未检出肝毛细线虫 ,其余 14只均检出肝毛细线虫 ,并有部分大鼠因肝毛细线虫病而死亡。传代实验中 ,2只大鼠也感染肝毛细线虫。 2只家猫未感染。 [结论 ]可用大鼠建立肝毛细线虫的动物模型 ,并可在实验室中传代。