Fischer M, Knauer S, Petzold D, Sonntag H G
Department of Hygienics, University of Heidelberg.
Zentralbl Hyg Umweltmed. 1994 Oct;196(3):258-69.
The filtration system investigated in this study uses the thermic convection caused by radiators for the adsorption of airborne particles. The effect of this filtration system on the reduction of clinical symptoms of allergic bronchial asthma was tested as well as its capability in retaining airborne allergens, in particular those of the house dust mite Dermatophagoides pteronyssinus (D. pter.), which are responsible for this special kind of asthma. Dust samples were taken before and after the heating season in households of 36 persons with D. pter. caused asthma. Their mite content was investigated using mite flotation and direct microscopy, their guanine content using the Acarex-test. An allergen extract obtained from the filters was tested on its allergen content by RAST-inhibition. It could be observed that compared to the preceding heating season 55% of the volunteers felt an improvement of their asthmatic symptoms. It was possible to extract allergens of D. pteronyssinus, house dust and mould from the filters. All these results show the capability of the filters to adsorb house dust mite (HDM) allergens.
本研究中所调查的过滤系统利用散热器产生的热对流来吸附空气中的颗粒。测试了该过滤系统对减轻过敏性支气管哮喘临床症状的效果，以及其截留空气中过敏原的能力，尤其是对引起这种特殊类型哮喘的屋尘螨（粉尘螨）过敏原的截留能力。在36名由粉尘螨引起哮喘的患者家庭中，于供暖季节前后采集灰尘样本。使用螨浮选法和直接显微镜检查法研究其螨含量，使用Acarex测试法研究其鸟嘌呤含量。通过RAST抑制试验检测从过滤器中获得的过敏原提取物的过敏原含量。可以观察到，与上一个供暖季节相比，55%的志愿者感觉哮喘症状有所改善。从过滤器中能够提取出粉尘螨、屋尘和霉菌的过敏原。所有这些结果表明该过滤器具有吸附屋尘螨（HDM）过敏原的能力。
