Wassenaar D P
Department of Dermatology, University Hospital, Utrecht, The Netherlands.
Exp Appl Acarol. 1988 Feb;4(1):53-62. doi: 10.1007/BF01213841.
In order to evaluate the effect of continuous, thorough vacuuming on house dust organisms and mite allergen, a cotton carpet was vacuumed every other day, six times in total. Seven weeks later, the carpet was cleaned by means of spray extraction. Samples were taken before and after this wet cleaning. In total 1150 g of dust was collected, containing approximately 174,000 arthropods (dead and alive) and 9000 X 10(6) fungal spores. In the course of the experiment, the amount of dust collected at each vacuuming decreased. The number of extracted house dust mites did not decrease significantly, but that of the predator mite Cheyletus did. The number of extracted fungal spores showed a significant decrease (from 142 to 16 X 10(6) spores/m2 per minute vacuuming), as did the extracted mite allergen per m2. After 7 weeks the number of mite eggs and complete house dust mites had increased enormously. After cleaning by spray extraction another increase in the number of complete mites and mite eggs was found, while the amount of mite allergen was diminished. The population growth of the house dust mite between the 6th and the 7th vacuuming is probably due to the decrease of their most important predator, Cheyletus. After the wet cleaning a number of extra eggs hatched, probably due to the high humidity in the carpet. The procedures used in this study to combat house dust mites may have an adverse effect in the long run.
为了评估持续、彻底吸尘对室内灰尘生物和螨过敏原的影响，每隔一天对一块棉质地毯进行吸尘，总共吸尘六次。七周后，通过喷雾抽吸法清洁地毯。在此次湿法清洁前后均采集了样本。总共收集了1150克灰尘，其中包含约174,000只节肢动物（死的和活的）以及9000×10⁶个真菌孢子。在实验过程中，每次吸尘收集到的灰尘量有所减少。吸出的屋尘螨数量没有显著减少，但捕食螨盲走螨的数量减少了。吸出的真菌孢子数量显著减少（从每分钟每平方米142×10⁶个孢子降至16×10⁶个孢子），每平方米吸出的螨过敏原数量也显著减少。7周后，螨卵和完整屋尘螨的数量大幅增加。在通过喷雾抽吸法清洁后，发现完整螨和螨卵的数量再次增加，而螨过敏原的量减少了。屋尘螨在第六次和第七次吸尘之间的种群增长可能是由于其最重要的捕食者盲走螨数量减少所致。湿法清洁后，一些额外的卵孵化了，可能是由于地毯中的高湿度。本研究中用于对抗屋尘螨的方法从长远来看可能会产生不利影响。
