Pitten F A, Scholler M, Krüger U, Effendy I, Kramer A
Institute of Hygiene and Environmental Medicine, University of Greifswald, Greifswald, Germany.
Eur J Dermatol. 2001 Nov-Dec;11(6):534-7.
Besides mites, filamentous fungi and yeasts play an important role as domestic allergens. Among different allergen avoidance strategies the efficacy of synthetic mattress encasings has been demonstrated for the reduction of house dust mites. Whether these synthetic encasings are also able to reduce the growth of fungi on the mattress under domestic conditions has not been assessed so far. To determine if the fungal growth on mattresses can be reduced by the use of synthetic encasings we assessed the fungal colonisation of mattresses covered either by conventional cotton encasings or by polyurethane encasings impermeable to particles > 3 mum. Within a 12-month period dust samples were obtained from the mattresses. Fungal quantities were measured by counting colonies on agar plates incubated at 20 degrees C and 37 degrees C. The counts of fungi were significantly higher on mattresses with cotton encasings. Penicillium spp. and Aspergillus spp. were isolated most frequently. Therefore the application of synthetic encasings with similar properties to the encasings used in this investigation is recommended as part of an allergen avoidance strategy for patients sensitised to fungal allergens.
除了螨虫外，丝状真菌和酵母菌作为家庭过敏原也起着重要作用。在不同的过敏原规避策略中，合成床垫套减少屋尘螨的效果已得到证实。到目前为止，尚未评估这些合成床罩在家庭环境下是否也能减少床垫上真菌的生长。为了确定使用合成床罩是否可以减少床垫上的真菌生长，我们评估了用传统棉质床罩或对大于3微米颗粒不可渗透的聚氨酯床罩覆盖的床垫的真菌定植情况。在12个月的时间内，从床垫上采集灰尘样本。通过计算在20摄氏度和37摄氏度下培养的琼脂平板上的菌落数来测量真菌数量。棉质床罩的床垫上真菌数量明显更高。最常分离出青霉属和曲霉属。因此，建议使用与本研究中所用床罩具有相似特性的合成床罩，作为对真菌过敏原敏感患者过敏原规避策略的一部分。
