Sharma Dhruba, Dutta B K, Singh A B
Department of Botany, Rajiv Gandhi University, Rono Hills, Arunachal Pradesh, Doimukh 791112, India.
ISRN Allergy. 2011 Jun 7;2011:576849. doi: 10.5402/2011/576849. Print 2011.
Background. In the present study, quality and quantity of indoor dust mites was evaluated at the residence of 150 atopic allergic patients from four different districts of South Assam. Methods. Suspected patients with case history of allergic disease were selected for indoor survey. Dust samples (500 mg) were collected from the selected patient's house and were analyzed using standard methods. Results. About 60% of the selected patients were found suffering from respiratory disorders and rest 40% from skin allergy. The dominant mites recorded from indoor dust samples were Dermatophagoides followed by Blomia, Acarus, and Cheyletus while Caloglyphus was recorded in least number. The distribution of mites on the basis of housing pattern indicates that RCC type of buildings supports maximum dust mite's population followed by Assam type (semi-RCC) buildings, and the lowest count was observed in wooden houses. Environmental factors like temperature, rainfall, and relative humidity are found to determine the indoor mite's population. Severity of allergic attack in some of the typical cases was found to be proportional to the allergen load of mites in the dust samples. Conclusions. The economic status, housing pattern, and local environmental factors determine the diversity and abundance of dust mites in indoor environment.
背景。在本研究中，对来自阿萨姆邦南部四个不同地区的150名特应性过敏患者家中的室内尘螨质量和数量进行了评估。方法。选择有过敏性疾病病史的疑似患者进行室内调查。从选定患者家中采集灰尘样本（500毫克），并使用标准方法进行分析。结果。约60%的选定患者患有呼吸系统疾病，其余40%患有皮肤过敏。室内灰尘样本中记录到的主要螨虫是粉尘螨，其次是柏氏禽刺螨、粉螨和肉食螨，而食甜螨的记录数量最少。根据房屋类型的螨虫分布表明，钢筋混凝土结构的建筑物中尘螨数量最多，其次是阿萨姆式（半钢筋混凝土）建筑，木屋中的螨虫数量最少。发现温度、降雨量和相对湿度等环境因素决定了室内螨虫数量。在一些典型病例中，过敏发作的严重程度与灰尘样本中螨虫的过敏原负荷成正比。结论。经济状况、房屋类型和当地环境因素决定了室内环境中尘螨的多样性和数量。
