Sotiraki S T, Koutinas A F, Leontides L S, Adamama-Moraitou K K, Himonas C A
Laboratory of Parasitology and Parasitic Diseases, Faculty of Veterinary Medicine, Department of Infectious and Parasitic Diseases, Aristotle University, GR 54006, Thessaloniki, Greece.
Vet Parasitol. 2001 Apr 19;96(4):309-15. doi: 10.1016/s0304-4017(01)00383-1.
Otodectes cynotis is responsible for at least 50% of canker cases diagnosed in cats world-wide. The role of Demodex cati in the pathogenesis of otitis and acne is still obscure. The aims of this study were to estimate the prevalence of O. cynoyis and D. cati infestations in clinically normal cats in northern Greece, to determine the factors that are associated with the probability and severity of infestation in the cat, and to examine the importance of these mites in the pathogenesis of feline acne. Samples from 161 cats were examined by flushing the ear canals and by taking skin scrapings of the chin and lip area. The results were combined with various factors (sex, age, living style, hair coat type and presence of pruritus, of ear discharge, of acne-like lesions) in order to carry out a risk analysis. Two separate logistic regression analyses were performed. One, on the infestation/non-infestation potential with O. cynotis and the other, on the degree of such infestation as mild-to-moderate (< or =5 mites/field) or severe (>5 mites/field). D. cati was not detected in any of the 161 cats. The prevalence of O. cynotis was estimated at 25.5% (95% confidence interval (CI) 19-32). The rate of mite infestation was higher with the presence of ear discharge (odds ratio 9, 95% CI 3.3-24.5), periaural pruritus (odds ratio 3.6, 95% CI 1.8-8) and acne-like lesions (odds ratio 3.3, 95% CI 1.2-9). Cats with mild-to-moderate degree of infestation had 18 times higher chance of exhibiting an ear discharge than those with a severe infestation. The log-odds of mild-to-moderate parasitism were linearly related to the age.
耳痒螨是全球范围内至少50%被诊断出患有耳炎的猫的致病原因。猫蠕形螨在耳炎和痤疮发病机制中的作用仍不明确。本研究的目的是估计希腊北部临床健康猫中耳痒螨和猫蠕形螨的感染率，确定与猫感染可能性和严重程度相关的因素，并研究这些螨虫在猫痤疮发病机制中的重要性。通过冲洗耳道以及刮取下巴和唇部区域的皮肤，对161只猫的样本进行检查。将结果与各种因素（性别、年龄、生活方式、毛发类型以及是否存在瘙痒、耳溢液、痤疮样病变）相结合，以进行风险分析。进行了两项独立的逻辑回归分析。一项针对耳痒螨的感染/未感染可能性，另一项针对轻度至中度感染（≤5只螨/视野）或重度感染（>5只螨/视野）的程度。在161只猫中均未检测到猫蠕形螨。耳痒螨的感染率估计为25.5%（95%置信区间（CI）19 - 32）。出现耳溢液（优势比9，95% CI 3.3 - 24.5）、耳周瘙痒（优势比3.6，95% CI 1.8 - 8）和痤疮样病变（优势比3.3，95% CI 1.2 - 9）时螨虫感染率更高。轻度至中度感染的猫出现耳溢液的几率是重度感染猫的18倍。轻度至中度寄生的对数优势与年龄呈线性相关。
