中国寄生虫学与寄生虫病杂志

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共聚焦激光扫描显微镜在蠕形螨检测中的应用

肖佳,郭爱元,黄健,陈静*   

  1. 中南大学湘雅三医院皮肤科,长沙410013
  • 出版日期:2016-08-30 发布日期:2016-11-07

Application of Confocal Laser Scanning Microscopy in Detection of Demodex Mites

XIAO Jia, GUO Ai-yuan, HUANG Jian, CHEN Jing*   

  1. Department of Dermatology, The Third Xiangya Hospital, Central South University, Changsha 410013, China
  • Online:2016-08-30 Published:2016-11-07

摘要:

目的 探讨共聚焦激光扫描显微镜(confocal laser scanning microscopy,CLSM)在面部蠕形螨感染检测中的应用价值。 方法 选取来湘雅三医院皮肤科门诊就诊的面部皮损为丘疹、脓疱、红斑、鳞屑的疑似蠕螨病者,排除有其他基础疾病史者共120例为检测对象,记录患者的基本情况和面部皮损的类型,用CLSM探头对被检患者面部皮损部位进行蠕形螨感染情况检测。随机选取经CLSM检测提示蠕形螨感染阳性者20例,用挤刮物涂片作光学显微镜检查验证。 结果 120例面部疑似蠕螨病患者经CLSM检测提示蠕形螨感染阳性者59例,蠕形螨检出率为49.2%,其中男性检出率为61.1%,女性检出率为39.4%。20例的挤刮物涂片镜检,均为毛囊蠕形螨(Demodex folliculorum)感染。120例被检者中,随着年龄增高蠕形螨检出率呈升高的趋势,其中40~49岁年龄组蠕形螨检出率最高,为72.7%(16/22),与10~19岁组(21.1%,4/19)、20~29岁组(37.8%,14/37)比较差异均有统计学意义(P<0.05)。面部不同皮损类型的蠕形螨感染者中,单位面积内(4 mm×4 mm)不同蠕形螨感染数的感染者比例有所不同,Ⅰ型皮损(以红斑鳞屑为主)中,<5条、≥5条的分别占80.6%(29/36)、19.4%(7/36)(P<0.01);Ⅱ型皮损(以丘疹脓疱为主)中,分别占52.2%(12/23)和47.8%(11/23)(P>0.05),两型之间比较差异均有统计学意义(P<0.05)。 结论 CLSM成像技术对面部蠕形螨的诊断效率较高,且具有在体、无创、无痛苦、实时、动态等优点。

关键词: 共聚焦激光扫描显微镜, 蠕螨病, 毛囊蠕形螨

Abstract:

Objective To explore the application value of confocal laser scanning microscopy(CLSM) for detection of facial Demodex mites. Methods One hundred and twenty patients without basic diseases visiting the Department of Dermatology of the Third Xiangya Hospital for papules, pustules, erythema, and scales and suspected to have facial demodicosis were selected. Basic information and types of facial lesion were recorded. CLSM was performed to examine Demodex infection. Twenty patients with positive infection as indicated by CLSM were randomly selected for further verification with microscopy. Results Among the 120 patients, 59 were positive for facial demodicosis as indicated by CLSM, with a detection rate of 49.2%, 61.1% of males and 39.4% of females. The 20 patients with further microscopic examination were all diagnosed as Demodex folliculorum infection. Among the 120 patients, the Demodex detection rate showed a trend of increase with age, with the highest rate (72.7%, 16/22) in the group of 40-49 years[P<0.05 versus the 21.1% (4/19) in the group of 10-19 years and the 37.8% (14/37) in 20-29]. In addition, there was a significant difference in the percentage of patients with <5 mites and ≥5 mites in area of 4 mm×4 mm between type I (mainly erythema and scales)(80.6%, 29/36; 19.4%, 7/36, respectively; P<0.01) and type II lesions (mainly papules and pustules) (52.2%, 12/23; 47.8%, 11/23, respectively; P>0.05)(P<0.05). Conclusion CLSM is an efficient technique for detecting facial Demodex, and is advantageous as it offers in-situ, noninvasive, painless, real-time and dynamic detection.

Key words: Confocal laser scanning microscopy, Demodicosis, Demodex folliculorum