Tilki Engin, Zeytun Erhan, Doğan Salih
Erzincan Üniversitesi Fen Bilimleri Enstitüsü, Biyoloji Anabilim Dalı, Erzincan, Türkiye.
Turkiye Parazitol Derg. 2017 Jun;41(2):80-86. doi: 10.5152/tpd.2017.5156.
This study aimed to determine the prevalence and density of Demodex folliculorum and D. brevis in Erzincan Province and the association between Demodex spp. and skin moisture, pH, and temperature.
The study included total 300 healthy participants without dermatological ailments and residing in Erzincan Province. Moisture, pH, and temperature of the cheek were measured, and the presence of mite was determined in samples from the cheek, nasolabial, and chin region using the standard superficial skin biopsy technique.
The prevalence and density of D. folliculorum and D. brevis were found to be 61.3% (mean 14.3/cm2) and 23.3% (mean 3.2/cm2), respectively, in healthy participants. Infestation by Demodex spp. was greater in the cheek (mean 10.4/cm2), followed by the nasolabial region (mean 7.2/cm2) and chin (mean 6.6/cm2), respectively (p<0.001). The prevalence and density of Demodex spp. were greater in those with dry skin (mean 11.6/cm2), pH of 5.5-7.0 (mean 11.2/cm2), and temperature of 20-23°C (mean 13.1/cm2). Males, with aged >60 years, with lower educational status, and who were single were significantly more infested with Demodex spp.
Demodex mites are very prevalent in healthy individuals with different skin moisture, skin pH, skin temperature, and demographic characteristics. This may be taken into consideration when epidemiological and clinical studies are conducted on patients having different dermatological ailments.
本研究旨在确定埃尔津詹省毛囊蠕形螨和短蠕形螨的患病率及密度，以及蠕形螨属与皮肤水分、pH值和温度之间的关联。
该研究共纳入300名居住在埃尔津詹省、无皮肤病的健康参与者。测量脸颊的水分、pH值和温度，并使用标准的浅表皮肤活检技术，在脸颊、鼻唇沟和下巴区域的样本中确定螨虫的存在情况。
在健康参与者中，毛囊蠕形螨和短蠕形螨的患病率及密度分别为61.3%（平均14.3/cm²）和23.3%（平均3.2/cm²）。蠕形螨属在脸颊（平均10.4/cm²）的感染率更高，其次是鼻唇沟区域（平均7.2/cm²）和下巴（平均6.6/cm²）（p<0.001）。在皮肤干燥（平均11.6/cm²）、pH值为5.5 - 7.0（平均11.2/cm²）以及温度为20 - 23°C（平均13.1/cm²）的人群中，蠕形螨属的患病率和密度更高。年龄>60岁、教育程度较低且单身的男性感染蠕形螨属的情况明显更多。
蠕形螨在具有不同皮肤水分、皮肤pH值、皮肤温度和人口统计学特征的健康个体中非常普遍。在对患有不同皮肤病的患者进行流行病学和临床研究时，可能需要考虑这一点。
