Prevalence of <i>Demodex folliculorum</i> in young adults: relation with sociodemographic/hygienic factors and acne vulgaris

Okyay, Pınar; Ertabaklar, Hatice; Şavk, Ekin; Ertuğ, Sema

doi:10.1111/j.1468-3083.2006.01470.x

Cited by 34 publications

(51 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Past studies showed that detection rates on the cheeks were higher than those on the nose, the forehead and the chin (Meng et al, 1990;Okyay et al, 2006;Gao et al, 2008). The detection rate increased with the increasing frequency of examination, number of checkpoints and areas (Wang, 2000;Zhao et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Sociodemographic characteristics and risk factor analysis of Demodex infestation (Acari: Demodicidae)

Zhao

Guo

Meng

et al. 2011

J. Zhejiang Univ. Sci. B

View full text Add to dashboard Cite

Abstract:To identify sociodemographic characteristics and risk factor of Demodex infestation, 756 students aged 13-22 years in Xi'an, China were sampled for the school-based cross-sectional study. Demodex was examined using the cellophane tape method (CTP). The results showed that the total detection rate of Demodex was 67.6%. Logistic regression analysis revealed that five variables (gender, residence, sharing sanitary ware, frequency of face-wash per day, and use of facial cleanser) were found to be uncorrelated with Demodex infestation, whereas three variables (age, skin type, and skin disease) were found to be independent correlates. Students aged over 18 years had 22.1 times higher odds of Demodex infestation compared to those under 16 years and students aged 16-18 years also had 2.1 times higher odds compared to those aged 13-15 years. Odds of having a Demodex infestation for oily or mixed skin were 2.1 times those for dry or neutral skin. Students with a facial skin disease had 3.0 times higher odds of being infested with Demodex compared to those without. The inception rate of students with facial dermatoses increased in parallel with increasing mite count. The inception rates were 21.3%, 40.7%, 59.2%, and 67.7% in the negative, mild, moderate, and severe infestation groups, respectively (χ 2 =60.6, P<0.001). Specifically, the amount of infested mites and inception rate of acne vulgaris were positively correlated (R 2 =0.57, moderate infestation odds ratio (OR)=7.1, severe infestation OR=10.3). It was concluded that Demodex prevalence increases with age, and Demodex presents in nearly all adult human. Sebaceous hyperplasia with oily or mixed skin seems to favour Demodex proliferation. Demodex infestation could be associated with acne vulgaris. The CTP is a good sampling method for studies of Demodex prevalence.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Some authors consider them as mere passengers that can be practically found in normal adult skin or coincidentally in diseased skin (Kemal et al, 2005;Okyay et al, 2006). However, a growing number of case reports and epidemiological studies show that Demodex has an aversion for skin lesions of face.…”

Section: Introductionmentioning

confidence: 99%

Sociodemographic characteristics and risk factor analysis of Demodex infestation (Acari: Demodicidae)

Zhao

Guo

Meng

et al. 2011

J. Zhejiang Univ. Sci. B

View full text Add to dashboard Cite

show abstract

“…tarafından perianal bölgeden, selofan bant yöntemiyle hazırlanan preparatta bulunmuştu 21 . Ülkemizde demodeks türleri, görülme sıklığı ve enfestasyona etki eden faktörlerin belirlenmesine yönelik çeşitli çalışmalar yapılmıştır [12][13][14][15][16][17][18] . Demodeks türlerinin ırk farkı gözetmeksizin tüm dünyada yaygın olarak bulunduğu, sağlıklı deride yaşa bağlı olarak değişen enfestasyon oranının, yaşlılarda %100'e ulaştığı belirtilmiştir 4 .…”

Section: Discussionunclassified

“…Diğer mikroorganizmaların yanı sıra D. follikulorum bakteriler için uygun bir ortam hazırlayıp apse oluşumuna, şiddetli deri reaksiyonlarına ve belirgin pigmentasyonlara neden olabilir 10,11 . Türkiye'de farklı bölgelerdeki hastalar ve çeşitli yaş gruplarında demodeks türleri, görülme sıklığı ve enfestasyona etki eden faktörlerle ilgili yapılmış araştırmalara [12][13][14][15][16][17][18] ilave olarak bu çalışmada sağlık bilimleri fakültesi öğrencilerinde demodeks türlerinin görülme sıklığının ortaya çıkarılması amaçlanmıştır.…”

Section: Introductionunclassified

The prevalance of demodex species in faculty of health science students

Özdemir¹,

Özer²,

Özdemir³

et al. 2015

TURKDERM

View full text Add to dashboard Cite

Objective: Demodex folliculorum and D. brevis are acari that can be found in hair follicles and sebaceous glands of the skin, especially on face of human. This study was aimed to reveal prevalance of Demodex species in faculty of health science students. Methods: Skin surface biopsy was performed in subjects who completed socio-demographic questionnaire. The samples were examined under a microscope for demodex species. Results: In this study, at least one species of demodex was found to be positive in 47.4% of 270 students. Coexistence of D. folliculorum and D. brevis was observed in most of the subjects (50.8%). In all positive cases, the presence of only Demodex folliculorum or brevis was found in 29.7% and 19.5% respectively. There was no relationship between variables and demodex prevalence. Conclusion: This study showed that demodex species infestation is a common but an ignored health problem in faculty of health science students. GirişBiyolojik sınıflandırma sistemine göre Demodeks soyu; Arachnida sınıfı, Prostigmata takımı ve Demodicidae ailesinde yer alır 1,2 . Bu soya ait Demodeks follikulorum ve D. brevis olmak üzere iki türün, insanlarda parazitik yaşam sürdüğü bilinmektedir 3 . Zorunlu parazit olan bu türler, kıl folikülleri ve derinin yağ salgılayan bezlerinde bulunur 4 . Özellikle alın ve burun bölgelerinde, ayrıca kirpik, kulak ve genital bölgelerde, omuz başı, ön kol gibi yağlı ve kıl kökü barındıran vücut bölgelerinde yerleşir 3,[5][6][7] . İnsandan insana yakın temas, tokalaşma ve öpüşme ile bulaştığı bildirilmiştir 3,7,8 .

show abstract

“…In the present study, although we included and analyzed 63 papers about the association between Demodex infestation and acne vulgaris, only 3 English papers (Baysal et al, 1997;Zhao et al, 2011a;2011b) matched the inclusion criteria. Also only one study we could searched used SSB method (Okyay et al, 2006), and it did not match the inclusion criteria. The pervasiveness of the results and conclusions was impaired because of the scarcity of English articles.…”

Section: Discussionmentioning

confidence: 99%

A meta-analysis of association between acne vulgaris and Demodex infestation

Zhao

et al. 2012

J. Zhejiang Univ. Sci. B

View full text Add to dashboard Cite

Until now, etiology of acne vulgaris is still uncertain. Although clinicians usually deny the association between Demodex infestation and acne vulgaris, it has been proved in some clinical practices. To confirm the association between Demodex infestation and acne vulgaris, a meta-analysis was conducted. Predefined selection criteria were applied to search all published papers that analyzed the association between Demodex infestation and acne vulgaris (January 1950 to August 2011) in ISI Web of Knowledge, MEDLINE, and China National Knowledge Infrastructure (CNKI) databases. A meta-analysis was performed to calculate odds ratios (ORs) and 95% confidence intervals (CIs) based on fixed effects models or random effects models. We enrolled the 60 Chinese and 3 English papers in this meta-analysis, which covered Turkey and 25 different provinces/municipalities in China and 42 130 participants including students and residents, aged from 1 to 78 years. The pooled OR in random effects models is 2.80 (95% CI, 2.34-3.36). Stability is robust according to sensitivity analysis. The fail-safe number is 18 477, suggesting that at least 18 477 articles with negative conclusions would be needed to reverse the conclusion that acne vulgaris was related to Demodex infestation. So the effect of publication bias was insignificant and could be ignored. It was concluded that acne vulgaris is associated with Demodex infestation. This indicates that when regular treatments for acne vulgaris are ineffective, examination of Demodex mites and necessary acaricidal therapies should be considered.

show abstract

Prevalence of Demodex folliculorum in young adults: relation with sociodemographic/hygienic factors and acne vulgaris

Cited by 34 publications

References 5 publications

Sociodemographic characteristics and risk factor analysis of Demodex infestation (Acari: Demodicidae)

Sociodemographic characteristics and risk factor analysis of Demodex infestation (Acari: Demodicidae)

The prevalance of demodex species in faculty of health science students

A meta-analysis of association between acne vulgaris and Demodex infestation

Contact Info

Product

Resources

About