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. 2015 Nov;54(11):e448-52.
doi: 10.1111/ijd.12795. Epub 2015 Mar 13.

Microchimerism in alopecia areata

Erdinç Terzi  1 , Bilal Bulut  2 , Ümit Türsen  2 , Tamer İrfan Kaya  2 , Belma Türsen  3 , Mehmet Emin Erdal  4 , Şenay Görücü Yilmaz  4
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Microchimerism in alopecia areata

Erdinç Terzi et al. Int J Dermatol. 2015 Nov.

Abstract

Background: Autoimmunity is the main etiopathogenetic factor in alopecia areata. Microchimerism is the existence of allogeneic DNA in a living creature. There are variable studies investigating the role of microchimerism on the etiopathogenesis of autoimmune diseases. To our knowledge, no report has investigated the relationship between microchimerism and alopecia areata.

Objective: We aimed to investigate the possible role of microchimerism on alopecia areata.

Methods: We analyzed SRY gene levels as indicators of fetal microchimerism in our patient group. The patients were 29 women with alopecia areata, over 18 years old, who had visited our clinic between 2010 and 2013. Patients were divided into two groups; group 1 consisted of 14 patients having a son and group 2, 15 patients either nulliparous or having a daughter.

Results: Seventeen of 29 patients (58.6%) and four of 103 controls (3.9%) showed presence of an SRY gene. The difference between the patient and control groups was statistically significant (P < 0.001).

Conclusion: As a result of our study, microchimerism may be associated with the etiopathogenesis of alopecia areata. However, we think there is a need for a larger series of studies to support this hypothesis.

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