TY - JOUR T1 - T Regulatory Cells in Children with Atopic Dermatitis TT - Atopik Dermatitli Çocuklarda Regülatör T Hücreleri AU - Haskoloğlu, Zehra Şule PY - 2018 DA - October DO - 10.4274/atfm.87597 JF - Ankara Üniversitesi Tıp Fakültesi Mecmuası PB - Ankara University WT - DergiPark SN - 0365-8104 SP - 118 EP - 122 VL - 71 IS - 2 LA - en AB - Objectives: The aim of this study was to examine peripheral blood CD4+CD25high+FOXP3+ regulatory T (Treg) cell levels in children with atopic dermatitis (AD) and to evaluate their effects on the pathogenesis of the disease.Materials and Methods: Forty one patients (age between 1-60 months) satisfied the criteria for AD (Hanifin and Rajka criteria) and 20 healthy children were included into the study. Intracytoplasmic FOXP3 expression in CD4+CD25+ cells was measured by flow cytometry (Beckman Coulter FC500, USA, Software CXP 1.2). The change in mean fluorescence intensity (MFI) of the FOXP3 molecule relative to the MFI of the isotypic control was based on evaluation.Results: Children with atopic dermatitis have significantly lower levels of peripheral blood CD4+CD25high+FOXP3+ regulatory T cells and higher levels of CD4+CD25high+FOXP3+ regulatory T cell MFI than the control group (p KW - Atopic Dermatitis KW - Regulatory T KW - FOXP3 Expression KW - Flow Cytometry KW - Mean Fluorescence Intensity Levels N2 - Amaç: Bu çalışmanın amacı, atopik dermatitli (AD) çocuklarda periferik kanda CD4+CD25high+FOXP3+ regülatör T (Treg) hücreleri ve bu hücrelerin hastalığın patogenezi üzerine etkilerini değerlendirmektir.Gereç ve Yöntem: AD kriterlerini (Hanifin ve Rajka kriterlerini) karşılayan 41 AD’li hasta (yaş aralığı: 1-60 ay) ve 20 sağlıklı çocuk çalışmaya dahil edildi. CD4+CD25 + hücrelerde intrasitoplazmik FOXP3 ekspresyonu akım sitometrisi (Beckman Coulter FC500, USA, Software CXP 1.2) ile ölçüldü. Değerlendirmede FOXP3 molekülünün ortalama floresan yoğunluğunun (MFI) izotipik kontrolün MFI’ya göre değişimi esas alındı.Bulgular: AD’li çocukların kontrol grubuna göre; periferik kan Treg hücre seviyeleri düşük ve CD4+CD25high+FOXP3+Treg hücre MFI’ı daha yüksek bulundu (p CR - 1. Kristal L, Klein PA. Atopic dermatitis in infants and children: an update. Pediatr Clin North Am 2000;47:877-895. CR - 2. Bieber T. Atopic dermatitis. N Engl J Med 2008;358:1483-1494. CR - 3. Thomsen SF. Atopic dermatitis: natural history, diagnosis, and treatment. ISRN Allergy [Internet] 2014:354250 [cited 2014 September 01]; [about 7 p.]. Available from: http://www. hindawi.com/journals/isrn/2014/354250/ CR - 4. Romagnani S. Regulation of the T cell response. Clin Exp Allergy 2006;36:1357-1366. CR - 5. Stock P, DeKruyyff RH, Umetsu DT. Inhibition of the allergic response by regulatory T cells. Curr Opin Allergy Clin Immunol 2006;1:12-16. CR - 6. Baud O, Goulet O, Canioni D, et al. Treatment of the immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome (IPEX) by allogenic bone marrow transplantation. N Engl J Med 2001;344:1758-1762. CR - 7. Owen CJ, Jennings CE, Imrie H, et al. Mutational analysis of the FOXP3 gene and evidence for genetic heterogeneity in the immunodysregulation, polyendocrinopathy, enteropathy syndrome. J Clin Endocrinol Metab 2003;88:6034-6039. CR - 8. Ito Y, Adachi Y, Makino T, et al. Expansion of FOXP3-positive CD4+CD25+ T cells associated with disease activity in atopic dermatitis. Ann Allergy Asthma Immunol 2009;103:160-165. CR - 9. Szegedi A, Barath S, Nagy G, et al. Regulatory T cells in atopic dermatitis: epidermal dendritic cell clusters may contribute to their local expansion. Br J Dermatol 2009;160:984-993. CR - 10. Ou LS, Goleva E, Hall C, et al. T regulatory cells in atopic dermatitis and subversion of their activity by superantigens. J Allergy Clin Immunol 2004;113:756-763. CR - 11. Verhagen J, Akdis M, Traidl-Hoffmann C, et al. Absence of T regulatory cell expression and function in atopic dermatitis skin. J Allergy Clin Immunol 2006;117:176-183. CR - 12. Nakamura K, Kitani A, Strober W. Cell contact-dependent immunosuppression by CD4+CD25+ regulatory T cells is mediated by cell surface-bound transforming growth factor beta. J Exp Med 2001;194:629-644. CR - 13. Roesner LM, Floess S, Witte T, et al. Foxp3(+) regulatory T cells are expanded in severe atopic dermatitis patients. Allergy 2015;70:1656-1660. CR - 14. Stelmaszczyk-Emmel A, Zawadzka-Krajewska A, Szypowska A, et al. Frequency and activation of CD4+CD25 FoxP3+ regulatory T cells in peripheral blood from children with atopic allergy. Int Arch Allergy Immunol 2013;162:16-24. CR - 15. Hinz D, Bauer M, Röder S, et al. Cord blood Tregs with stable FOXP3 expression are influenced by prenatal environment and associated with atopic dermatitis at the age of one year. Allergy 2012;67:380-389. UR - https://doi.org/10.4274/atfm.87597 L1 - https://dergipark.org.tr/en/download/article-file/4945491 ER -