Skin-associated lymphocytes in the peripheral blood of patients with atopic dermatitis: signs of subset expansion and stimulation
Summary
This summary is machine-generated.In atopic dermatitis (AD), circulating skin-associated T cells (CLA+) are expanded, particularly in children under 10. These CLA+ T cells show signs of increased activation, highlighting their role in AD pathogenesis.
Area Of Science
- Immunology
- Dermatology
- Cell Biology
Background
- Skin-associated T cells are identified by cutaneous lymphocyte-associated antigen (CLA).
- In atopic dermatitis (AD), CLA+ T cells contain allergen-reactive memory cells and secrete TH2 cytokines, indicating their role in disease mechanisms.
Purpose Of The Study
- To investigate if circulating CLA+ T cells are increased in patients with AD.
- To compare peripheral blood lymphocyte subpopulations in AD patients versus control subjects.
Main Methods
- Utilized 3-color flow cytometry to analyze peripheral blood samples.
- Included pediatric and young adult patients with mild or severe AD, other atopic diseases, and healthy controls.
Main Results
- No significant differences in general lymphocyte proportions (T cells, B cells, NK cells) were observed.
- Severe AD patients showed increased CD4+ memory cells and HLA-DR+ T cells.
- Significantly expanded CLA+ T cells and CLA+/CD4+ T cells were found in severe AD patients, especially those under 10 years old.
Conclusions
- Circulating CLA+ T cells are expanded and activated in AD patients.
- These changes primarily involve CD4+ memory T cells and are most pronounced in children under 10.
- The findings underscore the importance of CLA+ T cells in AD pathophysiology, particularly in pediatric cases.
View abstract on PubMed