Increased Th22 cell numbers in a general pediatric population with filaggrin haploinsufficiency: The Generation R Study.
Pediatr Allergy Immunol
; 32(6): 1360-1368, 2021 08.
Article
em En
| MEDLINE
| ID: mdl-33715246
ABSTRACT
BACKGROUND:
Mutations in the filaggrin gene (FLG) affect epidermal barrier function and increase the risk of atopic dermatitis (AD). We hypothesized that FLG mutations affect immune cell composition in a general pediatric population. Therefore, we investigated whether school-aged children with and without FLG mutations have differences in T- and B-cell subsets.METHODS:
This study was embedded in a population-based prospective cohort study, the Generation R Study, and included 523 children of European genetic ancestry aged 10 years. The most common FLG mutations in the European population (R501X, S1085CfsX36, R2447X, and S3247X) were genotyped. Additionally, 11-color flow cytometry was performed on peripheral blood samples to determine helper T (Th), regulatory T (Treg), and CD27+ and CD27- memory B cells. Subset analysis was performed in 358 non-AD and 102 AD cases, assessed by parental questionnaires.RESULTS:
FLG mutations were observed in 8.4% of the total population and in 15.7% of the AD cases. Children with any FLG mutation had higher Th22 cell numbers compared to FLG wild-type children in the general and non-AD population. Children with and without FLG mutations had no difference in Th1, Th2, Th17, Treg, or memory B-cell numbers. Furthermore, in children with AD, FLG mutation carriership was not associated with differences in T- and B-cell subsets.CONCLUSIONS:
School-aged children of a general population with FLG mutations have higher Th22 cell numbers, which reflects the immunological response to the skin barrier dysfunction. FLG mutations did not otherwise affect the composition of the adaptive immunity in this general pediatric population.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Haploinsuficiência
/
Proteínas de Filamentos Intermediários
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Child
/
Humans
Idioma:
En
Revista:
Pediatr Allergy Immunol
Assunto da revista:
ALERGIA E IMUNOLOGIA
/
PEDIATRIA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Holanda