Type 1 Diabetes Brazilian patients exhibit reduced frequency of recent thymic emigrants in regulatory CD4+CD25+Foxp3+T cells.

To control immune responses, regulatory CD4+CD25+Foxp3+ T cells (Treg) maintain their wide and diverse repertoire through continuous arrival of recent thymic emigrants (RTE). However, during puberty, the activity of RTE starts to decline as a natural process of thymic involution, introducing consequences, not completely described, to the repertoire. Type 1 diabetes (T1D) patients show quantitative and qualitative impairments on the Treg cells. Our aim was to evaluate peripheral Treg and RTE cell frequencies, in T1D patients from two distinct age groups (young and adults) and verify if HLA phenotypes are concomitant associated. To this, blood samples from Brazilian twenty established T1D patients (12 young and 8 adults) and twenty-one healthy controls (11 young and 10 adults) were analyzed, by flow cytometry, to verify the percentages of CD4, Treg (CD4+CD25+Foxp3+) and the subsets of CD45RA+ (naive) and CD31+(RTE) within then. Furthermore, the HLA typing was also set. We observed that the young established T1D patients feature decreased frequencies in total Treg cells and naive RTE within Treg cells. Significant prevalence of HLA alleles, associated with risk, in T1D patients, was also identified. Performing a multivariate analysis, we confirmed that the cellular changes described offers significant variables that distinct T1D patients from the controls. Our data collectively highlight relevant aspects about homeostasis imbalances in the Treg cells of T1D patients, especially in young, and disease prognosis; that might contribute for future therapeutic strategies involving Treg cells manipulation.

[Unveiling the daily experience of the hospitalized adolescent]. / Desvelando o cotidiano do adolescente hospitalizado.

My experience in the adolescence was marked by the hospitalization process. Currently, as a nursing professional that take care of hospitalized young, there arose inquietudes that originated this study. The investigation object was the significance of the hospitalization in the adolescence, having as objective to understand this significance for the hospitalized adolescent. It was used the qualitative approach in the light of the Martin Heidegger's existential phenomenology. The setting was a specific internment unit for adolescents and the deponents were hospitalized young. This study made possible to understand that the adolescent unveiled himself as a being-with and understand of himself as a being--in the--world thrown to the death. The research pointed to the need of a real implementation of the public policies addressed to the hospitalized adolescent.