Abstract:
:Prenatal glucocorticoids are routinely administered to pregnant women at risk of preterm delivery in order to improve survival of the newborn. However, in half of the cases, birth occurs outside the beneficial period for lung development. Glucocorticoids are potent immune modulators and cause apoptotic death of immature T cells, and we have previously shown that prenatal betamethasone treatment at doses eliciting lung maturation induce profound thymocyte apoptosis in the offspring. Here, we asked if there are long-term consequences on the offspring's immunity after this treatment. In the non-obese diabetic mouse model, prenatal betamethasone clearly decreased the frequency of pathogenic T cells and the incidence of type 1 diabetes (T1D). In contrast, in the lupus-prone MRL/lpr strain, prenatal glucocorticoids induced changes in the T cell repertoire that resulted in more autoreactive cells. Even though glucocorticoids transiently enhanced regulatory T cell (Treg) development, these cells did not have a protective effect in a model for multiple sclerosis which relies on a limited repertoire of pathogenic T cells for disease induction that were not affected by prenatal betamethasone. We conclude that prenatal steroid treatment, by inducing changes in the T cell receptor repertoire, has unforeseeable consequences on development of autoimmune disease. Our data should encourage further research to fully understand the consequences of this widely used treatment.
journal_name
Front Immunoljournal_title
Frontiers in immunologyauthors
Gieras A,Gehbauer C,Perna-Barrull D,Engler JB,Diepenbruck I,Glau L,Joosse SA,Kersten N,Klinge S,Mittrücker HW,Friese MA,Vives-Pi M,Tolosa Edoi
10.3389/fimmu.2017.01505subject
Has Abstractpub_date
2017-11-13 00:00:00pages
1505issn
1664-3224journal_volume
8pub_type
杂志文章abstract::Multiple sclerosis is a chronic auto-inflammatory disease of the central nervous system affecting patients worldwide. Neuroinflammation in multiple sclerosis is mainly driven by peripheral immune cells which invade the central nervous system and cause neurodegenerative inflammation. To enter the target tissue, immune ...
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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pub_type: 杂志文章,评审
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pub_type: 杂志文章,评审
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journal_title:Frontiers in immunology
pub_type: 杂志文章
doi:10.3389/fimmu.2017.02000
更新日期:2018-01-22 00:00:00
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journal_title:Frontiers in immunology
pub_type: 杂志文章,评审
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更新日期:2017-06-19 00:00:00
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