Tag Archives: T cells

In BP lesional skin, immunohistochemistry and confocal microscopy were performed for CD4+, CD25+, forkhead/winged helix transcription factor (FOXP3)+, transforming growth factor (TGF)-β+ and interleukin (IL)-10+ cells. In addition, the number of CD4+CD25++FOXP3+ Tregs in peripheral blood was assessed by flow cytometry, and the levels of TGF-β and IL-10 were determined in serum samples by enzyme-linked immunosorbent assay before and after steroid therapy. Controls included patients with psoriasis, atopic dermatitis (AD) and healthy donors.

The frequency of FOXP3+ cells was significantly reduced in skin lesions from patients with BP (P < 0.001) compared with psoriasis and AD. Moreover, the number of IL-10+ cells was lower in BP than in psoriasis (P < 0.001) and AD (P = 0.002), while no differences were observed in the number of TGF-β+ cells. CD4+CD25++FOXP3+

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Treg in the peripheral blood of patients with BP was significantly reduced compared with healthy controls (P < 0.001), and augmented significantly after steroid therapy (P = 0.001). Finally, TGF-β and IL-10 serum levels were similar in patients with BP compared with healthy controls. However, after therapy, BP patients showed significantly higher IL-10 serum levels than before therapy (P = 0.01).

Full article available at: http://onlinelibrary.wiley.com/doi/10.1111/jdv.12091/abstract;jsessionid=C37D521517222D9766F5D0D339765626.d04t01?deniedAccessCustomisedMessage=&userIsAuthenticated=false

Antiga, E., Quaglino, P., Volpi, W., Pierini, I., Del Bianco, E., Bianchi, B., Novelli, M., Savoia, P., Bernengo, M.G., Fabbri, P. and Caproni, M. (2013), Regulatory T cells in skin lesions and blood of patients with bullous pemphigoid. Journal of the European Academy of Dermatology and Venereology. doi: 10.1111/jdv.12091

Inflammation is a key component of immune responses to infection, but when uncontrolled can lead to autoimmune diseases like Crohn’s disease, rheumatoid arthritis, type I diabetes, ankylosing spondylitis, lupus, psoriasis and multiple sclerosis. In these diseases inflammation is mediated by molecules of the immune system called cytokines and cells that respond to these cytokines called T cells. Autophagy is an ubiquitous process whereby cells degrade their own internal components, either to release valuable nutrients in times of starvation, or to remove damaged or noxious intracellular components. The work by Dr Harris and colleagues showed that autophagy also control release of the inflammatory cytokines and cells that have been implicated in the pathology of autoimmune diseases. The findings suggest that autophagy represents a potent target for new anti-inflammatory therapies, which could be beneficial in a range of autoimmune disorders. The group, in combination with Professor Kingston Mills, now hopes to apply these findings to specific models of autoimmune disease. The work is funded by Science Foundation Ireland as part of a Strategic Research Cluster (SRC) award based in The Trinity Biomedical Sciences Institute. “Autophagy is a common cellular process that is important for the maintenance of normal cell functions. Our work has shown that this process is

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important in the control of inflammation and, as such, could represent a particularly efficacious target for new drugs against inflammatory conditions. There are over 80 different autoimmune diseases, most of which are chronic and debilitating and can be difficult and expensive to treat. Any research which helps us to better understand the underlying mechanisms behind the control of inflammation will ultimately lead to better treatments,” explained Dr James Harris.

Read more at: http://medicalxpress.com/news/2012-10-important-role-autophagy-self-eating-cells.html#jCp