background: type 1 diabetes (t1d) is a t cell mediated autoimmune disease targeting the insulin-producing β cells within pancreatic islets. autoimmune diseases may develop as a consequence of altered balance between regulatory (tregs) and autoreactive t cells. objectives: to evaluate treg cells frequency and suppressive function in the peripheral blood of newly diagnosed t1d patients in compari...

Background: The development of a maternal immune response to fetal antigens and deficiency in regulatory T-cells (Tregs) may lead to preeclampsia. A plausible explanation for the reduced Treg cell function in women with preeclampsia is the presence of exhausted Treg cells which express CD279 or programmed cell death receptor-1 (PD-1), a negative regulatory molecule associated w...

up-regulation of cd4+cd25+cd127low/- regulatory t cells (tregs) is a new target in the treatment of asthma. human bone marrow mesenchymal stem cells can up-regulate cd4+cd25+cd127low/- regulatory t cells in vitro,  meanwhile, heme oxygenase-1 (ho-1) plays an important role in the development and maintenance of cd4+cd25+ regulatory t cells. however the mechanism has not yet been adequately under...

background:   brucellosis is one of the most common chronic diseases, with widespread distribution. in spite of cell-mediated immunity (cmi) modulated mainly via activated t-helper type 1 (th1) cells, brucellosis can advance to chronic disease in about 10-30% of cases. regulatory t cells (treg cells) are involved the immune response to brucellosis; however, their role, particularly in the chang...

conclusions the inhibition of tregs is a novel therapeutic approach to cure chronically hbv infected patients. however, further studies are needed to investigate the safety and efficacy of this approach. results considering the increased levels of regulatory cytokines and also regulatory t cells (tregs) during chb, it seems that these cells are deeply involved in chb infection. the inhibition o...

background: recurrent miscarriage (rm) affects 2-5% of pregnant women. paternal lymphocyte immunotherapy is a common treatment for rm patients but the outcome has not been consistent. therefore, combined therapy with other immunosuppressive drugs such as 1 a, 25-dihydroxy-vitamin-d3 (vitamin d3) may improve the outcome. objectives: to investigate the effect of vitamin d3 on the balance of two e...

background: adipose derived stem cells (ascs) provoke the accumulation and expansion of regulatory t cells, leading to the modulation of immune responses in tumor microenvironment. objective: to assess the effect of tumoral ascs on the trend of regulatory t cells differentiation. methods: peripheral blood naïve cd4+ t cells were co-cultured with ascs derived from breast cancer or normal breast ...

background: regulatory t cells have been suggested to have a protective role against acute rejection in allograft recipients. however, there is little information available about their contribution to chronic rejection process. the role of transforming growth factor-beta 1 (tgf- β1) as a profibrogenic and/or immunoregulatory cytokine in renal allografts is also controversial. objectives: to eva...