منابع مشابه
Mechanisms of oral tolerance revisited
Oral tolerance induction is thought to depend on special antigen presenting cells in the gut. A new report in the previous issue of Arthritis Research & Therapy supports this idea by demonstrating that indoleamine 2,3-dioxygenase-expressing dendritic cells in Peyer's patches from orally tolerized mice suppress T-cell responses via the generation of CD4+CD25+ regulatory T cells. This finding pro...
متن کاملThe oral glucose tolerance test, revisited.
Hyperglycaemia is necessary for the diagnosis of diabetes. For more than 35 years there has been a spirited controversy about the diagnostic criteria for Type 2 diabetes, in particular about the oral glucose tolerance test (OGTT). In a 1975 paper Marvin Siperstein referred to the OGTT as ‘a pitfall in the diagnosis of diabetes mellitus’. Now the controversy has returned in the wake of the 1997 ...
متن کاملOral tolerance for delayed type hypersensitivity contribution of local and peripheral mechanisms
Oral tolerance is a physiological immune mechanism, which controls the outcome of deleterious hypersensitivity reactions to environmental antigens absorbed through the gastrointestinal tract, and maintains homeostasis. Using a mouse model of oral tolerance of delayed type hypersensitivity to contact allergens, i.e. haptens, we have examined the mechanisms involved in the induction of oral toler...
متن کاملOral tolerance revisited: prior oral tolerization abrogates cholera toxin-induced mucosal IgA responses.
Oral delivery of a large dose or prolonged feeding of protein Ags induce systemic unresponsiveness most often characterized as reduced IgG and IgE Ab- and Ag-specific CD4(+) T cell responses. It remains controversial whether oral tolerance extends to diminished mucosal IgA responses in the gastrointestinal tract. To address this issue, mice were given a high oral dose of OVA or PBS and then ora...
متن کاملMechanisms of drought stress tolerance in cool season grasses
Drought stress is one of the most limiting abiotic stresses affecting growth, production and survival of plants in many areas of the world, and is expected to intensify considering the trend of climate change. Grass species are important for the sustainability of agricultural systems, forage resources for animal farming and landscapes. Grass species adapt to water deficit by different morpholog...
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ژورنال
عنوان ژورنال: Arthritis Research & Therapy
سال: 2008
ISSN: 1478-6354
DOI: 10.1186/ar2402