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FcgammaRIIb Expression Is Decreased on Naive and Marginal Zone-Like B Cells From Females With Multiple SclerosisB cells are critical to the development of multiple sclerosis (MS), but the mechanisms by which they contribute to the disease are poorly defined. We hypothesised that the expression of CD32b (FcγRIIb), a receptor for the Fc region of IgG with inhibitory activities in B cells, is lower on B cell subsets from people with clinically isolated syndrome (CIS) or MS. CD32b expression was highest on post-naive IgM+ B cell subsets in healthy controls. For females with MS or CIS, significantly lower CD32b expression was identified on IgM+ B cell subsets, including naive and IgMhi MZ-like B cells, when compared with control females. Lower CD32b expression on these B cell subsets was associated with detectable anti-Epstein Barr Virus viral capsid antigen IgM antibodies, and higher serum levels of B cell activating factor. To investigate the effects of lower CD32b expression, B cells were polyclonally activated in the presence of IgG immune complexes, with or without a CD32b blocking antibody, and the expression of TNF and IL-10 in B cell subsets was assessed.
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UV offers new hope in fight against MSPeople at risk of developing multiple sclerosis (MS) have been offered a beacon of hope thanks to research into UV exposure.
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Vitamin D deficiency linked to childhood asthmaResearchers at The Kids Research Institute Australia have found children with vitamin D deficiency are more likely to develop asthma.
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Optimized 25-hydroxyvitamin D analysis using liquid-liquid extraction with 2D separation with LC/MS/MS detection, provides superior precisionThe analysis of 25-hydroxyvitamin D3 (25(OH)D3) and related metabolites represents a considerable challenge for both clinical and research laboratories...
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Vitamin D and atopy and asthma phenotypes in children: a longitudinal cohort studyVitamin D has been linked in some studies with atopy- and asthma-associated phenotypes in children with established disease,but its role in disease inception...
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The anti-inflammatory effects of interleukin-4 are not mediated by suppressor of cytokine signalling-1 (SOCS1)While it is known that the anti-inflammatory effects of interleukin (IL)-4 require new protein synthesis, the exact mechanisms by which IL-4 suppresses the prod
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Can skin exposure to sunlight prevent liver inflammation?Here we discuss how skin exposure to sunlight may suppress liver inflammation and the severity of NAFLD.
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Reticulon-1 and reduced migration toward chemoattractants by macrophages differentiated from the bone marrow of ultraviolet-irradiated and ultraviolet-chimeric miceBy using an anti-reticulon-1 Ab, a role for reticulon-1 in macrophage migration toward both CSF-1 and CCL2 was confirmed.
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Dietary Vitamin D Increases Percentages and Function of Regulatory T Cells in the Skin-Draining Lymph Nodes and Suppresses Dermal InflammationDietary vitamin D3 increased the suppressive activity of regulatory T cells in the skin-draining lymph nodes, which are poised to suppress dermal inflammation
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Sub-erythemal ultraviolet radiation reduces metabolic dysfunction in already overweight miceExposure to sunlight may limit cardiometabolic risk.