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The challenges of developing and optimising an assay to measure 25-hydroxyvitamin D in salivaWe have developed an LC-MS/MS assay that accurately measures saliva 25(OH)D3 levels, which correlated with serum levels
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Short-term changes in frequencies of circulating leukocytes associated with narrowband UVB phototherapy in people with clinically isolated syndromeSince B cells are increasingly targeted by MS therapies, the effects of narrowband UVB phototherapy in people with MS should be investigated further
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Cellular and molecular mechanisms of vitamin D in food allergyEpidemiological evidence from the past decade suggests a role of vitamin D in food allergy pathogenesis
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PGE2 pulsing of murine bone marrow cells reduces migration of daughter monocytes/macrophages in vitro and in vivoOur results reveal long-lasting changes to progenitor cells of monocytes/macrophages by a 2-hour dimethyl PGE2 pulse that, in turn, limits the migration of their daughter cells to chemoattractants and inflammatory mediators.
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Vitamin D supplementation of initially vitamin D-deficient mice diminishes lung inflammation with limited effects on pulmonary epithelial integrityIn disease settings, vitamin D may be important for maintaining optimal lung epithelial integrity and suppressing inflammation, but less is known of its effects prior to disease onset.
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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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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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Vitamin D metabolites are lower with active Crohn’s disease and spontaneously recover with development of remissionWe aimed to characterise vitamin D metabolism in a cohort of patients with active and inactive Crohn’s disease
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Effects of UVR exposure on the gut microbiota of mice and humansBoth human and murine studies report that multiple exposures to sub-erythemal UV radiation can increase the diversity of the gut microbiome