50 research outputs found
The JAK inhibitor ruxolitinib reduces inflammation in an ILC3-independent model of innate immune colitis
Innate immunity contributes to the pathogenesis of inflammatory bowel disease (IBD). However, the mechanisms of IBD mediated by innate immunity are incompletely understood and there are limited models of spontaneous innate immune colitis to address this question. Here we describe a new robust model of colitis occurring in the absence of adaptive immunity. RAG1-deficient mice expressing TNFAIP3 in intestinal epithelial cells (TRAG mice) spontaneously developed 100% penetrant, early-onset colitis that was limited to the colon and dependent on intestinal microbes but was not transmissible to co-housed littermates. TRAG colitis was associated with increased mucosal numbers of innate lymphoid cells (ILCs) and depletion of ILC prevented colitis in TRAG mice. ILC depletion also therapeutically reversed established colitis in TRAG mice. The colitis in TRAG mice was not prevented by interbreeding to mice lacking group 3 ILC nor by depletion of TNF. Treatment with the JAK inhibitor ruxolitinib ameliorated colitis in TRAG mice. This new model of colitis, with its predictable onset and colon-specific inflammation, will have direct utility in developing a more complete understanding of innate immune mechanisms that can contribute to colitis and in pre-clinical studies for effects of therapeutic agents on innate immune-mediated IBD
The Sudbury Neutrino Observatory
The Sudbury Neutrino Observatory is a second generation water Cherenkov
detector designed to determine whether the currently observed solar neutrino
deficit is a result of neutrino oscillations. The detector is unique in its use
of D2O as a detection medium, permitting it to make a solar model-independent
test of the neutrino oscillation hypothesis by comparison of the charged- and
neutral-current interaction rates. In this paper the physical properties,
construction, and preliminary operation of the Sudbury Neutrino Observatory are
described. Data and predicted operating parameters are provided whenever
possible.Comment: 58 pages, 12 figures, submitted to Nucl. Inst. Meth. Uses elsart and
epsf style files. For additional information about SNO see
http://www.sno.phy.queensu.ca . This version has some new reference
AN EFFICIENT METHOD FOR THE SYNTHESIS OF SUBSTITUTED 4-ACETOXYNAPHTHALENE-2-CARBOXYLATE ESTERS, ETHYL 4-ACETOXYBENZOFURAN-6-CARBOXYLATE, AND ETHYL 4-ACETOXYBENZOTHIOPHENE-6-CARBOXYLATE
Efficient Synthesis of (±)-\u3cem\u3eseco\u3c/em\u3e-Cyclopropaneindoline Analogs of CC-1065
Design and Synthesis of 1,2,9,9a-Tetrahydrocyclo propa[c]benz[e]indole-4-one (CBI) Dimers
Comprehensive analysis of structure-activity relationships of alpha-ketoheterocycles as sn-1-diacylglycerol lipase alpha inhibitors
Molecular Physiolog