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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The conversion of redox status of peritoneal macrophages during pathological progression of spontaneous inflammatory bowel disease in Janus family tyrosine kinase 3(-/-) and IL-2 receptor gamma(-/-) mice.

The distinct thiol redox status in macrophages, either elevated or reduced intracellular content of glutathione (GSH), was confirmed during aging in IL-2 receptor (IL-2R)gamma and Janus family tyrosine kinase (JAK)3 gene-disrupted mice. Oxidative macrophages (OMp) with reduced GSH dominated initially at a younger age in both mice. OMp-dominated JAK3 or IL-2R gamma chain-deficient mice showed shortened life longevity compared with wild-type littermates. These mice elicited spontaneous onsets of inflammatory bowel disease (IBD)-like symptoms accompanied with the conversion of the redox status of macrophages to reductive phenotypes with elevated intracellular GSH. Conversion of OMp to the reductive phenotype by GSH monoethyl ester or by a beta-(1-3)-glucan accelerated the disease onset, concomitant with the skewing from T(h)2 to T(h)1 responses. On the contrary, N,N'-diacetyl cystine dimethylester, which is capable of inducing OMp, delayed the incidence of IBD-like symptoms and improved the survival rate. This implies that the conversion of OMp/T(h)2 to reductive macrophages/T(h)1 may be critical for the disease progression. The study of these mice may provide insight into the mechanisms underlying Crohn's disease and ulcerative colitis.[1]


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