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Seo, S.U.,Kamada, N.,Munoz-Planillo, R.,Kim, Y.G.,Kim, D.,Koizumi, Y.,Hasegawa, M.,Himpsl, Stephanie D.,Browne, Hilary P.,Lawley, Trevor D.,Mobley, Harry L.T.,Inohara, N.,Nunez, G. Cell Press 2015 Immunity Vol.42 No.4
The microbiota stimulates inflammation, but the signaling pathways and the members of the microbiota involved remain poorly understood. We found that the microbiota induces interleukin-1β (IL-1β) release upon intestinal injury and that this is mediated via the NLRP3 inflammasome. Enterobacteriaceae and in particular the pathobiont Proteus mirabilis, induced robust IL-1β release that was comparable to that induced by the pathogen Salmonella. Upon epithelial injury, production of IL-1β in the intestine was largely mediated by intestinal Ly6C<SUP>high</SUP> monocytes, required chemokine receptor CCR2 and was abolished by deletion of IL-1β in CCR2<SUP>+</SUP> blood monocytes. Furthermore, colonization with P. mirabilis promoted intestinal inflammation upon intestinal injury via the production of hemolysin, which required NLRP3 and IL-1 receptor signaling in vivo. Thus, upon intestinal injury, selective members of the microbiota stimulate newly recruited monocytes to induce NLRP3-dependent IL-1β release, which promotes inflammation in the intestine.
J.E. Martin-Alfonso,M.J. Diaz,N. Nunez,C. Valencia,J.M. Franco 한국공업화학회 2011 Journal of Industrial and Engineering Chemistry Vol.17 No.6
The influence of cellulose pulp ethylation processing conditions has been evaluated to design suitable renewable and biodegradable lubricating greases from cellulose pulp-based gel-like dispersions. Ethyl/glucose molar ratio (E/G) has a positive effect on the ethyl groups degree of substitution (DS). Gel-like biodegradable dispersions of cellulose pulp in castor oil have been prepared by adding ethylated cellulose samples differing in the substitution degree to modify the rheological properties of castor oil. The rheology of ethyl cellulose/castor oil binary systems is highly influenced by DS. The linear viscoelastic functions and consistency are very similar to those found in traditional lithium lubricating greases.