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- W2783268593 abstract "Abstract In this study, to determine whether diabetic (DM) mice are susceptible to Mycobacterium tuberculosis (Mtb) infection, we developed experimentally induced diabetes in wild type C57BL/6 mice with streptozotocin & nicotinamide. We then infected non-DM and DM mice with Mtb H37Rv by aerosol. Around 50% of Mtb infected DM (p=0.05) and 25% of uninfected DM (p=0.07) mice died in 5 to 6 months compared to no deaths in infected control mice. Six months after Mtb infection, there was a statistically significant but marginal increase in bacterial burden in the lungs of Mtb infected DM mice compared to non-DM infected mice (3.1 ± 0.4 x106 vs 0.9 ± 0.1 x 106, p=0.001) suggesting increased mortality was not due to increased bacterial burden. Real time PCR analysis of Mtb infected DM lungs indicated significantly increased pro- and anti-inflammatory cytokine gene expression compared to uninfected DM and infected control mice, including increased levels of IL-6 mRNA. Anti-IL-6 antibody treatment of Mtb infected DM mice enhanced the survival (100% vs 60% survival in isotype control antibody treated, p=0.02) and reduced pro- and anti-inflammatory cytokine production. Dendritic cells (DC), but not other immune cells were the major source for IL-6 in Mtb infected DM mice. NK cells of Mtb infected DM mice further enhanced IL-6 production by autologous DCs. Our results suggest NK-DC interaction enhance IL-6 production which drives the immune pathology and mortality of Mtb infected diabetic mice" @default.
- W2783268593 created "2018-01-26" @default.
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- W2783268593 date "2015-05-01" @default.
- W2783268593 modified "2023-10-01" @default.
- W2783268593 title "IL-6 regulates pro- and anti-inflammatory cytokine production and mortality of <i>Mycobacterium tuberculosis</i> infected type 2 diabetic mice (INC2P.418)" @default.
- W2783268593 doi "https://doi.org/10.4049/jimmunol.194.supp.55.12" @default.
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