<i>Usp19<sup>-/-</sup></i> mice produced higher levels of inflammatory cytokines and were more susceptible to TNF-α- and IL-1β-triggered septicemia death compared with their wild-type littermates.
Sepsis induces the activation of complement factor via 3 pathways and the release of inflammatory cytokines such as tumor necrosis factor alpha (TNF-α) and interleukin-1beta (IL-1β), resulting in a systemic inflammatory response.
IL-1β best predicted sepsis, with an area under the receiver operating characteristic (AUROC) of 0.71 (95% CI: 0.57-0.85); a combined biomarker-clinical characteristics model improved prediction (AUROC of 0.77, 95% CI: 0.67-0.85).
S158A-KI mice were more susceptible to sepsis due to a marked reduction in IL-1β, TNF-α, and IFN-γ production accompanied by an inability to clear bacteria and recruit leukocytes.
A correlation analysis showed that the levels of serum IL-37 and IL-1β were positively correlated.The level of IL-37 observed in sepsis was found to correlate with the severity of the inflammatory reaction.
Accordingly, the Syk inhibitor R406 augmented intracellular survival of the <i>Cgyps1-11</i>Δ mutant.Finally, we demonstrate that <i>C. glabrata</i> infection triggers elevated IL-1β production in mouse organs and that the <i>CgYPS</i> genes are required for organ colonization and dissemination in the murine model of systemic infection.
After IMD<sub>1-53</sub> treatment, inflammation caused by sepsis in vivo was greatly reduced, as shown by the downregulation of apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), nucleotide-binding domain and leucine-rich repeat containing family, pyrin containing 3 (NLRP3), pro-IL-1β, caspase 1, and nuclear translocation of nuclear factor-κB (NF-kB) protein levels.
As NLRP3-dependent release of IL-1β has a critical role in sepsis, the <i>in vivo</i> activity of scutellarin was assayed in a mouse model of bacterial sepsis, which was established by intraperitoneally injection of a lethal dose of viable <i>Escherichia coli</i>.
BTED for 6 hours significantly reduced the mRNA expression levels of tumor necrosis factor alpha (TNF-α) and IL-1β (all p < 0.05 vs. sepsis group), whereas mRNA expression of TNF-α and IL-1β in the intestine was increased after 6 hours' septic bile infusion compared with normal bile infusion group (all p < 0.05).
Caspase-12 is generally recognized as a negative regulator of the inflammatory response induced by infections, because it inhibits the activation of caspase-1 in inflammasome complexes, the production of the pro-inflammatory cytokines IL-1β and IL-18 and the overall response to sepsis.
Circulating concentrations of CRP, PCT, interleukin (IL)-10 and IL-1 receptor antagonist (IL-1Ra) were significantly higher in patients with sepsis, with IL-10 identified as the best biomarker in differentiating sepsis from SIRS.
Following its initial failures in the treatment of sepsis and the moderate success in the treatment of rheumatoid arthritis, IL-1 blocking therapies had a renaissance in the treatment of a number of autoinflammatory conditions, and IL-1 blocking therapies have been Food and Drug Administration (FDA)-approved for the treatment of the autoinflammatory conditions: cryopyrin-associated periodic syndromes (CAPS).
Genotypes CT and TT of rs1143643 (the IL1β gene) and genotype GG of rs2664349GG (the MMP-16 gene) were associated with a significantly increased overall risk of developing sepsis (p = 0.03, p = 0.05 and p = 0.03), whereas genotypes AG of rs4358188 (the BPI gene) and CT of rs1799946 (the DEFβ1 gene) were associated with a significantly reduced risk of developing sepsis (p = 0.05 for both).
Here, results showed that pretreatment with rapamycin reduced the pyroptosis of peritoneal macrophages stimulated by cecal contents and the release of inflammatory factors such as interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α); In septic mice, rapamycin treatment decreased the activation of inflammasome in lung, and alleviated the pathological injuries in lung, liver and spleen tissues during acute stage of sepsis.
Here, we demonstrate that IL-1β production during sepsis with uropathogenic <i>E. coli</i> is mediated by caspase-8, since caspase-8 and RIPK3 double knock out mice show substantially lower cytokine during sepsis and increased survival after injection of TNFα.
Here, we report that GBPs control inflammation and sepsis in mice injected with either free LPS or purified OMVs derived from Gram-negative <i>Escherichia coli</i> In agreement with our observations from <i>in vivo</i> experiments, we demonstrate that macrophages lacking GBP2 expression fail to induce pyroptotic cell death and proinflammatory interleukin-1β (IL-1β) and IL-18 secretion when exposed to OMVs.
Historically, TNF-alpha and IL-1 beta have been postulated as key mediators in sepsis, but selective inhibition of these cytokines has failed in clinical trials.
In a sepsis model, pretreatment with FSB inhibited the LPS-stimulated mRNA and protein levels of proinflammatory mediators, such as, iNOS, COX-2, TNF-α, IL-6 and IL-1β in plasma and liver.