Objective: To evaluate whether colchicine treatment was associated with the inhibition of NLRP3 inflammasome activation in patients with COVID-19.
Methods: We present a post hoc analysis from a double-blinded placebo-controlled randomized clinical trial (RCT) on the effect of colchicine for the treatment of COVID-19. Serum levels of NOD-like receptor protein 3 (NLRP3) inflammasome products-active caspase-1 (Casp1p20), IL-1β, and IL-18-were assessed at enrollment and after 48-72 h of treatment in patients receiving standard-of-care (SOC) plus placebo vs. those receiving SOC plus colchicine. The colchicine regimen was 0.5 mg tid for 5 days, followed by 0.5 mg bid for another 5 days.
Results: Thirty-six patients received SOC plus colchicine, and thirty-six received SOC plus placebo. Colchicine reduced the need for supplemental oxygen and the length of hospitalization. On Days 2-3, colchicine lowered the serum levels of Casp1p20 and IL-18, but not IL-1β.
Conclusion: Treatment with colchicine inhibited the activation of the NLRP3 inflammasome, an event triggering the 'cytokine storm' in COVID-19.
Trial Registration Numbers: RBR-8jyhxh.
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http://dx.doi.org/10.1007/s00011-023-01718-y | DOI Listing |
Front Immunol
December 2024
School of Medicine, Shenzhen University, Shenzhen, China.
J Otol
October 2024
Department of Otorhinolaryngology, the First Hospital of Jilin University, Changchun, 130021, Jilin, China.
Noise-induced hearing loss (NIHL) is primarily driven by inflammatory processes within the cochlea, where noise exposure triggers the activation of the NOD-like receptor protein 3 (NLRP3) inflammasome, leading to an inflammatory cascade. The interaction between increased NLRP3 expression and NF-κB activity can further amplify cochlear inflammation. Our findings reveal that (R)-PFI-2 hydrochloride, a selective inhibitor of the SETD7 enzyme, effectively inhibits the activation of the cochlear NF-κB pathway, suppresses the release of pro-inflammatory factors, and prevents inflammasome assembly.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
Atrial fibrillation (AF) represents the commonly occurring cardiac arrhythmia and the main factor leading to stroke and heart failure. Hydrogen (H2) is a gaseous signaling molecule that has the effects of anti-inflammation and antioxidation. Our study provides evidence that hydrogen decreases susceptibility to AngII-mediated AF together with atrial fibrosis.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Cardiology, Liaocheng People's Hospital Affiliated to Shandong First Medical University, Liaocheng, 252000, China.
The NOD‑like receptor protein domain associated protein 3 (NLRP3) inflammasome is critical in inflammatory responses and may be a valuable prognostic biomarker in acute coronary syndrome (ACS). We aimed to investigate the association between NLRP3 inflammasome levels and short-term outcomes in patients with ACS. We enrolled 295 patients with ACS who were monitored for 6 months for major adverse cardiovascular events (MACEs).
View Article and Find Full Text PDFJ Physiol Investig
January 2025
Department of Emergency, Shijiazhuang Traditional Chinese Medicine Hospital, Shijiazhuang, China.
Sepsis is a life-threatening condition that often results in severe brain injury, primarily due to excessive inflammation and mitochondrial dysfunction. This study aims to investigate the neuroprotective effects of Apelin-13, a bioactive peptide, in a rat model of sepsis-induced brain injury (SBI). Specifically, we examined the role of Apelin-13 in regulating mitophagy through the phosphatase and tensin homolog-induced putative kinase 1 (PINK1)/Parkin pathway and its impact on nucleotide-binding oligomerization domain-like receptor pyrin domain-containing 3 (NLRP3) inflammasome-mediated pyroptosis and oxidative stress.
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