ArticleBiomedicines2022
Circulating Microvesicles in Association with the NLRP3 Inflammasome in Coronary Thrombi from STEMI Patients.
Article in Biomedicines, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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8 authors at 2 institutions in 2 countries.
Funding
Abstract
Microvesicles (MVs) are actively secreted by cells. The NLRP3-inflammasome and the interleukin 6 (IL-6)-pathways are central in cardiovascular disease. Knowledge of how the inflammasome influences the MVs is limited. In a cross-sectional study, we assessed whether MVs in plasma associate with genes encoding inflammasome signalling in coronary thrombi. Moreover, any relationships between inflammasome activation and phosphatidylserine (PS) externalization, determined through Annexin V (AV+) labelling, and myocardial injury, assessed by cardiac troponin T (cTnT), were analysed. Intracoronary thrombi and blood samples from STEMI patients (n = 33) were investigated. mRNA of NLRP3, caspase-1, interleukin-1β (IL-1β), interleukin-18 (IL-18), IL-6, soluble IL-6-receptor (sIL-6R), and glycoprotein-130 (gp130) were isolated from the thrombi and relatively quantified by RT-PCR. MVs were analysed by flow cytometry. Total AV+ MVs, mainly reflecting hypercoagulability, correlated positively to NLRP3 gene expression (r = 0.545, p = 0.009). A similar pattern was seen for platelet, endothelial and leukocyte derived MVs, separately. The majority of the MVs were AV− (96%). Total and AV− MVs correlated inversely with IL-1β (r = −0.399 and −0.438, respectively, p < 0.05, both) and gp130 (r = −0.457 and −0.502, respectively, p < 0.05, both). No correlations between MVs and cTnT were observed. Our findings indicate an association between NLRP3-inflammasome in coronary thrombi and procoagulant AV+ MVs in STEMI patients. The inverse relationships between AV− MVs and the gene expression of inflammasome activation may indicate an immuno-dampening role of this subpopulation.
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