Article ; Online: Inflammasome activation mediated by oxidised low-density lipoprotein in patients with sleep apnoea and early subclinical atherosclerosis.
The European respiratory journal
2023 Volume 61, Issue 3
Abstract: Background: Atherosclerosis is a common comorbidity of obstructive sleep apnoea (OSA) patients, caused by the interaction of dyslipidaemia and systemic inflammation. The OSA pro-inflammatory response is mediated by NLRP3 inflammasome activation, which ... ...
Abstract | Background: Atherosclerosis is a common comorbidity of obstructive sleep apnoea (OSA) patients, caused by the interaction of dyslipidaemia and systemic inflammation. The OSA pro-inflammatory response is mediated by NLRP3 inflammasome activation, which requires a priming signal mediated by intermittent hypoxia (IH) and an activation signal provided by soluble stimulus present in plasma. Our objectives were to study oxidised low-density lipoprotein (oxLDL) expression in OSA patients with or without early subclinical atherosclerosis (eSA) as well as its contribution to NLRP3 activation and tissue factor (TF) release. Methods: We analysed oxLDL, key components of the NLRP3 inflammasome cascade and TF in plasma and monocytes from OSA patients and non-apnoeic subjects, with or without eSA as determined by increased carotid intima-media thickness without the appearance of atherosclerotic plaques. The oxLDL contribution to NLRP3 inflammasome activation was assessed using Results: High levels of oxLDL were identified in plasma from OSA patients, particularly in those with eSA, as well as an overexpression of NLRP3 cascade components and TF. Furthermore, Conclusions: OSA patients with eSA exhibit NLRP3 activation by IH and the presence of oxLDL capable of releasing TF, constituting a pathway for the interaction between dyslipidaemia and systemic inflammation in the development of atherosclerotic lesions. |
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MeSH term(s) | Humans ; Inflammasomes/metabolism ; NLR Family, Pyrin Domain-Containing 3 Protein ; Carotid Intima-Media Thickness ; Lipoproteins, LDL/metabolism ; Atherosclerosis/complications ; Inflammation/metabolism ; Sleep Apnea, Obstructive/complications ; Dyslipidemias |
Chemical Substances | Inflammasomes ; oxidized low density lipoprotein ; NLR Family, Pyrin Domain-Containing 3 Protein ; Lipoproteins, LDL |
Language | English |
Publishing date | 2023-03-02 |
Publishing country | England |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 639359-7 |
ISSN | 1399-3003 ; 0903-1936 |
ISSN (online) | 1399-3003 |
ISSN | 0903-1936 |
DOI | 10.1183/13993003.01401-2022 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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