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- Paloschi, V, et al.
(författare)
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Mechanistic Links between Non-Coding RNAs and Myeloid Cell Inflammation in Atherosclerosis
- 2019
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Ingår i: Thrombosis and haemostasis. - : Georg Thieme Verlag KG. - 2567-689X .- 0340-6245. ; 119:8, s. 1205-1211
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Tidskriftsartikel (refereegranskat)abstract
- Inflammation plays a pivotal role in the chronicity of atherosclerotic lesion development and progression. Myeloid cells are involved in all stages of atherosclerosis development: they contribute in early phases to endothelial dysfunction and create a pro-inflammatory environment responsible for disease progression. Numerous studies over the last decade have repeatedly provided evidence for the crucial importance for different classes of non-coding ribonucleic acids (RNAs) in regulating gene expression, as well as messenger RNA and protein stability. Functional studies using tools to either over-express or inhibit these non-coding RNAs showcased strong effects on tempering vascular inflammation and atherosclerosis progression. With this current review article, we want to discuss prominent examples of non-coding RNAs, being either produced by myeloid cells or affecting their recruitment and activity in the context of vascular inflammation, atherosclerosis and consequential diseases (such as myocardial infarction and stroke). All of the discussed transcripts were thoroughly studied in mechanistic explorations, indicating that they have the capability to modulate inflammatory cascades in the vasculature during disease exacerbation.
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- Van Avondt, K, et al.
(författare)
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Therapeutic Targeting of Neutrophil Extracellular Traps in Atherogenic Inflammation
- 2019
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Ingår i: Thrombosis and haemostasis. - : Georg Thieme Verlag KG. - 2567-689X .- 0340-6245. ; 119:4, s. 542-552
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Tidskriftsartikel (refereegranskat)abstract
- Neutrophils and neutrophil extracellular traps (NETs) have a robust relationship with atherothrombotic disease risk, which led to the idea that interfering with the release of NETs therapeutically would ameliorate atherosclerosis. In human studies, acute coronary events and the pro-thrombotic state cause markedly elevated levels of circulating deoxyribonucleic acid (DNA) and chromatin, suggesting that DNase I might produce cardiovascular benefit. DNase I reproduced the phenotype of peptidylarginine deiminase 4 (PAD4) deficiency and showed a significant benefit for atherothrombotic disease in experimental mouse models. However, the mechanisms of benefit remain unclear. Insights into the mechanisms underlying NET release and atherogenic inflammation have come from transgenic mouse studies. In particular, the importance of neutrophil NET formation in promoting atherothrombotic disease has been shown and linked to profound pro-inflammatory and pro-thrombotic effects, complement activation and endothelial dysfunction. Recent studies have shown that myeloid deficiency of PAD4 leads to diminished NET formation, which in turn protects against atherosclerosis burden, propagation of its thrombotic complications and notably macrophage inflammation in plaques. In addition, oxidative stress and neutrophil cholesterol accumulation have emerged as important factors driving NET release, likely involving mitochondrial reactive oxidants and neutrophil inflammasome activation. Further elucidation of the mechanisms linking hyperlipidaemia to the release of NETs may lead to the development of new therapeutics specifically targeting atherogenic inflammation, with likely benefit for cardiovascular diseases.
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