Recent studies have provided strong evidence for the presence of ozone in atherosclerotic lesions. In addition, modification of LDL has been suggested to be involved in atherosclerosis. In the present study it has been investigated whether ozonized LDL (ozLDL) modulates the NF-κB system.
For the first time, ozLDL has been prepared and characterized. Afterwards, it has been shown that activation of NF-κB by LPS was reversibly inhibited by ozLDL in THP-1 cells in a dose-dependent manner, whereas TNF signaling was not affected. Comparable inhibitory effects were observed in other cell lines. Furthermore, ozLDL markedly lowered stimulus-induced IRAK-1-associated signaling and κB-dependent target-gene expression. Finally, cholesterol ozonization products were identified as effective ozLDL inhibitory compounds.
This study shows that ozLDL inhibits NF-κB and IRAK-1-associated signaling which may impair immune function and promote apoptosis.
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Recent studies have provided strong evidence for the presence of ozone in atherosclerotic lesions. In addition, modification of LDL has been suggested to be involved in atherosclerosis. In the present study it has been investigated whether ozonized LDL (ozLDL) modulates the NF-κB system.
For the first time, ozLDL has been prepared and characterized. Afterwards, it has been shown that activation of NF-κB by LPS was reversibly inhibited by ozLDL in THP-1 cells in a dose-dependent manner, whereas...
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