Normal and reconstituted high-density lipoprotein protects differentiated monocytes from oxidized low-density lipoprotein-induced apoptosis

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Kaur Navkiran; Kumari Savita; Ghosh Sujata

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Journal Paper

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Journal: ARYA Atherosclerosis Year:2020 | Volume:16 | Issue:6 Page(s): 269-277

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Title

Normal and reconstituted high-density lipoprotein protects differentiated monocytes from oxidized low-density lipoprotein-induced apoptosis

Author(s)

Kaur Navkiran | Kumari Savita | Ghosh Sujata | Issue Writer Certificate

Keywords

Atherosclerosis

Lipoproteins

Macrophages

Apoptosis

Abstract

BACKGROUND: The progression of Atherosclerosis is an ongoing struggle between cell division and cell death. Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1), a novel receptor for oxidized low-density lipoprotein (ox-LDL), mediates ox-LDL-induced Apoptosis of monocytes. The anti-atherogenic function of plasma high-density lipoprotein (HDL) includes the ability to inhibit Apoptosis of macrophage, although the exact mechanism and consequences of Apoptosis in the development and progression of this disease are still controversial. Thus, in the present study, the effect of normal HDL (nHDL) and reconstituted HDL (rHDL) on ox-LDL-induced cellular responses in differentiated monocytes in view of Apoptosis and LOX-1 receptor expression was investigated. METHODS: The expression of B-cell lymphoma-2 (Bcl-2), B-cell lymphoma-extra large (Bcl-xL), caspase-3, and cytochrome c (cyt c) was assessed and substantiated in 30 hyper-LDL and control subjects. To assess the expression of LOX-1 on differentiated THP-1 cells, western blotting was carried out, followed by statistical analysis in 30 patients and control subjects. RESULTS: nHDL/rHDL inhibited the ox-LDL-induced Apoptosis in the differentiated human monocytic cells, THP-1 cells, and differentiated monocytes of patient and control subjects. Enhanced expression of scavenger receptor, LOX-1, in the differentiated monocytes was also downregulated in presence of nHDL/rHDL. nHDL/rHDL could inhibit the ox-LDL-induced mitochondrial apoptotic pathway and aberrant expression of LOX-1 in patients. Double immunostaining using fluorescein isothiocyanate (FITC)-conjugated ox-LDL and LOX-1 in apoptotic cells indicates its significant role in the differentiated monocytes. CONCLUSION: It was observed that nHDL/rHDL could promote macrophage survival by preserving mitochondrial integrity from ox-LDL-induced Apoptosis.

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APA: Copy

Kaur, Navkiran, Kumari, Savita, & Ghosh, Sujata. (2020). Normal and reconstituted high-density lipoprotein protects differentiated monocytes from oxidized low-density lipoprotein-induced apoptosis. ARYA ATHEROSCLEROSIS, 16(6), 269-277. SID. https://sid.ir/paper/684062/en

Vancouver: Copy

Kaur Navkiran, Kumari Savita, Ghosh Sujata. Normal and reconstituted high-density lipoprotein protects differentiated monocytes from oxidized low-density lipoprotein-induced apoptosis. ARYA ATHEROSCLEROSIS[Internet]. 2020;16(6):269-277. Available from: https://sid.ir/paper/684062/en

IEEE: Copy

Navkiran Kaur, Savita Kumari, and Sujata Ghosh, “Normal and reconstituted high-density lipoprotein protects differentiated monocytes from oxidized low-density lipoprotein-induced apoptosis,” ARYA ATHEROSCLEROSIS, vol. 16, no. 6, pp. 269–277, 2020, [Online]. Available: https://sid.ir/paper/684062/en

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