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Updated: Feb 4, 2026
10:39
Isolation of High-density Lipoproteins for Non-coding Small RNA Quantification
Published on: November 28, 2016
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[DESIALATED LOW DENSITY LIPOPROTEINS IN HUMAN BLOOD]
Klinicheskaia Meditsina
|October 11, 2018
Summary
Modified low-density lipoproteins (LDLP) accumulate lipids in human aortic cells, driving atherosclerosis. These modified LDLPs interact with cell receptors, leading to cholesterol buildup and smooth muscle cell proliferation.
Area of Science:
- Cardiovascular Biology
- Lipid Metabolism
- Atherosclerosis Research
Background:
- Low-density lipoproteins (LDLP) are implicated in atherosclerosis.
- The precise mechanisms of LDLP-induced lipid accumulation in aortic cells remain unclear.
- Native and in vitro modified LDLP show differing effects on lipid accumulation.
Purpose of the Study:
- To review literature on circulating LDLP and their role in lipid accumulation.
- To investigate the paradox of LDLP's influence on intracellular lipid accumulation.
- To characterize modifications in atherogenic LDLPs.
Main Methods:
- Literature review of studies on circulating LDLP.
- Analysis of LDLP composition (carbon, protein, lipid) and modifications.
- Examination of LDLP interaction with cell receptors and proteoglycans.
- Investigation of cellular uptake, degradation, and cholesterol esterification.
Main Results:
- Atherogenic LDLPs undergo multiple modifications in human blood plasma.
- Multiply modified circulating LDLPs interact with various cell receptors and proteoglycans.
- Desialiated LDLPs are absorbed by cells, decreasing apolipoprotein degradation and increasing esterified cholesterol accumulation.
- LDLP accumulation stimulates smooth muscle cell proliferation and matrix synthesis.
Conclusions:
- Naturally occurring, multiply modified LDLPs are identified as key contributors to atherosclerosis at the cellular level.
- These modified LDLPs drive intracellular lipid accumulation and promote vascular smooth muscle cell proliferation.
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