Article ; Online: HDL and cardiovascular disease: atherogenic and atheroprotective mechanisms.
2011 Volume 8, Issue 4, Page(s) 222–232
Abstract: The lipoprotein HDL has two important roles: first, it promotes reverse cholesterol transport, and second, it modulates inflammation. Epidemiological studies show that HDL-cholesterol levels are inversely correlated with the risk of cardiovascular events. ...
Abstract | The lipoprotein HDL has two important roles: first, it promotes reverse cholesterol transport, and second, it modulates inflammation. Epidemiological studies show that HDL-cholesterol levels are inversely correlated with the risk of cardiovascular events. However, many patients who experience a clinical event have normal, or even high, levels of HDL cholesterol. Measuring HDL-cholesterol levels provides information about the size of the HDL pool, but does not predict HDL composition or function. The main component of HDL, apolipoprotein A-I (apo A-I), is largely responsible for reverse cholesterol transport through the macrophage ATP-binding cassette transporter ABCA1. Apo A-I can be damaged by oxidative mechanisms, which render the protein less able to promote cholesterol efflux. HDL also contains a number of other proteins that are affected by the oxidative environment of the acute-phase response. Modification of the protein components of HDL can convert it from an anti-inflammatory to a proinflammatory particle. Small peptides that mimic some of the properties of apo A-I have been shown in preclinical models to improve HDL function and reduce atherosclerosis without altering HDL-cholesterol levels. Robust assays to evaluate the function of HDL are needed to supplement the measurement of HDL-cholesterol levels in the clinic. |
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MeSH term(s) | Apolipoprotein A-I/metabolism ; Cardiovascular Diseases/pathology ; Cholesterol, HDL/metabolism ; Cholesterol, HDL/physiology ; Cholesterol, LDL/metabolism ; Cholesterol, LDL/physiology ; Humans ; Inflammation/pathology ; Oxidative Stress ; Risk Assessment ; Risk Factors |
Chemical Substances | Apolipoprotein A-I ; Cholesterol, HDL ; Cholesterol, LDL |
Language | English |
Publishing date | 2011-02-08 |
Publishing country | England |
Document type | Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review |
ZDB-ID | 2490375-9 |
ISSN | 1759-5010 ; 1759-5002 |
ISSN (online) | 1759-5010 |
ISSN | 1759-5002 |
DOI | 10.1038/nrcardio.2010.222 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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