Abstract
Purpose of Review
We seek to establish whether high-density lipoprotein HDL metabolism and reverse cholesterol transport (RCT) impairment is an intrinsic feature of familial hypercholesterolemia (FH).
Recent Findings
RCT from macrophages (m-RCT), a vascular cell type of major influence on atherosclerosis, is impaired in FH due to defective low-density lipoprotein receptor (LDLR) function via both the HDL- and LDL-mediated pathways. Potential mechanisms include impaired HDL metabolism, which is linked to increased LDL levels, as well as the increased transport of cellular unesterified cholesterol to LDL, which presents a defective catabolism.
Summary
RCT dysfunction is consistently associated with mutation-positive FH linked to decreased HDL levels as well as impaired HDL remodeling and LDLR function. It remains to be explored whether these alterations are also present in less well-characterized forms of FH, such as cases with no identified mutations, and whether they are fully corrected by current standard treatments.
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Abbreviations
- ABC:
-
ATP-binding cassette transporter
- APO:
-
Apolipoprotein
- CE:
-
Cholesterol ester
- CEC:
-
Cholesterol efflux capacity
- CETP:
-
Cholesteryl ester transfer protein
- CVD:
-
Cardiovascular disease
- FH:
-
Familial hypercholesterolemia
- HDL:
-
High-density lipoprotein
- HDL-c:
-
HDL cholesterol
- LCAT:
-
Lecithin:cholesterol acyltransferase
- LDL:
-
Low-density lipoprotein
- LDL-c:
-
LDL cholesterol
- LDLR:
-
LDL receptor
- LXR:
-
Liver X receptor
- miRNA:
-
Micro RNA
- m-RCT:
-
Macrophage-specific reverse cholesterol transport
- PCSK9:
-
Proprotein convertase subtilisin/kexin type 9
- PLTP:
-
Phospholipid transfer protein
- RCT:
-
Reverse cholesterol transport
- SR-BI:
-
Scavenger receptor BI
- SREBP:
-
Sterol response element-binding protein
- TICE:
-
Transintestinal cholesterol excretion
- UC:
-
Unesterified cholesterol
- VLDL:
-
Very low-density lipoprotein
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Funding
This article was partly funded by the Instituto de Salud Carlos III and FEDER “Una manera de hacer Europa” grants PI18/00164 (to F.B.-V.), PI17/00232 (to J. J.), and PI19/00136 (to J.C.E-G), and Miguel Servet Type 2 contract (CPII18/00004 to J.J.); grants 12/C/2015 (to F.B-V) and 201602.31 (to J.J.) from La Fundació la Marató TV3; Ministerio de Ciencia, Innovación y Universidades, Subprograma Ramón y Cajal (RyC-20172879 to N.R.); and Red de Investigación “Enfermedades Metabólicas y Cáncer” (RED2018-102799-T to J.J). CIBERDEM is an Instituto de Salud Carlos III project.
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Escolà-Gil, J.C., Rotllan, N., Julve, J. et al. Reverse Cholesterol Transport Dysfunction Is a Feature of Familial Hypercholesterolemia. Curr Atheroscler Rep 23, 29 (2021). https://doi.org/10.1007/s11883-021-00928-1
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DOI: https://doi.org/10.1007/s11883-021-00928-1