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Role of HDL, ABCA1, and ABCG1 transporters in cholesterol efflux and immune responses.
TLDR
These studies have shown that the traditional roles of HDL and ABC transporters in cholesterol efflux and reverse cholesterol transport are mechanistically linked to antiinflammatory and immunosuppressive functions of HDL. Expand
Cholesterol efflux and atheroprotection: advancing the concept of reverse cholesterol transport.
High-density lipoprotein (HDL) has been proposed to have several antiatherosclerotic properties, including the ability to mediate macrophage cholesterol efflux, antioxidant capacity, antiinflammatoryExpand
HDL, ABC transporters, and cholesterol efflux: implications for the treatment of atherosclerosis.
TLDR
New studies highlight the central importance of the ATP-binding cassette (ABC) transporters ABCA1 and ABCG1 in reducing macrophage foam cell formation, inflammation, and atherosclerosis. Expand
Cholesterol, inflammation and innate immunity
TLDR
Therapeutic interventions such as increased production or infusion of high-density lipoproteins may sever the links between cholesterol accumulation and inflammation, and have beneficial effects in patients with metabolic diseases. Expand
ATP-Binding Cassette Transporters and HDL Suppress Hematopoietic Stem Cell Proliferation
TLDR
The findings indicate that ABCA1, ABCG1, and HDL inhibit the proliferation of hematopoietic stem and multipotential progenitor cells and connect expansion of these populations with leukocytosis and accelerated atherosclerosis. Expand
Combined deficiency of ABCA1 and ABCG1 promotes foam cell accumulation and accelerates atherosclerosis in mice.
TLDR
The results suggest that the combined effects of ABCA1 and ABCG1 in mediating macrophage sterol efflux are central to the antiatherogenic properties of HDL. Expand
ApoE regulates hematopoietic stem cell proliferation, monocytosis, and monocyte accumulation in atherosclerotic lesions in mice.
TLDR
A specific role is suggested for proteoglycanbound ApoE at the surface of HSPCs to promote cholesterol efflux via ABCA1/ABCG1 and decrease cell proliferation, monocytosis, and atherosclerosis. Expand
Increased Inflammatory Gene Expression in ABC Transporter–Deficient Macrophages: Free Cholesterol Accumulation, Increased Signaling via Toll-Like Receptors, and Neutrophil Infiltration of
TLDR
The results suggest that high-density lipoprotein and apolipoprotein A-1 exert anti-inflammatory effects by promoting cholesterol efflux via ABCG1 and ABCA1 with consequent attenuation of signaling via Toll-like receptors. Expand
Long-term treatment with interleukin-1β induces insulin resistance in murine and human adipocytes
TLDR
IL1B is upregulated in adipose tissue of obese and insulin-resistant mouse models and may play an important role in the development of insulin resistance in murine and human adipose cells. Expand
ATP‐binding cassette transporters G1 and G4 mediate cholesterol and desmosterol efflux to HDL and regulate sterol accumulation in the brain
TLDR
These findings provide the first in vivo demonstration of a role for Abcg4 in sterol efflux in the brain and show that Abcgl and AbcG4 have overlapping functions in astrocytes, promoting efflux of cholesterol, desmosterol, and possibly other sterol biosynthetic intermediates to HDL. Expand
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