PMID- 20705913 OWN - NLM STAT- MEDLINE DCOM- 20101220 LR - 20211020 IS - 1524-4636 (Electronic) IS - 1079-5642 (Print) IS - 1079-5642 (Linking) VI - 30 IP - 11 DP - 2010 Nov TI - Increased atherosclerosis in mice with vascular ATP-binding cassette transporter G1 deficiency--brief report. PG - 2103-5 LID - 10.1161/ATVBAHA.110.212985 [doi] AB - OBJECTIVE: The objective of this study was to investigate the role of vascular ATP-binding cassette transporter G1 (ABCG1) in atherogenesis without a confounding difference in macrophage ABCG1 expression. ABCG1 is highly expressed in macrophages and endothelial cells. ABCG1 preserves endothelial function by maintaining endothelial NO synthase activity and by reducing adhesion molecule expression and monocyte adhesion. METHODS AND RESULTS: To investigate the role of vascular ABCG1 in atherosclerosis in vivo Abcg1(-/-)/Ldlr(-/-) and Ldlr(-/-) mice were transplanted with wild-type bone marrow and fed a Western-type diet for 12 or 23 weeks. The atherosclerotic lesion area was similar in both groups after 12 weeks but was increased in Abcg1(-/-)/Ldlr(-/-) recipients after 23 weeks, especially in the aortic arch (2.2-fold; P<0.01). Endothelial NO synthase-mediated vascular relaxation was impaired in male Abcg1(-/-)/Ldlr(-/-) recipients. CONCLUSIONS: Our data show an atheroprotective role of vascular ABCG1, especially in the aortic arch, likely related to its role in the preservation of endothelial NO synthase activity. FAU - Westerterp, Marit AU - Westerterp M AD - Division of Molecular Medicine, Department of Medicine, Columbia University, New York, NY 10032, USA. FAU - Koetsveld, Joris AU - Koetsveld J FAU - Yu, Shuiqing AU - Yu S FAU - Han, Seongah AU - Han S FAU - Li, Rong AU - Li R FAU - Goldberg, Ira J AU - Goldberg IJ FAU - Welch, Carrie L AU - Welch CL FAU - Tall, Alan R AU - Tall AR LA - eng GR - R01 HL102395/HL/NHLBI NIH HHS/United States GR - HL102395/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20100812 PL - United States TA - Arterioscler Thromb Vasc Biol JT - Arteriosclerosis, thrombosis, and vascular biology JID - 9505803 RN - 0 (ABCG1 protein, mouse) RN - 0 (ATP Binding Cassette Transporter, Subfamily G, Member 1) RN - 0 (ATP-Binding Cassette Transporters) RN - 0 (Lipoproteins) SB - IM MH - ATP Binding Cassette Transporter, Subfamily G, Member 1 MH - ATP-Binding Cassette Transporters/metabolism MH - Animals MH - Aorta/metabolism/physiopathology MH - Atherosclerosis/*metabolism MH - Disease Models, Animal MH - Lipoproteins/*deficiency/metabolism MH - Mice PMC - PMC3116721 MID - NIHMS237085 EDAT- 2010/08/14 06:00 MHDA- 2010/12/21 06:00 PMCR- 2011/11/01 CRDT- 2010/08/14 06:00 PHST- 2010/08/14 06:00 [entrez] PHST- 2010/08/14 06:00 [pubmed] PHST- 2010/12/21 06:00 [medline] PHST- 2011/11/01 00:00 [pmc-release] AID - ATVBAHA.110.212985 [pii] AID - 10.1161/ATVBAHA.110.212985 [doi] PST - ppublish SO - Arterioscler Thromb Vasc Biol. 2010 Nov;30(11):2103-5. doi: 10.1161/ATVBAHA.110.212985. Epub 2010 Aug 12.