title: The transcription levels of ABCA1, ABCG1 and SR-BI are negatively associated with plasma CRP in Chinese populations with various risk factors for atherosclerosis.
abstract: ATP binding cassette transporters (ABCA1, ABCG1) and scavenger receptor class B type I (SR-BI) are the three most important cellular cholesterol transporters that may prevent atherogenesis. The aim of this study was to investigate whether they were altered in Chinese populations with various risk factors for atherosclerosis and their potential associations with C-reactive protein (CRP). Healthy female controls (n = 30) and populations with various risk factors for atherosclerosis, such as type 2 diabetes (n = 17), hypertension (n = 12), overweight/obesity (n = 10), incipient nephropathy (n = 10), postmenopausal women (n = 9), male (n = 19), ageing male (n = 22), or smoking (n = 16), were recruited. ABCA1, ABCG1 and SR-BI mRNA levels in peripheral monocytes was determined. ABCG1 was decreased in all the risk populations except ageing. ABCA1 was decreased in all the risk populations except diabetes and male. SR-BI was decreased in those with overweight/obesity and incipient nephropathy. Circulating CRP was increased almost in all the risk populations except in males. The levels of ABCA1, ABCG1 and SR-BI were reduced in those with subclinically high CRP, and negatively associated with CRP level. These data indicates that ABCA1, ABCG1, and SR-BI are reduced in various populations under subclinically inflammatory conditions, which may potentially lead to impairing reverse cholesterol transport and developing atherosclerosis.
authors.affiliation: Department of Endocrinology, The First Affiliated Hospital, College of Medicine, Zhejiang University, 79# Qingchun Road, Hangzhou, Zhejiang 310003, China.
authors.forename: Chengjiang
authors.initials: C
authors.lastname: Li
authors.forename: Renyong
authors.initials: R
authors.lastname: Guo
authors.forename: Juanya
authors.initials: J
authors.lastname: Lou
authors.forename: Huali
authors.initials: H
authors.lastname: Zhou
mesh_terms: D064286:ATP Binding Cassette Transporter 1; D000070998:ATP Binding Cassette Transporter, Subfamily G, Member 1; D018528:ATP-Binding Cassette Transporters / Q000096:biosynthesis / Q000235:genetics*; D000328:Adult; D050197:Atherosclerosis / Q000235:genetics* / Q000378:metabolism; D001692:Biological Transport; D002097:C-Reactive Protein / Q000378:metabolism*; D002681:China; D003924:Diabetes Mellitus, Type 2 / Q000378:metabolism; D005260:Female; D006801:Humans; D006973:Hypertension / Q000378:metabolism; D007674:Kidney Diseases / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D009000:Monocytes / Q000378:metabolism; D009765:Obesity / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D051122:Scavenger Receptors, Class B / Q000096:biosynthesis / Q000235:genetics*
chemical_list: C577836:ABCA1 protein, human; C419353:ABCG1 protein, human; D064286:ATP Binding Cassette Transporter 1; D000070998:ATP Binding Cassette Transporter, Subfamily G, Member 1; D018528:ATP-Binding Cassette Transporters; D012333:RNA, Messenger; C495124:SCARB1 protein, human; D051122:Scavenger Receptors, Class B; D002097:C-Reactive Protein