AIM: To investigate the effects of interleukin-17 A( IL-17 A) on the expression of adenosine triphosphate binding cassette transporter A1( ABCA1) in RAW264. 7 macrophages. METHODS: Mouse RAW264. 7 macrophages were treated with IL-17 A at different concentrations for 6 or 24 h,or treated with IL-17 A at the same concentration for different time. The expression of ABCA1 at mRNA and protein levels was determined by RT-qPCR and Western blot,respectively. Cholesterol efflux to apolipoprotein A1( Apo A-1) was eva...