In this study, we investigated the mRNA expression of A<sub>1</sub>, A<sub>2A</sub>, A<sub>2B</sub>, and A<sub>3</sub> adenosine receptors, ectonucleoside triphosphate diphosphohydrolase-1 (CD39), and ecto-5'-nucleotidase (CD73) in the monocyte-derived macrophages from AS patients in comparison to healthy controls.