Abstract
Abdominal aortic aneurysm (AAA) is a chronic degenerative disease reaching high morbidity and mortality levels. Weakening of aortic wall and dilatation up 50% are the mainly characteristics of AAA, associated with atherosclerosis, proinflammatory cyto-kines increase, chronic inflammatory response, mainly CD4+ lymphocytes, producers of IFN-³ (Th1), lymphocytes IL-4 producers (Th2) and regu…