Lipoxins synthesized from arachidonic acid act by?: (A) Decrease leucocyte migration, adhesion, chemotaxis, (B) Increase leucocyte migration, adhesion, chemotaxis, (C) Vasoconstrictio, (D) Increased vascular permeability
Answer is A. Ans. is 'a' i.e., Decrease leucocyte migration, adhesion, chemotaxis Effects of lipoxins (LXA4, LXB4 ) are :? Inhibit neutrophil chemotaxis and leukocyte recruitment (major action). Vasodilatation Promote moncytic phagocytosis of apoptotic neutrophils.