Lipoxins synthesized from the arachidonic acid act by-
Effects of lipoxins (LXA4, LXB4) are

Inhibit neutrophil chemotaxis and leukocyte recruitment (major action).
Vasodilatation
Promote monocytic phagocytosis of apoptotic neutrophils.
Increase leucocyte migration, adhesion, chemotaxis
Vasoconstriction
Increased vascular permeability
Decreases leucocyte migration, adhesion, chemotaxis