Apafant is primarily used in research settings as a selective antagonist for platelet-activating factor (PAF) receptors. It is instrumental in studying the role of PAF in various physiological and pathological processes, such as inflammation, allergic reactions, and cardiovascular diseases. By blocking PAF receptors, Apafant helps researchers understand the mechanisms underlying these conditions and evaluate potential therapeutic interventions. Its application is particularly relevant in experimental models to assess the impact of PAF inhibition on immune responses and tissue damage.