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lipoxin
Lipoxin refers to a specific class of bioactive lipids that signal the resolution of inflammation. Unlike pro-inflammatory mediators that initiate the immune response, lipoxins act as "stop signals" to prevent excessive tissue damage and promote the return to homeostasis.
In a clinical or biochemical context, this term is used with high precision to describe endogenous molecules. Because it describes a chemical family, it is typically treated as an uncountable mass noun when referring to the substance in general, though it can be countable when referring to specific types or molecular structures (e.g., lipoxin A4 and B4).
Meanings
A family of endogenous lipid mediators derived from arachidonic acid that act as potent anti-inflammatory and pro-resolving agents in the body.
The administration of lipoxin A4 helps to reduce neutrophil infiltration at the site of inflammation.