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- For Pain Patients and Professionals
While dipyrone is a widely used analgesic, its mechanism of action is not completely understood. Recently we have reported that the dipyrone metabolite 4-aminoantipirine (4-AA) reduces prostaglandin E (PGE )-induced pain-related behaviour through the cannabinoid type 1 (CB1) receptor. Here, we ascertained, in naive and PGE -induced "inflamed" conditions, both in vivo and in vitro, the molecular mechanisms involved in the 4-AA-induced analgesic effects.