Implications of the imidazoline system in the human brain
The imidazoline system is formed by the imidazoline receptors I1, I2 and I3 and the natural competitive agonists that have been identified in the human and animal body: agmatine, harman, harmalan and imidazole-4-acetic acid-ribotide. I1 and I3 receptors are located in the cell membrane.