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Imidazoline receptor ligands act on the I1, I2 and I3 binding sites for imidazoline compounds. Imidazoline receptors were proposed when clonidine-like compounds were found to lower blood pressure through brainstem sites distinct from α2-adrenergic receptors. I1 sites take part in central blood pressure control, and I2 sites are linked to monoamine oxidase. I3 sites in pancreatic β cells are involved in the regulation of insulin secretion. Moxonidine hydrochloride and rilmenidine phosphate are listed as I1 agonists, and AGN 192403 as an I1 antagonist. Idazoxan hydrochloride blocks α2-adrenergic receptors and binds I2 sites, as does BU226 hydrochloride, while KU14R is an I3 antagonist. Clonidine hydrochloride and guanabenz acetate act mainly at α2-adrenergic receptors and are also listed under Adrenergic Receptors.
Synonyms: (+/-)-Idazoxan Monohydrochloride; RX 781094; RX 781094A
Idazoxan hydrochloride is an α2-AR adrenoceptor antagonist and potential I2 imidazoline receptor agonist. Also displays I1 imidazoline receptor antagonist activity. (pKi values are 5.90, 7.22, 8.01, 7.43, and 7.7 for I1, I2, α 2A, α2B, and α 2C receptors respectively).
KU14R is an antagonist of the pancreatic β-cell atypical imidazoline binding site (putative I3 receptor). KU14R has also been shown to selectively block efaroxan-induced insulin secretion.
Synonyms: BRD4780 hydrochloride
AGN 192403 hydrochloride is a potent and selective antagonist of the imidazoline-1 receptor, exhibiting a Ki value of 42 nM. This compound functions as a TMED9 inhibitor and demonstrates protective effects against oxidative and mitochondrial inhibitor-induced cytotoxicity in astrocytes. Additionally, AGN 192403 hydrochloride reduces the proliferation and migration of differentiated glioma tumor cells, making it a valuable tool for research related to glioma tumors and various neurological diseases.
Synonyms: BRD4780
AGN 192403 is a potent and selective imidazoline-1 receptor antagonist with a Ki value of 42 nM. This compound also acts as a TMED9 inhibitor and demonstrates protective effects against oxidative and mitochondrial inhibitor-induced cytotoxicity in astrocytes. Additionally, AGN 192403 inhibits the proliferation and migration of differentiated glioma tumor cells. It is a valuable reagent for research related to glioma tumors and various neurological diseases.
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