1-Aminocyclopropane-1-carboxylic acid

1-Aminocyclopropane-1-carboxylic acid is an endogenous metabolite. In the presence of low concentrations (1 μM) of glutamate, 1-Aminocyclopropane-1-carboxylic acid acts as a small molecule agonist of NMDA receptors with an EC50 of 0.7-0.9 μM. At high concentrations (10 μM) of glutamate, 1-Aminocyclopropane-1-carboxylic acid acts as a competitive antagonist of NMDA receptors with an EC50 of 81.6 nM. 1-Aminocyclopropane-1-carboxylic acid exerts neuroprotective activity by moderately activating NMDA receptors to prevent neuronal cell death in ischemic animal models. Additionally, 1-Aminocyclopropane-1-carboxylic acid is an antagonist of NMDA receptors, inducing blood pressure reduction and antioxidant effects in stroke-prone hypertensive rats. 1-Aminocyclopropane-1-carboxylic acid enhances object recognition memory and cognitive flexibility dependent on the prefrontal cortex, but does not affect impulsivity nor exhibit an antipsychotic-like profile. 1-Aminocyclopropane-1-carboxylic acid shows promise for research in the field of neurotoxicity.^[1][2][3]. In Vivo:1-Aminocyclopropane-1-carboxylic acid (50mg/kg, i.p.,once a day for 10 days) induces the expression of HO-1, which exerts antioxidant and vascular relaxation effects, thereby suggesting that 1-Aminocyclopropane-1-carboxylic acid normalizes blood pressure elevation and reduces stroke mortality in stroke-prone spontaneously hypertensive rats^[3].