LY379268

LY379268 is a potent, selective and brain-penetrant mGlu2/3R agonist with EC₅₀ values of 2.69 nM (mGlu2) and 4.48 nM (mGlu3). LY379268 has no activity on human mGlu 1a, 4a, 5a or 7a receptors. LY379268 has antioxidant and neuroprotective effects^[1][2]. In Vitro:Treatment of 9-weeks (9w) astrocytes with LY379268 (0.1 μM; 24-48 hours) results in an increase in mGlu3R and Nrf2 protein levels and SOD activity, and decreases mitochondrial ROS levels and apoptosis. mGlu3R activation in aged astrocytes also preventS hippocampal neuronal death induced by Aβ1-42 in co-culture assays. Activation of mGlu3R in aged astrocytes haS an anti-oxidant effect and protected hippocampal neurons against Aβ-induced neurotoxicity^[3]. In Vivo:For LY379268, when a 3 mg/kg dose is given prior to an intraplantar injection of carrageenan, the inflammatory hyperalgesia that developed is significantly delayed, without affecting the inflammation of the paw^[2].
In a model of mouse tail withdrawal to warm water, LY379268 (12 mg/kg; i.p.), given before a subcutaneous tail injection of capsaicin, reduces the subsequent neurogenic hyperalgesia^[2].