CHPG is a selective agonist of mGluR5. In BV2 microglial cells, it attenuates SO2-induced oxidative stress and inflammation through the TSG-6 NF-κB pathway.
VU0364770 hydrochloride is a potent and selective mGlu4 positive allosteric modulator (PAM) (EC50s: 290 nM and 1.1 μM at rat mGlu4 and human mGlu4 receptor, respectively).