- Characterization of the anticonvulsant and neuroprotectant BIIR 561 CL in vitro: effects on native and recombinant alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors. Weiser, T., Iizuka, M., Nishimura, S., Akiba, I., Barsoumian, E., Zhou, M., Steinhäuser, C., Brenner, M., Palluk, R., Wienrich, M. Naunyn Schmiedebergs Arch. Pharmacol. (2000)