“The non-selective nitric oxide synthase (NOS) inhibitor N-nitro-l-arginine methyl ester (L-NAME; 100 microM and 1.0 mM) increased extracellular taurine in a concentration-dependent manner while 7-nitroindazole (7-NI), a relatively selective neuronal NOS (nNOS) inhibitor, at the same concentrations decreased extracellular taurine.”