1H COSY spectra of superfused brain slices of rat: ex vivo direct assignment of resonances.

Realization of 1D 1H spectra of superfused brain slices of rats is described. Two-dimensional 1H-1H COSY spectra have been used for the direct assignment of resonances on living tissue (lactate, GABA, N-acetyl aspartate, aspartate, glutamine/glutamate, creatine/phosphocreatine, taurine, inositol, choline/ethanolamine). Utilization of the SUPERCOSY sequence permits simultaneously the enhancement of off-diagonal signals for small metabolites and the reduction of the signals for water and macromolecules.