[gamma-Glutamyltransferase activity of different sections of the vertebrate brain]

The activity of gamma-glutamyl transferase (GGTF; EC 2.3.2.2) has been measured in the cerebral hemispheres, cerebellum, hippocamp and brain stem of mature wild and laboratory rodents (Oryctolagus cuniculus, Cavia porcellus, Rattus norvegicus, var. alb., Ochotona pusilla, Mesocricetus auratus, Clethrionimus glareolis, Mus musculus. var. alb.), as well as in homogenates of the whole brain of the tortoise Testudo horsfieldi, frog Rana temporaria and loach Misgurnus fossilis. In wild rodents the activity of GGTF was found to be higher than in laboratory ones. GGTF activity in the brain of warm-blooded animals is higher than that in the brain of the tortoise, frog and loach.