Selective loss of expression of glutamate GluR2/R3 receptor subunits in cerebellar tissue from a patient with olivopontocerebellar atrophy


Autoria(s): Dirson, G; Desjardins, P; Tannenberg, T; Dodd, P; Butterworth, RF
Data(s)

01/01/2002

Resumo

Expression of the mRNAs encoding the astrocytic (EAAT1, EAAT2) and neuronal (EAAT3, EAAT4) excitatory amino acid transporters and the AMPA-type glutamate receptor subunits GluR2 and GluR3 was investigated in postmortem cerebellar extracts from a patient with olivopontocerebellar atrophy (OPCA) and in material from three age-matched controls. Decreased expression in the steady state level of EAAT4 mRNA in the OPCA sample was correlated with the selective loss of Purkinje cells. Neuropathological evaluation revealed reactive gliosis and concomitantly increased expression of the mRNA encoding astrocytic glial fibrillary acidic protein (GFAP). Expression of the mRNAs encoding the AMPA receptor subunits GluR2 and GluR3 subunits was found to be decreased in OPCA suggesting that excitotoxic mechanism could play a role in the pathogenesis of the selective neuronal cell death in this disorder.

Identificador

http://espace.library.uq.edu.au/view/UQ:61665

Idioma(s)

eng

Publicador

Kluwer/Plenum

Palavras-Chave #Endocrinology & Metabolism #Neurosciences #Olivopontocerebellar Atrophy #Multiple-system Atrophy #Glutamate #Glutamate Receptors #Purkinje Cells #Gated Chloride Channel #Transporter Glt-1 #Rat-brain #Disorders #Proteins #Cloning #Cortex #C1 #321020 Pathology #730104 Nervous system and disorders
Tipo

Journal Article