IFIBYNE   05513
INSTITUTO DE FISIOLOGIA, BIOLOGIA MOLECULAR Y NEUROCIENCIAS
Unidad Ejecutora - UE
artículos
Título:
NEOSTRIATAL CYTOSKELETON CHANGES FOLLOWING PERINATAL ASPHYXIA. EFFECT OF HYPOTHERMIA TREATMENT.
Autor/es:
ELISA CEBRAL, FRANCISCO CAPANI, ASIA SELVÍN-TESTA, MANUEL REY FUNES, HÉCTOR COIRINI, C. AND C. FABIÁN LOIDL.
Revista:
THE INTERNATIONAL JOURNAL OF NEUROSCIENCE.
Editorial:
Taylor & Francis, Inc
Referencias:
Lugar: Philadelphia; Año: 2006 vol. 116 p. 697 - 714
ISSN:
0020-7454
Resumen:
Long term changes of different types of neurofilaments (NF) and glial fibrilar acid protein (GFAP) were studied in neostriatal rat subjected to perinatal asphyxia (PA) under normothermic and hypothermic (15°C) conditions, using immunohistochemistry for light and electron microscopy. Neostriatal neurons of six month-old rats that were subjected to 19 and 20 min of PA, showed  an increase of NF 200 kDa immunostaining mainly in the axon fascicles in comparison with the control and hypothermia groups. In contrast, no alterations were seen with NF68 and NF160 neurofilament antibodies. Furthermore, the same PA groups showed astroglial cells with enhanced GFAP immunoreactivity, evidencing a typical astroglial reaction with a clear hypertrophy of these cells. A quantitative image analysis confirmed these observations. Hypothermic treated animals did show neither astroglial nor neuronal cytoskeletal changes in comparison to the control group. These findings showed that PA produces chronic cytoskeletal alterations in the neostriatum cells that can be prevented by hypothermia.