||5,7-Dihydroxytryptamine Injections Increase Glial Fibrillary Acidic Protein in the Hypothalamus of Adult Rats.
Frankfurt, M. ;
O'Callaghan, J. ;
Beaudet, A. ;
||Health Effects Research Lab., Research Triangle Park, NC. Neurotoxicology Div. ;Rockefeller Univ., New York. Lab. of Neuroendocrinology. ;Montreal Neurological Inst. (Quebec). Neuroanatomy Lab.
Glial fibrillary acidic protein ;
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The distribution and level of glial fibrillary acidic protein (GFAP) were determined in the adult rat hypothalamus following axotomy of serotonin (5-HT) neurons. Seven days after unilateral intrahypothalamic injection of the 5-HT neurotoxic, 5,7-dihydroxytryptamine, there was a marked increase in the number of GFAP-labelled astrocytes in the ipsilateral hypothalamus of 5,7-DHT-treated as compared to sham-treated rats. Measurement of GFAP levels demonstrated a significant increase on the ipsilateral side of 5,7-DHT-treated rats as compared to sham-treated rats.