| Literature DB >> 10854726 |
Y J Ho1, Y C Chang, T M Liu, M Y Tai, C S Wong, Y F Tsai.
Abstract
Striatal glutamate release during novelty exposure-induced hyperactivity was studied by microdialysis in freely-moving olfactory bulbectomized (OBX) rats. After collecting three 10 min basal striatal dialysate samples, the animals were transferred to an open-field apparatus (novelty) and locomotor activity recorded for 60 min. OBX rats showed significantly more locomotor activity (1210+/-270 cm) than sham-operated rats (420+/-70 cm), but only in the first 10 min after exposure to the novel environment. During the same period, striatal glutamate levels increased to 163+/-21% of the basal value in OBX rats, while no changes were seen in the striatum of sham-operated controls. These findings suggest that olfactory bulbectomy results in an increased response of the striatal glutamatergic system to novelty stress, and may consequently cause hyperactivity.Entities:
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Year: 2000 PMID: 10854726 DOI: 10.1016/s0304-3940(00)01152-6
Source DB: PubMed Journal: Neurosci Lett ISSN: 0304-3940 Impact factor: 3.046