Por favor, use este identificador para citar o enlazar este Item:http://hdl.handle.net/20.500.12105/7228
Título
Differential Patterns of Subcortical Activity Evoked by Glial GLT-1 Blockade in Prelimbic and Infralimbic Cortex: Relationship to Antidepressant-Like Effects in Rats
Autor(es)
Fecha de publicación
2017
Cita
Int J Neuropsychopharmacol. 2017; 20(12):988-993
Idioma
Inglés
Tipo de documento
journal article
Resumen
Background: Glutamatergic neurotransmission has emerged as a novel target in antidepressant drug development, with a critical role of the ventral anterior cingulate cortex. We recently reported that blockade of the astrocytic glutamate transporter GLT-1 with dihydrokainic acid in infralimbic cortex (rodent equivalent of ventral anterior cingulate cortex), but not in the adjacent prelimbic cortex, evoked robust antidepressant-like effects through α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor activation and increased serotonin release. Methods: 2-deoxy-2-[18F]-fluoro-D-glucose-positron emission tomography and computed tomography in 36 male Wistar rats microinfused bilaterally in prelimbic cortex or infralimbic cortex with dihydrokainic acid or vehicle. Results: Dihydrokainic acid microinfusion in infralimbic cortex and prelimbic cortex evoked dramatically different regional patterns of subcortical activity. In infralimbic cortex, dihydrokainic acid selectively affected midbrain areas, whereas in prelimbic cortex it affected the basal ganglia, the thalamus, and both superior and inferior colliculi. Conclusions: These results highlight the differential connectivity of infralimbic and prelimbic cortex with subcortical brain regions and support the involvement of infralimbic cortex-midbrain pathway in the antidepressant-like effects of dihydrokainic acid.
Palabras clave
MESH
Animals | Brain Mapping | Cerebral Cortex | Excitatory Amino Acid Agonists | Excitatory Amino Acid Transporter 2 | Fluorodeoxyglucose F18 | Kainic Acid | Male | Neural Pathways | Positron-Emission Tomography | Rats | Rats, Wistar | Tomography Scanners, X-Ray Computed
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