• Neuroscience letters · Nov 2002

    Comparative Study

    Protective effects of the 5-HT1A receptor agonist 8-hydroxy-2-(di-n-propylamino)tetralin against traumatic brain injury-induced cognitive deficits and neuropathology in adult male rats.

    • Anthony E Kline, Jianyun Yu, Jaime L Massucci, Ross D Zafonte, and C Edward Dixon.
    • Department of Physical Medicine and Rehabilitation, 201 Lillian Kaufmann Building, University of Pittsburgh, Pittsburgh, PA 15260, USA. lineae@msx.upmc.edu
    • Neurosci. Lett. 2002 Nov 29; 333 (3): 179-82.

    AbstractTo further investigate the efficacy of 5-HT(1A) receptor agonism on functional and histological outcome in traumatically-brain injured (TBI) rats, a single intraperitoneal injection of 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT; 0.1, 0.5, or 1.0 mg/kg) or vehicle was given 15 min after controlled cortical impact or sham injury. Function was assessed by established motor and cognitive tests on post-operative days 1-5 and 14-18, respectively. Cortical lesion volume and hippocampal CA(1)/CA(3) cell survival were quantified at 4 weeks. The administration of 8-OH-DPAT (0.5 mg/kg) attenuated spatial acquisition deficits and reduced hippocampal CA(3) cell loss vs. vehicle (P < 0.05). These data augment published reports that 5-HT(1A) receptor agonists confer neuroprotective effects after experimental TBI.Copyright 2002 Elsevier Science Ireland Ltd.

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