Parenteral antioxidant treatment preserves temporal discrimination following intrahippocampal aggregated A beta((1-42)) injections

DG McDaid, Eun-Mee Kim, RE Reid, Julian Leslie, J Cleary, E O'Hare

Research output: Contribution to journalArticle


There is evidence that oxidative stress may play a role in the neuropathology of Alzheimer's disease (AD). This study used an aggregated beta-amyloid (A beta) injection model of AD in the rat, and a recycling conjunctive schedule of food reinforcement to examine the effects of bilateral intrahippocampal injections of aggregated A beta((1-42)) (5.0 mu l/side) on temporal discrimination, and the efficacy of the antioxidant alpha-tocopherol (150 mg/kg daily p.o.) in alleviating these effects. The results indicated that bilateral intrahippocampal injections of aggregated A beta((1-42)) detrimentally affected temporal discrimination from five-day block 31-35 post-injections until the end of the study (90 days post-injections). Daily treatment with alpha-tocopherol improved temporal discrimination under the recycling conjunctive schedule following aggregated A beta((1-42)) injections from the five-day block 61-65 days until the end of the study.
Original languageEnglish
Pages (from-to)237-242
JournalBehavioural Pharmacology
Issue number4
Publication statusPublished - Jul 2005


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