Apolipoprotein E antibodies affect the retention of passive avoidance memory in the chick

Isoforms of apolipoprotein E (ApoE) have been implicated as risk factors in Alzheimer's disease. We have, therefore, examined the possible role of ApoE in memory formation, using a one-trial passive avoidance task in day-old chicks. Birds were trained on the task and then at various times pre o...

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Veröffentlicht in:Neural plasticity. - 1998. - 6(1998), 3 vom: 01. Juli, Seite 29-40
1. Verfasser: Lancashire, C (VerfasserIn)
Weitere Verfasser: Mileusnic, R, Rose, S P
Format: Aufsatz
Sprache:English
Veröffentlicht: 1998
Zugriff auf das übergeordnete Werk:Neural plasticity
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Antibodies Apolipoprotein A-I Apolipoproteins E
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245 1 0 |a Apolipoprotein E antibodies affect the retention of passive avoidance memory in the chick 
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520 |a Isoforms of apolipoprotein E (ApoE) have been implicated as risk factors in Alzheimer's disease. We have, therefore, examined the possible role of ApoE in memory formation, using a one-trial passive avoidance task in day-old chicks. Birds were trained on the task and then at various times pre or post-training were injected intracerebrally with anti-ApoE. Immunofluorescence staining demonstrated the presence of the antibody bound to the neuropil, close to the injection site and adjacent to the ventricle, with a residence time in the brain of up to 30 min. Chicks that were injected 30 min pre-training or just post-training with 5 micrograms/hemisphere of the antibody learned the task, but were amnesic when tested at 30 min or at subsequent times up to 24 hr post-training. When tested at 24 hr, birds injected 5.5 hr post-training showed unimpaired retention. Birds injected with 5 micrograms/hemisphere of anti-ApoA-I (which has a brain distribution similar to that of anti-ApoE) at 30 min pretraining showed no amnesia, indicating the specificity of the effect to the ApoE. Possible mechanisms for this effect are discussed 
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700 1 |a Mileusnic, R  |e verfasserin  |4 aut 
700 1 |a Rose, S P  |e verfasserin  |4 aut 
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