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Cholinergic ventral forebrain grafts into the neocortex improve passive avoidance memory in a rat model of Alzheimer disease

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TLDR
This work has shown that the memory impairment caused by unilateral lesions of the cholinergic nucleus basalis magnocellularis is reversed by grafts into the deafferented neocortex of embryonic neurons of the Cholinergic ventral forebrain, but not by grafting of noncholinergic hippocampal cells.
Abstract
The memory dysfunction of Alzheimer disease has been associated with a cortical cholinergic deficiency and loss of cholinergic neurons of the nucleus basalis of Meynert. This cholinergic component of Alzheimer disease can be modeled in the rat by ibotenic acid lesions of the cholinergic nucleus basalis magnocellularis. The memory impairment caused by such unilateral lesions, as reflected in passive avoidance behavior, is reversed by grafts into the deafferented neocortex of embryonic neurons of the cholinergic ventral forebrain, but not by grafts of noncholinergic hippocampal cells.

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Journal ArticleDOI

Central cholinergic systems and cognition

TL;DR: Evidence is presented that the nucleus basalis-neocortical cholinergic system contributes greatly to visual attentional function, but not to mnemonic processes per se, and it is suggested that nucleus basali-amygdala cholinerential projections have a role in the retention of affective conditioning while brainstem cholinery projections to the thalamus and midbrain dopamine neurons affect basic arousal processes.
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Alzheimer’s disease and the basal forebrain cholinergic system: relations to β-amyloid peptides, cognition, and treatment strategies

TL;DR: This review will initially discuss recent results indicating a link between cholinergic mechanisms and the pathogenic events that characterize AD, notably amyloid-β peptides, and animal models of dementia will be discussed in light of the relationship between basal forebrain cholinerg hypofunction and cognitive impairments in AD.
Journal ArticleDOI

The Cerebral Cortex of the Rat and Visual Attentional Function: Dissociable Effects of Mediofrontal, Cingulate, Anterior Dorsolateral, and Parietal Cortex Lesions on a Five-Choice Serial Reaction Time Task

TL;DR: The main finding from this paradigm was that lesions of the lateral frontal cortex produced a significant disruption to the retention of passive avoidance, which stands in marked contrast to the successful retention observed by animals of the other lesion groups.
Journal ArticleDOI

Behavioural, biochemical and histochemical effects of different neurotoxic amino acids injected into nucleus basalis magnocellularis of rats

TL;DR: It is concluded that in the absence of availability of a specific cholinergic neurotoxin, quisqualic acid produces less non-specific neuroanatomical and neurological side effects than the more widely used toxins N-methyl-D-aspartate, kainic acid or ibotenic acid.
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