Functional consequences of hippocampal neuronal ectopia in the apolipoprotein E receptor-2 knockout mouse.

ABSTRACT: Little is known about the impact ectopically located neurons have on the functional connectivity of local circuits. The ApoER2 knockout mouse has subtle cytoarchitectural disruptions, altered prepulse inhibition, and memory abnormalities. We evaluated this mouse mutant as a model to study the role ectopic neurons play in the manifestation of symptoms associated with brain diseases. We found that ectopic CA1 pyramidal and inhibitory neurons in the ApoER2 knockout hippocampus are organized into two distinct stratum pyramidale layers. In vitro analyses found that ApoER2 is not required for neurons to reach maturity in regard to dendritic arborization and synaptic structure density, and electrophysiological testing determined that neurons in both strata pyramidale are integrated into the hippo

SUBMITTER: Fish KN 

PROVIDER: S-EPMC2740935 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature