Linked Life Data

16170538

Source:http://linkedlifedata.com/resource/pubmed/id/16170538

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2005-10-18
pubmed:abstractText
This study provides a detailed light microscopic description of the morphology and distribution of serotonin-immunoreactive axons in the paleocortical retrohippocampal areas, viz. the subiculum, presubiculum, parasubiculum and entorhinal area, and the adjoining neocortical perirhinal and retrosplenial cortices of the New Zealand white rabbit. Serotonergic axons could be segregated into three different fiber types named fine fibers, beaded fibers and stem-axons. Fine fibers were evenly distributed thin axons with small fusiform/granular varicosities. Beaded fibers were thin axons with large varicosities, predominantly located in the retrohippocampal supragranular layers, where they often formed pericellular arrays. Stem-axons were thick straight, nonvaricose axons seen in the white matter of psalterium dorsale, alveus and the plexiform layer. The paleocortical retrohippocampal areas had a dense supragranular innervation with numerous tortuous fine and beaded fibers, intermingled in conglomerates with conspicuous varicosities forming pericellular arrays. In contrast, the neocortical area 17 and the lateral part of the perirhinal cortex (area 36) were innervated by evenly distributed fine fibers with a moderate number of small varicosities and few ramifications, whereas, the retrosplenial cortex (areas 29e, 29ab and 29cd), and the medial part of the perirhinal cortex (area 35) displayed an intermediate innervation pattern, probably reflecting the transitional nature of these areas being located between the paleo- and the neocortex. The described dualistic innervation pattern may functionally enable the serotonergic system to exert a strong influence on the supragranular layers of the retrohippocampal areas and thus on the neural input entering these areas from the perirhinal and neighboring polymodal association neocortices, whereas the innervation pattern in the adjoining neocortical areas points towards a more diffuse and general modulation of neural activity herein.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0340-2061
pubmed:author
pubmed:issnType
Print
pubmed:volume
210
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
199-207
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Distribution and morphology of serotonin-immunoreactive axons in the retrohippocampal areas of the New Zealand white rabbit.
pubmed:affiliation
Department of Neurobiology, Institute of Anatomy, University of Aarhus, 8000 Aarhus C, Denmark. cb@ana.au.dk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't