Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2009-4-14
pubmed:abstractText
The morphology of dendrites constrains and reflects the nature of synaptic inputs to neurons. The visual system has served as a useful model to show how visual function is determined by the arborization patterns of neuronal processes. In retina, light ON and light OFF responding ganglion cells selectively elaborate their dendritic arbors in distinct sublamina, where they receive, respectively, inputs from ON and OFF bipolar cells. During neonatal maturation, the bilaminarly distributed dendritic arbors of ON-OFF retinal ganglion cells (RGCs) are refined to more narrowly localized monolaminar structures characteristic of ON or OFF RGCs. Recently, brain-derived neurotrophic factor (BDNF) has been shown to regulate this laminar refinement, and to enhance the development of dendritic branches selectively of ON RGCs. Although other related neurotrophins are known to regulate neuronal process formation in the central nervous system, little is known about their action in maturing retina. Here, we report that overexpression of neurotrophin-3 (NT-3) in the eye accelerates RGC laminar refinement before eye opening. Furthermore, NT-3 overexpression increases dendritic branch number but reduces dendritic elongation preferentially in ON-OFF RGCs, a process that also occurs before eye opening. NT-3 overexpression does affect dendritic maturation in ON RGCs, but to a much less degree. Taken together, our results suggest that NT-3 and BDNF exhibit overlapping effects in laminar refinement but distinct RGC-cell-type specific effects in shaping dendritic arborization during postnatal development.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-10202541, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-10395576, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-10549663, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-10625670, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-10632603, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-10888735, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-11086982, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-11173250, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-11252990, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-11520916, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-11877382, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-12209831, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-12676795, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-12824273, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-12848934, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-15329888, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-15389605, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-15486768, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-15558785, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-17406670, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-17492624, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-17570502, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-17611278, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-18615559, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-18925574, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-2469928, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-2496154, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-3367208, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-7623109, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-7623126, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-7786843, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-8106655, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-8248179, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-8750972, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-8821453, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-8876243, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-9108199, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-9182801, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-9405689, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-9560464, http://linkedlifedata.com/resource/pubmed/commentcorrection/19350645-9728914
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1096-9861
pubmed:author
pubmed:issnType
Electronic
pubmed:day
10
pubmed:volume
514
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
449-58
pubmed:dateRevised
2011-5-4
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Regulation of neonatal development of retinal ganglion cell dendrites by neurotrophin-3 overexpression.
pubmed:affiliation
Department of Neurobiology and Physiology, Northwestern University, Evanston, Illinois 60208, USA. cope@phy.ucsf.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural