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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2005-10-24
pubmed:abstractText
Using in situ hybridization to detect the expression of the retinoic acid synthesizing enzyme (retinaldehyde dehydrogenase: zRalDH) mRNA, we mapped the distribution of its expression in adult zebra finch brain. In the neural song circuit, strong expression was found in high vocal center (HVC), para-HVC, and at a very low level in the robust nucleus of the arcopallium (RA). The expression in HVC and RA was found in both males and females. Outside of the song system, major areas of expression were in medial nidopallium (N), hyperpallium apicale (HA), mesopallium ventrale (MV), taenial amygdala (TnA), cerebellar Purkinje cells, and nucleus isthmo-opticus (IO). In nestlings, we found zRalDH mRNA expression in HVC and RA as early as posthatch day 4 or 5 (P4-5), although the expression varied among individuals. Thus, retinoic acid synthesis in HVC and RA could participate in song system formation and development. However, we found no sex difference in volume or intensity of zRalDH and androgen receptor (AR) expression in HVC and RA at P11 prior to the development of significant size dimorphisms in these nuclei. The size of HVC in females at P11 defined by zRalDH expression was greater than that in adult females, suggesting that HVC might experience net cell loss between P11 and adulthood.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-3034
pubmed:author
pubmed:issnType
Print
pubmed:volume
65
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
260-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Distribution and onset of retinaldehyde dehydrogenase (zRalDH) expression in zebra finch brain: lack of sex difference in HVC and RA at early posthatch ages.
pubmed:affiliation
Department of Physiological Science and Laboratory of Neuroendocrinology of the Brain Research Institute, University of California, Los Angeles, 621 Charles E. Young Drive South, Room 4117, 90095-1606, USA. yhkim11@ucla.edu
pubmed:publicationType
Journal Article, Comparative Study, Research Support, N.I.H., Extramural