Linked Life Data

20138232

Source:http://linkedlifedata.com/resource/pubmed/id/20138232

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-4-5
pubmed:abstractText
Male and female teleost seabream (Pagrus major) were examined for seasonal variation of eumelanin, pheomelanin, 11-ketotestosterone (11KT, fish androgen), lightness (L* value) and Gonad Somatic Index (GSI: gonad mass/body massx100). In males, levels of pyrrole-2,3,5-tricarboxylic acid (a marker of eumelanin), 11KT and the GSI increased sharply from September and plateaued in March and April when the fish are sexually mature. These results are consistent with the lightness of their body color. Using the data from males, a high correlation was observed for all combinations of those four variables (PTCA, 11KT, lightness and GSI). In females, little change was observed in those variables except for the GSI. 4-Amino-3-hydroxyphenylalanine (a marker of pheomelanin) was also analyzed, but it was below the detection limit at all times. Oral treatment of juvenile red seabream with synthetic androgen methyl-testosterone for 2 months induced eumelanin accumulation about 3 times higher than the control. These data show that there is a close relationship between androgen levels and eumelanin accumulation in teleosts. This is the first report that androgen affects melanin accumulation in a dose-dependent manner.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1531-4332
pubmed:author
pubmed:copyrightInfo
Copyright 2010 Elsevier Inc. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
156
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
184-9
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
A close relationship between androgen levels and eumelanogenesis in the teleost red seabream (Pagrus major): Quantitative analysis of its seasonal variation and effects of oral treatment with methyl-testosterone.
pubmed:affiliation
Fisheries Laboratory, Kinki University, Shirahama, Wakayama, 3153, Japan. kohsukeadachi@kochi-u.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't