Document Detail

Sexual versus individual differentiation: the controversial role of avian maternal hormones.
MedLine Citation:
PMID:  17276694     Owner:  NLM     Status:  MEDLINE    
Avian embryos are exposed not only to endogenous sex steroids, which are produced by their gonads and have a key role in sexual differentiation, but also to maternal steroids transferred into the egg yolk, which can modulate the development of individual differences in behavior. Studies of maternal hormones have primarily focused on ultimate questions (evolutionary trade-offs, functional significance), whereas proximate mechanistic questions have been largely ignored. A central problem that must be addressed is how exposure to maternal hormones affects the individual phenotype without interfering with sexual differentiation. Separate effects could result from the action of different hormones, at different doses or at different times, on different targets.
Claudio Carere; Jacques Balthazart
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Review     Date:  2007-02-05
Journal Detail:
Title:  Trends in endocrinology and metabolism: TEM     Volume:  18     ISSN:  1043-2760     ISO Abbreviation:  Trends Endocrinol. Metab.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-02-26     Completed Date:  2007-05-11     Revised Date:  2007-12-03    
Medline Journal Info:
Nlm Unique ID:  9001516     Medline TA:  Trends Endocrinol Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  73-80     Citation Subset:  IM    
Section of Behavioural Neurosciences, Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome, Italy.
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MeSH Terms
Birds / embryology*
Embryo, Nonmammalian
Embryonic Induction / physiology*
Gonadal Steroid Hormones / physiology*
Models, Biological
Oviparity / physiology
Sex Differentiation / physiology*
Grant Support
Reg. No./Substance:
0/Gonadal Steroid Hormones

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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