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Distribution of sex steroid hormone receptors in the avian brain: Functional implications for neural sex differences and sexual behaviors
Microscopy research and technique, 2001-10, Vol.55 (1), p.1-11
Gahr, Manfred
2001
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Gahr, Manfred
Titel
Distribution of sex steroid hormone receptors in the avian brain: Functional implications for neural sex differences and sexual behaviors
Ist Teil von
Microscopy research and technique, 2001-10, Vol.55 (1), p.1-11
Ort / Verlag
New York: John Wiley & Sons, Inc
Erscheinungsjahr
2001
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
Developmental and seasonal changes in the production of androgens, estrogens, and progestins seem to control sex‐specific differentiation and seasonal changes in appetitive and consummatory sexual behaviors of birds. This results in profound sex differences in the quality (sex‐specific) or quantity (sex‐typical) of behaviors such as courtship, territoriality, or copulation. Steroids affect the brain by binding to intracellularly located receptors. The same brain areas express androgen, estrogen, and progesterone receptors in male and female brains. Sex differences in these genetically determined patterns occur in the size of neuron populations that intrinsically express sex steroid receptors. Further permanent sex differences are subsequent to degenerative fates of receptor expressing neuron populations during ontogeny. Transient sex differences in receptor expression appear to be due to area‐specific up‐ and down‐regulation of receptor levels, reflecting transient changes in the level of circulating steroids, changes in environmental conditions, or in the physiological status of the individuals. In particular, intrinsic sex differences in the expression pattern of sex steroid receptors and steroid‐independent regulation of the expression level of these receptors in the brain are limiting mechanisms for gonad‐dependent sexual development and activities. Microsc. Res. Tech. 55:1–11, 2001. © 2001 Wiley‐Liss, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 1059-910X
eISSN: 1097-0029
DOI: 10.1002/jemt.1151
Titel-ID: cdi_proquest_miscellaneous_72192807
Format
–
Schlagworte
androgen receptors
,
Animals
,
Birds - physiology
,
Brain - metabolism
,
developmental changes
,
dynamic expression
,
estrogen receptors
,
Female
,
Male
,
progesterone receptors
,
Receptors, Steroid - metabolism
,
seasonal changes
,
Sex Characteristics
,
Sexual Behavior, Animal
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