|Reference : Synergistic Control by Androgens and Estrogens of Aromatase in the Quail Brain|
|Scientific journals : Article|
|Life sciences : Zoology|
Social & behavioral sciences, psychology : Neurosciences & behavior
|Synergistic Control by Androgens and Estrogens of Aromatase in the Quail Brain|
|Balthazart, Jacques [Université de Liège - ULg > Département des sciences biomédicales et précliniques > Biologie de la différenciation sexuelle du cerveau >]|
|Stoop, R. [> > > >]|
|Foidart, Agnès [Université de Liège - ULg > Services généraux (Faculté de médecine) > Service administratif de la Faculté (Médecine) >]|
|Harada, N. [> > > >]|
|[en] Castrated quail were injected with testosterone or with the synthetic hormones diethylstilbestrol (DES) or methyltrienolone (R1881) to analyse the steroid specificity in the induction of brain aromatase. R1881 produced a moderate (generally non-significant) increase in the number of aromatase-immunoreactive cells. DES significantly increased the number of positive cells in most brain areas. A clear synergism between DES and R1881 was observed in all brain regions: more immunoreactive cells were found in birds receiving both compounds than in those injected with DES or R1881 alone. DES and R1881 are highly specific ligands for oestrogen and androgen receptors respectively. It appears likely that both androgens and oestrogens directly modulate brain aromatase, presumably at the transcription level.|
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