Vasotocinergic innervation of areas containing aromatase-immunoreactive cells in the quail forebrain
✍ Scribed by Balthazart, Jacques ;Absil, Philippe ;Viglietti-Panzica, Carla ;Panzica, Gian Carlo
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 876 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0022-3034
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✦ Synopsis
In the male quail forebrain, aromaclusters of ARO-ir cells with the exception of those tase-immunoreactive (ARO-ir) elements are clustered located in the nAc were embedded in a dense network within the sexually dimorphic medial preoptic nucleus of VT-ir fibers. Many of the VT-ir terminals appeared (POM), nucleus striae terminalis (nST), nucleus acto end in the neuropile surrounding ARO-ir elements cumbens (nAc), and ventromedial and tuberal hyporather than directly on their cell bodies. This study thalamus. These ARO-ir cells are sensitive to testossupports the idea that the testosterone-dependent terone and its metabolites: Their number and size aromatase system is directly innervated by a testosterincrease after exposure to these steroids. The POM one-dependent peptidergic system. Aromatase-conand lateral septum are also characterized by a dense taining cells could therefore be modulated by steroids vasotocinergic innervation that is also sensitive to tesboth directly and indirectly through the vasotocin systosterone. We analyzed here the anatomical relationtem. Alternatively, this neuroanatomical arrangement ships between ARO-ir elements and VT-ir fibers in may mediate the control of vasotocin synthesis or rethe quail prosencephalon. Sequential staining for valease by steroids. Functional studies demonstrate that sotocin, aromatase, or vasotocin plus aromatase was both aromatase and vasotocin affect reproductive beperformed on adjacent 30-mm-thick cryostat sections.
havior in quail, and the present data provide anatomi-High concentrations of thin VT-ir fibers were obcal support for the integration of these effects. ᭧ 1997 served within the POM, nST, lateral septum, periven-