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Multiple amygdaloid divisions of arcopallium send convergent projections to the nucleus accumbens and neighboring subpallial amygdala regions in the domestic chicken: a selective pathway tracing and reconstruction study

Hanics, János ; Teleki, Gyöngyi ; Alpár, Alán ; Székely, Andrea D. ; Csillag, András

Brain Structure and Function, 2017-01, Vol.222 (1), p.301-315 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Multiple amygdaloid divisions of arcopallium send convergent projections to the nucleus accumbens and neighboring subpallial amygdala regions in the domestic chicken: a selective pathway tracing and reconstruction study
Autor: Hanics, János ; Teleki, Gyöngyi ; Alpár, Alán ; Székely, Andrea D. ; Csillag, András
Assuntos: Amygdala - cytology ; Amygdala - metabolism ; Animals ; Avian Proteins - metabolism ; Basal Forebrain - cytology ; Basal Forebrain - metabolism ; Biomedical and Life Sciences ; Biomedicine ; Brain research ; Calbindin 2 - metabolism ; Calbindins - metabolism ; Cell Biology ; Chickens ; Dopamine ; Dopamine and cAMP-Regulated Phosphoprotein 32 - metabolism ; Imaging, Three-Dimensional ; Neural Pathways - cytology ; Neural Pathways - metabolism ; Neuroanatomical Tract-Tracing Techniques ; Neurology ; Neurosciences ; Nucleus Accumbens - cytology ; Nucleus Accumbens - metabolism ; Original ; Original Article ; Parvalbumins - metabolism ; Poultry ; Prosencephalon - cytology ; Prosencephalon - metabolism ; Proteins ; Septal Nuclei - cytology ; Septal Nuclei - metabolism
É parte de: Brain Structure and Function, 2017-01, Vol.222 (1), p.301-315
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Retrograde tracing with choleratoxin B, injected into the nucleus accumbens (Ac) and bed nucleus of stria terminalis, lateral part (BSTL), yielded labeled perikarya in a ring-shaped area of arcopallium, including dorsal and hilar subdivisions, with a wedge-shaped node of dense accumulation in the amygdalopiriform area (APir). Also, the position of source neurons for this arcopallio-subpallial pathway was verified by anterograde tracing. Three subregions of arcopallium (amygdalopiriform, dorsal, hilar) were injected with dextran (10 kDa), and fibers and terminal fields were detected in Ac, BSTL and extended amygdala (EA). Most abundant projections to Ac arose from APir. The study enabled precise description of the main output fiber streams: the dorsal stream follows the dorsal border of arcopallium and, continuing in the ventral amygdalofugal tract, it traverses the EA and the BSTL before reaching the Ac. The ventral stream of fibers enters the EA along the ventral subpallial border and terminates in the basal nucleus and ventral pallidum. The course of the pathway was reconstructed in 3D. Retrogradely labeled arcopallial neurons were devoid of DARPP-32. DARPP-32 was present in the Ac but not the BSTL. No colocalization between the calcium binding proteins calbindin, parvalbumin and calretinin, and retrogradely labeled neurons was detected, despite a considerable territorial overlap. This finding further supports the excitatory nature of the arcopallial-accumbens pathway. Conjoint and convergent amygdalar input to EA, including BSTL, as well as to Ac subregions likely transmits fear and aggression related signals to both viscerolimbic (EA) and learned reward- and motivation-related (Ac) ventrobasal forebrain regions.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Multiple amygdaloid divisions of arcopallium send convergent projections to the nucleus accumbens and neighboring subpallial amygdala regions in the domestic chicken: a selective pathway tracing and reconstruction study

Hanics, János ; Teleki, Gyöngyi ; Alpár, Alán ; Székely, Andrea D. ; Csillag, András

Berlin/Heidelberg: Springer Berlin Heidelberg

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