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Central amygdala circuitry modulates nociceptive processing through differential hierarchical interaction with affective network dynamics.

ABSTRACT: The central amygdala (CE) emerges as a critical node for affective processing. However, how CE local circuitry interacts with brain wide affective states is yet uncharted. Using basic nociception as proxy, we find that gene expression suggests diverging roles of the two major CE neuronal populations, protein kinase C δ-expressing (PKCδ⁺) and somatostatin-expressing (SST⁺) cells. Optogenetic (o)fMRI demonstrates that PKCδ⁺/SST⁺ circuits engage specific separable functional subnetworks to modulate global brain dynamics by a differential bottom-up vs. top-down hierarchical mesoscale mechanism. This diverging modulation impacts on nocifensive behavior and may underly CE control of affective processing.

SUBMITTER: Wank I

PROVIDER: S-EPMC8203648 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Central amygdala circuitry modulates nociceptive processing through differential hierarchical interaction with affective network dynamics.

Wank Isabel I Pliota Pinelopi P Badurek Sylvia S Kraitsy Klaus K Kaczanowska Joanna J Griessner Johannes J Kreitz Silke S Hess Andreas A Haubensak Wulf W

Communications biology 20210614 1

The central amygdala (CE) emerges as a critical node for affective processing. However, how CE local circuitry interacts with brain wide affective states is yet uncharted. Using basic nociception as proxy, we find that gene expression suggests diverging roles of the two major CE neuronal populations, protein kinase C δ-expressing (PKCδ+) and somatostatin-expressing (SST+) cells. Optogenetic (o)fMRI demonstrates that PKCδ+/SST+ circuits engage specific ...[more]

PMID: 34127787

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