Cell type specific impact of cannabinoid receptor signaling in somatosensory barrel map formation in mice.
J Comp Neurol
; 528(1): 3-13, 2020 01 01.
Article
em En
| MEDLINE
| ID: mdl-31226222
ABSTRACT
Endocannabinoids and their receptors are highly abundant in the developing cerebral cortex and play major roles in early developmental processes, for example, neuronal proliferation, migration, and axonal guidance as well as postnatal plasticity. To investigate the role of the cannabinoid type 1 receptor (CB1) in the formation of sensory maps in the cerebral cortex, the topographic representation of the whiskers in the primary somatosensory cortex (barrel field) of adult mice with different cell type specific genetic deletion of CB1 was studied. A constitutive absence of CB1 (CB1-KO) significantly decreased the total area of the somatosensory cortical map, affecting barrel, and septal areas. Cell specific CB1 deletion in dorsal telencephalic glutamatergic neurons only (Glu-CB1-KO) or in both glutamatergic and forebrain GABAergic neurons (Glu/GABA-CB1-KO) resulted in an increased septa area in the barrel field map. No significant modifications in area parameters could be observed in GABA-CB1-KO mice. These data demonstrate that CB1 signaling especially in cortical glutamatergic neurons is essential for the development of topographic maps in the cerebral cortex.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Córtex Somatossensorial
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Mapeamento Encefálico
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Transdução de Sinais
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Receptor CB1 de Canabinoide
Limite:
Animals
Idioma:
En
Revista:
J Comp Neurol
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Alemanha