English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/25058
Título

Locomotor deficiencies and aberrant development of subtype-specific GABAergic interneurons caused by an unliganded thyroid hormone receptor alpha1

AutorWallis, Karin; Sjögren, Maria; Morreale de Escobar, Gabriella ; Vennström, Björn
Palabras claveThyroid hormone receptor
Parvalbumin
Calretinin
GABA
Hypothyroid
Interneuron
Locomotion
Fecha de publicación20-feb-2008
EditorSociety for Neuroscience
CitaciónJournal of Neuroscience 28(8): 1904-1915 (2008)
ResumenThyroid hormone (TH) deficiency during development causes severe and permanent neuronal damage, but the primary insult at the tissue level has remained unsolved. We have defined locomotor deficiencies in mice caused by a mutant thyroid hormone receptor alpha1 (TR alpha1) with potent aporeceptor activity attributable to reduced affinity to TH. This allowed identification of distinct functions that required either maternal supply of TH during early embryonic development or sufficient innate levels of hormone during late fetal development. In both instances, continued exposure to high levels of TH after birth and throughout life was needed. The hormonal dependencies correlated with severely delayed appearance of parvalbumin-immunoreactive GABAergic interneurons and increased numbers of calretinin-immunoreactive cells in the neocortex. This resulted in reduced numbers of fast spiking interneurons and defects in cortical network activity. The identification of locomotor deficiencies caused by insufficient supply of TH during fetal/perinatal development and their correlation with subtype-specific interneurons suggest a previously unknown basis for the neuronal consequences of endemic cretinism and untreated congenital hypothyroidism, and specifies TR alpha1 as the receptor isoform mediating these effects.
Descripción12 pages, 8 figures.-- et al.
Versión del editorhttp://dx.doi.org/10.1523/JNEUROSCI.5163-07.2008
URIhttp://hdl.handle.net/10261/25058
DOI10.1523/JNEUROSCI.5163-07.2008
ISSN0270-6474
Aparece en las colecciones: (IIBM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
GABAergic.pdf859,55 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.