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Medicina Clínica
Article . 2011 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Estudio clínico y molecular de cinco familias con resistencia a la acción de las hormonas tiroideas

Authors: Lado Abeal, José Joaquín; Albero Gamboa, Ramón; Araujo-Vilar, David; Barca Mayo, Olga; Bernabeu Moron, Ignacio; Calvo, María Teresa; Castro Piedras, Isabel; +5 Authors

Estudio clínico y molecular de cinco familias con resistencia a la acción de las hormonas tiroideas

Abstract

Fundamento y objetivo La resistencia a la acción de las hormonas tiroideas (SRHT) es un síndrome causado mayoritariamente por mutaciones en el gen receptor beta de las hormonas tiroideas (THRB). Se estudian cinco familias con fenotipo de SRHT. Pacientes y método Se realizó secuenciación de THRB. Se evaluó la respuesta a triyodotironina (T3) y efecto dominante negativo de los mutantes in vitro y se estudiaron los mecanismos de resistencia en sujetos sin mutación THRB cuantificando en cultivos de fibroblastos cambios de expresión en los genes regulator of calcineurin 2 (ZAKI4) y Kruppel-like factor 9 (BTEB). Resultados Tres casos presentaron mutaciones en THRB: R243Q, R320C, R429Q, dando lugar a receptores TRβ con menor respuesta a T3. R243Q y R320C ejercen efecto dominante negativo. Un sujeto sin mutación THRB presentó cambios de expresión en ZAKI4 y BTEB similar a R230C, mientras que el otro mostró niveles de expresión superiores a los controles. Conclusiones Mutaciones heterocigotas en THRB causaron tres de los casos de SRHT estudiados. Uno de los casos con SRHT sin mutación se comporta a nivel molecular como los portadores de mutación, mientras que en el otro la resistencia no está mediada por TRβ.

Country
Spain
Keywords

Mutación, Hormonas tiroideas, Sindrome de resistencia a la acción de las hormonas tiroideas, 320602 Metabolismo energético, 241104 Fisiología endocrina

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
Green