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- W4387394522 abstract "Thyroid hormone (TH) action is essential during the development of the central nervous system, including the cerebellum. In case of TH deficiency in early life such as congenital hypothyroidism, patients display neurological disorders such as cognitive retardation and motor deficits. There are various studies using mouse models with tissue- or cell-specific TH deficiency to investigate the role of TH in the cerebellum. Compared to generalized congenital hypothyroid mice, cerebellar cell-specific TH-deficient mice display milder and subtler ataxic features, making the assessment of motor function difficult when using conventional tests such as the rotarod test. Due to the need for an alternative tool to assess motor function in TH-related animal models, we developed a versatile behavioral method called the ladder beam test, in which we can design the various ladder tests depending on the severity of ataxia in model mice. We utilized transgenic mice expressing a dominant-negative TH receptor specifically in the cerebellar Purkinje cell, a sole output neuron in the cerebellar cortex modulating motor performance. The newly-built ladder beam test successfully detected robust impairments in motor performance in the transgenic mice at a greater level compared to the rotarod test. Disruption of motor learning was also detected in the ladder beam test but not in the rotarod test. The protocol with this novel behavioral apparatus can be applied to other animal models that may show mild ataxic phenotype to examine subtle changes in cerebellar function." @default.
- W4387394522 created "2023-10-07" @default.
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- W4387394522 date "2023-10-06" @default.
- W4387394522 modified "2023-10-07" @default.
- W4387394522 title "A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function" @default.
- W4387394522 doi "https://doi.org/10.3791/65940" @default.
- W4387394522 hasPublicationYear "2023" @default.
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