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Progressive motor and respiratory metabolism deficits in post-weaning Mecp2-null male mice

Progressive motor and respiratory metabolism deficits in post-weaning Mecp2-null male mice,10.1016/j.bbr.2010.08.011,Behavioural Brain Research,Michel

Progressive motor and respiratory metabolism deficits in post-weaning Mecp2-null male mice   (Citations: 1)
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The methyl-CpG binding protein 2 (Mecp2) gene encodes a nuclear transcriptional modulator highly expressed in post-mitotic neurons. Mutations of this gene cause a large spectrum of neurological disorders in humans. Several lines of mice harboring a constitutional deletion of Mecp2 are available. The use of these models is crucial to understand the basis of Mecp2-related pathologies. However, most of the studies performed using these lines focused on different postnatal time points. The aim of the present study was to provide a more complete description of the behavioral phenotype of the Mecp2tm1.1Bird mice. To this aim, we used a modified version of the SHIRPA protocol and a set of sensorimotor tests and respiratory metabolism measurements, in a longitudinal study of the Mecp2-null male mice (Mecp2−/y) from three weeks (weaning) to eight weeks of age. Our data document, for the first time, the sequential appearance of the in vivo deficits in this mouse line. The observed deficits initially concern major parameters (such as body weight), and are followed by involuntary and sensitive defects (reflexes). Subsequently, motor functions and respiratory metabolism are severally impaired. A detailed description of these gradual defects may help to identify their neuronal origin and to elaborate novel therapeutic strategies.
Journal: Behavioural Brain Research - BEHAV BRAIN RES , vol. 216, no. 1, pp. 313-320, 2011
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