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  • Title: Regulation of contractile protein gene expression in unloaded mouse skeletal muscle.
    Author: Criswell DS, Carson JA, Booth FW.
    Journal: J Gravit Physiol; 1996 Sep; 3(2):58-60. PubMed ID: 11540283.
    Abstract:
    Hindlimb unloading was performed on mice in an effort to study the regulation of contractile protein genes. In particular, the regulation of myosin heavy chain IIb was examined. During unloading, muscle fibers undergo a type conversion. Preliminary data from this study does not support the hypothesis that the fiber type conversion is due to an increase in promoter activity of fast isoform genes, such as myosin heavy chain IIb. The consequences of this finding are examined, with particular focus on other factors controlling gene regulation.
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