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Alterations in Gene Expression Associated with Primary Demyelination and Remyelination in the Peripheral Nervous System

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Abstract

Primary demyelination is an important component of a number of human diseases and toxic neuropathies. Animal models of primary demyelination are useful for isolating processes involved in myelin breakdown and remyelination because the complicating events associated with axonal degeneration and regeneration are not present. The tellurium neuropathy model has proven especially useful in this respect. Tellurium specifically blocks synthesis of cholesterol, a major component of PNS myelin. The resulting cholesterol deficit in myelin-producing Schwann cells rapidly leads to synchronous primary demyelination of the sciatic nerve, which is followed by rapid synchronous remyelination when tellurium exposure is discontinued. Known alterations in gene expression for myelin proteins and for other proteins involved in the sequence of events associated with demyelination and subsequent remyelination in the PNS are reviewed, and new data regarding gene expression changes during tellurium neuropathy are presented and discussed.

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  1. Department of Biochemistry and Biophysics, Neuroscience Center, University of North Carolina, Chapel Hill, NC, 27599.

    Arrel D. Toews & Pierre Morell

  2. Neuroscience Center, University of North Carolina, Chapel Hill, NC, 27599

    Janell Hostettler, Cheri Barrett & Pierre Morell

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Toews, A.D., Hostettler, J., Barrett, C. et al. Alterations in Gene Expression Associated with Primary Demyelination and Remyelination in the Peripheral Nervous System. Neurochem Res 22, 1271–1280 (1997). https://doi.org/10.1023/A:1021941215310

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