Ratner Lab

  • Delineating Oligodendrocyte Development

    Some of the nontumor problems of NF1 patients, such as learning disabilities, hydrocephaly and UBOs (unidentified bright objects identified by MRIs thought to represent areas of hyper-myelination), have led us, in collaboration with Tilat Rizvi, PhD, to discover the abnormalities of oligodendrocyte development in the NF1 mouse models.  Oligodendrocytes myelinate the axons in the CNS, providing an increased conductivity for the electrical nerve impulses traveling through the axons.  Examining how oligodendrocytes develop may provide potential therapies not only for NF1 patients, but also for patients with multiple sclerosis (a disease in which axons become demyelinated). 

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    Related Publications

    Bennett M, Rizvi TA, Karyala S, McKinnon R, Ratner N. Aberrant growth and differentiation of oligodendrocyte progenitors in neurofibromatosis type 1 mutants. J Neurosci. 23(18):7207-17. Aug, 2003.

    Rizvi TA, Akunuru S, de Courten-Myers G, Switzer RC 3rd, Nordlund ML, Ratner N. Region-specific astrogliosis in brains of mice heterozygous for mutations in the neurofibromatosis type 1 (Nf1) tumor suppressor. Brain Res.816(1):111-23. Jan, 1999.

  • dilineating-visual-400-photomicrograph

    click to enlarge

    A.  Photomicrograph of a section from adult Nf1 / + / - brain. The section is immunostained with NG2,  a marker for oligodendrocyte progenitor cells.
    B.  Cultures of oligodendrocyte progenitor cells (OPC).  Although the same number of cells from spinal cord cultures was plated, more OPCs are present in cords lacking NF1.
  • Contact Us

    For more information about the lab, contact Nancy Ratner, PhD, at  513-636-9469.