PMID: 9192286Apr 1, 1997Paper

Use of a rat Y chromosome probe to determine the long-term survival of glial cells transplanted into areas of CNS demyelination

Journal of Neurocytology
M T O'Leary, W F Blakemore

Abstract

A lack of suitable markers for cells which undergo division following transplantation has hindered studies assessing the long-term survival of glial cell grafts in the CNS. A probe specific to the rat Y chromosome was used to identify male glial cells grafted into an area of ethidium bromide-induced demyelination in syngeneic adult female rat spinal cord 4 weeks, 6 months and 12 months post-transplantation. At all time points there was extensive oligodendrocyte remyelination of transplanted lesions, and graft-derived cells were present within the lesion up to 12 months post-transplantation. In order to demonstrate graft-derived oligodendrocytes in the remyelinated region at 6 and 12 months, double-labelling studies were performed using the oligodendrocyte-specific antibodies carbonic anhydrase II or phosphatidyl ethanolamine-binding protein in combination with the Y chromosome probe. It was found that the majority of oligodendrocytes in the transplanted region were graft-derived. Graft-mediated remyelination was associated with a reduction in myelin sheath thickness and increase in nodal frequency similar to that observed in spontaneous remyelination, suggesting that, like axons remyelinated spontaneously, axons remyelinated by...Continue Reading

Citations

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