For the first time in a genetic condition, we have also shown a disease-related increase in the frequency of Purkinje cell fusion and heterokaryon formation in Friedreich's ataxia cases; with evidence that underlying levels of cerebellar inflammation influence heterokaryon formation. Our results together further demonstrate the Purkinje cell’s unique plasticity and regenerative potential.
Understanding whether Purkinje cell axon remodelling and/or fusion represent mechanisms by which cerebellar functions can be maintained in genetic cerebellar disease has important therapeutic consequences. With the potential to protect and rescue neuronal cells and restore homeostatic balance during neurodegeneration, understanding the circumstances in which they occur may lead to techniques to manipulate these mechanisms therapeutically.
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