Abstract
PurposeThe nervous system is vulnerable to radiation damage, and further optimization is required to increase the efficacy of radiotherapy while reducing harm to neurons. Given recent developments in heavy ion therapy, experimental models would be valuable to improve these therapies. Here, we utilized the nematode Caenorhabditis elegans (C. elegans) to evaluate the effects of high-dose radiation on neuron development. Methods and MaterialsIn this study, we used confocal microscopy to assess dendritic growth of the PVD nociceptor following high-dose gamma-irradiation from a Cs-137 source. ResultsIrradiation during an early larval stage (L2) delayed overall development but also independently impaired dendrite outgrowth in the PVD nociceptive neuron. Irradiation at L4 larval stage did not result in significant alterations in dendrite morphology. ConclusionsThe nematode C. elegans can serve as a high-throughput model to study the effects of high-dose radiation on dendrite growth. We propose that C. elegans can be useful for studies of experimental radiation therapy modalities and dose rates for translational research.
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