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- W4300819254 endingPage "22.2022" @default.
- W4300819254 startingPage "ENEURO.0139" @default.
- W4300819254 abstract "Several populations of neurons are purported to degenerate in Parkinson’s disease (PD). One current hypothesis suggests that vulnerable neurons in PD share common characteristics including projecting to voluminous territories and having extremely long and branched axonal domains with large numbers of neurotransmitter release sites. In this study, we used a mouse in vitro culture system to compare the axonal domain of neuronal populations suspected to be vulnerable in PD to that of neuronal populations considered at a lesser risk. In the first category, we included dopamine (DA) neurons of the substantia nigra, noradrenergic neurons of the locus coeruleus (LC), serotonin neurons of the raphe nuclei (R), and cholinergic neurons of the dorsal motor nucleus of the vagus (DMV). In the second category, we included DA neurons of the ventral tegmental area, cholinergic neurons of the hypoglossal nucleus, and cholinergic interneurons of the dorsal striatum. Validating their differential vulnerability, we find that, when compared with neurons presumed to be resilient in PD, a larger proportion of neurons presumed to be vulnerable in PD degenerate in response to cell stress induced by hydrogen peroxide. We also find that they are endowed with larger axonal domains, that are more complex, have more axonal varicosities with a higher proportion of varicosities that are positive for synaptotagmin 1 (Syt-1). Notwithstanding the obvious limitations related to the dissection of small brain nuclei and to the growth of these neurons in vitro , these findings support the hypothesis that axonal domain structure is a key characteristic of neuronal vulnerability to oxidative stress." @default.
- W4300819254 created "2022-10-04" @default.
- W4300819254 creator A5024580674 @default.
- W4300819254 creator A5075276795 @default.
- W4300819254 date "2022-09-01" @default.
- W4300819254 modified "2023-10-14" @default.
- W4300819254 title "Axonal Domain Structure as a Putative Identifier of Neuron-Specific Vulnerability to Oxidative Stress in Cultured Neurons" @default.
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- W4300819254 doi "https://doi.org/10.1523/eneuro.0139-22.2022" @default.
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