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- W4236040283 abstract "Lesion of the dopaminergic neurons of the nigrostriatal system is a key feature of Parkinson's disease (PD). Alpha-synuclein is a protein that is a major component of Lewy bodies, histopathological hallmarks of PD, and is involved in regulation of dopamine (DA) neurotransmission. Previous studies of knockout mice have shown that inactivation of alpha-synuclein gene can lead to the reduction in number of DA neurons in the substantia nigra (SN). DA neurons of the SN are known to be the most affected in PD patients whereas DA neurons of neighboring ventral tegmental area (VTA) are much less susceptible to degeneration. Here we have studied the dynamics of changes in TH-positive cell numbers in the SN and VTA during a critical period of their embryonic development in alpha-synuclein knockout mice. This precise study of DA neurons during development of the SN revealed that not only is the number of DA neurons reduced by the end of the period of ontogenic selection, but that the way these neurons are formed is altered in alpha-synuclein knockout mice. At the same time, DA neurons in the VTA are not affected. Alpha-synuclein exerts a modulating effect on the formation of DA neurons in the SN and has no effect on the formation of DA neurons in VTA, the structure that is much less susceptible to degeneration in PD brain, suggesting a potential role of alpha-synuclein in the development of the population of DA neurons in substantia nigra." @default.
- W4236040283 created "2022-05-12" @default.
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- W4236040283 date "2018-02-20" @default.
- W4236040283 modified "2023-10-16" @default.
- W4236040283 title "Genetic inactivation of alpha-synuclein affects embryonic development of dopaminergic neurons of the substantia nigra but not the ventral tegmental area in mouse brain" @default.
- W4236040283 doi "https://doi.org/10.7287/peerj.preprints.26547v1" @default.
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