Evidence for neurogenesis in the adult mammalian substantia nigra
نویسندگان
چکیده
منابع مشابه
Evidence for neurogenesis in the adult mammalian substantia nigra.
New neurons are generated from stem cells in a few regions of the adult mammalian brain. Here we provide evidence for the generation of dopaminergic projection neurons of the type that are lost in Parkinson's disease from stem cells in the adult rodent brain and show that the rate of neurogenesis is increased after a lesion. The number of new neurons generated under physiological conditions in ...
متن کاملNo evidence for new dopaminergic neurons in the adult mammalian substantia nigra.
A recent report by Zhao et al. [Zhao, M., Momma, S., Delfani, K., Carlen, M., Cassidy, R. M., Johansson, C. B., Brismar, H., Shupliakov, O., Frisen, J. & Janson, A. M. (2003) Proc. Natl. Acad. Sci. USA 100, 7925-7930] suggests that dopaminergic neurons, the cell type lost in Parkinson's disease, are continuously generated in the adult substantia nigra pars compacta. Using similar methodological...
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Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease (PD). Until now, molecular mechanisms behind SNpc aging have not been fully investigated using high throughput techniques. Here, we show early signs of aging in SNpc, which are more evident than in ventral tegmental area (VTA), a region adjacent to SNpc but less affected ...
متن کاملThe adult substantia nigra contains progenitor cells with neurogenic potential.
In Parkinson's disease, progressive loss of dopaminergic neurons in the substantia nigra pars compacta (SN) leads to debilitating motor dysfunction. One current therapy aims at exogenous cellular replacement of dopaminergic function by transplanting fetal midbrain cells into the striatum, the main projection area of the SN. However, results using this approach have shown variable success. It ha...
متن کاملEvidence implicating substantia nigra in regulation of kindled seizure threshold.
We studied the effects of microinjected drugs and brainstem lesions on motor and limbic seizures in the kindling model of epilepsy. The duration of motor seizures was determined by timing the colonic and tonic movements of the extremities. The duration of limbic seizures was determined by measuring afterdischarge recorded on the electroencephalogram. Bilateral microinjection of a gamma-aminobut...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2003
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1131955100