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  Selective toxicity of L-DOPA to dopamine transporter-expressing neurons and locomotor behavior in zebrafish larvae

Stednitz, S., Freshner, B., Shelton, S., Shen, T., Black, D., & Gahtan, E. (2015). Selective toxicity of L-DOPA to dopamine transporter-expressing neurons and locomotor behavior in zebrafish larvae. Neurotoxicology and Teratology, 52 A, 51-56. doi:10.1016/j.ntt.2015.11.001.

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Stednitz, SJ1, Autor           
Freshner, B, Autor
Shelton, S, Autor
Shen, T, Autor
Black, D, Autor
Gahtan, E, Autor
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1External Organizations, ou_persistent22              

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 Zusammenfassung: Dopamine signaling is conserved across all animal species and has been implicated in the disease process of many neurological disorders, including Parkinson's disease (PD). The primary neuropathology in PD involves the death of dopaminergic cells in the substantia nigra (SN), an anatomical region of the brain implicated in dopamine production and voluntary motor control. Increasing evidence suggests that the neurotransmitter dopamine may have a neurotoxic metabolic product (DOPAL) that selectively damages dopaminergic cells. This study was designed to test this theory of oxidative damage in an animal model of Parkinson's disease, using a transgenic strain of zebrafish with fluorescent labeling of cells that express the dopamine transporter. The pretectum and ventral diencephalon exhibited reductions in cell numbers due to L-DOPA treatment while reticulospinal neurons that do not express the DAT were unaffected, and this was partially rescued by monoamine oxidase inhibition. Consistent with the MPTP model of PD in zebrafish larvae, spontaneous locomotor behavior in L-DOPA treated animals was depressed following a 24-h recovery period, while visually-evoked startle response rates and latencies were unaffected.

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 Datum: 2015-11
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1016/j.ntt.2015.11.001
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Titel: Neurotoxicology and Teratology
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 52 A Artikelnummer: - Start- / Endseite: 51 - 56 Identifikator: -