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- W3167334564 abstract "Abstract Background: Parkinson’s disease (PD) is the most common neurodegenerative motor disorder and primarily affects movement control but also a range on non-motor functions. With unknown cause and lack of cure, much research is dedicated to find treatment. PD is characterized by progressive degeneration of midbrain dopamine neurons, primarily those of the substantia nigra pars compacta (SNc). Due to the complexity of the disease, animal models intended to represent symptoms similar to those observed in PD patients are instrumental to advance treatment prospects for PD. Among these, the 6-hydroxydopamine (6-OHDA) lesion model, in which dopaminergic neurons are chemically destroyed, is often favoured. However, while reproducing several features of clinical PD, including motor symptoms, mice exposed to 6-OHDA often suffer systemic dysfunction causing premature death. To avoid unnecessary spill of lives of laboratory mice and to increase the reliability of data obtained, there is a need for improved experimental protocols. Here we tested the effects of three parameters; lowered dose of toxin, careful post-operative care, and shortened interval between injection and sacrifice. Results: A detailed 6-OHDA lesion protocol using lower dose of toxin than commonly seen in the literature alongside careful post-operative care and decreased time post-injection resulted in high survival rate. Successful degeneration of midbrain dopamine neurons was confirmed in the SNc using several markers, and nigrostriatal projections were lost in the lesioned hemisphere. Dopamine neurons of the ventral tegmental area (VTA) were substantially affected as well. Conclusions: We demonstrate parameters that can be improved to increase well-being and survival of mice while preserving characteristic parkinsonian features in the 6-OHDA lesion model. A step-by-step protocol for implementation in any laboratory is provided." @default.
- W3167334564 created "2021-06-22" @default.
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- W3167334564 date "2021-06-15" @default.
- W3167334564 modified "2023-09-27" @default.
- W3167334564 title "Improving Well-Being and Survival in the 6-OHDA Lesion Model of Parkinson´s Disease in Mice: Step-By-Step Protocol" @default.
- W3167334564 doi "https://doi.org/10.21203/rs.3.rs-603222/v1" @default.
- W3167334564 hasPublicationYear "2021" @default.
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