期刊
JOURNAL OF NEUROSCIENCE
卷 37, 期 6, 页码 1581-1590出版社
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.1673-16.2016
关键词
amphetamine; cyclic voltammetry; dopamine; dopamine transporter; GDNF; striatum
资金
- Finnish Cultural Foundation
- Emil Aaltonen Foundation
- Jane and Aatos Erkko Foundation
- University of Helsinki doctoral program Brain and Mind
- Sigrid Juselius Foundation
- Academy of Finland [136591, 140983, 263700]
- Institute of Biotechnology, University of Helsinki
- Academy of Finland (AKA) [140983, 136591, 136591, 263700, 140983, 263700] Funding Source: Academy of Finland (AKA)
Midbrain dopamine neuron dysfunction contributes to various psychiatric and neurological diseases, including drug addiction and Parkinson's disease. Because of its well established dopaminotrophic effects, the therapeutic potential of glial cell line-derived neurotrophic factor (GDNF) has been studied extensively in various disorders with disturbed dopamine homeostasis. However, the outcomes from preclinical and clinical studies vary, highlighting a need for a better understanding of the physiological role of GDNF on striatal dopaminergic function. Nevertheless, the current lack of appropriate animal models has limited this understanding. Therefore, we have generated novel mouse models to study conditional Gdnf deletion in the CNS during embryonic development and reduction of striatal GDNF levels in adult mice via AAV-Cre delivery. We found that both of these mice have reduced amphetamine-induced locomotor response and striatal dopamine efflux. Embryonic GDNF deletion in the CNS did not affect striatal dopamine levels or dopamine release, but dopamine reuptake was increased due to increased levels of both total and synaptic membrane-associated dopamine transporters. Collectively, these results suggest that endogenous GDNF plays an important role in regulating the function of dopamine transporters in the striatum.
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