Molecular-level functional magnetic resonance imaging of dopaminergic signaling.

Molecular-level functional magnetic resonance imaging of dopaminergic signaling.
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DOI:
10.1126/science.1249380
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发表时间:
2014-05-02
期刊:
影响因子:
56.9
通讯作者:
Jasanoff, Alan
Jasanoff, Alan
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lee, Taekwan;Cai, Lili X.;Lelyveld, Victor S.;Hai, Aviad;Jasanoff, Alan

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We demonstrate a brain activity mapping technique that combines molecular specificity and spatial coverage using a neurotransmitter sensor detectable by magnetic resonance imaging (MRI). This molecular fMRI method yielded time-resolved volumetric measurements of dopamine release evoked by reward-related lateral hypothalamic brain stimulation of rats injected with the neurotransmitter sensor. Peak dopamine concentrations and release rates were observed in the anterior nucleus accumbens core. Substantial dopamine transients were also present in more caudal areas. Dopamine release amplitudes correlated with the rostrocaudal stimulation coordinate, suggesting participation of hypothalamic circuitry in modulating dopamine responses. This work provides a foundation for development and application of quantitative molecular fMRI techniques targeted toward numerous components of neural physiology.
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