Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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Outline of Final Research Achievements |
Taste information is transmitted to the gustatory cortex and the amygdala via synapses in the solitary tract nuclei and the parabrachial nuclei (PBN) to elicit behavioral and emotional responses. We combined genetic tracing with electrophysiological recordings and immunohistochemistry to functionally characterize bitter taste-relaying neurons in the PBN, the hypothalamus, and the amygdala, which were fluorescently labeled by the transneuronal tracer WGA-DsRed originating from T2R-expressing taste receptor cells. In the PBN, the WGA-DsRed-labeled neurons were located rostrally in the external lateral PBN, and caudally in the medial PBN. The tracer-labeled neurons in the medial and the external lateral PBN exhibited the different responsivities to neuromodulators in addition to different responses for integration of viscerosensory stimuli. The data indicate the differences in the neuron types and information processing between the neurons in the medial and external lateral PBN.
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