A bidirectional network for appetite control in larval zebrafish

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2019
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Lei Wee, Caroline
Yue Song, Erin
Evan Johnson, Robert
Ailani, Deepak
Randlett, Owen
Kim, Ji-Yoon
Nikitchenko, Maxim
Yang, Chao-Tsung
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eLife. eLife Sciences Publications. 2019(8), e43775. eISSN 2050-084X. Available under: doi: 10.7554/eLife.43775.001
Zusammenfassung

Medial and lateral hypothalamic loci are known to suppress and enhance appetite, respectively, but the dynamics and functional significance of their interaction have yet to be explored. Here we report that, in larval zebrafish, primarily serotonergic neurons of the ventromedial caudal hypothalamus (cH) become increasingly active during food deprivation, whereas activity in the lateral hypothalamus (LH) is reduced. Exposure to food sensory and consummatory cues reverses the activity patterns of these two nuclei, consistent with their representation of opposing internal hunger states. Baseline activity is restored as food-deprived animals return to satiety via voracious feeding. The antagonistic relationship and functional importance of cH and LH activity patterns were confirmed by targeted stimulation and ablation of cH neurons. Collectively, the data allow us to propose a model in which these hypothalamic nuclei regulate different phases of hunger and satiety and coordinate energy balance via antagonistic control of distinct behavioral outputs.

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ISO 690LEI WEE, Caroline, Erin YUE SONG, Robert EVAN JOHNSON, Deepak AILANI, Owen RANDLETT, Ji-Yoon KIM, Maxim NIKITCHENKO, Armin BAHL, Chao-Tsung YANG, 2019. A bidirectional network for appetite control in larval zebrafish. In: eLife. eLife Sciences Publications. 2019(8), e43775. eISSN 2050-084X. Available under: doi: 10.7554/eLife.43775.001
BibTex
@article{LeiWee2019bidir-53500,
  year={2019},
  doi={10.7554/eLife.43775.001},
  title={A bidirectional network for appetite control in larval zebrafish},
  number={8},
  journal={eLife},
  author={Lei Wee, Caroline and Yue Song, Erin and Evan Johnson, Robert and Ailani, Deepak and Randlett, Owen and Kim, Ji-Yoon and Nikitchenko, Maxim and Bahl, Armin and Yang, Chao-Tsung},
  note={Article Number: e43775}
}
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