Dopamine Modulates Serotonin Innervation in the Drosophila Brain
Parkinson’s disease (PD) results from a progressive degeneration of the dopaminergic nigrostriatal system leading to a decline in movement control, with resting tremor, rigidity and postural instability. Several aspects of PD can be modeled in the fruit fly, Drosophila melanogaster, including α-synu...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Frontiers Media S.A.
2017-10-01
|
Series: | Frontiers in Systems Neuroscience |
Subjects: | |
Online Access: | http://journal.frontiersin.org/article/10.3389/fnsys.2017.00076/full |
id |
doaj-f207c5b0ce21479b9960abd655cb491a |
---|---|
record_format |
Article |
spelling |
doaj-f207c5b0ce21479b9960abd655cb491a2020-11-24T21:35:01ZengFrontiers Media S.A.Frontiers in Systems Neuroscience1662-51372017-10-011110.3389/fnsys.2017.00076282688Dopamine Modulates Serotonin Innervation in the Drosophila BrainJanna Niens0Fabienne Reh1Büşra Çoban2Karol Cichewicz3Julia Eckardt4Yi-Ting Liu5Jay Hirsh6Thomas D. Riemensperger7Molecular Neurobiology of Behavior, Johann-Friedrich-Blumenbach-Institute for Zoology and Anthropology, University of Göttingen, Göttingen, GermanyMolecular Neurobiology of Behavior, Johann-Friedrich-Blumenbach-Institute for Zoology and Anthropology, University of Göttingen, Göttingen, GermanyMolecular Neurobiology of Behavior, Johann-Friedrich-Blumenbach-Institute for Zoology and Anthropology, University of Göttingen, Göttingen, GermanyDepartment of Biology, University of Virginia, Charlottesville, VA, United StatesMolecular Neurobiology of Behavior, Johann-Friedrich-Blumenbach-Institute for Zoology and Anthropology, University of Göttingen, Göttingen, GermanyDepartment of Biology, University of Virginia, Charlottesville, VA, United StatesDepartment of Biology, University of Virginia, Charlottesville, VA, United StatesMolecular Neurobiology of Behavior, Johann-Friedrich-Blumenbach-Institute for Zoology and Anthropology, University of Göttingen, Göttingen, GermanyParkinson’s disease (PD) results from a progressive degeneration of the dopaminergic nigrostriatal system leading to a decline in movement control, with resting tremor, rigidity and postural instability. Several aspects of PD can be modeled in the fruit fly, Drosophila melanogaster, including α-synuclein-induced degeneration of dopaminergic neurons, or dopamine (DA) loss by genetic elimination of neural DA synthesis. Defective behaviors in this latter model can be ameliorated by feeding the DA precursor L-DOPA, analogous to the treatment paradigm for PD. Secondary complication from L-DOPA treatment in PD patients are associated with ectopic synthesis of DA in serotonin (5-HT)-releasing neurons, leading to DA/5-HT imbalance. Here we examined the neuro-anatomical adaptations resulting from imbalanced DA/5-HT signaling in Drosophila mutants lacking neural DA. We find that, similar to rodent models of PD, lack of DA leads to increased 5-HT levels and arborizations in specific brain regions. Conversely, increased DA levels by L-DOPA feeding leads to reduced connectivity of 5-HT neurons to their target neurons in the mushroom body (MB). The observed alterations of 5-HT neuron plasticity indicate that loss of DA signaling is not solely responsible for the behavioral disorders observed in Drosophila models of PD, but rather a combination of the latter with alterations of 5-HT circuitry.http://journal.frontiersin.org/article/10.3389/fnsys.2017.00076/fullParkinson’s diseasedopamineserotoninDrosophila melanogasterneuroanatomyplasticity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Janna Niens Fabienne Reh Büşra Çoban Karol Cichewicz Julia Eckardt Yi-Ting Liu Jay Hirsh Thomas D. Riemensperger |
spellingShingle |
Janna Niens Fabienne Reh Büşra Çoban Karol Cichewicz Julia Eckardt Yi-Ting Liu Jay Hirsh Thomas D. Riemensperger Dopamine Modulates Serotonin Innervation in the Drosophila Brain Frontiers in Systems Neuroscience Parkinson’s disease dopamine serotonin Drosophila melanogaster neuroanatomy plasticity |
author_facet |
Janna Niens Fabienne Reh Büşra Çoban Karol Cichewicz Julia Eckardt Yi-Ting Liu Jay Hirsh Thomas D. Riemensperger |
author_sort |
Janna Niens |
title |
Dopamine Modulates Serotonin Innervation in the Drosophila Brain |
title_short |
Dopamine Modulates Serotonin Innervation in the Drosophila Brain |
title_full |
Dopamine Modulates Serotonin Innervation in the Drosophila Brain |
title_fullStr |
Dopamine Modulates Serotonin Innervation in the Drosophila Brain |
title_full_unstemmed |
Dopamine Modulates Serotonin Innervation in the Drosophila Brain |
title_sort |
dopamine modulates serotonin innervation in the drosophila brain |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Systems Neuroscience |
issn |
1662-5137 |
publishDate |
2017-10-01 |
description |
Parkinson’s disease (PD) results from a progressive degeneration of the dopaminergic nigrostriatal system leading to a decline in movement control, with resting tremor, rigidity and postural instability. Several aspects of PD can be modeled in the fruit fly, Drosophila melanogaster, including α-synuclein-induced degeneration of dopaminergic neurons, or dopamine (DA) loss by genetic elimination of neural DA synthesis. Defective behaviors in this latter model can be ameliorated by feeding the DA precursor L-DOPA, analogous to the treatment paradigm for PD. Secondary complication from L-DOPA treatment in PD patients are associated with ectopic synthesis of DA in serotonin (5-HT)-releasing neurons, leading to DA/5-HT imbalance. Here we examined the neuro-anatomical adaptations resulting from imbalanced DA/5-HT signaling in Drosophila mutants lacking neural DA. We find that, similar to rodent models of PD, lack of DA leads to increased 5-HT levels and arborizations in specific brain regions. Conversely, increased DA levels by L-DOPA feeding leads to reduced connectivity of 5-HT neurons to their target neurons in the mushroom body (MB). The observed alterations of 5-HT neuron plasticity indicate that loss of DA signaling is not solely responsible for the behavioral disorders observed in Drosophila models of PD, but rather a combination of the latter with alterations of 5-HT circuitry. |
topic |
Parkinson’s disease dopamine serotonin Drosophila melanogaster neuroanatomy plasticity |
url |
http://journal.frontiersin.org/article/10.3389/fnsys.2017.00076/full |
work_keys_str_mv |
AT jannaniens dopaminemodulatesserotonininnervationinthedrosophilabrain AT fabiennereh dopaminemodulatesserotonininnervationinthedrosophilabrain AT busracoban dopaminemodulatesserotonininnervationinthedrosophilabrain AT karolcichewicz dopaminemodulatesserotonininnervationinthedrosophilabrain AT juliaeckardt dopaminemodulatesserotonininnervationinthedrosophilabrain AT yitingliu dopaminemodulatesserotonininnervationinthedrosophilabrain AT jayhirsh dopaminemodulatesserotonininnervationinthedrosophilabrain AT thomasdriemensperger dopaminemodulatesserotonininnervationinthedrosophilabrain |
_version_ |
1725947004211691520 |