Structural correlates of heterogeneous in vivo activity of midbrain dopaminergic neurons
Open accessAbstract
Dopaminergic neurons of the substantia nigra pars compacta (SNc) exhibit functional heterogeneity that likely underpins their diverse roles in behavior. We examined how the functional diversity of identified dopaminergic neurons in vivo correlates with differences in somato-dendritic architecture and afferent synaptic organization. Stereological analysis of individually recorded and labeled dopaminergic neurons of rat SNc revealed that they received approximately 8,000 synaptic inputs, at least 30% of which were glutamatergic and 40-70% were GABAergic. The latter synapses were proportionally greater in number and denser on dendrites located in the substantia nigra pars reticulata (SNr) than on those located in SNc, revealing the existence of two synaptically distinct and region-specific subcellular domains. We also found that the relative extension of SNc neuron dendrites into the SNr dictated overall GABAergic innervation and predicted inhibition responses to aversive stimuli. We conclude that diverse wiring patterns determine the heterogeneous activities of midbrain dopaminergic neurons in vivo.
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The majority of afferents onto DA neurons of the VTA-as much as 70% of synaptic inputs-are GABAergic and have a major impact on the activity of DA cells.
“Given that the majority of afferents onto DA neurons of the VTA -as much as 70 % of synaptic inputs -are GABAergic and have a major impact on the activity of DA cells (Henny et al., 2012; Mathon et al., 2003; White, 1996; Yang et al., 2018)”
From Nilotinib restores memory function by preventing dopaminergic neuron degeneration in a mouse model of Alzheimer’s Disease (2021) · cites this paper as Henny et al., 2012
Aversive events recruit subpopulations of DA neurons to contribute to learning and memory.
“These results support the hypothesis that aversive events recruit subpopulations of DA neurons (Brischoux et al., 2009; Henny et al., 2012; Lammel et al., 2011; Lammel et al., 2014; Lammel et al., 2012) to contribute to learning and memory.”
From Dopamine regulates aversive contextual learning and associated in vivo synaptic plasticity in the Hippocampus (2016) · cites this paper as Henny et al., 2012
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“Recent studies indicate that DA neurons have a more heterogeneous response profile (Henny et al., 2012).”
BackgroundResultLa Barbera, L., Vedele, F., Nobili, A., Krashia, P., Spoleti, E., Latagliata, E. C., Cutuli, D., Cauzzi, E., Marino, R., Viscomi, M. T., et al. (2021) · Progress in Neurobiology · doi:10.1016/j.pneurobio.2021.102031 · Cited by 98 · see citing works
“activity of DA cells (Henny et al., 2012; Mathon et al., 2003; White, 1996; Yang et al., 2018), we next examined whether alterations in the GABAergic input on Tg2576 DA neurons could contribute to the L.”
BackgroundDrug addiction: from bench to bedside
Cheron, J., & Kerchove d’Exaerde, A. D. (2021) · Translational Psychiatry · doi:10.1038/s41398-021-01542-0 · Cited by 75 · see citing works
- Authors
- Henny, P., Brown, M. T. C., Northrop, A., Faunes, M., Ungless, M. A., Magill, P. J., & Bolam, J. P.
- Affiliations
- Pontificia Universidad Católica de Chile (CL)
- Hammersmith Hospital (GB)
- University of Oxford (GB)
- Corresponding author
- Henny, Pablo
- Venue
- Nature Neuroscience
- Published
- 2012-02-12
- Volume
- 15
- Issue
- 4
- Pages
- 613-619
- ISSN
- 1097-6256 (ISSN-L)
- 1546-1726
- PMC
- PMC4242968
- OpenAlex
- W2075511856
- Cited by
- 139
- References
- 49
- Citations by year
- 2026: 5 · 2025: 6 · 2024: 9 · 2023: 7 · 2022: 6 · 2021: 11 · 2020: 4 · 2019: 7 · 2018: 9 · 2017: 11 · 2016: 17 · 2015: 14 · 2014: 16 · 2013: 10 · 2012: 7
- FWCI
- 6.19
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Americanae (AECID Library) (submittedVersion, other-oa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
- Funders
- Parkinson's UK (G-0601)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Health Sciences › Medicine › Neurology › Neurological disorders and treatments
- Keywords
- midbrain dopaminergic neurons, substantia nigra pars compacta, substantia nigra pars reticulata, neuronal heterogeneity, dendritic ultrastructure, glutamatergic synaptic input, aversive stimuli, neuronal inhibition, juxtacellular labeling, stereology
- MeSH terms
- Action Potentials, Animals, Mesencephalon, Physical Stimulation, Synapses, Rats, Dopaminergic Neurons
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