Cited by 252Neuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on BehaviorTreatment of Major Depression

The DOI matches its Crossref record; 121 of the 121 references it cites were found in a registry or an index.

Raphe serotonin neurons are not homogenous: Electrophysiological, morphological and neurochemical evidence

Open access

Abstract

The median (MR) and dorsal raphe (DR) nuclei contain the majority of the 5-hydroxytryptamine (5-HT, serotonin) neurons that project to limbic forebrain regions, are important in regulating homeostatic functions and are implicated in the etiology and treatment of mood disorders and schizophrenia. The primary synaptic inputs within and to the raphe are glutamatergic and GABAergic. The DR is divided into three subfields, i.e., ventromedial (vmDR), lateral wings (lwDR) and dorsomedial (dmDR). Our previous work shows that cell characteristics of 5-HT neurons and the magnitude of the 5-HT(1A) and 5-HT(1B) receptor-mediated responses in the vmDR and MR are not the same. We extend these observations to examine the electrophysiological properties across all four raphe subfields in both 5-HT and non-5-HT neurons. The neurochemical topography of glutamatergic and GABAergic cell bodies and nerve terminals were identified using immunohistochemistry and the morphology of the 5-HT neurons was measured. Although 5-HT neurons possessed similar physiological properties, important differences existed between subfields. Non-5-HT neurons were indistinguishable from 5-HT neurons. GABA neurons were distributed throughout the raphe, usually in areas devoid of 5-HT neurons. Although GABAergic synaptic innervation was dense throughout the raphe (immunohistochemical analysis of the GABA transporters GAT1 and GAT3), their distributions differed. Glutamate neurons, as defined by vGlut3 anti-bodies, were intermixed and co-localized with 5-HT neurons within all raphe subfields. Finally, the dendritic arbor of the 5-HT neurons was distinct between subfields. Previous studies regard 5-HT neurons as a homogenous population. Our data support a model of the raphe as an area composed of functionally distinct subpopulations of 5-HT and non-5-HT neurons, in part delineated by subfield. Understanding the interaction of the cell properties of the neurons in concert with their morphology, local distribution of GABA and glutamate neurons and their synaptic input, reveals a more complicated and heterogeneous raphe. These results provide an important foundation for understanding how specific subfields modulate behavior and for defining which aspects of the circuitry are altered during the etiology of psychological disorders.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.neuropharm.2011.04.008

Cites

121 of 121 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Flagged first, then by citations

Show all 121 references

Cited by

Sorted by citations

Items 101–200 of 248

Metadata

Authors
Calizo, L. H., Akanwa, A., Ma, X., Pan, Y.-Z., Lemos, J. C., Craige, C., Heemstra, L. A., & Beck, S. G.
Affiliations
Children's Hospital of Philadelphia (US)
Corresponding author
Beck, Sheryl G.
Venue
Neuropharmacology
Publisher
Elsevier BV
Published
2011-09
Volume
61
Issue
3
Pages
524-543
ISSN
0028-3908 (ISSN-L)
OpenAlex
W1987083929
Cited by
252
References
121
Citations by year
2026: 5 · 2025: 10 · 2024: 14 · 2023: 18 · 2022: 9 · 2021: 17 · 2020: 22 · 2019: 25 · 2018: 16 · 2017: 17 · 2016: 16 · 2015: 23 · 2014: 16 · 2013: 25 · 2012: 14
FWCI
7.82
Type
journal article
Language
en
Open access
Locations
  • Neuropharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (MH0754047)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Pharmacology (medical) › Treatment of Major Depression
Keywords
raphe nuclei, serotonergic neurons, dorsal raphe nucleus, median raphe, neuronal heterogeneity, GABAergic neurons, glutamatergic neurons, VGLUT3, GABA transporters, dendritic morphology, synaptic input, 5-HT1A receptor, 5-HT1B receptor, mood disorders, schizophrenia
MeSH terms
Animals, Brain Chemistry, Dendrites, Glutamate Decarboxylase, Immunohistochemistry, Male, Membrane Potentials, Synaptic Transmission, Neurons, Raphe Nuclei, Tryptophan Hydroxylase, Electric Impedance, Rats, Sprague-Dawley, Patch-Clamp Techniques, Receptor, Serotonin, 5-HT1A, Receptor, Serotonin, 5-HT1B, GABA Plasma Membrane Transport Proteins, Glucose Transporter Type 3, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review