Cited by 18Treatment of Major DepressionNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

Serotonin is a common thread linking different classes of antidepressants

Open access
Witt, Colby E., Mena, Sergio, Holmes, Jordan, Hersey, Melinda, Buchanan, Anna Marie, Parke, Brenna, Saylor, Rachel, Honan, Lauren E. +9 more·2023·Cell Chemical Biology

Published version of a preprint

Abstract

Depression pathology remains elusive. The monoamine hypothesis has placed much focus on serotonin, but due to the variable clinical efficacy of monoamine reuptake inhibitors, the community is looking for alternative therapies such as ketamine (neurogenesis theory of antidepressant action). There is evidence that different classes of antidepressants may affect serotonin levels; a notion we test here. We measure hippocampal serotonin in mice with voltammetry and study the effects of acute challenges of escitalopram, fluoxetine, reboxetine, and ketamine. We find that pseudo-equivalent doses of these drugs similarly raise ambient serotonin levels, despite their differing pharmacodynamics because of differences in Uptake 1 and 2, rapid SERT trafficking, and modulation of serotonin by histamine. These antidepressants have different pharmacodynamics but have strikingly similar effects on extracellular serotonin. Our findings suggest that serotonin is a common thread that links clinically effective antidepressants, synergizing different theories of depression (synaptic plasticity, neurogenesis, and the monoamine hypothesis).

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Crossref · 10.1016/j.chembiol.2023.10.009

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Authors
Witt, C. E., Mena, S., Holmes, J., Hersey, M., Buchanan, A. M., Parke, B., Saylor, R., Honan, L. E., Berger, S. N., Lumbreras, S., Nijhout, F. H., Reed, M. C., Best, J., Fadel, J., Schloss, P., Lau, T., & Hashemi, P.
Affiliations
  • University of South Carolina (US)
  • Imperial College London (GB)
  • Heidelberg University (DE)
  • Duke University (US)
  • The Ohio State University (US)
Corresponding author
Hashemi, Parastoo
Venue
Cell Chemical Biology
Publisher
Elsevier BV
Published
2023-12
Volume
30
Issue
12
Pages
1557-1570.e6
ISSN
  • 2451-9448 (ISSN-L)
  • 2451-9456
OpenAlex
W4388871305
Cited by
18
References
106
Citations by year
2026: 7 · 2025: 3 · 2024: 7 · 2023: 1
FWCI
2.80
Type
journal article
Language
en
Open access
Locations
  • Cell chemical biology (publishedVersion)
  • Research Square (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
  • PubMed Central (submittedVersion, cc-by)
Funders
  • Chinese Academy of Medical Sciences
  • National Institutes of Health
  • University of South Carolina (R01AG050518, R01MH106563)
  • Chinese American Medical Society
Topics
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
serotonin, antidepressants, depression, hippocampus, extracellular serotonin, monoamine hypothesis, monoamine reuptake inhibitors, escitalopram, fluoxetine, reboxetine, ketamine, serotonin transporter, neurogenesis, synaptic plasticity, voltammetry

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