Cited by 154Tryptophan and brain disordersTreatment of Major DepressionAdvanced MRI Techniques and Applications

IFN-Alpha-Induced Cortical and Subcortical Glutamate Changes Assessed by Magnetic Resonance Spectroscopy

Open access
Haroon, Ebrahim, Woolwine, Bobbi J, Chen, Xiangchuan, Pace, Thaddeus W, Parekh, Samir, Spivey, James R, Hu, Xiaoping P, Miller, Andrew H·2014·Neuropsychopharmacology

Abstract

Cytokine effects on behavior may be related to alterations in glutamate metabolism. We therefore measured glutamate concentrations in brain regions shown to be affected by inflammatory stimuli including the cytokine interferon (IFN)-alpha. IFN-alpha is known to alter neural activity in the dorsal anterior cingulate cortex (dACC) and basal ganglia in association with symptoms of depression and increases in peripheral cytokines including the tumor necrosis factor (TNF) and its soluble receptor. Single-voxel magnetic resonance spectroscopy (MRS) was employed to measure glutamate concentrations normalized to creatine (Glu/Cr) in dACC and basal ganglia of 31 patients with hepatitis C before and after ∼ 1 month of either no treatment (n = 14) or treatment with IFN-alpha (n = 17). Depressive symptoms were measured at each visit using the Inventory of Depressive Symptoms-Clinician Rating (IDS-C) and the Multidimensional Fatigue Inventory. IFN-alpha was associated with a significant increase in Glu/Cr in dACC and left basal ganglia. Increases in dACC Glu/Cr were positively correlated with scores on the IDS-C in the group as a whole, but not in either group alone. Glu/Cr increases in left basal ganglia were correlated with decreased motivation in the group as a whole and in IFN-alpha-treated subjects alone. No Glu/Cr changes were found in the right basal ganglia, and no significant correlations were found between Glu/Cr and the inflammatory markers. IFN-alpha-induced increases in glutamate in dACC and basal ganglia are consistent with MRS findings in bipolar depression and suggest that inflammatory cytokines may contribute to glutamate alterations in patients with mood disorders and increased inflammation.

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 · 10.1038/npp.2014.25

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

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?

  • Inflammatory stimuli are associated with reductions in reward responsiveness in the striatum across multiple neuroimaging platforms in otherwise non-depressed individuals given IFNα, endotoxin or typhoid vaccination.

    “Inflammatory stimuli have been associated with reductions in reward responsiveness in the striatum across many neuroimaging platforms, demonstrating the validity and reproducibility of these cytokine-mediated effects on the brain in otherwise non-depressed individuals peripherally administered IFNα, endotoxin or typhoid vaccination and imaged by PET, functional magnetic resonance imaging (fMRI), M”

    From The role of inflammation in depression: from evolutionary imperative to modern treatment target (2016) · cites this paper as [83]

    The Introduction (page unavailable) reports reduced ventral-striatal activation during reward tasks after IFNα and endotoxin. For typhoid vaccination, it instead reports altered substantia nigra activation associated with slower psychomotor speed, not reduced striatal reward responsiveness. The paper’s MRS findings concern increased glutamate and reduced motivation, so they do not establish the claimed reward finding across multiple imaging platforms. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Administration of IFN-α for the treatment of hepatitis C increases glutamate to creatinine levels in the dACC that correlate with anhedonia and fatigue.

    “For instance, administration of IFN-α for the treatment of hepatitis C increases glutamate to creatinine levels in the dACC that correlate with anhedonia and fatigue (Haroon et al, 2014).”

    From Inflammation in Fear- and Anxiety-Based Disorders: PTSD, GAD, and Beyond (2017) · cites this paper as Haroon et al, 2014

    The Abstract reports that IFN-α treatment in patients with hepatitis C increased glutamate normalized to creatine (Glu/Cr) in the dACC. The Correlations section reports an association between dACC Glu/Cr changes and overall depression severity across treated patients and controls, but not within either group alone; it reports no significant association with fatigue subscales and does not establish a dACC association with anhedonia. (LLM, conf=0.92)

    Experimental — accuracy not yet measured
  • The observed NDI increase during interferon alpha therapy has been interpreted as representing the inflammatory process.

    “the observed NDI increase has been interpreted as representing the inflammatory process.”

    From NODDI in clinical research (2020) · cites this paper as Haroon et al., 2014

    The Abstract and Discussion report increased glutamate measured as Glu/Cr during IFN-alpha treatment and discuss possible inflammatory mechanisms. Our copy does not report an NDI increase or interpret NDI as representing inflammation (searched: NDI, neurite density index). (LLM, conf=0.76)

    Experimental — accuracy not yet measured

Self-check

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

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

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. [10]10. First MB, Spitzer RL, Gibbon M, Williams JBW (2002). Structured Clinical Interview for DSM-IV-TR Axis I Disorders, Research Version, Patient Edition. (SCID-I/P). Biometrics Research, New York State Psychiatric Institute: New York.

Cited by

Sorted by citations

Authors
Haroon, E., Woolwine, B. J., Chen, X., Pace, T. W., Parekh, S., Spivey, J. R., Hu, X. P., & Miller, A. H.
Affiliations
  • Emory University (US)
  • University of Arizona (US)
Corresponding author
Miller, Andrew H
Venue
Neuropsychopharmacology
Published
2014-01-31
Volume
39
Issue
7
Pages
1777-1785
ISSN
  • 0893-133X (ISSN-L)
  • 1740-634X
OpenAlex
W2008760801
Cited by
154
References
46
Citations by year
2026: 5 · 2025: 7 · 2024: 9 · 2023: 12 · 2022: 13 · 2021: 15 · 2020: 20 · 2019: 14 · 2018: 15 · 2017: 9 · 2016: 13 · 2015: 16 · 2014: 6
FWCI
4.51
Type
journal article
Language
en
Open access
Locations
  • Neuropsychopharmacology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Mental Health (K23MH091254)
Topics
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
Keywords
interferon-alpha, glutamate, dorsal anterior cingulate cortex, basal ganglia, hepatitis C, cytokines, depression, fatigue, motivation, neuroinflammation, mood disorders, TNF-α
MeSH terms
Adult, Aged, Antiviral Agents, Brain, Creatine, Depression, Female, Hepatitis C, Humans, Longitudinal Studies, Male, Middle Aged, Magnetic Resonance Spectroscopy, Statistics as Topic, Hepacivirus, Cytokines, Interferon-alpha, Glutamic Acid

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