Cited by 178Functional Brain Connectivity StudiesSchizophrenia research and treatmentMental Health and Psychiatry

Early-course unmedicated schizophrenia patients exhibit elevated prefrontal connectivity associated with longitudinal change

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Anticevic, Alan, Hu, Xinyu, Xiao, Yuan, Hu, Junmei, Li, Fei, Bi, Feng, Cole, Michael W., Savic, Aleksandar +8 more·2015·The Journal of Neuroscience

Abstract

Strong evidence implicates prefrontal cortex (PFC) as a major source of functional impairment in severe mental illness such as schizophrenia. Numerous schizophrenia studies report deficits in PFC structure, activation, and functional connectivity in patients with chronic illness, suggesting that deficient PFC functional connectivity occurs in this disorder. However, the PFC functional connectivity patterns during illness onset and its longitudinal progression remain uncharacterized. Emerging evidence suggests that early-course schizophrenia involves increased PFC glutamate, which might elevate PFC functional connectivity. To test this hypothesis, we examined 129 non-medicated, human subjects diagnosed with early-course schizophrenia and 106 matched healthy human subjects using both whole-brain data-driven and hypothesis-driven PFC analyses of resting-state fMRI. We identified increased PFC connectivity in early-course patients, predictive of symptoms and diagnostic classification, but less evidence for "hypoconnectivity." At the whole-brain level, we observed "hyperconnectivity" around areas centered on the default system, with modest overlap with PFC-specific effects. The PFC hyperconnectivity normalized for a subset of the sample followed longitudinally (n = 25), which also predicted immediate symptom improvement. Biologically informed computational modeling implicates altered overall connection strength in schizophrenia. The initial hyperconnectivity, which may decrease longitudinally, could have prognostic and therapeutic implications.

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Crossref · 10.1523/jneurosci.2310-14.2015

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  • Ketamine infusion in healthy volunteers may better mimic the excitatory/inhibitory dysbalance and hierarchical perturbations observed in first-episode patients than in those with more chronic illness.

    “Indeed, ketamine infusion in healthy volunteers may better mimic the E/I dysbalance and hierarchical perturbations observed in first-episode patients than in those with more chronic illness (98).”

    From The Predictive Coding Account of Psychosis (2018) · cites this paper as [98]

    The Discussion section, “Prefrontal and whole-brain functional connectivity during early illness course” (page unavailable), says elevated connectivity in early-course schizophrenia is consistent with effects of NMDA-receptor antagonists used to model the disorder, and discusses possible excitation/inhibition mechanisms and hypoconnectivity in chronic illness. It does not assess hierarchical perturbations or directly establish that ketamine infusion in healthy volunteers better mimics first-episode patients than patients with chronic illness. (LLM, conf=0.85)

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  1. Anticevic A, Corlett PR, Cole MW, Savic A, Gancsos M, Tang Y, Repovs G, Murray JD, Driesen NR, Morgan PT, Ke X, Krystal JH (2014c) NMDA receptor antagonist effects on prefrontal cortical connectivity better model early than chronic schizophrenia. Biol Psychiatry. In press.

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Authors
Anticevic, A., Hu, X., Xiao, Y., Hu, J., Li, F., Bi, F., Cole, M. W., Savic, A., Yang, G. J., Repovs, G., Murray, J. D., Wang, X.-J., Huang, X., Lui, S., Krystal, J. H., & Gong, Q.
Affiliations
  • Sichuan University (CN)
  • West China Hospital of Sichuan University (CN)
  • Rutgers, The State University of New Jersey (US)
  • Yale University (US)
  • New York University (US)
Venue
The Journal of Neuroscience
Published
2015-01-07
Volume
35
Issue
1
Pages
267-286
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1998233617
Cited by
178
References
100
Citations by year
2026: 4 · 2025: 10 · 2024: 17 · 2023: 8 · 2022: 19 · 2021: 20 · 2020: 16 · 2019: 14 · 2018: 18 · 2017: 14 · 2016: 26 · 2015: 12
FWCI
13.87
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Yale University
  • National Alliance for Research on Schizophrenia and Depression
  • National Institutes of Health (DP5OD012109, UL1TR000142, MH096801)
  • West China Hospital, Sichuan University
  • National Institute on Alcohol Abuse and Alcoholism (P50AA012870)
  • National Institute of Mental Health (R01MH062349, K99MH096801, MH096801, R00MH096801)
  • National Institute of General Medical Sciences (T32GM007205)
  • National Center for Advancing Translational Sciences
  • Yale Center for Clinical Investigation, Yale School of Medicine
  • Program for Changjiang Scholars and Innovative Research Team in University
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
Keywords
prefrontal cortex, functional connectivity, hyperconnectivity, longitudinal symptom change, default mode network, glutamate, prognostic factors, resting-state fMRI
MeSH terms
Adolescent, Adult, Female, Follow-Up Studies, Humans, Longitudinal Studies, Male, Nerve Net, Schizophrenia, Schizophrenic Psychology, Prefrontal Cortex, Early Diagnosis, Young Adult

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