Psychotic patients who used cannabinoids showed different inflammation patterns linked to symptom severity
Among 119 acutely psychotic inpatients, those who tested positive for cannabinoids showed a different relationship between inflammation (IL-6) and psychosis severity than cannabinoid-negative patients, and synthetic cannabinoid users were more likely to need emergency sedation.
Quick Facts
What This Study Found
While PANSS psychosis scores were similar between groups, cannabinoid-positive patients showed a negative correlation between IL-6 levels and psychosis severity, meaning higher inflammation was associated with lower symptom scores. Synthetic cannabinoid-positive patients were more likely to require emergency agitation medication.
Key Numbers
59 cannabinoid-positive vs. 60 cannabinoid-negative patients. IL-6 negatively correlated with PANSS total (p=0.040), positive (p=0.035), and negative (p=0.024) subscales in cannabinoid-positive group.
How They Did This
Cross-sectional study comparing 59 acutely psychotic inpatients with positive cannabinoid toxicology (natural and/or synthetic) to 60 patients with negative cannabinoid toxicology. Inflammatory markers and PANSS scores were measured.
Why This Research Matters
The inverse relationship between IL-6 and psychosis severity in cannabinoid users suggests that cannabinoids may alter the typical inflammation-psychosis connection, potentially through immunomodulatory effects.
The Bigger Picture
If cannabinoids modify the inflammatory component of psychosis, this could explain why some cannabinoid-using patients present differently from non-using patients and might respond differently to anti-inflammatory interventions.
What This Study Doesn't Tell Us
Cross-sectional design cannot establish causation. The cannabinoid-positive group included both natural and synthetic users. IFN-gamma differences were not significant after adjusting for covariates.
Questions This Raises
- ?Why is the IL-6-psychosis relationship reversed in cannabinoid users?
- ?Do synthetic cannabinoids pose a greater agitation risk than natural cannabis?
- ?Could anti-inflammatory treatments work differently in cannabinoid-using psychotic patients?
Trust & Context
- Key Stat:
- IL-6 negatively correlated with psychosis severity in cannabinoid users
- Evidence Grade:
- Moderate: controlled comparison with objective toxicology, though cross-sectional and modest sample size.
- Study Age:
- Published in 2020 in Psychiatry Research.
- Original Title:
- Cannabinoid use in psychotic patients impacts inflammatory levels and their association with psychosis severity.
- Published In:
- Psychiatry research, 293, 113380 (2020)
- Authors:
- Gibson, Claire L, Bassir Nia, Anahita(3), Spriggs, Sharron A, DeFrancisco, Daniel, Swift, Amy, Perkel, Charles, Zhong, Xiaobo, Mazumdar, Madhu, Fernandez, Nicolas, Patel, Manishkumar, Kim-Schulze, Seunghee, Hurd, Yasmin L
- Database ID:
- RTHC-02572
Evidence Hierarchy
A snapshot of a population at one point in time.
What do these levels mean? →Frequently Asked Questions
Why did cannabinoid users need more emergency medication?
Particularly those who tested positive for synthetic cannabinoids were more likely to require PRN (as-needed) medication for agitation in the emergency room, suggesting synthetic cannabinoids may produce more acute behavioral disturbance.
What does the IL-6 finding mean?
Normally, higher IL-6 (an inflammatory marker) correlates with worse psychosis. In cannabinoid-positive patients, this relationship was reversed, possibly because cannabinoids have immunomodulating properties that change how inflammation relates to symptoms.
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Cite This Study
https://rethinkthc.com/research/RTHC-02572APA
Gibson, Claire L; Bassir Nia, Anahita; Spriggs, Sharron A; DeFrancisco, Daniel; Swift, Amy; Perkel, Charles; Zhong, Xiaobo; Mazumdar, Madhu; Fernandez, Nicolas; Patel, Manishkumar; Kim-Schulze, Seunghee; Hurd, Yasmin L. (2020). Cannabinoid use in psychotic patients impacts inflammatory levels and their association with psychosis severity.. Psychiatry research, 293, 113380. https://doi.org/10.1016/j.psychres.2020.113380
MLA
Gibson, Claire L, et al. "Cannabinoid use in psychotic patients impacts inflammatory levels and their association with psychosis severity.." Psychiatry research, 2020. https://doi.org/10.1016/j.psychres.2020.113380
RethinkTHC
RethinkTHC Research Database. "Cannabinoid use in psychotic patients impacts inflammatory l..." RTHC-02572. Retrieved from https://rethinkthc.com/research/gibson-2020-cannabinoid-use-in-psychotic
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.