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Preclinical Evidence for Antidepressant-like Effects of Histamine H3 Receptor Modulation: A Systematic Review and
Ilaria Pullano1, Anna Maria Iazzolino1, Stefania Landi2,3
1Psychiatric Unit, Department of Health Sciences, University Magna Graecia of Catanzaro, 88100 Catanzaro, Italy.
Life (Basel, Switzerland)
|May 4, 2026
Summary
Histamine H3 receptor interventions show antidepressant-like effects in rodent models, improving outcomes in forced swim and tail suspension tests. Further standardized research is needed to confirm these promising findings for depression treatment.
Area of Science:
- Neuroscience
- Pharmacology
- Behavioral Science
Background:
- Histamine H3 receptor antagonists modulate neurotransmission and arousal.
- These compounds are investigated for potential antidepressant effects.
- Preclinical models are crucial for evaluating novel therapeutic strategies.
Purpose of the Study:
- To systematically review and meta-analyze rodent studies on H3 receptor interventions and depression-like behavior.
- To assess the efficacy of H3-related compounds using standardized behavioral tests.
- To identify trends and heterogeneity in preclinical antidepressant research.
Main Methods:
- Systematic review and random-effects meta-analysis of rodent studies.
- Inclusion of studies evaluating H3 receptor interventions on depression-like behavior.
- Primary outcome measures: Forced Swim Test (FST) and Tail Suspension Test (TST).
Main Results:
- H3 interventions significantly improved outcomes in the FST (g = 1.40).
- A positive trend was observed for TST, with substantial heterogeneity (g = 2.27).
- One study reported improved sucrose preference (g = 1.61).
Conclusions:
- H3 receptor interventions demonstrate an antidepressant-like signal in rodent models.
- Heterogeneity in TST results suggests a need for methodological standardization.
- Further well-powered preclinical studies are required to validate these findings.
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