SynthesisMolecular psychiatry2022
Alterations in brain synaptic proteins and mRNAs in mood disorders: a systematic review and meta-analysis of postmortem brain studies.
Synthesis in Molecular psychiatry, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.
What it found
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.
- Pooled it
- Effectiveness of yoga for major depressive disorder: A systematic review and meta-analysis.Frontiers in psychiatry · 2023Pooled it
- Overactive Neuronal eEF2K/eEF2 signaling is associated with cognitive impairment and apathy-like behavior.Molecular psychiatry · 2026Article
- Synaptic density in the hippocampus of depressed patients: A quantitative electron microscopic study.Progress in neuro-psychopharmacology & biological psychiatry · 2026Article
- Atraric acid mitigates the cognitive and pathological deficits in mice via AβInflammopharmacology · 2026Article
- In Vivo Positron Emission Tomography Imaging of Presynaptic Density Reveals Stress-Associated Synaptic Deficits Related to Behavioral and Molecular Alterations in Rats.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2026Article
- The activation of glial cells in the medulla visceral zone impairs synaptic plasticity and promotes inflammation and immune disorders in sepsis.Translational neuroscience · 2026Article
- A genome-wide analysis of the shared genetic risk architecture of complex neurological and psychiatric disorders.Nature neuroscience · 2025Article
- Neural Signatures of Bipolar Disorder and Psychotropic Medication Effects: A Multimodal Positron Emission Tomography-Magnetic Resonance Imaging Study.Biological psychiatry · 2025Article
- Prenatal depression-associated gut microbiota induces depressive-like behaviors and hippocampal neuroinflammation in germ-free mice.Translational psychiatry · 2025Article
- Ginkgo biloba L. leaf extract (EGb 761) alleviates reserpine-induced depression-like symptoms in aged rats by enhancing serotonin/norepinephrine levels and reducing oxidative/nitrosative stress.Naunyn-Schmiedeberg's archives of pharmacology · 2025Article
- Alterations of plasma neural-derived extracellular vesicles microRNAs in patients with bipolar disorder.Psychological medicine · 2025Article
- Evidence for reduced synaptic protein SNAP-25 in cerebrospinal fluid in major depressive disorder and schizophrenia.BMJ mental health · 2025Article
- Downregulation of AdipoR1 in the hippocampus impairs synaptic function and structure and causes depression-like behavior.Translational psychiatry · 2025Article
- Synaptic protein expression in bipolar disorder patient-derived neurons implicates PSD-95 as a marker of lithium response.Neuropharmacology · 2025Article
- An Updated Bio-Behavioral Profile of the Flinders Sensitive Line Rat: Reviewing the Findings of the Past Decade.Pharmacology research & perspectives · 2025Review
- Polyphenols: Natural Food-Grade Biomolecules for the Treatment of Nervous System Diseases from a Multi-Target Perspective.Pharmaceuticals (Basel, Switzerland) · 2024Review
- Targeting the postsynaptic scaffolding protein PSD-95 enhances BDNF signaling to mitigate depression-like behaviors in mice.Science signaling · 2024Article
- The Role ofInternational journal of molecular sciences · 2023Article
- Candidate biomarkers in psychiatric disorders: state of the field.World psychiatry : official journal of the World Psychiatric Association (WPA) · 2023Article
Corrections and comments
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Authors and funding
11 authors at 4 institutions in 2 countries.
Funding
Abstract
The pathophysiological mechanisms underlying bipolar (BD) and major depressive disorders (MDD) are multifactorial but likely involve synaptic dysfunction and dysregulation. There are multiple synaptic proteins but three synaptic proteins, namely SNAP-25, PSD-95, and synaptophysin, have been widely studied for their role in synaptic function in human brain postmortem studies in BD and MDD. These studies have yielded contradictory results, possibly due to the small sample size and sourcing material from different cortical regions of the brain. We performed a systematic review and meta-analysis to understand the role of these three synaptic proteins and other synaptic proteins, messenger RNA (mRNA) and their regional localizations in BD and MDD. A systematic literature search was conducted and the review is reported in accordance with the MOOSE Guidelines. Meta-analysis was performed to compare synaptic marker levels between BD/MDD groups and controls separately. 1811 papers were identified in the literature search and screened against the preset inclusion and exclusion criteria. A total of 72 studies were screened in the full text, of which 47 were identified as eligible to be included in the systematic review. 24 of these 47 papers were included in the meta-analysis. The meta-analysis indicated that SNAP-25 protein levels were significantly lower in BD. On average, PSD-95 mRNA levels were lower in BD, and protein levels of SNAP-25, PSD-95, and syntaxin were lower in MDD. Localization analysis showed decreased levels of PSD-95 protein in the frontal cortex. We found specific alterations in synaptic proteins and RNAs in both BD and MDD. The review was prospectively registered online in PROSPERO international prospective register of systematic reviews, registration no. CRD42020196932.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.