ArticleThe international journal of neuropsychopharmacology2015
Insulin-Like Growth Factor I Produces an Antidepressant-Like Effect and Elicits N-Methyl-D-Aspartate Receptor Independent Long-Term Potentiation of Synaptic Transmission in Medial Prefrontal Cortex and Hippocampus.
Article in The international journal of neuropsychopharmacology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 12 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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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
12 citing papers in PubMed, 29 citations in OpenAlex.
- Converging neurotrophic-immune signaling in autism spectrum disorder: integrative roles of klotho, GDNF/GFRA-1, IGF-1 and GLP-1 pathways.Metabolic brain disease · 2026Review
- The neurobiology of insulin-like growth factor I: From neuroprotection to modulation of brain states.Molecular psychiatry · 2023Review
- Ketamine and the Disinhibition Hypothesis: Neurotrophic Factor-Mediated Treatment of Depression.Pharmaceuticals (Basel, Switzerland) · 2023Review
- IGF-1 release in the medial prefrontal cortex mediates the rapid and sustained antidepressant-like actions of ketamine.Translational psychiatry · 2022Article
- Antidepressant-like effects of trophic factor receptor signaling.Frontiers in molecular neuroscience · 2022Review
- Article
- Metabolic Disturbances Induced by Sleep Restriction as Potential Triggers for Alzheimer's Disease.Frontiers in integrative neuroscience · 2021Review
- PDGF Modulates Synaptic Excitability and Short-Latency Afferent Inhibition in Multiple Sclerosis.Neurochemical research · 2019Article
- Cross-species evidence from human and rat brain transcriptome for growth factor signaling pathway dysregulation in major depression.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018Article
- IGFBP2 Produces Rapid-Acting and Long-Lasting Effects in Rat Models of Posttraumatic Stress Disorder via a Novel Mechanism Associated with Structural Plasticity.The international journal of neuropsychopharmacology · 2017Article
- Positive Emotional Learning Induces Resilience to Depression: A Role for NMDA Receptor-mediated Synaptic Plasticity.Current neuropharmacology · 2017Review
- Glia: A Neglected Player in Non-invasive Direct Current Brain Stimulation.Frontiers in cellular neuroscience · 2016Article
Corrections and comments
- Erratum issuedErratum.2016
Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundGrowth factors play an important role in regulating neurogenesis and synapse formation and may be involved in regulating the antidepressant response to conventional antidepressants. To date, Insulin-like growth factor I (IGFI) is the only growth factor that has shown antidepressant properties in human clinical trials. However, its mechanism of action remains unclear.
methodsThe antidepressant-like effect of a single IV dose of IGFI was determined using a chronic unpredictable stress paradigm in the rat Porsolt, sucrose preference, novelty-induced hypophagia, and ultrasonic vocalization models. The dependence of the medial prefrontal cortex for these effects was determined by direct medial prefrontal cortex injection followed by Porsolt testing as well as IGFI receptor activation in the medial prefrontal cortex following an optimal IV antidepressant-like dose of IGFI. The effect of IGFI on synaptic transmission and long-term potentiation (LTP) of synaptic strength was assessed in the hippocampus and medial prefrontal cortex. The dependence of these effects on IGFI and AMPA receptor activation and protein synthesis were also determined.
resultsIGFI produced a rapid-acting and long-lasting antidepressant-like effect in each of the depression models. These effects were blocked by IGFI and AMPA receptor antagonists, and medial prefrontal cortex was localized. IGFI robustly increased synaptic strength in the hippocampus and medial prefrontal cortex and these effects were IGFI receptor and protein synthesis-dependent but N-methyl-d-aspartate receptor independent. IGFI also robustly facilitated hippocampal metaplasticity 24 hours postdosing.
conclusionsThese data support the conclusion that the antidepressant-like effects of IGFI are mediated by a persistent, LTP-like enhancement of synaptic strength requiring both IGFIR activation and ongoing protein synthesis.
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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.