ArticleAlcoholism, clinical and experimental research2020
Chronic Binge Alcohol Exposure During Pregnancy Alters mTOR System in Rat Fetal Hippocampus.
Article in Alcoholism, clinical and experimental research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 18 citations in OpenAlex.
- Molecular Networks of Redox Dysregulation in Fetal Alcohol Spectrum Disorders: Mechanisms and Therapeutic Prospects.Antioxidants (Basel, Switzerland) · 2026Review
- SFL-3D-cultured adipose mesenchymal cell-derived extracellular vesicles promote diabetic wound healing by alleviating microvascular endothelial senescenceBurns & trauma · 2026Article
- Mechanisms of Alcohol Interference with Hippocampal Neurogenesis and its Repair Strategies.Molecular neurobiology · 2025Review
- The 4E-BPs as Translational Regulators in Neurological Disorders: Molecular Mechanisms and Therapeutic Potential.Molecular neurobiology · 2025Review
- Prenatal alcohol exposure perturbs the development of radial glial cells in the fetal olfactory bulb.Alcohol, clinical & experimental research · 2025Article
- Prenatal Alcohol Exposure Disrupts CXCL16 Expression in Rat Hippocampus: Temporal and Sex Differences.International journal of molecular sciences · 2025Article
- Early Life Outcomes of Prenatal Exposure to Alcohol and Synthetic Cannabinoids in Mice.bioRxiv : the preprint server for biology · 2025Article
- Alcohol induces p53-mediated apoptosis in neural crest by stimulating an AMPK-mediated suppression of TORC1, S6K, and ribosomal biogenesis.Reproductive toxicology (Elmsford, N.Y.) · 2024Article
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- Alcohol exposure suppresses ribosome biogenesis and causes nucleolar stress in cranial neural crest cells.PloS one · 2024Article
- Alcohol Dependence Modulates Amygdalar mTORC2 and PKCε Expression in a Rodent Model.Nutrients · 2023Article
- A multi-organ analysis of the role of mTOR in fetal alcohol spectrum disorders.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2023Review
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- Binge-like Prenatal Ethanol Exposure Causes Impaired Cellular Differentiation in the Embryonic Forebrain and Synaptic and Behavioral Defects in Adult Mice.Brain sciences · 2022Article
- Morphological alteration in rat hippocampal neuronal dendrites following chronic binge prenatal alcohol exposure.Brain research · 2021Article
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6 authors at 1 institution in 1 country.
Funding
Abstract
backgroundGestational alcohol exposure can contribute to fetal alcohol spectrum disorders (FASD), an array of cognitive, behavioral, and physical developmental impairments. Mammalian target of rapamycin (mTOR) plays a key role in regulating protein synthesis in response to neuronal activity, thereby modulating synaptic plasticity and long-term memory formation in the brain. Based on our previous quantitative mass spectrometry proteomic studies, we hypothesized that gestational chronic binge alcohol exposure alters mTOR signaling and downstream pathways in the fetal hippocampus.
methodsPregnant Sprague-Dawley rats were assigned to either a pair-fed control (PF-Cont) or a binge alcohol (Alcohol) treatment group. Alcohol dams were acclimatized via a once-daily orogastric gavage of 4.5 g/kg alcohol (peak BAC, 216 mg/dl) from GD 5-10 and progressed to 6 g/kg alcohol (peak BAC, 289 mg/dl) from GD 11-21. Pair-fed dams similarly received isocaloric maltose dextrin.
resultsIn the Alcohol group, following this exposure paradigm, fetal body weight and crown-rump length were decreased. The phosphorylation level of mTOR (P-mTOR) in the fetal hippocampus was decreased in the Alcohol group compared with controls. Alcohol exposure resulted in dysregulation of fetal hippocampal mTORC1 signaling, as evidenced by an increase in total 4E-BP1 expression. Phosphorylation levels of 4E-BP1 and p70 S6K were also increased following alcohol exposure. P-mTOR and P-4E-BP1 were exclusively detected in the dentate gyrus and oriens layer of the fetal hippocampus, respectively. DEPTOR and RICTOR expression levels in the fetal hippocampus were increased; however, RAPTOR was not altered by chronic binge alcohol exposure.
conclusionWe conclude that chronic binge alcohol exposure during pregnancy alters mTORC1 signaling pathway in the fetal hippocampus. We conjecture that this dysregulation of mTOR protein expression, its activity, and downstream proteins may play a critical role in FASD neurobiological phenotypes.
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