ArticleFrontiers in neuroscience2022
Long-Term Effects of Moderate Concussive Brain Injury During Adolescence on Synaptic and Tonic GABA Currents in Dentate Granule Cells and Semilunar Granule Cells.
Article in Frontiers in neuroscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 13 citations in OpenAlex.
- Neuronal toll-like receptor-4 regulation of matrix metalloproteinase-9 activity mediates dentate circuit dysfunction after traumatic brain injury.Journal of neuroinflammation · 2026Article
- The Protective Role of Aquaporin 4 (AQP4) in Temporal Lobe Epilepsy: Yes or No?Journal of molecular neuroscience : MN · 2026Review
- Altered Physiology and Ensemble Recruitment of Dentate Gyrus Semilunar Granule Cells in a Mouse Model of Epilepsy.bioRxiv : the preprint server for biology · 2026Article
- Neuronal Toll-like Receptor-4 regulation of Matrix Metalloproteinase-9 Activity Mediates Dentate Circuit Dysfunction after Traumatic Brain Injury.bioRxiv : the preprint server for biology · 2026Article
- Perisomatic innervation on the semilunar granule cells and outer molecular layer granule cells of the dentate gyrus of the mouse.Frontiers in neuroanatomy · 2026Article
- Article
- Differential Glutamatergic Inputs to Semilunar Granule Cells and Granule Cells Underscore Dentate Gyrus Projection Neuron Diversity.bioRxiv : the preprint server for biology · 2025Article
- Enhancing cognitive recovery in chronic traumatic brain injury through simultaneous allosteric modulation of α7 nicotinic acetylcholine and α5 GABAExperimental neurology · 2024Article
- Early deficits in dentate circuit and behavioral pattern separation after concussive brain injury.Experimental neurology · 2023Article
- Mild Traumatic Brain Injury Affects Orexin/Hypocretin Physiology Differently in Male and Female Mice.Journal of neurotrauma · 2023Article
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
Abstract
Progressive physiological changes in the hippocampal dentate gyrus circuits following traumatic brain injury (TBI) contribute to temporal evolution of neurological sequelae. Although early posttraumatic changes in dentate synaptic and extrasynaptic GABA currents have been reported, and whether they evolve over time and remain distinct between the two projection neuron classes, granule cells and semilunar granule cells, have not been evaluated. We examined long-term changes in tonic GABA currents and spontaneous inhibitory postsynaptic currents (sIPSCs) and in dentate projection neurons 3 months after moderate concussive fluid percussion injury (FPI) in adolescent rats. Granule cell tonic GABA current amplitude remained elevated up to 1 month after FPI, but decreased to levels comparable with age-matched controls by 3 months postinjury. Granule cell sIPSC frequency, which we previously reported to be increased 1 week after FPI, remained higher than in age-matched controls at 1 month and was significantly reduced 3 months after FPI. In semilunar granule cells, tonic GABA current amplitude and sIPSC frequency were not different from controls 3 months after FPI, which contrast with decreases observed 1 week after injury. The switch in granule cell inhibitory inputs from early increase to subsequent decrease could contribute to the delayed emergence of cognitive deficits and seizure susceptibility after brain injury.
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