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Controlled cortical impact injury was used to examine relationships between focal posttraumatic cortical damage and mossy fiber sprouting (MFS) in the dentate gyrus in three mouse strains. Posttraumatic MFS was more robust when cortical injury impinged upon the hippocampus, versus contusions restricted to neocortex, and was qualitatively similar among CD-1, C57BL/6, and FVB/N background strains. Impact parameters influencing injury severity may be critical in reproducing epilepsy-related changes in neurotrauma models.
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http://dx.doi.org/10.1016/j.eplepsyres.2011.10.011 | DOI Listing |
J Neurochem
September 2025
Carl-Ludwig-Institute of Physiology, Faculty of Medicine, Leipzig University, Leipzig, Germany.
Recent evidence indicates that the concentration of ATP remains stable during neuronal activity due to activity-dependent ATP production. However, the mechanisms of activity-dependent ATP production remain controversial. To stabilize the ATP concentration, feedforward mechanisms, which may rely on calcium or the sodium-potassium pump, do not require changes in the ATP and ADP concentrations.
View Article and Find Full Text PDFBrain Res Bull
September 2025
Emergency Department, the affiliated Hospital of Guizhou Medical University, Guiyang (550004), Guizhou Province, PR China. Electronic address:
Drug-resistant epilepsy (DRE) is frequently characterized by pathological mossy fiber sprouting (MFS), which is a defining indicator of aberrant synaptic remodeling within the hippocampus. Despite extensive investigations of the molecular underpinnings of MFS, they remain only partially elucidated. Synaptic vesicle protein 2A (SV2A) is a key modulator of neurotransmitter exocytosis that has been associated with epileptogenesis.
View Article and Find Full Text PDFNeurobiol Aging
September 2025
Departamento de Farmacobiología. Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de México 14330, Mexico. Electronic address:
The physiological decline associated with aging is often accompanied by a progressive deterioration in cognitive processing abilities driven by a series of cellular dysfunctions that remain poorly understood. In the hippocampus, a critical area for learning and memory, aging affects the functional expression of ionotropic and metabotropic receptors, including the metabotropic glutamate receptors (mGluRs). mGluRs play a critical role in multiple cellular functions, including modulation of ion channels and intrinsic excitability, synaptic transmission, and induction of synaptic plasticity, processes considered part of the cellular substrates for learning and memory.
View Article and Find Full Text PDFFront Neuroanat
August 2025
Division of Functional Neuroanatomy, Institute of Anatomy, University of Zürich, Zürich, Switzerland.
Even though bats are the second most speciose group of mammals, neuroanatomical studies of their hippocampus are rare, particularly of small echolocating bats. Here, we provide a qualitative and quantitative neuroanatomical analysis of the hippocampus of small echolocating bats (Phyllostomidae and Vespertilionidae). Calcium-binding proteins revealed species- and family-specific patterns for calbindin and calretinin.
View Article and Find Full Text PDFEpilepsia Open
August 2025
Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China.
Objective: This study aimed to elucidate the molecular role of neuronal nitric oxide synthase (nNOS, encoded by Nos1) in adult-born dentate granule cells (DGCs) during temporal lobe epilepsy (TLE).
Methods: We used GFP-expressing retrovirus (RV) to analyze morphological changes in DGCs. Nos1 knockout (Nos1) mice were generated to assess whether nNOS deficiency would induce mossy fiber sprouting (MFS), affect neurogenesis, and observe the morphological changes of DGCs.