Neuronal Damage
Neuronal Damage - Related Videos
10:00
Assaying DNA Damage in Hippocampal Neurons Using the Comet Assay
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Cited by 21 •
2012
The comet assay is an efficient way of detecting single- and double-strand breaks, including alkali-labile sites and DNA-DNA/DNA-protein cross-links on the DNA in all cells including hippocampal neurons. The method takes advantage of the differential migration of DNA in an electric field due to differences in amount of DNA damage.
01:59
Modeling Neuronal Injury in Mouse Primary Cerebellar Granule Neurons
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2025
This video demonstrates the generation of a neuronal injury model in mouse primary cerebellar granule neurons. It outlines the steps involved in inducing neuronal injury using NMDA, an excitatory neurotransmitter receptor agonist, and glycine, a co-agonist. NMDA and glycine bind to specific neuronal receptors, causing their overstimulation and resulting in a massive intracellular calcium influx, which leads to neuronal cell damage and death.
06:19
Comet Assay for DNA Damage Detection in Cells
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2025
The video demonstrates the comet assay for detecting DNA damage following exposure to harmful agents. Under alkaline conditions, the DNA unwinds and denatures, and upon electrophoresis, the undamaged and damaged DNA migrate differently in the agarose gel, forming a comet-shaped structure. The slowly migrating undamaged DNA forms the circular comet head, while the rapidly migrating damaged DNA fragments form the elongated comet tail.
04:09
Assessing DNA Damage Foci: To Identify Radiation-Induced DNA Damage Foci in Cancer Cell Line Using Immunofluorescence Staining
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2023
This video describes a protocol to detect radiation-induced DNA repair foci in the colon cancer cell lines using immunofluorescence staining. DNA repair proteins get activated at the DNA damage site; therefore, we can detect them using specific antibodies and visualize them under a fluorescence microscope.
10:36
Modeling Neuronal Death and Degeneration in Mouse Primary Cerebellar Granule Neurons
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Cited by 2 •
2017
This protocol describes a simple method for isolating and culturing primary mouse cerebral granule neurons (CGNs) from 6-7 day old pups, efficient transduction of CGNs for loss and gain of function studies, and modelling NMDA-induced neuronal excitotoxicity, low-potassium-induced cell death, DNA-damage, and oxidative stress using the same culture model.
FAQs
Energy failure can disrupt the cellular processes needed to maintain neuronal signaling and synaptic communication. This loss of functional stability can promote downstream calcium imbalance, excitotoxic glutamate signaling, oxidative stress, and inflammatory activation. In neuroscience research, tracing this sequence helps determine whether an injured neuron may recover or has progressed toward irreversible loss.
Excitotoxic glutamate signaling can drive calcium overload, turning a signaling disturbance into cellular injury. Excessive calcium burden is important because it links altered synaptic communication with stress pathways that can compromise neuronal function and survival. Examining glutamate-related signaling and calcium changes helps investigators identify mechanisms that may be targeted by neuroprotective strategies.
Oxidative stress and activation of inflammatory pathways are key molecular features that can accompany neuronal injury. They matter because they help explain how an initial disturbance may extend beyond impaired signaling and affect cell survival. Measuring these pathways alongside structural and functional changes gives researchers a more complete view of injury severity and possible neuroprotective responses.
Researchers distinguish reversible dysfunction from irreversible neuronal damage by combining evidence from cellular, molecular, and imaging approaches. These complementary levels can reveal whether changes are primarily affecting signaling and synaptic communication or are associated with loss of cell survival. Making this distinction is essential when interpreting injury progression and assessing whether a neuroprotective strategy has preserved neurons.
Characterizing neuronal damage typically combines cellular, molecular, and imaging approaches rather than relying on a single measurement. Cellular observations address structural or functional changes, molecular analyses examine mechanisms such as excitotoxic signaling, calcium overload, oxidative stress, and inflammation, and imaging contributes information about injury patterns. Together, these readouts support comparisons across injury states and interventions.
Studies apply this framework when investigating injury caused by trauma, ischemia, toxic exposures, infection, or neurodegenerative disease. The same core mechanisms may be examined across these settings, but the initiating condition provides important experimental context. This broad applicability allows neuroscience research to compare how different insults disrupt signaling, activate damaging pathways, and affect neuronal survival.
By linking cellular, molecular, and imaging findings with functional and survival outcomes, studies can test whether an intervention limits injury-related changes. This approach does not simply ask whether signaling is altered; it also examines whether damaging mechanisms and progression toward cell loss are reduced. Such evidence helps evaluate neuroprotective strategies in experimental neuroscience.