Hippocampal Neurodegeneration
Hippocampal Neurodegeneration - Related Videos
06:34
Mass Histology to Quantify Neurodegeneration in Drosophila
0 Views •
Cited by 35 •
2016
Drosophila is widely used as a model system to study neurodegeneration. This protocol describes a method by which degeneration, as determined by vacuole formation in the brain, can be quantified. It also minimizes effects due to the experimental procedure by processing and sectioning control and experimental flies as one sample.
08:20
Organotypic Hippocampal Slice Cultures
0 Views •
Cited by 52 •
2011
We describe a method to prepare organotypic hippocampal slices that can be easily adapted to other brain regions. Brain slices are laid on porous membranes and culture media is allowed to form an interface. This method preserves the gross architecture of the hippocampus for up to 2 weeks in culture.
02:57
Mechanically Injuring Drosophila Larvae Segmental Nerves to Induce Neurodegeneration
0 Views •
2025
The video demonstrates inducing neurodegeneration in Drosophila larva segmental nerves via mechanical injury. The ventral cuticle of anesthetized larvae is pinched using forceps to cause injury to the segmental nerves. The injured larvae are maintained with food, allowing the injury to cause degeneration of the motor neurons in the nerves, causing disruption of their neuromuscular junctions (NMJs).
13:24
Fluorescence and Bioluminescence Imaging of Subcellular Ca2+ in Aged Hippocampal Neurons
0 Views •
Cited by 6 •
2015
Intracellular Ca2+ remodeling in aging may contribute to excitotoxicity and neuron damage, processes mediated by Ca2+ overload. We aimed at investigating Ca2+ remodeling in the aging brain using fluorescence and bioluminescence imaging of cytosolic and mitochondrial Ca2+ in long-term cultures of rat hippocampal neurons, a model of neuronal aging.
03:10
Establishing a Model of Zika Virus-Induced Neurodegeneration in an Adult Mouse
0 Views •
2025
The video demonstrates intracerebral injection of Zika virus suspension in an adult mouse to induce neurodegeneration. An anesthetized mouse is secured in a stereotaxic frame, and a hole is drilled into the exposed skull for injection. A suspension of the Zika virus is injected into the brain tissue. The viral infection causes inflammation, leading to neurodegeneration.
FAQs
Cellular stress and impaired energy regulation weaken the conditions neurons need to maintain synaptic communication and survive. As these disturbances persist, hippocampal neurons may lose functional connections before broader neuronal loss becomes evident. Studying these processes helps medical researchers connect early cellular dysfunction with later changes in memory, learning, and spatial navigation.
Abnormal protein accumulation and inflammation represent distinct forms of cellular disruption that can interfere with hippocampal neuronal function. Their presence may help explain why synaptic communication deteriorates and why neuronal survival declines over time. Measuring these processes can therefore support investigations into disease mechanisms and potential targets for preserving hippocampal function.
Excessive excitatory signaling can disrupt the balance required for stable synaptic communication. When this disturbance persists, hippocampal neurons may experience cellular stress that reduces their ability to maintain connections and remain viable. This mechanism is particularly relevant when researchers examine how abnormal neural activity contributes to progressive damage and cognitive decline.
The same hippocampal changes can be studied in different medical contexts, including Alzheimer’s disease and temporal lobe epilepsy, but the research questions may differ. Investigators use the changes to help distinguish causes of cognitive decline, relate damage to disease processes, and assess whether biomarkers, imaging measures, or treatments capture meaningful differences between disorders.
A study commonly examines hippocampal cellular or structural changes, relates them to disrupted synaptic communication and neuronal survival, and then evaluates their relevance to cognitive decline. Researchers may combine experimental models with biomarkers or imaging measures, depending on the question. This workflow supports comparisons among disease mechanisms, progression, and responses to potential treatments.
Biomarkers and imaging measures are important tools for evaluating hippocampal changes. They can help researchers characterize disease-related damage, distinguish possible causes of cognitive decline, and monitor whether an intervention is associated with preserved hippocampal function. Their value lies in connecting measurable biological or structural changes with medical questions about progression and treatment.
Experimental models allow researchers to investigate mechanisms of hippocampal damage and test strategies aimed at neural repair or preservation. They can support controlled studies of cellular stress, abnormal protein accumulation, impaired energy regulation, inflammation, and excessive excitatory signaling. Findings from these models help guide evaluation of biomarkers, imaging measures, and treatments relevant to human neurological disorders.