Hippocampal Glutamate
Hippocampal Glutamate - Related Videos
05:27
An In Vitro Technique to Study Glutamate Receptor Trafficking in Hippocampal Neurons
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2025
This video demonstrates an antibody-feeding approach to study the trafficking of glutamate receptors in primary hippocampal neuronal cultures. This approach allows the observation of receptor populations at both the plasma and internal membranes. Discrimination between these subsets is achieved by labeling the receptors before and after membrane permeabilization, using the same primary antibody but secondary antibodies conjugated to different fluorophores.
08:13
An Antibody Feeding Approach to Study Glutamate Receptor Trafficking in Dissociated Primary Hippocampal Cultures
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Cited by 7 •
2019
This article presents a method to study glutamate receptor (GluR) trafficking in dissociated primary hippocampal cultures. Using an antibody-feeding approach to label endogenous or overexpressed receptors in combination with pharmacological approaches, this method allows for the identification of molecular mechanisms regulating GluR surface expression by modulating internalization or recycling processes.
04:10
Analyzing the Glutamate Release and Clearance at a Single Neuron Synapse in a Mouse Brain Slice
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2025
This video demonstrates evaluating glutamate release and clearance at single corticostriatal synapses in a mouse brain slice. Electrical stimulation facilitates glutamate release at the synapse. The released glutamate alters sensor protein's fluorescence, which decays over time, indicating release and clearance efficiency.
07:48
Glutamate and Hypoxia as a Stress Model for the Isolated Perfused Vertebrate Retina
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Cited by 16 •
2015
With this study, we introduce a standardized stress model for the isolated superfused bovine retina for future preclinical therapeutic testing. The effect of either hypoxia (pure N2) or glutamate stress (250 µM glutamate) on retinal function represented by a- and b-wave amplitudes was evaluated.
08:20
Organotypic Hippocampal Slice Cultures
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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.
FAQs
AMPA and NMDA receptors contribute complementary stages of synaptic communication. AMPA receptor activation helps depolarize the postsynaptic membrane, while NMDA receptor activity permits calcium to enter the receiving neuron. This division allows glutamate transmission to produce both immediate electrical responses and cellular signals associated with longer-lasting synaptic strengthening, making receptor cooperation important for learning and memory mechanisms.
Calcium entry through NMDA receptors provides a key intracellular signal that can alter the strength of a synapse. In the hippocampus, this signal connects glutamate receptor activation with long-term synaptic strengthening rather than only a brief electrical response. Consequently, NMDA-mediated calcium influx is central to studying how neural communication can be modified during learning and memory.
Glutamate transporters help remove glutamate from the signaling environment, limiting continued receptor stimulation after release. The glutamate–glutamine cycle supports the regulated handling of this transmitter between signaling and replenishment processes. Together, these mechanisms help preserve controlled communication at hippocampal synapses and reduce the possibility that excessive stimulation will disrupt neuronal function.
These studies can connect receptor activity and synaptic strengthening with the cellular basis of learning and memory. Investigators can examine how glutamate communication changes the effectiveness of hippocampal synapses and how regulation by transporters influences that process. The resulting evidence helps explain how patterns of neuronal communication may support memory-related functions without reducing them to electrical activity alone.
Hippocampal glutamate is relevant because excessive stimulation can disturb normal neural communication and contribute to excitotoxicity, a harmful consequence of overstimulated neurons. Transporter regulation and receptor activity therefore become important research considerations when studying abnormal excitation. This framework also helps connect synaptic mechanisms in the hippocampus with investigations of epilepsy and related disruptions in neuronal signaling.
Research can evaluate several linked points of failure: glutamate release, AMPA or NMDA receptor responses, calcium entry, synaptic strengthening, and transmitter clearance. Comparing these processes helps identify whether altered communication arises from receptor signaling, regulation by transporters, or excessive stimulation. Such analysis provides a neuroscience context for investigating memory disorders and other conditions involving impaired hippocampal communication.