Nmda Receptors
Nmda Receptors - Related Videos
06:42
Application of a NMDA Receptor Conductance in Rat Midbrain Dopaminergic Neurons Using the Dynamic Clamp Technique
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Cited by 5 •
2010
In this video, we demonstrate how to apply a conductance into a dopaminergic neuron recorded in the whole cell configuration in rat brain slices. This technique is called the dynamic clamp.
01:30
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
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2024
Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function. They...
07:11
Examination of Anatomical Features of Retinal Ganglion Cells Under N-methyl-D-aspartic Acid (NMDA)-induced Excitotoxicity
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2025
Here, we describe the use of a genetically directed alkaline phosphatase (AP) labeling method to investigate the anatomical features and phenotypes of mouse retinas under NMDA-induced excitotoxicity. In conjunction with several retinal ganglion cell (RGC) subtype-specific reporter lines, we uncover novel phenotypes in dying RGCs throughout the degenerative process.
04:48
A High-throughput Calcium-flux Assay to Study NMDA-receptors with Sensitivity to Glycine/D-serine and Glutamate
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Cited by 1 •
2018
The goal of this protocol is to facilitate the study of NMDA-receptors (NMDAR) at a larger scale and allow the examination of modulatory effects of small molecules and their therapeutic applications.
07:20
A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate (NMDA) Receptor in Blood
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Cited by 1 •
2018
We ectopically expressed NR1 subunit of NMDA receptor tagged with green fluorescent protein in human embryonic cells (HEK293) as antigen to detect autoantibodies against NMDA receptor in the blood of patients suspected with autoimmune encephalitis. This simple method may be suitable for screening purposes in clinical settings.
FAQs
Coincidence detection makes receptor activation dependent on both chemical and electrical conditions at the synapse. Glutamate provides the chemical signal, while postsynaptic depolarization removes the magnesium block. This requirement filters isolated inputs and identifies activity in which neurotransmitter release and postsynaptic excitation occur together, helping explain why NMDA receptors are central to models of learning-related synaptic plasticity.
The magnesium block acts as a voltage-dependent gate rather than a permanent obstruction. When the postsynaptic membrane remains insufficiently depolarized, it limits ion passage even if glutamate is present. Depolarization relieves that block, allowing the receptor to contribute to excitatory signaling only when chemical stimulation is accompanied by the appropriate electrical state.
The combined ion movement links receptor activation to changes in cellular electrical and signaling conditions. Calcium entry is especially relevant because NMDA receptor activity supports synaptic plasticity, while sodium entry and potassium exit contribute to the receptor's influence on excitation. In engineered models, representing these ion flows helps connect molecular events with neural activity.
Engineered neural systems can represent NMDA receptor activity as a rule requiring coincident glutamate signaling and postsynaptic depolarization. Including the voltage-dependent magnesium block and associated ion movements allows models to distinguish chemically stimulated activity from activity that also reaches the required electrical state. Such representations help examine how synaptic signaling contributes to learning and broader network behavior.
Receptor-based assays provide an experimental framework for examining how candidate conditions or compounds affect NMDA receptor-mediated signaling. Their relevance extends beyond basic receptor study because the overview identifies drug screening and neurotoxicity studies as key uses. In bioengineering, these assays can therefore connect controlled receptor responses with evaluation of substances or interventions affecting neural systems.
Biomaterials can be used as engineered platforms for strategies that regulate synaptic signaling involving NMDA receptors. Their value lies in providing a designed context in which receptor-related activity can be studied or controlled, complementing receptor-based assays. This connects molecular neurobiology with bioengineering approaches aimed at shaping neural environments and examining consequences for excitatory communication.
NMDA receptors connect several levels of analysis that bioengineering often seeks to integrate: neurotransmitter binding, membrane voltage, ion movement, synaptic plasticity, and network activity. That combination supports computational models of learning, experimental assays for screening and toxicity, and biomaterial-based approaches to regulating signaling. Their study therefore links molecular mechanisms with engineered neural-system design.