Dopamine Neurons
Dopamine Neurons - Related Videos
04:04
Isolation and Culture of Primary Embryonic Mouse Midbrain Dopamine Neurons
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2025
The video demonstrates the process of isolating and culturing dopamine neurons from the midbrain of mouse embryos. The isolated ventral midbrain floors are dissociated using enzymes. The resulting dopamine neurons are harvested and transferred into micro-islands inside multi-well plates. The cells are incubated with a dopamine neuron medium to maintain the cells at a high density inside the micro-islands.
02:42
Immunohistochemistry of Mouse Brain Tissue Sections for Targeting Dopamine Neurons
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2025
Source: Kummari, E., et. al., Laser Capture Microdissection - A Demonstration of the Isolation of Individual Dopamine Neurons and the Entire Ventral Tegmental Area., J. Vis. Exp. (2015)In this video, we demonstrate the immunohistochemistry protocol for dopamine neurons in brain tissue sections for subsequent laser capture microdissection.
02:09
Monitoring Dopamine Release in a Rat Model with VTA Dopaminergic Neuron Receptor Manipulation
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2025
This video demonstrates the implantation of electrodes and cannulas in an anesthetized rat to measure dopamine release in the nucleus accumbens using a potentiostat and the infusion of drugs to modulate dopaminergic activity in the ventral tegmental area.
09:35
Environmental Modulations of the Number of Midbrain Dopamine Neurons in Adult Mice
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Cited by 12 •
2015
This protocol describes two different environmental manipulations and a concurrent brain infusion protocol to study environmentally-induced brain changes underlying adaptive behavior and brain repair in adult mice.
05:01
Measuring Dopamine Uptake in Mouse Brain Synaptosomes Using Radiolabeled Dopamine
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2025
This video demonstrates the assessment of dopamine uptake in synaptosomes harvested from mouse brains. It outlines steps for preparing synaptosomes for dopamine uptake via dopamine transporters, treating them with varying concentrations of radiolabeled dopamine, isolating the synaptosomes, and measuring radioactivity to quantify dopamine uptake.
FAQs
An action potential provides the electrical event that triggers dopamine release at a synapse. Once released, dopamine binds receptors on a target cell and changes that cell’s activity. This sequence links the neuron’s electrical state to effects in connected neural circuits, allowing researchers to relate cellular signaling to movement, motivation, learning, and reward.
Transporters and enzymes limit dopamine signaling after the neurotransmitter has acted at its receptors. Transporters regulate dopamine removal, while enzymes regulate its breakdown. Studying these processes helps explain how the signal is terminated or controlled and how changes in chemical regulation may influence the activity of neural circuits involved in behavior and motor control.
Dopamine receptors determine how target cells respond when dopamine is released at a synapse. Receptor binding alters the activity of those cells, which can influence the larger neural circuits connected to them. Examining this receptor-mediated step helps connect dopamine release with behavioral and motor outcomes rather than treating neurotransmitter release as an isolated event.
Their activity contributes to neural circuits that support several distinct functions, including movement, motivation, learning, and reward. This broad involvement makes dopamine neurons useful for studying how brain circuits connect cellular signaling with behavior. It also provides a biological framework for investigating why altered dopamine-related activity can be associated with both motor and behavioral disorders.
Experimental models and imaging methods allow researchers to examine dopamine neurons across development, learning, and disease. These approaches can be used to investigate how the cells and their associated circuits change over time or under different biological conditions. Together, they support analysis of cellular adaptation while connecting observed changes to behavior, motor control, or disorder-related processes.
Dopamine neurons are relevant to Parkinson’s disease research because their associated neural circuits contribute to motor control, and they are relevant to addiction research because they participate in motivation, learning, and reward. Studying their signaling, regulation, and adaptation helps researchers examine how cellular and circuit changes relate to these distinct disease contexts.