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Updated: Jun 21, 2025
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Physiological, Morphological and Neurochemical Characterization of Neurons Modulated by Movement
Published on: April 21, 2011
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Understanding electrical and chemical transmission in the brain
Dasiel O Borroto-Escuela1,2, Emmanuell Gonzalez-Cristo2, Verty Ochoa-Torres2,3
1Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
Frontiers in Cellular Neuroscience
|July 11, 2024
Summary
The study explores volume transmission (VT), a form of neurotransmission in the central nervous system (CNS). VT involves chemical communication through extracellular fluid, complementing traditional synaptic transmission and potentially influencing systems like acupuncture meridians.
Area of Science:
- Neuroscience
- Cellular Biology
- Neurochemistry
Background:
- The Falck-Hillarp method (1960s) revealed monoamine pathways in the CNS, supporting chemical neurotransmission.
- Early research suggested neurotransmitters like dopamine (DA), noradrenaline (NA), and serotonin communicate via synaptic and extra-synaptic routes.
- Volume Transmission (VT) was defined in 1986 as a mode of chemical communication through extracellular and cerebrospinal fluids.
Purpose of the Study:
- To investigate the integration of chemical and electrical transmission in the CNS.
- To explore the role of astrocyte complexes (aquaporin, D2R, A2AR) in waste clearance via the glymphatic system.
- To understand the potential link between VT and the functional pathways of acupuncture meridians.
Main Methods:
- Histochemical localization of neurotransmitters (DA, NA, serotonin).
- Analysis of monoamine neuron systems (ascending and descending).
- Characterization of VT pathways by volume fraction, tortuosity, and clearance.
- Examination of electrical transmission modes (gap junctions, synaptic currents).
Main Results:
- Monoamine neurons form distinct ascending and descending systems in the CNS.
- Evidence suggests neurotransmitters diffuse through extracellular and cerebrospinal fluids (VT).
- Electrical transmission, via gap junctions and synaptic currents, also exists but chemical transmission dominates.
Conclusions:
- Chemical transmission, particularly VT, plays a significant role in CNS communication.
- Astrocyte complexes may be crucial for waste clearance and glymphatic system function.
- VT pathways may underlie the functional mechanisms of acupuncture meridians in traditional Chinese medicine.
Keywords:
acupuncturechemical transmissionelectrical fieldselectrical transmissiongap junctionglymphatic systemsynaptic chemical transmissionvolume transmissionMore Related Videos
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