Cited by 91Biofield Effects and BiophysicsNeuroscience and Neuropharmacology ResearchNeural dynamics and brain function

Spatiotemporal Imaging of Glutamate-Induced Biophotonic Activities and Transmission in Neural Circuits

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Tang, Rendong, Dai, Jiapei·2014·PLoS ONE

Abstract

The processing of neural information in neural circuits plays key roles in neural functions. Biophotons, also called ultra-weak photon emissions (UPE), may play potential roles in neural signal transmission, contributing to the understanding of the high functions of nervous system such as vision, learning and memory, cognition and consciousness. However, the experimental analysis of biophotonic activities (emissions) in neural circuits has been hampered due to technical limitations. Here by developing and optimizing an in vitro biophoton imaging method, we characterize the spatiotemporal biophotonic activities and transmission in mouse brain slices. We show that the long-lasting application of glutamate to coronal brain slices produces a gradual and significant increase of biophotonic activities and achieves the maximal effect within approximately 90 min, which then lasts for a relatively long time (>200 min). The initiation and/or maintenance of biophotonic activities by glutamate can be significantly blocked by oxygen and glucose deprivation, together with the application of a cytochrome c oxidase inhibitor (sodium azide), but only partly by an action potential inhibitor (TTX), an anesthetic (procaine), or the removal of intracellular and extracellular Ca(2+). We also show that the detected biophotonic activities in the corpus callosum and thalamus in sagittal brain slices mostly originate from axons or axonal terminals of cortical projection neurons, and that the hyperphosphorylation of microtubule-associated protein tau leads to a significant decrease of biophotonic activities in these two areas. Furthermore, the application of glutamate in the hippocampal dentate gyrus results in increased biophotonic activities in its intrahippocampal projection areas. These results suggest that the glutamate-induced biophotonic activities reflect biophotonic transmission along the axons and in neural circuits, which may be a new mechanism for the processing of neural information.

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  1. [6]Purves D, Augustine GJ, Fitzpatrick D, Katz LC, LaMantia A, et al (2012) Neuroscience. 5nd Edition. Massachusetts: Sinauer Associates, Inc. Sunderland

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Authors
Tang, R., & Dai, J.
Affiliations
South Central Minzu University (CN)
Corresponding author
Dai, Jiapei
Venue
PLoS ONE
Published
2014-01-15
Volume
9
Issue
1
Pages
e85643
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1977345460
Cited by
91
References
45
Citations by year
2026: 9 · 2025: 9 · 2024: 10 · 2023: 5 · 2022: 8 · 2021: 6 · 2020: 7 · 2019: 8 · 2018: 7 · 2017: 6 · 2016: 7 · 2015: 6 · 2014: 2 · 2013: 1
FWCI
4.67
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • National Natural Science Foundation of China (31070961)
  • South-Central University for Nationalities (XJS09001)
Topics
  • Health Sciences › Medicine › Physiology › Biofield Effects and Biophysics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
biophotons, ultraweak photon emission, glutamate, neural transmission, neural circuits, oxygen-glucose deprivation, sodium azide, tau hyperphosphorylation, corpus callosum, thalamus, dentate gyrus, cortical projection neurons, mouse brain slices
MeSH terms
Action Potentials, Animals, Luminescent Measurements, Male, Nerve Net, Synaptic Transmission, Neurons, Glutamic Acid, Dentate Gyrus, Luminescence, Mice, In Vitro Techniques

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