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Printable Handouts
Navigable Slide Index
- Introduction
- Enteric glial cells
- Acknowledgements (1)
- The gastrointestinal (GI) tract
- Digestion is a dangerous process
- Enteric nervous system (ENS)
- The anatomy of the ENS
- The gut and its brain
- Enteric glia - discovery
- Enteric glia
- Neuroglial junctions
- Enteric glia surround enteric neurons (1)
- Enteric glia surround enteric neurons (2)
- Enteric glia surround enteric neurons (3)
- Four types of enteric glia in the gut wall (1)
- Four types of enteric glia in the gut wall (2)
- Mucosal enteric glia
- Mucosal enteric glia: epithelial barrier function (1)
- Mucosal enteric glia: epithelial barrier function (2)
- Mucosal enteric glia: epithelial barrier function (3)
- Mucosal enteric glia & burn injury
- Epithelial cell differentiation and proliferation (1)
- Epithelial cell differentiation and proliferation (2)
- Intraganglionic enteric glia
- Enteric glia “listen” to enteric nerves (1)
- Enteric glia “listen” to enteric nerves (2)
- Evidence for mGluR5 activation
- Calcium imaging to visualize activity in enteric glia
- ATP stimulates enteric glia in situ (1)
- ATP stimulates enteric glia in situ (2)
- Do enteric glia respond to neuronal activity?
- Glial Ca2+ responses in situ (1)
- Glial Ca2+ responses in situ (2)
- Neurons directly activate glial cells
- Enteric glia express P2Y4 and not P2Y11
- Summary (1)
- Selectivity to glial cell activation
- Neuronal component(s) “talk” to glia
- Enteric glia detect activity in neural pathways
- Nicotinic stimulation of enteric neurons
- Myenteric P2X7 expression and function
- P2X7 neuron-to-glia communication (1)
- P2X7 neuron-to-glia communication (2)
- Glial ectonucleotidases regulate responses
- Pannexin-1 channels
- Neurons release ATP via pannexin-1 channels
- Enteric glia monitor extracellular purines
- Enteric glia and colonic migrating motor complex
- Functional glial ablation
- Gliogenesis and neurogenesis
- Gliogenesis in the ENS
- GFAP expression is enhanced in colitis
- Neurogenesis
- Summary (2)
- Functional subpopulation of enteric glia
- Enteric glia – key points
- Acknowledgements (2)
- References
Topics Covered
- The gut and its brain
- Anatomy and distribution of enteric glia
- Mucosal enteric glia
- Intraganglionic enteric glia
- Gliogenesis and neurogenesis
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Talk Citation
Sharkey, K.A. (2013, June 20). Enteric glia: the glue of the enteric nervous system [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved December 26, 2024, from https://doi.org/10.69645/FWOL5751.Export Citation (RIS)
Publication History
Financial Disclosures
- Dr. Keith A. Sharkey has not informed HSTalks of any commercial/financial relationship that it is appropriate to disclose.
A selection of talks on Neuroscience
Transcript
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0:00
My name is Keith Sharkey.
I'm a professor of physiology and pharmacology,
at the Hotchkiss Brain Institute at the University of Calgary in Alberta, Canada.
I'm going to discuss enteric glia,
the "glue" of the enteric nervous system.
0:17
In this presentation, I'm going to discuss with you enteric glial cells,
both from an anatomical and functional standpoint,
within the enteric nervous system of the gut.
"Glue" refers to the term glia,
which were originally thought to be
just largely supportive elements within the nervous system.
But we now know the glia play a much more important role than
simply the holding the nervous system together, as it were.
They have important metabolic and functional roles in terms of neurotransmission,
and the enteric nervous system is no exception.
Whilst we know far less about how the glia of
the enteric nervous system work relative to what we
know about astrocytes or oligodendrocytes within the brain,
I'd like to share with you some of our understanding of the role of enteric glia
within this important part of the autonomic nervous system.
1:22
Before I begin, I'd just like to acknowledge the assistance that I've had from Dr. Brian Gulbransen,
an Assistant Professor in the Department of Physiology at Michigan State University,
who helped make some of the slides in this presentation and contributed
importantly to the development of many of the ideas that I'm presenting.
I would like to thank Yasmin Nasser,
who was a graduate student,
and also contributed to some of the data that I'm presenting from my own lab,
and some of the ideas we've developed in this area.
Much of the work done in my lab has been performed by Winnie Ho and Cathy McNaughton,
and I would like to acknowledge their contributions,
and finally, I would like to thank
my many collaborators who helped contribute to the original data that I'm presenting,
and I would like to acknowledge my colleagues in the field whose work
that I'm presenting in various slides as part of this presentation.