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Related Concept Videos

Endocrine Signaling01:45

Endocrine Signaling

Endocrine cells produce hormones to communicate with remote target cells found in other organs. The hormone reaches these distant areas using the circulatory system. This exposes the whole organism to the hormone but only those cells expressing hormone receptors or target cells are affected. Thus, endocrine signaling induces slow responses from its target cells but these effects also last longer.
Ligand-Gated Ion Channel Receptor: Gating Mechanism01:30

Ligand-Gated Ion Channel Receptor: Gating Mechanism

Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
Glial Cells01:04

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Adrenergic Receptors: ɑ Subtype01:31

Adrenergic Receptors: ɑ Subtype

Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
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Sympathetic Signaling01:31

Sympathetic Signaling

Sympathetic signaling, a vital part of the autonomic nervous system, plays a crucial role in mobilizing the body's resources in response to stress or emergencies. It involves the transmission of nerve impulses from sympathetic preganglionic fibers to postganglionic fibers. This results in the release of specific neurotransmitters and activation of adrenergic receptors.
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GPCRs Regulate Adenylyl Cylase Activity01:09

GPCRs Regulate Adenylyl Cylase Activity

Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of cells.
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Related Experiment Video

Updated: Jun 20, 2026

A Cell Culture Model for Studying the Role of Neuron-Glia Interactions in Ischemia
11:36

A Cell Culture Model for Studying the Role of Neuron-Glia Interactions in Ischemia

Published on: November 14, 2020

Adenosine signaling and function in glial cells.

D Boison1, J-F Chen, B B Fredholm

  • 1Robert Stone Dow Neurobiology Laboratories, Legacy Research, Portland, OR 97232, USA. dboison@downeurobiology.org

Cell Death and Differentiation
|September 19, 2009
PubMed
Summary
This summary is machine-generated.

Glial cells regulate adenosine, a key brain protector. Targeting glial adenosine pathways offers a promising new strategy for treating neurodegenerative diseases and neurological disorders.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Pharmacology

Background:

  • Neurodegenerative and neurological diseases remain poorly managed with current neurocentric drugs.
  • Recent research highlights the critical role of glial cells in neuronal function and disease pathology.
  • Glial cells are central regulators of endogenous adenosine, a neuroprotectant and anticonvulsant.

Purpose of the Study:

  • To review the role of glial cells in adenosine homeostasis and function.
  • To explore glial interactions with neurons and vasculature.
  • To discuss implications for neurodegenerative diseases and potential therapeutic strategies.

Main Methods:

  • Literature review focusing on research from the past 5 years.
  • Analysis of glial cell contributions to adenosine regulation.
  • Examination of glial adenosine receptors' impact on glial and neuronal function.

Main Results:

  • Glial cells significantly influence adenosine homeostasis and function.
  • Glial adenosine signaling impacts neuronal cell death.
  • Dysfunctional glial cells are implicated in numerous neurological conditions.

Conclusions:

  • Glial cells are crucial for brain health and adenosine regulation.
  • Targeting glial adenosine pathways presents a novel therapeutic avenue for neurodegenerative diseases.
  • Further research is needed to address open questions in glial cell-based therapies.