Abstract
Multiple sclerosis (MS) is characterized by demyelinating lesions disseminated throughout the central nervous system, and a progressive axonal degeneration. In this review we propose that an impaired cAMP signaling in white mater astrocytes, caused by a deficiency of β2-adrenergic receptors, may play a role in the pathogenesis of the disease. Reduced astrocytic cAMP signaling may, in a proinflammatory environment, facilitate astrocytes to become facultative antigen presenting cells, stimulating the development of inflammatory demyelinating lesions. It may reduce astrocytic glycogenolysis, which supplies energy and N-acetylaspartate (NAA) to axons and oligodendrocytes, reduce trophic and neuroprotective support to oligodendrocytes and neurons, and enhance astrogliosis.
Keywords: Multiple sclerosis, astrocytes, β2-adrenergic receptors, cAMP, demyelination, axonal degeneration, astrocyte signaling, immune hypothesis, impaired energy metabolism, plasma cells
Current Signal Transduction Therapy
Title: Astrocyte Signaling and Multiple Sclerosis
Volume: 7 Issue: 1
Author(s): Miguel D'haeseleer, Melissa Cambron and Jacques De Keyser
Affiliation:
Keywords: Multiple sclerosis, astrocytes, β2-adrenergic receptors, cAMP, demyelination, axonal degeneration, astrocyte signaling, immune hypothesis, impaired energy metabolism, plasma cells
Abstract: Multiple sclerosis (MS) is characterized by demyelinating lesions disseminated throughout the central nervous system, and a progressive axonal degeneration. In this review we propose that an impaired cAMP signaling in white mater astrocytes, caused by a deficiency of β2-adrenergic receptors, may play a role in the pathogenesis of the disease. Reduced astrocytic cAMP signaling may, in a proinflammatory environment, facilitate astrocytes to become facultative antigen presenting cells, stimulating the development of inflammatory demyelinating lesions. It may reduce astrocytic glycogenolysis, which supplies energy and N-acetylaspartate (NAA) to axons and oligodendrocytes, reduce trophic and neuroprotective support to oligodendrocytes and neurons, and enhance astrogliosis.
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Cite this article as:
D'haeseleer Miguel, Cambron Melissa and De Keyser Jacques, Astrocyte Signaling and Multiple Sclerosis, Current Signal Transduction Therapy 2012; 7 (1) . https://dx.doi.org/10.2174/157436212799278133
DOI https://dx.doi.org/10.2174/157436212799278133 |
Print ISSN 1574-3624 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-389X |
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