Astrocyte Signaling and Multiple Sclerosis

Author(s): Miguel D'haeseleer , Melissa Cambron , Jacques De Keyser .

Journal Name: Current Signal Transduction Therapy

Volume 7 , Issue 1 , 2012

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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

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Article Details

VOLUME: 7
ISSUE: 1
Year: 2012
Page: [14 - 19]
Pages: 6
DOI: 10.2174/157436212799278133

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