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Agonists calcitonin, corticotropin‐releasing hormone, and vasoactive intestinal peptide, but not prostaglandins or β‐adrenergic agonists, elevate cyclic adenosine monophosphate levels in oligodendroglial cells
Author(s) -
Wiemelt Anthony P.,
Lehtinen Maria,
McMorris F. Arthur
Publication year - 2001
Publication title -
journal of neuroscience research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.72
H-Index - 160
eISSN - 1097-4547
pISSN - 0360-4012
DOI - 10.1002/jnr.1139
Subject(s) - cyclic adenosine monophosphate , forskolin , medicine , endocrinology , agonist , adenosine , calcitonin , vasoactive intestinal peptide , cyclase , hormone , cyclic nucleotide , biology , receptor , chemistry , neuropeptide , biochemistry , nucleotide , gene
Abstract Although 3′,5′‐cyclic AMP (cAMP) is known to regulate oligodendrocyte development in vitro, little is known about the identity of agonists that induce cAMP synthesis in oligodendroglia. To identify such agonists, we used a novel immunohistochemical method of visualizing cAMP within single cells to screen compounds that are known to activate cAMP synthesis in other cellular systems. Calcitonin, corticotropin‐releasing hormone, and vasoactive intestinal peptide elevated cAMP in oligodendroglial cells but not in other cell types present in the cultures (i.e., astrocytes and microglia). In contrast, prostaglandins and the β‐adrenergic agonist isoproterenol, which have previously been reported to induce modest increases in oligodendroglial cell cAMP from biochemical assay of cell homogenates, did not induce a detectable cAMP response in individually identified oligodendroglial cells but instead induced a robust cAMP response in nonoligodendroglial cells. J. Neurosci. Res. 65:165–172, 2001. © 2001 Wiley‐Liss, Inc.