Expression of cGMP-Specific Phosphodiesterase 9A mRNA in the Rat Brain

cGMP has been implicated in the regulation of many essential functions in the brain, such as synaptic plasticity, phototransduction, olfaction, and behavioral state. Cyclic nucleotide phosphodiesterase (PDE) hydrolysis of cGMP is the major mechanism underlying the clearance of cGMP and is likely to...

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Bibliographic Details
Published in:The Journal of neuroscience 2001-11, Vol.21 (22), p.9068-9076
Main Authors: Andreeva, Svetlana G, Dikkes, Pieter, Epstein, Paul M, Rosenberg, Paul A
Format: Article
Language:English
Subjects:
3',5'-Cyclic-AMP Phosphodiesterases - genetics
3',5'-Cyclic-AMP Phosphodiesterases - metabolism
Animals
Blotting, Northern
Brain - cytology
Brain - metabolism
Cerebellum - cytology
Cerebellum - metabolism
Cyclic GMP - metabolism
Hippocampus - cytology
Hippocampus - metabolism
In Situ Hybridization
Male
Organ Specificity
Prosencephalon - metabolism
Rats
Rats, Sprague-Dawley
Rhombencephalon - cytology
Rhombencephalon - metabolism
RNA, Messenger - biosynthesis
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Summary:cGMP has been implicated in the regulation of many essential functions in the brain, such as synaptic plasticity, phototransduction, olfaction, and behavioral state. Cyclic nucleotide phosphodiesterase (PDE) hydrolysis of cGMP is the major mechanism underlying the clearance of cGMP and is likely to be important in any process that depends on intracellular cGMP. PDE9A has the highest affinity for cGMP of any PDE, and here we studied the localization of this enzyme in the rat brain using in situ hybridization. PDE9A mRNA is widely distributed throughout the brain with varying regional expression. The pattern of PDE9A mRNA expression closely resembles that of soluble guanylyl cyclase (sGC) in the rat brain, suggesting a possible functional association or coupling of these two enzymes in the regulation of cGMP levels. Most of the brain areas expressing PDE9A mRNA also contain neuronal nitric oxide synthase (NOS), the enzymatic source of NO and the principal activator of sGC. PDE9A is the only cGMP-specific PDE with significant expression in the forebrain, and as such is likely to play an important role in NO-cGMP signaling.
ISSN:0270-6474
1529-2401
DOI:10.1523/jneurosci.21-22-09068.2001