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Title: Distribution of preproatrial natriuretic peptide mRNA in rat brain detected by in situ hybridization of DNA oligonucleotides: enrichment in hypothalamic and limbic regions.
Austin Authors: Gundlach, Andrew L;Knobe, K E
Affiliation: University of Melbourne, Department of Medicine, Austin Hospital, Heidelberg, Victoria, Australia
Issue Date: 1-Aug-1992
Publication information: Journal of Neurochemistry; 59(2): 758-61
Abstract: The expression and distribution of mRNA encoding preproatrial natriuretic peptide (ppANP) in rat brain has been investigated by in situ hybridization of two 35S-labeled synthetic DNA oligonucleotides, based on a cDNA clone sequence that encodes rat ppANP. The highest relative concentrations of ppANP mRNA were detected in the medial preoptic hypothalamic nucleus ("anteroventral/third ventricle region") and the medial habenula. Moderate concentrations of ppANP mRNA were observed in the CA1 pyramidal cells of the hippocampus, the endopiriform nucleus, the arcuate nucleus, the zona incerta, and cells of the pontine tegmental and peduculopontine nuclei. Several of these regions, including the habenula and the hypothalamic areas, have previously been reported to contain atrial natriuretic peptide (ANP)-like immunoreactivity, but the expression of ppANP mRNA in CA1 pyramidal cells suggests the occurrence of differential translation of ppANP mRNA into protein product in different brain regions, or the existence of different immunological forms of the peptide. The abundance of ppANP mRNA in brain was relatively low in comparison with that previously reported for many other mRNA species encoding other brain neuropeptides. These results demonstrate that ANP gene expression occurs in discrete neuronal populations of the CNS and that studies of the regulation of this expression should now be possible using quantitative in situ hybridization.
Gov't Doc #: 1385830
Journal: Journal of neurochemistry
Type: Journal Article
Subjects: Animals
Atrial Natriuretic Factor.genetics
Base Sequence
Gene Expression.genetics
Limbic System.chemistry
Molecular Sequence Data
Nucleic Acid Hybridization
Oligonucleotide Probes
Protein Precursors.genetics
RNA, Messenger.analysis.genetics
Rats, Inbred Strains
Sulfur Radioisotopes
Appears in Collections:Journal articles

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