Mineralocorticoid Receptors in the Mammalian Olfactory Mucosa

Mineralocorticoid hormones regulate secretion and absorption in a wide variety of epithelial tissues, although specific mechanisms in the olfactory mucosa are currently unknown. Utilizing reverse transcription—polymerase chain reaction (RT-PCR) analysis, we have demonstrated the expression of minera...

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Veröffentlicht in:Annals of otology, rhinology & laryngology rhinology & laryngology, 1999-10, Vol.108 (10), p.974-981
Hauptverfasser: Robinson, Alan M., Kern, Robert C., Krozowski, Zygmunt S., Foster, James D., Pitovski, Dimitri Z.
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container_issue 10
container_start_page 974
container_title Annals of otology, rhinology & laryngology
container_volume 108
creator Robinson, Alan M.
Kern, Robert C.
Krozowski, Zygmunt S.
Foster, James D.
Pitovski, Dimitri Z.
description Mineralocorticoid hormones regulate secretion and absorption in a wide variety of epithelial tissues, although specific mechanisms in the olfactory mucosa are currently unknown. Utilizing reverse transcription—polymerase chain reaction (RT-PCR) analysis, we have demonstrated the expression of mineralocorticoid (type I) receptor messenger RNA in the rodent olfactory mucosa. Amplification products of predicted size were obtained with nucleotide sequences corresponding to respective mineralocorticoid receptor (MR) kidney transcripts. Immunocytochemistry, using an antibody with known specificity for MRs, was then utilized in order to localize the cellular site(s) of MR protein expression in the olfactory mucosa. The highest levels of MR immunoreactivity were localized to the supranuclear region of sustentacular cells, as well as the acinar cells of the Bowman's glands. The respiratory regions of the nasal cavity were devoid of appreciable MR immunoreactivity. This study demonstrates both MR transcript and protein expression in the olfactory mucosa. We hypothesize that the mineralocorticoid hormones may have a role in modulation of olfactory secretion and/or sensory transduction in the peripheral olfactory system.
doi_str_mv 10.1177/000348949910801009
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subjects Animals
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Gene Expression - genetics
Guinea Pigs
Mice
Olfactory Mucosa - cytology
Olfactory Mucosa - metabolism
Olfactory system and olfaction. Gustatory system and gustation
Rats
Receptors, Mineralocorticoid - metabolism
Vertebrates: nervous system and sense organs
title Mineralocorticoid Receptors in the Mammalian Olfactory Mucosa
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