Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation

Rodents from arid and semiarid environments live under conditions where the spatial and temporal availability of water is limited. Octodon degus is a South-American desert-dwelling rodent inhabiting arid and semiarid habitats of central and northern Chile. Its survival depends on morphological, phys...

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Autores principales:	GALLARDO,PEDRO, HERRERA,SOFÍA, SAFFER,KARIN, BOZINOVIC,FRANCISCO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2008
Materias:	aquaporin nasal passage desert rodent
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100003
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spelling	oai:scielo:S0716-078X20080001000032008-05-14Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservationGALLARDO,PEDROHERRERA,SOFÍASAFFER,KARINBOZINOVIC,FRANCISCO aquaporin nasal passage desert rodent Rodents from arid and semiarid environments live under conditions where the spatial and temporal availability of water is limited. Octodon degus is a South-American desert-dwelling rodent inhabiting arid and semiarid habitats of central and northern Chile. Its survival depends on morphological, physiological and behavioral adaptations that allow water conservation. This rodent has a high urine concentrating ability, high capacity of fecal dehydration and low evaporative water loss, related to the ability of the nasal passages to condense water from the exhaled air; this water must be absorbed in order to avoid its accumulation in the nasal passages and potential loss through the nostrils. We hypothesize that aquaporins (AQPs) might be present in the nasal mucosa; therefore, we studied the distribution of AQP-1, AQP-2, AQP-3 and AQP-4 through immunocytochemistry. Intense AQP-1 labeling was observed throughout the subepithelial vascular network; no AQP-1 immunoreactivity was detected in olfactory and non-olfactory epithelial cells. No signal was detected for AQP-2 and 4. AQP-3 distribution was restricted to the surface non-olfactory epithelial cells lining the turbinates in narrow passages and blind spaces. Therefore, AQP-1 and AQP-3 coincided at the level of the turbinates, although in different cell types which suggest a pathway for water removal from the nasal surface first through AQP-3 in non-olfactory epithelial cells and then into the capillary lumen through AQP-1info:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.81 n.1 20082008-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100003en10.4067/S0716-078X2008000100003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	aquaporin nasal passage desert rodent
spellingShingle	aquaporin nasal passage desert rodent GALLARDO,PEDRO HERRERA,SOFÍA SAFFER,KARIN BOZINOVIC,FRANCISCO Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation
description	Rodents from arid and semiarid environments live under conditions where the spatial and temporal availability of water is limited. Octodon degus is a South-American desert-dwelling rodent inhabiting arid and semiarid habitats of central and northern Chile. Its survival depends on morphological, physiological and behavioral adaptations that allow water conservation. This rodent has a high urine concentrating ability, high capacity of fecal dehydration and low evaporative water loss, related to the ability of the nasal passages to condense water from the exhaled air; this water must be absorbed in order to avoid its accumulation in the nasal passages and potential loss through the nostrils. We hypothesize that aquaporins (AQPs) might be present in the nasal mucosa; therefore, we studied the distribution of AQP-1, AQP-2, AQP-3 and AQP-4 through immunocytochemistry. Intense AQP-1 labeling was observed throughout the subepithelial vascular network; no AQP-1 immunoreactivity was detected in olfactory and non-olfactory epithelial cells. No signal was detected for AQP-2 and 4. AQP-3 distribution was restricted to the surface non-olfactory epithelial cells lining the turbinates in narrow passages and blind spaces. Therefore, AQP-1 and AQP-3 coincided at the level of the turbinates, although in different cell types which suggest a pathway for water removal from the nasal surface first through AQP-3 in non-olfactory epithelial cells and then into the capillary lumen through AQP-1
author	GALLARDO,PEDRO HERRERA,SOFÍA SAFFER,KARIN BOZINOVIC,FRANCISCO
author_facet	GALLARDO,PEDRO HERRERA,SOFÍA SAFFER,KARIN BOZINOVIC,FRANCISCO
author_sort	GALLARDO,PEDRO
title	Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation
title_short	Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation
title_full	Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation
title_fullStr	Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation
title_full_unstemmed	Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation
title_sort	distribution of aquaporins in the nasal passage of octodon degus, a south-american desert rodent and its implications for water conservation
publisher	Sociedad de Biología de Chile
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100003
work_keys_str_mv	AT gallardopedro distributionofaquaporinsinthenasalpassageofoctodondegusasouthamericandesertrodentanditsimplicationsforwaterconservation AT herrerasofia distributionofaquaporinsinthenasalpassageofoctodondegusasouthamericandesertrodentanditsimplicationsforwaterconservation AT safferkarin distributionofaquaporinsinthenasalpassageofoctodondegusasouthamericandesertrodentanditsimplicationsforwaterconservation AT bozinovicfrancisco distributionofaquaporinsinthenasalpassageofoctodondegusasouthamericandesertrodentanditsimplicationsforwaterconservation
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Distribution of aquaporins in the nasal passage of Octodon degus, a South-American desert rodent and its implications for water conservation

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