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J Comp Physiol B
2004 Jan 01;1741:83-9. doi: 10.1007/s00360-003-0391-3.
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Prostaglandin E2 induces upregulation of Na+ transport across Xenopus lung epithelium.
Berk A
,
Fronius M
,
Clauss W
,
Schnizler M
.
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The apical mucus on pulmonary epithelia is not only critical for physiological functions such as gas exchange or inflammatory processes, but also contains surfactants and multiple molecules that mediate cellular responses. A tight control of transepithelial ion transport maintains viscosity of this layer and, e.g., the amiloride-sensitive sodium channels (ENaCs) in lung epithelia of vertebrates are the most important regulatory sites for transcellular sodium uptake. Dysfunction of this sodium transport results in reduced liquid absorption and causes massive problems with gas exchange. We used dissected lungs of Xenopus laevis in Ussing chambers to investigate the influence of prostaglandin E2 (PGE2) on the regulation of short-circuit current (ISC) and amiloride-sensitive sodium absorption (Iami). Apical application of PGE2 (1 microM) increased ISC by 38% and Iami by approximately 60%. In contrast, a different prostaglandin, PGI2, neither affected ISC nor Iami. Forskolin increased current to a similar magnitude and preincubation of the lung with an RP-isomer of cyclic AMP, an inhibitor of protein kinase A (PKA), abolished the effects of both PGE2 and forskolin. Transepithelial Na+ uptake was also upregulated by the prostaglandin receptor agonists misoprostol and sulprostone. The Iami in Xenopus oocytes that heterologously expressed ENaCs was not affected by PGE2.
Awayda,
Regulation of a cloned epithelial Na+ channel by its beta- and gamma-subunits.
1997, Pubmed,
Xenbase
Awayda,
Regulation of a cloned epithelial Na+ channel by its beta- and gamma-subunits.
1997,
Pubmed
,
Xenbase
Bachteeva,
Regulation of urea permeability in frog urinary bladder by prostaglandin E(2).
2002,
Pubmed
Baeza-Squiban,
Airborne particles evoke an inflammatory response in human airway epithelium. Activation of transcription factors.
1999,
Pubmed
Bjerregaard,
Prostaglandin E2-stimulated glandular ion and water secretion in isolated frog skin (Rana esculenta).
1987,
Pubmed
Burka,
Immunological and non-immunological synthesis and release of prostaglandins and thromboxanes from isolated guinea pig trachea.
1981,
Pubmed
Coleman,
Prostanoid-induced contraction of human bronchial smooth muscle is mediated by TP-receptors.
1989,
Pubmed
Daniels,
Pulmonary-type surfactants in the lungs of terrestrial and aquatic amphibians.
1994,
Pubmed
Davies,
Use of the rat air pouch model of inflammation to evaluate regional drug delivery.
1992,
Pubmed
Els,
Dual role of prostaglandins (PGE2) in regulation of channel density and open probability of epithelial Na+ channels in frog skin (R. pipiens).
1997,
Pubmed
Epple,
Early aldosterone effect in distal colon by transcriptional regulation of ENaC subunits.
2000,
Pubmed
Fischer,
Evidence for apical sodium channels in frog lung epithelial cells.
1989,
Pubmed
,
Xenbase
Fischer,
Regulation of Na+ channels in frog lung epithelium: a target tissue for aldosterone action.
1990,
Pubmed
,
Xenbase
Fortner,
EP2 receptors mediate airway relaxation to substance P, ATP, and PGE2.
2001,
Pubmed
Goldie,
Receptors in asthmatic airways.
1990,
Pubmed
Hallman,
Surfactant in respiratory distress syndrome and lung injury.
2001,
Pubmed
Herman,
Quantitative determination of prostaglandins E1, E2 and E3 in frog tissue.
1987,
Pubmed
Hill,
Retinoid-induced differentiation regulates prostaglandin H synthase and cPLA2 expression in tracheal epithelium.
1996,
Pubmed
Hébert,
Cellular signalling of PGE2 and its selective receptor analogue sulprostone in rabbit cortical collecting duct.
1994,
Pubmed
Kim,
Active Na+ transport across Xenopus lung alveolar epithelium.
1990,
Pubmed
,
Xenbase
Kokko,
Effects of prostaglandin E2 on amiloride-blockable Na+ channels in a distal nephron cell line (A6).
1994,
Pubmed
Matalon,
Sodium channels in alveolar epithelial cells: molecular characterization, biophysical properties, and physiological significance.
1999,
Pubmed
Matsumoto,
Osmotic regulation of Na+ transport across A6 epithelium: interactions with prostaglandin E2 and cyclic AMP.
1997,
Pubmed
Matthay,
Alveolar epithelial barrier. Role in lung fluid balance in clinical lung injury.
2000,
Pubmed
May,
Early effect of aldosterone on the rate of synthesis of the epithelial sodium channel alpha subunit in A6 renal cells.
1997,
Pubmed
,
Xenbase
Meban,
An electron microscope study of acid hydrolase activity in the pneumonocytes of Xenopus laevis.
1973,
Pubmed
,
Xenbase
Nielsen,
Effect of carbachol and prostaglandin E2 on chloride secretion and signal transduction in the exocrine glands of frog skin (Rana esculenta).
1999,
Pubmed
Puoti,
The highly selective low-conductance epithelial Na channel of Xenopus laevis A6 kidney cells.
1995,
Pubmed
,
Xenbase
Rubin,
Physiology of airway mucus clearance.
2002,
Pubmed
Rytved,
Prostaglandin E2 release from dermis regulates sodium permeability of frog skin epithelium.
1995,
Pubmed
Schnizler,
cAMP sensitivity conferred to the epithelial Na+ channel by alpha-subunit cloned from guinea-pig colon.
2000,
Pubmed
,
Xenbase
Skinner,
Interaction between prostacyclin and cortisol in fetal lung cells: effects on cAMP production.
1991,
Pubmed
Skoner,
Plasma elevations of histamine and a prostaglandin metabolite in acute bronchiolitis.
1990,
Pubmed
Tabata,
Possible coupling of prostaglandin E receptor EP(1) to TRP5 expressed in Xenopus laevis oocytes.
2002,
Pubmed
,
Xenbase
Toh,
Molecular evolution of receptors for eicosanoids.
1995,
Pubmed
Verkman,
Role of airway surface liquid and submucosal glands in cystic fibrosis lung disease.
2003,
Pubmed
Wall,
Drug transport across Xenopus alveolar epithelium in vitro.
1996,
Pubmed
,
Xenbase
Weber,
Expression of amiloride-sensitive Na+ channels of hen lower intestine in Xenopus oocytes: electrophysiological studies on the dependence of varying NaCl intake.
1992,
Pubmed
,
Xenbase