| pubmed-article:19308675 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:19308675 | lifeskim:mentions | umls-concept:C0521119 | lld:lifeskim |
| pubmed-article:19308675 | lifeskim:mentions | umls-concept:C0022646 | lld:lifeskim |
| pubmed-article:19308675 | lifeskim:mentions | umls-concept:C0005528 | lld:lifeskim |
| pubmed-article:19308675 | lifeskim:mentions | umls-concept:C0028630 | lld:lifeskim |
| pubmed-article:19308675 | lifeskim:mentions | umls-concept:C1280500 | lld:lifeskim |
| pubmed-article:19308675 | lifeskim:mentions | umls-concept:C0332208 | lld:lifeskim |
| pubmed-article:19308675 | lifeskim:mentions | umls-concept:C0597488 | lld:lifeskim |
| pubmed-article:19308675 | pubmed:issue | 4 | lld:pubmed |
| pubmed-article:19308675 | pubmed:dateCreated | 2009-11-12 | lld:pubmed |
| pubmed-article:19308675 | pubmed:abstractText | A range of P2 receptor subtypes has been identified along the renal tubule, in both apical and basolateral membranes. Furthermore, it has been shown that nucleotides are released from renal tubular cells, and that ectonucleotidases are present in several nephron segments. These findings suggest an autocrine/paracrine role for nucleotides in regulating tubular function. The present review catalogues the known actions of extracellular nucleotides on tubular solute transport. In the proximal tubule, there is firm evidence that stimulation of apical P2Y(1) receptors inhibits bicarbonate reabsorption, whilst basolaterally applied ATP has the opposite effect. Clearance studies suggest that systemic diadenosine polyphosphates profoundly reduce proximal tubular fluid transport, through as yet unidentified P2 receptors. To date, only circumstantial evidence is available for an action of nucleotides on transport in the loop of Henle; and no studies have been made on native distal tubules, though observations in cell lines suggest an inhibitory effect on sodium, calcium and magnesium transport. The nephron segment most studied is the collecting duct. Apically applied nucleotides inhibit the activity of small-conductance K(+) channels in mouse collecting duct, apparently through stimulation of P2Y(2) receptors. There is also evidence, from cell lines and native tissue, that apically (and in some cases basolaterally) applied nucleotides inhibit sodium reabsorption. In mice pharmacological profiling implicates P2Y(2) receptors; but in rats, the receptor subtype(s) responsible is/are unclear. Recent patch-clamp studies in rat collecting ducts implicate apical P2Y and P2X subtypes, with evidence for both inhibitory and stimulatory effects. Despite considerable progress, clarification of the physiological role of the tubular P2 receptor system remains some way off. | lld:pubmed |
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| pubmed-article:19308675 | pubmed:language | eng | lld:pubmed |
| pubmed-article:19308675 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:19308675 | pubmed:status | PubMed-not-MEDLINE | lld:pubmed |
| pubmed-article:19308675 | pubmed:month | Dec | lld:pubmed |
| pubmed-article:19308675 | pubmed:issn | 1573-9546 | lld:pubmed |
| pubmed-article:19308675 | pubmed:author | pubmed-author:ShirleyDavid... | lld:pubmed |
| pubmed-article:19308675 | pubmed:author | pubmed-author:BaileyMatthew... | lld:pubmed |
| pubmed-article:19308675 | pubmed:issnType | Electronic | lld:pubmed |
| pubmed-article:19308675 | pubmed:volume | 5 | lld:pubmed |
| pubmed-article:19308675 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:19308675 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:19308675 | pubmed:pagination | 473-80 | lld:pubmed |
| pubmed-article:19308675 | pubmed:year | 2009 | lld:pubmed |
| pubmed-article:19308675 | pubmed:articleTitle | Effects of extracellular nucleotides on renal tubular solute transport. | lld:pubmed |
| pubmed-article:19308675 | pubmed:affiliation | Molecular Physiology, Centre for Cardiovascular Science, The Queen's Medical Research Institute, University of Edinburgh, 47, Little France Crescent, Edinburgh, EH16 4TJ, UK, matthew.bailey@ed.ac.uk. | lld:pubmed |
| pubmed-article:19308675 | pubmed:publicationType | Journal Article | lld:pubmed |
| http://linkedlifedata.com/r... | pubmed:referesTo | pubmed-article:19308675 | lld:pubmed |
