| pubmed-article:10751353 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0024109 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0034721 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0034693 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0449475 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C2709248 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0387583 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0017262 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C2752174 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0805586 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0443199 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0851285 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C2911684 | lld:lifeskim |
| pubmed-article:10751353 | lifeskim:mentions | umls-concept:C0185117 | lld:lifeskim |
| pubmed-article:10751353 | pubmed:issue | 4 | lld:pubmed |
| pubmed-article:10751353 | pubmed:dateCreated | 2000-6-29 | lld:pubmed |
| pubmed-article:10751353 | pubmed:abstractText | Cyclooxygenase (Cox), the key enzyme of prostanoid synthesis, consists of the two isoforms Cox-1 and Cox-2, both recently noted to be constitutively expressed in rat lungs with a distinct profile of cellular distribution. The responsiveness of pulmonary Cox-1 and Cox-2 expression to intravascular endotoxin lipopolysaccharide (LPS) administration was investigated in isolated, ventilated rat lungs, buffer-perfused with or without admixture of rat plasma. Immunohistochemical staining intensity was measured by a previously described method of silver enhancement and epipolarization image analysis. Both the Cox-1 mRNA, quantified in the whole lung homogenate, and the cellular localization of Cox-1 were unchanged in response to LPS. In contrast, time- and dose-dependent up-regulation of Cox-2 mRNA (lung homogenate) occurred, and differential LPS reactivity at the cellular level was observed. Up-regulation of Cox-2 in cell types expressing this enzyme already under baseline conditions was noted in bronchial epithelial cells, bronchial and vascular smooth muscle cells, cells within the BALT and myocytes of the large hilar veins. De novo induction of Cox-2 occurred in endothelial cells and the majority of alveolar macrophages. Down-regulation of Cox-2 was observed in perivascular and peribronchial macrophage-like cells. Moreover, differential impact of plasma components was noted: for the large majority of cells, CD14 surface expression correlated with Cox-2 responsiveness to LPS independent of plasma, whereas the presence of plasma components was a prerequisite for the LPS response in CD14-negative cells. LPS did not provoke physiological changes in the perfused lungs, but markedly enhanced baseline prostanoid generation. We conclude that LPS-induced Cox-2 regulation occurs in a complex, cell-specific manner, which may be relevant for pathogenetic sequelae in septic lung injury and acute respiratory failure. | lld:pubmed |
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| pubmed-article:10751353 | pubmed:language | eng | lld:pubmed |
| pubmed-article:10751353 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:10751353 | pubmed:citationSubset | AIM | lld:pubmed |
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| pubmed-article:10751353 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:10751353 | pubmed:month | Apr | lld:pubmed |
| pubmed-article:10751353 | pubmed:issn | 0002-9440 | lld:pubmed |
| pubmed-article:10751353 | pubmed:author | pubmed-author:SeegerWW | lld:pubmed |
| pubmed-article:10751353 | pubmed:author | pubmed-author:DunckerH RHR | lld:pubmed |
| pubmed-article:10751353 | pubmed:author | pubmed-author:GrimmingerFF | lld:pubmed |
| pubmed-article:10751353 | pubmed:author | pubmed-author:MerkleMM | lld:pubmed |
| pubmed-article:10751353 | pubmed:author | pubmed-author:Goppelt-Strue... | lld:pubmed |
| pubmed-article:10751353 | pubmed:author | pubmed-author:ErmertLL | lld:pubmed |
| pubmed-article:10751353 | pubmed:author | pubmed-author:ErmertMM | lld:pubmed |
| pubmed-article:10751353 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:10751353 | pubmed:volume | 156 | lld:pubmed |
