INT72759
From wiki-pain
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Sentences Mentioned In
Key: | Protein | Mutation | Event | Anatomy | Negation | Speculation | Pain term | Disease term |
The aim of the present study was to investigate a possible interaction between ketoprofen and caffeine on prostaglandin (PG) biosynthesis and cyclooxygenase (COX) mRNA expression in the rat renal medulla ex vivo. | |||||||||||||||
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Mucosal PGE2 content was increased following IA treatment, with apparent expression of COX-2 mRNA in the stomach, and the increased PGE2 production was significantly suppressed by SC-560 and rofecoxib as well as indomethacin. | |||||||||||||||
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We quantitated mRNA levels for enzymes involved in the prostaglandin biosynthetic pathways and found that both COX-2 and PGE synthase (PGEs) mRNA levels were increased in the brain; no changes were found for expression of COX-1 or PGD synthase mRNA. | |||||||||||||||
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Treatment of rats with ketoprofen for 1 week had no significant effects on COX-2 mRNA expression. | |||||||||||||||
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Additional experiments showed increased COX-2 mRNA expression in the renal medulla 60 min after ketoprofen administration, that was not significantly influenced by concomitant caffeine treatment. | |||||||||||||||
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The expression of COX-1 mRNA remained unchanged in all tissues examined. | |||||||||||||||
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Tumours from animals treated with vehicle or celecoxib expressed significantly elevated levels of COX-2 mRNA in comparison with the adjacent normal mucosa. | |||||||||||||||
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COX-1SV mRNA represents 2% of the total COX-1 mRNA expressed and its role in colon cancer remains to be established. | |||||||||||||||
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Tumours from animals treated with vehicle or celecoxib expressed significantly elevated levels of COX-2 mRNA in comparison with the adjacent normal mucosa. | |||||||||||||||
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Previously, we reported that COX-1SV mRNA is differentially expressed in the ageing stomach. | |||||||||||||||
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We also demonstrate the presence and differential expression of COX-1SV mRNA in colon tumours. | |||||||||||||||
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However, COX-1SV mRNA levels were elevated in colorectal tumours and reduced after NSAID treatment to the levels observed in normal colonic mucosa. | |||||||||||||||
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Arthritis development associates with gastric COX-2 induction, mRNA and protein, and enhanced gastric prostaglandin E2 (PGE2) synthesis (P <0.01 versus control rats). | |||||||||||||||
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It was shown, for example, that a 24% reduction in food intake (versus ad libitum) for 7 days results in increased mRNA expression of COX enzyme subunits in rat muscle and that activity of COX and citrate synthase are increased by 21 days [16]. | |||||||||||||||
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In contrast, tumours from sulindac and sulindac sulfone treated rats expressed significantly less COX-2 mRNA than tumours from vehicle treated rats. | |||||||||||||||
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Protein and mRNA of COX-2 were detectable with Western blotting analysis and reverse-transcription polymerase chain reaction (RT-PCR) analysis in parathymic lymph nodes, peaking at 48 h after induction of pleurisy. | |||||||||||||||
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COX-1 mRNA was detected by RT-PCR in the intact and melatonin-treated gastric mucosa, while COX-2 mRNA, which was undetectable in the intact gastric mucosa, appeared in WRS-exposed mucosa, especially in the melatonin-treated animals and this was accompanied by increased generation of PGE2 in gastric mucosa. | |||||||||||||||
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Although COX-1 mRNA was expressed in the colon without much alteration during the test period, the expression of COX-2 was upregulated with a peak on day 3 and decreased thereafter. | |||||||||||||||
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The normal gastric mucosa expressed COX-1 mRNA and not COX-2 mRNA, but COX-2 mRNA was expressed in the stomach after administration of SC-560 as well as indomethacin but not rofecoxib. | |||||||||||||||
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The normal gastric mucosa expressed COX-1 mRNA and not COX-2 mRNA, but COX-2 mRNA was expressed in the stomach after administration of SC-560 as well as indomethacin but not rofecoxib. | |||||||||||||||
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General Comments
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