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  • 1995-1999  (2)
  • Dopexamine  (1)
  • Key words: COX-2 inhibition — Cardiovascular disease — Anti-inflammatory — Therapeutic effects  (1)
  • Chemistry
  • Haemofiltration
Material
Years
Year
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Inflammation research 47 (1998), S. 88-92 
    ISSN: 1420-908X
    Keywords: Key words: COX-2 inhibition — Cardiovascular disease — Anti-inflammatory — Therapeutic effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Cyclooxygenase (COX)-2 is the predominant COX isoform present at sites of inflammation, and produces prostaglandins (PG) that cause swelling and pain. However, in situations where the release of protective PGs by COX-1 has been lost, the induction of COX-2 may compensate and reduce inflammatory responses. This is particularly likely in large blood vessels, where, under physiological conditions, the release of prostacyclin by COX-1, present in the endothelium, is an important component of cardiovascular homeostasis. We, and others, have recently shown that COX-2 can be induced by proinflammatory cytokines in human blood vessels, and also in human airway cells. Moreover, recent data from our group have suggested that in these structures, COX-2 is anti-inflammatory at the level of cellular proliferation, adhesion receptor expression, and cytokine release.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1238
    Keywords: Key words Cardiopulmonary bypass ; Gastrointestinal permeability ; Dopexamine ; Dopamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To compare the effects of dopexamine and dopamine on the mucosal permeability of the gastrointestinal tract (GIT). Design: Prospective, randomised clinical trial. Setting: Intensive care unit of a postgraduate teaching hospital, London, England. Patients: Thirty patients undergoing elective surgery involving cardiopulmonary bypass, performed by a single surgeon. Interventions: Patients were randomly assigned to receive either dopexamine 2.0 μg/kg per min or dopamine 2.5 μg/kg per min for the duration of the study period. Measurements and main results: Hemodynamic parameters and gastric intramucosal pH (pHi) were measured at intervals throughout the study. GIT permeability was measured once, post-operatively, using the ratio of absorbed lactulose to L-rhamnose. The groups were similar with respect to demographics, pre- and post-operative risk factors. The lactulose/rhamnose ratio was (mean ± SEM) 0.44 ± 0.10 in the dopexamine group vs 0.65 ± 0.08 in that receiving dopamine (p 〈 0.05). The dopexamine group had a significantly higher oxygen delivery preoperatively (479.5 ± 32.0 ml/min per m2 vs 344.4 ± 23.9 ml/min per m2 for dopamine, p 〈 0.01), but no other significant differences emerged between the groups. Conclusions: Compared to dopamine, dopexamine reduces GIT permeability following surgery involving cardiopulmonary bypass. The mechanism of this effect remains unclear.
    Type of Medium: Electronic Resource
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