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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Leukotriene receptor antagonism prevents lung protein leakage and hypoxaemia in a septic cat model.

Products of the arachidonic acid cascade have been found to play an important role in the pathophysiology in experimental shock and in ARDS. The effect of cysteinyl-leukotriene (cLT) blockade on the development of respiratory failure during septic shock was examined. Ventilated cats received an infusion of Escherichia coli bacteria. Pretreatment was given with diethylcarbamazine (DEC), a leukotriene synthetase inhibitor, or a new potent cLT receptor antagonist, ICI 198,615. With a gamma camera, the distributions of plasmatransferrin radiolabelled with indium-113m chloride (113mIn) and erythrocytes radiolabelled with technetium-99m (99mTc) were measured over the lungs. A normalized slope index (NSI) reflecting protein leakage, based on the transferrin extravasation, was calculated. In the nonseptic control group (n = 7) NSI was 4.4 x 10(-4) +/- 0.7 x 10(-4).min-1 (mean +/- SEM). Unpretreated septic animals (n = 7) showed a protein leakage after bacterial infusion, with a NSI of 34 +/- 3.5 x 10(-4).min-1. Pretreatment with DEC (n = 6) significantly reduced NSI to 16 +/- 1.5 x 10(-4).min-1. In the group pretreated with ICI 198,615 (n = 8), NSI was 9 +/- 1.2 x 10(-4).min-1. Arterial oxygen tension (PaO2) remained at baseline level of 20 +/- 1.0 kPa during the experimental period in both the nonseptic control group and the ICI 198,615 pretreated group. In the unpretreated septic group, PaO2 fell progressively from a preseptic value of 21 +/- 0.9 to 12 +/- 1.5 kPa after 3 h.(ABSTRACT TRUNCATED AT 250 WORDS)[1]


  1. Leukotriene receptor antagonism prevents lung protein leakage and hypoxaemia in a septic cat model. Schützer, K.M., Larsson, A., Risberg, B., Falk, A. Eur. Respir. J. (1994) [Pubmed]
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