Production of 5-lipoxygenase pathway metabolites by peripheral leucocytes in capillary leak syndrome (Clarkson disease)
- 1 February 1987
- journal article
- case report
- Published by Wiley in European Journal of Clinical Investigation
- Vol. 17 (1), 53-57
- https://doi.org/10.1111/j.1365-2362.1987.tb01225.x
Abstract
Periodic systemic capillary leak syndrome (Clarkson disease) is characterized by unexplained attacks of a marked increase in capillary permeability. As leukotrienes, derived from arachidonic acid via the 5-lipoxygenase pathway, enhance capillary permeability, we studied arachidonate metabolism in leucocytes of a patient with capillary leak syndrome. Leucocyte-platelet suspensions, prepared from blood collected from the patient during asymptomatic periods (n = 11) produced greater amounts of 5-hydroxyeicosatetraenoic acid (5-HETE) than control suspensions (P less than 0.05). Peripheral leucocytes, collected during attacks (n = 3) and studied without addition of A23187 released LTB4 in vitro but not sulphidopeptides leukotrienes. This result was never observed with leucocytes from control subjects or from the patient out of a crisis. These results suggest that in the patient, peripheral leucocytes could be stimulated by an unknown, as yet to be determined, endogenous factor to produce more 5-HETE and LTB4. Whether LTB4 plays a pathogenic role in the capillary leakage remains to be determined.Keywords
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