ISSN:
1432-1440
Keywords:
Psoriasis
;
Lipid infusion
;
n-3 fatty acids
;
Neutrophil leukotriene generation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary Twenty patients hospitalized for acute psoriasis guttata with a minimum 10% of body surface area involvement (range 10–90%) completed a 10-day trial in which they were randomly allocated to receive daily infusions with either an n-3 fatty acid based lipid emulsion [100 ml/day with 2.1 g eicosapentaenoic (EPA) and 21 g docosahexaenoic acid (DHA)] or a conventional n-6 lipid emulsion (EPA+DHA〈0.1 g/100 ml). The severity of disease was evaluated by scoring daily erythema, infiltration, and desquamation and by a subjective scoring of clinical manifestations offered by the patients. Leukotriene (LT) and platelet-activating factor (PAF) generation were investigated in ionophore-stimulated neutrophils obtained on days 0, 1, 3, 5, 10, and 40. Moderate improvement in clinical manifestations was noted in the n-6 group (changes in score systems between 16–25% from baseline within 10 days). In contrast, the severity of disease markedly decreased in all patients of the n-3 group, with improvements in all score systems ranging between 45% and 76% within 10 days (P〈0.05 for each variable). The difference in response to the two regimens was evident within 4–7 days after onset of lipid infusion. A more than ten fold increase in neutrophil EPA-derived 5-1ipoxygenase product formation (LTB5, its omega-oxidation products, non-enzymatic degradation products of LTA5 and 5-hydroxyeicosapentaenoic acid) was noted in the n-3 group but not in the n-6 group. Neutrophil PAF generation increased in the n-6 group but decreased in the n-3 group. In conclusion, modulation of eicosanoid metabolism by intravenous n-3 fatty acid supplementation appears to exert a rapid beneficial effect on inflammatory skin lesions in acute guttate psoriasis.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00184491
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