Single- and multiple-dose-response relationships of beta-carotene in cystic fibrosis.

Homnick, D N; Spillers, C R; Cox, S R; Cox, J H; Yelton, L A; DeLoof, M J; Oliver, L K; Ringer, T V · J Pediatr · 1995

rct · Level II

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Abstract

Concentrations of carotenoids are low in patients with cystic fibrosis (CF) and are associated with essential fatty acid deficiency and increased markers of inflammation. We conducted single- and multiple-dose studies of beta-carotene supplementation in patients with CF. Dose-proportional increases in beta-carotene concentrations were found, although clearance was independent of dose. Large doses of beta-carotene were necessary to achieve normal plasma levels.

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