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  • Title: Liver-type fatty acid binding protein in serum and broncho-alveolar lavage in a model of acute respiratory failure because of surfactant depletion--a possible marker for lung damage?
    Author: Lachmann RA, Werchan S, Schachtrup C, Haitsma JJ, Spener F, Lachmann B.
    Journal: Clin Physiol Funct Imaging; 2006 Nov; 26(6):371-5. PubMed ID: 17042904.
    Abstract:
    INTRODUCTION: Liver-type fatty acid binding proteins (L-FABP) have been shown to be present in alveolar macrophages and type II pneumocytes of the lung. This study determined levels of L-FABP in serum and broncho-alveolar lavage (BAL) during experimental acute respiratory failure (ARF) to evaluate whether this molecule can serve as a marker for lung damage. METHODS: Male Sprague-Dawley rats (n = 24) were ventilated and either lung lavaged or lavaged and treated with surfactant, and compared to ventilated, non-lavaged controls. Blood samples were drawn every hour for 4 h to measure L-FABP concentrations in serum. At the end of the experiment a BAL was performed to determine L-FABP levels in BAL fluid. L-FABP was measured with a sandwich enzyme-linked immunosorbent assays. RESULTS: Serum L-FABP concentrations rose significantly during the first 2 h of ventilation in all groups compared with baseline values. After 2 h L-FABP levels were significantly higher in lavaged animals compared with the ventilated controls and to animals treated with surfactant. After 4 h of ventilation, L-FABP in BAL was significantly higher in lavaged, non-surfactant treated animals compared with the ventilated controls. CONCLUSION: In the early phase of experimental ARF serum L-FABP levels correlate well with the degree of lung injury.
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