Summary
Background and aims
Liver fatty acid-binding protein (L-FABP) is a small cytoplasmic protein. The aim of the current study was to investigate L-FABP levels and to determine their diagnostic value for non-alcoholic fatty liver disease (NAFLD).
Methods
We enrolled in this study 24 consecutive patients with NAFLD who were diagnosed with elevated transaminases and with steatosis by ultrasonograph. The control group consisted of 22 healthy control subjects matched for age and gender. Serum levels of L-FABP were determined by enzyme-linked immunosorbent assay.
Results
L-FABP levels in NAFLD patients were higher than in the control group (levels were 41,976 ± 18,998 and 17048 ± 5021 pg/mL, respectively). A strong correlation was found between serum L-FABP concentrations and aspartate aminotransferase, alanine aminotransferase, body mass index, glucose and γ-glutamyltransferase levels. A level of 284,000 pg/mL L-FABP had 73 % sensitivity and 100 % specificity. Positive and negative predictive values for L-FABP were 100 and 79%, respectively.
Conclusions
Serum L-FABP can be considered as a new diagnostic marker for detecting non-alcoholic fatty liver disease.
Zusammenfassung
Hintergrund und Ziele
Das Leber-Fettsäurebindungsprotein (L-FABP) ist ein kleines zytoplasmatisches Protein. Ziel der vorliegenden Studie war es, die L-FABP Konzentrationen zu bestimmen und ihren diagnostischen Wert bei der nicht-alkoholischen Fettlebererkrankung (NAFLD) zu erheben.
Methodik
Wir schlossen 24 konsekutive Patienten mit NAFLD, die durch erhöhte Transaminasen und mittels Ultraschall erhobener Steatose diagnostiziert worden war, in diese Studie ein. Die Kontrollgruppe bestand aus 22 gesunden Kontrollpersonen, die im Alter und Geschlecht der Gruppe mit NAFLD entsprachen.
Die Serumkonzentrationen des L-FABPs wurden mit ELISA bestimmt.
Ergebnisse
Die L-FABP Spiegel waren bei den Patienten mit NAFLD höher als in der Kontrollgruppe (41.976 ± 18.998 pg/mL im Vergleich zu 17048 ± 5021 pg/mL). Es wurde eine starke Korrelation zwischen den L-FABP Konzentrationen und AST, ALT, BMI, Glucose und gamma GT Werten gefunden. Eine Konzentration der L-FABP von 284.000 pg/mL hatte eine Sensitivität von 73 % und eine Spezifität von 100 %. Der positive Vorhersagewert der L-FABP lag bei 100 %, der negative bei 79 %.
Schlussfolgerungen
Die Serum L-FABP kann als neuer diagnostischer Marker zur Entdeckung einer nicht alkoholischen Fettlebererkrankung aufgefasst werden.
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Akbal, E., Koçak, E., Akyürek, Ö. et al. Liver fatty acid-binding protein as a diagnostic marker for non-alcoholic fatty liver disease. Wien Klin Wochenschr 128, 48–52 (2016). https://doi.org/10.1007/s00508-014-0680-8
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DOI: https://doi.org/10.1007/s00508-014-0680-8