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Abstract #1845

Ammonium quantification in human plasma by 1H-NMR for staging of liver fibrosis in alcohol and non-alcoholic-related liver disease

Marc Azagra1, Elisa Pose2, Francesco De Chiara3, Martina Pérez2, Emma Avitabile2, Joan-Marc Servitja4, Laura Brugnara4, Javier Ramón-Azcón3, and Irene Marco-Rius1
1MIPMED, IBEC, Barcelona, Spain, 2Liver Unit, Hospital ClĂ­nic, Barcelona, Spain, 3Biosensors for Bioengineering, IBEC, Barcelona, Spain, 4IDIBAPS, Barcelona, Spain

Synopsis

Keywords: Liver, Blood, Ammonium quantification, chronic liver disease, hepatic dysfunction, disease biomarker, NMR

Invasive and painful liver biopsy is the gold standard for liver disease diagnosis. Non-invasive methods to assess liver fibrosis in patients with alcohol-related liver disease (ArLD) and non-alcoholic fatty liver disease (NAFLD) are an unmet clinical need. We have developed a robust and reliable 1H NMR protocol to quantify the endogenous ammonium concentration in biological fluids. The measurement of ammonium in blood plasma samples of ArLD and NAFLD patients discerned between some stages of the disease retrospectively and showed that ammonium readout is a robust diagnostic marker of fibrosis stage, more so than current clinically assessed blood hepatic biomarkers.

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Keywords