• Per Wittenhagen, Jesper Brandt Andersen, Anita Hansen, Lone Lindholm, Frederik Rønne, Jørn Theil, Michael Tvede, and Jesper Eugen-Olsen.
• Clinical Research Centre, Copenhagen University, Hvidovre Hospital, Denmark.
• Biomark Insights. 2011 Jan 1; 6: 79-82.

ObjectiveIn this prospective study we investigated the role of plasma levels of soluble urokinase plasminogen activator receptor (suPAR) in children with urinary tract infection.Material And MethodsWe measured the levels of plasma suPAR during admission in 42 children with suspected acute pyelonephritis and compared the results to acute DMSA scintigraphy.ResultsThe mean level of plasma suPAR at admission was significantly elevated in children with renal involvement (7.3 ng/ml) assessed by the DMSA scintigraphy compared to children without renal involvement (4.4 ng/ml, P = 0.010). The positive predictive value of suPAR seems high, since all patients without renal involvement had low suPAR values. During treatment the mean level of plasma suPAR decreased.ConclusionWe conclude that plasma suPAR could be of clinical use for the diagnosis of acute pyelonephritis and that high levels of plasma suPAR might reflect the level of renal involvement and could therefore be a new indicator for renal scarring.

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