Abstract:
BACKGROUND:Argininemia is an autosomal recessive urea cycle disorder (UCD). Unlike other UCD, hyperammonemia is rarely seen. Patients usually present in childhood with neurological symptoms. Uncommon presentations like neonatal cholestasis or cirrhosis have been reported. Although transient elevations of liver transaminases and coagulopathy have been reported during hyperammonemia episodes, a permanent coagulopathy has never been reported. METHODS:In this retrospective study, coagulation disturbances are examined in 6 argininemia patients. All of the patients were routinely followed up for hepatic involvement due to argininemia. Laboratory results, including liver transaminases, albumin, prothrombin time (PT), international normalized ratio (INR), activated partial thromboplastin time (aPTT), and clotting factor levels, were assessed in all of the patients. RESULTS:All of the patients had a prolonged PT and an increased INR, while none of the patients had a prolonged aPTT. Five patients had slightly elevated liver transaminases. A liver biopsy was performed in 1 patient but neither cirrhosis nor cholestasis was documented. Five of the 6 patients had low factor VII and factor IX levels, while other clotting factors were normal. CONCLUSIONS:Argininemia patients should be investigated for coagulation disorders even if there is no apparent liver dysfunction or major bleeding symptoms.
journal_name
Acta Haematoljournal_title
Acta haematologicaauthors
Kiykim E,Zubarioglu T,Cansever MS,Celkan T,Häberle J,Aktuglu Zeybek ACdoi
10.1159/000493678subject
Has Abstractpub_date
2018-01-01 00:00:00pages
221-225issue
4eissn
0001-5792issn
1421-9662pii
000493678journal_volume
140pub_type
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