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  • Title: Elevated serum bone morphogenetic protein 7 levels and clinical outcome in children with biliary atresia.
    Author: Chayanupatkul M, Honsawek S, Vejchapipat P, Chongsrisawat V, Poovorawan Y.
    Journal: Eur J Pediatr Surg; 2009 Aug; 19(4):246-50. PubMed ID: 19387926.
    Abstract:
    BACKGROUND AND AIM: Biliary atresia (BA) is one of the most serious liver disorders in children. The purposes of the present study were to investigate serum levels of bone morphogenetic protein 7 (BMP7) in BA children compared with healthy controls and to evaluate the association between serum BMP7 and the clinical outcome of BA patients post Kasai operation. METHODS: Sixty-two BA patients post Kasai operation and 14 healthy controls were enrolled. The patients were divided into two groups according to their serum total bilirubin levels (TB<2, no jaundice vs. TB> or =2 mg/dL, persistent jaundice) and alanine aminotransferase levels (ALT<45, normal ALT vs. ALT> or =45 IU/L, elevated ALT). Serum BMP7 levels were determined by commercial enzyme-linked immunoabsorbent assay. RESULTS: The mean serum BMP7 was higher in BA patients compared with that of healthy controls (35.4+/-3.6 vs. 20.6+/-2.7 pg/mL, p=0.002). The BA patients with persistent jaundice had more elevated serum BMP7 levels than those without jaundice (59.5+/-6.5 vs. 20.3+/-1.6 pg/mL, p=0.001). There was also a correlation between serum total bilirubin and serum BMP7 levels (r=0.57, p<0.001). Moreover, the levels of serum BMP7 in BA patients with elevated ALT were significantly higher than those with normal ALT (41.6+/-4.7 vs. 22.4+/-4.2 pg/mL, p=0.003). Additionally, BA patients with portal hypertension had higher increased serum BMP7 levels compared to those without portal hypertension (45.3+/-4.9 vs. 18.7+/-2.8 pg/mL, p<0.001). CONCLUSION: The significant increment of serum BMP7 was associated with a deterioration of hepatic function and the progression of liver fibrosis. Serum BMP7 could be used as a prognostic marker to reflect disease severity and monitor disease progression in BA patients post Kasai operation.
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