Saudi Journal of Gastroenterology
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α-Smooth muscle actin expression predicts the outcome of Kasai portoenterostomy in biliary atresia


1 Department of Pediatric Surgery, Kanchi Kamakoti Childs Trust Hospital and Childs Trust Medical Research Foundation; Departments of Surgery and Pathology, Institute of Liver Diseases and Transplantation, Gleneagles Global Health City National Foundation for Liver Research, Chennai, Tamil Nadu, India
2 Department of Pediatric Surgery, Kanchi Kamakoti Childs Trust Hospital and Childs Trust Medical Research Foundation, Chennai, Tamil Nadu, India
3 Departments of Surgery and Pathology, Institute of Liver Diseases and Transplantation, Gleneagles Global Health City National Foundation for Liver Research, Chennai, Tamil Nadu, India

Correspondence Address:
Priya Ramachandran,
Department of Pediatric Surgery, Kanchi Kamakoti Childs Trust Hospital and Childs Trust Medical Research Foundation, No. 12A Nageswara Road, Nungambakkam, Chennai - 600 034, Tamil Nadu
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/sjg.SJG_242_18

PMID: 30381493

Background/Aims: Biliary atresia (BA) is a cholangio-destructive disease of the infant liver presenting with features of obstructive cholangiopathy. The Kasai portoenterostomy (KPE) is the first line of management. The aim of our study was to identify the characteristic features of liver histology in BA that impact the outcome of KPE. Patients and Methods: Data from 30 consecutive children was retrieved from our prospectively maintained database of children undergoing KPE. This included basic demographics, laboratory values and histopathological data from liver biopsy. The stages of fibrosis, presence of ductal plate malformation (DPM), giant cell transformation, extramedullary hematopoiesis and area percentage of α-SMA (α-smooth muscle actin) expression was correlated with jaundice clearance after KPE using standard statistical tests. Native liver survival was computed. Results: Overall, 13 (43%) children cleared jaundice in this series and 10 (33%) are alive with native liver. Lower area percent expression of α-SMA correlated with increased probability of jaundice clearance after KPE (P < 0.001). There was no correlation between stage of fibrosis and jaundice clearance (P = 0.52). DPM, giant cell transformation and extramedullary hematopoiesis did not correlate with outcome. All children who are alive with native liver had lower expression of α-SMA. Conclusion: α-SMA expression may be a potential predictor of jaundice clearance and native liver survival after KPE.


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