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Differential hepatic expression of CD56 can discriminate biliary atresia from other neonatal cholestatic disorders.
MedLine Citation:
PMID:  22772093     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: The diagnosis of biliary atresia (BA) can be challenging as its histopathologic features overlap with those of other pediatric cholestatic liver diseases. We aimed to study the diagnostic value of hepatic CD56 immunostaining in the differentiation of BA from other causes of neonatal cholestasis. METHODS: Hepatic CD56 immunostaining was investigated in 30 infants with BA and compared with that in 30 infants with non-BA cholestatic disorders. The expression of positive cells was interpreted semiquantitatively on the basis of the extent (percentage or number) of positive cells on a scale of 0-3. RESULTS: The occurrence of CD56-positive biliary epithelial cells was significantly higher in the BA (83.3%) than in the non-BA group (6.7%), whereas the occurrence of CD56 natural killer cells in hepatic parenchyma was significantly higher in the non-BA group (76.7%) than in the BA group (6.7%; P<0.0001 for both). In contrast, there was no significant difference between both groups in CD56 natural killer cells in portal tracts (P>0.05). Using this differential expression as a discriminative tool between the BA and the non-BA group, positive biliary epithelial cell staining had high specificity, whereas negative parenchymal staining had high sensitivity (93.3% for both) with an accuracy of 88.3 and 84.65%, respectively. The combination of both parameters improved the accuracy up to 91.65%, with 100% specificity in the diagnosis of BA. CONCLUSION: CD56 immunostaining of the liver had a diagnostic value; it can be used to differentiate BA from other neonatal cholestatic disorders and might be useful as an additional stain when investigating infants with neonatal cholestasis.
Authors:
Mostafa Mohamed Sira; Mohamed Abdel-Salam El-Guindi; Magdy Anwar Saber; Nermin Ahmad Ehsan; Marwa Sabry Rizk
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-3
Journal Detail:
Title:  European journal of gastroenterology & hepatology     Volume:  -     ISSN:  1473-5687     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9000874     Medline TA:  Eur J Gastroenterol Hepatol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Departments of aPediatric Hepatology bPathology, National Liver Institute, Menofiya University, Shebin El-koom, Menofiya, Egypt.
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