Clinical significance of intragraft miR-122 and -155 expression after liver transplantation

Tadafumi Asaoka, Dayami Hernandez, Panagiotis Tryphonopoulos, Akin Tekin, Jennifer Garcia, Seigo Nishida, Ji Fan, Thiago Beduschi, Rodrigo Vianna, Phillip Ruiz

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Aim: Recurrent hepatitis C (RHC) and acute cellular rejection (AR) remain critical problems following liver transplantation (LT) in hepatitis C virus (HCV) positive recipients because of the similar clinical features. Discrimination between these conditions can be problematic, and adjunctive biomarkers would be useful to discriminate these processes. The aim of our study was to investigate the possibility of the intragraft miR-122 and -155 expression as new biomarkers after LT. Methods: A total of 29 HCV positive recipients were enrolled in this study. Intragraft expressions of miR-122 and -155 were studied between RHC predominant (n=17) and AR predominant cases (n=12) using quantitative reverse transcription polymerase chain reaction. Furthermore, we investigated the correlations between these expression levels and clinical serum parameters. Results: Intragraft miR-122 expression had a good correlation with serum alkaline phosphatase (P=0.02), but it was not correlated with the serum HCV viral load. The expression levels of miR-122 in the AR group were significantly higher than those in the RHC group (P=0.0006) and, inversely, the expression levels of miR-155 in the AR group were significantly lower than those in the RHC group (P=0.01). Conclusion: Our study emphasizes a useful pattern of miR-122 and -155 as ancillary markers to discriminate AR predominant cases from RHC in HCV positive patients after LT.

Original languageEnglish (US)
Pages (from-to)898-905
Number of pages8
JournalHepatology Research
Issue number8
StatePublished - Aug 1 2015


  • Acute cellular rejection
  • Hepatitis C
  • Liver transplantation
  • MiRNA
  • Molecular biomarker

ASJC Scopus subject areas

  • Hepatology
  • Infectious Diseases


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