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Experimental and molecular pathology v.103 no.2, 2017년, pp.204 - 209   SCIE SCOPUS
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The adaptor protein alpha-syntrophin is reduced in human non-alcoholic steatohepatitis but is unchanged in hepatocellular carcinoma

Rein-Fischboeck, Lisa (Department of Internal Medicine I, Regensburg University Hospital, Regensburg, Germany ) ; Pohl, Rebekka (Department of Internal Medicine I, Regensburg University Hospital, Regensburg, Germany ) ; Haberl, Elisabeth M. (Department of Internal Medicine I, Regensburg University Hospital, Regensburg, Germany ) ; Weiss, Thomas S. (Children's University Hospital (KUNO), Regensburg University Hospital, Regensburg, Germany ) ; Buechler, Christa (Department of Internal Medicine I, Regensburg University Hospital, Regensburg, Germany ) ;
  • 초록  

    Abstract The adaptor protein alpha-syntrophin (SNTA) is differentially expressed in varying types of cancer and affects triglyceride levels, inflammatory response and cell proliferation. However, little is known about the expression of SNTA in liver diseases. Non-alcoholic steatohepatitis (NASH) is characterized by hepatic steatosis, inflammation and eventually fibrosis, and may progress to hepatocellular carcinoma (HCC). Here, SNTA mRNA was analyzed in liver tissues from 71 non-alcoholic fatty liver disease patients and 32 controls to assess associations with disease characteristics. SNTA mRNA expression was reduced in NASH liver and negatively correlated with steatosis, inflammation, fibrosis and NASH scores. In the NASH patients, those with type 2 diabetes had a higher fibrosis score, reduced inflammation and increased hepatic SNTA mRNA levels demonstrating a strong association of SNTA mRNA levels with inflammation. Recently, we have shown diminished expression of the high-density lipoprotein scavenger receptor BI (SR-BI) in the liver of syntrophin-deficient mice. Indeed, hepatic SNTA and SR-BI mRNA were positively correlated. SNTA protein was further determined in tumor and non-tumorous tissues of 21 HCC patients. Protein expression was unchanged in the tumor and not related to staging and grading. Present study identified associations of hepatic SNTA mRNA levels with SR-BI and features of NASH assuming a function of this protein in chronic liver disease and cholesterol metabolism. Highlights The mRNA level of alpha-syntrophin (SNTA) is reduced in non-alcoholic steatohepatitis. Hepatic SNTA mRNA is negatively correlated with features of NASH. Hepatic SNTA mRNA and SR-BI mRNA are positively correlated. SNTA protein is not changed in hepatocellular carcinoma.


  • 주제어

    Inflammation .   Type 2 diabetes .   SR-BI .   Malignancy.  

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