Journal
ACTA MEDICA OKAYAMA
Volume 69, Issue 3, Pages 137-144Publisher
OKAYAMA UNIV MED SCHOOL
Keywords
primary biliary cirrhosis; keratin 7; hepatic failure
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [22590733]
- Ministry of Health, Labor, and Welfare of Japan
- Grants-in-Aid for Scientific Research [22590733] Funding Source: KAKEN
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A predictive marker of the rapid progression to hepatic failure is desired for patients with asymptomatic primary biliary cirrhosis (aPBC). We performed a systematic cohort analysis of 101 patients diagnosed as having aPBC and the rapid progression to liver failure in some, by focusing on cholestasis. Cholestasis was assessed by aberrant keratin7 (K-7) expressions in the patients' hepatocytes. Intralobular expressions of K-7 were found in 9 of the 101 patients. The grades of K-7 expression were significantly associated with the levels of alanine aminotransferase, alkaline phosphatase, and total bilirubin at the time of diagnosis, but not with bile duct loss or cholestasis. Stepwise logistic regression analysis revealed that high grades of K-7 expression correlated positively with high levels of total bilirubin. During the follow-up period, 8 patients developed jaundice, and the mean period until the development of jaundice was 5.2 years. The proportional hazards models for the risk of developing jaundice identified a high grade of aberrant K-7 expression in hepatocytes as the only significant risk factor. Aberrant K-7 expression in hepatocytes can be used as an additional marker to predict rapid progression to liver failure in patients with aPBC at the time of diagnosis.
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