Hepatocellular Telomere Length in Biliary Atresia Measured by Q-FISH

作者：Sanada Yukihiro^*; Aida Junko; Kawano Youichi; Nakamura Ken ichi; Shimomura Naotaka; Ishikawa Naoshi; Arai Tomio; Poon Steven S S; Yamada Naoya; Okada Noriki; Wakiya Taiichi; Hayashida Makoto; Saito Takeshi; Egami Satoshi; Hishikawa Shuji; Ihara Yoshiyuki; Urahashi Taizen; Mizuta Koichi; Yasuda Yoshikazu; Kawarasaki Hideo; Takubo Kaiyo

来源：World Journal of Surgery, 2012, 36(4): 908-916.

DOI：10.1007/s00268-012-1453-z

Liver transplantation for biliary atresia is indicated whenever a Kasai portoenterostomy is considered unfeasible. However, the timing of liver transplantation in biliary atresia has not been precisely defined. Excessive shortening of hepatocellular telomeres may occur in patients with biliary atresia, and therefore, telomere length could be a predictor of hepatocellular reserve capacity. %26lt;br%26gt;Hepatic tissues were obtained from 20 patients with biliary atresia who underwent LT and 10 age-matched autopsied individuals (mean age, 1.7 and 1.2 years, respectively). Telomere lengths were measured by Southern blotting and quantitative fluorescence in situ hybridization using the normalized telomere-centromere ratio. The correlation between the normalized telomere-centromere ratio for the hepatocytes in biliary atresia and the pediatric end-stage liver disease score was analyzed. %26lt;br%26gt;The median terminal restriction fragment length of the hepatic tissues in biliary atresia was not significantly different from that of the control (p = 0.425), whereas the median normalized telomere-centromere ratio of hepatocytes in biliary atresia was significantly smaller than that of the control (p %26lt; 0.001). Regression analysis demonstrated a negative correlation of the normalized telomere-centromere ratio with the pediatric end-stage liver disease score in biliary atresia (p %26lt; 0.001). %26lt;br%26gt;Telomere length analysis using quantitative fluorescence in situ hybridization could be an objective indicator of hepatocellular reserve capacity in patients with biliary atresia, and excessive telomere shortening supports the early implementation of liver transplantation.

• 出版日期2012-4