Telomerase activity in rat liver allografts

Shigeru Goto, Yu Chun Lin, Chia Yun Lai, Chuan Mo Lee, Tair Long Pan, Roger Lord, Kuei Chen Chiang, Hui Peng Tseng, Chen Lung Lin, Yu Fan Cheng, Hirotaka Yokoyama, Seigo Kitano, Chao Long Chen*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

5 Scopus citations

Abstract

Background. Telomerase activity in grafts may be involved in the alteration of cellular senescence after transplantation or its relevant immunological events. Methods. At the age of 20 weeks, donor livers harvested from DA (RT1a) were orthotopically transplanted into PVG (RT1(c)) or LEW (RT11) rats. Rats having undergone orthotopic liver transplantation (OLT; DA-PVG) naturally overcome rejection, whereas all OLT (DA-LEW) rats die from acute rejection within 14 days. Telomerase activity in liver allografts was measured at various intervals post OLT. Results. At day 7 when the most severe rejection episode was observed in OLT (DA-LEW) and OLT (DA, PVG), the telomerase activity was significantly higher than in syngeneic OLT (DA-DA) rats, in which no rejection occurred. Telomerase activity in tolerogenic OLT (DA-PVG) livers remained elevated for at least 2 months. Conclusion. These results suggest that telomerase activity in allogeneic OLT livers may reflect regenerating hepatocytes or activation of lymphocytes and/or hematopoietic stem cells associated with rejection or tolerance.

Original languageEnglish
Pages (from-to)1013-1015
Number of pages3
JournalTransplantation
Volume69
Issue number5
DOIs
StatePublished - 15 03 2000
Externally publishedYes

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