Background: In living donor liver transplantation, the biological organ age of the donated allograft is unknown in young patients who receive grafts from older donors. Few studies have focused on the effects of aging on allografts in the state of tolerance. The purpose of this study was to assess the biological organ age of liver grafts. Methods: In 20 tolerated allografts over a 10-year post-transplant follow-up period, the relative telomere lengths were measured by multiplex quantitative polymerase chain reaction, and hepatocyte nuclear size and cell cycle phase markers were determined by immunohistochemistry. The results were compared with the same measurements that had been obtained prior to transplantation in the recipients' pre-implantation donor livers. Tolerance was defined strictly as a condition in which the allograft functioned normally and showed normal histology without any histological signs of rejection, fibrosis or inflammation in the absence of immunosuppression. Results: First, telomere length correlated with chronological donor age (n = 41). Accelerated telomere reduction was seen in tolerated grafts compared with the predicted telomere length of each allograft calculated from the regression line of donor livers. Tolerated grafts were associated with higher hepatocyte p21 expression and greater nuclear area than in the donor livers prior to transplantation. Conclusions: These findings suggest that allografts age more rapidly than in the normal population, and that grafts may reach the limit of proliferative capacity even in the state of tolerance. (C) 2014 Elsevier B.V. All rights reserved.
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Takatsuki, Mitsuhisa
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Hidaka, Masaaki
Soyama, Akihiko
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Soyama, Akihiko
Muraoka, Izumi
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Muraoka, Izumi
Tomonaga, Tetsuo
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Tomonaga, Tetsuo
Shimokawa, Isao
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Nagasaki Univ, Grad Sch Biomed Sci, Unit Basic Med Sci, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Shimokawa, Isao
Kanematsu, Takashi
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
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Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USAUniv Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Feng, S
Goodrich, NP
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机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Goodrich, NP
Bragg-Gresham, JL
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机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Bragg-Gresham, JL
Dykstra, DM
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机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Dykstra, DM
Punch, JD
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机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Punch, JD
DebRoy, MA
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机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
DebRoy, MA
Greenstein, SM
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h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Greenstein, SM
Merion, RM
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机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
机构:
Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Takatsuki, Mitsuhisa
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Hidaka, Masaaki
Soyama, Akihiko
论文数: 0引用数: 0
h-index: 0
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Soyama, Akihiko
Muraoka, Izumi
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Muraoka, Izumi
Tomonaga, Tetsuo
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h-index: 0
机构:
Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Tomonaga, Tetsuo
Shimokawa, Isao
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机构:
Nagasaki Univ, Grad Sch Biomed Sci, Unit Basic Med Sci, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
Shimokawa, Isao
Kanematsu, Takashi
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Nagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, JapanNagasaki Univ, Grad Sch Biomed Sci, Dept Surg, Nagasaki 8528501, Japan
机构:
Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USAUniv Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Feng, S
Goodrich, NP
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Goodrich, NP
Bragg-Gresham, JL
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Bragg-Gresham, JL
Dykstra, DM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Dykstra, DM
Punch, JD
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Punch, JD
DebRoy, MA
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
DebRoy, MA
Greenstein, SM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Greenstein, SM
Merion, RM
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h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA