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Injury to peribiliary glands and vascular plexus before liver transplantation predicts formation of non-anastomotic biliary strictures.
- Source :
-
Journal of hepatology [J Hepatol] 2014 Jun; Vol. 60 (6), pp. 1172-9. Date of Electronic Publication: 2014 Feb 19. - Publication Year :
- 2014
-
Abstract
- Background & Aims: The peribiliary glands of large bile ducts have been identified as a niche of progenitor cells that contribute to regeneration of biliary epithelium after injury. We aimed to determine whether injury to the peribiliary glands of donor livers is a risk factor for development of non-anastomotic biliary strictures (NAS) after liver transplantation.<br />Methods: In 128 liver transplant procedures, biopsies were taken from the donor bile duct and injury was assessed using an established histological grading system. Histological severity of injury was subsequently compared in liver grafts that later developed biliary structures vs. uncomplicated liver grafts.<br />Results: Luminal biliary epithelial loss >50% was observed in 91.8% of the grafts before transplantation, yet NAS occurred in only 16.4%. Periluminal peribiliary glands were more severely injured than deep peribiliary glands located near the fibromuscular layer (>50% loss in 56.9% vs. 17.5%, respectively; p<0.001). Injury of deep peribiliary glands was more prevalent and more severe in livers that later developed NAS, compared to grafts without NAS (>50% loss in 50.0% vs. 9.8%, respectively; p=0.004). In parallel, injury of the peribiliary vascular plexus was more severe in livers that developed NAS, compared to grafts without NAS (>50% vascular changes in 57.1% vs. 20.3%; p=0.006).<br />Conclusion: Injury of peribiliary glands and vascular plexus before transplantation is strongly associated with the occurrence of biliary strictures after transplantation. This suggests that insufficient regeneration due to loss of peribiliary glands or impaired blood supply may explain the development of biliary strictures.<br /> (Copyright © 2014 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.)
- Subjects :
- Adult
Cholestasis pathology
Epithelium pathology
Epithelium physiology
Female
Graft Survival physiology
Humans
Ischemia etiology
Ischemia pathology
Male
Middle Aged
Predictive Value of Tests
Regeneration physiology
Stem Cell Niche
Tissue Donors
Bile Ducts, Extrahepatic injuries
Bile Ducts, Extrahepatic pathology
Cholestasis etiology
Liver Circulation
Liver Transplantation adverse effects
Subjects
Details
- Language :
- English
- ISSN :
- 1600-0641
- Volume :
- 60
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Journal of hepatology
- Publication Type :
- Academic Journal
- Accession number :
- 24560661
- Full Text :
- https://doi.org/10.1016/j.jhep.2014.02.010