Autologous Adipose Tissue-Derived Mesenchymal Stem Cells Introduced by Biliary Stents or Local Immersion in Porcine Bile Duct Anastomoses.
Journal
Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society
ISSN: 1527-6473
Titre abrégé: Liver Transpl
Pays: United States
ID NLM: 100909185
Informations de publication
Date de publication:
01 2020
01 2020
Historique:
received:
16
05
2019
accepted:
29
10
2019
pubmed:
20
11
2019
medline:
19
3
2021
entrez:
20
11
2019
Statut:
ppublish
Résumé
Biliary complications (strictures and leaks) represent major limitations in living donor liver transplantation. Mesenchymal stem cells (MSCs) are a promising modality to prevent biliary complications because of immunosuppressive and angiogenic properties. Our goal was to evaluate the safety of adipose-derived MSC delivery to biliary anastomoses in a porcine model. Secondary objectives were defining the optimal method of delivery (intraluminal versus extraluminal) and to investigate MSC engraftment, angiogenesis, and fibrosis. Pigs were divided into 3 groups. Animals underwent adipose collection, MSC isolation, and expansion. Two weeks later, animals underwent bile duct transection, reanastomosis, and stent insertion. Group 1 received plastic stents wrapped in unseeded Vicryl mesh. Group 2 received stents wrapped in MSC-seeded mesh. Group 3 received unwrapped stents with the anastomosis immersed in an MSC suspension. Animals were killed 1 month after stent insertion when cholangiograms and biliary tissue were obtained. Serum was collected for liver biochemistries. Tissue was used for hematoxylin-eosin and trichrome staining and immunohistochemistry for MSC markers (CD44 and CD34) and for a marker of neoangiogenesis (CD31). There were no intraoperative complications. One pig died on postoperative day 3 due to acute cholangitis. All others recovered without complications. Cholangiography demonstrated no biliary leaks and minimal luminal narrowing. Surviving animals exhibited no symptoms, abnormal liver biochemistries, or clinically significant biliary stricturing. Group 3 showed significantly greater CD44 and CD34 staining, indicating MSC engraftment. Fibrosis was reduced at the anastomotic site in group 3 based on trichrome stain. CD31 staining of group 3 was more pronounced, supporting enhanced neoangiogenesis. In conclusion, adipose-derived MSCs were safely applied to biliary anastomoses. MSCs were locally engrafted within the bile duct and may have beneficial effects in terms of fibrosis and angiogenesis.
Identifiants
pubmed: 31742878
doi: 10.1002/lt.25682
pmc: PMC7061488
mid: NIHMS1060298
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
100-112Subventions
Organisme : NIDDK NIH HHS
ID : R03 DK113339
Pays : United States
Organisme : NIDDK NIH HHS
ID : R01 DK106667
Pays : United States
Organisme : NIDDK NIH HHS
ID : R01 DK117861
Pays : United States
Organisme : NIDDK NIH HHS
ID : P30 DK084567
Pays : United States
Informations de copyright
Copyright © 2019 by the American Association for the Study of Liver Diseases.
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