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Flexor Tendon Tissue Engineering: Temporal Distribution of Donor Tenocytes versus Recipient Cells
Linköping University, Department of Clinical and Experimental Medicine, Surgery . Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Reconstruction Centre, Department of Plastic Surgery, Hand surgery UHL.
Stanford University Medical Center.
Stanford University Medical Center.
Stanford University Medical Center.
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2009 (English)In: Plastic and reconstructive surgery (1963), ISSN 0032-1052, E-ISSN 1529-4242, Vol. 124, no 6, 2019-2026 p.Article in journal (Refereed) Published
Abstract [en]

Background: Tissue-engineered tendon material may address tendon shortages in mutilating hand injuries. Tenocytes from rabbit flexor tendon can be successfully seeded onto acellularized tendons that are used as tendon constructs. These constructs in vivo exhibit a population of tenocyte-like cells; however, it is not known to what extent these cells are of donor or recipient origin. Furthermore, the temporal distribution is also not known. Methods: Tenocytes from New Zealand male rabbits were cultured and seeded onto acellularized rabbit forepaw flexor tendons (n = 48). These tendon constructs were transplanted into female recipients. Tendons were examined after 3, 6, 12, and 30 weeks using fluorescent in situ hybridization to detect the Y chromosome in the male donor cells. One unseeded, acellularized allograft in each animal was used as a control. Results: The donor male tenocytes populate the epitenon and endotenon of the grafts at greater numbers than the recipient female tenocytes at 3 and 6 weeks. The donor and recipient tenocytes are present jointly in the grafts until 12 weeks. At 30 weeks, nearly all cells are recipient tenocyte-like cells. Conclusions: Donor male cells survive in decreasing numbers over time until 30 weeks. The presence of cells in tissue-engineered tendon grafts has been shown in prior studies to add to the strength of the constructs in vitro. This study shows that recipient cells can migrate into and repopulate the tendon construct. Cell seeding onto tendon material may create stronger constructs that will allow the initiation of motion earlier. (Plast. Reconstr. Surg. 124: 2019, 2009.)

Place, publisher, year, edition, pages
2009. Vol. 124, no 6, 2019-2026 p.
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Social Sciences
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URN: urn:nbn:se:liu:diva-53876DOI: 10.1097/PRS.0b013e3181bcf320ISI: 000272615600032OAI: oai:DiVA.org:liu-53876DiVA: diva2:292397
Available from: 2010-02-06 Created: 2010-02-06 Last updated: 2017-12-12

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Thorfinn, Johan

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Surgery Faculty of Health SciencesDepartment of Plastic Surgery, Hand surgery UHL
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