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Erschienen in: Archives of Orthopaedic and Trauma Surgery 9/2007

01.11.2007 | Arthroscopy and Sports Medicine

Tissue engineering of tendons and ligaments by human bone marrow stromal cells in a liquid fibrin matrix in immunodeficient rats: Results of a histologic study

verfasst von: Stefan Hankemeier, Martijn van Griensven, Marco Ezechieli, Tanja Barkhausen, Matthew Austin, Michael Jagodzinski, Rupert Meller, Ulrich Bosch, Christian Krettek, Johannes Zeichen

Erschienen in: Archives of Orthopaedic and Trauma Surgery | Ausgabe 9/2007

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Abstract

Introduction

The original complex structure and mechanical properties are not fully restored after ligament and tendon injuries. Due to their high proliferation rate and differentiation potential, Bone Marrow Stromal Cells (BMSC) are considered to be an ideal cell source for tissue engineering to optimize the healing process. Ideal matrices for tissue engineering of ligaments and tendons should allow for homogenous cell seeding and offer sufficient stability.

Material and methods

A mixture of human BMSC and liquid fibrin glue was injected into a standardized full-thickness window defect of the patellar tendon of immunodeficient rats (BMSC group). The histology of the tissue was analysed 10 and 20 days postoperatively and compared to four control groups. These groups consisted of a cohort with a mixture of human fibroblasts and fibrin glue, fibrin glue without cells, a defect group without treatment, and a group with uninjured patellar tendon tissue.

Results

Tendon defects in the BMSC group revealed dense collagen fibres and spindle-shaped cells, which were mainly orientated along the loading axis. Histologic sections of the control groups, especially of untreated defects and of defects filled with fibrin glue only, showed irregular patterns of cell distribution, irregular formed cell nucleoli and less tissue maturation. Compared to healthy tendon tissue, higher numbers of cells and less intense matrix staining was observed in the BMSC group. No ectopic bone or cartilage formation was observed in any specimen.

Conclusions

Injection of human BMSC in a fibrin glue matrix appears to lead to more mature tissue formation with more regular patterns of cell distribution. Advantages of this “in-vivo” tissue engineering approach are a homogenous cell-matrix mixture in a well-known and approved biological matrix, and simple, minimally-invasive application by injection.
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Metadaten
Titel
Tissue engineering of tendons and ligaments by human bone marrow stromal cells in a liquid fibrin matrix in immunodeficient rats: Results of a histologic study
verfasst von
Stefan Hankemeier
Martijn van Griensven
Marco Ezechieli
Tanja Barkhausen
Matthew Austin
Michael Jagodzinski
Rupert Meller
Ulrich Bosch
Christian Krettek
Johannes Zeichen
Publikationsdatum
01.11.2007
Verlag
Springer-Verlag
Erschienen in
Archives of Orthopaedic and Trauma Surgery / Ausgabe 9/2007
Print ISSN: 0936-8051
Elektronische ISSN: 1434-3916
DOI
https://doi.org/10.1007/s00402-007-0366-z

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