Angele, Peter and Fritz, Juergen and Albrecht, Dirk and Koh, Jason and Zellner, Johannes (2015) Defect type, localization and marker gene expression determines early adverse events of matrix-associated autologous chondrocyte implantation. INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED, 46. S2-S9. ISSN 0020-1383, 1879-0267
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Introduction: Since the first description of autologous chondrocyte implantation (ACI) in 1994 different methods and improvements were established for this regenerative treatment option of large chondral defects. This study analyzes safety and short-term clinical results from characterized ACI using a collagen based biphasic scaffold and evaluates prognostic factors. Methods: 433 patients with a mean age of 33.4 years and localized grade III to IV cartilage defects (ICRS classification) in the knee or ankle were included. Mean defect size was 5.9 cm(2). Prior seeding of the scaffold, expanded chondrocytes were characterized by RT-PCR on 6 different marker genes (type I and II collagen, aggrecan, interleukin-1 beta (IL-1 beta), vascular endothelial growth factor receptor 1 (FLT-1) and bone sialoprotein -2 (BSP-2)). Clinical outcome was evaluated using a questionnaire for defect history, basic demographics, time elapsed from surgery, 10-point outcome assessments of pain, function and swelling. Moreover, adverse events (AEs) or subsequent treatments were recorded and analysed. Results: Patients improved significantly over baseline (p < 0.0001) in pain, function and swelling. Subjects with later than 12 months follow-up reported nominally greater mean changes. Graft failure incidence was 6% for patients with greater than one year follow-up. Graft-related complications were significantly higher for patellar (p < 0.0001) and degenerative defects (p = 0.005). Elevated expression of FLT-1 (p = 0.02) or IL-1 beta mRNA (p = 0.03) was associated with graft-related AEs. A bor derline association was found for low collagen type II expression (p = 0.08). Conclusion: Early graft-related AEs after ACI with a biphasic collagen scaffold are related to defect type, location and marker gene expression. The levels of significance observed for gene expression with respect to graft-related AEs were subordinate to those identified in the analysis of lesion history and location. (C) 2015 Elsevier Ltd. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ARTICULAR-CARTILAGE LESIONS; 2-YEAR FOLLOW-UP; OSTEOCHONDRITIS-DISSECANS; GRAFT HYPERTROPHY; CHONDRAL DEFECTS; KNEE; TRANSPLANTATION; REPAIR; OSTEOARTHRITIS; SCAFFOLD; cartilage defect; MACT; cell characterization; adverse events; short-term clinical outcome |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Unfallchirurgie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jun 2019 08:37 |
| Last Modified: | 06 Jun 2019 08:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4696 |
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