Összesen 3 találat.


001-es BibID:BIBFORM118410
035-os BibID:(cikkazonosító)2300931 (Scopus)85168319047 (WOS)001049575600001
Első szerző:Gao, Liang
Cím:A Photopolymerizable Biocompatible Hyaluronic Acid Hydrogel Promotes Early Articular Cartilage Repair in a Minipig Model In Vivo / Liang Gao, Riccardo Beninatto, Tamás Oláh, Lars Goebel, Ke Tao, Rebecca Roels, Steffen Schrenker, Julianne Glomm, Jagadeesh K. Venkatesan, Gertrud Schmitt, Ebrar Sahin, Ola Dahhan, Mauro Pavan, Carlo Barbera, Alba Di Lucia, Michael D. Menger, Matthias W. Laschke, Magali Cucchiarini, Devis Galesso, Henning Madry
ISSN:2192-2640 2192-2659
Megjegyzések:Articular cartilage defects represent an unsolved clinical challenge. Photopolymerizable hydrogels are attractive candidates supporting repair. This study investigates the short-term safety and efficacy of two novel hyaluronic acid (HA)-triethylene glycol (TEG)-coumarin hydrogels photocrosslinked in situ in a clinically relevant large animal model. It is hypothesized that HA-hydrogel-augmented microfracture (MFX) is superior to MFX in enhancing early cartilage repair, and that the molar degree of substitution and concentration of HA affects repair. Chondral full-thickness defects in the knees of adult minipigs are treated with either 1) debridement (No MFX), 2) debridement and MFX, 3) debridement, MFX, and HA hydrogel (30% molar derivatization, 30 mg mL?1 HA; F3) (MFX+F3), and 4) debridement, MFX, and HA hydrogel (40% molar derivatization, 20 mg mL?1 HA; F4) (MFX+F4). After 8 weeks postoperatively, MFX+F3 significantly improves total macroscopic and histological scores compared with all other groups without negative effects, besides significantly enhancing the individual repair parameters "defect architecture," "repair tissue surface" (compared with No MFX, MFX), and "subchondral bone" (compared with MFX). These data indicate that photopolymerizable HA hydrogels enable a favorable metastable microenvironment promoting early chondrogenesis in vivo. This work also uncovers a mechanism for effective HA-augmented cartilage repair by combining lower molar derivatization with higher concentrations.
Tárgyszavak:Orvostudományok Gyógyszerészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
cartilage defects
cartilage repairs
hyaluronic acid
large animal model
Megjelenés:Advanced Healthcare Materials. - 12 : 26 (2023), p. 2300931. -
További szerzők:Beninatto, Riccardo Oláh Tamás (1983-) (élettanász) Goebel, Lars Tao, Ke Roels, Rebecca Schrenker, Steffen Glomm, Julianne Venkatesan, Jagadeesh K. Schmitt, Gertrud Sahin, Ebrar Dahhan, Ola Pavan, Mauro Barbera, Carlo Lucia, Alba Di Menger, Michael D. Laschke, Matthias W. Cucchiarini, Magali Galesso, Devis Madry, Henning
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001-es BibID:BIBFORM114906
035-os BibID:(Scopus)85123905875 (WOS)000747294800006 (cikkazonosító)eabn0179
Első szerző:Oláh Tamás (élettanász)
Cím:Axial alignment is a critical regulator of knee osteoarthritis / Tamás Oláh, Jan Reinhard, Matthias W. Laschke, Lars K. H. Goebel, Frédéric Walter, Gertrud Schmitt, Susanne Speicher-Mentges, Michael D. Menger, Magali Cucchiarini, Dietrich Pape, Henning Madry
Megjegyzések:Although osteoarthritis (OA), a leading cause of disability, has been associated with joint malalignment, scientific translational evidence for this link is lacking. In a clinical case study, we provide evidence of osteochondral recovery upon unloading symptomatic isolated medial tibiofemoral knee OA associated with varus malalignment. By mapping response correlations at high resolution, we identify spatially complex degenerative changes in cartilage after overloading in a clinically relevant ovine model. We further report that unloading diminishes OA cartilage degeneration and alterations of critical parameters of the subchondral bone plate in a similar topographic fashion. Last, therapeutic unloading shifted the articular cartilage and subchondral bone phenotype to normal and restored several physiological correlations disturbed in neutral and varus OA, suggesting a protective effect on the integrity of the entire osteochondral unit. Collectively, these findings identify modifiable trajectories with considerable translational potential to reduce the burden of human OA.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Science Translational Medicine. - 14 : 629 (2022), p. eabn0179. -
További szerzők:Reinhard, Jan Laschke, Matthias W. Goebel, Lars Walter, Frédéric Schmitt, Gertrud Speicher-Mentges, Susanne Menger, Michael D. Cucchiarini, Magali Pape, Dietrich Madry, Henning
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001-es BibID:BIBFORM114717
035-os BibID:(WoS)000953912600001 (Scopus)85144755733
Első szerző:Schrenker, Steffen
Cím:In vivo rAAV-mediated human TGF-β overexpression reduces perifocal osteoarthritis and improves osteochondral repair in a large animal model at one year / S. Schrenker, M. Cucchiarini, L. Goebel, T. Olah, J. K. Venkatesan, G. Schmitt, S. Speicher-Mentges, J. Maihofer, L. Gao, D. Zurakowski, M. D. Menger, M. W. Laschke, H. Madry
Megjegyzések:Objective: Osteoarthritis (OA) is a serious consequence of focal osteochondral defects. Gene transfer of human transforming growth factor beta (hTGF-β) with recombinant adeno-associated virus (rAAV) vectors offers a strategy to improve osteochondral repair. However, the long-term in vivo effects of such rAAV-mediated TGF-β overexpression including its potential benefits on OA development remain unknown. Method: Focal osteochondral defects in minipig knees received rAAV-lacZ (control) or rAAV-hTGF-β in vivo. After one year, osteochondral repair and perifocal OA were visualized using validated macroscopic scoring, ultra-high-field MRI at 9.4 T, and micro-CT. A quantitative estimation of the cellular densities and a validated semi-quantitative scoring of histological and immunohistological parameters completed the analysis of microarchitectural parameters. Results: Direct rAAV-hTGF-β application induced and maintained significantly improved defect filling and safranin O staining intensity and overall cartilage repair at one year in vivo. In addition, rAAV-hTGF-β led to significantly higher chondrocyte densities within the cartilaginous repair tissue without affecting chondrocyte hypertrophy and minimized subarticular trabecular separation. Of note, rAAV-hTGF-β significantly improved the adjacent cartilage structure and chondrocyte density and reduced overall perifocal OA development after one year in vivo. Conclusions: rAAV-hTGF-β treatment improves long-term osteochondral repair and delays the progression of perifocal OA in a translational model. These findings have considerable potential for targeted molecular approaches to treat focal osteochondral defects.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Osteochondral defects
Large animal model
Cartilage repair
Megjelenés:Osteoarthritis And Cartilage. - 31 : 4 (2023), p. 467-481. -
További szerzők:Cucchiarini, Magali Goebel, Lars Oláh Tamás (1983-) (élettanász) Venkatesan, Jagadeesh K. Schmitt, Gertrud Speicher-Mentges, Susanne Maihöfer, J. Gao, L. L. Zurakowski, D. Menger, Michael D. Laschke, Matthias W. Madry, Henning
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