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Kundert DN, Tavassol F, Kampmann A, Gellrich NC, Lindhorst D, Precht MM, Schumann P. Alendronate reduces periosteal microperfusion in vivo. Heliyon 2023; 9:e19468. [PMID: 37681156 PMCID: PMC10481298 DOI: 10.1016/j.heliyon.2023.e19468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/11/2023] [Accepted: 08/23/2023] [Indexed: 09/09/2023] Open
Abstract
Objectives Bisphosphonates are known to induce a severe adverse effect known as medication-related osteonecrosis of the jaw (MRONJ). Previous studies have proven the impact of bisphosphonates on microperfusion; therefore, this study aimed to investigate alendronate-induced microcirculatory reactions in the calvarial periosteum of rats. Study design Bone chambers were implanted into 48 Lewis rats. Microhemodynamics, inflammatory parameters, functional capillary density and defect healing were examined after alendronate treatment for two and six weeks using repetitive intravital fluorescence microscopy for two weeks. Results Microhemodynamics remained unchanged. In alendronate-treated rats, inflammation was slightly increased, functional capillary density was significantly reduced (day 10: controls 100.45 ± 5.38 cm/cm2, two weeks alendronate treatment 44.77 ± 3.55 cm/cm2, six weeks alendronate treatment 27.54 ± 2.23 cm/cm2) and defect healing was decelerated. The changes in functional capillary density and defect healing were dose-dependent. Conclusion The bisphosphonate alendronate has a significant negative impact on periosteal microperfusion in vivo. This could be a promising target for the treatment of MRONJ.
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Affiliation(s)
- Danielle N. Kundert
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland
| | - Frank Tavassol
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
| | - Andreas Kampmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
| | - Nils-Claudius Gellrich
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
| | - Daniel Lindhorst
- Kieferchirurgie-Zentrum-Hamburg, Lerchenfeld 14, 22081, Hamburg, Germany
| | - Marc M. Precht
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland
| | - Paul Schumann
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 24, 8091, Zürich, Switzerland
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2
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Chiou G, Jui E, Rhea AC, Gorthi A, Miar S, Acosta FM, Perez C, Suhail Y, Kshitiz, Chen Y, Ong JL, Bizios R, Rathbone C, Guda T. Scaffold Architecture and Matrix Strain Modulate Mesenchymal Cell and Microvascular Growth and Development in a Time Dependent Manner. Cell Mol Bioeng 2020; 13:507-526. [PMID: 33184580 PMCID: PMC7596170 DOI: 10.1007/s12195-020-00648-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 08/11/2020] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Volumetric tissue-engineered constructs are limited in development due to the dependence on well-formed vascular networks. Scaffold pore size and the mechanical properties of the matrix dictates cell attachment, proliferation and successive tissue morphogenesis. We hypothesize scaffold pore architecture also controls stromal-vessel interactions during morphogenesis. METHODS The interaction between mesenchymal stem cells (MSCs) seeded on hydroxyapatite scaffolds of 450, 340, and 250 μm pores and microvascular fragments (MVFs) seeded within 20 mg/mL fibrin hydrogels that were cast into the cell-seeded scaffolds, was assessed in vitro over 21 days and compared to the fibrin hydrogels without scaffold but containing both MSCs and MVFs. mRNA sequencing was performed across all groups and a computational mechanics model was developed to validate architecture effects on predicting vascularization driven by stiffer matrix behavior at scaffold surfaces compared to the pore interior. RESULTS Lectin staining of decalcified scaffolds showed continued vessel growth, branching and network formation at 14 days. The fibrin gel provides no resistance to spread-out capillary networks formation, with greater vessel loops within the 450 μm pores and vessels bridging across 250 μm pores. Vessel growth in the scaffolds was observed to be stimulated by hypoxia and successive angiogenic signaling. Fibrin gels showed linear fold increase in VEGF expression and no change in BMP2. Within scaffolds, there was multiple fold increase in VEGF between days 7 and 14 and early multiple fold increases in BMP2 between days 3 and 7, relative to fibrin. There was evidence of yap/taz based hippo signaling and mechanotransduction in the scaffold groups. The vessel growth models determined by computational modeling matched the trends observed experimentally. CONCLUSION The differing nature of hypoxia signaling between scaffold systems and mechano-transduction sensing matrix mechanics were primarily responsible for differences in osteogenic cell and microvessel growth. The computational model implicated scaffold architecture in dictating branching morphology and strain in the hydrogel within pores in dictating vessel lengths.
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Affiliation(s)
- Gennifer Chiou
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Elysa Jui
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Allison C. Rhea
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Aparna Gorthi
- Greehey Children’s Cancer Research Institute, University of Texas Health at San Antonio, San Antonio, TX 78229 USA
| | - Solaleh Miar
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Francisca M. Acosta
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Cynthia Perez
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Yasir Suhail
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030 USA
| | - Kshitiz
- Department of Biomedical Engineering, University of Connecticut Health Center, Farmington, CT 06030 USA
- Cancer Systems Biology at Yale, Yale University, West Haven, CT 06516 USA
| | - Yidong Chen
- Greehey Children’s Cancer Research Institute, University of Texas Health at San Antonio, San Antonio, TX 78229 USA
| | - Joo L. Ong
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Rena Bizios
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Christopher Rathbone
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
| | - Teja Guda
- Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX 78249 USA
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Cell seeding accelerates the vascularization of tissue engineering constructs in hypertensive mice. Hypertens Res 2020; 44:23-35. [PMID: 32778779 DOI: 10.1038/s41440-020-0524-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 06/22/2020] [Accepted: 06/24/2020] [Indexed: 11/08/2022]
Abstract
Rapid blood vessel ingrowth into transplanted constructs represents the key requirement for successful tissue engineering. Seeding three-dimensional scaffolds with suitable cells is an approved technique for this challenge. Since a plethora of patients suffer from widespread diseases that limit the capacity of neoangiogenesis (e.g., hypertension), we investigated the incorporation of cell-seeded poly-L-lactide-co-glycolide scaffolds in hypertensive (BPH/2J, group A) and nonhypertensive (BPN/3J, group B) mice. Collagen-coated scaffolds (A1 and B1) were additionally seeded with osteoblast-like (A2 and B2) and mesenchymal stem cells (A3 and B3). After implantation into dorsal skinfold chambers, inflammation and newly formed microvessels were measured using repetitive intravital fluorescence microscopy for 2 weeks. Apart from a weak inflammatory response in all groups, significantly increased microvascular densities were found in cell-seeded scaffolds (day 14, A2: 192 ± 12 cm/cm2, A3: 194 ± 10 cm/cm2, B2: 249 ± 19 cm/cm2, B3: 264 ± 17 cm/cm2) when compared with controls (A1: 129 ± 10 cm/cm2, B1: 185 ± 8 cm/cm2). In this context, hypertensive mice showed reduced neoangiogenesis in comparison with nonhypertensive animals. Therefore, seeding approved scaffolds with organ-specific or pluripotent cells is a very promising technique for tissue engineering in hypertensive organisms.
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Gniesmer S, Brehm R, Hoffmann A, de Cassan D, Menzel H, Hoheisel AL, Glasmacher B, Willbold E, Reifenrath J, Ludwig N, Zimmerer R, Tavassol F, Gellrich NC, Kampmann A. Vascularization and biocompatibility of poly(ε-caprolactone) fiber mats for rotator cuff tear repair. PLoS One 2020; 15:e0227563. [PMID: 31929570 PMCID: PMC6957163 DOI: 10.1371/journal.pone.0227563] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/20/2019] [Indexed: 12/22/2022] Open
Abstract
Rotator cuff tear is the most frequent tendon injury in the adult population. Despite current improvements in surgical techniques and the development of grafts, failure rates following tendon reconstruction remain high. New therapies, which aim to restore the topology and functionality of the interface between muscle, tendon and bone, are essentially required. One of the key factors for a successful incorporation of tissue engineered constructs is a rapid ingrowth of cells and tissues, which is dependent on a fast vascularization. The dorsal skinfold chamber model in female BALB/cJZtm mice allows the observation of microhemodynamic parameters in repeated measurements in vivo and therefore the description of the vascularization of different implant materials. In order to promote vascularization of implant material, we compared a porous polymer patch (a commercially available porous polyurethane based scaffold from Biomerix™) with electrospun polycaprolactone (PCL) fiber mats and chitosan-graft-PCL coated electrospun PCL (CS-g-PCL) fiber mats in vivo. Using intravital fluorescence microscopy microcirculatory parameters were analyzed repetitively over 14 days. Vascularization was significantly increased in CS-g-PCL fiber mats at day 14 compared to the porous polymer patch and uncoated PCL fiber mats. Furthermore CS-g-PCL fiber mats showed also a reduced activation of immune cells. Clinically, these are important findings as they indicate that the CS-g-PCL improves the formation of vascularized tissue and the ingrowth of cells into electrospun PCL scaffolds. Especially the combination of enhanced vascularization and the reduction in immune cell activation at the later time points of our study points to an improved clinical outcome after rotator cuff tear repair.
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Affiliation(s)
- Sarah Gniesmer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
- NIFE—Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Ralph Brehm
- Institute for Anatomy, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Andrea Hoffmann
- NIFE—Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
- Department of Orthopedic Surgery, Laboratory for Biomechanics and Biomaterials, Graded Implants and Regenerative Strategies, Hannover Medical School, Hannover, Germany
| | - Dominik de Cassan
- Institute for Technical Chemistry, Braunschweig University of Technology, Braunschweig, Germany
| | - Henning Menzel
- Institute for Technical Chemistry, Braunschweig University of Technology, Braunschweig, Germany
| | - Anna Lena Hoheisel
- NIFE—Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
- Institute of Multiphase Processes, Leibniz University Hannover, Hannover, Germany
| | - Birgit Glasmacher
- NIFE—Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
- Institute of Multiphase Processes, Leibniz University Hannover, Hannover, Germany
| | - Elmar Willbold
- NIFE—Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
- Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Janin Reifenrath
- NIFE—Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
- Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Nils Ludwig
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America
| | - Ruediger Zimmerer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Frank Tavassol
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Nils-Claudius Gellrich
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Andreas Kampmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
- NIFE—Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
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5
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Angiogenic effects of mesenchymal stem cells in combination with different scaffold materials. Microvasc Res 2020; 127:103925. [DOI: 10.1016/j.mvr.2019.103925] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 08/14/2019] [Accepted: 09/11/2019] [Indexed: 12/26/2022]
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6
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Gniesmer S, Brehm R, Hoffmann A, de Cassan D, Menzel H, Hoheisel AL, Glasmacher B, Willbold E, Reifenrath J, Wellmann M, Ludwig N, Tavassol F, Zimmerer R, Gellrich NC, Kampmann A. In vivo analysis of vascularization and biocompatibility of electrospun polycaprolactone fibre mats in the rat femur chamber. J Tissue Eng Regen Med 2019; 13:1190-1202. [PMID: 31025510 PMCID: PMC6771623 DOI: 10.1002/term.2868] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 12/12/2022]
Abstract
In orthopaedic medicine, connective tissues are often affected by traumatic or degenerative injuries, and surgical intervention is required. Rotator cuff tears are a common cause of shoulder pain and disability among adults. The development of graft materials for bridging the gap between tendon and bone after chronic rotator cuff tears is essentially required. The limiting factor for the clinical success of a tissue engineering construct is a fast and complete vascularization of the construct. Otherwise, immigrating cells are not able to survive for a longer period of time, resulting in the failure of the graft material. The femur chamber allows the observation of microhaemodynamic parameters inside implants located in close vicinity to the femur in repeated measurements in vivo. We compared a porous polymer patch (a commercially available porous polyurethane‐based scaffold from Biomerix™) with electrospun polycaprolactone (PCL) fibre mats and chitosan (CS)‐graft‐PCL modified electrospun PCL (CS‐g‐PCL) fibre mats in vivo. By means of intravital fluorescence microscopy, microhaemodynamic parameters were analysed repetitively over 20 days at intervals of 3 to 4 days. CS‐g‐PCL modified fibre mats showed a significantly increased vascularization at Day 10 compared with Day 6 and at Day 14 compared with the porous polymer patch and the unmodified PCL fibre mats at the same day. These results could be verified by histology. In conclusion, a clear improvement in terms of vascularization and biocompatibility is achieved by graft‐copolymer modification compared with the unmodified material.
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Affiliation(s)
- Sarah Gniesmer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany.,NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Ralph Brehm
- Institute for Anatomy, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Andrea Hoffmann
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Department of Orthopedic Surgery, Laboratory for Biomechanics and Biomaterials, Graded Implants and Regenerative Strategies, Hannover Medical School, Hannover, Germany
| | - Dominik de Cassan
- Institute for Technical Chemistry, University of Technology, Braunschweig, Germany
| | - Henning Menzel
- Institute for Technical Chemistry, University of Technology, Braunschweig, Germany
| | - Anna-Lena Hoheisel
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Institute for Multiphase Processes, Leibniz University of Hannover, Hannover, Germany
| | - Birgit Glasmacher
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Institute for Multiphase Processes, Leibniz University of Hannover, Hannover, Germany
| | - Elmar Willbold
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Janin Reifenrath
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Mathias Wellmann
- Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Nils Ludwig
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Frank Tavassol
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Ruediger Zimmerer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Nils-Claudius Gellrich
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Andreas Kampmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany.,NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
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7
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Accelerated vascularization of tissue engineering constructs in vivo by preincubated co-culture of aortic fragments and osteoblasts. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2015.09.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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8
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Zimmerer RM, Matthiesen P, Kreher F, Kampmann A, Spalthoff S, Jehn P, Bittermann G, Gellrich NC, Tavassol F. Putative CD133+ melanoma cancer stem cells induce initial angiogenesis in vivo. Microvasc Res 2015; 104:46-54. [PMID: 26656667 DOI: 10.1016/j.mvr.2015.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 11/24/2015] [Accepted: 12/01/2015] [Indexed: 12/17/2022]
Abstract
Tumor angiogenesis is essential for tumor growth and metastasis, and is regulated by a complex network of various types of cells, chemokines, and stimulating factors. In contrast to sprouting angiogenesis, tumor angiogenesis is also influenced by hypoxia, inflammation, and the attraction of bone-marrow-derived cells. Recently, cancer stem cells have been reported to mimic vascularization by differentiating into endothelial cells and inducing vessel formation. In this study, the influence of cancer stem cells on initial angiogenesis was evaluated for the metastatic melanoma cell line D10. Following flow cytometry, CD133+ and CD133- cells were isolated using magnetic cell separation and different cell fractions were transferred to porcine gelatin sponges, which were implanted into the dorsal skinfold chamber of immunocompromised mice. Angiogenesis was analyzed based on microvessel density over a 10-day period using in vivo fluorescence microscopy, and the results were verified using immunohistology. CD133+ D10 cells showed a significant induction of early angiogenesis in vivo, contrary to CD133- D10 cells, unsorted D10 cells, and negative control. Neovascularization was confirmed by visualizing endothelial cells by immunohistology using an anti-CD31 antibody. Because CD133+ cells are rare in clinical specimens and hardly amenable to functional assays, the D10 cell line provides a suitable model to study the angiogenic potential of putative cancer stem cells and the leukocyte-endothelial cell interaction in the dorsal skinfold chamber in vivo. This cancer stem cell model might be useful in the development and evaluation of therapeutic agents targeting tumors.
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Affiliation(s)
- Rüdiger M Zimmerer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Peter Matthiesen
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Fritjof Kreher
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Andreas Kampmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Simon Spalthoff
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Philipp Jehn
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Gido Bittermann
- Department of Oral and Maxillofacial Surgery, University of Freiburg Medical School, Hugstetter Str. 53, 70164 Freiburg, Germany.
| | - Nils-Claudius Gellrich
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Frank Tavassol
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
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Schumann P, Lindhorst D, Kampmann A, Gellrich NC, Krone-Wolf S, Meyer-Lindenberg A, von See C, Gander T, Lanzer M, Rücker M, Essig H. Decelerated vascularization in tissue-engineered constructs in association with diabetes mellitus in vivo. J Diabetes Complications 2015. [PMID: 26195138 DOI: 10.1016/j.jdiacomp.2015.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AIMS Rapid blood vessel ingrowth in transplanted tissue engineering constructs is the key factor for successful incorporation, but many potential patients who may use engineered tissues suffer from widespread diseases that limit the capacity of neovascularization (e.g. diabetes). Thus, in vivo vascularization analyses of tissue-engineered constructs in angiogenically affected organisms are required. METHODS We therefore investigated the in vivo incorporation of collagen-coated and cell-seeded poly-L-lactide-co-glycolide scaffolds in diabetic B6.BKS(D)-Lepr(db)/J mice using repetitive intravital fluorescence microscopy over a time period of two weeks. For this purpose, scaffolds were seeded with osteoblast-like or bone marrow mesenchymal stem cells and implanted into the dorsal skinfold chambers of diabetic and non-diabetic (C57BL/6) mice. RESULTS Apart from slightly increased inflammatory parameters, diabetic mice showed significantly reduced capillary densities compared with non-diabetic animals from day 6 onward. In line with previous studies, more densely meshed microvascular networks were demonstrated in cell-seeded than in collagen-coated scaffolds from day 6 onward within the single groups (diabetic and control). CONCLUSIONS A large number of patients who suffer from systemic diseases that affect angiogenesis would profit from tissue engineering. Therefore, the challenge for the clinical introduction of tissue-engineered constructs will be to overcome the decreased angiogenesis in diabetic organisms.
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Affiliation(s)
- Paul Schumann
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland.
| | - Daniel Lindhorst
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland.
| | - Andreas Kampmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany.
| | - Nils-Claudius Gellrich
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany.
| | - Sonja Krone-Wolf
- Small Animal Clinic, University of Veterinary Medicine, Hannover, Germany.
| | - Andrea Meyer-Lindenberg
- Clinic for Small Animal Surgery and Reproduction, Ludwig-Maximilians-University, Munich, Germany.
| | - Constantin von See
- Center of CAD/CAM and digital technologies in dentistry, Danube Private University, Krems-Stein, Austria.
| | - Thomas Gander
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland.
| | - Martin Lanzer
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland.
| | - Martin Rücker
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland.
| | - Harald Essig
- Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, Zurich, Switzerland.
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10
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Kokemüller H, Jehn P, Spalthoff S, Essig H, Tavassol F, Schumann P, Andreae A, Nolte I, Jagodzinski M, Gellrich NC. En bloc prefabrication of vascularized bioartificial bone grafts in sheep and complete workflow for custom-made transplants. Int J Oral Maxillofac Surg 2014; 43:163-72. [DOI: 10.1016/j.ijom.2013.10.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 08/25/2013] [Accepted: 10/10/2013] [Indexed: 12/18/2022]
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11
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Schumann P, Lindhorst D, von See C, Menzel N, Kampmann A, Tavassol F, Kokemüller H, Rana M, Gellrich NC, Rücker M. Accelerating the early angiogenesis of tissue engineering constructs in vivo by the use of stem cells cultured in matrigel. J Biomed Mater Res A 2013; 102:1652-62. [PMID: 23776037 DOI: 10.1002/jbm.a.34826] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Revised: 05/15/2013] [Accepted: 05/31/2013] [Indexed: 11/11/2022]
Abstract
In tissue engineering research, generating constructs with an adequate extent of clinical applications remains a major challenge. In this context, rapid blood vessel ingrowth in the transplanted tissue engineering constructs is the key factor for successful incorporation. To accelerate the microvascular development in engineered tissues, we preincubated osteoblast-like cells as well as mesenchymal stem cells or a combination of both cell types in Matrigel-filled PLGA scaffolds before transplantation into the dorsal skinfold chambers of balb/c mice. By the use of preincubated mesenchymal stem cells, a significantly accelerated angiogenesis was achieved. Compared with previous studies that showed a decisive increase of vascularization on day 6 after the implantation, we were able to halve this period and achieve explicitly denser microvascular networks 3 days after transplantation of the tissue engineering constructs. Thereby, the inflammatory host tissue response was acceptable and low, comparable with former investigations. A co-incubation of osteoblast-like cells and stem cells showed no additive effect on the density of the newly formed microvascular network. Preincubation of mesenchymal stem cells in Matrigel is a promising approach to develop rapid microvascular growth into tissue engineering constructs. After the implantation into the host organism, scaffolds comprising stem cells generate microvascular capillary-like structures exceptionally fast. Thereby, transplanted stem cells likely differentiate into vessel-associated cells. For this reason, preincubation of mesenchymal stem cells in nutrient solutions supporting different steps of angiogenesis provides a technique to promote the routine use of tissue engineering in the clinic.
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Affiliation(s)
- Paul Schumann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
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