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Zhang H, Xu M, Zhao Y, Li Z, Han B, Wang S, Zhang J, Zhang J, Hu Y. Can the Sterilization Protocol Be Improved to Enhance the Healing of Allograft Tendons? An In Vivo Study in Rabbit Tendons. Clin Orthop Relat Res 2024; 482:1074-1086. [PMID: 38427791 PMCID: PMC11124595 DOI: 10.1097/corr.0000000000003017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/31/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Peracetic acid and irradiation are common sterilization methods for allograft tendons; however, under some conditions, both methods adversely affect the fiber arrangement and ultimate load of the tendon. An in vitro study showed that low-dose peracetic acid combined with irradiation may be less detrimental to allograft tendon structure and properties, possibly because the breakdown of peracetic acid can lead to an enlargement of the interstitial spaces and an increase in porosity. QUESTIONS/PURPOSES Using a rabbit Achilles tendon model, we asked: What is the effect of peracetic acid-ethanol combined irradiation on (1) the histopathology and fiber diameter of the allograft tendon, (2) tensile creep and load-to-failure biomechanical properties of allograft tendons, and (3) healing of the treated tendon in vivo compared with fresh-frozen allograft and peracetic acid-ethanol sterilization at 4 and 8 weeks? METHODS The Achilles tendons used in this study were sourced from euthanized 10-week-old male New Zealand White rabbits previously used for ophthalmic experiments. All allografts were divided into three groups: fresh-frozen group (control group, n = 20), peracetic acid-ethanol sterilization group (n =20), and peracetic acid-ethanol combined irradiation group (n = 20). The sterilization protocols were performed per a predetermined plan. In the peracetic acid-ethanol sterilization group, the tendon tissues were covered with the peracetic acid-ethanol sterilization solution (1% peracetic acid for 30 minutes). In the peracetic acid-ethanol combined irradiation group, the tendon tissues were covered with the peracetic acid-ethanol sterilization solution (0.2% peracetic acid for 30 minutes) and were subjected to 15 kGy gamma irradiation. Thirty 10-week-old male New Zealand White rabbits received bilateral Achilles tendon allografts surgically. Tendon samples from each group were harvested at 4 weeks (n = 30) and 8 weeks (n = 30) postoperatively. For each timepoint, eight tissues were used for histologic staining and electron microscopy, 15 tissues were used for biomechanical testing, and seven tissues were used for hydroxyproline assay and quantitative polymerase chain reaction. Histopathology was determined qualitatively by hematoxylin and eosin and Masson staining, while fiber diameter was measured quantitatively by transmission electron microscopy. Biomechanical properties were measured using cyclic loading tests and load-to-failure tests. The healing outcome was quantitatively judged through healing-related genes and proteins. RESULTS At 4 weeks and 8 weeks postoperatively, the peracetic acid-ethanol combined irradiation group visually demonstrated the best continuity and minimal peripheral adhesions. Histologic staining showed that tendon fibers in the peracetic acid-ethanol combined irradiation group maintained consistent alignment without notable disruptions or discontinuities, and there was a qualitatively observed increase in the number of infiltrating cells compared with the control group at the 4-week timepoint (444 ± 49 /mm 2 versus 256 ± 43 /mm 2 , mean difference 188 /mm 2 [95% confidence interval 96 to 281]; p < 0.001). At 8 weeks postoperatively, the tendon fiber diameter in the peracetic acid-ethanol combined irradiation groups was similar to that of the control group (0.23 ± 0.04 µm versus 0.21 ± 0.03 µm, mean difference 0.02 µm [95% CI -0.04 to 0.08]; p = 0.56). At 8 weeks postoperatively, the peracetic acid-ethanol combined irradiation group exhibited better properties in terms of both ultimate load (129 ± 15 N versus 89 ± 20 N, mean difference 40 N [95% CI 7 to 73]; p = 0.02) and energy absorption density (17 ± 6 kJ/m 2 versus 8 ± 4 kJ/m 2 , mean difference 8 kJ/m 2 [95% CI 0.7 to 16]; p = 0.004) compared with the control group. Gene expression analysis revealed higher expression levels of COL1A1 (2.1 ± 0.8 versus 1.0 ± 0, mean difference 1.1 [95% CI 0.1 to 2.1]; p = 0.003) and MMP13 (2.0 ± 0.8 versus 1.0 ± 0, mean difference 1.0 [95% CI 0.4 to 1.6]; p = 0.03) in the peracetic acid-ethanol combined irradiation group than in the control group. There was a higher amount of collagen Type I in tendons treated with peracetic acid-ethanol combined irradiation than in the control group (0.36 ± 0.03 versus 0.31 ± 0.04, mean difference 0.05 [95% CI 0.01 to 0.09]; p = 0.02). CONCLUSION Treatment with peracetic acid-ethanol combined irradiation did not have any discernible adverse effect on the histology, fiber diameter, enzymatic resistance, collagen content, or biomechanical strength of the allograft tendons compared with the control group. Peracetic acid-ethanol combined irradiation treatment had a positive impact on remodeling of the extracellular matrix and realignment of collagen fibers. CLINICAL RELEVANCE This sterilization method could be helpful to expand the scope and frequency with which allogeneic materials are applied. The long-term healing effect and strength of allograft tendons must be tested before clinical use, and it is necessary to conduct comparative studies on autografts and synthetic materials that are currently widely used clinically.
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Affiliation(s)
- Haoran Zhang
- Department of Bone Tumor, Tianjin Hospital, Tianjin, China
| | - Mingyou Xu
- Department of Orthopedics, The First Affiliated Hospital of University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yiwei Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Zhiyi Li
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Bingtai Han
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Shengru Wang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Jingyu Zhang
- Department of Bone Tumor, Tianjin Hospital, Tianjin, China
| | - Jianguo Zhang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Yongcheng Hu
- Department of Bone Tumor, Tianjin Hospital, Tianjin, China
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Han Q, Koyama T, Watabe S, Ishizaki S. Functional and Structural Properties of Type V Collagen from the Skin of the Shortbill Spearfish ( Tetrapturus angustirostris). Molecules 2024; 29:2518. [PMID: 38893394 PMCID: PMC11173678 DOI: 10.3390/molecules29112518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/12/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024] Open
Abstract
Type V collagen is considered to be a crucial minor collagen in fish skin with unique physiological functions. In this research, the cDNAs of three procollagens (Tacol5a1, Tacol5a2, and Tacol5a3) in type V collagen were cloned from the skin of shortbill spearfish (Tetrapturus angustirostris). The open reading frames (ORFs) of Tacol5a1, Tacol5a2, and Tacol5a3 contained 5991, 4485, and 5607 bps, respectively, encoding 1997, 1495, and 1869 amino acid residues. Each of the deduced amino acid sequences of procollagens contained a signal peptide and a fibrillar collagen C-terminal domain (COLFI). A conserved thrombospondin-like N-terminal domain (TSPN) was found at the N-terminus of Tacol5a1 and 5a3 procollagens, whereas a von Willebrand factor (VWC) was found at the N-terminus of Tacol5a2 procollagen. Tacol5a1, Tacol5a2, and Tacol5a3 had their theoretical isoelectric points of 5.06, 6.75, and 5.76, respectively, and predicted molecular weights of 198,435.60, 145,058.48, and 189,171.18, respectively. The phylogenetic tree analysis revealed that Tacol5a1 of shortbill spearfish clustered with that of yellow perch (Perca flavescens) instead of broadbill swordfish (Xiphias gladius). In addition, type V collagen was extracted from the shortbill spearfish skin. The in silico method demonstrated that shortbill spearfish type V collagen has a high potential for angiotensin-converting enzyme (ACE) inhibition activity (79.50%), dipeptidyl peptidase IV inhibition (74.91%) activity, and antithrombotic activity (46.83%). The structural clarification and possible functional investigation in this study provide the foundation for the applications of exogenous type V collagen derived from fish sources.
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Affiliation(s)
- Qiuyu Han
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo 108-8477, Japan; (Q.H.)
| | - Tomoyuki Koyama
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo 108-8477, Japan; (Q.H.)
| | - Shugo Watabe
- School of Marine Biosciences, Kitasato University, Minami, Sagamihara 252-0373, Kanagawa, Japan
| | - Shoichiro Ishizaki
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo 108-8477, Japan; (Q.H.)
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Barajaa MA, Otsuka T, Ghosh D, Kan HM, Laurencin CT. Development of porcine skeletal muscle extracellular matrix-derived hydrogels with improved properties and low immunogenicity. Proc Natl Acad Sci U S A 2024; 121:e2322822121. [PMID: 38687784 PMCID: PMC11087813 DOI: 10.1073/pnas.2322822121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 03/18/2024] [Indexed: 05/02/2024] Open
Abstract
Hydrogels derived from decellularized extracellular matrices (ECM) of animal origin show immense potential for regenerative applications due to their excellent cytocompatibility and biomimetic properties. Despite these benefits, the impact of decellularization protocols on the properties and immunogenicity of these hydrogels remains relatively unexplored. In this study, porcine skeletal muscle ECM (smECM) underwent decellularization using mechanical disruption (MD) and two commonly employed decellularization detergents, sodium deoxycholate (SDC) or Triton X-100. To mitigate immunogenicity associated with animal-derived ECM, all decellularized tissues were enzymatically treated with α-galactosidase to cleave the primary xenoantigen-the α-Gal antigen. Subsequently, the impact of the different decellularization protocols on the resultant hydrogels was thoroughly investigated. All methods significantly reduced total DNA content in hydrogels. Moreover, α-galactosidase treatment was crucial for cleaving α-Gal antigens, suggesting that conventional decellularization methods alone are insufficient. MD preserved total protein, collagen, sulfated glycosaminoglycan, laminin, fibronectin, and growth factors more efficiently than other protocols. The decellularization method impacted hydrogel gelation kinetics and ultrastructure, as confirmed by turbidimetric and scanning electron microscopy analyses. MD hydrogels demonstrated high cytocompatibility, supporting satellite stem cell recruitment, growth, and differentiation into multinucleated myofibers. In contrast, the SDC and Triton X-100 protocols exhibited cytotoxicity. Comprehensive in vivo immunogenicity assessments in a subcutaneous xenotransplantation model revealed MD hydrogels' biocompatibility and low immunogenicity. These findings highlight the significant influence of the decellularization protocol on hydrogel properties. Our results suggest that combining MD with α-galactosidase treatment is an efficient method for preparing low-immunogenic smECM-derived hydrogels with enhanced properties for skeletal muscle regenerative engineering and clinical applications.
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Affiliation(s)
- Mohammed A. Barajaa
- Department of Biomedical Engineering, College of Engineering, Imam Abdulrahman Bin Faisal University, Dammam34212, Saudi Arabia
| | - Takayoshi Otsuka
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut, Farmington, CT06030
| | - Debolina Ghosh
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut, Farmington, CT06030
| | - Ho-Man Kan
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut, Farmington, CT06030
| | - Cato T. Laurencin
- The Cato T. Laurencin Institute for Regenerative Engineering, University of Connecticut, Farmington, CT06030
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT06269
- Department of Orthopedic Surgery, University of Connecticut Health Center, Farmington, CT06030
- Department of Materials Science & Engineering, University of Connecticut, Storrs, CT06269
- Department of Chemical & Bimolecular Engineering, University of Connecticut, Storrs, CT06269
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Yılmaz B, Kose O, Karahan N, Tumentemur G, Ertan MB, Ozdemir G, Sirin E. Effect of cilostazol on healing of achilles tendon ruptures: an experimental study on rats. Connect Tissue Res 2024; 65:226-236. [PMID: 38722149 DOI: 10.1080/03008207.2024.2349817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 04/25/2024] [Indexed: 05/31/2024]
Abstract
PURPOSE This study aimed to evaluate whether cilostazol (phosphodiesterase III inhibitor) could enhance the healing of Achilles tendon ruptures in rats. MATERIALS AND METHODS The Achilles tendons of 24 healthy male adult rats were incised and repaired. The rats were randomly allocated to cilostazol and control groups. The cilostazol group received daily intragastric administration of 50 mg/kg cilostazol for 28 days, while the control group did not receive any medication. The rats were sacrificed on the 30th day, and the Achilles tendon was evaluated for biomechanical properties, histopathological characteristics, and immunohistochemical analysis. RESULTS All rats completed the experiment. The Movin sum score of the control group was significantly higher (p = 0.008) than that of the cilostazol group, with means of 11 ± 0.63 and 7.50 ± 1.15, respectively. Similarly, the mean Bonar score was significantly higher (p = 0.026) in the control group compared to the cilostazol group (8.33 ± 1.50 vs. 5.5 ± 0.54, respectively). Moreover, the Type I/Type III Collagen ratio was notably higher (p = 0.016) in the cilostazol group (52.2 ± 8.4) than in the control group (34.6 ± 10.2). The load to failure was substantially higher in the cilostazol group than in the control group (p = 0.034), suggesting that the tendons in the cilostazol group were stronger and exhibited greater resistance to failure. CONCLUSIONS The results of this study suggest that cilostazol treatment significantly improves the biomechanical and histopathological parameters of the healing Achilles tendon in rats. Cilostazol might be a valuable supplementary therapy in treating Achilles tendon ruptures in humans. Additional clinical studies are, however, required to verify these outcomes.
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Affiliation(s)
- Baris Yılmaz
- Fatih Sultan Mehmet Training & Research Hospital, Department of Orthopedics and Traumatology, University of Health Sciences, Istanbul, Turkey
| | - Ozkan Kose
- Antalya Training & Research Hospital, Department of Orthopedics and Traumatology, University of Health Sciences, Antalya, Turkey
| | - Nazım Karahan
- Fatih Sultan Mehmet Training & Research Hospital, Department of Orthopedics and Traumatology, University of Health Sciences, Istanbul, Turkey
| | - Gamze Tumentemur
- Vocational School of Health Services, Department of Pedology, Acibadem University, Istanbul, Turkey
| | - Mehmet Barıs Ertan
- Antalya Training & Research Hospital, Department of Orthopedics and Traumatology, University of Health Sciences, Antalya, Turkey
| | - Guzelali Ozdemir
- Ankara Bilkent City Hospital, Department of Orthopedics and Traumatology, University of Health Sciences, Ankara, Turkey
| | - Evrim Sirin
- Medical Faculty, Department of Orthopedics and Traumatology, Marmara University, Istanbul, Turkey
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Huber S, Santschi MXT, Schadow J, Leunig M, Ferguson SJ. Structure, composition and anisotropic swelling of the bovine acetabular labrum. J Mech Behav Biomed Mater 2024; 150:106333. [PMID: 38134586 DOI: 10.1016/j.jmbbm.2023.106333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023]
Abstract
The fibro-cartilaginous labrum surrounds the acetabular rim and is important for hip joint stability and sealing. Sealing may be enhanced by swelling pressure within the normal labrum. Swelling of the degenerated or torn labrum might occur and potentially contribute to the development of osteoarthritis, through altered load transmission. This study aimed to characterize the three-dimensional swelling behaviour, the collagen fiber orientation and spatial proteoglycan distribution of the bovine acetabular labrum. Specimens were harvested from bovine donors (192-652 days, male, n = 6 donors). Structure was analyzed by scanning electron microscopy, histology, and dimethylmethylene blue assay. Specimen dimensions were measured before and after incubation in phosphate buffered saline to assess the swelling. Results showed that the articulating surface is composed of a collagen mesh network. Collagen fiber bundles showed a low degree of alignment close to the surface and were circumferentially aligned in the deep tissue. Proteoglycans were identified clustered between the collagen bundles. Glycosaminoglycan content was 10 x lower than that of cartilage (23.1 ± 6.4 compared to 299.5 ± 19.1 μg/mg dry weight) with minor regional differences. Specimens swelled significantly more in the orthogonal direction (swelling ratio 124.7 ± 10.2%) compared to the swelling parallel to the articulating surface (108.8 ± 6.1% and 102.8 ± 4.1%). In the deep tissue, swelling was also restricted in the main collagen fiber bundle direction (circumferentially), with a swelling ratio of 109.5 ± 4.0% in the main fiber bundle direction compared to 126.8 ± 7.3 % and 122.3 ± 5.8% radially. The findings demonstrate that the labrum shows anisotropic swelling properties, which reflect the anisotropy in the tissue structure and inter-fiber localisation of proteoglycans.
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Affiliation(s)
- Stephanie Huber
- ETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
| | | | - Jemima Schadow
- ETH Zurich, Institute for Biomechanics, Zurich, Switzerland.
| | - Michael Leunig
- Schulthess Klinik, Department of Hip Surgery, Zurich, Switzerland.
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Szász C, Pap D, Szebeni B, Bokrossy P, Őrfi L, Szabó AJ, Vannay Á, Veres-Székely A. Optimization of Sirius Red-Based Microplate Assay to Investigate Collagen Production In Vitro. Int J Mol Sci 2023; 24:17435. [PMID: 38139263 PMCID: PMC10744033 DOI: 10.3390/ijms242417435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/04/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Tissue fibrosis is characterized by chronic fibroblast activation and consequently excessive accumulation of collagen-rich extracellular matrix. In vitro microplate-based assays are essential to investigate the underlying mechanism and the effect of antifibrotic drugs. In this study, in the absence of a gold-standard method, we optimized a simple, cost-effective, Sirius Red-based colorimetric measurement to determine the collagen production of fibroblasts grown on 96-well tissue culture plates. Based on our findings, the use of a serum-free medium is recommended to avoid aspecific signals, while ascorbate supplementation increases the collagen production of fibroblasts. The cell-associated collagens can be quantified by Sirius Red staining in acidic conditions followed by alkaline elution. Immature collagens can be precipitated from the culture medium by acidic Sirius Red solution, and after subsequent centrifugation and washing steps, their amount can be also measured. Increased attention has been paid to optimizing the assay procedure, including incubation time, temperature, and solution concentrations. The resulting assay shows high linearity and sensitivity and could serve as a useful tool in fibrosis-related basic research as well as in preclinical drug screening.
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Affiliation(s)
- Csenge Szász
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, Hungary
| | - Domonkos Pap
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, Hungary
- HUN-REN-SU Pediatrics and Nephrology Research Group, 1052 Budapest, Hungary
| | - Beáta Szebeni
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, Hungary
- HUN-REN-SU Pediatrics and Nephrology Research Group, 1052 Budapest, Hungary
| | - Péter Bokrossy
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, Hungary
| | - László Őrfi
- Department of Pharmaceutical Chemistry, Semmelweis University, 1092 Budapest, Hungary
- Vichem Chemie Research Ltd., 1022 Budapest, Hungary
| | - Attila J. Szabó
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, Hungary
- HUN-REN-SU Pediatrics and Nephrology Research Group, 1052 Budapest, Hungary
| | - Ádám Vannay
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, Hungary
- HUN-REN-SU Pediatrics and Nephrology Research Group, 1052 Budapest, Hungary
| | - Apor Veres-Székely
- Pediatric Center, MTA Center of Excellence, Semmelweis University, 1083 Budapest, Hungary
- HUN-REN-SU Pediatrics and Nephrology Research Group, 1052 Budapest, Hungary
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Sheikh E, Agrawal K, Roy S, Burk D, Donnarumma F, Ko YH, Guttula PK, Biswal NC, Shukla HD, Gartia MR. Multimodal Imaging of Pancreatic Cancer Microenvironment in Response to an Antiglycolytic Drug. Adv Healthc Mater 2023; 12:e2301815. [PMID: 37706285 PMCID: PMC10842640 DOI: 10.1002/adhm.202301815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Indexed: 09/15/2023]
Abstract
Lipid metabolism and glycolysis play crucial roles in the progression and metastasis of cancer, and the use of 3-bromopyruvate (3-BP) as an antiglycolytic agent has shown promise in killing pancreatic cancer cells. However, developing an effective strategy to avoid chemoresistance requires the ability to probe the interaction of cancer drugs with complex tumor-associated microenvironments (TAMs). Unfortunately, no robust and multiplexed molecular imaging technology is currently available to analyze TAMs. In this study, the simultaneous profiling of three protein biomarkers using SERS nanotags and antibody-functionalized nanoparticles in a syngeneic mouse model of pancreatic cancer (PC) is demonstrated. This allows for comprehensive information about biomarkers and TAM alterations before and after treatment. These multimodal imaging techniques include surface-enhanced Raman spectroscopy (SERS), immunohistochemistry (IHC), polarized light microscopy, second harmonic generation (SHG) microscopy, fluorescence lifetime imaging microscopy (FLIM), and untargeted liquid chromatography and mass spectrometry (LC-MS) analysis. The study reveals the efficacy of 3-BP in treating pancreatic cancer and identifies drug treatment-induced lipid species remodeling and associated pathways through bioinformatics analysis.
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Affiliation(s)
- Elnaz Sheikh
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Kirti Agrawal
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Sanjit Roy
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - David Burk
- Department of Cell Biology and Bioimaging, Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Fabrizio Donnarumma
- Department of Chemistry, Louisiana State University, Baton Rouge, LA, 70803, USA
| | - Young H Ko
- NewG Lab Pharma, 701 East Pratt Street, Columbus Center, Baltimore, MD, 21202, USA
| | - Praveen Kumar Guttula
- Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, ON, K1H 8L6, Canada
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, K1H 8M5, Canada
| | - Nrusingh C Biswal
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Hem D Shukla
- Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Manas Ranjan Gartia
- Department of Mechanical and Industrial Engineering, Louisiana State University, Baton Rouge, LA, 70803, USA
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Ahmed Omar N, Roque J, Galvez P, Siadous R, Chassande O, Catros S, Amédée J, Roques S, Durand M, Bergeaut C, Bidault L, Aprile P, Letourneur D, Fricain JC, Fenelon M. Development of Novel Polysaccharide Membranes for Guided Bone Regeneration: In Vitro and In Vivo Evaluations. Bioengineering (Basel) 2023; 10:1257. [PMID: 38002381 PMCID: PMC10669683 DOI: 10.3390/bioengineering10111257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/16/2023] [Accepted: 10/20/2023] [Indexed: 11/26/2023] Open
Abstract
INTRODUCTION Guided bone regeneration (GBR) procedures require selecting suitable membranes for oral surgery. Pullulan and/or dextran-based polysaccharide materials have shown encouraging results in bone regeneration as bone substitutes but have not been used to produce barrier membranes. The present study aimed to develop and characterize pullulan/dextran-derived membranes for GBR. MATERIALS AND METHODS Two pullulan/dextran-based membranes, containing or not hydroxyapatite (HA) particles, were developed. In vitro, cytotoxicity evaluation was performed using human bone marrow mesenchymal stem cells (hBMSCs). Biocompatibility was assessed on rats in a subcutaneous model for up to 16 weeks. In vivo, rat femoral defects were created on 36 rats to compare the two pullulan/dextran-based membranes with a commercial collagen membrane (Bio-Gide®). Bone repair was assessed radiologically and histologically. RESULTS Both polysaccharide membranes demonstrated cytocompatibility and biocompatibility. Micro-computed tomography (micro-CT) analyses at two weeks revealed that the HA-containing membrane promoted a significant increase in bone formation compared to Bio-Gide®. At one month, similar effects were observed among the three membranes in terms of bone regeneration. CONCLUSION The developed pullulan/dextran-based membranes evidenced biocompatibility without interfering with bone regeneration and maturation. The HA-containing membrane, which facilitated early bone regeneration and offered adequate mechanical support, showed promising potential for GBR procedures.
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Affiliation(s)
- Naïma Ahmed Omar
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
| | - Jéssica Roque
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
| | - Paul Galvez
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
| | - Robin Siadous
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
| | - Olivier Chassande
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
| | - Sylvain Catros
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
- Department of Oral Surgery, University Hospital of Bordeaux, F-33076 Bordeaux, France
| | - Joëlle Amédée
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
| | - Samantha Roques
- Centre d’Investigation Clinique de Bordeaux (CIC 1401), University Hospital of Bordeaux, INSERM, F-33000 Bordeaux, France (M.D.)
| | - Marlène Durand
- Centre d’Investigation Clinique de Bordeaux (CIC 1401), University Hospital of Bordeaux, INSERM, F-33000 Bordeaux, France (M.D.)
| | - Céline Bergeaut
- Siltiss, SA, Zac de la Nau, 19240 Saint-Viance, France; (C.B.); (L.B.)
| | - Laurent Bidault
- Siltiss, SA, Zac de la Nau, 19240 Saint-Viance, France; (C.B.); (L.B.)
| | - Paola Aprile
- Laboratory for Vascular Translational Science (LVTS), X Bichat Hospital, University Paris Cité & University Sorbonne Paris Nord, INSERM 1148, F-75018 Paris, France
| | - Didier Letourneur
- Siltiss, SA, Zac de la Nau, 19240 Saint-Viance, France; (C.B.); (L.B.)
- Laboratory for Vascular Translational Science (LVTS), X Bichat Hospital, University Paris Cité & University Sorbonne Paris Nord, INSERM 1148, F-75018 Paris, France
| | - Jean-Christophe Fricain
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
- Department of Oral Surgery, University Hospital of Bordeaux, F-33076 Bordeaux, France
- Centre d’Investigation Clinique de Bordeaux (CIC 1401), University Hospital of Bordeaux, INSERM, F-33000 Bordeaux, France (M.D.)
| | - Mathilde Fenelon
- Laboratory for Tissue Bioengineering, University of Bordeaux, INSERM 1026, F-33076 Bordeaux, France; (N.A.O.); (O.C.); (M.F.)
- Department of Oral Surgery, University Hospital of Bordeaux, F-33076 Bordeaux, France
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9
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Evans D, Barcons AM, Basit RH, Adams C, Chari DM. Evaluating the Feasibility of Hydrogel-Based Neural Cell Sprays. J Funct Biomater 2023; 14:527. [PMID: 37888192 PMCID: PMC10607175 DOI: 10.3390/jfb14100527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/05/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023] Open
Abstract
Neurological injuries have poor prognoses with serious clinical sequelae. Stem cell transplantation enhances neural repair but is hampered by low graft survival (ca. 80%) and marker expression/proliferative potential of hydrogel-sprayed astrocytes was retained. Combining a cell spray format with polymer encapsulation technologies could form the basis of a non-invasive graft delivery method, offering potential advantages over current cell delivery approaches.
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Affiliation(s)
- Daisy Evans
- Keele University School of Medicine, Keele University, Staffordshire ST5 5BG, UK;
| | - Aina Mogas Barcons
- Department of Physiology, Anatomy and Genetics, Oxford Parkinson’s Disease Centre, University of Oxford, Oxford OX1 3AZ, UK;
| | - Raja Haseeb Basit
- Department of General Surgery, Queen Elizabeth Hospital, Birmingham B15 2GW, UK;
| | - Christopher Adams
- Neural Tissue Engineering, School of Life Sciences, Keele University, Staffordshire ST5 5BG, UK;
| | - Divya Maitreyi Chari
- Neural Tissue Engineering, School of Life Sciences, Keele University, Staffordshire ST5 5BG, UK;
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10
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Bielajew BJ, Nordberg RC, Hu JC, Athanasiou KA, Eleswarapu SV. Tissue anisotropy and collagenomics in porcine penile tunica albuginea: Implications for penile structure-function relationships and tissue engineering. Acta Biomater 2023; 169:130-137. [PMID: 37579910 DOI: 10.1016/j.actbio.2023.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 08/02/2023] [Accepted: 08/09/2023] [Indexed: 08/16/2023]
Abstract
The tunica albuginea (TA) of the penis is an elastic layer that serves a structural role in penile erection. Disorders affecting the TA cause pain, deformity, and erectile dysfunction. There is a substantial clinical need for engineered replacements of TA, but data are scarce on the material properties and biochemical composition of healthy TA. The objective of this study was to assess tissue organization, protein content, and mechanical properties of porcine TA to establish structure-function relationships and design criteria for tissue engineering efforts. TA was isolated from six pigs and subjected to histomorphometry, quantification of collagen content and pyridinoline crosslinks, bottom-up proteomics, and tensile mechanical testing. Collagen was 20 ± 2%/wet weight (WW) and 53 ± 4%/dry weight (DW). Pyridinoline content was 426 ±131 ng/mg WW, 1011 ± 190 ng/mg DW, and 45 ± 8 mmol/mol hydroxyproline. Bottom-up proteomics identified 14 proteins with an abundance of >0.1% of total protein. The most abundant collagen subtype was type I, representing 95.5 ± 1.5% of the total protein in the samples. Collagen types III, XII, and VI were quantified at 1.7 ± 1.0%, 0.8 ± 0.2%, and 0.4 ± 0.2%, respectively. Tensile testing revealed anisotropy: Young's modulus was significantly higher longitudinally than circumferentially (60 ± 18 MPa vs. 8 ± 5 MPa, p < 0.01), as was ultimate tensile strength (16 ± 4 MPa vs. 3 ± 3 MPa, p < 0.01). Taken together, the tissue mechanical and compositional data obtained in this study provide important benchmarks for the development of TA biomaterials. STATEMENT OF SIGNIFICANCE: The tunica albuginea of the penis serves an important structural role in physiologic penile erection. This tissue can become damaged by disease or trauma, leading to pain and deformity. Treatment options are limited. Little is known about the precise biochemical composition and biomechanical properties of healthy tunica albuginea. In this study, we characterize the tissue using proteomic analysis and tensile testing to establish design parameters for future tissue engineering efforts. To our knowledge, this is the first study to quantify tissue anisotropy and to use bottom-up proteomics to characterize the composition of penile tunica albuginea.
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Affiliation(s)
- Benjamin J Bielajew
- Department of Biomedical Engineering, University of California Irvine, Irvine, CA, USA
| | - Rachel C Nordberg
- Department of Biomedical Engineering, University of California Irvine, Irvine, CA, USA
| | - Jerry C Hu
- Department of Biomedical Engineering, University of California Irvine, Irvine, CA, USA
| | - Kyriacos A Athanasiou
- Department of Biomedical Engineering, University of California Irvine, Irvine, CA, USA
| | - Sriram V Eleswarapu
- Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA.
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11
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Modina SC, Aidos L, Millar VRH, Pallaoro M, Polito U, Veronesi MC, Peretti GM, Mangiavini L, Carnevale L, Boschetti F, Abbate F, Di Giancamillo A. Postnatal morpho-functional development of a dog's meniscus. Ann Anat 2023; 250:152141. [PMID: 37499701 DOI: 10.1016/j.aanat.2023.152141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 07/29/2023]
Abstract
This study evaluates the morpho-functional modifications that characterize meniscal development from neonatal to adult dogs. Even if menisci are recognized as essential structures for the knee joint, poor information is available about their morphogenesis, in particular in dog models. Menisci from a group of Dobermann Pinchers aged 0, 10, 30 days, and 4 years (T0, T10, T30, adult, respectively) were analyzed by SEM, histochemistry (Safranin O and Picro Sirius Red Staining analyzed under a polarized light microscope), immunofluorescences (collagen type I and II), biomechanical (compression) and biochemical analyses (glycosaminoglycans, GAGs, and DNA content). SEM analyses revealed that the T0 meniscus is a bulgy structure that during growth tends to flatten, firstly in the inner zone (T10) and then even in the outer zone (T30), until the achievement of the completely smooth adult final shape. These results were further supported by the histochemistry analyses in which the deposition of GAGs started from T30, and the presence of type I birefringent collagen fibers was observed from T0 to T30, while poorly refringent type III collagen fibers were observed in the adult dogs. Double immunofluorescence analyses also evidenced that the neonatal meniscus contains mainly type I collagen fibers, as well as the T10 meniscus, and demonstrated a more evident regionalization and crimping in the T30 and adult meniscus. Young's elastic modulus of the meniscus in T0 and T10 animals was lower than the T30 animals, and this last group was also lower than adult ones (T0-T10 vs T30 vs adult). Biochemical analysis confirmed that cellularity decreases over time from neonatal to adult (p < 0.01). The same decreasing trend was observed in GAGs deposition. These results may suggest that the postnatal development of canine meniscus may be related to the progressive functional locomotory development: after birth, the meniscus acquires its functionality over time, through movement, load, and growth itself.
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Affiliation(s)
- Silvia Clotilde Modina
- Department of Veterinary Medicine and Animal Science, University of Milan, Via dell'Università, 6, 26900 Lodi, Italy
| | - Lucia Aidos
- Department of Veterinary Medicine and Animal Science, University of Milan, Via dell'Università, 6, 26900 Lodi, Italy
| | | | - Margherita Pallaoro
- Department of Veterinary Medicine and Animal Science, University of Milan, Via dell'Università, 6, 26900 Lodi, Italy
| | - Umberto Polito
- Department of Veterinary Medicine and Animal Science, University of Milan, Via dell'Università, 6, 26900 Lodi, Italy
| | - Maria Cristina Veronesi
- Department of Veterinary Medicine and Animal Science, University of Milan, Via dell'Università, 6, 26900 Lodi, Italy
| | - Giuseppe Maria Peretti
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli, 31, 20133 Milan, Italy; IRCCS, Ospedale Galeazzi - Sant'Ambrogio, Via Cristina Belgioioso 173, 20157, Milan, Italy
| | - Laura Mangiavini
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli, 31, 20133 Milan, Italy; IRCCS, Ospedale Galeazzi - Sant'Ambrogio, Via Cristina Belgioioso 173, 20157, Milan, Italy
| | - Liliana Carnevale
- Department of Veterinary Medicine and Animal Science, University of Milan, Via dell'Università, 6, 26900 Lodi, Italy
| | - Federica Boschetti
- IRCCS, Ospedale Galeazzi - Sant'Ambrogio, Via Cristina Belgioioso 173, 20157, Milan, Italy; Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Polytechnic University of Milan, 20133 Milan, Italy
| | - Francesco Abbate
- Department of Veterinary Sciences, University of Messina, Polo Universitario S.S. Annunziata, 98168 Messina, Italy
| | - Alessia Di Giancamillo
- Department of Biomedical Sciences for Health, University of Milan, Via Mangiagalli, 31, 20133 Milan, Italy.
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12
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Ghannam SF, Rutland CS, Allegrucci C, Mongan NP, Rakha E. Encapsulated papillary carcinoma of the breast: does it have a native basement membrane? Histopathology 2023; 83:376-393. [PMID: 37232543 DOI: 10.1111/his.14939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/08/2023] [Accepted: 05/01/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Encapsulated papillary carcinoma (EPC) is surrounded by a thick fibrous capsule-like structure, which is interpreted as a thickened basement membrane (BM). This study aimed to describe the geometric characteristics of the EPC capsule and to refine whether it is an expansion of the BM or a stromal reactive process. MATERIAL AND METHODS In all, 100 cases were divided into four groups: EPC, ductal carcinoma in situ (DCIS), normal breast tissue and invasive tumours, with an additional encapsulated papillary thyroid carcinoma (EPTC) control group. Representative slides from each case were stained with picrosirius red (PSR) stain and examined using polarised microscopy. Images were analysed using ImageJ, CT-FIRE, and Curve align image analysis programmes. RESULTS Compared to the normal and DCIS BM, the EPC group showed a significant increase of collagen fibre width, straightness, and density, and a decrease of fibre length. The EPC capsule showed less alignment of fibres with a more perpendicular arrangement, and it was enriched with disorganised collagen type I (stromal collagen) fibres. Compared to other groups, the EPC capsule showed significant variation in the thickness, evenness, distribution of collagen fibres, and significant intracapsular heterogeneity. Compared to BM-like material in the invasive group, the EPC capsule showed a higher density of collagen fibres with longer, straighter, and more aligned fibres, but there was no difference in the distribution of both collagen types I and III. Conversely, compared to EPTC, there were no differences between both EPC and EPTC capsules except that the fibres in the EPC capsule were straighter. Although differences between normal ducts and lobules and DCIS BM collagen fibre density, straightness, orientation, and alignment were detected, both were significantly different from EPC capsule. CONCLUSION This study provided evidence that the EPC capsule is a reactive process rather than a thickened native BM characteristic of normal and in situ lesions, which provides further evidence that EPC is an indolent invasive carcinoma based on capsule characteristics.
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Affiliation(s)
- Suzan F Ghannam
- Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, UK
- Department of Histology and Cell Biology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, University of Nottingham, Nottingham, UK
| | - Catrin S Rutland
- School of Veterinary Medicine and Sciences, University of Nottingham, Nottingham, UK
| | - Cinzia Allegrucci
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, University of Nottingham, Nottingham, UK
- School of Veterinary Medicine and Sciences, University of Nottingham, Nottingham, UK
| | - Nigel P Mongan
- School of Veterinary Medicine and Sciences, University of Nottingham, Nottingham, UK
- Department of Pharmacology, Weill Cornell Medicine, New York, NY, USA
| | - Emad Rakha
- Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, UK
- Nottingham Breast Cancer Research Centre, Biodiscovery Institute, University of Nottingham, Nottingham, UK
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13
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Lu CE, Levey RE, Ghersi G, Schueller N, Liebscher S, Layland SL, Schenke-Layland K, Duffy GP, Marzi J. Monitoring the macrophage response towards biomaterial implants using label-free imaging. Mater Today Bio 2023; 21:100696. [PMID: 37361552 PMCID: PMC10285553 DOI: 10.1016/j.mtbio.2023.100696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 05/29/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
Understanding the immune system's foreign body response (FBR) is essential when developing and validating a biomaterial. Macrophage activation and proliferation are critical events in FBR that can determine the material's biocompatibility and fate in vivo. In this study, two different macro-encapsulation pouches intended for pancreatic islet transplantation were implanted into streptozotocin-induced diabetes rat models for 15 days. Post-explantation, the fibrotic capsules were analyzed by standard immunohistochemistry as well as non-invasive Raman microspectroscopy to determine the degree of FBR induced by both materials. The potential of Raman microspectroscopy to discern different processes of FBR was investigated and it was shown that Raman microspectroscopy is capable of targeting ECM components of the fibrotic capsule as well as pro and anti-inflammatory macrophage activation states, in a molecular-sensitive and marker-independent manner. In combination with multivariate analysis, spectral shifts reflecting conformational differences in Col I were identified and allowed to discriminate fibrotic and native interstitial connective tissue fibers. Moreover, spectral signatures retrieved from nuclei demonstrated changes in methylation states of nucleic acids in M1 and M2 phenotypes, relevant as indicator for fibrosis progression. This study could successfully implement Raman microspectroscopy as complementary tool to study in vivo immune-compatibility providing insightful information of FBR of biomaterials and medical devices, post-implantation.
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Affiliation(s)
- Chuan-en Lu
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Ruth E. Levey
- Anatomy and Regenerative Medicine Institute (REMEDI), School of Medicine, University of Galway, Ireland
| | - Giulio Ghersi
- ABIEL Srl, C/o ARCA Incubatore di Imprese, Palermo, Italy
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Italy
| | - Nathan Schueller
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Simone Liebscher
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Shannon L. Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Katja Schenke-Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Cluster of Excellence IFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Garry P. Duffy
- Anatomy and Regenerative Medicine Institute (REMEDI), School of Medicine, University of Galway, Ireland
- Science Foundation Ireland Centre for Research in Medical Devices (CÚRAM), University of Galway, Ireland
| | - Julia Marzi
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, Tübingen, Germany
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Reutlingen, Germany
- Cluster of Excellence IFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, Eberhard Karls University Tübingen, Tübingen, Germany
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14
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Almeida GHDR, da Silva-Júnior LN, Gibin MS, Dos Santos H, de Oliveira Horvath-Pereira B, Pinho LBM, Baesso ML, Sato F, Hernandes L, Long CR, Relly L, Miglino MA, Carreira ACO. Perfusion and Ultrasonication Produce a Decellularized Porcine Whole-Ovary Scaffold with a Preserved Microarchitecture. Cells 2023; 12:1864. [PMID: 37508528 PMCID: PMC10378497 DOI: 10.3390/cells12141864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 07/30/2023] Open
Abstract
The application of decellularized scaffolds for artificial tissue reconstruction has been an approach with great therapeutic potential in regenerative medicine. Recently, biomimetic ovarian tissue reconstruction was proposed to reestablish ovarian endocrine functions. Despite many decellularization methods proposed, there is no established protocol for whole ovaries by detergent perfusion that is able to preserve tissue macro and microstructure with higher efficiency. This generated biomaterial may have the potential to be applied for other purposes beyond reproduction and be translated to other areas in the tissue engineering field. Therefore, this study aimed to establish and standardize a protocol for porcine ovaries' decellularization based on detergent perfusion and ultrasonication to obtain functional whole-ovary scaffolds. For that, porcine ovaries (n = 5) were perfused with detergents (0.5% SDS and 1% Triton X-100) and submitted to an ultrasonication bath to produce acellular scaffolds. The decellularization efficiency was evaluated by DAPI staining and total genomic DNA quantification. ECM morphological evaluation was performed by histological, immunohistochemistry, and ultrastructural analyses. ECM physico-chemical composition was evaluated using FTIR and Raman spectroscopy. A cytocompatibility and cell adhesion assay using murine fibroblasts was performed. Results showed that the proposed method was able to remove cellular components efficiently. There was no significant ECM component loss in relation to native tissue, and the scaffolds were cytocompatible and allowed cell attachment. In conclusion, the proposed decellularization protocol produced whole-ovaries scaffolds with preserved ECM composition and great potential for application in tissue engineering.
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Affiliation(s)
| | | | | | - Henrique Dos Santos
- Department of Physics, State University of Maringá, Maringá 87020-900, Brazil
| | | | - Leticia Beatriz Mazo Pinho
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
| | | | - Francielle Sato
- Department of Physics, State University of Maringá, Maringá 87020-900, Brazil
| | - Luzmarina Hernandes
- Department of Morphological Sciences, State University of Maringa, Maringá 87020-900, Brazil
| | - Charles R Long
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Luciana Relly
- Department of Veterinary Physiology and Pharmacology, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Maria Angelica Miglino
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
| | - Ana Claudia Oliveira Carreira
- Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo 05508-270, Brazil
- Centre for Natural and Human Sciences, Federal University of ABC, Santo André, São Paulo 09210-580, Brazil
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15
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da Cruz IBM, de Afonso Bonotto NC, Turra BO, Teixeira CF, Azzolin VF, Ribeiro EAM, Piccoli JDCE, Barbisan F. Rotenone-exposure as cytofunctional aging model of human dermal fibroblast prior replicative senescence. Toxicol In Vitro 2023:105637. [PMID: 37394047 DOI: 10.1016/j.tiv.2023.105637] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023]
Abstract
Rotenone (Ro), causes superoxide imbalance by inhibiting complex I of the mitochondrial electron transport chain, being able to serve as a model for functional skin aging by inducing cytofunctional changes in dermal fibroblasts prior to proliferative senescence. To test this hypothesis, we conducted an initial protocol to select a concentration of Ro (0.5, 1, 1.5, 2, 2.5, and 3 μM) that would induce the highest levels of the aging marker beta-galactosidase (β-gal) in human dermal HFF-1 fibroblasts after 72 h of culture, as well as a moderate increase in apoptosis and partial G1 arrestment. We evaluated whether the selected concentration (1 μM) differentially modulated oxidative and cytofunctional markers of fibroblasts. Ro 1.0 μM increased β-gal levels and apoptosis frequency, decreased the frequency of S/G2 cells, induced higher levels of oxidative markers, and presented a genotoxic effect. Fibroblasts exposed to Ro showed lower mitochondrial activity, extracellular collagen deposition, and fewer fibroblast cytoplasmic connections than controls. Ro triggered overexpression of the gene associated with aging (MMP-1), downregulation genes of collagen production (COL1A, FGF-2), and cellular growth/regeneration (FGF-7). The 1 μM concentration of Ro could serve as an experimental model for functional aging fibroblasts prior to replicative senescence. It could be used to identify causal aging mechanisms and strategies to delay skin aging events.
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Affiliation(s)
- Ivana Beatrice Mânica da Cruz
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | - Nathália Cardoso de Afonso Bonotto
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Bárbara Osmarin Turra
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | - Cibele Ferreira Teixeira
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Verônica Farina Azzolin
- Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | - Ednea Aguiar Maia Ribeiro
- Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil
| | | | - Fernanda Barbisan
- Postgraduate Program of Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Postgraduate Program of em Gerontology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Santa Maria, RS, Brazil d Open University of the Third Age, State University of Amazonas, Manaus, AM, Brazil.
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16
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Becker L, Lu CE, Montes-Mojarro IA, Layland SL, Khalil S, Nsair A, Duffy GP, Fend F, Marzi J, Schenke-Layland K. Raman microspectroscopy identifies fibrotic tissues in collagen-related disorders via deconvoluted collagen type I spectra. Acta Biomater 2023; 162:278-291. [PMID: 36931422 DOI: 10.1016/j.actbio.2023.03.016] [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: 11/23/2022] [Revised: 02/28/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023]
Abstract
Fibrosis is a consequence of the pathological remodeling of extracellular matrix (ECM) structures in the connective tissue of an organ. It is often caused by chronic inflammation, which over time, progressively leads to an excess deposition of collagen type I (COL I) that replaces healthy tissue structures, in many cases leaving a stiff scar. Increasing fibrosis can lead to organ failure and death; therefore, developing methods that potentially allow real-time monitoring of early onset or progression of fibrosis are highly valuable. In this study, the ECM structures of diseased and healthy human tissue from multiple organs were investigated for the presence of fibrosis using routine histology and marker-independent Raman microspectroscopy and Raman imaging. Spectral deconvolution of COL I Raman spectra allowed the discrimination of fibrotic and non-fibrotic COL I fibers. Statistically significant differences were identified in the amide I region of the spectral subpeak at 1608 cm-1, which was deemed to be representative for structural changes in COL I fibers in all examined fibrotic tissues. Raman spectroscopy-based methods in combination with this newly discovered spectroscopic biomarker potentially offer a diagnostic approach to non-invasively track and monitor the progression of fibrosis. STATEMENT OF SIGNIFICANCE: Current diagnosis of fibrosis still relies on histopathological examination with invasive biopsy procedures. Although, several non-invasive imaging techniques such as positron emission tomography, single-photon emission computed tomography and second harmonic generation are gradually employed in preclinical or clinical studies, these techniques are limited in spatial resolution and the morphological interpretation highly relies on individual experience and knowledge. In this study, we propose a non-destructive technique, Raman microspectroscopy, to discriminate fibrotic changes of collagen type I based on a molecular biomarker. The changes of the secondary structure of collagen type I can be identified by spectral deconvolution, which potentially can provide an automatic diagnosis for fibrotic tissues in the clinical applicaion.
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Affiliation(s)
- Lucas Becker
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany; Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University, Tübingen, Germany
| | - Chuan-En Lu
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany
| | | | - Shannon L Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany
| | - Suzan Khalil
- Department of Medicine/Cardiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at UCLA, 675 Charles E. Young Drive South, MRL 3645 Los Angeles, CA, USA
| | - Ali Nsair
- Department of Medicine/Cardiology, Cardiovascular Research Laboratories, David Geffen School of Medicine at UCLA, 675 Charles E. Young Drive South, MRL 3645 Los Angeles, CA, USA
| | - Garry P Duffy
- Anatomy & Regenerative Medicine Institute, School of Medicine, College of Medicine, Nursing and Health Sciences, National University of Ireland Galway, H91 TK33, Galway, Ireland
| | - Falko Fend
- Institute of Pathology and Neuropathology, University Hospital Tübingen, Tübingen, Germany
| | - Julia Marzi
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany; Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University, Tübingen, Germany; NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany
| | - Katja Schenke-Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Silcherstr. 7/1, Eberhard Karls University, 72076 Tübingen, Germany; Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies", Eberhard Karls University, Tübingen, Germany; NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, 72770 Reutlingen, Germany.
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17
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Lopez SG, Kim J, Estroff LA, Bonassar LJ. Removal of GAGs Regulates Mechanical Properties, Collagen Fiber Formation, and Alignment in Tissue Engineered Meniscus. ACS Biomater Sci Eng 2023; 9:1608-1619. [PMID: 36802372 DOI: 10.1021/acsbiomaterials.3c00136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The complex fibrillar architecture of native meniscus is essential for proper function and difficult to recapitulate in vitro. In the native meniscus, proteoglycan content is low during the development of collagen fibers and progressively increases with aging. In vitro, fibrochondrocytes produce glycosaminoglycans (GAGs) early in culture, in contrast to native tissue, where they are deposited after collagen fibers have formed. This difference in the timing of GAG production hinders the formation of a mature fiber network in such in vitro models. In this study, we removed GAGs from collagen gel-based tissue engineered constructs using chondroitinase ABC (cABC) and evaluated the effect on the formation and alignment of collagen fibers and the subsequent effect on tensile and compressive mechanical properties. Removal of GAGs during maturation of in vitro constructs improved collagen fiber alignment in tissue engineered meniscus constructs. Additionally, removal of GAGs during maturation improved fiber alignment without compromising compressive strength, and this removal improved not only fiber alignment and formation but also tensile properties. The increased fiber organization in cABC-treated groups also appeared to influence the size, shape, and location of defects in these constructs, suggesting that treatment may prevent the propagation of large defects under loading. This data gives another method of modulating the ECM for improved collagen fiber formation and mechanical properties in tissue engineered constructs.
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Affiliation(s)
- Serafina G Lopez
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Jongkil Kim
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Lara A Estroff
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
- Kavli Institute for Nanoscale Science at Cornell, Cornell University, Ithaca, New York 14853, United States
| | - Lawrence J Bonassar
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853, United States
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18
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Karami P, Stampoultzis T, Guo Y, Pioletti DP. A guide to preclinical evaluation of hydrogel-based devices for treatment of cartilage lesions. Acta Biomater 2023; 158:12-31. [PMID: 36638938 DOI: 10.1016/j.actbio.2023.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/19/2022] [Accepted: 01/05/2023] [Indexed: 01/12/2023]
Abstract
The drive to develop cartilage implants for the treatment of major defects in the musculoskeletal system has resulted in a major research thrust towards developing biomaterial devices for cartilage repair. Investigational devices for the restoration of articular cartilage are considered as significant risk materials by regulatory bodies and therefore proof of efficacy and safety prior to clinical testing represents a critical phase of the multidisciplinary effort to bridge the gap between bench and bedside. To date, review articles have thoroughly covered different scientific facets of cartilage engineering paradigm, but surprisingly, little attention has been given to the preclinical considerations revolving around the validation of a biomaterial implant. Considering hydrogel-based cartilage products as an example, the present review endeavors to provide a summary of the critical prerequisites that such devices should meet for cartilage repair, for successful implantation and subsequent preclinical validation prior to clinical trials. Considerations pertaining to the choice of appropriate animal model, characterization techniques for the quantitative and qualitative outcome measures, as well as concerns with respect to GLP practices are also extensively discussed. This article is not meant to provide a systematic review, but rather to introduce a device validation-based roadmap to the academic investigator, in anticipation of future healthcare commercialization. STATEMENT OF SIGNIFICANCE: There are significant challenges around translation of in vitro cartilage repair strategies to approved therapies. New biomaterial-based devices must undergo exhaustive investigations to ensure their safety and efficacy prior to clinical trials. These considerations are required to be applied from early developmental stages. Although there are numerous research works on cartilage devices and their in vivo evaluations, little attention has been given into the preclinical pathway and the corresponding approval processes. With a focus on hydrogel devices to concretely illustrate the preclinical path, this review paper intends to highlight the various considerations regarding the preclinical validation of hydrogel devices for cartilage repair, from regulatory considerations, to implantation strategies, device performance aspects and characterizations.
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Affiliation(s)
- Peyman Karami
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, School of Engineering, EPFL, Lausanne, Switzerland
| | - Theofanis Stampoultzis
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, School of Engineering, EPFL, Lausanne, Switzerland
| | - Yanheng Guo
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, School of Engineering, EPFL, Lausanne, Switzerland
| | - Dominique P Pioletti
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, School of Engineering, EPFL, Lausanne, Switzerland.
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19
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Yang J, Jiang S, Zhu S, Ren W, Liang H, Li B, Li J. Konjac glucomannan/xanthan gum/sodium alginate composite hydrogel simulates fascial tissue by pre-stretching and moisture regulation. Int J Biol Macromol 2023; 239:124253. [PMID: 37001782 DOI: 10.1016/j.ijbiomac.2023.124253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/10/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023]
Abstract
Improving the mechanical strength and creating an anisotropic structure of edible macromolecular hydrogels is crucial to accurately simulate the texture of connective tissues. In this study, konjac glucomannan (KGM), xanthan gum (XG), and sodium alginate (SA) were used to construct hydrogels, and the effects of different pre-stretching degrees and moisture control on the composite gels were investigated. The results of the mechanical property tests and microstructure tests indicate that pre-stretching and moisture control can significantly enhance the strength of the gels and induce anisotropic structures. In addition, the feasibility of the composite gel structure in simulating brisket fascia was investigated, and it was concluded that 1.5 × -DR samples were most suitable for simulating connective tissue. This study provides compelling evidence for the potential of macromolecular hydrogels in simulating connective tissue and provides theoretical guidance for regulating gel texture.
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20
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The Remodeling of Dermal Collagen Fibrous Structures in Mice under Zero Gravity: The Role of Mast Cells. Int J Mol Sci 2023; 24:ijms24031939. [PMID: 36768262 PMCID: PMC9915916 DOI: 10.3390/ijms24031939] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/10/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
Mechanisms of adaptive rearrangements of the fibrous extracellular matrix of connective tissues under microgravity practically remain unexplored, despite the most essential functions of the stroma existing to ensure the physiological activity of internal organs. Here we analyzed the biomaterial (the skin dermis) of C57BL/6J mice from the Rodent Research-4 experiment after a long stay in space flight. The biomaterial was fixed onboard the International Space Station. It was found that weightlessness resulted in a relative increase in type III collagen-rich fibers compared to other fibrous collagens in the skin. The number of mast cells in the skin did not change, but their secretory activity increased. At the same time, co-localization of mast cells with fibroblasts, as well as impregnated fibers, was reduced. Potential molecular-cellular causes of changes in the activity of fibrillogenesis under zero-gravity conditions and the slowdown of the polymerization of tropocollagen molecules into supramolecular fibrous structures, as well as a relative decrease in the number of fibrous structures with a predominant content of type-I collagen, are discussed. The data obtained evidence of the different sensitivity levels of the fibrous and cellular components of a specific tissue microenvironment of the skin to zero-gravity conditions. The obtained data should be taken into account in the systematic planning of long-term space missions in order to improve the prevention of undesirable effects of weightlessness.
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21
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Staab-Weijnitz CA, Onursal C, Nambiar D, Vanacore R. Assessment of Collagen in Translational Models of Lung Research. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1413:213-244. [PMID: 37195533 DOI: 10.1007/978-3-031-26625-6_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The extracellular matrix (ECM) plays an important role in lung health and disease. Collagen is the main component of the lung ECM, widely used for the establishment of in vitro and organotypic models of lung disease, and as scaffold material of general interest for the field of lung bioengineering. Collagen also is the main readout for fibrotic lung disease, where collagen composition and molecular properties are drastically changed and ultimately result in dysfunctional "scarred" tissue. Because of the central role of collagen in lung disease, quantification, determination of molecular properties, and three-dimensional visualization of collagen is important for both development and characterization of translational models of lung research. In this chapter, we provide a comprehensive overview on the various methodologies currently available for quantification and characterization of collagen including their detection principles, advantages, and disadvantages.
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Affiliation(s)
- Claudia A Staab-Weijnitz
- Institute of Lung Health and Immunity and Comprehensive Pneumology Center with the CPC-M BioArchive, Member of the German Center for Lung Research (DZL), Ludwig-Maximilians-Universität and Helmholtz Zentrum München, Munich, Germany.
| | - Ceylan Onursal
- Institute of Lung Health and Immunity and Comprehensive Pneumology Center with the CPC-M BioArchive, Member of the German Center for Lung Research (DZL), Ludwig-Maximilians-Universität and Helmholtz Zentrum München, Munich, Germany
| | - Deepika Nambiar
- Center for Matrix Biology, Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Roberto Vanacore
- Center for Matrix Biology, Department of Medicine, Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, USA.
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22
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Oda H, Kaizawa Y, Franklin A, Sanchez Rangel U, Storaci H, Min JG, Wang Z, Abrams GD, Chang J, Fox PM. Assessment of a Synergistic Effect of Platelet-Rich Plasma and Stem Cell-Seeded Hydrogel for Healing of Rat Chronic Rotator Cuff Injuries. Cell Transplant 2023; 32:9636897231190174. [PMID: 37592455 PMCID: PMC10467370 DOI: 10.1177/09636897231190174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/29/2023] [Accepted: 07/11/2023] [Indexed: 08/19/2023] Open
Abstract
Outcomes after repair of chronic rotator cuff injuries remain suboptimal. Type-1 collagen-rich tendon hydrogel was previously reported to improve healing in a rat chronic rotator cuff injury model. Stem cell seeding of the tendon hydrogel improved bone quality in the same model. This study aimed to examine whether there was a synergistic and dose-dependent effect of platelet-rich plasma (PRP) on tendon-bone interface healing by combining PRP with stem cell-seeded tendon hydrogel. Human cadaveric tendons were processed into a hydrogel. PRP was prepared at two different platelet concentrations: an initial concentration (initial PRP group) and a higher concentration (concentrated PRP group). Tendon hydrogel was mixed with adipose-derived stem cells and one of the platelet concentrations. Methylcellulose, as opposed to saline, was used as a negative control due to comparable viscosity. The supraspinatus tendon was detached bilaterally in 33 Sprague-Dawley rats (66 shoulders). Eight weeks later, each detached tendon was repaired, and a hydrogel mixture or control was injected at the repair site. Eight weeks after repair, shoulder samples were harvested and assigned for biomechanical testing (n = 42 shoulders) or a combination of bone morphological and histological assessment (n = 24 shoulders). Biomechanical testing showed significantly higher failure load and stiffness in the concentrated PRP group than in control. Yield load in the initial and concentrated PRP groups were significantly higher than that in the control. There were no statistically significant differences between the initial and concentrated PRP groups. The addition of the highly concentrated PRP to stem cells-seeded tendon hydrogel improved healing biomechanically after chronic rotator cuff injury in rats compared to control. However, synergistic and dose-dependent effects were not seen.
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Affiliation(s)
- Hiroki Oda
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Yukitoshi Kaizawa
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Austin Franklin
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Uriel Sanchez Rangel
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Hunter Storaci
- Department of Orthopedic Surgery, Stanford University School of Medicine, Redwood City, CA, USA
| | - Jung Gi Min
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Zhen Wang
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Geoffrey D. Abrams
- Department of Orthopedic Surgery, Stanford University School of Medicine, Redwood City, CA, USA
| | - James Chang
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Paige M. Fox
- Division of Plastic & Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine and Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
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23
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Bai L, Han Q, Meng Z, Chen B, Qu X, Xu M, Su Y, Qiu Z, Xue Y, He J, Zhang J, Yin Z. Bioprinted living tissue constructs with layer-specific, growth factor-loaded microspheres for improved enthesis healing of a rotator cuff. Acta Biomater 2022; 154:275-289. [PMID: 36328126 DOI: 10.1016/j.actbio.2022.10.058] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 10/13/2022] [Accepted: 10/26/2022] [Indexed: 11/09/2022]
Abstract
Substantial challenges remain in constructing the native tendon-to-bone interface for rotator cuff healing owing to the enthesis tissues' highly organized structural and compositional gradients. Herein, we propose to bioprint living tissue constructs with layer-specific growth factors (GFs) to promote enthesis regeneration by guiding the zonal differentiation of the loaded stem cells in situ. The sustained release of tenogenic, chondrogenic, and osteogenic GFs was achieved via microsphere-based delivery carriers embedded in the bioprinted constructs. Compared to the basal construct without GFs, the layer-specific tissue analogs realized region-specific differentiation of stem cells in vitro. More importantly, bioprinted living tissue constructs with layer-specific GFs rapidly enhanced the enthesis regeneration in a rabbit rotator cuff tear model in terms of biomechanical restoration, collagen deposition, and alignment, showing gradient interface of fibrocartilage structures with aligned collagen fibrils and an ultimate load failure of 154.3 ± 9.5 N resembling those of native enthesis tissues in 12 weeks. This exploration provides a feasible strategy to engineer living tissue constructions with region-specific differentiation potentials for the functional repair of gradient enthesis tissues. STATEMENT OF SIGNIFICANCE: Previous studies that employed acellular layer-specific scaffolds or stem cells for the reconstruction of the rotator cuff faced challenges due to their insufficient capability to rebuild the anisotropic compositional and structural gradients of native enthesis tissues. This manuscript proposed a living tissue construct with layer-specific, GFs-loaded µS, which can direct in situ and region-specific differentiation of the embedded stem cells to tenogenic, chondrogenic, and osteogenic lineages for functional regeneration of the enthesis tissues. This bioprinted living tissue construct with the unique capability to reduce fibrovascular scar tissue formation and simultaneously facilitate enthesis tissue remodeling might provide a promising strategy to repair complex and gradient tissues in the future.
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Affiliation(s)
- Lang Bai
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Qian Han
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China; State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Zijie Meng
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Baojun Chen
- Department of Surgery of Spine and Spinal Cord, Henan Provincial People's Hospital, 450003, China
| | - Xiaoli Qu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Meiguang Xu
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Yanwen Su
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Zhennan Qiu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yuan Xue
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Jiankang He
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Jing Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Northwest University, 229 Taibai North Road, Xi'an 710069, China.
| | - Zhanhai Yin
- Department of Orthopaedics, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
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24
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Scott NR, Thirunavukkarasu S, Rangel-Moreno J, Griggs DW, Khader SA. CWHM-12, an Antagonist of Integrin-Mediated Transforming Growth Factor-Beta Activation Confers Protection During Early Mycobacterium tuberculosis Infection in Mice. J Interferon Cytokine Res 2022; 42:421-429. [PMID: 35914102 PMCID: PMC9422778 DOI: 10.1089/jir.2022.0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 05/15/2022] [Indexed: 11/12/2022] Open
Abstract
Tuberculosis (TB) caused by the pathogenic bacterium Mycobacterium tuberculosis (Mtb) is one of the most lethal infectious diseases in the world. Presently, Bacillus Calmette-Guerin, the vaccine approved for use against TB, does not offer complete protection against the disease, which necessitates the development of new therapeutics to treat this infection. Overexpression of transforming growth factor beta (TGF-β) is associated with pulmonary profibrotic changes. The inactive TGF-β secreted is activated through its cleavage and release by αv integrins. Integrin-mediated regulation of TGF-β is considered as a master switch in the profibrotic process and a potential therapeutic target. Thus, in this study, we sought to determine if treatment with a broad range antagonist of integrins, CWHM-12, has the potency to inhibit pulmonary fibrosis and enhance Mtb control in a highly susceptible mouse model of Mtb infection, namely the C3Heb/FeJ (FeJ). CWHM-12 treatment at the early stages of Mtb infection was efficacious in reducing disease severity and inflammation associated with decreased iNOS, MIP-2, and IL-10 production without degradation of collagen. This suggests a potential for CWHM-12 targeting of TGF-β to be explored as an adjunct therapeutic for early Mtb infection.
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Affiliation(s)
- Ninecia R. Scott
- Department of Molecular Microbiology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Shyamala Thirunavukkarasu
- Department of Molecular Microbiology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Javier Rangel-Moreno
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, University of Rochester Medical Center, Rochester, New York, USA
| | - David W. Griggs
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Shabaana A. Khader
- Department of Molecular Microbiology, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
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25
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Vascular Endothelial Growth Factor-Capturing Aligned Electrospun Polycaprolactone/Gelatin Nanofibers Promote Patellar Ligament Regeneration. Acta Biomater 2022; 140:233-246. [PMID: 34852300 DOI: 10.1016/j.actbio.2021.11.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 11/21/2021] [Accepted: 11/24/2021] [Indexed: 01/11/2023]
Abstract
Ligament injuries are common in sports and other rigorous activities. It is a great challenge to achieve ligament regeneration after an injury due the avascular structure and low self-renewal capability. Herein, we developed vascular endothelial growth factor (VEGF)-binding aligned electrospun poly(caprolactone)/gelatin (PCL/Gel) scaffolds by incorporating prominin-1-binding peptide (BP) sequence and exploited them for patellar ligament regeneration. The adsorption of BP onto scaffolds was discerned by various techniques, such as Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and confocal laser scanning microscope. The accumulation of VEGF onto scaffolds correlated with the concentration of the peptide in vitro. BP-anchored PCL/Gel scaffolds (BP@PCL/Gel) promoted the tubular formation of human umbilical vein endothelial cells (HUVECs) and wound healing in vitro. Besides, BP containing scaffolds exhibited higher content of CD31+ cells than that of the control scaffolds at 1 week after implantation in vivo. Moreover, BP containing scaffolds improved biomechanical properties and facilitated the regeneration of matured collagen in patellar ligament 4 weeks after implantation in mice. Overall, this strategy of peptide-mediated orchestration of VEGF provides an enticing platform for the ligament regeneration, which may also have broad implications for tissue repair applications. STATEMENT OF SIGNIFICANCE: Ligament injuries are central to sports and other rigorous activities. Given to the avascular nature and poor self-healing capability of injured ligament tissues, it is a burgeoning challenge to fabricate tissue-engineered scaffolds for ligament reconstruction. Vascular endothelial growth factor (VEGF) is pivotal to the neo-vessel formation. However, the high molecular weight of VEGF as well as its short half-life in vitro and in vivo limits its therapeutic potential. To circumvent these limitations, herein, we functionalized aligned electrospun polycaprolactone/gelatin (PCL/Gel)-based scaffolds with VEGF-binding peptide (BP) and assessed their biocompatibility and performance in vitro and in vivo. BP-modified scaffolds accumulated VEGF, improved tube formation of HUVECs, and induced wound healing in vitro, which may have broad implications for regenerative medicine and tissue engineering.
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26
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Tate M, Perera N, Prakoso D, Willis AM, Deo M, Oseghale O, Qian H, Donner DG, Kiriazis H, De Blasio MJ, Gregorevic P, Ritchie RH. Bone Morphogenetic Protein 7 Gene Delivery Improves Cardiac Structure and Function in a Murine Model of Diabetic Cardiomyopathy. Front Pharmacol 2021; 12:719290. [PMID: 34690762 PMCID: PMC8532155 DOI: 10.3389/fphar.2021.719290] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/24/2021] [Indexed: 12/12/2022] Open
Abstract
Diabetes is a major contributor to the increasing burden of heart failure prevalence globally, at least in part due to a disease process termed diabetic cardiomyopathy. Diabetic cardiomyopathy is characterised by cardiac structural changes that are caused by chronic exposure to the diabetic milieu. These structural changes are a major cause of left ventricular (LV) wall stiffness and the development of LV dysfunction. In the current study, we investigated the therapeutic potential of a cardiac-targeted bone morphogenetic protein 7 (BMP7) gene therapy, administered once diastolic dysfunction was present, mimicking the timeframe in which clinical management of the cardiomyopathy would likely be desired. Following 18 weeks of untreated diabetes, mice were administered with a single tail-vein injection of recombinant adeno-associated viral vector (AAV), containing the BMP7 gene, or null vector. Our data demonstrated, after 8 weeks of treatment, that rAAV6-BMP7 treatment exerted beneficial effects on LV functional and structural changes. Importantly, diabetes-induced LV dysfunction was significantly attenuated by a single administration of rAAV6-BMP7. This was associated with a reduction in cardiac fibrosis, cardiomyocyte hypertrophy and cardiomyocyte apoptosis. In conclusion, BMP7 gene therapy limited pathological remodelling in the diabetic heart, conferring an improvement in cardiac function. These findings provide insight for the potential development of treatment strategies urgently needed to delay or reverse LV pathological remodelling in the diabetic heart.
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Affiliation(s)
- Mitchel Tate
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Nimna Perera
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Darnel Prakoso
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,School of Biosciences, The University of Melbourne, Parkville, VIC, Australia
| | - Andrew M Willis
- Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Minh Deo
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Osezua Oseghale
- Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
| | - Hongwei Qian
- Centre for Muscle Research, Department of Anatomy and Physiology, The University of Melbourne, Parkville, VIC, Australia
| | - Daniel G Donner
- Preclinical Microsurgery and Imaging, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Cardiometabolic Health, The University of Melbourne, Parkville, VIC, Australia
| | - Helen Kiriazis
- Preclinical Microsurgery and Imaging, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Cardiometabolic Health, The University of Melbourne, Parkville, VIC, Australia
| | - Miles J De Blasio
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,School of Biosciences, The University of Melbourne, Parkville, VIC, Australia.,Department of Pharmacology, Monash University, Clayton, VIC, Australia
| | - Paul Gregorevic
- Centre for Muscle Research, Department of Anatomy and Physiology, The University of Melbourne, Parkville, VIC, Australia.,Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia.,Department of Neurology, The University of Washington, Seattle, WA, United States
| | - Rebecca H Ritchie
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Parkville, VIC, Australia.,Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia.,Department of Pharmacology, Monash University, Clayton, VIC, Australia
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27
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Postoperative malrotation of humerus shaft fracture causes degeneration of rotator cuff and cartilage. Sci Rep 2021; 11:18596. [PMID: 34545141 PMCID: PMC8452695 DOI: 10.1038/s41598-021-98040-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 09/01/2021] [Indexed: 12/28/2022] Open
Abstract
We hypothesized that postoperative malrotation of humeral shaft fractures can alter the bio-mechanical environment of the shoulder; thus, rotator cuff and cartilage degeneration could be induced. Therefore, we designed an animal experiment to evaluate the impact of malrotation deformities after minimally invasive surgery for humeral fractures on the rotator cuff and cartilage, which has rarely been described in previous studies. Twenty-four New Zealand white rabbits were randomly divided into the sham control group (A), negative control group (B) and malrotated group (C). A sham operation with surgical exposure alone was performed in group A. Humeral shaft osteotomy was performed in Group B and C. In Group B, the fractures were fixed in situ with plate -screw system. While in Group C, iatrogenic rotational deformity was created after the proximal end of the fracture being internally rotated by 20 degrees and then subsequently fixed. The animals with bone healing were sacrificed for pathological and biochemical examination. In group C, the modified Mankin scale for cartilage pathology evaluation and the modified Movin scale for tendon both showed highest score among groups with statistical significance (P < 0.05); Disordered alignment and proportion of collagen I/III of rotator cuff were confirmed with picrosirius red staining; Transmission electron microscopy also showed ultrastructural tendon damage. Immunohistochemistry showed that both MMP-1 and MMP-13 expression were significantly higher in group C than groups A and B(P < 0.05). Minimally invasive techniques for humerus shaft fracture might be cosmetically advantageous, but the consequent postoperative malrotation could increase the risk of rotator cuff and cartilage degeneration. This conclusion is supported here by primary evidence from animal experiments.
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Jendzjowsky N, Laing A, Malig M, Matyas J, de Heuvel E, Dumonceaux C, Dumoulin E, Tremblay A, Leigh R, Chee A, Kelly MM. Long-term modulation of airway remodeling in severe asthma following bronchial thermoplasty. Eur Respir J 2021; 59:13993003.00622-2021. [PMID: 34049950 DOI: 10.1183/13993003.00622-2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 05/16/2021] [Indexed: 11/05/2022]
Abstract
RATIONALE Bronchial thermoplasty is a mechanical therapeutic intervention that has been advocated as an effective treatment option for severe asthma. The mechanism is promoted as being related to the attenuation of airway smooth muscle which has been shown to occur in the short-term. However, long-term studies of the effects of bronchial thermoplasty on airway remodeling are few with only limited assessment of airway remodeling indices. OBJECTIVES To evaluate the effect of bronchial thermoplasty on (a) airway epithelial and smooth muscle cells in culture, and (b), airway remodeling in patients with severe asthma who have been prescribed bronchial thermoplasty up to 12-months post-treatment. METHODS The distribution of heat within the airway by bronchial thermoplasty was assessed in a porcine model. Culture of human airway smooth muscle cells and bronchial epithelial cells evaluated the impact of thermal injury. Histological evaluation and morphometric assessment were performed on bronchial biopsies obtained from severe asthma patients at baseline, 6-weeks, and 12-months following bronchial thermoplasty. RESULTS Bronchial thermoplasty resulted in heterogenous heating of the airway wall. Airway smooth muscle cell cultures sustained thermal injury, whilst bronchial epithelial cells were relatively resistant to heat. Airway smooth muscle and neural bundles were significantly reduced at 6-weeks and 12-months post-treatment. At 6-weeks post treatment, submucosal collagen was reduced, and vessel density increased, with both indices returning to baseline at 12-months. Goblet cell numbers, submucosal gland area and subbasement membrane thickness, were not significantly altered at any timepoint examined. CONCLUSIONS Bronchial thermoplasty primarily affects airway smooth muscle and nerves with the effects still present at 12-months post-treatment.
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Affiliation(s)
- Nicholas Jendzjowsky
- Departments of Physiology and Pharmacology .,Departments of Division of Respiratory and Critical Care Physiology and Medicine, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA.,Authors contributed equally to this manuscript
| | - Austin Laing
- Departments of Physiology and Pharmacology.,Departments of Pathology and Laboratory Medicine, University of Calgary, Calgary, Canada.,Authors contributed equally to this manuscript
| | - Michelle Malig
- Departments of Physiology and Pharmacology.,Departments of Pathology and Laboratory Medicine, University of Calgary, Calgary, Canada
| | - John Matyas
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | | | | | - Elaine Dumoulin
- Current address for Department of Medicine, Cumming School of Medicine, Calgary, Canada
| | - Alain Tremblay
- Current address for Department of Medicine, Cumming School of Medicine, Calgary, Canada
| | - Richard Leigh
- Departments of Physiology and Pharmacology.,Current address for Department of Medicine, Cumming School of Medicine, Calgary, Canada
| | - Alex Chee
- Current address for Department of Medicine, Cumming School of Medicine, Calgary, Canada.,Authors contributed equally to this manuscript
| | - Margaret M Kelly
- Departments of Physiology and Pharmacology.,Departments of Pathology and Laboratory Medicine, University of Calgary, Calgary, Canada.,Authors contributed equally to this manuscript
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