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Li Q, Liu J, Su R, Zhen J, Liu X, Liu G. Small extracellular vesicles-shuttled miR-23a-3p from mesenchymal stem cells alleviate renal fibrosis and inflammation by inhibiting KLF3/STAT3 axis in diabetic kidney disease. Int Immunopharmacol 2024; 139:112667. [PMID: 39018690 DOI: 10.1016/j.intimp.2024.112667] [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: 03/26/2024] [Revised: 07/04/2024] [Accepted: 07/08/2024] [Indexed: 07/19/2024]
Abstract
Human umbilical cord mesenchymal stem cells-derived small extracellular vesicles (MSC-sEV) provide a pragmatic solution as a cell-free therapy for patients with diabetic kidney disease (DKD). However, the underlying protective mechanisms of MSC-sEV remain largely unknown in DKD. Invivo and in vitro analyses demonstrated that MSC-sEV attenuated renal fibrosis and inflammation of DKD. The underlying mechanism of the MSC-sEV-induced therapeutic effect was explored by high-throughput sequencing, which identified the unique enrichment of a set of miRNAs in MSC-sEV compared with human skin fibroblasts-sEV (HSF-sEV). Vitro experiments demonstrated that the protective potential was primarily attributed to miR-23a-3p, one of the most abundant miRNAs in MSC-sEV. Further, overexpression or knockdown analyses revealed that miR-23a-3p, and its target Krüppel-like factor 3 (KLF3) suppressed the STAT3 signaling pathway in high glucose (HG) induced HK-2 cells were essential for the renal-protective property of MSC-sEV. Moreover, we found that miR-23a-3p was packaged into MSC-sEV by RNA Binding Motif Protein X-Linked (RBMX) and transmitted to HG-induced HK-2 cells. Finally, inhibiting miR-23a-3p could mitigate the protective effects of MSC-sEV in db/db mice. These findings suggest that a systemic administration of sEV derived from MSC, have the capacity to incorporate into kidney where they can exert renal-protective potential against HG-induced injury through delivery of miR-23a-3p.
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Affiliation(s)
- Qianhua Li
- Nephrology Research Institute of Shandong University, Jinan, Shandong, 250033, China; Department of Nephrology, Multidisciplinary Innovation Center for Nephrology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250033, China
| | - Jiaxi Liu
- Graduate School of Arts and Sciences, Columbia University, USA
| | - Rongyun Su
- Nephrology Research Institute of Shandong University, Jinan, Shandong, 250033, China; Department of Nephrology, Multidisciplinary Innovation Center for Nephrology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250033, China
| | - Junhui Zhen
- Department of Pathology, School of Basic Medical Sciences, Shandong University, Jinan, 250012, China
| | - Xiangchun Liu
- Nephrology Research Institute of Shandong University, Jinan, Shandong, 250033, China; Department of Nephrology, Multidisciplinary Innovation Center for Nephrology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250033, China
| | - Gang Liu
- Nephrology Research Institute of Shandong University, Jinan, Shandong, 250033, China; Department of Nephrology, Multidisciplinary Innovation Center for Nephrology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250033, China; Key laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong,250012, China.
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Hohmann E, Keough N, Frank RM, Rodeo S. Micro-Fragmented Adipose Tissue Demonstrates Comparable Clinical Efficacy to Other Orthobiologic Injections in Treating Symptomatic Knee Osteoarthritis: A Systematic Review of Level I to IV Clinical Studies. Arthroscopy 2024:S0749-8063(24)00175-0. [PMID: 38467171 DOI: 10.1016/j.arthro.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 03/05/2024] [Indexed: 03/13/2024]
Abstract
PURPOSE To perform a systematic review of clinical outcomes in patients who underwent treatment with micro-fragmented aspirated tissue for symptoms of knee osteoarthritis. METHODS Medline, Embase, Scopus, and Google Scholar were screened for studies from 2000 to 2023. Risk of bias (ROB) was assessed using the Cochrane Collaboration's tools and the Risk Of Bias In Non-randomised Studies-of Interventions tool. Study quality was assessed with the modified Coleman Methodology Score and Methodological Index for Non-Randomized Studies score. Heterogeneity was assessed using χ2 and I2 statistics. RESULTS Twenty-one studies were included. One study had a high ROB, 1 had a critical ROB, 3 had serious ROB, and 16 had a moderate ROB. The mean Coleman score was 58, demonstrating fair study quality; the Methodological Index for Non-Randomized Studies score had a mean value of 13, indicating overall fair quality. Best evidence synthesis revealed moderate evidence. The visual analog scale score improved from 5.2 to 3.2 at 6 and 12 months. Knee injury and Osteoarthritis Outcome Score (KOOS) activities of daily living subscore improved from 58.8 to 70.2 at 6 months and 67.5 at 12 months. KOOS pain subscore improved from 54.3 to 70.2 at 6 months and 72.4 at 12 months. KOOS quality of life subscore improved from 33.1 to 43.6 at 6 months and 42.9 at 12 months. KOOS sports subscore improved from 23.7 to 43.6 at 6 months and 57.4 at 12 months. KOOS symptoms subscore improved from 55.3 to 70.1 at 6 months and 67.9 at 12 months. The Western Ontario and McMaster Universities Osteoarthritis Index score steadily increased from 61.8 at baseline to 78.4 at 12 months. CONCLUSIONS micro-fragmented aspirated tissue injection therapy for the treatment of symptomatic knee osteoarthritis is effective and improves pain and functional outcomes. Moderate study quality combined with a moderate risk of bias, moderate certainty of evidence, and moderate best synthesis evidence reduces external validity. Therefore, the results should be interpreted with a degree of caution. LEVEL OF EVIDENCE Level IV, systematic review of Level I-IV studies.
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Affiliation(s)
- Erik Hohmann
- Medical School, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa; Department of Orthopaedic Surgery and Sports Medicine, Burjeel Hospital for Advanced Surgery, Dubai, United Arab Emirates.
| | - Natalie Keough
- Department of Health Sciences, Clinical Anatomy and Imaging, Warwick Medical School, University of Warwick, Coventry, U.K; Department of Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Rachel M Frank
- Department of Orthopaedic Surgery, University of Colorado, School of Medicine, Denver, Colorado, U.S.A
| | - Scott Rodeo
- Sports Medicine and Shoulder Service, New York, New York, U.S.A.; Orthopaedic Soft Tissue Research Program, New York, New York, U.S.A.; Department of Orthopaedic Surgery, Weill Medical College of Cornell University, New York, New York, U.S.A.; The Hospital for Special Surgery, New York, New York, U.S.A.; New York Giants Football, New York, New York, U.S.A
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Goncharov EN, Koval OA, Igorevich EI, Encarnacion Ramirez MDJ, Nurmukhametov R, Valentinovich KK, Montemurro N. Analyzing the Clinical Potential of Stromal Vascular Fraction: A Comprehensive Literature Review. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:221. [PMID: 38399509 PMCID: PMC10890435 DOI: 10.3390/medicina60020221] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/11/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024]
Abstract
Background: Regenerative medicine is evolving with discoveries like the stromal vascular fraction (SVF), a diverse cell group from adipose tissue with therapeutic promise. Originating from fat cell metabolism studies in the 1960s, SVF's versatility was recognized after demonstrating multipotency. Comprising of cells like pericytes, smooth muscle cells, and, notably, adipose-derived stem cells (ADSCs), SVF offers tissue regeneration and repair through the differentiation and secretion of growth factors. Its therapeutic efficacy is due to these cells' synergistic action, prompting extensive research. Methods: This review analyzed the relevant literature on SVF, covering its composition, action mechanisms, clinical applications, and future directions. An extensive literature search from January 2018 to June 2023 was conducted across databases like PubMed, Embase, etc., using specific keywords. Results: The systematic literature search yielded a total of 473 articles. Sixteen articles met the inclusion criteria and were included in the review. This rigorous methodology provides a framework for a thorough and systematic analysis of the existing literature on SVF, offering robust insights into the potential of this important cell population in regenerative medicine. Conclusions: Our review reveals the potential of SVF, a heterogeneous cell mixture, as a powerful tool in regenerative medicine. SVF has demonstrated therapeutic efficacy and safety across disciplines, improving pain, tissue regeneration, graft survival, and wound healing while exhibiting immunomodulatory and anti-inflammatory properties.
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Affiliation(s)
| | | | | | | | - Renat Nurmukhametov
- Neurological Surgery, Peoples Friendship University of Russia, 103274 Moscow, Russia
| | | | - Nicola Montemurro
- Department of Neurosurgery, Azienda Ospedaliero Universitaria Pisana (AOUP), 56100 Pisa, Italy
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Goncharov EN, Koval OA, Nikolaevich Bezuglov E, Encarnacion Ramirez MDJ, Engelgard M, Igorevich EI, Saporiti A, Valentinovich Kotenko K, Montemurro N. Stromal Vascular Fraction Therapy for Knee Osteoarthritis: A Systematic Review. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2090. [PMID: 38138193 PMCID: PMC10744886 DOI: 10.3390/medicina59122090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/22/2023] [Accepted: 11/26/2023] [Indexed: 12/24/2023]
Abstract
Background and Objectives: Knee osteoarthritis (OA) is a widespread joint disease, set to increase due to aging and rising obesity. Beyond cartilage degeneration, OA involves the entire joint, including the synovial fluid, bones, and surrounding muscles. Existing treatments, such as NSAIDs and corticosteroid injections, mainly alleviate symptoms but can have complications. Joint replacement surgeries are definitive but carry surgical risks and are not suitable for all. Stromal vascular fraction (SVF) therapy is a regenerative approach using cells from a patient's adipose tissue. SVF addresses as degenerative and inflammatory aspects, with potential for cartilage formation and tissue regeneration. Unlike traditional treatments, SVF may reverse OA changes. Being autologous, it reduces immunogenic risks. Materials and Methods: A systematic search was undertaken across PubMed, Medline, and Scopus for relevant studies published from 2017 to 2023. Keywords included "SVF", "Knee Osteoarthritis", and "Regenerative Medicine". Results: This systematic search yielded a total of 172 articles. After the removal of duplicates and an initial title and abstract screening, 94 full-text articles were assessed for eligibility. Of these, 22 studies met the inclusion criteria and were subsequently included in this review. Conclusions: This review of SVF therapy for knee OA suggests its potential therapeutic benefits. Most studies confirmed its safety and efficacy, and showed improved clinical outcomes and minimal adverse events. However, differences in study designs and sizes require a careful interpretation of the results. While evidence supports SVF's positive effects, understanding methodological limitations is key. Incorporating SVF is promising, but the approach should prioritize patient safety and rigorous research.
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Affiliation(s)
| | | | | | | | - Mikhail Engelgard
- Petrovsky Russian Scientific Center of Surgery, 121359 Moscow, Russia
| | | | - Alessandra Saporiti
- Department of Pharmaceuticals, Azienda Usl Toscana Nord Ovest, 56100 Pisa, Italy
| | | | - Nicola Montemurro
- Department of Neurosurgery, Azienda Ospedaliero Universitaria Pisana (AOUP), 56100 Pisa, Italy
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Salagean A, Nechifor-Boila A, Bajwa N, Pastorello Y, Slevin M. Micro-Fragmented Adipose Tissue as a Natural Scaffold for Targeted Drug Delivery in Brain Cancer. Int J Mol Sci 2023; 24:11530. [PMID: 37511289 PMCID: PMC10380718 DOI: 10.3390/ijms241411530] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Major limitations in the effective treatment of neurological cancer include systemic cytotoxicity of chemotherapy, inaccessibility, and inoperability. The capability to successfully target a drug to the tumor site(s) without incurring serious side effects-especially in the case of aggressive tumors, such as glioblastoma and neuroblastoma-would represent a significant breakthrough in therapy. Orthotopic systems, capable of storing and releasing proteins over a prolonged period at the site of a tumor, that utilize nanoparticles, liposomes, and hydrogels have been proposed. One candidate for drug delivery is Micro-Fragmented Adipose Tissue (MFAT). Easily obtained from the patient by abdominal subcutaneous liposuction (autologous), and with a high content of Mesenchymal Stem Cells (MSCs), mechanically derived nanofat is a natural tissue graft with a structural scaffold organization. It has a well-preserved stromal vascular fraction and a prolonged capacity to secrete anti-tumorigenic concentrations of pre-absorbed chemotherapeutics within extracellular vesicles. This review discusses current evidence supporting the potential of drug-modified MFAT for the treatment of neurological cancer with respect to recent preclinical and in vitro studies. Possible limitations and future perspectives are considered.
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Affiliation(s)
- Alex Salagean
- Faculty of Medicine, George Emil Palade University of Medicine, Pharmacy, Science and Technology, 540142 Târgu Mures, Romania
| | - Adela Nechifor-Boila
- Department of Histology, George Emil Palade University of Medicine, Pharmacy, Science and Technology, 540142 Târgu Mures, Romania
| | - Nosherwan Bajwa
- Department of Neurosurgery, DIAKO Hospital, 24939 Flensburg, Germany
| | - Ylenia Pastorello
- Department of Anatomy and Embryology, George Emil Palade University of Medicine, Pharmacy, Science and Technology, 540142 Târgu Mures, Romania
| | - Mark Slevin
- Center for Advanced Medical and Pharmaceutical Research (CCAMF), George Emil Palade University of Medicine, Pharmacy, Science and Technology, 540142 Târgu Mures, Romania
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Vargel İ, Tuncel A, Baysal N, Hartuç-Çevik İ, Korkusuz F. Autologous Adipose-Derived Tissue Stromal Vascular Fraction (AD-tSVF) for Knee Osteoarthritis. Int J Mol Sci 2022; 23:13517. [PMID: 36362308 PMCID: PMC9658499 DOI: 10.3390/ijms232113517] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/28/2022] [Accepted: 10/30/2022] [Indexed: 07/30/2023] Open
Abstract
Adipose tissue contains adult mesenchymal stem cells that may modulate the metabolism when applied to other tissues. Stromal vascular fraction (SVF) can be isolated from adipose tissue mechanically and/or enzymatically. SVF was recently used to decrease the pain and improve the function of knee osteoarthritis (OA) patients. Primary and/or secondary OA causes inflammation and degeneration in joints, and regenerative approaches that may modify the natural course of the disease are limited. SVF may modulate inflammation and initiate regeneration in joint tissues by initiating a paracrine effect. Chemokines released from SVF may slow down degeneration and stimulate regeneration in joints. In this review, we overviewed articular joint cartilage structures and functions, OA, and macro-, micro-, and nano-fat isolation techniques. Mechanic and enzymatic SVF processing techniques were summarized. Clinical outcomes of adipose tissue derived tissue SVF (AD-tSVF) were evaluated. Medical devices that can mechanically isolate AD-tSVF were listed, and publications referring to such devices were summarized. Recent review manuscripts were also systematically evaluated and included. Transferring adipose tissues and cells has its roots in plastic, reconstructive, and aesthetic surgery. Micro- and nano-fat is also transferred to other organs and tissues to stimulate regeneration as it contains regenerative cells. Minimal manipulation of the adipose tissue is recently preferred to isolate the regenerative cells without disrupting them from their natural environment. The number of patients in the follow-up studies are recently increasing. The duration of follow up is also increasing with favorable outcomes from the short- to mid-term. There are however variations for mean age and the severity of knee OA patients between studies. Positive outcomes are related to the higher number of cells in the AD-tSVF. Repetition of injections and concomitant treatments such as combining the AD-tSVF with platelet rich plasma or hyaluronan are not solidified. Good results were obtained when combined with arthroscopic debridement and micro- or nano-fracture techniques for small-sized cartilage defects. The optimum pressure applied to the tissues and cells during filtration and purification of the AD-tSVF is not specified yet. Quantitative monitoring of articular joint cartilage regeneration by ultrasound, MR, and synovial fluid analysis as well as with second-look arthroscopy could improve our current knowledge on AD-tSVF treatment in knee OA. AD-tSVF isolation techniques and technologies have the potential to improve knee OA treatment. The duration of centrifugation, filtration, washing, and purification should however be standardized. Using gravity-only for isolation and filtration could be a reasonable approach to avoid possible complications of other methodologies.
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Affiliation(s)
- İbrahim Vargel
- Department of Plastic Reconstructive and Aesthetic Surgery, Medical Faculty, Hacettepe University, Altındag, Ankara 06230, Turkey
| | - Ali Tuncel
- Department of Chemical Engineering, Engineering Faculty, Hacettepe University, Universiteler Mahallesi, Hacettepe Beytepe Campus #31, Çankaya, Ankara 06800, Turkey
| | - Nilsu Baysal
- Medical Faculty, Hacettepe University, Altındag, Ankara 06230, Turkey
| | - İrem Hartuç-Çevik
- Department of Sports Medicine, Medical Faculty, Hacettepe University, Altındag, Ankara 06230, Turkey
| | - Feza Korkusuz
- Department of Sports Medicine, Medical Faculty, Hacettepe University, Altındag, Ankara 06230, Turkey
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7
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López F. Safety and efficacy of intra-articular infiltration of purified autologous adipose tissue for osteoarthritis treatment: a pre-post study. J Exp Orthop 2022; 9:97. [PMID: 36163597 PMCID: PMC9512941 DOI: 10.1186/s40634-022-00534-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/06/2022] [Indexed: 11/19/2022] Open
Affiliation(s)
- Félix López
- Maestranza Medical Center, Madrid, Spain. .,Bluehealthcare, Madrid, Spain.
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Methodological Flaws in Meta-Analyses of Clinical Studies on the Management of Knee Osteoarthritis with Stem Cells: A Systematic Review. Cells 2022; 11:cells11060965. [PMID: 35326416 PMCID: PMC8946093 DOI: 10.3390/cells11060965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 12/13/2022] Open
Abstract
(1) Background: Conclusions of meta-analyses of clinical studies may substantially influence opinions of prospective patients and stakeholders in healthcare. Nineteen meta-analyses of clinical studies on the management of primary knee osteoarthritis (pkOA) with stem cells, published between January 2020 and July 2021, came to inconsistent conclusions regarding the efficacy of this treatment modality. It is possible that a separate meta-analysis based on an independent, systematic assessment of clinical studies on the management of pkOA with stem cells may reach a different conclusion. (2) Methods: PubMed, Web of Science, and the Cochrane Library were systematically searched for clinical studies and meta-analyses of clinical studies on the management of pkOA with stem cells. All clinical studies and meta-analyses identified were evaluated in detail, as were all sub-analyses included in the meta-analyses. (3) Results: The inconsistent conclusions regarding the efficacy of treating pkOA with stem cells in the 19 assessed meta-analyses were most probably based on substantial differences in literature search strategies among different authors, misconceptions about meta-analyses themselves, and misconceptions about the comparability of different types of stem cells with regard to their safety and regenerative potential. An independent, systematic review of the literature yielded a total of 183 studies, of which 33 were randomized clinical trials, including a total of 6860 patients with pkOA. However, it was not possible to perform a scientifically sound meta-analysis. (4) Conclusions: Clinicians should interpret the results of the 19 assessed meta-analyses of clinical studies on the management of pkOA with stem cells with caution and should be cautious of the conclusions drawn therein. Clinicians and researchers should strive to participate in FDA and/or EMA reviewed and approved clinical trials to provide clinically and statistically valid efficacy.
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Aletto C, Oliva F, Maffulli N. Knee intra-articular administration of stromal vascular fraction obtained from adipose tissue: A systematic review. J Clin Orthop Trauma 2022; 25:101773. [PMID: 35127440 PMCID: PMC8808153 DOI: 10.1016/j.jcot.2022.101773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/07/2022] [Accepted: 01/13/2022] [Indexed: 01/24/2023] Open
Abstract
Osteoarthritis is a debilitating chronic degenerative disease of cartilage joint surfaces and the knee is the weight-bearing joint most frequently plagued. Intra-articular cell therapies have recently emerged as a method to manage knee osteoarthritis. A literature search identifying all articles involving use of SVF to treat knee osteoarthritis was performed, consulting several databases. In conclusion, 24 clinical trials analysed report good to excellent clinical and radiographic results for the treatment of knee OA with the use of intraarticular administration of SVF.
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Affiliation(s)
- Cristian Aletto
- Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, 84084, Baronissi, Italy,Clinica Ortopedica, Ospedale San Giovanni di Dio e Ruggi D'Aragona, 84131, Salerno, Italy,Corresponding author. Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, 84084, Baronissi, Italy.
| | - Francesco Oliva
- Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, 84084, Baronissi, Italy,Clinica Ortopedica, Ospedale San Giovanni di Dio e Ruggi D'Aragona, 84131, Salerno, Italy,Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, 275 Bancroft Road, London, E1 4DG, England, UK,Keele University, Faculty of Medicine, School of Pharmacy and Bioengineering, Guy Hilton Research Centre, Thornburrow Drive, Hartshill, Stoke-on-Trent, ST4 7QB, England, UK
| | - Nicola Maffulli
- Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, 84084, Baronissi, Italy,Clinica Ortopedica, Ospedale San Giovanni di Dio e Ruggi D'Aragona, 84131, Salerno, Italy,Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, 275 Bancroft Road, London, E1 4DG, England, UK,Keele University, Faculty of Medicine, School of Pharmacy and Bioengineering, Guy Hilton Research Centre, Thornburrow Drive, Hartshill, Stoke-on-Trent, ST4 7QB, England, UK
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Desando G, Grigolo B, Deangelles Pereira Florentino Á, Teixeira MW, Barbagallo F, Naro F, da Silva-Júnior VA, Soares AF. Preclinical Evidence of Intra-Articular Autologous Cartilage Micrograft for Osteochondral Repair: Evaluation in a Rat Model. Cartilage 2021; 13:1770S-1779S. [PMID: 34474579 PMCID: PMC8804823 DOI: 10.1177/19476035211042408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE The search for an effective and long-lasting strategy to treat osteochondral defects (OCD) is a great challenge. Regenerative medicine launched a new era of research in orthopaedics for restoring normal tissue functions. The aim of this study was to test the healing potential of Rigenera micrografting technology in a rat model of OCD by investigating 2 cartilage donor sites. METHODS Full-thickness OCD was bilaterally created in the knee joints of rats. Animals were randomly divided into 2 groups based on the anatomical site used for micrograft collection: articular (TO) and xiphoid (XA). Micrograft was injected into the knee via an intra-articular approach. The contralateral joint served as the control. Euthanasia was performed 2 months after the set-up of OCD. Histological evaluations foresaw hematoxylin/eosin and safranin-O/fast green staining, the modified O'Driscoll score, and collagen 1A1 and 2A1 immunostaining. Kruskal-Wallis and the post hoc Dunn test were performed to evaluate differences among groups. RESULTS Histological results showed defect filling in both autologous micrografts. The TO group displayed tissue repair with more hyaline-like characteristics than its control (P < 0.01). A fibrocartilaginous aspect was instead noticed in the XA group. Immunohistochemical assessments on type 2A1 and type 1 collagens confirmed the best histological results in the TO group. CONCLUSIONS TO and XA groups contributed to a different extent to fill the OCD lesions. TO group provided the best histological and immunohistochemical results; therefore, it could be a promising method to treat OCD after the validation in a larger animal model.
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Affiliation(s)
- Giovanna Desando
- Laboratorio RAMSES, IRCCS Istituto
Ortopedico Rizzoli, Bologna, Italy
| | - Brunella Grigolo
- Laboratorio RAMSES, IRCCS Istituto
Ortopedico Rizzoli, Bologna, Italy,Brunella Grigolo, Laboratorio RAMSES, IRCCS
Istituto Ortopedico Rizzoli, Via di Barbiano, 1/10, Bologna, Emilia-Romagna
40136, Italy.
| | | | | | - Federica Barbagallo
- Department of Experimental Medicine,
Sapienza University of Rome, Rome, Italy
| | - Fabio Naro
- Department of Anatomical, Histological,
Forensic and Orthopaedic Sciences, Sapienza University of Rome, Rome, Italy
| | | | - Anísio Francisco Soares
- Department of Animal Morphology and
Physiology, Federal Rural University of Pernambuco–UFRPE, Brazil
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