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Wu Y, Wu S, Chen Z, Yang E, Yu H, Zhang G, Lian X, Xu J. Machine learning and single-cell analysis identify the mitophagy-associated gene TOMM22 as a potential diagnostic biomarker for intervertebral disc degeneration. Heliyon 2024; 10:e37378. [PMID: 39296040 PMCID: PMC11407931 DOI: 10.1016/j.heliyon.2024.e37378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2024] [Accepted: 09/02/2024] [Indexed: 09/21/2024] Open
Abstract
Background Mitophagy selectively eliminates potentially cytotoxic and damaged mitochondria and effectively prevents excessive cytotoxicity from damaged mitochondria, thereby attenuating inflammatory and oxidative responses. However, the potential role of mitophagy in intervertebral disc degeneration remains to be elucidated. Methods The GSVA method, two machine learning methods (SVM-RFE algorithm and random forest), the CIBERSORT and MCPcounter methods, as well as the consensus clustering method and the WGCNA algorithm were used to analyze the involvement of mitophagy in intervertebral disc degeneration, the diagnostic value of mitophagy-associated genes in intervertebral disc degeneration, and the infiltration of immune cells, and identify the gene modules that were closely related to mitophagy. Single-cell analysis was used to detect mitophagy scores and TOMM22 expression, and pseudo-temporal analysis was used to explore the function of TOMM22 in nucleus pulposus cells. In addition, TOMM22 expression was compared between human normal and degenerated intervertebral disc tissue samples by immunohistochemistry and PCR. Results This study identified that the mitophagy pathway score was elevated in intervertebral disc degeneration compared with the normal condition. A strong link was present between mitophagy genes and immune cells, which may be used to typify intervertebral disc degeneration. The single-cell level showed that mitophagy-associated gene TOMM22 was highly expressed in medullary cells of the disease group. Further investigations indicated the upregulation of TOMM22 expression in late-stage nucleus pulposus cells and its role in cellular communication. In addition, human intervertebral disc tissue samples established that TOMM22 levels were higher in disc degeneration samples than in normal samples. Conclusions Our findings revealed that mitophagy may be used in the diagnosis of intervertebral disc degeneration and its typing, and TOMM22 is a molecule in this regard and may act as a potential diagnostic marker in intervertebral disc degeneration.
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Affiliation(s)
- Yinghao Wu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Shengting Wu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Zhiheng Chen
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Erzhu Yang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - Haiyue Yu
- Bengbu Medical University, Anhui, 233030, PR China
| | - Guowang Zhang
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - XiaoFeng Lian
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
| | - JianGuang Xu
- Department of Orthopedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, PR China
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Anitua E, Tierno R, Martínez de Lagrán Z, Alkhraisat MH. Impact of inflammatory skin conditions on the biological profile of plasma rich in growth factor. Tissue Cell 2024; 91:102560. [PMID: 39299031 DOI: 10.1016/j.tice.2024.102560] [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: 07/01/2024] [Revised: 08/29/2024] [Accepted: 09/10/2024] [Indexed: 09/22/2024]
Abstract
Plasma rich in growth factors (PRGF) can be used over patients suffering from dermatoses due to its anti-inflammatory effect. However, this population group might present soluble autoimmune components and there is limited information about the effect of chronic skin inflammation on PRGF bioactive properties. With the aim of characterizing PRGF composition, PRGF from healthy (H) donors and patients with atopic dermatitis (AD), psoriasis (PS), or lichen sclerosus (LS) was obtained. In order to reduce the inflammatory component, leukocyte exclusion and heat-inactivation (Immunosafe) were tested. Haematological-serological parameters, platelet functionality, clot microstructure, protein content and bioactivity were determined. Mean values and 95 % confidence intervals (mean[95 % CI]) were computed for key haematological parameters, such as platelet (410×103/mm3[371-449]) and leukocyte content (205×103/mm3[148-262]), platelet activation (resting: 4.3 %[3.1-5.5] and activated: 97.4 %[96.7-98.0]), the concentration of plasma proteins and morphogens, including immunoglobulins A (210.7 mg/dL[191.8-229.6]), G (933.1 mg/dL[887.2-978.9]), E (783.5 mg/dL[54.4-1512.6]), and M (115.0 mg/dL[97.1-133.0]), Complement Protein (31.6 mg/mL[26.6-36.6]), C-Reactive protein (3.1 mg/L[2.0-4.1]), TGF-β1 (35975.6 pg/mL[34221.3-37729.8]), fibronectin (146410.0 ng/mL[136518.3-156301.7]), PDGF-AB (13308.5 pg/mL[12401.0-14216.0]), CD40L (2389.3 pg/mL[1887.7-2890.8]), IL-4 (0.12 pg/mL[0.07-0.18]), IL-13 (35.4 pg/mL[21.0-49.7]), IL-1β (0.09 pg/mL[0.06-0.11]) and TNF-α (0.31 pg/mL[0.24-0.38]), and also for cell proliferation (332.9ngDNA/mL[317.4-348.3]), viability (135.6 %[132.0-139.2]) and migration (103.8cells/mm2[98.3-109.3]). Plasma from AD donors presented increased Immunoglobulin E (IgE) that was significantly reduced after Immunosafe along with the complement system and autoantibodies. Platelet functionality was altered for AD, but no microstructure differences were identified. Pathological groups presented reduced concentration of fibronectin (AD/LS) and Platelet-Derived Growth Factor (PDGF-AB) (P). Immunosafe treatment reduced Cluster of Differentiation 40 Protein (CD40L), interleukin 1β (IL-1β), and Tumor Necrosis Factor α (TNF-α) concentrations. Fibroblasts supplemented with PRGF obtained from pathological patients (PS/AD) showed reduced viability but Immunosafe increased cell proliferation and migration in SP (LS) and L-SP samples (PS/AD). In conclusion, PRGF derived from pathological patients present autoimmune components, but heat-inactivation or leukocyte exclusion could minimize local side effects.
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Affiliation(s)
- Eduardo Anitua
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI Biotechnology Institute, Vitoria, Spain.
| | - Roberto Tierno
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI Biotechnology Institute, Vitoria, Spain
| | | | - Mohammad H Alkhraisat
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI Biotechnology Institute, Vitoria, Spain
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D'Souza RS, Her YF, Hussain N, Karri J, Schatman ME, Calodney AK, Lam C, Buchheit T, Boettcher BJ, Chang Chien GC, Pritzlaff SG, Centeno C, Shapiro SA, Klasova J, Grider JS, Hubbard R, Ege E, Johnson S, Epstein MH, Kubrova E, Ramadan ME, Moreira AM, Vardhan S, Eshraghi Y, Javed S, Abdullah NM, Christo PJ, Diwan S, Hassett LC, Sayed D, Deer TR. Evidence-Based Clinical Practice Guidelines on Regenerative Medicine Treatment for Chronic Pain: A Consensus Report from a Multispecialty Working Group. J Pain Res 2024; 17:2951-3001. [PMID: 39282657 PMCID: PMC11402349 DOI: 10.2147/jpr.s480559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 08/21/2024] [Indexed: 09/19/2024] Open
Abstract
Purpose Injectable biologics have not only been described and developed to treat dermal wounds, cardiovascular disease, and cancer, but have also been reported to treat chronic pain conditions. Despite emerging evidence supporting regenerative medicine therapy for pain, many aspects remain controversial. Methods The American Society of Pain and Neuroscience (ASPN) identified the educational need for an evidence-based guideline on regenerative medicine therapy for chronic pain. The executive board nominated experts spanning multiple specialties including anesthesiology, physical medicine and rehabilitation, and sports medicine based on expertise, publications, research, and clinical practice. A steering committee selected preliminary questions, which were reviewed and refined. Evidence was appraised using the United States Preventive Services Task Force (USPSTF) criteria for evidence level and degree of recommendation. Using a modified Delphi approach, consensus points were distributed to all collaborators and each collaborator voted on each point. If collaborators provided a decision of "disagree" or "abstain", they were invited to provide a rationale in a non-blinded fashion to the committee chair, who incorporated the respective comments and distributed revised versions to the committee until consensus was achieved. Results Sixteen questions were selected for guideline development. Questions that were addressed included type of injectable biologics and mechanism, evidence in treating chronic pain indications (eg, tendinopathy, muscular pathology, osteoarthritis, intervertebral disc disease, neuropathic pain), role in surgical augmentation, dosing, comparative efficacy between injectable biologics, peri-procedural practices to optimize therapeutic response and quality of injectate, federal regulations, and complications with mitigating strategies. Conclusion In well-selected individuals with certain chronic pain indications, use of injectable biologics may provide superior analgesia, functionality, and/or quality of life compared to conventional medical management or placebo. Future high-quality randomized clinical trials are warranted with implementation of minimum reporting standards, standardization of preparation protocols, investigation of dose-response associations, and comparative analysis between different injectable biologics.
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Affiliation(s)
- Ryan S D'Souza
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Yeng F Her
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Nasir Hussain
- Department of Anesthesiology, The Ohio State Wexner Medical Center, Columbus, OH, USA
| | - Jay Karri
- Departments of Orthopedic Surgery and Anesthesiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Michael E Schatman
- Department of Anesthesiology, Perioperative Care, & Pain Medicine, NYU Grossman School of Medicine, New York, NY, USA
| | | | - Christopher Lam
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Thomas Buchheit
- Department of Anesthesiology, Duke University, Durham, NC, USA
| | - Brennan J Boettcher
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | | | - Scott G Pritzlaff
- Department of Anesthesiology and Pain Medicine, University of California, Davis, Sacramento, CA, USA
| | | | - Shane A Shapiro
- Department of Orthopedic Surgery, Mayo Clinic, Jacksonville, FL, USA
| | - Johana Klasova
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Jay S Grider
- Department of Anesthesiology, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Ryan Hubbard
- Department of Sports Medicine, Anderson Orthopedic Clinic, Arlington, VA, USA
| | - Eliana Ege
- Department of Physical Medicine & Rehabilitation, Baylor College of Medicine, Houston, TX, USA
| | - Shelby Johnson
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Max H Epstein
- Department of Physical Medicine & Rehabilitation, Harvard Medical School, Boston, MA, USA
| | - Eva Kubrova
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Mohamed Ehab Ramadan
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Alexandra Michelle Moreira
- Department of Physical Medicine & Rehabilitation, University of Miami/Jackson Memorial Hospital, Miami, FL, USA
| | - Swarnima Vardhan
- Department of Internal Medicine, Yale New Haven Health - Bridgeport Hospital, Bridgeport, CT, USA
| | - Yashar Eshraghi
- Department of Anesthesiology & Critical Care Medicine, Ochsner Health System, New Orleans, LA, USA
| | - Saba Javed
- Department of Pain Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Newaj M Abdullah
- Department of Anesthesiology, University of Utah, Salt Lake City, UT, USA
| | - Paul J Christo
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins Hospital, Baltimore, MD, USA
| | - Sudhir Diwan
- Department of Pain Medicine, Advanced Spine on Park Avenue, New York City, NY, USA
| | | | - Dawood Sayed
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Timothy R Deer
- Department of Anesthesiology and Pain Medicine, West Virginia University School of Medicine, Charleston, WV, USA
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Jia K, You J, Zhu Y, Li M, Chen S, Ren S, Chen S, Zhang J, Wang H, Zhou Y. Platelet-rich fibrin as an autologous biomaterial for bone regeneration: mechanisms, applications, optimization. Front Bioeng Biotechnol 2024; 12:1286035. [PMID: 38689760 PMCID: PMC11058865 DOI: 10.3389/fbioe.2024.1286035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 03/22/2024] [Indexed: 05/02/2024] Open
Abstract
Platelet-rich fibrin, a classical autologous-derived bioactive material, consists of a fibrin scaffold and its internal loading of growth factors, platelets, and leukocytes, with the gradual degradation of the fibrin scaffold and the slow release of physiological doses of growth factors. PRF promotes vascular regeneration, promotes the proliferation and migration of osteoblast-related cells such as mesenchymal cells, osteoblasts, and osteoclasts while having certain immunomodulatory and anti-bacterial effects. PRF has excellent osteogenic potential and has been widely used in the field of bone tissue engineering and dentistry. However, there are still some limitations of PRF, and the improvement of its biological properties is one of the most important issues to be solved. Therefore, it is often combined with bone tissue engineering scaffolds to enhance its mechanical properties and delay its degradation. In this paper, we present a systematic review of the development of platelet-rich derivatives, the structure and biological properties of PRF, osteogenic mechanisms, applications, and optimization to broaden their clinical applications and provide guidance for their clinical translation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yanmin Zhou
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, Jilin, China
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Huang J, Lian SL, Han JH, Lu ZC, Ding Y. Pure platelet-rich plasma promotes semaphorin-3A expression: a novel insight to ameliorate intervertebral disk degeneration in vitro. J Orthop Surg Res 2023; 18:789. [PMID: 37864189 PMCID: PMC10588088 DOI: 10.1186/s13018-023-04290-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 10/15/2023] [Indexed: 10/22/2023] Open
Abstract
INTRODUCTION Intervertebral disk degeneration (IVDD) can be effectively treated using platelet-rich plasma (PRP). While the exact process is fully understood, it is believed that using pure PRP (P-PRP) without leukocytes is a better option for preventing IVDD. Semaphorin-3A (Sema3A), an inhibitor of angiogenesis and innervation, is essential for preserving IVDD's homeostasis. Whether PRP prevents IVDD by modifying Sema3A has yet to receive much research. This work aims to clarify how P-PRP affects Sema3A when IVDD develops in vitro. METHODS Nucleus pulposus cells (NPCs) isolated from 8-week-old male Sprague-Dawley rats were exposed to 10 ng/ml IL-1β and then treated with P-PRP or leukocyte platelet-rich plasma (L-PRP) in vitro, followed by measuring cell proliferation, apoptosis and microstructures, inflammatory gene and Sema3A expression, as well as anabolic and catabolic protein expression by immunostaining, quantitative real-time polymerase chain reaction (qPCR), western blot, and enzyme-linked immunosorbent assay (ELISA). RESULTS In comparison with L-PRP, P-PRP had a higher concentration of growth factors but a lower concentration of inflammatory substances. P-PRP increased the proliferation of NPCs, while IL-1 relieved the amount of apoptosis due to its intervention. Anabolic genes, aggrecan, and collagen II had higher expression levels. MMP-3 and ADAMTS-4, two catabolic or inflammatory genes, showed lower expression levels. Sema3A activity was enhanced after P-PRP injection, whereas CD31 and NF200 expression levels were suppressed. CONCLUSIONS P-PRP enhanced the performance of NPCs in IVDD by modifying the NF-κB signaling pathway and encouraging Sema3A expression, which may offer new therapy options for IVDD. THE TRANSLATIONAL POTENTIAL OF THIS ARTICLE The findings provide a new therapeutic target for the treatment of IVDD and show a novel light on the probable mechanism of PRP and the function of Sema3A in the progression of IVDD.
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Affiliation(s)
- Jie Huang
- Orthopedics of TCM Senior Department, The Sixth Medical Center of PLA General Hospital, Beijing, 100048, China
- Department of Orthopedics, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Shi-Lin Lian
- Orthopedics of TCM Senior Department, The Sixth Medical Center of PLA General Hospital, Beijing, 100048, China
| | - Jia-Heng Han
- Orthopedics of TCM Senior Department, The Sixth Medical Center of PLA General Hospital, Beijing, 100048, China
- Department of Orthopedics, School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Zheng-Cao Lu
- Orthopedics of TCM Senior Department, The Sixth Medical Center of PLA General Hospital, Beijing, 100048, China
- Department of Orthopedics, School of Medicine, Jinzhou Medical University, Jinzhou, 121001, China
| | - Yu Ding
- Orthopedics of TCM Senior Department, The Sixth Medical Center of PLA General Hospital, Beijing, 100048, China.
- Department of Orthopedics, School of Medicine, South China University of Technology, Guangzhou, 510006, China.
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Ohnishi T, Homan K, Fukushima A, Ukeba D, Iwasaki N, Sudo H. A Review: Methodologies to Promote the Differentiation of Mesenchymal Stem Cells for the Regeneration of Intervertebral Disc Cells Following Intervertebral Disc Degeneration. Cells 2023; 12:2161. [PMID: 37681893 PMCID: PMC10486900 DOI: 10.3390/cells12172161] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/24/2023] [Accepted: 08/26/2023] [Indexed: 09/09/2023] Open
Abstract
Intervertebral disc (IVD) degeneration (IDD), a highly prevalent pathological condition worldwide, is widely associated with back pain. Treatments available compensate for the impaired function of the degenerated IVD but typically have incomplete resolutions because of their adverse complications. Therefore, fundamental regenerative treatments need exploration. Mesenchymal stem cell (MSC) therapy has been recognized as a mainstream research objective by the World Health Organization and was consequently studied by various research groups. Implanted MSCs exert anti-inflammatory, anti-apoptotic, and anti-pyroptotic effects and promote extracellular component production, as well as differentiation into IVD cells themselves. Hence, the ultimate goal of MSC therapy is to recover IVD cells and consequently regenerate the extracellular matrix of degenerated IVDs. Notably, in addition to MSC implantation, healthy nucleus pulposus (NP) cells (NPCs) have been implanted to regenerate NP, which is currently undergoing clinical trials. NPC-derived exosomes have been investigated for their ability to differentiate MSCs from NPC-like phenotypes. A stable and economical source of IVD cells may include allogeneic MSCs from the cell bank for differentiation into IVD cells. Therefore, multiple alternative therapeutic options should be considered if a refined protocol for the differentiation of MSCs into IVD cells is established. In this study, we comprehensively reviewed the molecules, scaffolds, and environmental factors that facilitate the differentiation of MSCs into IVD cells for regenerative therapies for IDD.
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Affiliation(s)
- Takashi Ohnishi
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan; (T.O.); (K.H.); (A.F.); (N.I.)
| | - Kentaro Homan
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan; (T.O.); (K.H.); (A.F.); (N.I.)
| | - Akira Fukushima
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan; (T.O.); (K.H.); (A.F.); (N.I.)
| | - Daisuke Ukeba
- Department of Orthopedic Surgery, Hokkaido University Hospital, Sapporo 060-8648, Japan;
| | - Norimasa Iwasaki
- Department of Orthopedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan; (T.O.); (K.H.); (A.F.); (N.I.)
| | - Hideki Sudo
- Department of Advanced Medicine for Spine and Spinal Cord Disorders, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
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Kawabata S, Akeda K, Yamada J, Takegami N, Fujiwara T, Fujita N, Sudo A. Advances in Platelet-Rich Plasma Treatment for Spinal Diseases: A Systematic Review. Int J Mol Sci 2023; 24:ijms24087677. [PMID: 37108837 PMCID: PMC10145581 DOI: 10.3390/ijms24087677] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 04/29/2023] Open
Abstract
Spinal diseases are commonly associated with pain and neurological symptoms, which negatively impact patients' quality of life. Platelet-rich plasma (PRP) is an autologous source of multiple growth factors and cytokines, with the potential to promote tissue regeneration. Recently, PRP has been widely used for the treatment of musculoskeletal diseases, including spinal diseases, in clinics. Given the increasing popularity of PRP therapy, this article examines the current literature for basic research and emerging clinical applications of this therapy for treating spinal diseases. First, we review in vitro and in vivo studies, evaluating the potential of PRP in repairing intervertebral disc degeneration, promoting bone union in spinal fusion surgeries, and aiding in neurological recovery from spinal cord injury. Second, we address the clinical applications of PRP in treating degenerative spinal disease, including its analgesic effect on low back pain and radicular pain, as well as accelerating bone union during spinal fusion surgery. Basic research demonstrates the promising regenerative potential of PRP, and clinical studies have reported on the safety and efficacy of PRP therapy for treating several spinal diseases. Nevertheless, further high-quality randomized controlled trials would be required to establish clinical evidence of PRP therapy.
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Affiliation(s)
- Soya Kawabata
- Department of Orthopaedic Surgery, School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan
| | - Koji Akeda
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu 514-8507, Japan
| | - Junichi Yamada
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu 514-8507, Japan
| | - Norihiko Takegami
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu 514-8507, Japan
| | - Tatsuhiko Fujiwara
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu 514-8507, Japan
| | - Nobuyuki Fujita
- Department of Orthopaedic Surgery, School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan
| | - Akihiro Sudo
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu 514-8507, Japan
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Liu Z, Zhu J, Liu H, Fu C. Natural products can modulate inflammation in intervertebral disc degeneration. Front Pharmacol 2023; 14:1150835. [PMID: 36874009 PMCID: PMC9978229 DOI: 10.3389/fphar.2023.1150835] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 02/08/2023] [Indexed: 02/18/2023] Open
Abstract
Intervertebral discs (IVDs) play a crucial role in maintaining normal vertebral anatomy as well as mobile function. Intervertebral disc degeneration (IDD) is a common clinical symptom and is an important cause of low back pain (LBP). IDD is initially considered to be associated with aging and abnormal mechanical loads. However, over recent years, researchers have discovered that IDD is caused by a variety of mechanisms, including persistent inflammation, functional cell loss, accelerated extracellular matrix decomposition, the imbalance of functional components, and genetic metabolic disorders. Of these, inflammation is thought to interact with other mechanisms and is closely associated with the production of pain. Considering the key role of inflammation in IDD, the modulation of inflammation provides us with new options for mitigating the progression of degeneration and may even cause reversal. Many natural substances possess anti-inflammatory functions. Due to the wide availability of such substances, it is important that we screen and identify natural agents that are capable of regulating IVD inflammation. In fact, many studies have demonstrated the potential clinical application of natural substances for the regulation of inflammation in IDD; some of these have been proven to have excellent biosafety. In this review, we summarize the mechanisms and interactions that are responsible for inflammation in IDD and review the application of natural products for the modulation of degenerative disc inflammation.
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Affiliation(s)
- Zongtai Liu
- Department of Spine Surgery, First Hospital of Jilin University, Changchun, China.,Department of Orthopedics, Affiliated Hospital of Beihua University, Jilin, China
| | - Jiabo Zhu
- Department of Orthopedics, Affiliated Hospital of Beihua University, Jilin, China
| | - Haiyan Liu
- Department of Orthopedics, Baicheng Central Hospital, Baicheng, China
| | - Changfeng Fu
- Department of Spine Surgery, First Hospital of Jilin University, Changchun, China
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Feng M, Wei Y, Wei H, Wang Y, Zhang Y, Miron RJ, Wang Y. Effect of relative centrifugal force on the biological properties of liquid platelet-rich fibrin produced via horizontal centrifugation. Clin Oral Investig 2023; 27:399-409. [PMID: 36242639 DOI: 10.1007/s00784-022-04745-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 10/01/2022] [Indexed: 01/28/2023]
Abstract
OBJECTIVES Platelet-rich fibrin (PRF) in liquid form has shown advantages in tissue engineering including acting as injectable fillers and drug carriers. However, few studies have investigated the best relative centrifugal force (RCF) for preparing liquid PRF. The aim of the present study was to find out optimal centrifugation force for preparing liquid PRF. MATERIALS AND METHODS Liquid PRF was prepared using horizontal centrifugation (liquid H-PRF) with RCF ranging from 100 g, 300 g, 500 g, to 700 g for 8 min. The volume, weight, solidification time, and tensile properties were subsequently investigated. Scanning electron microscopy (SEM) and rheologic tests were carried out to investigate the microstructure and rheologic properties of liquid H-PRF after natural polymerization. The total number, concentration, and distribution of cells within each liquid H-PRF was evaluated by complete blood count (CBC) analysis and hematoxylin-eosin staining. RESULTS As RCF values increased, the volume and weight of liquid H-PRF both increased accordingly. SEM images revealed that as the centrifugal force increased, the fibrin bundles became thinner with a denser fibrin network, and rheologic tests revealed improved mechanical properties. CBC analysis demonstrated that 500 g group had the highest number of leukocytes and neutrophils, whereas 100 g group yielded the highest concentration of leukocytes and platelets. Furthermore, histological analysis suggests that cells obtained by 500 g for 8 min were most evenly distributed in liquid H-PRF. CONCLUSIONS In summary, the present study provided insights into the contents of liquid H-PRF prepared at different centrifugation forces, enabling clinicians to choose proper centrifugation forces based on their needs. CLINICAL RELEVANCE The present findings provide theoretical basis for clinical choice of liquid H-PRF protocol from mechanical, cell contents, and histological aspects.
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Affiliation(s)
- Mengge Feng
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yan Wei
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Hongjiang Wei
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yunxiao Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Yufeng Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China
- Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Richard J Miron
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Yulan Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
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A Hyaluronan and Platelet-Rich Plasma Hydrogel for Mesenchymal Stem Cell Delivery in the Intervertebral Disc: An Organ Culture Study. Int J Mol Sci 2021; 22:ijms22062963. [PMID: 33803999 PMCID: PMC7999916 DOI: 10.3390/ijms22062963] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/11/2021] [Accepted: 03/13/2021] [Indexed: 12/18/2022] Open
Abstract
The purpose of the present pilot study was to evaluate the effect of a hydrogel composed of hyaluronic acid (HA) and platelet-rich plasma (PRP) as a carrier for human mesenchymal stem cells (hMSCs) for intervertebral disc (IVD) regeneration using a disc organ culture model. HA was mixed with batroxobin (BTX) and PRP to form a hydrogel encapsulating 1 × 106 or 2 × 106 hMSCs. Bovine IVDs were nucleotomized and filled with hMSCs suspended in ~200 μL of the PRP/HA/BTX hydrogel. IVDs collected at day 0 and nucleotomized IVDs with no hMSCs and/or hydrogel alone were used as controls. hMSCs encapsulated in the hydrogel were also cultured in well plates to evaluate the effect of the IVD environment on hMSCs. After 1 week, tissue structure, scaffold integration, hMSC viability and gene expression of matrix and nucleus pulposus (NP) cell markers were assessed. Histological analysis showed a better preservation of the viability of the IVD tissue adjacent to the gel in the presence of hMSCs (~70%) compared to the hydrogel without hMSCs. Furthermore, disc morphology was maintained, and the hydrogel showed signs of integration with the surrounding tissues. At the gene expression level, the hydrogel loaded with hMSCs preserved the normal metabolism of the tissue. The IVD environment promoted hMSC differentiation towards a NP cell phenotype by increasing cytokeratin-19 (KRT19) gene expression. This study demonstrated that the hydrogel composed of HA/PRP/BTX represents a valid carrier for hMSCs being able to maintain a good cell viability while stimulating cell activity and NP marker expression.
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Effect of Platelet-Rich Plasma on Intervertebral Disc Degeneration In Vivo and In Vitro: A Critical Review. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:8893819. [PMID: 33299533 PMCID: PMC7704139 DOI: 10.1155/2020/8893819] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 01/26/2023]
Abstract
Intervertebral disc degeneration (IDD) is a globally occurring disease that represents a significant cause of socioeconomic problems. Currently, the main method for treating IDD is surgery, including discectomy and vertebral fusion. Several in vitro experiments demonstrated that platelet-rich plasma (PRP) could stimulate cell proliferation and extracellular matrix regeneration. Additionally, in vivo experiments have proven that PRP injection could restore intervertebral disc height. Clinical studies demonstrated that PRP injection could significantly relieve patient pain. However, further studies are still required to clarify the roles of PRP in IDD prevention and treatment. This review is aimed at summarizing and critically analyzing the current evidence regarding IDD treatment with PRP.
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12
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Straum OK. The optimal platelet concentration in platelet-rich plasma for proliferation of human cells in vitro-diversity, biases, and possible basic experimental principles for further research in the field: A review. PeerJ 2020; 8:e10303. [PMID: 33240635 PMCID: PMC7668201 DOI: 10.7717/peerj.10303] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND In the last decades, several in vitro studies have tested the effect of plate-rich plasma (PRP) on the proliferation of human cells in search of a wizard for the use of PRP in a clinical setting. However, the literature displays striking differences regarding this question despite the relatively similar experimental design. The aim of this review is twofold: describe and explain this diversity and suggest basic principles for further in vitro studies in the field. The optimal platelet concentration in vivo will also be discussed. METHODS A search in mainly EMBASE and PubMed was performed to identify in vitro studies that investigate the effect of different PRP concentrations on human cell proliferation. The assessment of bias was based on the principles of "Good Cell Culture Practice" and adapted. RESULTS In total, 965 in vitro studies were detected. After the initial screening, 31 studies remained for full-text screening. A total of 16 studies met the criteria of final inclusion and appeared relatively sound. In general, the studies state consistently that PRP stimulates the proliferation of the human cell. Two main types of experimental techniques were detected: 1. The Fixed PRP Concentration Group using a fixed PRP concentration throughout the experiment, which leads to a substantial decrease in nutrition available at higher concentrations. 2. The Fixed PRP Volume Group using a fixed PRP-to-media ratio (Vol/Vol) throughout the experiment. A general tendency was observed in both groups: when the PRP to media ratio increased (Vol/Vol), the proliferation rate decreased. Further, The Low Leukocyte group observed a substantial higher optimal PRP concentration than The High leukocyte group. No prominent tendencies was seen regarding anticoagulants, activation methods, and blood donor (age or sex). DISCUSSION Two major biases regarding optimal proliferation in vitro is pointed out: 1. Too high PRP volume. It is speculated that the techniques used by some studies led to an adverse growth condition and even cell starvation at higher concentrations. 2. High leukocyte levels. Reduced proliferation rate due to proinflammatory substances released during degranulation of leukocytes. CONCLUSIONS The two main biases may explain the bell-shaped effect of PRP and the detrimental effects at higher platelet concentrations observed in several studies. These biases may also explain the low optimal PRP concentration observed in some studies. Even if one universal optimal PRP concentration does not exist, the review indicates that PRP concentrations in the upper parts of the scale is optimal or at least beneficial. Finally, following basic experimental principles are suggested. 1: The PRP/media ratio (Vol/Vol) should be kept as constant. 2: The PRP/media ratio should provide a sufficient nutrition supply, that is, PRP ≤ 10% (Vol/Vol). 3: The cell density per well (cells/mL) should be defined. 4: Leukocyte level should be kept low, preferable depleted (< 0.1 PLT/µL).
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Affiliation(s)
- Olav K. Straum
- Faculty of Humanities, Social Sciences, and Education, UiT The Arctic University of Norway, Tromsø, Norway
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13
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The Platelet Concentrates Therapy: From the Biased Past to the Anticipated Future. Bioengineering (Basel) 2020; 7:bioengineering7030082. [PMID: 32751638 PMCID: PMC7552713 DOI: 10.3390/bioengineering7030082] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 07/25/2020] [Accepted: 07/28/2020] [Indexed: 12/23/2022] Open
Abstract
The ultimate goal of research on platelet concentrates (PCs) is to develop a more predictable PC therapy. Because platelet-rich plasma (PRP), a representative PC, was identified as a possible therapeutic agent for bone augmentation in the field of oral surgery, PRP and its derivative, platelet-rich fibrin (PRF), have been increasingly applied in a regenerative medicine. However, a rise in the rate of recurrence (e.g., in tendon and ligament injuries) and adverse (or nonsignificant) clinical outcomes associated with PC therapy have raised fundamental questions regarding the validity of the therapy. Thus, rigorous evidence obtained from large, high-quality randomized controlled trials must be presented to the concerned regulatory authorities of individual countries or regions. For the approval of the regulatory authorities, clinicians and research investigators should understand the real nature of PCs and PC therapy (i.e., adjuvant therapy), standardize protocols of preparation (e.g., choice of centrifuges and tubes) and clinical application (e.g., evaluation of recipient conditions), design bias-minimized randomized clinical trials, and recognize superfluous brand competitions that delay sound progress. In this review, we retrospect the recent past of PC research, reconfirm our ultimate goals, and discuss what will need to be done in future.
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Liu Y, Li Y, Nan LP, Wang F, Zhou SF, Feng XM, Liu H, Zhang L. Insights of stem cell-based endogenous repair of intervertebral disc degeneration. World J Stem Cells 2020; 12:266-276. [PMID: 32399135 PMCID: PMC7202923 DOI: 10.4252/wjsc.v12.i4.266] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/26/2020] [Accepted: 04/05/2020] [Indexed: 02/06/2023] Open
Abstract
Low back pain has become more prevalent in recent years, causing enormous economic burden for society and government. Common therapies used in clinics including conservative treatment and surgery can only relieve pain. Subsequent cell-based treatment such as mesenchymal stem cell transplantation poses problems such as short duration of therapeutic effect and tumorigenesis. Recently, the discovery and identification of stem cell niche and stem/progenitor cells in intervertebral disc bring increased attention to endogenous repair strategy. Therefore, we review the studies involving endogenous repair strategy and present the characteristics and current status of this treatment. Meanwhile, we also discuss the strategy and perspective of endogenous repair strategy in future.
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Affiliation(s)
- Yang Liu
- Department of Orthopedics, West China Hospital of Sichuan University, Chengdu 610000, Sichuan Province, China
- Department of Orthopedics, Dalian Medical University, Dalian 116000, Liaoning Province, China
| | - Yan Li
- Department of Oncology, The Affiliated Cancer Hospital, School of Medicine, UESTC, Chengdu 610000, Sichuan Province, China
| | - Li-Ping Nan
- Department of Orthopedics, Dalian Medical University, Dalian 116000, Liaoning Province, China
| | - Feng Wang
- Department of Orthopedics, Dalian Medical University, Dalian 116000, Liaoning Province, China
| | - Shi-Feng Zhou
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Yangzhou 225000, Jiangsu Province, China
| | - Xin-Min Feng
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Yangzhou 225000, Jiangsu Province, China
| | - Hao Liu
- Department of Orthopedics, West China Hospital of Sichuan University, Chengdu 610000, Sichuan Province, China
| | - Liang Zhang
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Yangzhou 225000, Jiangsu Province, China
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15
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Xue Y, Su X, Jiang M, Yu Z, Yang H, Qin L, Giannoudis PV, Guo JJ. Pure platelet-rich plasma facilitates the repair of damaged cartilage and synovium in a rabbit hemorrhagic arthritis knee model. Arthritis Res Ther 2020; 22:68. [PMID: 32248827 PMCID: PMC7133006 DOI: 10.1186/s13075-020-02155-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 03/16/2020] [Indexed: 12/15/2022] Open
Abstract
Objective Hemorrhagic arthritis (HA) is a common disease of the musculoskeletal system caused by hemorrhage in the joints, leading to damages in the synovium and cartilage. Pure platelet-rich plasma (P-PRP) has been recently demonstrated to have anti-inflammatory and regenerative potential attributed to the various cytokines and growth factors that it contains. The aim of this study was to investigate the efficacy of P-PRP for the treatment of patients with mild and severe HA. Methods Autologous blood was withdrawn from the New Zealand rabbits and injected into their left and right knees to establish the HA models. The injection was performed once a week and repeated for 8 weeks to establish the mild HA models and for 16 weeks to establish the severe HA models. One hundred microliters of P-PRP was injected into the left HA knees, and the same volume of sterile 0.9% saline was injected into the corresponding right knees. MRI examination, H&E staining, and toluidine blue staining were respectively performed to evaluate the histological difference of synovium and cartilage between the P-PRP treated and untreated mild and severe groups. Normal knees were set as the control group. Results Pathological changes including tissue color, joint effusion, and synovium inflammation in the mild treated group were less severe compared to the other three experimental groups based on gross observation. The difference of joint cavity diameter between the mild treated and untreated groups was 2.67 ± 0.75 mm (95%CI, 1.20–4.14 mm), which was significantly larger than that between the severe treated and untreated groups (1.50 mm ± 0.48, 95%CI, 0.56–2.44 mm) (mean difference in joint cavity, 1.17 ± 0.32 mm; 95%CI, 0.49–1.85 mm; P < 0.01). MRI examination showed the synovitis and bone marrow edema were less severe in the treated groups compared to the corresponding untreated groups. H&E staining of the synovium suggested that the inflammation was much less and the cell number was much smaller in the treated than in the untreated HA knees in regard to both the mild and severe groups. The mean difference of cell number between the mild treated and untreated groups was 307.40 ± 14.23 (95%CI, 241.54–343.26; P < 0.001), which was 699.20 ± 82.80 (95%CI, 508.26–890.14; P < 0.001) between the severe treated and untreated groups. H&E staining and toluidine blue staining of the cartilage exhibited an obvious amelioration of inflammation and cartilage matrix loss after being treated with P-PRP for both groups, especially the mild group. Conclusions P-PRP was effective for the treatment of HA by inhibiting the development of synovitis and cartilage matrix loss in the affected joints, which was particularly obvious in the early-stage HA. This study supports the view that there is a great potential of P-PRP to be considered and used as a non-operative treatment for hemorrhagic arthritis at its early stage.
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Affiliation(s)
- Yulun Xue
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, People's Republic of China
| | - Xinlin Su
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, People's Republic of China
| | - Miao Jiang
- Department of Hematology, National Clinical Research Center for Hematologic Disease of PR China, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China.,Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health of PR China, Suzhou, People's Republic of China
| | - Ziqiang Yu
- Department of Hematology, National Clinical Research Center for Hematologic Disease of PR China, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China.,Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health of PR China, Suzhou, People's Republic of China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, People's Republic of China
| | - Ling Qin
- Department of Orthopaedics & Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Peter V Giannoudis
- Leeds Orthopaedic Trauma Sciences, Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), Leeds University, Leeds, UK
| | - Jiong Jiong Guo
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, People's Republic of China. .,Department of Hematology, National Clinical Research Center for Hematologic Disease of PR China, The First Affiliated Hospital of Soochow University, Suzhou, People's Republic of China.
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16
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Bise S, Dallaudiere B, Pesquer L, Pedram M, Meyer P, Antoun MB, Hocquelet A, Silvestre A. Comparison of interlaminar CT-guided epidural platelet-rich plasma versus steroid injection in patients with lumbar radicular pain. Eur Radiol 2020; 30:3152-3160. [DOI: 10.1007/s00330-020-06733-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 01/27/2020] [Accepted: 02/07/2020] [Indexed: 12/24/2022]
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17
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Injectable Hydrogel Combined with Nucleus Pulposus-Derived Mesenchymal Stem Cells for the Treatment of Degenerative Intervertebral Disc in Rats. Stem Cells Int 2019; 2019:8496025. [PMID: 31737077 PMCID: PMC6815539 DOI: 10.1155/2019/8496025] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 08/17/2019] [Indexed: 12/12/2022] Open
Abstract
Stem cell-based tissue engineering in treating intervertebral disc (IVD) degeneration is promising. An appropriate cell scaffold can maintain the viability and function of transplanted cells. Injectable hydrogel has the potential to be an appropriate cell scaffold as it can mimic the condition of the natural extracellular matrix (ECM) of nucleus pulposus (NP) and provide binding sites for cells. This study was aimed at investigating the effect of injectable hydrogel-loaded NP-derived mesenchymal stem cells (NPMSC) for the treatment of IVD degeneration (IDD) in rats. In this study, we selected injectable 3D-RGD peptide-modified polysaccharide hydrogel as a cell transplantation scaffold. In vitro, the biocompatibility, microstructure, and induced differentiation effect on NPMSC of the hydrogel were studied. In vivo, the regenerative effect of hydrogel-loaded NPMSC on degenerated NP in a rat model was evaluated. The results showed that NPMSC was biocompatible and able to induce differentiation in hydrogel in vivo. The disc height index (almost 87%) and MRI index (3313.83 ± 227.79) of the hydrogel-loaded NPMSC group were significantly higher than those of other groups at 8 weeks after injection. Histological staining and immunofluorescence showed that the hydrogel-loaded NPMSC also partly restored the structure and ECM content of degenerated NP after 8 weeks. Moreover, the hydrogel could support long-term NPMSC survival and decrease cell apoptosis rate of the rat IVD. In conclusion, injectable hydrogel-loaded NPMSC transplantation can delay the level of IDD and promote the regeneration of the degenerative IVD in the rat model.
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18
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Hua J, Shen N, Wang J, Tao Y, Li F, Chen Q, Zhou X. Small Molecule-Based Strategy Promotes Nucleus Pulposus Specific Differentiation of Adipose-Derived Mesenchymal Stem Cells. Mol Cells 2019; 42:661-671. [PMID: 31564076 PMCID: PMC6776160 DOI: 10.14348/molcells.2019.0098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 08/06/2019] [Accepted: 08/21/2019] [Indexed: 12/28/2022] Open
Abstract
Adipose tissue-derived mesenchymal stem cells (ADSCs) are promising for regenerating degenerated intervertebral discs (IVDs), but the low efficiency of nucleus pulposus (NP)-specific differentiation limits their clinical applications. The Sonic hedgehog (Shh) signaling pathway is important in NP-specific differentiation of ADSCs, and Smoothened Agonist (SAG) is a highly specific and effective agonist of Shh signaling. In this study, we proposed a new differentiation strategy with the use of the small molecule SAG. The NP-specific differentiation and extracellular matrix (ECM) synthesis of ADSCs were measured in vitro , and the regenerative effects of SAG pretreated ADSCs in degenerated IVDs were verified in vivo . The results showed that the combination of SAG and transforming growth factor-β3 (TGF-β3) is able to increase the ECM synthesis of ADSCs. In addition, the gene and protein expression levels of NP-specific markers were increased by treatment with SAG and TGF-β3. Furthermore, SAG pretreated ADSCs can also improve the disc height, water content, ECM content, and structure of degenerated IVDs in vivo . Our new differentiation scheme has high efficiency in inducing NP-specific differentiation of ADSCs and is promising for stem cell-based treatment of degenerated IVDs.
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Affiliation(s)
- Jianming Hua
- Department of Radiology, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009,
China
| | - Ning Shen
- Department of Rheumatology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016,
China
| | - Jingkai Wang
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009,
China
- Orthopedics Research Institute of Zhejiang University, Hangzhou 310009,
China
| | - Yiqing Tao
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009,
China
- Orthopedics Research Institute of Zhejiang University, Hangzhou 310009,
China
| | - Fangcai Li
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009,
China
- Orthopedics Research Institute of Zhejiang University, Hangzhou 310009,
China
| | - Qixin Chen
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009,
China
- Orthopedics Research Institute of Zhejiang University, Hangzhou 310009,
China
| | - Xiaopeng Zhou
- Department of Orthopedics Surgery, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009,
China
- Orthopedics Research Institute of Zhejiang University, Hangzhou 310009,
China
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19
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Melo BAGD, Luzo ÂCM, Lana JFSD, Santana MHA. Centrifugation Conditions in the L-PRP Preparation Affect Soluble Factors Release and Mesenchymal Stem Cell Proliferation in Fibrin Nanofibers. Molecules 2019; 24:molecules24152729. [PMID: 31357568 PMCID: PMC6696255 DOI: 10.3390/molecules24152729] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/15/2019] [Accepted: 07/19/2019] [Indexed: 11/16/2022] Open
Abstract
Leukocyte and platelet-rich plasma (L-PRP) is an autologous product that when activated forms fibrin nanofibers, which are useful in regenerative medicine. As an important part of the preparation of L-PRP, the centrifugation parameters may affect the release of soluble factors that modulate the behavior of the cells in the nanofibers. In this study, we evaluated the influences of four different centrifugation conditions on the concentration of platelets and leukocytes in L-PRP and on the anabolic/catabolic balance of the nanofiber microenvironment. Human adipose-derived mesenchymal stem cells (h-AdMSCs) were seeded in the nanofibers, and their viability and growth were evaluated. L-PRPs prepared at 100× g and 100 + 400× g released higher levels of transforming growth factor (TGF)-β1 and platelet-derived growth factor (PDGF)-BB due to the increased platelet concentration, while inflammatory cytokines interleukin (IL)-8 and tumor necrosis factor (TNF)-α were more significantly released from L-PRPs prepared via two centrifugation steps (100 + 400× g and 800 + 400× g) due to the increased concentration of leukocytes. Our results showed that with the exception of nanofibers formed from L-PRP prepared at 800 + 400× g, all other microenvironments were favorable for h-AdMSC proliferation. Here, we present a reproducible protocol for the standardization of L-PRP and fibrin nanofibers useful in clinical practices with known platelet/leukocyte ratios and in vitro evaluations that may predict in vivo results.
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Affiliation(s)
- Bruna Alice Gomes de Melo
- Department of Engineering of Materials and Bioprocesses, School of Chemical Engineering, University of Campinas, 13083-852, Campinas, SP, Brazil
| | | | | | - Maria Helena Andrade Santana
- Department of Engineering of Materials and Bioprocesses, School of Chemical Engineering, University of Campinas, 13083-852, Campinas, SP, Brazil.
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