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The process of establishing the cartilage model. Different color masks used to distinguish healthy cartilage from cartilage defects by setting the threshold are shown. Illustrating the injury of the whole layer of cartilage and partial cartilage defects (a, b). The cartilage of the knee joint was divided into six regions with different color masks, namely, lateral femoral condyle (LF), femoral intercondylar (T), medial femoral condyle (MF), lateral tibia condyle (LT), medial tibia condyle (MT), and patella (P), and the knee cartilage model was established (c, d). The parameters of the model were measured (e) (for example, in the lateral femoral condyle, the thickness, volume, and surface of cartilage defect were 1.88 mm, 121.12 mm³, and 206.37 mm², respectively. The volume of healthy cartilage was 3374.92 mm³).
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Background:
Numerous reports confirmed the safety and clinical efficacy of autologous adipose-derived stromal vascular fractions (SVF), which have recently been used to treat osteoarthritis (OA). However, there is still no consensus as to whether SVF can promote cartilage regeneration. Herein, the purpose of our study was to evaluate the effective...
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Abstract Background Intra-articular injection of mesenchymal stromal cells (MSCs) with immunomodulatory features and their paracrine secretion of regenerative factors proposed a noninvasive therapeutic modality for cartilage regeneration in knee osteoarthritis (KOA). Methods Total number of 40 patients with KOA enrolled in two groups. Twenty patien...
Citations
... Moreover, the clinical evaluation showed significant improvements in all scores adopted, with stable results up to two years. Y. Zhang et al.[31] found that, in all regions, the thickness and volume of cartilage defect and the volume of healthy cartilage were improved to some extent in the test group, especially the medial femoral condyle (MF) and medial tibial condyle (MT). 11 ± 19.93 mm3 in MT, respectively. ...
Osteoarthritis (OA) is a degenerative joint disease that affects millions of people worldwide. The disease frequently results in discomfort, edema, and stiffness, which can impair movement, make everyday tasks challenging, and even render a person disabled. Since osteoarthritis is presently incurable, researchers are working hard to find new treatments. Adult Mesenchymal stem cells (MSCs) are the most common stem cells used in the therapy of OA in clinical trials. They are simple to extract for researchers from bone marrow or adipose. Depending on the kind of tissue that contains them, MSCs can develop into cartilage, bone, muscle, tendon, ligaments, or fat. For this reason, scientists are researching MSCs in OA stem cell therapies. According to research, MSCs produce substances that promote healing and reduce pain. According to some research, they may aid in reducing pain, swelling, and loss of motion when injected into a joint. Researchers conduct an examination of articles that are in accordance with the issue to be studied. Articles used in literature review are obtained through the database of international journal providers through PubMed, we investigated clinical studies and discussed what happened in these clinical studies and the extent of the effectiveness of stem cells in treatment of osteoarthritis. Different patients have responded differently to this therapy. While some people have experienced pain others have not. Research is still required to determine whether stem cell therapies for OA are effective and why some people respond to the therapy more favorably than others.
... According to a previous survey, approximately 9.6% of men and 18% of women over the age of 60 years suffer from symptomatic OA worldwide [2]. Currently, many treatment modalities for knee OA, such as lifestyle modification and pharmaceuticals, are advocated [3]. However, advanced knee OA eventually requires joint surgery as the disease progresses [2,4,5]. ...
Background:
To investigate the efficacy and safety of autologous micro-fragmented adipose tissue (MF-AT) for improving joint function and cartilage repair in patients with knee osteoarthritis.
Methods:
From March 2019 to December 2020, 20 subjects (40 knees) between 50 and 65 years old suffering from knee osteoarthritis were enrolled in the study and administered a single injection of autologous MF-A. The data of all patients were prospectively collected. The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), knee society score (KSS), hospital for special surgery (HSS) score, visual analogue score (VAS) pain score, changes in cartilage Recht grade on magnetic resonance imaging (MRI) and adverse events were analyzed before and 3, 6, 9, 12 and 18 months after injection.
Results:
The WOMAC, VAS, KSS and HSS scores at 3, 6, 9, 12 and 18 months after injection were improved compared with those before injection (p < 0.05). There was no significant difference in WOMAC scores between 9 and 12 months after injection (p > 0.05), but the WOMAC score 18 months after injection was worse than that at the last follow-up (p < 0.05). The VAS, KSS and HSS scores 9, 12 and 18 months after injection were worse than those at the last follow-up (p < 0.05). The Recht score improvement rate was 25%. No adverse events occurred during the follow-up.
Conclusions:
Autologous MF-AT improves knee function and relieves pain with no adverse events. However, the improved knee function was not sustained, with the best results occurring 9-12 months after injection and the cartilage regeneration remaining to be investigated.
Background
Hip osteoarthritis (HOA) is a prevalent degenerative joint disease with various treatment approaches. Biological agents, such as bone-marrow derived stem cells (BM-MSC) therapy, have recently been proposed as a treatment option in the management of HOA.
Purpose
We sought to further analyze the use of BM-MSC therapy by investigating the following questions. What is the standard preparation and practice? Does a dose response exist between stem cell therapy and clinical outcome? Does BM-MSC therapy alone produce effective clinical outcomes?
Methods
We conducted a scoping review using the Methodological Expectations of Cochrane Intervention Reviews Manual and the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines for scoping reviews. A comprehensive search of PubMed, Embase, Cochrane CENTRAL, Scopus, SPORTDiscus, Cumulative Index to Nursing and Allied Health Literature, and Web of Science Core Collection was performed in June 2023 of studies using exclusively BM-MSC injections for the treatment of HOA. Study characteristic, injection preparation and dosage, clinical outcome measures, and adverse effect data were extracted and interpreted by 3 reviewers.
Results
Seven studies with a total of 72 patients met the inclusion criteria. Clinical outcome following intra-articular injection of BM-MSCs was measured using the numerical pain scale, the Western Ontario and McMaster Universities Osteoarthritis Index, the visual analogue scale, and other scores, all of which showed reduction in pain and increase in functional ability across studies.
Conclusions
This scoping review found that the efficacy of BM-MSC therapy alone in the treatment of HOA appeared beneficial, improving clinical outcomes in each study. All 7 studies used “low-dose” injections with variable follow-up times; thus, a clear dose–response relationship cannot be drawn. Future studies using high doses and analyzing long-term effects of BM-MSC injections in HOA are needed.
Purpose
Mesenchymal stem cells (MSCs) present a valuable treatment option for knee osteoarthritis with promising results. The purpose of the present study was to systematically review the clinical and functional outcomes following mesenchymal stem cell application focusing on early to moderate knee osteoarthritis.
Methods
A systematic search was done using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines in Pubmed, Scopus, Web of Science, and Cochrane Library databases. All Studies published between 2017 and March 2023 on patients treated with single mesenchymal stem cell injection for Kellgren-Lawrence grade I—III knee osteoarthritis reported on clinical and functional outcomes were included.
Results
Twelve articles comprising 539 patients and 576 knees treated with a single intraarticular injection of MSCs for knee osteoarthritis were included in the current systematic review. In eligible studies, the reported outcomes were improved concerning patient-reported outcomes measures, knee function, pain relief, and quality of patient's life.
Conclusion
Based on high-level evidence studies, single intraarticular injection of MSCs is a safe, reliable, and effective treatment option for Kellgren-Lawrence grade I—III knee osteoarthritis. However, the lack of homogeneity in the included studies and the variance in MSCs sources and preparations should be noted.
Level of evidence
III.
Background:
The stromal vascular fraction (SVF) has been widely explored in a number of therapeutic applications in several specialties. Its therapeutic potential is being increasingly demonstrated, although its mechanism of action is still unclear.
Objective:
To evaluate the quality of studies reporting on clinical applications of SVF.
Method:
This is a systematic literature review that followed the PRISMA guidelines with the search of the studies from December 1, 2012, to December 1, 2022, in the following databases: MEDLINE, LILACS and EMBASE. The level of evidence of the studies was assessed using the GRADE system, and the rigor used in the publication of the results was assessed in relation to adherence to the guidelines indicated by the EQUATOR Network Group. The CLINIC - STRA-SVF reporting guideline was developed after the completion of this systematic review.
Results:
A total of 538 articles were found, and 77 articles were selected after reading the titles and abstracts and removing duplicates. Then, 15 studies were removed for not meeting the inclusion criteria, leaving 62 studies. The CLINIC - STRA-SVF was developed and consists of 33 items and two tables.
Conclusion:
There is scientific evidence, although mostly with a low level of evidence, that the use of SVF in clinical applications is safe and effective. The information published in these studies should be standardized, and the CLINIC - STRA-SVF reporting guideline proposed in this study may assist in the design, conduct, recording and reporting of clinical trials and others clinical studies involving the SVF.
Objectives
Diabetes mellitus (DM) is a complex metabolic disease that results from impaired insulin secreting pancreatic β-cells or insulin resistance. Although available medications help control the disease, patients suffer from its complications. Therefore, finding effective therapeutic approaches to treat DM is a priority. Adipose Derived Stem Cells (ADSCs) based therapy is a promising strategy in various regenerative medicine applications, but its systematic translational use is still somewhat out of reach. This review is aimed at clarifying achievements as well as challenges facing the application of ADSCs for the treatment of DM, with a special focus on the mechanisms involved.Methods
Literature searches were carried out on “Scopus”, “PubMed” and “Google Scholar” up to September 2022 to find relevant articles in the English language for the scope of this review.ResultsRecent evidence showed a significant role of ADSC therapies in DM by ameliorating insulin resistance and hyperglycemia, regulating hepatic glucose metabolism, promoting β cell function and regeneration, and functioning as a gene delivery tool. In addition, ADSCs could improve diabetic wound healing by promoting collagen deposition, inhibiting inflammation, and enhancing angiogenesis.Conclusion
Overall, this literature review revealed the great clinical implications of ADSCs for translating into the clinical setting for the treatment of diabetes. However, further large-scale and controlled studies are needed to overcome challenges and confirm the safety and optimal therapeutic scheme before daily clinical application.
Objective
Assess the efficacy of single and multiple intra-articular injections of autologous adipose-derived stem cells (ASCs) and adipose-derived stromal vascular fraction (ADSVF) for the treatment of knee osteoarthritis (OA).
Methods
We conducted a thorough and systematic search of several databases, including PubMed, Embase, Web of Science, Cochrane Library, and ClinicalTrials.gov, to identify relevant studies. The included studies were randomized controlled trials (RCTs) that involved single or multiple intra-articular injections of autologous ASCs or ADSVF for the treatment of patients with knee osteoarthritis, without any additional treatment, and compared to either placebo or hyaluronic acid.
Results
A total of seven RCTs were analyzed in this study. The results of the meta-analysis show that compared to the control group, both single and multiple intra-articular injections of ASCs or ADSVF demonstrated superior pain relief in the short term (Z = 3.10; P < 0.0001 and Z = 4.66; P < 0.00001) and significantly improved function (Z = 2.61; P < 0.009 and Z = 2.80; P = 0.005). Furthermore, MRI assessment showed a significant improvement in cartilage condition compared to the control group. (Z = 8.14; P < 0.000001 and Z = 5.58; P < 0.00001).
Conclusions
In conclusion, in osteoarthritis of the knee, single or multiple intra-articular injections of autologous ASCs or ADSVF have shown significant pain improvement and safety in the short term in the absence of adjuvant therapy. Significant improvements in cartilage status were also shown. A larger sample size of randomized controlled trials is needed for direct comparison of the difference in effect between single and multiple injections.
Despite decades of research efforts and multiple clinical trials aimed at discovering efficacious disease-modifying osteoarthritis (OA) drugs (DMOAD), we still do not have a drug that shows convincing scientific evidence to be approved as an effective DMOAD. It has been suggested these DMOAD clinical trials were in part unsuccessful since eligibility criteria and imaging-based outcome evaluation were solely based on conventional radiography. The OA research community has been aware of the limitations of conventional radiography being used as a primary imaging modality for eligibility and efficacy assessment in DMOAD trials. An imaging modality for DMOAD trials should be able to depict soft tissue and osseous pathologies that are relevant to OA disease progression and clinical manifestations of OA. Magnetic resonance imaging (MRI) fulfills these criteria and advances in technology and increasing knowledge regarding imaging outcomes likely should play a more prominent role in DMOAD clinical trials. In this perspective article, we will describe MRI-based tools and analytic methods that can be applied to DMOAD clinical trials with a particular emphasis on knee OA. MRI should be the modality of choice for eligibility screening and outcome assessment. Optimal MRI pulse sequences must be chosen to visualize specific features of OA.
