Osteoarthritis: Molecular Pathways and Novel Therapeutic Strategies

A special issue of Biomedicines (ISSN 2227-9059). This special issue belongs to the section "Gene and Cell Therapy".

Deadline for manuscript submissions: closed (20 December 2024) | Viewed by 3080

Special Issue Editors


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Department of Medicine and Ageing Sciences University G. d’Annunzio, Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti, Italy
Interests: autophagy; apoptosis; myokines; oxidative stress; inflammation; aging
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Guest Editor
Orthopaedic and Traumatology Unit, Department of Medicine and Science of Aging, University G. "d'Annunzio" of Chieti-Pescara, Chieti, Italy
Interests: osteoarthritis; cartilage biology; orthopedic research; regenerative medicine; sports

Special Issue Information

Dear Colleagues,

Osteoarthritis (OA) is a prevalent and degenerative joint disorder characterized by the progressive deterioration of joint cartilage and the surrounding structures. It is the most common form of arthritis and often affects weight-bearing joints such as the knees, hips. Osteoarthritis (OA) exhibits a spectrum of clinical phenotypes, reflecting the heterogeneous nature of this prevalent joint disorder: (1) Chronic Pain Phenotype (Emphasizes central mechanisms, such as central sensitization; Characterized by persistent pain, potentially influencing treatment strategies); (2) Inflammatory Phenotype (Marked by elevated levels of inflammatory biomarkers); (3) Metabolic Syndrome Phenotype (Exhibits a high prevalence of obesity, diabetes, and metabolic disturbances); (4) Bone and Cartilage Metabolism Phenotype (Involves alterations in local tissue metabolism); (5) Mechanical Overload Phenotype (Primarily characterized by varus malalignment and medial compartment disease); (6) Minimal Joint Disease Phenotype (Characterized by minor clinical symptoms with slow progression). These distinct phenotypes, characterized by varying patterns of symptoms, disease progression, and treatment responses, play a pivotal role in tailoring effective interventions for individuals affected by OA. Recognizing and categorizing individuals based on these phenotypes holds promise for refining therapeutic strategies and improving overall outcomes in the diverse landscape of osteoarthritis. This Special Issue, will include a selection of original articles and reviews aimed at expanding our awareness and new insights into molecular and cellular mechanisms, key signaling pathways and novel therapeutic strategies in the treatment of osteoarthritis disease.

Dr. Antonia Patruno
Dr. Teresa Paolucci
Dr. Mirko Pesce
Dr. Andrea Pantalone
Guest Editors

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Keywords

  • osteoarthritis
  • cartilage
  • pain
  • orthopedics
  • rehabilitation

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Published Papers (3 papers)

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Research

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12 pages, 7537 KiB  
Article
Comparison of Biocompatibility of 3D-Printed Ceramic and Titanium in Micropig Ankle Hemiarthroplasty
by Si-Wook Lee, Donghyun Lee, Junsik Kim, Sanghyun An, Chul-Hyun Park, Jung-Min Lee, Chang-Jin Yon and Yu-Ran Heo
Biomedicines 2024, 12(12), 2696; https://doi.org/10.3390/biomedicines12122696 - 26 Nov 2024
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Abstract
Background: Ankle arthritis is a common degenerative disease that progresses as cartilage damage in the lower tibia and upper talus progresses, resulting in loss of joint function. In addition to typical arthritis, there is also structural bone loss in the talus due to [...] Read more.
Background: Ankle arthritis is a common degenerative disease that progresses as cartilage damage in the lower tibia and upper talus progresses, resulting in loss of joint function. In addition to typical arthritis, there is also structural bone loss in the talus due to diseases such as talar avascular necrosis. Total talus replacement surgery is the procedure of choice in end-stage ankle arthritis and consists of a tibial, talar component and an insert. However, in cases of severe cartilage and bone damage to the talar bone with less damage to the tibial cartilage, a talar component hemiarthroplasty may be considered. Although the application of total talus replacement surgery using ceramics has been studied, reports on the application of metal 3D printing technology are limited. We aimed to investigate the feasibility of partial talar components using ceramic and titanium 3D printing technology in terms of biocompatibility and stability through animal experiments. Methods: Preoperative 3D CT was acquired and converted to STL files to fabricate a partial talus component for ankle hemiarthroplasty using ceramic and titanium. Six minipigs with an average age of 17 months were implanted with three ceramic (C-group) and three titanium talar components (T-group) in the hind limb ankle joint. The surgery was performed under anesthesia in a sterile operating room and was performed by two experienced foot and ankle specialist orthopedic surgeons. Blood analysis and CT were performed before surgery and every month for 3 months after surgery to assess the extent of inflammatory response and physical stability, sacrifices were performed 3 months after surgery, and H&E staining and micro-CT analysis were performed to compare histological biocompatibility. A grading score was calculated to semi-quantitative assess and compare the two groups. Results: In the postsurgical evaluation, blood analysis revealed that both groups had increased white blood cell counts on the postoperative day after surgery. The white blood cell count increased more in the titanium group (1.85-fold) than in the ceramic group (1.45-fold). After 3 months, all values normalized. During the study, CT analysis confirmed that all artificial samples were displaced from their initial positions. In micro-CT analysis, the adhesive tissue score of the ceramic artificial sample was better than that of the titanium sample (average threshold = 3027.18 ± 405.92). In histologic and grading scores for the inflammatory reactions, the average inflammation indices of the ceramic and titanium groups were 2.0 and 1.21, respectively. Also, the average grade score confirmed based on the results of fibrous tissue proliferation and new blood vessels was 18.4 in the ceramic application group and 12.3 in the titanium application group. Conclusions: In conclusion, both titanium and ceramics have excellent biocompatibility for artificial joints, and ceramic materials can be used as novel artificial joints. Further research on the strength and availability of these ceramics is required. Full article
(This article belongs to the Special Issue Osteoarthritis: Molecular Pathways and Novel Therapeutic Strategies)
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10 pages, 433 KiB  
Article
Evaluating Synergistic Effects of Hyaluronic Acid, Human Umbilical Cord-Derived Mesenchymal Stem Cells, and Growth Hormones in Knee Osteoarthritis: A Multi-Arm Randomized Trial
by Ismail Hadisoebroto Dilogo, Anissa Feby Canintika, Bernadus Riyan Hartanto, Jacub Pandelaki and Irsa Gagah Himantoko
Biomedicines 2024, 12(10), 2332; https://doi.org/10.3390/biomedicines12102332 - 14 Oct 2024
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Abstract
Background: Knee osteoarthritis (OA) significantly affects quality of life and imposes economic burdens due to its prevalence and the disability it causes. The efficacy of current treatments is limited to alleviating the symptoms, and they cannot be used for regenerative purposes. This study [...] Read more.
Background: Knee osteoarthritis (OA) significantly affects quality of life and imposes economic burdens due to its prevalence and the disability it causes. The efficacy of current treatments is limited to alleviating the symptoms, and they cannot be used for regenerative purposes. This study aims to evaluate the efficacy and safety of combining hyaluronic acid (HA), human umbilical cord-derived mesenchymal stem cells (hUC-MSCs), and synthetic human growth hormone (somatotropin) in the treatment of knee OA, assessing pain relief, functional improvement, and cartilage regeneration. Methods: A four-arm, double-blind randomized trial was conducted with 51 knees from 28 subjects aged ≥50 with primary knee OA. The treatments involved were HA alone, HA with hUC-MSCs, HA with somatotropin, and a combination of all three. Efficacy was measured through the International Knee Documentation Committee (IKDC) score, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and visual analog score (VAS), and MRI T2 mapping of cartilage was conducted on pre-implantation at the 6th and 12th month. Results: All treatment arms showed improvements in the VAS and WOMAC scores over 12 months, suggesting some pain relief and functional improvement. However, MRI T2 mapping showed no significant cartilage regeneration across the groups. Conclusions: While the combined use of HA, hUC-MSCs, and somatotropin improved symptoms of knee OA, it did not enhance cartilage regeneration significantly. This study highlights the potential of these combinations for symptom management but underscores the need for further research to optimize these therapies for regenerative outcomes. Full article
(This article belongs to the Special Issue Osteoarthritis: Molecular Pathways and Novel Therapeutic Strategies)
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Review

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17 pages, 1195 KiB  
Review
Comparative Analysis of Osteoarthritis Therapeutics: A Justification for Harnessing Retrospective Strategies via an Inverted Pyramid Model Approach
by Quinn T. Ehlen, Jacob Jahn, Ryan C. Rizk and Thomas M. Best
Biomedicines 2024, 12(11), 2469; https://doi.org/10.3390/biomedicines12112469 - 28 Oct 2024
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Abstract
In this review, we seek to explore two distinct approaches to the clinical management of OA: a prospective approach, addressing primarily one’s genetic predisposition to OA and generating early intervention options, and the retrospective approach, aimed at halting or reversing OA progression post-symptom [...] Read more.
In this review, we seek to explore two distinct approaches to the clinical management of OA: a prospective approach, addressing primarily one’s genetic predisposition to OA and generating early intervention options, and the retrospective approach, aimed at halting or reversing OA progression post-symptom onset. The clinical management of OA remains challenging, largely due to the limited availability of preventative treatments and failure of existing therapies to modify or reverse the underlying pathophysiology. The prospective approach involves the identification of genetic markers associated with OA and utilizes in vitro and in vivo models to characterize the underlying disease mechanism. Further, this approach focuses on identifying genetic predispositions and unique molecular subtypes of OA to develop individualized treatment plans based on patient genotypes. While the current literature investigating this strategy has been notable, this approach faces substantial challenges, such as extensive time burdens and utilization of extensive genetic testing that may not be economically feasible. Additionally, there is questionable justification for such extensive investigations, given OA’s relatively low mortality rates and burden when contrasted with diseases like specific forms of cancer, which rely heavily on the prospective approach. Alternatively, the retrospective approach primarily focuses on intervention following symptom onset and aims to utilize novel therapeutics to slow or reverse the inflammatory cascade typically seen in disease progression. These treatments, like Hippo pathway inhibitors, have shown initial promise in halting OA progression and alleviating OA symptomology by modulating cellular processes to preserve articular cartilage. In comparison to the prospective approach, the retrospective strategy is likely more cost-effective, more widely applicable, and does not necessitate thorough and invasive genetic screening. However, this approach must still be weighed against the typical natural history of disease progression, which frequently results in total knee arthroplasty and unacceptable outcomes for 15–20% of patients. From a comparative analysis of these two approaches, this review argues that the retrospective strategy, with ideally lower time and economic burden and greater accessibility, offers a more reasonable and effective solution in the context of OA management. Using a similar approach to other management of chronic diseases, we suggest an “Inverted Pyramid” model algorithm, a structured research and development regimen that prioritizes generating widely effective therapies first, with subsequent refinement of treatments based on the development of patient resistance to these therapies. We argue that this strategy may reduce the need for total knee arthroplasty while improving patient outcomes and accessibility. Full article
(This article belongs to the Special Issue Osteoarthritis: Molecular Pathways and Novel Therapeutic Strategies)
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