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Gundogdu K, Kılıc Erkek O, Gundogdu G, Sayin D, Abban Mete G. Anti-inflammatory effects of sericin and swimming exercise in treating experimental Achilles tendinopathy in rat. Appl Physiol Nutr Metab 2024; 49:501-513. [PMID: 38284362 DOI: 10.1139/apnm-2023-0377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
The aim of this study was to assess the effectiveness of combining sericin with swimming exercise as a treatment for type-I collagenase-induced Achilles tendinopathy (AT) in rats, with a focus on inflammatory cytokines. An experimental AT model was established using type-I collagenase in male Sprague-Dawley rats, categorized into five groups: Group 1 (Control + Saline), Group 2 (AT), Group 3 (AT + exercise), Group 4 (AT + sericin), and Group 5 (AT + sericin + exercise). Intratendinous sericin administration (0.8 g/kg/mL) took place from days 3 to 6, coupled with 30 min daily swimming exercise sessions (5 days/week, 4 weeks). Serum samples were analyzed using ELISA for tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-10 (IL-10), and total antioxidant-oxidant status (TAS-TOS), alongside histopathological and immunohistochemical assessments of Achilles tendon samples. Elevated TNF-α and IL-1β and decreased IL-10 levels were evident in Group 2; Of these, TNF-α and IL-1β were effectively reduced and IL-10 increased across all treatment groups, particularly groups 4 and 5. Serum TAS was notably lower in Group 2 and significantly increased in Group 5 compared to Group 2. Histopathologically, Group 2 displayed severe degeneration, irregular fibers, and round cell nuclei, while Group 5 exhibited decreased degeneration and spindle-shaped fibers. The Bonar score increased in Group 2 and decreased in groups 4 and 5. Collagen type-I alpha-1 (Col1A1) expression was notably lower in Group 2 (P = 0.001) and significantly increased in groups 4 and 5 compared to Group 2 (P = 0.011 and 0.028, respectively). This study underscores the potential of sericin and swimming exercises in mitigating inflammation and oxidative stress linked to AT pathogenesis, presenting a promising combined therapeutic strategy.
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Affiliation(s)
- Koksal Gundogdu
- Department of Orthopedics and Traumatology, Denizli State Hospital, Denizli, Turkey
| | - Ozgen Kılıc Erkek
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Gulsah Gundogdu
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Dilek Sayin
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Gulcin Abban Mete
- Department of Histology and Embryology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
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2
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Gundogdu G, Tasci SY, Gundogdu K, Kapakin KAT, Demirkaya AK, Nalci KA, Gundogdu M, Hacimuftuoglu A, Abd El-Aty AM. A combination of omega-3 and exercise reduces experimental Achilles tendinopathy induced with a type-1 collagenase in rats. Appl Physiol Nutr Metab 2023; 48:62-73. [PMID: 36458821 DOI: 10.1139/apnm-2021-0801] [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] [Indexed: 12/05/2022]
Abstract
This study aimed to evaluate the effectiveness of omega-3 supplementation with exercise in a collagenase-induced Achilles tendinopathy (AT) rat model. Experimental groups (healthy control (HC), AT, exercise (Ex), omega-3 (W), and Ex+W) were randomly allocated. After a week of adaptation, oral omega-3 was initiated for 8 weeks (5 days/week). The exercise groups performed treadmill running for 30 min/day (5 days/week, 20 m/min, 8 weeks) following one week of adaptation (10 m/min, 15 min/day). Matrix metalloproteinase-13 (MMP-13), interleukin-1 beta (IL-1β), tumor necrosis factor-alpha (TNF-α), and total antioxidant-oxidant status (TAS) levels were determined in serum samples. Tendon samples were obtained for biomechanical, histopathological, and immunohistochemical assessments. Ultimate tensile force, yield force, stiffness values, collagen type-I alpha 1 expression, and serum TAS significantly decreased (P < 0.05) in AT vs. HC. These values and expression significantly increased in the Ex+W group vs. AT. Serum MMP-13, IL-1β, and TNF-α levels decreased in all treatment groups vs. AT. The most significant decrease was found in the Ex+W group (P < 0.01). Histopathologically, the improvement in degeneration was statistically significant in the Ex+W group (P < 0.05). Immunohistochemically, MMP-13, IL-1β, TNF-α, and nitric oxide synthase-2 expression was decreased in all treatment groups vs. AT. In conclusion, omega-3 and exercise might be recommended in AT patients.
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Affiliation(s)
- Gulsah Gundogdu
- Department of Physiology, Faculty of Medicine, Pamukkale University, Denizli 20100, Turkey
| | - Seymanur Yilmaz Tasci
- Department of Physiology, Faculty of Medicine, Atatürk University, Erzurum 25240, Turkey
| | - Koksal Gundogdu
- Department of Orthopedics and Traumatology, Denizli State Hospital, Denizli 20010, Turkey
| | - Kubra Asena Terim Kapakin
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, Atatürk University, Erzurum 20240, Turkey
| | - Alper Kursat Demirkaya
- Department of Food Processing, Vocational School, Bilecik Seyh Edebali University, Bilecik 11230, Turkey
| | - Kemal Alp Nalci
- Department of Pharmacy, Faculty of Pharmacy, Van Yüzüncü Yıl University, Van 65080, Turkey
| | - Mustafa Gundogdu
- Department of Prosthetic Dentistry, Faculty of Dentistry, Izmır Democracy University, İzmir 35140, Turkey
| | - Ahmet Hacimuftuoglu
- Department of Medical Pharmacy, Faculty of Medicine, Atatürk University, Erzurum 25240, Turkey
| | - A M Abd El-Aty
- Department of Medical Pharmacy, Faculty of Medicine, Atatürk University, Erzurum 25240, Turkey.,Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
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3
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Poenaru D, Sandulescu MI, Cinteza D. Biological effects of extracorporeal shockwave therapy in tendons: A systematic review. Biomed Rep 2022; 18:15. [PMID: 36684664 PMCID: PMC9845689 DOI: 10.3892/br.2022.1597] [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: 09/24/2022] [Accepted: 11/30/2022] [Indexed: 12/30/2022] Open
Abstract
Extracorporeal shockwave therapy was initially used for kidney stone disintegration and its application was then extended to calcific tendinitis. The therapeutic field expanded and included numerous types of tendinopathies, from shoulder to plantar fascia. The clinical benefits were documented in trials and the effects and mechanisms were studied on models including animal and human tendons. The present systematic review outlines a large spectrum of biological effects. First, an optimal dose is adapted for each species and each tendon; exceeding the optimal dose may lead to structural injury. Furthermore, the biological effects may be grouped into neovascularization induction, cellularity and extracellular matrix changes, metalloprotease and cytokine modulation, as well as lubricin production. As a result, the remodeled tendon displays improved biomechanical properties to resist stress.
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Affiliation(s)
- Daniela Poenaru
- Department of Rehabilitation, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania,Correspondence to: Dr Daniela Poenaru, Department of Rehabilitation, Carol Davila University of Medicine and Pharmacy, 37 Dionisie Lupu Street, 020021 Bucharest, Romania
| | - Miruna Ioana Sandulescu
- Doctoral School, Clinical Pharmacology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Delia Cinteza
- Department of Rehabilitation, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
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4
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Wuerfel T, Schmitz C, Jokinen LLJ. The Effects of the Exposure of Musculoskeletal Tissue to Extracorporeal Shock Waves. Biomedicines 2022; 10:biomedicines10051084. [PMID: 35625821 PMCID: PMC9138291 DOI: 10.3390/biomedicines10051084] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/01/2022] [Accepted: 05/04/2022] [Indexed: 12/14/2022] Open
Abstract
Extracorporeal shock wave therapy (ESWT) is a safe and effective treatment option for various pathologies of the musculoskeletal system. Many studies address the molecular and cellular mechanisms of action of ESWT. However, to date, no uniform concept could be established on this matter. In the present study, we perform a systematic review of the effects of exposure of musculoskeletal tissue to extracorporeal shock waves (ESWs) reported in the literature. The key results are as follows: (i) compared to the effects of many other forms of therapy, the clinical benefit of ESWT does not appear to be based on a single mechanism; (ii) different tissues respond to the same mechanical stimulus in different ways; (iii) just because a mechanism of action of ESWT is described in a study does not automatically mean that this mechanism is relevant to the observed clinical effect; (iv) focused ESWs and radial ESWs seem to act in a similar way; and (v) even the most sophisticated research into the effects of exposure of musculoskeletal tissue to ESWs cannot substitute clinical research in order to determine the optimum intensity, treatment frequency and localization of ESWT.
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5
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The effect of surgery on patellar tendinopathy: Novel use of MRI questions the exploitability of the rat collagenase model to humans. Knee 2019; 26:1182-1191. [PMID: 31706694 DOI: 10.1016/j.knee.2019.10.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 10/20/2019] [Accepted: 10/22/2019] [Indexed: 02/02/2023]
Abstract
BACKGROUND patellar tendinopathy is an overuse condition most commonly affecting jumping athletes. Surgery is reserved for refractory cases; however, it lacks high level clinical evidence and basic science to support its use. The purpose of this study was to determine the biomechanical and histological response of surgical excision on patellar tendinopathy in the rat collagenase tendinopathy model and correlate MRI findings. METHODS Forty-eight Long Evans rats were divided into three groups: i) no patellar tendinopathy with surgical excision, ii) patella tendinopathy with surgical excision, and iii) patellar tendinopathy with no surgical excision. Endpoints included histology, mechanical testing, and MRI pre- and post-surgical intervention at one and four weeks. RESULTS No difference in failure load or histological grading was seen between the groups at all time points. MRIs showed initial loss of tendon continuity followed by complete healing with elongated and thickened tendons in all groups. CONCLUSIONS While other research has reported immunohistochemistry and histology of collagenase-induced tendinopathy may be correlated with human pathogenesis, the novel MRI findings from our study suggest that the rat collagenase tendinopathy surgical model may be limited when extrapolating to humans. Further work is needed to determine if any correlation exists between the dosing, location, and animal effect of the collagenase injection model with MRI findings. This is needed before any collagenase model can be used to determine the effect of surgery in the pathogenic response to patella tendinopathy.
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6
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Freedman BR, Rodriguez AB, Hillin CD, Weiss SN, Han B, Han L, Soslowsky LJ. Tendon healing affects the multiscale mechanical, structural and compositional response of tendon to quasi-static tensile loading. J R Soc Interface 2019; 15:rsif.2017.0880. [PMID: 29467258 DOI: 10.1098/rsif.2017.0880] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 01/29/2018] [Indexed: 12/20/2022] Open
Abstract
Tendon experiences a variety of multiscale changes to its extracellular matrix during mechanical loading at the fascicle, fibre and fibril levels. For example, tensile loading of tendon increases its stiffness, with organization of collagen fibres, and increases cell strain in the direction of loading. Although applied macroscale strains correlate to cell and nuclear strains in uninjured tendon, the multiscale response during tendon healing remains unknown and may affect cell mechanosensing and response. Therefore, this study evaluated multiscale structure-function mechanisms in response to quasi-static tensile loading in uninjured and healing tendons. We found that tendon healing affected the macroscale mechanical and structural response to mechanical loading, evidenced by decreases in strain stiffening and collagen fibre realignment. At the micro- and nanoscales, healing resulted in increased collagen fibre disorganization, nuclear disorganization, decreased change in nuclear aspect ratio with loading, and decreased indentation modulus compared to uninjured tendons. Taken together, this work supports a new concept of nuclear strain transfer attenuation during tendon healing and identifies several multiscale properties that may contribute. Our work also provides benchmarks for the biomechanical microenvironments that tendon cells may experience following cell delivery therapies.
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Affiliation(s)
- Benjamin R Freedman
- McKay Orthopedic Research Laboratory, University of Pennsylvania, 110 Stemmler Hall, 3450 Hamilton Walk, Philadelphia, PA 19104-6081, USA
| | - Ashley B Rodriguez
- McKay Orthopedic Research Laboratory, University of Pennsylvania, 110 Stemmler Hall, 3450 Hamilton Walk, Philadelphia, PA 19104-6081, USA
| | - Cody D Hillin
- McKay Orthopedic Research Laboratory, University of Pennsylvania, 110 Stemmler Hall, 3450 Hamilton Walk, Philadelphia, PA 19104-6081, USA
| | - Stephanie N Weiss
- McKay Orthopedic Research Laboratory, University of Pennsylvania, 110 Stemmler Hall, 3450 Hamilton Walk, Philadelphia, PA 19104-6081, USA
| | - Biao Han
- Department of Biomedical Engineering, Drexel University, Philadelphia, PA, USA
| | - Lin Han
- Department of Biomedical Engineering, Drexel University, Philadelphia, PA, USA
| | - Louis J Soslowsky
- McKay Orthopedic Research Laboratory, University of Pennsylvania, 110 Stemmler Hall, 3450 Hamilton Walk, Philadelphia, PA 19104-6081, USA
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7
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Rinella L, Marano F, Paletto L, Fraccalvieri M, Annaratone L, Castellano I, Fortunati N, Bargoni A, Berta L, Frairia R, Catalano MG. Extracorporeal shock waves trigger tenogenic differentiation of human adipose-derived stem cells. Connect Tissue Res 2018; 59:561-573. [PMID: 29316809 DOI: 10.1080/03008207.2018.1424147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSES Incomplete tendon healing impairs the outcome of tendon ruptures and tendinopathies. Human Adipose-derived Stem Cells (hASCs) are promising for tissue engineering applications. Extracorporeal Shock Waves (ESW) are a leading choice for the treatment of several tendinopathies. In this study, we investigated the effects of ESW treatment and tenogenic medium on the differentiation of hASCs into tenoblast-like cells. MATERIALS AND METHODS hASCs were treated with ESW generated by a piezoelectric device and tenogenic medium. Quantitative real-time PCR was used to check the mRNA expression levels of tenogenic transcription factors, extracellular matrix proteins, and integrins. Western blot and immunofluorescence were used to detect collagen 1 and fibronectin. Collagen fibers were evaluated by Masson staining. Calcium deposition was assessed by Alizarin Red staining. RESULTS The combined treatment improved the expression of the tendon transcription factors scleraxis and eyes absent 2, and of the extracellular matrix proteins fibronectin, collagen I, and tenomodulin. Cells acquired elongated and spindle shaped fibroblastic morphology; Masson staining revealed the appearance of collagen fibers. Finally, the combined treatment induced the expression of alpha 2, alpha 6, and beta 1 integrin subunits, suggesting a possible role in mediating ESW effects. CONCLUSIONS ESW in combination with tenogenic medium improved the differentiation of hASCs toward tenoblast-like cells, providing the basis for ESW and hASCs to be used in tendon tissue engineering.
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Affiliation(s)
- Letizia Rinella
- a Department of Medical Sciences , University of Turin , Turin , Italy
| | - Francesca Marano
- a Department of Medical Sciences , University of Turin , Turin , Italy
| | - Laura Paletto
- a Department of Medical Sciences , University of Turin , Turin , Italy
| | | | - Laura Annaratone
- a Department of Medical Sciences , University of Turin , Turin , Italy
| | | | - Nicoletta Fortunati
- c Oncological Endocrinology , AO Città della Salute e della Scienza di Torino , Turin , Italy
| | | | | | - Roberto Frairia
- a Department of Medical Sciences , University of Turin , Turin , Italy
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8
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Lee SY, Chieh HF, Lin CJ, Jou IM, Sun YN, Kuo LC, Wu PT, Su FC. Characteristics of Sonography in a Rat Achilles Tendinopathy Model: Possible Non-invasive Predictors of Biomechanics. Sci Rep 2017; 7:5100. [PMID: 28698601 PMCID: PMC5506063 DOI: 10.1038/s41598-017-05466-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 05/31/2017] [Indexed: 12/21/2022] Open
Abstract
The purpose of this study was to investigate the dynamic changes of histopathology, biomechanical properties, echo intensity, and ultrasound features in a collagenase-induced tendinopathy model of rat Achilles tendons, and to examine the associations among biomechanical properties, echo intensity, and ultrasound features. Forty-two rats received an ultrasound-guided collagenase injection on their left Achilles tendons, and needle puncture on the right ones as the control. At four, eight, and twelve weeks post-injury, the tendons were examined via measurements of their biomechanical properties, histopathological and ultrasonographic characteristics. The injured tendons showed significantly higher histopathological scores, lower Young’s modulus, and higher ultrasound feature scores than the those of control ones throughout the study period. Up to week 12, all injured tendons showed defective healing. The neovascularization score had a significant negative linear association with the failure stress and Young’s modulus. Maximum normalized echo intensity had a significant positive linear association with maximum strain. Therefore, neovascularization and maximum normalized echo intensity are associated with mechanically altered tendinopathic tendons. Non-invasive ultrasound methodology, including echo intensity and ultrasound feature scores, may provide useful information about biomechanical properties of tendinopathic tendons.
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Affiliation(s)
- Su-Ya Lee
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Hsiao-Feng Chieh
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan.,Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan
| | - Chien-Ju Lin
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan.,Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan
| | - I-Ming Jou
- Department of Orthopedics, E-Da Hospital, Kaohsiung, Taiwan.,Department of Orthopedics, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yung-Nien Sun
- Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan.,Department of Computer Science & Information Engineering, National Cheng Kung University, Tainan, Taiwan
| | - Li-Chieh Kuo
- Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan.,Department of Occupational Therapy, National Cheng Kung University, Tainan, Taiwan
| | - Po-Ting Wu
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan. .,Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan. .,Department of Orthopedics, College of Medicine, National Cheng Kung University, Tainan, Taiwan. .,Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| | - Fong-Chin Su
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan. .,Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan.
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9
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Experimental Diabetes Alters the Morphology and Nano-Structure of the Achilles Tendon. PLoS One 2017; 12:e0169513. [PMID: 28095484 PMCID: PMC5240962 DOI: 10.1371/journal.pone.0169513] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 12/19/2016] [Indexed: 01/21/2023] Open
Abstract
Although of several studies that associate chronic hyperglycemia with tendinopathy, the connection between morphometric changes as witnessed by magnetic resonance (MR) images, nanostructural changes, and inflammatory markers have not yet been fully established. Therefore, the present study has as a hypothesis that the Achilles tendons of rats with diabetes mellitus (DM) exhibit structural changes. The animals were randomly divided into two experimental groups: Control Group (n = 06) injected with a vehicle (sodium citrate buffer solution) and Diabetic Group (n = 06) consisting of rats submitted to intraperitoneal administration of streptozotocin. MR was performed 24 days after the induction of diabetes and images were used for morphometry using ImageJ software. Morphology of the collagen fibers within tendons was examined using Atomic Force microscopy (AFM). An increase in the dimension of the coronal plane area was observed in the diabetic group (8.583 ± 0.646 mm2/100g) when compared to the control group (4.823 ± 0.267 mm2/100g) resulting in a significant difference (p = 0.003) upon evaluating the Achilles tendons. Similarly, our analysis found an increase in the size of the transverse section area in the diabetic group (1.328 ± 0.103 mm2/100g) in comparison to the control group (0.940 ± 0.01 mm2/100g) p = 0.021. The tendons of the diabetic group showed great irregularity in fiber bundles, including modified grain direction and jagged junctions and deformities in the form of collagen fibrils bulges. Despite the morphological changes observed in the Achilles tendon of diabetic animals, IL1 and TNF-α did not change. Our results suggest that DM promotes changes to the Achilles tendon with important structural modifications as seen by MR and AFM, excluding major inflammatory changes.
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10
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Wei M, Liu Y, Li Z, Wang Z. Comparison of Clinical Efficacy Among Endoscopy-Assisted Radio-Frequency Ablation, Extracorporeal Shockwaves, and Eccentric Exercises in Treatment of Insertional Achilles Tendinosis. J Am Podiatr Med Assoc 2017; 107:11-16. [PMID: 27723374 DOI: 10.7547/14-146] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND We sought to compare clinical efficacy among endoscopy-assisted radio-frequency ablation under local anesthesia, extracorporeal shockwaves (ESWs), and eccentric exercises in treating insertional Achilles tendinosis. METHODS In this retrospective study, 78 patients diagnosed as having unilateral insertional Achilles tendinosis were enrolled. These participants underwent endoscopy-assisted radio-frequency ablation, ESWs, and eccentric calf muscle exercises between March 1, 2006, and February 28, 2011. Clinical efficacy was evaluated by the visual analog scale (VAS), the American Orthopaedic Foot and Ankle Society (AOFAS) ankle/hindfoot scale, and the Victorian Institute of Sport Assessment-Achilles (VISA-A) scale before and after treatment. RESULTS Before treatment, there were no statistically significant differences in VAS, AOFAS ankle/hindfoot scale, and VISA-A scale scores among the different groups (all P > .05). For the endoscopy and ESW groups, VAS, AOFAS ankle/hindfoot scale, and VISA-A scale scores were significantly improved after 18 months of treatment (all P < .05). The VAS, AOFAS ankle/hindfoot scale, and VISA-A scale scores in the endoscopy group were significantly higher than those in the ESW and eccentric exercise groups after 18 months of therapy (all P < .05). CONCLUSIONS Combined with synovectomy and tendon debridement, endoscopy-assisted radio-frequency ablation yields better clinical efficacy compared with ESWs in treating insertional Achilles tendinosis.
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Affiliation(s)
- Min Wei
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Yujie Liu
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Zhongli Li
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
| | - Zhigang Wang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing, China
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11
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Perucca Orfei C, Lovati AB, Viganò M, Stanco D, Bottagisio M, Di Giancamillo A, Setti S, de Girolamo L. Dose-Related and Time-Dependent Development of Collagenase-Induced Tendinopathy in Rats. PLoS One 2016; 11:e0161590. [PMID: 27548063 PMCID: PMC4993508 DOI: 10.1371/journal.pone.0161590] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 08/08/2016] [Indexed: 12/20/2022] Open
Abstract
Tendinopathy is a big burden in clinics and it represents 45% of musculoskeletal lesions. Despite the relevant social impact, both pathogenesis and development of the tendinopathy are still under-investigated, thus limiting the therapeutic advancement in this field. The purpose of this study was to evaluate the dose-dependent and time-related tissue-level changes occurring in a collagenase-induced tendinopathy in rat Achilles tendons, in order to establish a standardized model for future pre-clinical studies. With this purpose, 40 Sprague Dawley rats were randomly divided into two groups, treated by injecting collagenase type I within the Achilles tendon at 1 mg/mL (low dose) or 3 mg/mL (high dose). Tendon explants were histologically evaluated at 3, 7, 15, 30 and 45 days. Our results revealed that both the collagenase doses induced a disorganization of collagen fibers and increased the number of rounded resident cells. In particular, the high dose treatment determined a greater neovascularization and fatty degeneration with respect to the lower dose. These changes were found to be time-dependent and to resemble the features of human tendinopathy. Indeed, in our series, the acute phase occurred from day 3 to day 15, and then progressed towards the proliferative phase from day 30 to day 45 displaying a degenerative appearance associated with a very precocious and mild remodeling process. The model represents a good balance between similarity with histological features of human tendinopathy and feasibility, in terms of tendon size to create lesions and costs when compared to other animal models. Moreover, this model could contribute to improve the knowledge in this field, and it could be useful to properly design further pre-clinical studies to test innovative treatments for tendinopathy.
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Affiliation(s)
- Carlotta Perucca Orfei
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Arianna B. Lovati
- Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
| | - Marco Viganò
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Deborah Stanco
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
| | - Marta Bottagisio
- Cell and Tissue Engineering Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
- Department of Veterinary Medicine (DiMeVet), University of Milan, Milan, Italy
| | | | | | - Laura de Girolamo
- Orthopaedic Biotechnology Laboratory, IRCCS Galeazzi Orthopaedic Institute, Milan, Italy
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12
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Imai K, Ikoma K, Chen Q, Zhao C, An KN, Gay RE. Biomechanical and Histological Effects of Augmented Soft Tissue Mobilization Therapy on Achilles Tendinopathy in a Rabbit Model. J Manipulative Physiol Ther 2015; 38:112-8. [DOI: 10.1016/j.jmpt.2014.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 12/03/2014] [Accepted: 12/06/2014] [Indexed: 10/24/2022]
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13
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In vitro biomechanical evaluation of single impulse and repetitive mechanical shockwave devices utilized for spinal manipulative therapy. Ann Biomed Eng 2014; 42:2524-36. [PMID: 25326437 DOI: 10.1007/s10439-014-1115-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 09/06/2014] [Indexed: 01/07/2023]
Abstract
Mechanical shockwave therapy devices have been in clinical use for almost 40 years. While most often used to treat back pain, our understanding of their biomechanical performance is very limited. From biomechanical studies we know that biological tissue is viscoelastic and preferably excited around its resonance frequency. Targeting these frequencies has been the focus in extracorporeal shock wave lithotripsy, but these concepts are relatively new in orthopedic and rehabilitation therapies. The exact mechanism by which shockwave therapy acts is not known. Knowledge of the performance characteristics of these devices, correlated with clinical outcome studies, may lead to better patient selection, improvement of device functionality, and knowledge of the underlying working principals of therapy. The objectives of this study were to determine the ability of several commercial shockwave devices to achieve a desired thrust profile in a benchtop setting, determine the thrust profile in a clinical analog, and determine the influence of operator experience level on device performance. We conducted two different types of testing: (1) bench testing to evaluate the devices themselves, and (2) clinical equivalent testing to determine the influence of the operator. The results indicated a significant dependence of thrust output on the compliance of the test media. The Activator V-E device matched the ideal half-sine thrust profile to 94%, followed by the Impulse device (84%), the Activator IV/FS (74%), and the Activator II (48%). While most devices deviated from the ideal profile on the return path, the Impulse device exhibited a secondary peak. Moreover, the Activator V-E device provided evidence that the device performs consistently despite operator experience level. This has been a major concern in manual spinal manipulation. Based on our results, a hyper-flexible spine would receive a lower peak thrust force than a hypo-flexible spine at the same power setting. Furthermore, a hand-held operation further reduced the peak thrust force as it increased the system compliance. However, that influence was dissimilar for the different devices. Although controlled clinical trials are needed to determine the correlation between thrust profile and clinical outcome, already ongoing clinical studies indicate an improved patient satisfaction due to reduced treatment pain when devices are used with a thrust characteristic closer to an ideal sine wave.
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14
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Abstract
Tendinopathy is a debilitating musculoskeletal
condition which can cause significant pain and lead to complete rupture
of the tendon, which often requires surgical repair. Due in part
to the large spectrum of tendon pathologies, these disorders continue
to be a clinical challenge. Animal models are often used in this
field of research as they offer an attractive framework to examine
the cascade of processes that occur throughout both tendon pathology and
repair. This review discusses the structural, mechanical, and biological
changes that occur throughout tendon pathology in animal models,
as well as strategies for the improvement of tendon healing. Cite this article: Bone Joint Res 2014;3:193–202.
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Affiliation(s)
- M W Hast
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
| | - A Zuskov
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
| | - L J Soslowsky
- University of Pennsylvania, McKay Orthopaedic Research Laboratory, 424 Stemmler Hall 36th Street and Hamilton Walk, Philadelphia, 19104-6081, USA
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15
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Perez C, Chen H, Matula TJ, Karzova M, Khokhlova VA. Acoustic field characterization of the Duolith: measurements and modeling of a clinical shock wave therapy device. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2013; 134:1663-74. [PMID: 23927207 PMCID: PMC3745538 DOI: 10.1121/1.4812885] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 04/16/2013] [Accepted: 05/01/2013] [Indexed: 05/19/2023]
Abstract
Extracorporeal shock wave therapy (ESWT) uses acoustic pulses to treat certain musculoskeletal disorders. In this paper the acoustic field of a clinical portable ESWT device (Duolith SD1) was characterized. Field mapping was performed in water for two different standoffs of the electromagnetic head (15 or 30 mm) using a fiber optic probe hydrophone. Peak positive pressures at the focus ranged from 2 to 45 MPa, while peak negative pressures ranged from -2 to -11 MPa. Pulse rise times ranged from 8 to 500 ns; shock formation did not occur for any machine settings. The maximum standard deviation in peak pressure at the focus was 1.2%, indicating that the Duolith SD1 generates stable pulses. The results compare qualitatively, but not quantitatively with manufacturer specifications. Simulations were carried out for the short standoff by matching a Khokhlov-Zabolotskaya-Kuznetzov equation to the measured field at a plane near the source, and then propagating the wave outward. The results of modeling agree well with experimental data. The model was used to analyze the spatial structure of the peak pressures. Predictions from the model suggest that a true shock wave could be obtained in water if the initial pressure output of the device were doubled.
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Affiliation(s)
- Camilo Perez
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, 1013 NE 40th Street, Seattle, Washington 98105, USA
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