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Sarangi P, Senthilkumar MB, Amit S, Kumar N, Jayandharan GR. AAV mediated repression of Neat1 lncRNA combined with F8 gene augmentation mitigates pathological mediators of joint disease in haemophilia. J Cell Mol Med 2024; 28:e18460. [PMID: 38864710 PMCID: PMC11167708 DOI: 10.1111/jcmm.18460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 04/24/2024] [Accepted: 05/16/2024] [Indexed: 06/13/2024] Open
Abstract
Haemophilic arthropathy (HA), a common comorbidity in haemophilic patients leads to joint pain, deformity and reduced quality of life. We have recently demonstrated that a long non-coding RNA, Neat1 as a primary regulator of matrix metalloproteinase (MMP) 3 and MMP13 activity, and its induction in the target joint has a deteriorating effect on articular cartilage. In the present study, we administered an Adeno-associated virus (AAV) 5 vector carrying an short hairpin (sh)RNA to Neat1 via intra-articular injection alone or in conjunction with systemic administration of a capsid-modified AAV8 (K31Q) vector carrying F8 gene (F8-BDD-V3) to study its impact on HA. AAV8K31Q-F8 vector administration at low dose, led to an increase in FVIII activity (16%-28%) in treated mice. We further observed a significant knockdown of Neat1 (~40 fold vs. untreated injured joint, p = 0.005) in joint tissue of treated mice and a downregulation of chondrodegenerative enzymes, MMP3, MMP13 and the inflammatory mediator- cPLA2, in mice receiving combination therapy. These data demonstrate that AAV mediated Neat1 knockdown in combination with F8 gene augmentation can potentially impact mediators of haemophilic joint disease.
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Affiliation(s)
- Pratiksha Sarangi
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and TechnologyIndian Institute of Technology KanpurKanpurUttar PradeshIndia
| | - Mohankumar B. Senthilkumar
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and TechnologyIndian Institute of Technology KanpurKanpurUttar PradeshIndia
| | - Sonal Amit
- Department of PathologyAutonomous State Medical CollegeKanpurUttar PradeshIndia
| | - Narendra Kumar
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and TechnologyIndian Institute of Technology KanpurKanpurUttar PradeshIndia
| | - Giridhara R. Jayandharan
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and TechnologyIndian Institute of Technology KanpurKanpurUttar PradeshIndia
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Senthilkumar MB, Sarangi P, Amit S, Senguttuvan S, Kumar N, Jayandharan GR. Targeted delivery of miR125a-5p and human Factor VIII attenuates molecular mediators of hemophilic arthropathy. Thromb Res 2023; 231:8-16. [PMID: 37741049 DOI: 10.1016/j.thromres.2023.09.008] [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] [Received: 07/13/2023] [Revised: 08/31/2023] [Accepted: 09/13/2023] [Indexed: 09/25/2023]
Abstract
Hemophilic arthropathy (HA) due to repeated bleeding into the joint cavity is a major cause of morbidity in patients with hemophilia. The molecular mechanisms contributing to this condition are not well characterized. MicroRNAs (miRs) are known to modulate the phenotype of multiple joint diseases such as osteoarthritis (OA) and rheumatoid arthritis (RA). Since miR125a is known to modulate disease progression in OA and RA, we performed a targeted screen of miR125a-5p and its target genes in a murine model of chronic HA. A digital PCR analysis demonstrated significant downregulation of miR125a-5p (2-fold vs control joint). Further molecular evaluation revealed elevated expression of the immunological markers STAT1 (7.6-fold vs control joint) and TRAF6 (10.6 fold vs control joint), which are direct targets of miR125a-5p. We then studied the impact of targeted overexpression of miR125a-5p using an Adeno-associated virus (AAV) vector in modulating the molecular mediators of HA. AAV5-miR125a vectors were administered intra-articularly either alone or in combination with a low dose of AAV8-based human factor 8 (F8) gene in a murine model of HA. We observed significantly increased expression of miR125a-5p in AAV5-miR125a administered mice (~12 fold vs injured joint) or in combination with AAV8-F8 vectors (~44 fold vs injured joint). The activity assay revealed ~17 %-20 % FVIII levels in mice that received low dose liver-directed F8 gene therapy. Further immunohistochemical analysis, demonstrated a decrease in inflammatory markers (STAT1 and TRAF6) and cartilage-degrading matrix metalloproteinases (MMPs) 3, 9, 13 in the joints of treated animals. These data highlight the crucial role of miR125a-5p in the development of HA.
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Affiliation(s)
- Mohankumar B Senthilkumar
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, UP, India
| | - Pratiksha Sarangi
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, UP, India
| | - Sonal Amit
- Department of Pathology, Government Medical College, Jalaun (Orai), Uttar Pradesh, India
| | | | - Narendra Kumar
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, UP, India
| | - Giridhara R Jayandharan
- Laurus Center for Gene Therapy, Department of Biological Sciences and Bioengineering and Mehta Family Centre for Engineering in Medicine and Gangwal School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, UP, India.
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Pickering E, Trichilo S, Delisser P, Pivonka P. Beam theory for rapid strain estimation in the mouse tibia compression model. Biomech Model Mechanobiol 2022; 21:513-525. [PMID: 34982274 DOI: 10.1007/s10237-021-01546-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 12/06/2021] [Indexed: 11/27/2022]
Abstract
The mouse tibia compression model is a leading model for studying bone's mechanoadaptive response to load. In studying this mechanoadaptive response, (FE) modelling is often used to determine the stress/strain within the tibia. The development of such models can be challenging and computationally expensive. An alternate approach is to use continuum mechanics based analytical theories, such as beam theory (BT). However, applying BT to the mouse tibia requires the fibula be neglected, introducing error in the stress/strain distribution. While several studies have applied BT to the mouse tibia, no study has explored the accuracy of this approach. To address these questions, this work investigates the use of BT in determining stress/strain within the mouse tibia. By comparing BT against FE modelling, it was found that BT can accurately predict tibial stress/strain if correction factors are applied to account for the effect of the fibula. The 25, 37, 50 and 75% cross sections are studied. Focusing on the 37% cross section, without correction, BT can have errors of approximately 21.6%. With correction, this is reduced to 6.6%. Such correction factors are presented. The developed BT model is applicable in the diaphysis and distal metaphysis, where the assumptions of BT are valid. This work verifies BT for determining localised strains in a mouse tibia compression model. This is anticipated to provide efficiency dividends, allowing for high throughput modelling of the mouse tibia, advancing study of bone's mechanoadaptive response.
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Affiliation(s)
- Edmund Pickering
- School of Mechanical, Medical and Process Engineering, Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD, Australia.
- Centre for Biomedical Technologies , Queensland University of Technology (QUT), QLD, Brisbane , Australia.
| | - Silvia Trichilo
- Vincent's Department of Surgery, University of Melbourne, Melbourne, VIC, Australia
| | - Peter Delisser
- Veterinary Specialist Services, Brisbane, QLD, Australia
| | - Peter Pivonka
- School of Mechanical, Medical and Process Engineering, Centre for Biomedical Technologies, Queensland University of Technology (QUT), Brisbane, QLD, Australia
- Centre for Biomedical Technologies , Queensland University of Technology (QUT), QLD, Brisbane , Australia
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Pulles AE, van Vulpen LFD, Coeleveld K, Mastbergen SC, Schutgens REG, Lafeber FPJG. On-demand treatment with the iron chelator deferasirox is ineffective in preventing blood-induced joint damage in haemophilic mice. Haemophilia 2021; 27:648-656. [PMID: 34043875 PMCID: PMC8361985 DOI: 10.1111/hae.14328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/01/2021] [Accepted: 04/16/2021] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Early intervention in the devastating process of haemophilic arthropathy (HA) is highly desirable, but no disease-modifying therapy is currently available. Considering the pivotal role of iron in the development of HA, iron chelation is considered a promising therapeutic approach. A previous study in haemophilic mice demonstrated that treatment with the iron chelator deferasirox (DFX) 8 weeks before joint bleed induction, attenuated cartilage damage upon blood exposure. However, in haemophilia patients this approach is not opportune given the unpredictable occurrence of hemarthroses. AIM To evaluate the effectiveness of on-demand DFX treatment, initiated immediately after joint bleed induction. METHODS A joint bleed was induced in 66 factor VIII-deficient mice by infra-patellar needle puncture. Mice were randomly assigned to treatment with either placebo (drinking water) or DFX (dissolved in drinking water) throughout the study. Five weeks after joint bleed induction, inflammation and cartilage damage were assessed histologically. Joints of ten bleed naive haemophilic mice served as controls. RESULTS A joint bleed resulted in significant inflammation and cartilage damage in the blood-exposed joint compared with those of control animals, in both the placebo and DFX group (all p = <.05). No differences in tibiofemoral or patellar inflammation (p = .305 and p = .787, respectively) nor cartilage damage (p = .265 and p = .802, respectively) were found between the blood-exposed joints of both treatment groups. CONCLUSION On-demand treatment with DFX does not prevent joint damage following blood exposure in haemophilic mice. DFX seems unable to reach the joint in time to exert its effect before the irreversible harmful process is initiated.
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Affiliation(s)
- Astrid E. Pulles
- Department of Rheumatology & Clinical ImmunologyUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Lize F. D. van Vulpen
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Katja Coeleveld
- Department of Rheumatology & Clinical ImmunologyUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Simon C. Mastbergen
- Department of Rheumatology & Clinical ImmunologyUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Roger E. G. Schutgens
- Van CreveldkliniekUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
| | - Floris P. J. G. Lafeber
- Department of Rheumatology & Clinical ImmunologyUniversity Medical Center UtrechtUtrecht UniversityUtrechtThe Netherlands
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Kaneguchi A, Ozawa J, Minamimoto K, Yamaoka K. Formation process of joint contracture after anterior cruciate ligament reconstruction in rats. J Orthop Res 2021; 39:1082-1092. [PMID: 32667709 DOI: 10.1002/jor.24800] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/04/2020] [Accepted: 06/30/2020] [Indexed: 02/04/2023]
Abstract
Knee joint contracture is often induced by anterior cruciate ligament reconstruction (ACLR). However, the temporal and spatial arthrofibrotic changes following inflammatory events, which occur in parallel with the formation of joint contractures after ACLR, are unknown. This study aimed to reveal: (a) time-dependent changes in myogenic and arthrogenic contractures; and (b) the process of arthrofibrosis development after ACLR. ACLR was performed on knees of rats unilaterally. Passive ranges of motions (ROMs) before and after myotomy, as well as inflammatory and fibrotic reactions, were examined before and after the surgery at various periods up to 56 days. Both ROMs before and after myotomy exhibited their lowest value on day 7 and increased thereafter in a time-dependent manner; nevertheless, significant restrictions remained by day 56. Myotomy partially increased ROMs at all time points, indicating contribution of the myogenic component to ACLR-induced contracture. Inflammatory and fibrotic reactions peaked on day 7. Arthrofibrosis, characterized by the thickening of the joint capsule and the shortening of the synovial length, was established by day 7 and was not completely resolved by day 56. Our results indicate that: (a) both myogenic and arthrogenic contractures generated through ACLR develop maximally by day 7 after surgery and subside thereafter, but persist at least until day 56; and (b) arthrofibrosis is established by day 7 after surgery and is not completely resolved by day 56. These findings suggest that treatment and intervention for preventing joint contracture after ACLR should be performed within the first 7 days after surgery.
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Affiliation(s)
- Akinori Kaneguchi
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Higashi-Hiroshima, Hiroshima, Japan
| | - Junya Ozawa
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Higashi-Hiroshima, Hiroshima, Japan
| | - Kengo Minamimoto
- Major in Medical Engineering and Technology, Graduate School of Medical Technology and Health Welfare Sciences, Hiroshima International University, Higashi-Hiroshima, Hiroshima, Japan
| | - Kaoru Yamaoka
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Higashi-Hiroshima, Hiroshima, Japan
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Ribeiro AJT, Amorim FF, Soares BMD, Santana LA, Imoto AM. Functional and joint evaluation in a prospective cohort of patients with severe haemophilia. Haemophilia 2021; 27:314-320. [PMID: 33550664 DOI: 10.1111/hae.14243] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Arthropathy is the main morbidity of haemophilia. Periodic joint health assessment enables a better understanding of the limitations of these patients. OBJECTIVE To evaluate the functional and joint performance in patients with haemophilia at one-year follow-up, as well as its association with prophylactic treatment and attendance at scheduled consultations at a haemophilia treatment centre. METHODS This prospective cohort study included patients with severe haemophilia aged 7 years or more and treated at Fundação Hemocentro de Brasília, Brazil, from January 2014 to December 2018. The Hemophilia Joint Health Score and Functional Independence Score in Hemophilia were assessed at the first consultation and after a one-year follow-up. RESULTS The study included 69 patients. The mean age at study recruitment was 22.5 ± 4.5 years, 62.3% of patients aged 18 years or older, and 29 patients were receiving primary prophylaxis (38.0%). There was a positive correlation between HJHS and age and a negative correlation between FISH and age. The worsening HJHS was associated with non-primary prophylaxis and non-attendance at scheduled multidisciplinary consultations. The worsening FISH was associated with non-primary prophylaxis. The correlation between FISH and treatment adherence was significant for the delta. CONCLUSION The older the patient with haemophilia, the higher the probability of a worsening of the HJHS. In the presence of more arthropathies, the older the patient, the worse the FISH. Patients receiving primary prophylaxis show better results in the HJHS and FISH when compared to patients receiving secondary prophylaxis and/or on-demand treatment.
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Affiliation(s)
- Alexandre Jorge Teixeira Ribeiro
- Mestrado Acadêmico da, Escola Superior em Ciências da Saúde, Brasília, DF, Brazil.,Fundação Hemocentro de Brasília, Brasília, DF, Brazil
| | - Fábio Ferreira Amorim
- Programa de Mestrado Acadêmico and Laboratório de Saúde Baseada em Evidências, Escola Superior em Ciências da Saúde, Brasília, DF, Brazil
| | - Beatriz Mac Dowell Soares
- Curso de Medicina da, Escola Superior em Ciências da Saúde, Brasília, DF, Brazil.,Faculdade de Ciências da Saúde, Universidade de Brasília, Brasília, DF, Brazil
| | - Levy Aniceto Santana
- Laboratório de Saúde Baseada em Evidências and Mestrado Profissional em Ciências para a Saúde, Escola Superior em Ciências da Saúde, Brasília, DF, Brazil
| | - Aline Mizusaki Imoto
- Mestrado Acadêmico da, Escola Superior em Ciências da Saúde, Brasília, DF, Brazil.,Laboratório de Saúde Baseada em Evidências and Mestrado Profissional em Ciências para a Saúde, Escola Superior em Ciências da Saúde, Brasília, DF, Brazil
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Vøls KK, Kjelgaard‐Hansen M, Ley CD, Hansen AK, Petersen M. Initial joint bleed volume in a delayed on-demand treatment setup correlates with subsequent synovial changes in hemophilic mice. Animal Model Exp Med 2020; 3:160-168. [PMID: 32613175 PMCID: PMC7323705 DOI: 10.1002/ame2.12118] [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: 01/20/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Hemophilic arthropathy is a debilitating morbidity of hemophilia caused by recurrent joint bleeds. We investigated if the joint bleed volume, before initiation of treatment, was linked to the subsequent degree of histopathological changes and the development of bone pathology in a mouse model of hemophilic arthropathy. METHODS FVIII knock-out (F8-KO) mice were dosed with a micro-CT blood pool agent prior to induction of hemarthrosis. Eight hours after induction, the bleed volume was quantified with micro computed tomography (micro-CT) and recombinant FVIII treatment initiated. On Day 8, inflammation in the knees was characterized by fluorescence molecular tomography. On Day 14, knee pathology was characterized by micro-CT and histopathology. In a second study, contrast agent was injected into the knee of wild-type (WT) mice, followed by histopathological evaluation on Day 14. RESULTS The average joint bleed volume before treatment was 3.9 mm3. The inflammation-related fluorescent intensities in the injured knees were significantly increased on Day 8. The injured knees had significantly increased synovitis scores, vessel counts, and areas of hemosiderin compared to un-injured knees. However, no cartilage- or bone pathology was observed. The bleed volume before initiation of treatment correlated with the degree of synovitis and was associated with high fluorescent intensity on Day 8. In F8-KO and WT mice, persistence of contrast agent in the joint elicited morphological changes. CONCLUSION When applying a delayed on-demand treatment regimen to hemophilic mice subjected to an induced knee hemarthrosis, the degree of histopathological changes on Day 14 reflected the bleed volume prior to initiation of treatment.
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Affiliation(s)
- Kåre Kryger Vøls
- Global Drug DiscoveryNovo Nordisk A/SMaaloevDenmark
- Veterinary and Animal SciencesUniversity of CopenhagenFrederiksbergDenmark
| | | | | | | | - Maj Petersen
- Global Drug DiscoveryNovo Nordisk A/SMaaloevDenmark
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Vøls KK, Kjelgaard-Hansen M, Ley CD, Hansen AK, Petersen M. In vivo fluorescence molecular tomography of induced haemarthrosis in haemophilic mice: link between bleeding characteristics and development of bone pathology. BMC Musculoskelet Disord 2020; 21:241. [PMID: 32290832 PMCID: PMC7158129 DOI: 10.1186/s12891-020-03267-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 04/03/2020] [Indexed: 12/17/2022] Open
Abstract
Background Haemophilic arthropathy is a chronic and debilitating joint disease caused by recurrent spontaneous joint bleeds in patients with haemophilia. Understanding how characteristics of individual joint bleeds relate to the subsequent development of arthropathy could improve management and prevention of this joint disease. Here, we aimed to explore relations between joint bleed characteristics and development of bone pathology in a mouse model of haemophilic arthropathy by using novel in vivo imaging methodology. Methods We characterised induced knee bleeds in a murine model of haemophilic arthropathy by quantitative in vivo fluorescence molecular tomography (FMT) and by measurements of changes in the diameter of the injured knee. Wild-type mice and non-injured haemophilic mice acted as controls. Development of arthropathy was characterised by post mortem evaluation of bone pathology by micro-CT 14 days after bleed-induction. In an in vitro study, we assessed the effect of blood on the quantification of fluorescent signal with FMT. Results In most injured haemophilic mice, we observed significant loss of trabecular bone, and half of the mice developed pathological bone remodelling. Development of pathological bone remodelling was associated with significantly increased fluorescent signal and diameter of the injured knee just 1 day after induction of the bleed. Further, a correlation between the fluorescent signal 1 day after induction of the bleed and loss of trabecular bone reached borderline significance. In the in vitro study, we found that high concentrations of blood significantly decreased the fluorescent signal. Conclusion Our results add novel insights on the pathogenesis of haemophilic arthropathy and underline the importance of the acute phase of joint bleeds for the subsequent development of arthropathy.
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Affiliation(s)
- K K Vøls
- Global Drug Discovery, Novo Nordisk A/S, Novo Nordisk Park 1, 2760, Maaloev, Denmark. .,Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark.
| | - M Kjelgaard-Hansen
- Veterinary Clinical Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - C D Ley
- Global Drug Discovery, Novo Nordisk A/S, Novo Nordisk Park 1, 2760, Maaloev, Denmark
| | - A K Hansen
- Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - M Petersen
- Global Drug Discovery, Novo Nordisk A/S, Novo Nordisk Park 1, 2760, Maaloev, Denmark
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Pulles AE, Vøls KK, Christensen KR, Coeleveld K, Hansen AK, van Vulpen LFD, Petersen M, Mastbergen SC, Roepstorff K, Schutgens REG, Kjelgaard-Hansen M, Lafeber FPJG. Proteoglycan synthesis rate as a novel method to measure blood-induced cartilage degeneration in non-haemophilic and haemophilic rats. Haemophilia 2020; 26:e88-e96. [PMID: 32212362 PMCID: PMC7318356 DOI: 10.1111/hae.13969] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 02/26/2020] [Accepted: 03/02/2020] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Haemophilic animal models are used to study blood-induced cartilage damage, but quantitative and sensitive outcome measures are needed. AIM To develop a novel quantitative method for detecting early cartilage degeneration in a haemophilic rat model of blood-induced joint damage. METHODS The 35 Sulphate incorporation (35 SO4 2- assay) was applied to tibial and patellar cartilage of wild-type rats to quantify baseline proteoglycan synthesis and to evaluate the effect of 4-day blood exposure in vitro. Next, haemarthrosis was induced in 39 FVIII-deficient rats and characterized by changes in knee joint diameter and development of bone pathology (using micro-CT). Four- and 16-day posthaemarthrosis proteoglycan synthesis rate (PSR) was assessed using the 35 SO4 2- assay, with the contralateral knee as control. RESULTS In vitro, a decrease in PSR in tibial and patellar cartilage was demonstrated following blood exposure. In vivo, joint diameter and development of bone pathology confirmed successful induction of haemarthrosis. In the blood-exposed knee, tibial and patellar PSR was inhibited 4 and 16 days after induced haemarthrosis. Interestingly, at day 16 the proteoglycan synthesis in the contralateral knee was also inhibited to an extent correlating with that of the blood-exposed knee. CONCLUSION For the first time, early changes in cartilage matrix synthesis upon blood exposure were quantified with the 35 SO4 2- assay in a haemophilic rat model, establishing this assay as a novel method to study blood-induced cartilage damage.
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Affiliation(s)
- Astrid E Pulles
- Department of Rheumatology & Clinical Immunology, University Medical Center (UMC) Utrecht, Utrecht University, Utrecht, The Netherlands.,Van Creveldkliniek, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Kåre K Vøls
- Global Drug Discovery, Novo Nordisk A/S, Maaloev, Denmark.,Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | | | - Katja Coeleveld
- Department of Rheumatology & Clinical Immunology, University Medical Center (UMC) Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Axel K Hansen
- Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Lize F D van Vulpen
- Van Creveldkliniek, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Maj Petersen
- Global Drug Discovery, Novo Nordisk A/S, Maaloev, Denmark
| | - Simon C Mastbergen
- Department of Rheumatology & Clinical Immunology, University Medical Center (UMC) Utrecht, Utrecht University, Utrecht, The Netherlands
| | | | - Roger E G Schutgens
- Van Creveldkliniek, UMC Utrecht, Utrecht University, Utrecht, The Netherlands
| | | | - Floris P J G Lafeber
- Department of Rheumatology & Clinical Immunology, University Medical Center (UMC) Utrecht, Utrecht University, Utrecht, The Netherlands
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