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Morozan A, Joy S, Fujii U, Fraser R, Watters K, Martin JG, Colmegna I. Superiority of systemic bleomycin to intradermal HOCl for the study of interstitial lung disease. Sci Rep 2023; 13:20577. [PMID: 37996447 PMCID: PMC10667597 DOI: 10.1038/s41598-023-47083-y] [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: 06/02/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
Systemic sclerosis (SSc) is an autoimmune disease characterized by vasculopathy, immune dysregulation, and multi-organ fibrosis. Interstitial lung disease (ILD) is a complication of SSc and a leading cause of SSc-death. The administration of hypochlorous acid (HOCl) intradermally in the mouse (HOCl-SSc) purportedly shows several features typical of SSc. We studied the model by injecting BALB/c mice daily intradermally with HOCl for 6-weeks, an exposure reported to induce lung fibrosis. On day 42, the skinfold thickness and the dermal thickness were two and three times larger respectively in the HOCl group compared to controls. HOCl treatment did not result in histological features of pulmonary fibrosis nor significant changes in lung compliance. Automated image analysis of HOCl mice lungs stained with picrosirius red did not show increased collagen deposition. HOCl injections did not increase pulmonary mRNA expression of pro-fibrotic genes nor induced the production of serum advanced oxidation protein products and anti-topoisomerase 1 antibodies. Immune cells in bronchoalveolar lavage fluid (BALF) and whole lung digests were not increased in HOCl-treated animals. Since lung fibrosis is proposed to be triggered by oxidative stress, we injected HOCl to Nrf2-/- mice, a mouse deficient in many antioxidant proteins. Lung compliance, histology, and BALF leukocyte numbers were comparable between Nrf2-/- mice and wild-type controls. We conclude that the HOCl-SSc model does not manifest SSc-lung disease.
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Affiliation(s)
- Arina Morozan
- Meakins Christie Laboratories, McGill University Health Centre and McGill University, Montreal, QC, H4A 3J1, Canada
- The Research Institute of the McGill University Health Centre, McGill University, 1001 Decarie Blvd, Office # EM2-3238, Montreal, QC, H4A 3J1, Canada
| | - Sydney Joy
- Meakins Christie Laboratories, McGill University Health Centre and McGill University, Montreal, QC, H4A 3J1, Canada
- The Research Institute of the McGill University Health Centre, McGill University, 1001 Decarie Blvd, Office # EM2-3238, Montreal, QC, H4A 3J1, Canada
| | - Utako Fujii
- Meakins Christie Laboratories, McGill University Health Centre and McGill University, Montreal, QC, H4A 3J1, Canada
| | - Richard Fraser
- Division of Pathology, McGill University Health Centre, Montreal, QC, Canada
| | - Kevin Watters
- Division of Pathology, McGill University Health Centre, Montreal, QC, Canada
| | - James G Martin
- Meakins Christie Laboratories, McGill University Health Centre and McGill University, Montreal, QC, H4A 3J1, Canada
- The Research Institute of the McGill University Health Centre, McGill University, 1001 Decarie Blvd, Office # EM2-3238, Montreal, QC, H4A 3J1, Canada
| | - Inés Colmegna
- The Research Institute of the McGill University Health Centre, McGill University, 1001 Decarie Blvd, Office # EM2-3238, Montreal, QC, H4A 3J1, Canada.
- Division of Rheumatology, McGill University Health Centre, McGill University, Montreal, QC, Canada.
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Park J, Jo S, Lee MK, Kim TH, Sung IH, Lee JK. Comparison of ligamentization potential between anterior cruciate ligament-derived cells and adipose-derived mesenchymal stem cells reseeded to acellularized tendon allograft. Bone Joint Res 2022; 11:777-786. [DOI: 10.1302/2046-3758.1111.bjr-2021-0548.r2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Aims To test the hypothesis that reseeded anterior cruciate ligament (ACL)-derived cells have a better ability to survive and integrate into tendon extracellular matrix (ECM) and accelerate the ligamentization process, compared to adipose-derived mesenchymal stem cells (ADMSCs). Methods Acellularized tibialis allograft tendons were used. Tendons were randomly reseeded with ACL-derived cells or ADMSCs. ACL-derived cells were harvested and isolated from remnants of ruptured ACLs during reconstruction surgery and cultured at passage three. Cell suspensions (200 µl) containing 2 × 106 ACL-derived cells or ADMSCs were prepared for the purpose of reseeding. At days 1, 3, and 7 post-reseeding, graft composites were assessed for repopulation with histological and immunohistochemical analysis. Matrix protein contents and gene expression levels were analyzed. Results In the graft reseeded with ACL-derived cells, a large number of elongated cells that integrated into the matrix were evident at day 3 and day 7. However, in the graft reseeded with ADMSCs, only a small number of elongated cells were found integrated into the matrix. Immunofluorescence for Ki-67 and type I collagen confirmed the pronounced production of type I collagen by Ki-67-positive ACL-derived cells integrated into the ECM. A messenger RNA (mRNA) expression assay demonstrated significantly higher gene expression levels of types I (p = 0.013) and III (p = 0.050) collagen in the composites reseeded with ACL-derived cells than ADMSCs. Conclusion ACL-derived cells, when reseeded to acellularized tendon graft, demonstrated earlier better survival and integration in the tendon ECM and resulted in higher gene expression levels of collagen, which may be essential to the normal ligamentization process compared to ADMSCs. Cite this article: Bone Joint Res 2022;11(11):777–786.
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Affiliation(s)
- Jinsung Park
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, South Korea
- Department of Translational Medicine, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, South Korea
| | - Sungsin Jo
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, South Korea
| | - Myung-Kyu Lee
- Department of Research and Development, Korea Public Tissue Bank, Seongnam-si, South Korea
| | - Tae-Hwan Kim
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, South Korea
- Department of Translational Medicine, Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, South Korea
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea
| | - Il-Hoon Sung
- Department of Orthopaedic Surgery, Hanyang University Hospital, Seoul, South Korea
| | - Jin K. Lee
- Department of Orthopaedic Surgery, Hanyang University Hospital, Seoul, South Korea
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Gupta R, Singh S, Kapoor A, Soni A, Kaur R, Kaur N. Graft tunnel integration occurs early in the tibial tunnel compared with the femoral tunnel after anterior cruciate ligament reconstruction with preserved insertion hamstring tendon graft. Knee Surg Relat Res 2021; 33:37. [PMID: 34627401 PMCID: PMC8501577 DOI: 10.1186/s43019-021-00119-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 09/21/2021] [Indexed: 11/10/2022] Open
Abstract
Background Preservation of hamstring tendon insertion at the time of anterior cruciate ligament (ACL) reconstruction is a well-known technique; however, its effect on graft integration is not well studied. The present study was conducted to study the graft integration inside the tibial and femoral tunnels, respectively, after ACL reconstruction using hamstring tendon graft with preserved insertion. Methods Twenty-five professional athletes who underwent ACL reconstruction using hamstring tendon graft with preserved tibia insertion were enrolled in the study. Functional outcomes were checked at final follow-up using Lysholm score and Tegner activity scale. Magnetic resonance imaging (MRI) was done at 8 months and 14 months follow-up to study the graft tunnel integration of the ACL graft at both tibial and femoral tunnels. Results The mean Fibrous interzone (FI) score (tibial tunnel) decreased from 2.61 (1–5) at 8 months to 2.04 (1–4) at 14 months follow-up (p = 0.02). The mean FI score (femoral side) decreased from 3.04 (2–5) at 8 months to 2.57 (2–4) at 14 months (p = 0.02). Conclusions Graft integration occurs early in the tibial tunnel as compared with the femur tunnel with preserved insertion hamstring tendon autograft. Trial registration CTRI/2019/07/020320 [registered on 22/07/2019]; http://www.ctri.nic.in/Clinicaltrials/pdf_generate.php?trialid=33884&EncHid=&modid=&compid=%27,%2733884det%27
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Affiliation(s)
- Ravi Gupta
- Unit II, Orthopaedics Cum Project Director Sports Injury Centre and Medical Superintendent, Government Medical College Hospital, Chandigarh, India
| | - Sandeep Singh
- Department of Orthopaedics, Government Medical College Hospital, Chandigarh, India
| | - Anil Kapoor
- Department of Orthopaedics, Government Medical College Hospital, Chandigarh, India.
| | - Ashwani Soni
- Department of Orthopaedics, Government Medical College Hospital, Chandigarh, India
| | - Ravinder Kaur
- Department of Radio-Diagnosis, Government Medical College Hospital, Chandigarh, India
| | - Narinder Kaur
- Department of Radio-Diagnosis, Government Medical College Hospital, Chandigarh, India
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