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Yuan T, Lai CT, Yang SQ, Meng J, Qian H, Yu X, Jiang H, Cao QG, Xu JD, Bao NR. The rat as a novel model for chronic rotator cuff injuries. Sci Rep 2024; 14:5344. [PMID: 38438458 PMCID: PMC10912722 DOI: 10.1038/s41598-024-55281-5] [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: 10/10/2023] [Accepted: 02/22/2024] [Indexed: 03/06/2024] Open
Abstract
Chronic rotator cuff injuries (CRCIs) still present a great challenge for orthopaedics surgeons. Many new therapeutic strategies are developed to facilitate repair and improve the healing process. However, there is no reliable animal model for chronic rotator cuff injury research. To present a new valuable rat model for future chronic rotator cuff injuries (CRCIs) repair studies, and describe the changes of CRCIs on the perspectives of histology, behavior and MRI. Sixty male Wistar rats were enrolled and underwent surgery of the left shoulder joint for persistent subacromial impingement. They were randomly divided into experimental group (n = 30, a 3D printed PEEK implant shuttled into the lower surface of the acromion) and sham operation group (n = 30, insert the same implant, but remove it immediately). Analyses of histology, behavior, MRI and inflammatory pain-related genes expression profiles were performed to evaluate the changes of CRCIs. After 2-weeks running, the rats in the experimental group exhibited compensatory gait patterns to protect the injured forelimb from loading after 2-weeks running. After 8-weeks running, the rats in the experimental group showed obvious CRCIs pathological changes: (1) acromion bone hyperplasia and thickening of the cortical bone; (2) supraspinatus muscle tendon of the humeral head: the bursal-side tendon was torn and layered with disordered structure, forming obvious gaps; the humeral-side tendon is partially broken, and has a neatly arranged collagen. Partial fat infiltration is found. The coronal T2-weighted images showed that abnormal tendon-to-bone junctions of the supraspinatus tendon. The signal intensity and continuity were destroyed with contracted tendon. At the nighttime, compared with the sham operation group, the expression level of IL-1β and COX-2 increased significantly (P = 0063, 0.0005) in the experimental group. The expression of COX-2 in experimental group is up-regulated about 1.5 times than that of daytime (P = 0.0011), but the expression of IL-1β, TNF-a, and NGF are all down-regulated (P = 0.0146, 0.0232, 0.0161). This novel rat model of chronic rotator cuff injuries has the similar characteristics with that of human shoulders. And it supplies a cost-effective, reliable animal model for advanced tissue engineered strategies and future therapeutic strategies.
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Affiliation(s)
- Tao Yuan
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Cheng-Teng Lai
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Shao-Qiang Yang
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Jia Meng
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Hong Qian
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Xin Yu
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Hui Jiang
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Qing-Gang Cao
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China
| | - Jian-Da Xu
- Department of Orthopaedics, Changzhou Traditional Chinese Medical Hospital, Changzhou hospital Affiliated to Nanjing University of Chinese Medicine, 25 North Heping Road, Changzhou, 213000, Jiangsu, China.
| | - Ni-Rong Bao
- Department of Orthopaedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
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Gwon Y, Park S, Kim W, Park S, Sharma H, Jeong HE, Kong H, Kim J. Graphene Hybrid Tough Hydrogels with Nanostructures for Tissue Regeneration. NANO LETTERS 2024; 24:2188-2195. [PMID: 38324001 DOI: 10.1021/acs.nanolett.3c04188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Over the past few decades, hydrogels have attracted considerable attention as promising biomedical materials. However, conventional hydrogels require improved mechanical properties, such as brittleness, which significantly limits their widespread use. Recently, hydrogels with remarkably improved toughness have been developed; however, their low biocompatibility must be addressed. In this study, we developed a tough graphene hybrid hydrogel with nanostructures. The resultant hydrogel exhibited remarkable mechanical properties while representing an aligned nanostructure that resembled the extracellular matrix of soft tissue. Owing to the synergistic effect of the topographical properties, and the enhanced biochemical properties, the graphene hybrid hydrogel had excellent stretchability, resilience, toughness, and biocompatibility. Furthermore, the hydrogel displayed outstanding tissue regeneration capabilities (e.g., skin and tendons). Overall, the proposed graphene hybrid tough hydrogel may provide significant insights into the application of tough hydrogels in tissue regeneration.
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Affiliation(s)
- Yonghyun Gwon
- Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sangbae Park
- Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
- Institute of Nano-Stem Cells Therapeutics, NANOBIOSYSTEM Co., Ltd, Gwangju 61011, Republic of Korea
- Department of Biosystems Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Woochan Kim
- Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sunho Park
- Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
- Department of Bio-Industrial Machinery Engineering, Pusan National University, Miryang 50463, Republic of Korea
| | - Harshita Sharma
- Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hyunjoon Kong
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jangho Kim
- Department of Convergence Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Department of Rural and Biosystems Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
- Interdisciplinary Program in IT-Bio Convergence System, Chonnam National University, Gwangju 61186, Republic of Korea
- Institute of Nano-Stem Cells Therapeutics, NANOBIOSYSTEM Co., Ltd, Gwangju 61011, Republic of Korea
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Liu J, Wang W, Wang Z, Wu Q, Zhu Y, Wu W, Zhou Q. The Association between Dietary Habits and Rapid Postoperative Recovery of Rotator Cuff Repair. Nutrients 2023; 15:4587. [PMID: 37960241 PMCID: PMC10648498 DOI: 10.3390/nu15214587] [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: 09/14/2023] [Revised: 10/19/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
Some nutritional factors have been suggested to improve postoperative outcomes in rotator cuff (RC) repair, but dietary effects on the recovery speed after the surgery remain undefined. To investigate the potential roles of dietary habits in this context, we analyzed the 12-month follow-up data of 55 patients with RC repair and found that these patients could be categorized into a rapid recovery group (n = 35) and slow recovery group (n = 20) according to their postoperative recovery patterns. Group-based logistic analysis revealed that habitual intakes of meat (OR = 1.84, 95%CI, 1.22-2.76, p = 0.003), fruits (OR = 2.33, 95%CI, 1.26-5.67, p = 0.01), and wheat-flour foods (OR = 1.62, 95%CI, 1.2-2.25, p = 0.002) were significantly associated with rapid recovery. Moreover, among all intakes of wheat-flour foods, intakes of steamed and boiled flour products were also associated with rapid recovery. Further mediation analysis showed that eosinophilic granulocytes (EOs) significantly mediated the association between rapid RC recovery and the habitual intakes of meat (mediation proportion = 17.5%, P-mediation < 0.0001), fruits (17.9%, p < 0.0001), and wheat-flour foods (11.4%, p < 0.0001). Thus, our study suggests that certain dietary habits play beneficial roles in the context of postoperative recovery for RC repair.
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Affiliation(s)
- Jiaxin Liu
- Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai 200003, China; (J.L.); (W.W.); (Y.Z.)
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai 200438, China; (Z.W.); (Q.W.)
- Rugao Research Institute of Longevity and Aging, Fudan University, Rugao 226500, China
| | - Wei Wang
- Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai 200003, China; (J.L.); (W.W.); (Y.Z.)
| | - Zhifeng Wang
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai 200438, China; (Z.W.); (Q.W.)
- Rugao Research Institute of Longevity and Aging, Fudan University, Rugao 226500, China
| | - Qingyun Wu
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai 200438, China; (Z.W.); (Q.W.)
- Rugao Research Institute of Longevity and Aging, Fudan University, Rugao 226500, China
| | - Yunli Zhu
- Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai 200003, China; (J.L.); (W.W.); (Y.Z.)
| | - Weicheng Wu
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, Human Phenome Institute, School of Life Sciences, Fudan University, Shanghai 200438, China; (Z.W.); (Q.W.)
- Rugao Research Institute of Longevity and Aging, Fudan University, Rugao 226500, China
| | - Qi Zhou
- Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai 200003, China; (J.L.); (W.W.); (Y.Z.)
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