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Jia D, Zhang R, He Y, Cai G, Zheng J, Yang Y, Li Y. Comparative effectiveness of two methods for inducing osteoarthritis in a novel animal model, the Diannan small-ear pig. J Orthop Surg Res 2021; 16:594. [PMID: 34649596 PMCID: PMC8515660 DOI: 10.1186/s13018-021-02734-6] [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: 02/02/2021] [Accepted: 09/16/2021] [Indexed: 11/28/2022] Open
Abstract
Background Varieties of animals were used to study osteoarthritis pathogenesis. The Diannan small-ear pig, which is native to Yunnan, China, is thought to have an articular anatomy similar to that of humans and is more likely to be a source of pathological tissues than other animals. The aim of this study was to determine whether this animal can serve as a more effective osteoarthritis model and explore the role of SDF-1/CXCR4 signaling pathway in the development of Osteoarthritis in animals. Methods Twenty-seven adult pigs were randomly divided into three groups and underwent the Hulth procedure, papain articular injection, and conventional breeding. After 4, 8, and 12 weeks, cartilage tissues from knee joint were extracted for general and histological observation, immunofluorescence, and biochemical analysis. Synovium was taken out for stromal cell-derived factor-1 analysis. Results Histopathological observation showed obvious cartilage loss in two experimental groups, this cartilage loss was more severe in the chemical groups. Synovial stromal cell-derived factor1 levels increased over time in all groups. mRNA and protein levels of matrix metalloproteinase-3 were much higher in the chemical groups than in the other groups, whereas levels of collagen type II and aggrecan were significantly lower in the chemical groups than in the other groups. Immunofluorescence assays of collagen type II revealed an apparent reduction in this marker in the chemical groups compared with the other groups. Conclusions These results indicated that the Diannan small-ear pig can be used as an effective osteoarthritis model. In addition, it is much more convenient and much faster to induce osteoarthritis by intra-articular injection of papain, which is a method worthy of being promoted.
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Affiliation(s)
- Di Jia
- Department of Sports Medicine, The First Affiliated Hospital, Kunming Medical University, #295, Road Xichang, District Xishan, Kunming, 650000, Yunan, China
| | - Ruixian Zhang
- Department of Environment-Related Health, Center for Disease Control and Prevention of Yunnan Province, Kunming, 650034, China
| | - Yinghong He
- Department of Sports Medicine, The First Affiliated Hospital, Kunming Medical University, #295, Road Xichang, District Xishan, Kunming, 650000, Yunan, China
| | - Guofeng Cai
- Department of Sports Medicine, The First Affiliated Hospital, Kunming Medical University, #295, Road Xichang, District Xishan, Kunming, 650000, Yunan, China
| | - Jiali Zheng
- Department of Sports Medicine, The First Affiliated Hospital, Kunming Medical University, #295, Road Xichang, District Xishan, Kunming, 650000, Yunan, China
| | - Yuye Yang
- Department of Reproductive Medicine, Kunming Angel Woman's and Children's Hospital, Kunming, 650000, China
| | - Yanlin Li
- Department of Sports Medicine, The First Affiliated Hospital, Kunming Medical University, #295, Road Xichang, District Xishan, Kunming, 650000, Yunan, China.
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Zhao D, Zeng Z, Mo H, Hu W, Tian S, Hu D, Gong L, Hu K. Orexin-A inhibits cerebral ischaemic inflammatory injury mediated by the nuclear factor-κB signalling pathway and alleviates stroke-induced immunodepression in mice. Brain Res Bull 2021; 174:296-304. [PMID: 34216650 DOI: 10.1016/j.brainresbull.2021.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 06/08/2021] [Accepted: 06/27/2021] [Indexed: 11/26/2022]
Abstract
Cerebral ischaemia is accompanied by infectious complications due to immunosuppression, known as stroke-induced immunodepression (SIID). Orexin-A (OXA), a neuropeptide produced in the hypothalamus, has been reported to have neuroprotective properties after stroke and is known to modulate inflammatory processes in peripheral tissues. The aim of this study was to determine the effects of orexin-A (OXA) on cerebral ischaemic inflammatory injury and SIID following experimental stroke. Cerebral ischaemia was induced in C57/BL6 mice by middle cerebral artery occlusion (MCAO). A mouse model of pneumonia and poststroke pneumococcal pneumonia was established by intratracheal inoculation with S. pneumoniae in a normal mouse or MCAO mouse model on the third day. We found that OXA postconditioning inhibited cerebral ischaemic inflammatory injury. The mechanism involved downregulation of the NF-κB signalling pathway. In addition, OXA may serve as a potential treatment target for attenuating stroke-induced immunodepression in mice.
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Affiliation(s)
- Dong Zhao
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
| | - Zhaofu Zeng
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
| | - Huaheng Mo
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
| | - Weihua Hu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
| | - Sumei Tian
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
| | - Die Hu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
| | - Lin Gong
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
| | - Ke Hu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
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