PMID- 35072275 OWN - NLM STAT- MEDLINE DCOM- 20221014 LR - 20221215 IS - 1554-527X (Electronic) IS - 0736-0266 (Linking) VI - 40 IP - 11 DP - 2022 Nov TI - Similarity and difference between aging and puncture-induced intervertebral disc degeneration. PG - 2565-2575 LID - 10.1002/jor.25281 [doi] AB - The purpose of our study was to investigate the changes in micromorphology and mechanical properties of intervertebral discs degeneration induced by aging and puncture. Normal group (NG), 2 weeks post-puncture degeneration group (PDG) and aging degeneration group (ADG) each included 10 rats. Plain film, magnetic resonance imaging, and histological testing were utilized to assess intervertebral disc degeneration. Atomic force microscope was utilized to analyze the microstructure and elastic modulus of the intervertebral disc, while immunohistochemistry was employed to assess alterations in the cell matrix using collagen I, collagen II, matrix metalloproteinase-3 (MMP-3), and tumour necrosis factor-alpha (TNF-alpha). The results showed that the disc height ratio between PDG and ADG decreased. In the PDG and ADG group, histological scores both increased, the gray value of the T2 signal decreased, the proportion of MMP-3 and TNF-positive cells in intervertebral disc tissues was higher (p < 0.05) and the IOD values of COL-2 lower in intervertebral disc tissues (p < 0.05). The elastic modulus of PDG and ADG annulus fibers (AF) increased compared to the NG (p < 0.05); when compared to PDG, the elastic modulus of ADG AF decreased (p < 0.05). The elastic modulus of PDG and ADG collagen increased in the nucleus pulposus (NP, p < 0.05); ADG had a greater AF diameter than NG and PDG (p < 0.05). The results indicated that ADG fiber diameter thickens, and chronic inflammation indicators rise; PDG suffers from severe extracellular matrix loss. The degeneration of the ADG and PDG intervertebral discs is different. The results provide foundation for clinical research. CI - (c) 2022 Orthopaedic Research Society. Published by Wiley Periodicals LLC. FAU - He, Shuangjun AU - He S AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. AD - Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Danyang, Jiangsu, China. FAU - Zhang, Yijian AU - Zhang Y AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. FAU - Zhou, Zhangzhe AU - Zhou Z AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. FAU - Shao, Xiaofeng AU - Shao X AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. FAU - Chen, Kangwu AU - Chen K AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. FAU - Dai, Shouqian AU - Dai S AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. FAU - Liang, Ting AU - Liang T AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. AD - Department of Orthopaedics, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China. FAU - Qian, Zhonglai AU - Qian Z AUID- ORCID: 0000-0002-0737-9696 AD - Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. FAU - Luo, Zongping AU - Luo Z AD - Department of Orthopaedics, Orthopaedic Institute, The First Affiliated Hospital, Soochow University, Suzhou, Jiangsu, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220204 PL - United States TA - J Orthop Res JT - Journal of orthopaedic research : official publication of the Orthopaedic Research Society JID - 8404726 RN - 0 (Tumor Necrosis Factor-alpha) RN - 9007-34-5 (Collagen) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Aging MH - Animals MH - Collagen MH - Disease Models, Animal MH - *Intervertebral Disc/pathology MH - *Intervertebral Disc Degeneration/diagnostic imaging/etiology/pathology MH - Matrix Metalloproteinase 3 MH - Punctures MH - Rats MH - Tumor Necrosis Factor-alpha OTO - NOTNLM OT - atomic force microscopy OT - biomechanics OT - collagen fiber OT - elastic modulus OT - intervertebral disc EDAT- 2022/01/25 06:00 MHDA- 2022/10/15 06:00 CRDT- 2022/01/24 08:59 PHST- 2022/01/10 00:00 [revised] PHST- 2021/07/22 00:00 [received] PHST- 2022/01/16 00:00 [accepted] PHST- 2022/01/25 06:00 [pubmed] PHST- 2022/10/15 06:00 [medline] PHST- 2022/01/24 08:59 [entrez] AID - 10.1002/jor.25281 [doi] PST - ppublish SO - J Orthop Res. 2022 Nov;40(11):2565-2575. doi: 10.1002/jor.25281. Epub 2022 Feb 4.