1
|
Uehara M, Takahashi J, Kosho T. Spinal Deformity in Ehlers-Danlos Syndrome: Focus on Musculocontractural Type. Genes (Basel) 2023; 14:1173. [PMID: 37372353 DOI: 10.3390/genes14061173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/22/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Spinal deformity in Ehlers-Danlos syndrome (EDS) is an important symptom that can lead to trunk balance deterioration, respiratory dysfunction, and digestive disorders as the deformity progresses, thereby reducing a patient's quality of life and activities of daily living. The severity of the deformity varies widely, with treatment depending on the extent and the presence of associated complications. The present review addressed the current state of clinical research and treatment of spinal deformities in EDS with a specific focus on the musculocontractural type. Further studies are needed to better understand the underlying mechanisms of spinal deformity in EDS.
Collapse
Affiliation(s)
- Masashi Uehara
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, Matsumoto 390-8621, Nagano, Japan
| | - Jun Takahashi
- Department of Orthopaedic Surgery, Shinshu University School of Medicine, Matsumoto 390-8621, Nagano, Japan
| | - Tomoki Kosho
- Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto 390-8621, Nagano, Japan
- Center for Medical Genetics, Shinshu University Hospital, Matsumoto 390-8621, Nagano, Japan
- Division of Clinical Sequencing, Shinshu University School of Medicine, Matsumoto 390-8621, Nagano, Japan
- Division of Instrumental Analysis, Research Center for Advanced Science and Technology, Shinshu University, Matsumoto 390-8621, Nagano, Japan
| |
Collapse
|
2
|
Yang M, Chen K, Hou C, Yang Y, Zhai X, Chen K, Wei X, Bai Y, Li M. RHOA inhibits chondrogenic differentiation of mesenchymal stem cells in adolescent idiopathic scoliosis. Connect Tissue Res 2022; 63:475-484. [PMID: 35019797 DOI: 10.1080/03008207.2021.2019247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE The etiology of adolescent idiopathic scoliosis (AIS) remains unclear. The chondrogenic differentiation of mesenchymal stem cells (MSCs) is important in AIS, and the Ras homolog gene family member A (RHOA) is associated with chondrogenesis. The purpose of this study was to explore the effect of RHOA on the chondrogenic differentiation of MSCs in AIS. METHODS We isolated MSCs from patients with AIS (AIS MSCs) and individuals without AIS (control MSCs). The inhibitor Y27632 was used to inhibit the function of RHOA/ROCK signaling, and plasmid-based overexpression and siRNA-mediated knockdown were used to manipulate RHOA expression. CCK-8 was used to detect cell viability. The phosphorylation levels of LIMK1, MLC2 and cofilin were detected by Western blotting. The mRNA expression of aggrecan, SOX9, and COL2A1 were confirmed using RT-PCR. Immunofluorescence was used to analyze F-actin and collagen II. Alcian blue staining was performed to assess the secretion of glycosaminoglycans (GAGs). RESULTS We found that RHOA was significantly upregulated in AIS MSCs, and the phosphorylation levels of LIMK1, MLC2, and cofilin were increased. The mRNA expressions of aggrecan, SOX9, and COL2A1 were notably reduced in AIS MSCs. However, these effects were abolished by Y27632 treatment and RHOA knockdown in AIS MSCs. In addition, RHOA knockdown in AIS MSCs increased the content of collagen II and GAGs. RHOA overexpression in the control MSCs markedly activated the RHOA/ROCK signaling and decreased the expression of aggrecan, SOX9, and COL2A1, F-actin, and GAGs. CONCLUSION RHOA regulates the chondrogenic differentiation ability of MSCs in AIS via the RHOA/ROCK signaling pathway and this regulation may involve SOX9.
Collapse
Affiliation(s)
- Mingyuan Yang
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Kai Chen
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Canglong Hou
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Yilin Yang
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Xiao Zhai
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Kai Chen
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Xianzhao Wei
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Yushu Bai
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| | - Ming Li
- Department of Orthopedics, Changhai Hospital, Navy Medical University, Shanghai, People's Republic of China
| |
Collapse
|
3
|
Li H, Yang Z, Li D, Qiao F. A Novel Low-Cost 3D Printed Brace Design Method for Early Onset Scoliosis. J Med Device 2022. [DOI: 10.1115/1.4054998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Abstract
Early onset scoliosis (EOS) is a type of spine deformity that presents before 10 years of age. The biomechanical properties in scoliosis have been found to be di?erent, especially in the case of the concave and convex paraverte-bral muscles. Based on this fact, a novel 3d printed patient-specific asymmetric stiffness brace design method is proposed in this paper, aiming to provide asymmetric stiffness to match "imbalanced" biomechanical properties of the concave and convex paravertebral muscles, respectively, and treat EOS by applying the block-structure brace.A 3d CAD draft model of the brace contour was implemented from 3D scanning. The asymmetric stiffness block-structure brace was designed in Rhinoceros and the Finite Ele-ment (FE) model was imported into ABAQUS. FE simulation was employed to study the mechanical characteristics of the brace, which provided a quan-titative index for the "imbalanced" property of brace stiffness. The results of the FE simulation showed that the stiffnesses of the concave and convex sides were 145.88 N/mm and 35.95 N/mm, respectively. The block-structure brace was fabricated using 3d printing. Asymmetric stiffness was evaluated by corrective force measurements, which were obtained from a thin-film pressure sensor equipped on the brace. The patient-specific asymmetric stiffness brace was applied to clinical practice in a one-year old EOS patient. A novel low-cost 3D printed brace design method for EOS was proposed in this study that could potentially be useful in patient treatment acceptance.
Collapse
Affiliation(s)
- Hongwei Li
- State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, China
| | - Zhangkai Yang
- Department of Neurosurgery, Xi'an Children's Hospital, The Affiliated Children's Hospital of Xi'an Jiaotong University , Xi'an, Shaanxi 710003, China
| | - Dichen Li
- State Key Laboratory for Manufacturing System Engineering, School of Mechanical Engineering, Xi'an Jiaotong University , Xi'an, Shaanxi 710049, China
| | - Feng Qiao
- Honghui Hospital, Xi'an Jiaotong University , No.555, Youyidong Rd, Xi'an, Shaanxi 710054, China
| |
Collapse
|
4
|
Association of Ligamentum Flavum Hypertrophy with Adolescent Idiopathic Scoliosis Progression-Comparative Microarray Gene Expression Analysis. Int J Mol Sci 2022; 23:ijms23095038. [PMID: 35563428 PMCID: PMC9101523 DOI: 10.3390/ijms23095038] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 12/10/2022] Open
Abstract
The role of the ligamentum flavum (LF) in the pathogenesis of adolescent idiopathic scoliosis (AIS) is not well understood. Using magnetic resonance imaging (MRI), we investigated the degrees of LF hypertrophy in 18 patients without scoliosis and on the convex and concave sides of the apex of the curvature in 22 patients with AIS. Next, gene expression was compared among neutral vertebral LF and LF on the convex and concave sides of the apex of the curvature in patients with AIS. Histological and microarray analyses of the LF were compared among neutral vertebrae (control) and the LF on the apex of the curvatures. The mean area of LF in the without scoliosis, apical concave, and convex with scoliosis groups was 10.5, 13.5, and 20.3 mm2, respectively. There were significant differences among the three groups (p < 0.05). Histological analysis showed that the ratio of fibers (Collagen/Elastic) was significantly increased on the convex side compared to the concave side (p < 0.05). Microarray analysis showed that ERC2 and MAFB showed significantly increased gene expression on the convex side compared with those of the concave side and the neutral vertebral LF cells. These genes were significantly associated with increased expression of collagen by LF cells (p < 0.05). LF hypertrophy was identified in scoliosis patients, and the convex side was significantly more hypertrophic than that of the concave side. ERC2 and MAFB genes were associated with LF hypertrophy in patients with AIS. These phenomena are likely to be associated with the progression of scoliosis.
Collapse
|
5
|
Du ZS, Wang YS, Xie JM, Li T, Shi ZY, Lu QA, Zhang Y, Zhao Z, Bi N, Song ZB, Zhu TB. Feasibility of microwave ablation of the vertebral growth plate for spine growth regulation: a preliminary study. Int J Hyperthermia 2021; 38:1233-1241. [PMID: 34396870 DOI: 10.1080/02656736.2021.1964619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
PURPOSE To explore the feasibility of microwave ablation (MWA) of the vertebral growth plate as a minimally invasive treatment for early-onset scoliosis. MATERIALS AND METHODS One side of the L1-L3 vertebral growth plates were ablated using different MWA powers. Ablation safety and size were examined. Subsequently, L1-L3 vertebral growth plates were ablated on one side for 40 s at 20 W. At 2, 4, and 6 weeks after the ablation, growth changes of the spine were observed. RESULTS No piglets died during and after ablation, and all had modified Tarlov Grade 5. The safe MWA time (time for safely ablating the vertebral growth plate) was 17.0 ± 1.5 s at 50 W, 23.0 ± 2.3 s at 40 W, 31.0 ± 3.1 s at 30 W, 47.0 ± 3.7 s at 20 W, 70.0 ± 4.2 s at 15 W, and 158.0 ± 5.0 s at 10 W. With power <15 W, the vertebral growth plate could not be effectively ablated within the safe ablation time. Within the safe ablation times, the MWA size on hematoxylin and eosin slices on a transverse diameter was between 7 and 10 mm; and that on longitudinal diameter was mainly determined by the ablation needle length. Moreover, the growth plate and annulus fibrosus on the ablated side grew poorly over time, the vertebral body showed significant wedge-shaped changes, and the spine showed significant unbalanced growth. CONCLUSION MWA of the vertebral growth plate can be performed safely when accompanied with appropriate thermometry, and could be a new minimally invasive strategy in regulating spine growth.
Collapse
Affiliation(s)
- Zhi-Shan Du
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ying-Song Wang
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jing-Ming Xie
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Tao Li
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhi-Yue Shi
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Qiu-An Lu
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ying Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhi Zhao
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ni Bi
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhi-Bo Song
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ting-Biao Zhu
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| |
Collapse
|
6
|
Peng H, Jin F, Meng D, Li J, Yu S, Zhang S, Zeng G. Exploring the Pathological Role of Collagen in Paravertebral Muscle in the Progression of Idiopathic Scoliosis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1527403. [PMID: 32802834 PMCID: PMC7421238 DOI: 10.1155/2020/1527403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/20/2020] [Accepted: 07/14/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Paravertebral muscle (PVM) is considered as a contributing factor of idiopathic scoliosis (IS); collagen is crucial for maintaining the mechanical properties of PVM, but only a few researches have described this field. In this study, we observed the muscle stiffness of PVM and the curvature of the spine by adjusting the content of collagen in PVM of rats and explored the role of collagen in the progression of IS. METHODS 32 female Sprague Dawley rats were randomly divided into four groups: neutralizing antibody (NA) group (group 1), normal control group (group 2), IS group (group 3), and IS with NA group (group 4). TGF-β1 NA was injected into PVM in group 1 and group 4, while Normal saline in group 2 and group 3. The Cobb angle and muscle stiffness were measured before and after injection; the rats were sacrificed at one week after injection, and performed histological, Western Blot, and qRT-PCR examinations. RESULTS X-rays showed that scoliosis occurred in group 1 and relieved in group 4. The stiffness of PVM was decreased significantly on the convex side in group 1, while on the concave side in group 4. The expression of TGF-β1 and COL1 on the concave side in IS rats (group 3) was significantly increased than that in normal rats (group 2), the concentration of COL1 and COL3 in group 3 was significantly higher than that in group 2, and the addition of TGF-β1 NA significantly downregulated COL1 and COL3 in group 1 and group 4. The concentration of COL1 in convex PVM was negatively related to Cobb angle in group 1 and group 2, and in concave PVM was positively related to Cobb angle in group 3 and group 4. However, no significant correlation was found between COL3 and Cobb angle in group 3 and group 4. CONCLUSIONS Asymmetric biomechanical characteristics of PVM was an important etiological factor of IS, which was directly correlated with collagen, it could be adjusted by local intramuscular injecting of TGF-β1 NA, and finally had an effect on the shape of the spine.
Collapse
Affiliation(s)
- Haidong Peng
- 1Department of Rehabilitation, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Feng Jin
- 2Shanghai University of Medicine & Health Sciences, Shanghai, China
| | - Depeng Meng
- 3Department of Orthopedics, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jun Li
- 1Department of Rehabilitation, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Shuhan Yu
- 1Department of Rehabilitation, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Shen Zhang
- 1Department of Rehabilitation, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Guigang Zeng
- 1Department of Rehabilitation, Changzheng Hospital, Second Military Medical University, Shanghai, China
| |
Collapse
|
7
|
Zhang HQ, Wang LJ, Liu SH, Li J, Xiao LG, Yang GT. Adiponectin regulates bone mass in AIS osteopenia via RANKL/OPG and IL6 pathway. J Transl Med 2019; 17:64. [PMID: 30819183 PMCID: PMC6396498 DOI: 10.1186/s12967-019-1805-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 02/21/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Osteopenia have been well documented in adolescent idiopathic scoliosis (AIS). Adiponectin has been shown to be inversely proportional to body mass index and to affect bone metabolism. However, the circulating levels of adiponectin and the relationship between adiponectin and low bone mass in AIS remain unclear. METHODS A total of 563 AIS and 281 age-matched controls were recruited for this study. Anthropometry and bone mass were measured in all participants. Plasma adiponectin levels were determined by enzyme-linked immunosorbent assay (ELISA) in the AIS and control groups. An improved multiplex ligation detection reaction was performed to study on single nucleotide polymorphism. Facet joints were collected and used to measure the microstructure, the expression of RANKL, OPG, osteoblast-related genes, inflammatory factors, adiponectin and its receptors by qPCR, western blotting and immunohistochemistry. Furthermore, primary cells were extracted from facet joints to observe the reaction after adiponectin stimulation. RESULTS Compared with the controls, lower body mass index and a marked increase in circulating adiponectin were observed in AIS osteopenia (17.09 ± 1.09 kg/m2 and 21.63 ± 10.30 mg/L). A significant difference in the presence of rs7639352
was detected in the AIS osteopenia, AIS normal bone mass and control groups. The T allele showed a significant higher proportion in AIS osteopenia than AIS normal bone mass and control groups (41.75% vs 31.3% vs 25.7%, p < 0.05). micro-CT demonstrated that the AIS convex side had a significant lower bone volume than concave side. RNA and protein analyses showed that in cancellous bone, higher RANKL/OPG and adipoR1 levels and lower runx2 levels were observed, and in cartilage, higher adipoR1 and IL6 levels were observed in AIS. Furthermore, convex side had higher RANKL/OPG, IL6 and adipoR1 than concave side. Compared with normal primary cells, convex side primary cells showed the most acute action, and concave side primary cells showed the second-most acute action when exposed under same adiponectin concentration gradient. CONCLUSION Our results indicated that high circulating adiponectin levels may result from gene variations in AIS osteopenia. Adiponectin has a negative effect on bone metabolism, and this negative effect might be mediated by the ADR1-RANKL/OPG and ADR1-IL6 pathways.
Collapse
Affiliation(s)
- Hong-Qi Zhang
- Department of Spine Surgery, Xiangya Hospital of Central-South University, Changsha, 410008, Hunan, China.
| | - Long-Jie Wang
- Department of Spine Surgery, Xiangya Hospital of Central-South University, Changsha, 410008, Hunan, China.
| | - Shao-Hua Liu
- Department of Spine Surgery, Xiangya Hospital of Central-South University, Changsha, 410008, Hunan, China
| | - Jiong Li
- Department of Spine Surgery, Xiangya Hospital of Central-South University, Changsha, 410008, Hunan, China
| | - Li-Ge Xiao
- Department of Spine Surgery, Xiangya Hospital of Central-South University, Changsha, 410008, Hunan, China
| | - Guan-Teng Yang
- Department of Spine Surgery, Xiangya Hospital of Central-South University, Changsha, 410008, Hunan, China
| |
Collapse
|
8
|
A Genetic Variant in GPR126 Causing a Decreased Inclusion of Exon 6 Is Associated with Cartilage Development in Adolescent Idiopathic Scoliosis Population. BIOMED RESEARCH INTERNATIONAL 2019; 2019:4678969. [PMID: 30886859 PMCID: PMC6388357 DOI: 10.1155/2019/4678969] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 01/30/2019] [Indexed: 12/24/2022]
Abstract
Adolescent idiopathic scoliosis (AIS) is the most common spinal deformity disease in adolescents but its etiology and pathogenesis are still unclear. The current study aims to identify the relationship between single nucleotide polymorphisms (SNPs) of G protein-coupled receptor 126 (GPR126) gene and AIS predisposition. GPR126 contains 26 exons and alternative splicing of exon 6 and exon 25 produces 4 protein-coding transcripts. We genotyped SNPs of GPR126 gene around exon 6 and exon 25 in 131 Chinese AIS patients and 132 healthy controls and provided evidence that SNP rs41289839 G>A is strongly associated with AIS susceptibility. Linkage disequilibrium analysis suggests that rs41289839 and other AIS-related SNPs were in strong LD. Next, we demonstrated that rs41289839 G>A inhibits the inclusion of exon 6 during alternative splicing, resulting in a decreased expression level of exon 6-included transcript (GPR126-exon6in) relative to the exon 6 excluded transcript (GPR126-exon6ex) by minigene assay. Chondrogenic differentiation experiment showed that GPR126-exon6in has a high expression level relative to GPR126-exon6ex during chondrogenic differentiation of hMSCs. Our findings indicate that newly discovered SNP is related to cartilage development and may provide valuable insights into the etiology and pathogenesis of adolescent idiopathic scoliosis.
Collapse
|