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Aboushaala K, Chee AV, Adnan D, Toro SJ, Singh H, Savoia A, Dhillon ES, Yuh C, Dourdourekas J, Patel IK, Vucicevic R, Espinoza‐Orias AA, Martin JT, Oh C, Keshavarzian A, Albert HB, Karppinen J, Kocak M, Wong AYL, Goldberg EJ, Phillips FM, Colman MW, Williams FMK, Borgia JA, Naqib A, Green SJ, Forsyth CB, An HS, Samartzis D. Gut microbiome dysbiosis is associated with lumbar degenerative spondylolisthesis in symptomatic patients. JOR Spine 2024; 7:e70005. [PMID: 39398942 PMCID: PMC11467165 DOI: 10.1002/jsp2.70005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 09/17/2024] [Accepted: 09/18/2024] [Indexed: 10/15/2024] Open
Abstract
Background Lumbar degenerative spondylolisthesis (LDS), characterized as degeneration of the intervertebral disc and structural changes of the facet joints, is a condition with varying degrees of instability that may lead to pain, canal stenosis, and subsequent surgical intervention. However, the etiology of LDS remains inconclusive. Gut microbiome dysbiosis may stimulate systemic inflammation in various disorders. However, the role of such dysbiosis upon spine health remains under-studied. The current study assessed the association of gut microbiome dysbiosis in symptomatic patients with or without LDS. Methods A cross-sectional analysis within the framework of a prospective study was performed. DNA was extracted from fecal samples collected from adult symptomatic patients with (n = 21) and without LDS (n = 12). Alpha and beta diversity assessed differences in fecal microbial community between groups. Taxon-by-taxon analysis identified microbial features with differential relative abundance between groups. Subject demographics and imaging parameters were also assessed. Results There was no significant group differences in age, sex, race, body mass index, smoking/alcohol history, pain profiles, spinopelvic alignment, and Modic changes (p >0.05). LDS subjects had significantly higher disc degeneration severity (p = 0.018) and alpha diversity levels compared to non-LDS subjects (p = 0.002-0.003). Significant differences in gut microbial community structure were observed between groups (p = 0.046). Subjects with LDS exhibited distinct differences at the phylum level, with a significantly higher Firmicutes to Bacteroidota ratio compared to non-LDS (p = 0.003). Differential relative abundance analysis identified six taxa with significant differences between the two groups, with LDS demonstrating an increase in putative pro-inflammatory bacteria (Dialister, CAG-352) and a decrease in anti-inflammatory bacteria (Slackia, Escherichia-Shigella). Conclusion This study is the first to report a significant association of gut microbiome dysbiosis and LDS in symptomatic patients, noting pro-inflammatory bacterial taxa. This work provides a foundation for future studies addressing the role of the gut microbiome in association with spine health and disease.
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Affiliation(s)
- Khaled Aboushaala
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Ana V. Chee
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Darbaz Adnan
- Center for Integrated Microbiome & Chronobiology Research, Rush Medical College, Rush University Medical CenterChicagoIllinoisUSA
| | - Sheila J. Toro
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Harmanjeet Singh
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Andrew Savoia
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Ekamjeet S. Dhillon
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Catherine Yuh
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Jake Dourdourekas
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Ishani K. Patel
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Rajko Vucicevic
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | | | - John T. Martin
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Chundo Oh
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Ali Keshavarzian
- Department of Internal MedicineRush University Medical CenterChicagoIllinoisUSA
| | - Hanne B. Albert
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Jaro Karppinen
- Research Unit of Health Sciences and TechnologyUniversity of OuluOuluFinland
| | - Mehmet Kocak
- Department of Radiology & Nuclear MedicineRush University Medical CenterChicagoIllinoisUSA
| | - Arnold Y. L. Wong
- Department of Rehabilitation SciencesThe Hong Kong Polytechnic UniversityHong KongChina
| | - Edward J. Goldberg
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Frank M. Phillips
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Matthew W. Colman
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Frances M. K. Williams
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
- Department of Twins Research and Genetic EpidemiologyKing's CollegeLondonUK
| | - Jeffrey A. Borgia
- Departments of Anatomy & Cell Biology and PathologyRush University Medical CenterChicagoIllinoisUSA
| | - Ankur Naqib
- Department of Internal MedicineRush University Medical CenterChicagoIllinoisUSA
| | - Stefan J. Green
- Department of Internal MedicineRush University Medical CenterChicagoIllinoisUSA
| | | | - Howard S. An
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Dino Samartzis
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
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Feng K, Cen J, Zou X, Zhang T. Novel insight into MDA-7/IL-24: A potent therapeutic target for autoimmune and inflammatory diseases. Clin Immunol 2024; 266:110322. [PMID: 39033900 DOI: 10.1016/j.clim.2024.110322] [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: 05/29/2024] [Revised: 07/02/2024] [Accepted: 07/11/2024] [Indexed: 07/23/2024]
Abstract
Melanoma differentiation-associated gene-7 (MDA-7)/interleukin-24 (IL-24) is a pleiotropic member of the IL-10 family of cytokines, and is involved in multiple biological processes, including cell proliferation, cell differentiation, tissue fibrosis, the inflammatory response, and antitumor activity. MDA-7/IL-24 can regulate epithelial integrity, homeostasis, mucosal immunity and host resistance to various pathogens by enhancing immune and inflammatory responses. Our recent study revealed the mechanism of MDA-7/IL-24 in promoting airway inflammation and airway remodeling through activating the JAK/STAT3 and ERK signaling pathways in bronchial epithelial cells. Herein, we summarize the cellular sources, inducers, target cells, signaling pathways, and biological effects of MDA-7/IL-24 in several allergic and autoimmune diseases. This review also synopsizes recent advances in clinical research targeting MDA-7/IL-24 or its receptors. Based on these advancements, we emphasize its potential as a target for immunotherapy and discuss the challenges of developing immunotherapeutic drugs targeting MDA-7/IL-24 or its receptors in autoimmune and inflammatory disorders.
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Affiliation(s)
- Kangni Feng
- Department of Pulmonary and Critical Care Medicine, the Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Disease of Sun Yat-sen University, Guangzhou, Guangdong Province 510630, China
| | - Jiemei Cen
- Department of Pulmonary and Critical Care Medicine, the Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Disease of Sun Yat-sen University, Guangzhou, Guangdong Province 510630, China
| | - Xiaoling Zou
- Department of Pulmonary and Critical Care Medicine, the Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Disease of Sun Yat-sen University, Guangzhou, Guangdong Province 510630, China
| | - Tiantuo Zhang
- Department of Pulmonary and Critical Care Medicine, the Third Affiliated Hospital of Sun Yat-sen University, Institute of Respiratory Disease of Sun Yat-sen University, Guangzhou, Guangdong Province 510630, China.
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Shaji V, Dagamajalu S, Sanjeev D, George M, Kanekar S, Prasad G, Keshava Prasad TS, Raju R, Devasahayam Arokia Balaya R. Deciphering the Receptor-Mediated Signaling Pathways of Interleukin-19 and Interleukin-20. J Interferon Cytokine Res 2024; 44:388-398. [PMID: 38451706 DOI: 10.1089/jir.2024.0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024] Open
Affiliation(s)
- Vineetha Shaji
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Shobha Dagamajalu
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Diya Sanjeev
- Center for Integrative Omics Data Science, Yenepoya (Deemed to be University), Mangalore, India
| | - Mejo George
- Center for Integrative Omics Data Science, Yenepoya (Deemed to be University), Mangalore, India
| | - Saptami Kanekar
- Center for Integrative Omics Data Science, Yenepoya (Deemed to be University), Mangalore, India
| | - Ganesh Prasad
- Department of Biochemistry, Yenepoya Medical College, Yenepoya (Deemed to be University), Mangalore, India
| | | | - Rajesh Raju
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
- Center for Integrative Omics Data Science, Yenepoya (Deemed to be University), Mangalore, India
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Miller G, Pareek O, Penman SL, Thanos PK. The Effects of Nicotine and Cannabinoids on Cytokines. Curr Pharm Des 2024; 30:2468-2484. [PMID: 38859790 DOI: 10.2174/0113816128293077240529111824] [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: 01/11/2024] [Revised: 03/11/2024] [Accepted: 04/04/2024] [Indexed: 06/12/2024]
Abstract
BACKGROUND The usage of nicotine and cannabinoids has rapidly grown in popularity, leading to increased research into how they can affect people's health, both positively and negatively. Nicotine, Cannabidiol (CBD), and Δ9-tetrahydrocannabinol (THC) have been shown to have significant effects on cytokine function and inflammatory response. OBJECTIVE This study aimed to review and summarize the current literature on the effects of nicotine and cannabinoids on cytokines, including interleukins, TNF, IFN, and TGF-β. METHODS Literature search was conducted on Medline/PubMed electronic databases utilizing the search terms "nicotine" OR "cannabis" OR "cannabinoids" AND "cytokine" AND "inflammation" AND "stress" AND "immune" from 11/1973 to 02/2024. RESULTS THC and CBD usage have been associated with conflicting impacts on immune response, and observed to both exacerbate and inhibit inflammation. Nicotine has been shown to be generally proinflammatory with regards to cytokines. These responses have been reported to have significant effects on bodily response to inflammation-related diseases. Nicotine usage is associated with worsened outcomes for some conditions, like chronic pain, but improved outcomes for others, like arthritis. The impacts of cannabinoid usage tend to be more positive, exerting anti-inflammatory effects across a wide range of diseases. Given the widespread usage of these substances, it is important to understand the nature of their consequences on immune functions and the underlying mechanisms by which they act. CONCLUSION This review has covered how cannabinoids and nicotine affect inflammation directly and how these effects can be attributed to the treatment of inflammatory diseases. In summary, the existing research studying the effects of cannabinoids and nicotine supports the major relationship between nicotine and cannabis use and inflammatory diseases.
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Affiliation(s)
- Grace Miller
- Department of Pharmacology Toxicology, University at Buffalo, State University of New York, Buffalo, NY 14068, United States
| | - Ojas Pareek
- Department of Pharmacology Toxicology, University at Buffalo, State University of New York, Buffalo, NY 14068, United States
| | - Samantha L Penman
- Department of Pharmacology Toxicology, University at Buffalo, State University of New York, Buffalo, NY 14068, United States
| | - Panayotis K Thanos
- Department of Pharmacology Toxicology, University at Buffalo, State University of New York, Buffalo, NY 14068, United States
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Hsu YH, Chen CN, Chang HI, Tsai HL, Chang YH, Cheng IS, Yang YS, Huang KY. Manipulation of osteogenic and adipogenic differentiation of human degenerative disc and ligamentum flavum derived progenitor cells using IL-1β, IL-19, and IL-20. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:3413-3424. [PMID: 37563485 DOI: 10.1007/s00586-023-07878-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/22/2023] [Accepted: 07/28/2023] [Indexed: 08/12/2023]
Abstract
PURPOSE To elucidate whether pro-inflammatory cytokines might influence the commitment of intervertebral disc (IVD)- and ligamentum flavum (LF)-derived progenitor cells toward either osteogenesis or adipogenesis, specifically Interleukin-1β (IL-1β), IL-19, and IL-20. METHODS Sixty patients with degenerative spondylolisthesis and lumbar or lumbosacral spinal stenosis were included in the study. Injuries to the spine, infections, and benign or malignant tumors were excluded. From nine patient samples, IVD- and LF-derived cells were isolated after primary culture, and two clinical samples were excluded due to mycoplasma infection. The effects of IL-1β, IL-19, as well as IL-20 in regulating osteogenic and adipogenic differentiation in vitro were investigated. RESULTS Primary IVD- and LF-derived cells were found to have a similar cell morphology and profile of surface markers (CD44, CD90, and CD105) as placenta-derived mesenchymal stem cells (MSCs). Primary IVD/LF cells have a high capacity to differentiate into osteocytes and adipocytes. IL-19 had a tendency to promote adipogenesis. IL-20 inhibited osteogenesis and promoted adipogenesis; IL-1β promoted osteogenesis but inhibited adipogenesis. CONCLUSION IL-1β, IL-19, and IL-20 impact the adipogenic and osteogenic differentiation of IVD-derived and LF-derived cells. Modulating the expression of IL-1β, IL-19, and IL-20 provides a potential avenue for controlling cell differentiation of IVD- and LF-derived cells, which might have beneficial effect for degenerative spondylolisthesis and spinal stenosis.
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Affiliation(s)
- Yu-Hsiang Hsu
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Research Center of Clinical Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Cheng-Nan Chen
- Department of Biochemical Science and Technology, National Chiayi University, Chiayi City, Taiwan
| | - Hsin-I Chang
- Department of Biochemical Science and Technology, National Chiayi University, Chiayi City, Taiwan
| | - Hui-Ling Tsai
- Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Sheng-Li Road, Tainan, 704, Taiwan
| | - Yu-Hsien Chang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - I-Szu Cheng
- College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Shiuan Yang
- Education Center, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan
| | - Kuo-Yuan Huang
- Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 138, Sheng-Li Road, Tainan, 704, Taiwan.
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Yang J, Chen D, Tian G, Mao X, He J, Zheng P, Yu J, Luo Y, Luo J, Huang Z, Wu A, Yan H, Yu B. 1,25-Dihydroxyvitamin D3 Negatively Regulates the Inflammatory Response to Porcine Epidemic Diarrhea Virus Infection by Inhibiting NF-κB and JAK/STAT Signaling Pathway in IPEC-J2 Porcine Epithelial Cells. Int J Mol Sci 2022; 23:ijms231810603. [PMID: 36142545 PMCID: PMC9504568 DOI: 10.3390/ijms231810603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) infection causes watery diarrhea and vomiting in piglets. The pathogenesis of PEDV infection is related to intestinal inflammation. It is known that 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) has potent anti-inflammatory activity, but it is unknown whether 1,25(OH)2D3 can inhibit the PEDV-induced inflammatory response and the underlying mechanism. We used transcriptome analysis, gene and protein expression, RNA interference and overexpression, and other techniques to study the anti-inflammatory effects of 1,25(OH)2D3 on PEDV infection in IPEC-J2 cells. The results showed that interleukin 19 (IL-19) and C-C motif chemokine ligand 20 (CCL20) gene expression were enhanced with the increase in PEDV infection time in IPEC-J2 cells. Interestingly, 1,25(OH)2D3 supplementation obviously inhibited IL-19 and CCL20 expression induced by PEDV. Meanwhile, we also found that 1,25(OH)2D3 reduced p-NF-κB, p-STAT1, and p-STAT3 protein levels induced by PEDV at 24 h post-infection. IκBα and SOCS3, NF-κB, and STAT inhibitor respectively, were increased by 1,25(OH)2D3 supplementation upon PEDV infection. In addition, 1,25(OH)2D3 supplementation inhibited ISG15 and MxA expression induced by PEDV. Although 1,25(OH)2D3 suppressed the JAK/STAT signal pathway and antiviral gene expression, it had no significant effects on PEDV replication and IFN-α-induced antiviral effects. In addition, when the vitamin D receptor (VDR) was silenced by siRNA, the anti-inflammatory effect of 1,25(OH)2D3 was inhibited. Meanwhile, the overexpression of VDR significantly downregulated IL-19 and CCL20 expression induced by PEDV infection. Together, our results provide powerful evidence that 1,25(OH)2D3 could alleviate PEDV-induced inflammation by regulating the NF-κB and JAK/STAT signaling pathways through VDR. These results suggest that vitamin D could contribute to inhibiting intestinal inflammation and alleviating intestinal damage in PEDV-infected piglets, which offers new approaches for the development of nutritional strategies to prevent PEDV infection in piglets.
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Chen CN, Chang HI, Yen CK, Liu WL, Huang KY. Mechanical Stretch Induced Osteogenesis on Human Annulus Fibrosus Cells through Upregulation of BMP-2/6 Heterodimer and Activation of P38 and SMAD1/5/8 Signaling Pathways. Cells 2022; 11:cells11162600. [PMID: 36010676 PMCID: PMC9406707 DOI: 10.3390/cells11162600] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 12/04/2022] Open
Abstract
Degenerative disc disease (DDD) is an important cause of low back pain. Repetitive tensile stress from the daily motion of the spine predisposes it to injury of the annulus fibrosus (AF) which causes IVD degeneration. This study aims to determine the causal relationship between mechanical stretch and osteogenesis in the AF cells of IVD as affected by bone morphogenic proteins (BMPs), specifically BMP-2/6 heterodimers. Our results found that 15% tensile stress (high cyclic stretching, HCS) may induce the expression of osteogenesis-related markers (Runx2, osterix) by upregulating BMP-2/6 heterodimeric ligands and their receptors on the human AF cell line. HCS also induced transient phosphorylation of p38 mitogen-activated protein (MAP) kinase and SMAD1/5/8. Neutralizing antibodies to the BMP-2/6 receptor (ALK3) blocked the expression of Runx2 and osterix, as well as the phosphorylation of p38 and SMAD1/5/8. In addition, treatment with a p38 MAPK inhibitor (SB203580) or siRNA to neutralize the effects of SMAD1/5/8 suppressed tensile stress-induced Runx2 and osterix expression. Mechanical stretching induces activation of p38 MAP kinase and SMAD1/5/8 signaling pathways, followed by the upregulation of BMP-2/6 heterodimer expression, thereby stimulating osteogenic Runx2 and osterix expression on AF cells. HCS may accelerate the progression of IVD degeneration by promoting an osteogenic response.
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Affiliation(s)
- Cheng-Nan Chen
- Department of Biochemical Science and Technology, National Chiayi University, Chiayi City 60004, Taiwan
| | - Hsin-I Chang
- Department of Biochemical Science and Technology, National Chiayi University, Chiayi City 60004, Taiwan
| | - Chia-Kung Yen
- Department of Food Science, National Chiayi University, Chiayi City 60004, Taiwan
| | - Wen-Lung Liu
- Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70403, Taiwan
| | - Kuo-Yuan Huang
- Department of Orthopedics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 70403, Taiwan
- Correspondence: ; Tel.: +886-6-235-3535 (ext. 5237); Fax: +886-6-2766189
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Cui Z, Zhu X, Zhao F, Li D, Deng Y, Tan A, Lai Y, Huang Z, Gong H. Molecular identification and functional exploration of interleukin-20 in snakehead (Channa argus) involved in bacterial invasion and the proliferation of head kidney leukocytes. FISH & SHELLFISH IMMUNOLOGY 2022; 127:623-632. [PMID: 35810964 DOI: 10.1016/j.fsi.2022.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
As an inflammatory cytokine of the interleukin-20 (IL-20) subfamily, IL-20 has various functions in immune defenses, inflammatory diseases, tissue regeneration, cancer, and metabolism. Although the characteristics and functions of mammalian IL-20 have been clarified, those of fish IL-20 remain unclear. In this study, the IL-20 gene from the snakehead Channa argus (shIL-20) was cloned and functionally characterized. Similar to the IL-20 homologues of other species, the shIL-20 has a five exon/four intron structure in the coding region. The open reading frame of shIL-20 consists of 528 base pairs and encodes 175 amino acids (aa), including a signal peptide (aa 1-24) and a mature peptide (aa 25-175). The mature shIL-20 protein has six conserved cysteine residues, which occur in the IL-20 proteins of all species analyzed, and an additional cysteine residue (Cys-82) found only in the IL-20 proteins of several teleosts. The modeled tertiary structure of shIL-20 is similar with that of Homo sapiens IL-20. The shIL-20 was expressed constitutively in all the tissues analyzed, and its transcription was induced in the spleen and head kidney by Aeromonas schubertii and Nocardia seriolae in vivo and in head kidney leukocytes (HKLs) by lipoteichoic acid, lipopolysaccharide, and polyinosinic-polycytidylic acid in vitro. The recombinant shIL-20 protein induced the transcription of tumor necrosis factor α1 (TNF-α1), TNF-α2, IL-1β, and endogenous shIL-20, and promoted the proliferation of HKLs. In conclusion, these findings demonstrate that shIL-20 participates in the immune response to bacterial invasion and promotes leukocyte proliferation, offering new insights into the functions of fish IL-20 during pathogen invasion.
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Affiliation(s)
- Zhengwei Cui
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China; Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Xueqing Zhu
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Fei Zhao
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China.
| | - Dongqi Li
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Yuting Deng
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Aiping Tan
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Yingtiao Lai
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Zhibin Huang
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
| | - Hua Gong
- Key Laboratory of Fishery Drug Development of Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Aquatic Animal Immune Technology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China
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Piri R, Nøddeskou‐Fink AH, Gerke O, Larsson M, Edenbrandt L, Enqvist O, Høilund‐Carlsen P, Stochkendahl MJ. PET/CT imaging of spinal inflammation and microcalcification in patients with low back pain: A pilot study on the quantification by artificial intelligence-based segmentation. Clin Physiol Funct Imaging 2022; 42:225-232. [PMID: 35319166 PMCID: PMC9322590 DOI: 10.1111/cpf.12751] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 03/11/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Current imaging modalities are often incapable of identifying nociceptive sources of low back pain (LBP). We aimed to characterize these by means of positron emission tomography/computed tomography (PET/CT) of the lumbar spine region applying tracers 18 F-fluorodeoxyglucose (FDG) and 18 F-sodium fluoride (NaF) targeting inflammation and active microcalcification, respectively. METHODS Using artificial intelligence (AI)-based quantification, we compared PET findings in two sex- and age-matched groups, a case group of seven males and five females, mean age 45 ± 14 years, with ongoing LBP and a similar control group of 12 pain-free individuals. PET/CT scans were segmented into three distinct volumes of interest (VOIs): lumbar vertebral bodies, facet joints and intervertebral discs. Maximum, mean and total standardized uptake values (SUVmax, SUVmean and SUVtotal) for FDG and NaF uptake in the 3 VOIs were measured and compared between groups. Holm-Bonferroni correction was applied to adjust for multiple testing. RESULTS FDG uptake was slightly higher in most locations of the LBP group including higher SUVmean in the intervertebral discs (0.96 ± 0.34 vs. 0.69 ± 0.15). All NaF uptake values were higher in cases, including higher SUVmax in the intervertebral discs (11.63 ± 3.29 vs. 9.45 ± 1.32) and facet joints (14.98 ± 6.55 vs. 10.60 ± 2.97). CONCLUSION Observed intergroup differences suggest acute inflammation and microcalcification as possible nociceptive causes of LBP. AI-based quantification of relevant lumbar VOIs in PET/CT scans of LBP patients and controls appears to be feasible. These promising, early findings warrant further investigation and confirmation.
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Affiliation(s)
- Reza Piri
- Department of Nuclear MedicineOdense University HospitalOdenseDenmark
- Department of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
| | | | - Oke Gerke
- Department of Nuclear MedicineOdense University HospitalOdenseDenmark
- Department of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
| | | | - Lars Edenbrandt
- Department of Molecular and Clinical Medicine, Sahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Clinical PhysiologyRegion Västra Götaland, Sahlgrenska University HospitalGothenburgSweden
| | - Olof Enqvist
- Eigenvision ABMalmöSweden
- Department of Electrical EngineeringChalmers University of TechnologyGothenburgSweden
| | - Poul‐Flemming Høilund‐Carlsen
- Department of Nuclear MedicineOdense University HospitalOdenseDenmark
- Department of Clinical ResearchUniversity of Southern DenmarkOdenseDenmark
| | - Mette J. Stochkendahl
- Department of Sports Science and Clinical BiomechanicsUniversity of Southern DenmarkOdenseDenmark
- Chiropractic Knowledge HubOdenseDenmark
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10
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Du Y, Li J, Tang X, Liu Y, Bian G, Shi J, Zhang Y, Zhao B, Zhao H, Sui K, Xi Y. The Thermosensitive Injectable Celecoxib-Loaded Chitosan Hydrogel for Repairing Postoperative Intervertebral Disc Defect. Front Bioeng Biotechnol 2022; 10:876157. [PMID: 35837544 PMCID: PMC9274121 DOI: 10.3389/fbioe.2022.876157] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/18/2022] [Indexed: 11/13/2022] Open
Abstract
Percutaneous endoscopic lumbar discectomy has been widely used in clinical practice for lumbar spine diseases. But the postoperative disc re-herniation and inflammation are the main reason for pain recurrence after surgery. The postoperative local defect of the intervertebral disc will lead to the instability of the spine, further aggravating the process of intervertebral disc degeneration. In this work, we successfully synthesized the thermosensitive injectable celecoxib-loaded chitosan hydrogel and investigated its material properties, repair effect, biocompatibility, and histocompatibility in in vitro and in vivo study. In vitro and in vivo, the hydrogel has low toxicity, biodegradability, and good biocompatibility. In an animal experiment, this composite hydrogel can effectively fill local tissue defects to maintain the stability of the spine and delay the process of intervertebral disc degeneration after surgery. These results indicated that this composite hydrogel will be a promising way to treat postoperative intervertebral disc disease in future clinical applications.
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Affiliation(s)
- Yukun Du
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jianyi Li
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaojie Tang
- Department of Spinal Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Yingying Liu
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, China
| | - Guoshuai Bian
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, China
| | - Jianzhuang Shi
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, China
| | - Yixin Zhang
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
- Health Care Ward III, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Baomeng Zhao
- Department of Surgery teaching and research, Binzhou Medical University, Yantai, China
| | - Hongri Zhao
- Department of Spinal Surgery, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, China
| | - Kunyan Sui
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao, China
- *Correspondence: Kunyan Sui, ; Yongming Xi,
| | - Yongming Xi
- Department of Spinal Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
- *Correspondence: Kunyan Sui, ; Yongming Xi,
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11
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Ni S, Shan F, Geng J. Interleukin-10 family members: Biology and role in the bone and joint diseases. Int Immunopharmacol 2022; 108:108881. [PMID: 35623292 DOI: 10.1016/j.intimp.2022.108881] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 11/05/2022]
Abstract
Interleukin (IL)-10 family cytokines include IL-10, IL-19, IL-20, IL-22, IL-24, IL-26, IL-28A, IL-28B, and IL-29. These cytokines play crucial regulatory roles in various biological reactions and diseases. In recent years, several studies have shown that the IL-10 family plays a vital role in bone and joint diseases, including bone metabolic diseases, fractures, osteoarthritis, rheumatoid arthritis, and bone tumors. Herein, the recent progress on the regulatory role of IL-10 family of cytokines in the occurrence and development of bone and joint diseases has been summarized. This review will provide novel directions for immunotherapy of bone and joint diseases.
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Affiliation(s)
- Shenghui Ni
- Department of Orthopaedics, the Fourth Affiliated Hospital of China Medical University, Shenyang 110032, Liaoning, China
| | - Fengping Shan
- Department of Immunology, College of Basic Medical Science, China Medical University, Shenyang 110122, Liaoning, China
| | - Jin Geng
- Department of Ophthalmology, the First Hospital of China Medical University, Shenyang, 110001, Liaoning, China.
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12
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Wang J, Lu Q, Mackay MJ, Liu X, Feng Y, Burton DC, Asher MA. Spontaneous Facet Joint Osteoarthritis in NFAT1-Mutant Mice: Age-Dependent Histopathologic Characteristics and Molecular Mechanisms. J Bone Joint Surg Am 2022; 104:928-940. [PMID: 35167509 PMCID: PMC9208959 DOI: 10.2106/jbjs.21.00960] [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: 02/01/2023]
Abstract
BACKGROUND Facet joint (FJ) osteoarthritis (FJOA) is a widely prevalent spinal disorder but its pathogenesis remains unclear, largely due to the difficulties in conducting longitudinal human studies and lack of spontaneous-FJOA animal models for mechanistic investigations. This study aimed to investigate whether spontaneous FJOA occurs in mice bearing mutant NFAT1 (nuclear factor of activated T cells 1) transcription factor. METHODS The lumbar FJs of 50 NFAT1-mutant mice and of 50 wild-type control mice, of both sexes, were examined by histopathology, quantitative gene expression analysis, semiquantitative immunohistochemistry, and a novel FJOA scoring system for semiquantitative assessment of the histopathologic changes at 2, 6, 12, and 18 months of age. Age-dependent and tissue-specific histopathologic and gene or protein expression changes were analyzed statistically. RESULTS FJs in NFAT1-mutant mice displayed significantly increased expression of specific catabolic genes (p < 0.05) and proteins (p < 0.001) in cartilage and synovium as early as 2 months of age, followed by early osteoarthritic structural changes such as articular surface fissuring and chondro-osteophyte formation at 6 months. More severe cartilage lesions, osteophytes, subchondral bone changes, synovitis, and tissue-specific molecular alterations in FJs of NFAT1-mutant mice were observed at 12 and 18 months. Osteoarthritic structural changes were not detected in FJs of wild-type mice at any ages, although age-related cartilage degeneration was observed at 18 months. The novel FJOA scoring system had high intraobserver and interobserver reproducibility (correlation coefficients: r > 0.97). Whole-joint FJOA scoring showed significantly higher OA scores in FJs of NFAT1-mutant mice compared with wild-type mice at all time points (p = 0.0033 at 2 months, p = 0.0001 at 6 months, p < 0.0001 at 12 and 18 months). CONCLUSIONS This study has identified the NFAT1-mutant mouse as a novel animal model of spontaneous FJOA with age-dependent and slowly progressing osteoarthritic features, developed the first FJOA scoring system, and elucidated the molecular mechanisms of NFAT1 mutation-induced FJOA. CLINICAL RELEVANCE This murine FJOA model resembles the features of human FJOA and may provide new insights into the pathogenesis of and therapeutic strategies for FJOA in humans.
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Affiliation(s)
- Jinxi Wang
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA,Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA,Correspondence to: Jinxi Wang, MD, PhD, Department of Orthopedic Surgery, University of Kansas Medical Center, 3901 Rainbow Boulevard, MS #3017, Kansas City, KS 66160, USA, Tel: 913-588-0870, Fax: 913-945-7773,
| | - Qinghua Lu
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Matthew J. Mackay
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Xiangliang Liu
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Yi Feng
- Harrington Laboratory for Molecular Orthopedics, Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA,Current address: Adams School of Dentistry, University of North Carolina at Chapel Hill, NC 27599, USA
| | - Douglas C. Burton
- Marc A. Asher MD Comprehensive Spine Center and Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Marc A. Asher
- Marc A. Asher MD Comprehensive Spine Center and Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS 66160, USA
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13
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Fan N, Yuan S, Hai Y, Du P, Li J, Kong X, Zhu W, Liu Y, Zang L. Identifying the potential role of IL-1β in the molecular mechanisms of disc degeneration using gene expression profiling and bioinformatics analysis. J Orthop Surg (Hong Kong) 2022; 30:23094990211068203. [PMID: 35042389 DOI: 10.1177/23094990211068203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
PURPOSE We performed a bioinformatics analysis to identify the key genes that were differentially expressed between degenerative intervertebral disc (IVD) cells with and without exposure to interleukin-1β and explore the related signaling pathways and interaction networks. METHODS The microarray data were downloaded from the Gene Expression Omnibus (27,494). Then, analyses of the gene ontology, signaling pathways, and interaction networks for the differentially expressed genes (DEGs) were conducted using tools including the Database for Annotation, Visualization, and Integrated Discovery, Metascape, Gene Set Enrichment Analysis, Search Tool for the Retrieval of Interacting Genes, Cytoscape, Venn method, and packages of the R computing language. RESULTS A total of 260 DEGs were identified, including 161 upregulated and 99 downregulated genes. Gene Ontology annotation analysis showed that these DEGs were mainly associated with the extracellular region, chemotaxis, taxis, cytokine activity, and cytokine receptor binding. A Kyoto Encyclopedia of Genes and Genomes signaling pathway analysis showed that these DEGs were mainly involved in the of cytokine-cytokine receptor interaction, rheumatoid arthritis, tumor necrosis factor signaling pathway, Salmonella infection, and chemokine signaling pathway. The interaction network analysis indicated that 10 hub genes, including CXCL8, CXCL1, CCL20, CXCL2, CXCL5, CXCL3, CXCL6, C3, PF4, and GPER1 may play key roles in IVD degeneration. CONCLUSIONS Bioinformatic analysis showed that CXCL8 and other nine key genes may play a role in the development of disc degeneration induced by inflammatory reactions and can be used to identify potential target genes for therapeutic applications in IVD degeneration.
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Affiliation(s)
- Ning Fan
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Shuo Yuan
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yong Hai
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Peng Du
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Jian Li
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Xiaochuan Kong
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Wenyi Zhu
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yuzeng Liu
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Lei Zang
- Department of Orthopedics, 74639Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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14
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Zhang J, Xu Y, Ding W, Zhao M, Liu J, Ye J, Wang Z, Ye D, Wang M, Wan J. Increased expression of IL-20 is associated with ischemic cardiomyopathy and acute myocardial infarction. Biomark Med 2021; 15:1641-1650. [PMID: 34704818 DOI: 10.2217/bmm-2020-0529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: The expression and clinical significance of IL-20 in coronary artery diseases needs to be analyzed. Methods: IL-20 and its receptors were analyzed in coronary artery tissues. In a separate study, plasma IL-20 was also evaluated. Results: IL-20 and its receptors were significantly higher in coronary artery stenosis tissues from ischemic cardiomyopathy patients than that from controls. T lymphocytes and macrophages were the main source of IL-20 and expressed its receptors abundantly. Plasma IL-20 was significantly higher in acute myocardial infarction patients than that in controls. Conclusion: IL-20 was closely associated with the presence of acute myocardial infarction. IL-20 may participate in the progression of coronary artery stenosis and plaque vulnerability via regulating T lymphocytes and macrophages.
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Affiliation(s)
- Jishou Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Yao Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Wen Ding
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Mengmeng Zhao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Jianfang Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Jing Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Zhen Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Di Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Menglong Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
| | - Jun Wan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.,Cardiovascular Research Institute, Wuhan University, Wuhan, China.,Hubei Key Laboratory of Cardiology, Wuhan, 430060, China
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15
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Wu YR, Hsing CH, Chiu CJ, Huang HY, Hsu YH. Roles of IL-1 and IL-10 family cytokines in the progression of systemic lupus erythematosus: Friends or foes? IUBMB Life 2021; 74:143-156. [PMID: 34668305 DOI: 10.1002/iub.2568] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/03/2021] [Accepted: 09/28/2021] [Indexed: 12/20/2022]
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease of unknown etiology that can affect nearly every organ system in the body. Besides genetic and environmental factors, unbalanced pro-inflammatory and anti-inflammatory cytokines contribute to immune dysregulation, trigger an inflammatory response, and induce tissue and organ damage. Inflammatory responses in SLE can be promoted and/or maintained by the availability of cytokines that are overproduced systemically and/or in local tissues. Several key cytokines have been considered potential targets for the reduction of chronic inflammation in SLE. Recent studies indicated that dysregulated production of several cytokines, including those of the IL-1 family and IL-10 family, orchestrate immune activation and self-tolerance, play critical roles in the pathogenesis of SLE. Among IL-1 family cytokines, IL-1, IL-18, IL-33, IL-36, IL-37, and IL-38 had been the most thoroughly investigated in SLE. Additionally, IL-10 family cytokines, IL-10, IL-20, IL-22, IL-26, IL-28, and IL-29 are dysregulated in SLE. Therefore, a better understanding of the initiation and progression of SLE may provide suitable novel targets for therapeutic intervention. In this review, we discuss the involvement of inflammation in the pathogenesis of SLE, with a focus on IL-1 family and IL-10 family cytokines, and highlight pathophysiological approaches and therapeutic potential for treating SLE.
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Affiliation(s)
- Yi-Rou Wu
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chung-Hsi Hsing
- Department of Anesthesiology, Chi Mei Medical Center, Tainan, Taiwan.,Department of Medical Research, Chi Mei Medical Center, Tainan, Taiwan
| | - Chiao-Juno Chiu
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsin-Yi Huang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Hsiang Hsu
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Clinical Medicine Research Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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16
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Chen W, Xing J, Liu X, Wang S, Xing D. The role and transformative potential of IL-19 in atherosclerosis. Cytokine Growth Factor Rev 2021; 62:70-82. [PMID: 34600839 DOI: 10.1016/j.cytogfr.2021.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 12/19/2022]
Abstract
Atherosclerotic cardiovascular disease is the leading cause of death worldwide. Traditionally, IL-19 was thought to be expressed in only immune cells, but studies revealed that IL-19 is also expressed in multiple atherosclerotic plaque cell types, but not normal arteries, in humans and mice. IL-19 reduces the development of atherosclerosis via multiple mechanisms, including balancing cholesterol metabolism; enhancing Th2 immune cell polarization; reducing the inflammatory response; and reducing the proliferation, migration and chemotaxis of vascular smooth muscle cells (VSMCs). Clinical and/or animal studies have primarily aimed to achieve regression and/or stabilization of atherosclerotic plaques, with regression in particular indicating a very good drug response. Most antiatherosclerotic drugs in current clinical use, including atorvastatin and alirocumab, target hyperlipidemia. Several other drugs have also been investigated in clinical trials as anti-inflammatory agents; the development of some of these agents has been terminated (canakinumab, darapladib, varespladib, losmapimod, atreleuton, setileuton, PF-04191834, veliflapon, and methotrexate), but others remain in development (ziltivekimab, tocilizumab, Somalix, IFM-2427, anakinra, mesenchymal stem cells (MSCs), colchicine, everolimus, allopurinol, and montelukast). Most of the tested drugs have shown a limited ability to reverse atherosclerosis in animal studies. Interestingly, recombinant IL-19 (rIL-19) was shown to reduce atherosclerosis development in a time- and dose-dependent manner. A low dose of rIL-19 (1 ng/g/day) reduced aortic arch and root plaque areas by 70.1% and 32.1%, respectively, in LDLR-/- mice. At 10 ng/g/day, rIL-19 completely eliminated atherosclerotic plaques. There were no sex differences in the effects of rIL-19 on atherosclerotic mice. Thus, low-dose rIL-19 is an effective antiatherosclerotic agent, in addition to its efficacy in intimal hyperplasia, spinal cord injury, stroke, and multiple sclerosis. We propose that IL-19 is a promising biomarker and target for the diagnosis and treatment of atherosclerosis. This review considers the role and mechanism of action of IL-19 in atherosclerosis and discusses whether IL-19 is a potential therapeutic target for this condition.
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Affiliation(s)
- Wujun Chen
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China
| | - Jiyao Xing
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China
| | - Xinlin Liu
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China
| | - Shuai Wang
- School of Medical Imaging, Radiotherapy Department, Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261053, China.
| | - Dongming Xing
- Cancer Institute, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao Cancer Institute, Qingdao, Shandong 266071, China; School of Life Sciences, Tsinghua University, Beijing 100084, China.
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17
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Dayton JR, Yuan Y, Pacumio LP, Dorflinger BG, Yoo SC, Olson MJ, Hernández-Suárez SI, McMahon MM, Cruz-Orengo L. Expression of IL-20 Receptor Subunit β Is Linked to EAE Neuropathology and CNS Neuroinflammation. Front Cell Neurosci 2021; 15:683687. [PMID: 34557075 PMCID: PMC8452993 DOI: 10.3389/fncel.2021.683687] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 08/13/2021] [Indexed: 12/24/2022] Open
Abstract
Considerable clinical evidence supports that increased blood-brain barrier (BBB) permeability is linked to immune extravasation of CNS parenchyma during neuroinflammation. Although BBB permeability and immune extravasation are known to be provoked by vascular endothelial growth factor-A (i.e., VEGF-A) and C-X-C motif chemokine ligand 12 (CXCL12), respectively, the mechanisms that link both processes are still elusive. The interleukin-20 (i.e., IL-20) cytokine signaling pathway was previously implicated in VEGF-mediated angiogenesis and is known to induce cellular response by way of signaling through IL-20 receptor subunit β (i.e., IL-20RB). Dysregulated IL-20 signaling is implicated in many inflammatory pathologies, but it's contribution to neuroinflammation has yet to be reported. We hypothesize that the IL-20 cytokine, and the IL cytokine subfamily more broadly, play a key role in CNS neuroinflammation by signaling through IL-20RB, induce VEGF activity, and enhance both BBB-permeability and CXCL12-mediated immune extravasation. To address this hypothesis, we actively immunized IL-20RB-/- mice and wild-type mice to induce experimental autoimmune encephalomyelitis (EAE) and found that IL-20RB-/- mice showed amelioration of disease progression compared to wild-type mice. Similarly, we passively immunized IL-20RB-/- mice and wild-type mice with myelin-reactive Th1 cells from either IL-20RB-/- and wild-type genotype. Host IL-20RB-/- mice showed lesser disease progression than wild-type mice, regardless of the myelin-reactive Th1 cells genotype. Using multianalyte bead-based immunoassay and ELISA, we found distinctive changes in levels of pro-inflammatory cytokines between IL-20RB-/- mice and wild-type mice at peak of EAE. We also found detectable levels of all cytokines of the IL-20 subfamily within CNS tissues and specific alteration to IL-20 subfamily cytokines IL-19, IL-20, and IL-24, expression levels. Immunolabeling of CNS region-specific microvessels confirmed IL-20RB protein at the spinal cord microvasculature and upregulation during EAE. Microvessels isolated from macaques CNS tissues also expressed IL-20RB. Moreover, we identified the expression of all IL-20 receptor subunits: IL-22 receptor subunit α-1 (IL-22RA1), IL-20RB, and IL-20 receptor subunit α (IL-20RA) in human CNS microvessels. Notably, human cerebral microvasculature endothelial cells (HCMEC/D3) treated with IL-1β showed augmented expression of the IL-20 receptor. Lastly, IL-20-treated HCMEC/D3 showed alterations on CXCL12 apicobasal polarity consistent with a neuroinflammatory status. This evidence suggests that IL-20 subfamily cytokines may signal at the BBB via IL-20RB, triggering neuroinflammation.
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Affiliation(s)
- Jacquelyn R Dayton
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States
| | - Yinyu Yuan
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States
| | - Lisa P Pacumio
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States
| | - Bryce G Dorflinger
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States
| | - Samantha C Yoo
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States
| | - Mariah J Olson
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States
| | - Sara I Hernández-Suárez
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States.,Bayer School of Natural and Environmental Sciences, Duquesne University of the Holy Spirit, Pittsburgh, PA, United States
| | - Moira M McMahon
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States.,Department of Molecular and Cell Biology, College of Letters and Science, University of California, Berkeley, Berkeley, CA, United States
| | - Lillian Cruz-Orengo
- Department of Anatomy, Physiology and Cell Biology, University of California, Davis, Davis, CA, United States
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18
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Zhang GZ, Deng YJ, He XG, Ren EH, Wu ZL, Yang FG, Yang L, Ma ZJ, Gao YC, Guo XD, Wang YD, Liu MQ, Zhu DX, Kang XW. Different Types of Double-Level Degenerative Lumber Spondylolisthesis: What Is Different in the Sagittal Plane? World Neurosurg 2021; 150:e127-e134. [PMID: 33684582 DOI: 10.1016/j.wneu.2021.02.125] [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] [Received: 12/08/2020] [Revised: 02/23/2021] [Accepted: 02/26/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Degenerative lumber spondylolisthesis (DLS) is a common orthopedic condition, described as a condition that compared with the lower vertebra, the superior vertebra slides forward or backward in the sagittal plane without accompanying isthmic spondylolisthesis. Information pertaining to different types of double-level DLS is scarce. This study aims to analyze parameters of patients with different types of double-level DLS to provide a reference for guiding surgical treatment and restoring sagittal balance of patients with DLS. METHODS From January 2014 to January 2020, records of patients with double-level DLS were retrospectively reviewed. Patients with double-level DLS were divided into 3 types: anterior, posterior, and combined; the anterior and combined types were studied. The sagittal spinopelvic parameters included C7 tilt, maximal thoracic kyphosis, maximal lumbar lordosis (LLmax), pelvic incidence (PI), pelvic tilt (PT), and sacral slope (SS). After descriptive analysis, demographic and radiographic data were compared. RESULTS Forty and 18 patients were included in the anterior and combined type groups, respectively. Both groups had different levels of chronic low back pain, but the incidence of radiating leg pain and neurogenic claudication was significantly higher in the anterior type. Oswestry Disability Index and visual analog scale low back scores were also higher in the anterior type. In the anterior type, C7 tilt (7.14 ± 2.15 vs. 5.41 ± 2.28, P = 0.007), LLmax (50.02 ± 14.76 vs. 36.96 ± 14.56, P = 0.003), PI (68.28 ± 9.16 vs. 55.53 ± 14.19, P < 0.001), PT (28.68 ± 7.31 vs. 19.38 ± 4.70, P < 0.001), and PT/PI (42.45 ± 11.22 vs. 36.04 ± 9.87, P = 0.041) were significantly higher. In the anterior type, PI correlated positively with LLmax (r = 0.59) and SS (r = 0.71). LLmax and SS (r = 0.65) had a positive correlation. PT/PI and SS (r = -0.77) had a negative correlation. In the combined type, PI correlated positively with LLmax (r = 0.61) and SS (r = 0.88), and PT/PI correlated negatively with SS (r = -0.81). CONCLUSIONS In patients with double-level DLS, the sagittal spinopelvic parameters differed between the anterior and combined types. Overall, spinal surgeons should focus on correcting sagittal deformities, relieving postoperative clinical symptoms, and improving quality of life during fusion surgery.
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Affiliation(s)
- Guang-Zhi Zhang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Ya-Jun Deng
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Xue-Gang He
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - En-Hui Ren
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Zuo-Long Wu
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Feng-Guang Yang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Liang Yang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Zhan-Jun Ma
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Yi-Cheng Gao
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Xu-Dong Guo
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Yi-Dian Wang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Ming-Qiang Liu
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Da-Xue Zhu
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Xue-Wen Kang
- The Second Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China; Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, Gansu, China; The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, Gansu, China.
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19
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Zhang J, Liu J, Zhao M, Ye J, Xu Y, Wang Z, Ye D, Ding W, Li D, Liu M, Wang M, Wan J. The expression of interleukin 20 increases in plasma and aortic tissues from patients with acute aortic dissection. Clin Chim Acta 2020; 510:373-380. [PMID: 32730761 DOI: 10.1016/j.cca.2020.07.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/07/2020] [Accepted: 07/23/2020] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Acute aortic dissection (AAD) is the most devasting cardiovascular disease associated with high mortality. The occurrence and progression of AAD can be regulated by inflammatory processes, and further understanding of this inflammatory pathogenesis may improve the treatment of AAD. Interleukin 20 (IL-20), as an inflammatory mediator, has been demonstrated to be associated with several inflammatory diseases. However, the association between IL and 20 and AAD is still unknown. METHODS Five aortic dissection tissue samples and five control aortic tissue samples were evaluated in our study. The expression of IL-20 and its receptor subunits (IL-20Rα and IL-20Rβ) was detected by immunofluorescence staining. From January 2018 to March 2018, 70 consecutive AAD patients and 25 non-AAD (NAD) patients were enrolled in this study. Diagnosis was based on computed tomography angiography (CTA) results. Blood samples were obtained from the patients on the first day of hospitalization. Plasma IL-20, TNF-α and IL-6 concentrations were evaluated with enzyme-linked immunosorbent assay (ELISA) kits. RESULTS The expression levels of IL-20 and its receptor subunits (IL-20Rα and IL-20Rβ) were increased in the sites of arterial wall dissection in the AAD patients. In a separate group, the plasma IL-20, TNF-α and IL-6 concentrations were significantly higher in the AAD patients than in the non-AAD patients. Spearman's correlation analysis showed that plasma IL-20 was positively correlated with plasma TNF-α and IL-6, D-dimer, C-reaction protein (CRP), creatinine, fasting blood glucose, systolic blood pressure (SBP), and diastolic blood pressure (DBP). Multiple linear regression revealed that IL-20, in addition to IL-6, glucose, CRP and D-dimer, was independently associated with the presence of AAD. CONCLUSION IL-20 was closely associated with the presence of AAD. IL-20 may contribute to the inflammatory pathogenesis of AAD.
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Affiliation(s)
- Jishou Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Jianfang Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Mengmeng Zhao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Jing Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Yao Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Zhen Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Di Ye
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Wen Ding
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China
| | - Dan Li
- Pediatric Department, Renmin Hospital of Wuhan University, Wuhan, China
| | - Menglin Liu
- Emergency Department, Renmin Hospital of Wuhan University, Wuhan, China
| | - Menglong Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China.
| | - Jun Wan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China; Cardiovascular Research Institute, Wuhan University, Wuhan, China; Hubei Key Laboratory of Cardiology, Wuhan 430060, China.
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20
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Hu W, Kan S, Liu G, Cao Z, Zhu R. The expression of P16 and S100 associated with elastin degradation and fibrosis of the Ligamentum Flavum hypertrophy. BMC Musculoskelet Disord 2019; 20:458. [PMID: 31638980 PMCID: PMC6805382 DOI: 10.1186/s12891-019-2825-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 09/12/2019] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND One of the characteristics of lumbar spinal stenosis (LSS) is elastin degradation and fibrosis in the ligamentum flavum (LF). However, the biochemical factors that cause these histologic changes is unclear. P16 and S100 participate in scar formation and collagen development in wound healing and fibrosis diseases. In this study, we investigate the association between P16 and S100 expression and the fibrosis of the hypertrophic LF in LSS. METHODS The LF specimens were surgically obtained from 30 patients with single-segment LSS (SLSS), 30 patients with double-segment LSS (DLSS) and 30 patients with L4/5 lumbar disc herniation (LDH). The LF thickness was measured by axial T1-weighted MRI. The extent of LF elastin degradation and fibrosis were graded based on hematoxylin-eosin (HE) and Verhoff's Van Gieson's (VVG) stain, respectively. The localization of P16 and S100 was determined by immunohistochemistry. RESULTS The Absolute and relative LF thickness were greater in the DLSS group compared with the SLSS and LDH groups (p < 0.05). The elastic tissue from the dorsal aspect to the dural aspect in SLSS and DLSS groups was significantly increased. The amount of collagen deposition and elastic tissue is significantly higher in the DLSS group compared with the SLSS and LDH groups (p < 0.05). The specimens in the DLSS group showed positive staining of P16, especially in the dorsal layer. Almost all samples in the SLSS group were partially positive for P16. The LDH group showed negative staining of P16 in both the dural and dorsal layers. All the three groups were stained with S100 in the dorsal layer of the LF. On the contrary, S100 staining was absent in the dural layer of the LF in the three groups. CONCLUSIONS Elastin degradation and fibrosis of the LF in the DLSS patients is more severe compared with the SLSS and LDH patients. Increased expression of P16 associated with LF fibrosis and thickness, suggested that the expression of P16 may related to LF hypertrophy in the patients who suffer with LSS. LF hypertrophy process may not be associated with high expression of S100.
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Affiliation(s)
- Wei Hu
- Department of Spine Surgery, Tianjin Union Medical Center, Tianjin, 300121, China
| | - Shunli Kan
- Department of Spine Surgery, Tianjin Union Medical Center, Tianjin, 300121, China
| | - Guang Liu
- Department of Pathology, Tianjin Union Medical Center, Tianjin, 300121, China
| | - Zegang Cao
- Department of Spine Surgery, Tianjin Union Medical Center, Tianjin, 300121, China
| | - Rusen Zhu
- Department of Spine Surgery, Tianjin Union Medical Center, Tianjin, 300121, China.
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