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Jantaboon S, Sakunrangsit N, Toejing P, Leelahavanichkul A, Pisitkun P, Greenblatt MB, Lotinun S. Lipopolysaccharide Impedes Bone Repair in FcγRIIB-Deficient Mice. Int J Mol Sci 2023; 24:16944. [PMID: 38069267 PMCID: PMC10707393 DOI: 10.3390/ijms242316944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/27/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
Chronic inflammation contributes to the development of skeletal disorders in patients with systemic lupus erythematosus (SLE). Activation of the host immune response stimulates osteoclast activity, which in turn leads to bone loss. Regenerating bone in the inflammatory microenvironments of SLE patients with critical bone defects remains a great challenge. In this study, we utilized lipopolysaccharide (LPS) to imitate locally and systemically pathogenic bacterial infection and examined the bone regeneration performance of LPS-associated mandibular and tibial bone regeneration impairment in FcγRIIB-/- mice. Our results indicated that a loss of FcγRIIB alleviates bone regeneration in both mandibles and tibiae. After LPS induction, FcγRIIB-/- mice were susceptible to impaired fracture healing in tibial and mandibular bones. LPS decreased the mineralization to collagen ratio in FcγRIIB-/- mice, indicating a mineralization defect during bone repair. An osteoblast-associated gene (Col1a1) was attenuated in FcγRIIB-deficient mice, whereas Bglap, Hhip, and Creb5 were further downregulated with LPS treatment in FcγRIIB-/- mice compared to FcγRIIB-/- mice. Alpl and Bglap expression was dcreased in osteoblasts derived from bone chips. An osteoclast-associated gene, Tnfsf11/Tnfrsf11 ratio, ewas increased in LPS-induced FcγRIIB-/- mice and in vitro. Furthermore, systemic LPS was relatively potent in stimulating production of pro-inflammatory cytokines including TNF-α, IL-6, and MCP-1 in FcγRIIB-/- mice compared to FcγRIIB-/- mice. The levels of TNF-α, IFN-β, IL-1α, and IL-17A were increased, whereas IL-10 and IL-23 were decreased in FcγRIIB-/- mice treated locally with LPS. These findings suggest that both local and systemic LPS burden can exacerbate bone regeneration impairment, delay mineralization and skeletal repair, and induce inflammation in SLE patients.
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Affiliation(s)
- Sirikanda Jantaboon
- Interdisciplinary Program of Physiology, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Nithidol Sakunrangsit
- Center of Excellence in Skeletal Disorders and Enzyme Reaction Mechanism, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand (P.T.)
| | - Parichart Toejing
- Center of Excellence in Skeletal Disorders and Enzyme Reaction Mechanism, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand (P.T.)
| | - Asada Leelahavanichkul
- Division of Immunology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Prapaporn Pisitkun
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand;
| | - Matthew B. Greenblatt
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine and Research Division, Hospital for Special Surgery, New York, NY 10065, USA;
| | - Sutada Lotinun
- Center of Excellence in Skeletal Disorders and Enzyme Reaction Mechanism, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand (P.T.)
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Erazo-Martínez V, Alejandro-Posso J, Medellín C, Kaimoto M, Cañas CA, Tobón GJ. Rheumatological diseases in patients with primary hyperparathyroidism. Rheumatology (Oxford) 2022; 61:e358-e359. [PMID: 35640924 DOI: 10.1093/rheumatology/keac303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/11/2022] [Accepted: 05/13/2022] [Indexed: 01/11/2023] Open
Affiliation(s)
| | | | | | | | - Carlos A Cañas
- Universidad Icesi, CIRAT: Centro de Investigación en Reumatología, Autoinmunidad y Medicina Traslacional.,Fundación Valle del Lili, Unidad de Reumatología, Cali, Colombia
| | - Gabriel J Tobón
- Department of Medical Microbiology, Immunology and Cell Biology, Southern Illinois University School of Medicine, Springfield, IL, USA
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Fanlo-Maresma M, Esteve-Luque V, Pintó X, Padró-Miquel A, Corbella E, Candás-Estébanez B. Study of common hypertriglyceridaemia genetic variants and subclinical atherosclerosis in a group of women with SLE and a control group. Lupus Sci Med 2022; 9:9/1/e000774. [PMID: 35999016 PMCID: PMC9403106 DOI: 10.1136/lupus-2022-000774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/10/2022] [Indexed: 11/04/2022]
Abstract
OBJECTIVE SLE is associated with increased cardiovascular risk (CVR). High serum concentrations of triglyceride-rich lipoproteins and apolipoprotein B-rich particles constitute the characteristic dyslipidaemia of SLE. METHODS A cross-sectional study was conducted to study the relationship between genetic variants involved in polygenic hypertriglyceridaemia, subclinical atherosclerosis and lipoprotein abnormalities. 73 women with SLE and 73 control women age-matched with the case group were recruited (age range 30-75 years). Serum analysis, subclinical atherosclerosis screening studies for the detection of plaque, and genetic analysis of the APOE, ZPR1, APOA5 and GCKR genes were performed. RESULTS Triglyceride concentrations and the prevalence of hypertension, dyslipidaemia and carotid atherosclerosis were higher in women with SLE than in the control group. Multivariate logistic regression showed that CC homozygosity for the GCKR rs1260326 gene (OR=0.111, 95% CI 0.015 to 0.804, p=0.030) and an increase of 1 mmol/L in triglyceride concentrations were associated with a greater risk of carotid plaque in women with SLE (OR=7.576, 95% CI 2.415 to 23.767, p=0.001). CONCLUSIONS GCKR CC homozygosity (rs1260326) and serum triglyceride concentrations are independently associated with subclinical carotid atherosclerosis in women with SLE. Subclinical carotid atherosclerosis is also more prevalent in these women compared with the control group. The study of GCKR rs1260326 gene variants may contribute to more precise assessment of CVR and modulation of the intensity of lipid-lowering treatment in patients with SLE.
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Affiliation(s)
- Marta Fanlo-Maresma
- Vascular Risk Unit, Internal Medicine Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain
| | - Virginia Esteve-Luque
- Vascular Risk Unit, Internal Medicine Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain
| | - Xavier Pintó
- Vascular Risk Unit, Internal Medicine Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain
| | - Ariadna Padró-Miquel
- Vascular Risk Unit, Internal Medicine Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain
| | - Emili Corbella
- Vascular Risk Unit, Internal Medicine Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain
| | - Beatriz Candás-Estébanez
- Vascular Risk Unit, Internal Medicine Department, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Spain
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Liu Y, Yu X, Zhang W, Zhang X, Wang M, Ji F. Mechanistic insight into premature atherosclerosis and cardiovascular complications in systemic lupus erythematosus. J Autoimmun 2022; 132:102863. [PMID: 35853760 DOI: 10.1016/j.jaut.2022.102863] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/02/2022] [Indexed: 12/12/2022]
Abstract
Systemic lupus erythematosus (SLE) is associated with a significant risk of cardiovascular disease (CVD), which substantially increases disease mortality and morbidity. The overall mechanisms associated with the development of premature atherosclerosis and CVD in SLE remain unclear, but has been considered as a result of an intricate interplay between the profound immune dysregulation and traditional CVD risk factors. Aberrant systemic inflammation in SLE may lead to an abnormal lipid profile and dysfunction, which can further fuel the pro-atherosclerotic environment. The existence of a strong imbalance between endothelial damage and vascular repair/angiogenesis promotes vascular injury, which is the early step in the progression of atherosclerotic CVD. Profound innate and adaptive immune dysregulation, characterized by excessive type I interferon burden, aberrant macrophage, platelet and complements activation, neutrophil dysregulation and neutrophil extracellular traps formation, uncontrolled T cell activation, and excessive autoantibody production and immune complex formation, have been proposed to promote accelerated CVD in SLE. While designing targeted therapies to correct the dysregulated immune activation may be beneficial in the treatment of SLE-related CVD, much additional work is needed to determine how to translate these findings into clinical practice. Additionally, a number of biomarkers display diagnostic potentials in improving CVD risk stratification in SLE, further prospective studies will help understand which biomarker(s) will be the most impactful one(s) in assessing SLE-linked CVD. Continued efforts to identify novel mechanisms and to establish criteria for assessing CVD risk as well as predicting CVD progression are in great need to improve CVD outcomes in SLE.
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Affiliation(s)
- Yudong Liu
- Department of Rheumatology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China; The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Xue Yu
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Wenduo Zhang
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Xuan Zhang
- Department of Rheumatology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Min Wang
- Department of Rheumatology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China
| | - Fusui Ji
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, 100730, PR China.
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Milk Fat Globule Epidermal Growth Factor 8 (MFGE8) Gene Variants in Rheumatoid Arthritis and Sjögren's Syndrome. J Clin Med 2022; 11:jcm11051180. [PMID: 35268273 PMCID: PMC8911132 DOI: 10.3390/jcm11051180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 02/04/2023] Open
Abstract
Milk Fat Globule Epidermal Growth Factor 8 (MFGE8) deficiency and gene polymorphisms have been previously linked to systemic lupus erythematosus (SLE)-like and SLE development. Our aim was to explore whether four MFGE8 variants and MFGE8 serum levels are associated with autoimmunity susceptibility and autoimmune related atherosclerosis. DNA from 107 primary Sjogren's syndrome (SS), 116 rheumatoid arthritis (RA) and 123 SLE patients as well as 199 HC were genotyped for the MFGE8 rs2271715, rs1878326, rs4945, rs3743388 variants by RFLP-PCR. MFGE8 serum levels were measured by ELISA. The CA genotype of rs4945 variant exhibited a protective effect against RA development, a finding not confirmed in the SS and SLE populations. The CACG haplotype exhibited a protective effect in both RA and SS patients compared to HC. Primary SS patients with IMT ≤ 0.9 mm displayed higher MGFE8 serum levels compared to those with ˃0.9 mm. Here, we report a novel association of MFGE8 variants in SS and RA susceptibility, as well as reduced MFGE8 serum levels in SS patients with heightened atherosclerotic risk.
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Skarlis C, Raftopoulou S, Mavragani CP. Sjogren's Syndrome: Recent Updates. J Clin Med 2022; 11:399. [PMID: 35054094 PMCID: PMC8778847 DOI: 10.3390/jcm11020399] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 01/19/2023] Open
Abstract
Primary Sjögren's syndrome (SS) is a chronic systemic autoimmune disorder affecting primarily perimenopausal women [...].
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Affiliation(s)
- Charalampos Skarlis
- Department of Physiology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (C.S.); (S.R.)
| | - Sylvia Raftopoulou
- Department of Physiology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (C.S.); (S.R.)
| | - Clio P. Mavragani
- Department of Physiology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece; (C.S.); (S.R.)
- Fourth Department of Internal Medicine, School of Medicine, University Hospital Attikon, National and Kapodistrian University of Athens, Haidari, 12462 Athens, Greece
- Joint Academic Rheumatology Program, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
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Ammar Y, Mohamed A, Khalil G, Maharem D. Accelerated Atherosclerosis in Systemic Lupus Erythematosus: Role of Fibroblast Growth Factor 23- Phosphate Axis. Int J Nephrol Renovasc Dis 2021; 14:331-347. [PMID: 34475774 PMCID: PMC8407679 DOI: 10.2147/ijnrd.s326399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/05/2021] [Indexed: 01/16/2023] Open
Abstract
PURPOSE Despite management advances, accelerated atherosclerotic cardiovascular disease (ACVD) remains a major cause of morbimortality in systemic lupus erythematosus (SLE) patients; that is not fully explained by traditional risk factors. Fibroblast growth factor-23 (FGF23) is a bone-derived phosphaturic hormone with multiple klotho-dependent and independent effects, including promotion of atherosclerosis and vascular calcification, particularly in the context of chronic kidney disease. Increased circulating FGF23 was reported in SLE patients, particularly with lupus nephritis (LN); but its atherogenic role in these disorders was not explored. SUBJECTS AND METHODS Three study groups of predominantly middle-aged females were categorized by the 2012 SLE International Collaborating Clinics (SLICC) criteria as SLE (without LN), LN, or controls matching for traditional CVD risk profile. Measures of SLE activity, damage, steroid therapy, and glomerular filtration rate were calculated. Fasting blood samples were checked for serum lipid profile, anti-DNA, urea, creatinine, uric acid, proteins, albumin, calcium, phosphorus, C3, C4, CRP, vitamin-D3, intact parathyroid hormone and FGF23 (iFGF23). By carotid ultrasonography, mean common carotid artery intima-media thickness (CC-IMT), plaque score (PS) and internal carotid resistive index (ICRI) were recorded. RESULTS CC-IMT, ICRI and serum iFGF23 differed along the study groups (LN>SLE>controls). In both SLE and LN patients, serum iFGF23 had a significant positive correlation with serum phosphorus, CC-IMT and PS. On multivariate analysis, the strongest predictor of increased CC-IMT was cumulative steroid dose in SLE and serum iFGF23 in LN patients. Most significant independent predictors of increased serum iFGF23 were hyperphosphatemia in SLE and proteinuria in LN patients. CONCLUSION FGF23-phosphate axis has a key role in accelerated ACVD in SLE patients. Serum phosphorus and iFGF23 should be included in ACVD risk profile assessment of these patients. Prospective studies shall define the role of dietary and/or pharmacologic control of hyperphosphatemia and proteinuria in reducing circulating iFGF23 and ACVD in them.
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Affiliation(s)
- Yaser Ammar
- Internal Medicine Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Amira Mohamed
- Internal Medicine Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Gihane Khalil
- Chemical Pathology Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Dalia Maharem
- Internal Medicine Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
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