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Maiorov I, Bagrov K, Efraim R, Ankri Eliyahu G, Livneh A, Landesberg A. MMP-8 causes leftward shift in end-diastolic pressure-volume relationship and may explain the development of diastolic dysfunction in septic cardiomyopathy. Am J Physiol Heart Circ Physiol 2024; 327:H1098-H1111. [PMID: 39178029 DOI: 10.1152/ajpheart.00240.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 08/07/2024] [Accepted: 08/19/2024] [Indexed: 08/24/2024]
Abstract
Septic cardiomyopathy (SCM) with diastolic dysfunction carries a poor prognosis, and the mechanisms underlying the development of diastolic dysfunction remain unclear. Matrix metalloproteinase-8 (MMP-8) is released from neutrophils and degrades collagen I. MMP-8 levels correlate with SCM severity. We scrutinized, for the first time, the direct impact of MMP-8 on cardiac systolic and diastolic functions. Isolated rat hearts were perfused with Krebs-Henseleit solution in a Langendorff setup with computer-controlled filling pressures of both ventricles in an isovolumetric regime. The end-diastolic pressure (EDP) varied periodically between 3 and 20 mmHg. After baseline recordings, MMP-8 (100 µg/mL) was added to the perfusion. Short-axis views of both ventricles were continuously acquired by echocardiography. MMP-8 perfusion resulted in a progressive decline in peak systolic pressures (Psys) in both ventricles, but without significant changes in their end-systolic pressure-area relationships (ESPARs). Counterintuitively, conspicuous leftward shifts of the end-diastolic pressure-area relationships (EDPARs) were observed in both ventricles. The left ventricle (LV) end-diastolic area (EDA) decreased by 32.8 ± 5.7% (P = 0.008) at an EDP of 10.5 ± 0.4 mmHg, when LV Psys dropped by 20%. The decline of Psys was primarily due to the decrease in EDA, and restoring the baseline EDA by increasing EDP recovered 81.33 ± 5.87% of the pressure drop. Collagen I generates tensile (eccentric) stress, and its degradation by MMP-8 causes end-diastolic pressure-volume relationship (EDPVR) leftward shift, resulting in diastolic and systolic dysfunctions. The diastolic dysfunction explains the clinically observed fluid unresponsiveness, whereas the decrease in end-diastolic volume (EDV) diminishes the systolic functions. MMP-8 can explain the development of SCM with diastolic dysfunction.NEW & NOTEWORTHY MMP-8, released from activated neutrophils and macrophages, is markedly elevated in sepsis, correlating with sepsis severity and mortality. MMP-8 targets collagen I of the cardiac ECM and induces diastolic dysfunction with fluid unresponsiveness, associated with decreased EDV, reduced sarcomere length, and diminished systolic function. Unlike other MMPs that predominantly cleave collagen-III and contribute to cardiac dilatation, thereby increasing sarcomere length, MMP-8 leads to a leftward shift in the EDPVR, resulting in diastolic and systolic dysfunctions.
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Affiliation(s)
- Ida Maiorov
- Cardiovascular Research, Faculty of Biomedical Engineering, Technion-IIT, Haifa, Israel
| | - Konstantin Bagrov
- Cardiovascular Research, Faculty of Biomedical Engineering, Technion-IIT, Haifa, Israel
| | - Roy Efraim
- Cardiology Department, Rambam Health Care Campus, Haifa, Israel
| | - Galit Ankri Eliyahu
- Cardiovascular Research, Faculty of Biomedical Engineering, Technion-IIT, Haifa, Israel
| | - Amit Livneh
- Cardiovascular Research, Faculty of Biomedical Engineering, Technion-IIT, Haifa, Israel
| | - Amir Landesberg
- Cardiovascular Research, Faculty of Biomedical Engineering, Technion-IIT, Haifa, Israel
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Wang YT, Sansone A, Smirnov A, Stallings CL, Orvedahl A. Myeloid autophagy genes protect mice against fatal TNF- and LPS-induced cytokine storm syndromes. Autophagy 2023; 19:1114-1127. [PMID: 36056542 PMCID: PMC10012903 DOI: 10.1080/15548627.2022.2116675] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
ABBREVIATIONS ATG5: autophagy related 5; ATG7: autophagy related 7; ATG14: autophagy related 14; ATG16L1: autophagy related 16-like 1 (S. cerevisiae); BECN1: beclin 1, autophagy related; CASP1: caspase 1; CASP4/CASP11: caspase 4, apoptosis-related cysteine peptidase; CIM: conditionally immortalized macrophage; CLP: cecal ligation and puncture; CSS: cytokine storm syndrome; DC: dendritic cell; IFNG/IFNγ: interferon gamma; IFNGR1: interferon gamma receptor 1; ip: intraperitoneal; iv: intravenous; IL12/p70: interleukin 12, p70 heterodimer; IL18: Interleukin 18; ITGAX/CD11c: integrin alpha X; LAP: LC3-associated phagocytosis; LPS: lipopolysaccharide; LYZ2/LYSM: lysozyme 2; MAP1LC3A/LC3: microtubule-associated protein 1 light chain 3 alpha; RB1CC1/FIP200: RB1-inducible coiled-coil 1; S100A8/MRP8: S100 calcium binding protein A8 (calgranulin A); TICAM1/TRIF: TIR domain containing adaptor molecule 1; TLR4: toll-like receptor 4; TNF: tumor necrosis factor.
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Affiliation(s)
- Ya-Ting Wang
- Center for Infectious Disease Research, Department of Basic Medical Sciences, Tsinghua University School of Medicine, Beijing, Haidian, China
| | - Amy Sansone
- Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, MO, United States
| | - Asya Smirnov
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO, United States
| | - Christina L Stallings
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO, United States
| | - Anthony Orvedahl
- Department of Pediatrics, Washington University School of Medicine in St. Louis, St. Louis, MO, United States.,Department of Pathology and Immunology, Washington University School of Medicine in St. Louis, St. Louis, MO, United States
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3
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Wang J, Kang G, Yuan H, Cao X, Huang H, de Marco A. Research Progress and Applications of Multivalent, Multispecific and Modified Nanobodies for Disease Treatment. Front Immunol 2022; 12:838082. [PMID: 35116045 PMCID: PMC8804282 DOI: 10.3389/fimmu.2021.838082] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 12/30/2021] [Indexed: 12/22/2022] Open
Abstract
Recombinant antibodies such as nanobodies are progressively demonstrating to be a valid alternative to conventional monoclonal antibodies also for clinical applications. Furthermore, they do not solely represent a substitute for monoclonal antibodies but their unique features allow expanding the applications of biotherapeutics and changes the pattern of disease treatment. Nanobodies possess the double advantage of being small and simple to engineer. This combination has promoted extremely diversified approaches to design nanobody-based constructs suitable for particular applications. Both the format geometry possibilities and the functionalization strategies have been widely explored to provide macromolecules with better efficacy with respect to single nanobodies or their combination. Nanobody multimers and nanobody-derived reagents were developed to image and contrast several cancer diseases and have shown their effectiveness in animal models. Their capacity to block more independent signaling pathways simultaneously is considered a critical advantage to avoid tumor resistance, whereas the mass of these multimeric compounds still remains significantly smaller than that of an IgG, enabling deeper penetration in solid tumors. When applied to CAR-T cell therapy, nanobodies can effectively improve the specificity by targeting multiple epitopes and consequently reduce the side effects. This represents a great potential in treating malignant lymphomas, acute myeloid leukemia, acute lymphoblastic leukemia, multiple myeloma and solid tumors. Apart from cancer treatment, multispecific drugs and imaging reagents built with nanobody blocks have demonstrated their value also for detecting and tackling neurodegenerative, autoimmune, metabolic, and infectious diseases and as antidotes for toxins. In particular, multi-paratopic nanobody-based constructs have been developed recently as drugs for passive immunization against SARS-CoV-2 with the goal of impairing variant survival due to resistance to antibodies targeting single epitopes. Given the enormous research activity in the field, it can be expected that more and more multimeric nanobody molecules will undergo late clinical trials in the next future. Systematic Review Registration.
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Affiliation(s)
- Jiewen Wang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- Institute of Shaoxing, Tianjin University, Zhejiang, China
| | - Guangbo Kang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- Institute of Shaoxing, Tianjin University, Zhejiang, China
| | - Haibin Yuan
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- Institute of Shaoxing, Tianjin University, Zhejiang, China
| | - Xiaocang Cao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin Medical University, Tianjin, China
| | - He Huang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
- Frontiers Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin, China
- Institute of Shaoxing, Tianjin University, Zhejiang, China
| | - Ario de Marco
- Laboratory for Environmental and Life Sciences, University of Nova Gorica, Nova Gorica, Slovenia
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Wang L, Zhong Q, Feng Y, Tang X, Wang Q, Zou Y, Duan J. Long noncoding RNA TUG1 is downregulated in sepsis and may sponge miR-27a to downregulate tumor necrosis factor-α. J Int Med Res 2021; 48:300060520910638. [PMID: 32237949 PMCID: PMC7132817 DOI: 10.1177/0300060520910638] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objectives Bioinformatics analysis revealed a potential interaction between long noncoding (lnc)RNA TUG1 (taurine-upregulated gene 1) and microRNA (miR)-27a. miR-27a can promote sepsis by upregulating tumor necrosis factor-α (TNF-α). Our objective was to study the roles of TUG1 in sepsis. Methods Plasma levels of TUG1 in patients with sepsis and in healthy controls were measured by quantitative PCR assay. The IntaRNA program was used to predict potential interactions between TUG1 mRNA and miR-27a. The interaction between TUG1 and miR-27a was further explored by transfecting TUG1 expression vector or miR-27a mimic into AC16 human cardiomyocytes, and apoptosis was evaluated by cell apoptosis assay. Results TUG1 was downregulated in patients with sepsis. TUG1 was able to directly interact with miR-27a, but overexpression of TUG1 or miR-27a failed to affect the expression of each other. In contrast, TUG1 overexpression led to decreased levels of TNF-α, whereas miR-27a overexpression increased TNF-α in cardiomyocytes. Cell apoptosis analysis showed that TNF-α and miR-27a overexpression promoted apoptosis of cardiomyocytes induced by lipopolysaccharide. TUG1 overexpression had the opposite effect and attenuated the effects of TNF-α and miR-27a overexpression. Conclusion We conclude that TUG1 is downregulated in sepsis and may act as a molecular “sponge” of miR-27a to downregulate TNF-α.
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Affiliation(s)
- Li Wang
- Department of Emergency, First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province, P. R. China
| | - Qinghua Zhong
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province, P. R. China
| | - Yanli Feng
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province, P. R. China
| | - Xiaoying Tang
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province, P. R. China
| | - Qiong Wang
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province, P. R. China
| | - Yongyi Zou
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province, P. R. China
| | - Jiang Duan
- NICU, Department of Pediatrics, First Affiliated Hospital of Kunming Medical University, Kunming City, Yunnan Province, P. R. China
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Zhang C, Guo S, Wang J, Li A, Sun K, Qiu L, Li J, Wang S, Ma X, Lu Y. Anti-Inflammatory Activity and Mechanism of Hydrostatin-SN1 From Hydrophis cyanocinctus in Interleukin-10 Knockout Mice. Front Pharmacol 2020; 11:930. [PMID: 32636750 PMCID: PMC7318914 DOI: 10.3389/fphar.2020.00930] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 06/08/2020] [Indexed: 12/30/2022] Open
Abstract
Biopeptides derived from marine species have garnered significant research interest owing to their anti-inflammatory, antibacterial, and anticancer activities. In our previous study, Hydrostatin-SN1, a bioactive peptide extracted from the Hydrophis cyanocinctus venom gland T7 phage display library, demonstrated anti-inflammatory activity in a dextran sulfate sodium-induced murine colitis model. In this study, we investigated the anti-inflammatory activity and the underlying mechanism of Hydrostatin-SN1 in lipopolysaccharide (LPS)-induced bone marrow-derived macrophage (BMDM) cells and interleukin (IL)-10 knockout mice. The results showed that Hydrostatin-SN1 inhibited phosphorylation of JNK, ERK1/2, and p38 and decreased the mRNA expression of tumor necrosis factor-α (TNF-α), IL-6, and IL-1β in LPS-stimulated BMDM cells in a dose-dependent manner. In LPS-induced acute shock model, a significant higher survival rate of Hydrostatin-SN1-treated mice was observed. Furthermore, Hydrostatin-SN1 reduced body weight loss, decreased disease activity index, reduced spleen index, prevented histological injury, and inhibited the expression of IL-β and phosphorylation of JNK, ERK1/2, and p38 in the colon tissue of IL-10 knockout mice. Additionally, the positive expression rate of TNF-α in mice colon was decreased. Overall, our results suggest that Hydrostatin-SN1 has significant anti-inflammatory effects, both in vitro and in vivo.
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Affiliation(s)
- Chuan Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Shanshan Guo
- School of Medicine, Shanghai University, Shanghai, China
| | - Junjie Wang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - An Li
- Department of Biochemical Pharmacy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Kuo Sun
- Department of Biochemical Pharmacy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Lei Qiu
- Department of Biochemical Pharmacy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Jianzhong Li
- Department of Biochemical Pharmacy, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Sheng Wang
- Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xingyuan Ma
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - Yiming Lu
- School of Medicine, Shanghai University, Shanghai, China.,Department of Biochemical Pharmacy, School of Pharmacy, Second Military Medical University, Shanghai, China.,Department of Critical Care Medicine, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
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6
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Vandewalle J, Steeland S, Van Ryckeghem S, Eggermont M, Van Wonterghem E, Vandenbroucke RE, Libert C. A Study of Cecal Ligation and Puncture-Induced Sepsis in Tissue-Specific Tumor Necrosis Factor Receptor 1-Deficient Mice. Front Immunol 2019; 10:2574. [PMID: 31787972 PMCID: PMC6856143 DOI: 10.3389/fimmu.2019.02574] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/17/2019] [Indexed: 12/13/2022] Open
Abstract
Sepsis is a complex syndrome resulting from a dysregulated immune response to an infection. Due to the high prevalence, morbidity, and mortality, there is a lot of interest in understanding pathways that play a role in sepsis, with a focus on the immune system. Tumor necrosis factor (TNF) is a pleiotropic pro-inflammatory cytokine and a master regulator of the immune system but clinical trials with TNF blockers in sepsis have failed to demonstrate significant protection. Since TNF stimulates two different receptors, TNF receptor 1 (TNFR1) and TNFR2, pan-TNF inhibition might be suboptimal since both receptors have opposite functions in polymicrobial sepsis. Therefore, we hypothesized that TNF has a dual role in sepsis, namely a mediating and a protective role, and that protection might be obtained by TNFR1-specific inhibition. We here confirmed that TNFR1−/− mice are protected in the sterile endotoxemia model, whereas TNFR1 deficiency did not protect in the cecal ligation and puncture (CLP)-induced polymicrobial sepsis model. Since whole body TNFR1 blockage might be deleterious because of the antibacterial function of TNF/TNFR1 signaling, we focused on the potential devastating role of TNF/TNFR1 signaling in specific cell types. We were interested in the gut epithelium, the endothelium, and hepatocytes using conditional TNFR1−/− mice, as these cell types have been shown to play a role in sepsis. However, none of these conditional knockout mice showed improved survival in the CLP model. We conclude that cell-specific targeting of TNFR1 to these cell types has no therapeutic future in septic peritonitis.
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Affiliation(s)
- Jolien Vandewalle
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sophie Steeland
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Sara Van Ryckeghem
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Melanie Eggermont
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Elien Van Wonterghem
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Roosmarijn E Vandenbroucke
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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7
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The Rebirth of Matrix Metalloproteinase Inhibitors: Moving Beyond the Dogma. Cells 2019; 8:cells8090984. [PMID: 31461880 PMCID: PMC6769477 DOI: 10.3390/cells8090984] [Citation(s) in RCA: 173] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 08/22/2019] [Accepted: 08/26/2019] [Indexed: 12/12/2022] Open
Abstract
The pursuit of matrix metalloproteinase (MMP) inhibitors began in earnest over three decades ago. Initial clinical trials were disappointing, resulting in a negative view of MMPs as therapeutic targets. As a better understanding of MMP biology and inhibitor pharmacokinetic properties emerged, it became clear that initial MMP inhibitor clinical trials were held prematurely. Further complicating matters were problematic conclusions drawn from animal model studies. The most recent generation of MMP inhibitors have desirable selectivities and improved pharmacokinetics, resulting in improved toxicity profiles. Application of selective MMP inhibitors led to the conclusion that MMP-2, MMP-9, MMP-13, and MT1-MMP are not involved in musculoskeletal syndrome, a common side effect observed with broad spectrum MMP inhibitors. Specific activities within a single MMP can now be inhibited. Better definition of the roles of MMPs in immunological responses and inflammation will help inform clinic trials, and multiple studies indicate that modulating MMP activity can improve immunotherapy. There is a U.S. Food and Drug Administration (FDA)-approved MMP inhibitor for periodontal disease, and several MMP inhibitors are in clinic trials, targeting a variety of maladies including gastric cancer, diabetic foot ulcers, and multiple sclerosis. It is clearly time to move on from the dogma of viewing MMP inhibition as intractable.
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8
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Alehagen U, Alexander J, Aaseth J, Larsson A. Decrease in inflammatory biomarker concentration by intervention with selenium and coenzyme Q10: a subanalysis of osteopontin, osteoprotergerin, TNFr1, TNFr2 and TWEAK. JOURNAL OF INFLAMMATION-LONDON 2019; 16:5. [PMID: 30923464 PMCID: PMC6421641 DOI: 10.1186/s12950-019-0210-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/12/2019] [Indexed: 01/21/2023]
Abstract
Background Inflammation is central to the pathogenesis of many diseases. Supplementation with selenium and coenzyme Q10 has been shown to reduce cardiovascular mortality, and increase cardiac function in elderly persons with a low intake of selenium. There are indications that one of the mechanisms of this positive effect is a decrease in inflammation. Methods Osteopontin, osteoprotegerin, sTNF receptor 1, sTNF receptor 2 and the tumor necrosis factor-like weak inducer of apoptosis called TWEAK, were determined in plasma after 6 months and 42 months in 219 community-living elderly persons, of whom 119 received supplements of selenium (200 μg/day) and coenzyme Q10 (200 mg/day), and 101 received a placebo. Repeated measures of variance were used to evaluate the levels, and the results were validated through ANCOVA analyses with adjustments for important covariates. Results Significantly lower concentrations of four of the five biomarkers for inflammation were observed as a result of the intervention with the supplements. Only TWEAK did not show significant differences. Conclusion In this sub-analysis of the intervention with selenium and coenzyme Q10 or placebo in an elderly community-living population, biomarkers for inflammation were evaluated. A significantly lower concentration in four of the five biomarkers tested could be demonstrated as a result of the supplementation, indicating a robust effect on the inflammatory system. The decrease in inflammation could be one of the mechanisms behind the positive clinical results on reduced cardiovascular morbidity and mortality reported earlier as a result of the intervention. The study is small and should be regarded as hypothesis-generating, but nonetheless adds important data about mechanisms presently known to increase the risk of clinical effects such as reduced cardiovascular mortality, increased cardiac function and better health-related quality of life scoring, as previously demonstrated in the active treatment group . Trial registration The intervention study was registered at Clinicaltrials.gov, and has the identifier NCT01443780 and registered on 09/30/2011.
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Affiliation(s)
- Urban Alehagen
- 1Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | - Jan Alexander
- 2Norwegian Institute of Public Health, N-0403 Oslo, Norway
| | - Jan Aaseth
- 3Research Department, Innlandet Hospital Trust, Brumunddal, Norway.,4Inland Norway University of Applied Sciences, N-2411 Elverum, Norway
| | - Anders Larsson
- 5Department of Medical Sciences, Uppsala University, SE-751 85 Uppsala, Sweden
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Van Looveren K, Libert C. Should we target TNF receptors in the intestinal epithelium with glucocorticoids during systemic inflammation? Expert Opin Ther Targets 2018; 22:1029-1037. [DOI: 10.1080/14728222.2018.1539078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kelly Van Looveren
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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10
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He J, Zhang Q, Zhang W, Chen F, Zhao T, Lin Y, Li J, Liu Y, Liu Y, Shao Y. The interleukin-27 -964A>G polymorphism enhances sepsis-induced inflammatory responses and confers susceptibility to the development of sepsis. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2018; 22:248. [PMID: 30268141 PMCID: PMC6164187 DOI: 10.1186/s13054-018-2180-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 09/05/2018] [Indexed: 02/03/2023]
Abstract
Background Previous studies have identified critical roles of IL-27 in the pathological mechanisms of sepsis, and blockade of IL-27 may be a promising alternative therapy for sepsis. The purpose of this study was to evaluate the clinical relevance of IL-27 genetic polymorphisms in sepsis and to further characterize their effect on IL-27 expression and inflammatory processes following sepsis. Methods A total of 885 septic patients and 1101 healthy controls were enrolled and genotyped for IL-27 genetic variants (rs153109/−964A > G and rs17855750/2905 T > G). Quantitative real-time PCR and enzyme-linked immunosorbent assays were performed to detect IL-27 expression and cytokine production. The effect of the rs153109 polymorphism on IL-27 promoter activity was evaluated using a luciferase reporter assay, and THP-1 cell apoptosis was calculated using an annexin V apoptosis assay. Results No significant differences in the genotype/allele frequencies were observed between patients with sepsis and healthy controls, suggesting that these two IL-27 polymorphisms may not influence susceptibility to sepsis. The -964AA genotype was overrepresented in patients with severe sepsis/septic shock relative to patients with the sepsis subtype, and the A allele was significantly associated with 28-mortality in sepsis. Patients carrying the -964AA genotype exhibited significantly higher expression levels of IL-27 than the GA/GG genotype carriers. The results of an in vitro (lipopolysaccharide (LPS))-stimulated experiment showed that this sepsis-associated high-risk AA genotype significantly increased IL-27 levels and enhanced TNF-α and IL-1β production in the peripheral blood mononuclear cells (PBMCs) upon exposure to LPS in vitro. Furthermore, luciferase reporter assays indicated that the high-risk -964A allele resulted in increased promoter activities compared to the non-risk allele in THP-1 and 293 T cells. Additionally, IL-27 treatment significantly enhanced TNF-α and IL-6 secretion and apoptosis of THP-1 cells upon LPS stimulation. Conclusions These results provided evidence that the IL-27 -964A > G polymorphism functionally enhanced IL-27 expression and promoted sepsis-induced inflammatory responses, which ultimately resulted in promoting the progression of sepsis and poor prognosis. Electronic supplementary material The online version of this article (10.1186/s13054-018-2180-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Junbing He
- The Intensive Care Unit, Jieyang Affiliated Hospital, SunYat-sen University, Tianfu Road 107, Rongcheng District, Jieyang City, 522000, Guangdong Province, People's Republic of China
| | - Quanfu Zhang
- The Department of Gynecology and Obstetrics, Shenzhen Maternity and Child Healthcare Hospital Affiliated to Southern Medical University, Shenzhen, Guangdong, People's Republic of China
| | - Wenying Zhang
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Renmin Street South 57, Xiashan District, Zhanjiang City, 524001, Guangdong Province, People's Republic of China
| | - Feng Chen
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Renmin Street South 57, Xiashan District, Zhanjiang City, 524001, Guangdong Province, People's Republic of China
| | - Tian Zhao
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Renmin Street South 57, Xiashan District, Zhanjiang City, 524001, Guangdong Province, People's Republic of China
| | - Yao Lin
- The Intensive Care Unit, Jieyang Affiliated Hospital, SunYat-sen University, Tianfu Road 107, Rongcheng District, Jieyang City, 522000, Guangdong Province, People's Republic of China
| | - Jia Li
- The Intensive Care Unit, the Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Hubei, People's Republic of China
| | - Yansong Liu
- The Intensive Care Unit, the Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Yuchun Liu
- The Intensive Care Unit, Jieyang Affiliated Hospital, SunYat-sen University, Tianfu Road 107, Rongcheng District, Jieyang City, 522000, Guangdong Province, People's Republic of China.
| | - Yiming Shao
- The Intensive Care Unit, Affiliated Hospital of Guangdong Medical University, Renmin Street South 57, Xiashan District, Zhanjiang City, 524001, Guangdong Province, People's Republic of China.
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Timmermans S, Souffriau J, Vandewalle J, Van Wyngene L, Van Looveren K, Vanderhaeghen T, Libert C. Using the inbred mouse strain SPRET/EiJ to provide novel insights in inflammation and infection research. Mamm Genome 2018; 29:585-592. [PMID: 29947962 DOI: 10.1007/s00335-018-9751-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 06/05/2018] [Indexed: 12/25/2022]
Abstract
Inbred mouse strains derived from the species Mus spretus have been very informative in the study of certain gene polymorphisms in inflammation and infection. Based on our interest in sepsis, we used SPRET/EiJ mice and mapped several critical loci that are linked to sensitivity to cytokine-induced inflammation and endotoxemia. These studies were based on prominent phenotypes that have never been observed in strains derived from Mus musculus and we mapped them at a resolution that enables us to draw conclusions on the mechanisms. Now that the genome of SPRET/EiJ has been sequenced, and other tools have become available, it is time to revisit this strain and emphasize its advantages and disadvantages as a research tool and a discovery platform.
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Affiliation(s)
- Steven Timmermans
- VIB Center for Inflammation Research, Technologiepark 927, 9052, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Souffriau
- VIB Center for Inflammation Research, Technologiepark 927, 9052, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jolien Vandewalle
- VIB Center for Inflammation Research, Technologiepark 927, 9052, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Lise Van Wyngene
- VIB Center for Inflammation Research, Technologiepark 927, 9052, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kelly Van Looveren
- VIB Center for Inflammation Research, Technologiepark 927, 9052, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tineke Vanderhaeghen
- VIB Center for Inflammation Research, Technologiepark 927, 9052, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB Center for Inflammation Research, Technologiepark 927, 9052, Ghent, Belgium. .,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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A New Venue of TNF Targeting. Int J Mol Sci 2018; 19:ijms19051442. [PMID: 29751683 PMCID: PMC5983675 DOI: 10.3390/ijms19051442] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 04/25/2018] [Accepted: 05/03/2018] [Indexed: 12/20/2022] Open
Abstract
The first Food and Drug Administration-(FDA)-approved drugs were small, chemically-manufactured and highly active molecules with possible off-target effects, followed by protein-based medicines such as antibodies. Conventional antibodies bind a specific protein and are becoming increasingly important in the therapeutic landscape. A very prominent class of biologicals are the anti-tumor necrosis factor (TNF) drugs that are applied in several inflammatory diseases that are characterized by dysregulated TNF levels. Marketing of TNF inhibitors revolutionized the treatment of diseases such as Crohn’s disease. However, these inhibitors also have undesired effects, some of them directly associated with the inherent nature of this drug class, whereas others are linked with their mechanism of action, being pan-TNF inhibition. The effects of TNF can diverge at the level of TNF format or receptor, and we discuss the consequences of this in sepsis, autoimmunity and neurodegeneration. Recently, researchers tried to design drugs with reduced side effects. These include molecules with more specificity targeting one specific TNF format or receptor, or that neutralize TNF in specific cells. Alternatively, TNF-directed biologicals without the typical antibody structure are manufactured. Here, we review the complications related to the use of conventional TNF inhibitors, together with the anti-TNF alternatives and the benefits of selective approaches in different diseases.
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