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Xu J, Lin S, Chen H, Yang G, Zhou M, Liu Y, Li A, Yin S, Jiang X. Highly Active Frozen Nanovesicles Microneedles for Senile Wound Healing via Antibacteria, Immunotherapy, and Skin Regeneration. Adv Healthc Mater 2024; 13:e2304315. [PMID: 38261729 DOI: 10.1002/adhm.202304315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Indexed: 01/25/2024]
Abstract
Senile wound healing risks a variety of health complications and makes both economic and psychological burdens on patients greatly. Poor activity of aged dermal fibroblasts (A-FBs) and local disordered immunoreaction in the deep dermis contribute to delayed wound healing. Therefore, the locally complex microenvironment in deep requires additional processing. Herein, a novel double-layer hyaluronic acid methacrylate (HAMA)/polyvinyl alcohol (PVA) microneedle patch (MNP) coated by young fibroblast-derived exosomes (Y-EXOs) (Y-EXOs@HAMA/PVA MNP) is presented for deep drug delivery, aged wound healing and immunoregulation. A spraying and freeze-drying method is applied for keeping the bioactivity of the nanovesicles. An ideal loading of Y-EXOs and enhanced strength for penetration have realized after circulation for times. The Y-EXOs@HAMA/PVA MNP shows an excellent influence on delayed wound healing of aged skin with active A-FBs, more deposition of collagen and less production of IL-17A compared with application of aged fibroblast-derived exosomes (A-EXOs). Moreover, the content microRNAs in Y-EXOs and A-EXOs are sequenced for further study. This study initiatively demonstrates that Y-EXOs have effective function on both anti-aging and anti-inflammation and Y-EXOs@HAMA/PVA MNP is expected as a novel strategy for deep drug delivery for promoting hard wound healing in aged skin in future clinical application.
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Affiliation(s)
- Jingyi Xu
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Sihan Lin
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Hongyan Chen
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Guangzheng Yang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Mingliang Zhou
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Yili Liu
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Anshuo Li
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Shi Yin
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
| | - Xinquan Jiang
- Department of Prosthodontics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- College of Stomatology, Shanghai Jiao Tong University, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
- Shanghai Engineering Research Center of Advanced Dental Technology and Materials, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, No. 639 Zhizaoju Road, Shanghai, 200011, P. R. China
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2
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Wang Y, Wakelam MJO, Bankaitis VA, McDermott MI. The wide world of non-mammalian phospholipase D enzymes. Adv Biol Regul 2024; 91:101000. [PMID: 38081756 DOI: 10.1016/j.jbior.2023.101000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 11/15/2023] [Indexed: 02/25/2024]
Abstract
Phospholipase D (PLD) hydrolyses phosphatidylcholine (PtdCho) to produce free choline and the critically important lipid signaling molecule phosphatidic acid (PtdOH). Since the initial discovery of PLD activities in plants and bacteria, PLDs have been identified in a diverse range of organisms spanning the taxa. While widespread interest in these proteins grew following the discovery of mammalian isoforms, research into the PLDs of non-mammalian organisms has revealed a fascinating array of functions ranging from roles in microbial pathogenesis, to the stress responses of plants and the developmental patterning of flies. Furthermore, studies in non-mammalian model systems have aided our understanding of the entire PLD superfamily, with translational relevance to human biology and health. Increasingly, the promise for utilization of non-mammalian PLDs in biotechnology is also being recognized, with widespread potential applications ranging from roles in lipid synthesis, to their exploitation for agricultural and pharmaceutical applications.
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Affiliation(s)
- Y Wang
- Department of Cell Biology & Genetics, Texas A&M Health Science Center, College Station, TX, 77843, USA; Department of Microbiology, University of Washington, Seattle, WA98109, USA
| | - M J O Wakelam
- Babraham Institute, Babraham Research Campus, Cambridge, CB22 3AT, United Kingdom
| | - V A Bankaitis
- Department of Cell Biology & Genetics, Texas A&M Health Science Center, College Station, TX, 77843, USA; Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX, 77843, USA; Department of Chemistry, Texas A&M University, College Station, TX, 77843, USA
| | - M I McDermott
- Department of Cell Biology & Genetics, Texas A&M Health Science Center, College Station, TX, 77843, USA.
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3
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Pérez-Hernández N, Posadas-Sánchez R, Vargas-Alarcón G, Pérez-Méndez Ó, Luna-Luna M, Rodríguez-Pérez JM. DNA Methylation of the IL-17A Gene Promoter Is Associated with Subclinical Atherosclerosis and Coronary Artery Disease: The Genetics of Atherosclerotic Disease Mexican Study. Curr Issues Mol Biol 2023; 45:9768-9777. [PMID: 38132456 PMCID: PMC10742333 DOI: 10.3390/cimb45120610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023] Open
Abstract
The interleukin-17 (IL-17) has a crucial role during inflammation and has been associated with cardiovascular diseases, but its role in epigenetics is still poorly understood. Therefore, the aim of this study was to evaluate the DNA methylation status of the IL-17A gene promoter to establish whether it may represent a risk factor for subclinical atherosclerosis (SA) or clinical coronary artery disease (CAD). We included 38 patients with premature CAD (pCAD), 48 individuals with SA, and 43 healthy controls. Methylation in the CpG region of the IL-17A gene promoter was assessed via methylation-specific polymerase chain reaction (MSP). Individuals with SA showed increased methylation levels compared to healthy controls and pCAD patients, with p < 0.001 for both. Logistic regression analysis showed that high methylation levels represent a significant risk for SA (OR = 5.68, 95% CI = 2.38-14.03, p < 0.001). Moreover, low methylation levels of the IL-17A gene promoter DNA represent a risk for symptomatic pCAD when compared with SA patients (OR = 0.16, 95% CI = 0.06-0.41, p < 0.001). Our data suggest that the increased DNA methylation of the IL-17A gene promoter is a risk factor for SA but may be a protection factor for progression from SA to symptomatic CAD.
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Affiliation(s)
- Nonanzit Pérez-Hernández
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico; (N.P.-H.); (G.V.-A.); (Ó.P.-M.); (M.L.-L.)
| | - Rosalinda Posadas-Sánchez
- Department of Endocrinology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico;
| | - Gilberto Vargas-Alarcón
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico; (N.P.-H.); (G.V.-A.); (Ó.P.-M.); (M.L.-L.)
| | - Óscar Pérez-Méndez
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico; (N.P.-H.); (G.V.-A.); (Ó.P.-M.); (M.L.-L.)
| | - María Luna-Luna
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico; (N.P.-H.); (G.V.-A.); (Ó.P.-M.); (M.L.-L.)
| | - José Manuel Rodríguez-Pérez
- Department of Molecular Biology, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City 14080, Mexico; (N.P.-H.); (G.V.-A.); (Ó.P.-M.); (M.L.-L.)
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4
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Xia L, Wu T, Chen L, Mei P, Liu L, Li R, Shu M, Huan Z, Wu C, Fang B. Silicon-Based Biomaterials Modulate the Adaptive Immune Response of T Lymphocytes to Promote Osteogenesis/Angiogenesis via Epigenetic Regulation. Adv Healthc Mater 2023; 12:e2302054. [PMID: 37842937 DOI: 10.1002/adhm.202302054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/11/2023] [Indexed: 10/17/2023]
Abstract
Silicon (Si)-based biomaterials are widely applied for bone regeneration. However, the underlying mechanisms of the materials function remain largely unknown. T lymphocyte-mediated adaptive immune response plays a vital role in the process of bone regeneration. In the current study, mesoporous silica (MS) is used as a model material of Si-based biomaterials. It shows that the supernatant of CD4+ T lymphocytes pretreated with MS extract significantly promotes the vascularized bone regeneration. The potential mechanism is closely related to the fact that MS extract can reduce the expression of regulatory factor X-1 (RFX-1) in CD4+ T lymphocytes. This may result in the overexpression of interleukin-17A (IL-17A) by boosting histone H3 acetylation and lowering DNA methylation and H3K9 trimethylation. Importantly, the in vivo experiments further reveal that MS particles significantly enhance bone regeneration with improved angiogenesis in the critical-sized calvarial defect mouse model accompanied by upregulation of IL-17A in peripheral blood and the proportion of Th17 cells. This study suggests that modulation of the adaptive immune response of T lymphocytes by silicate-based biomaterials plays an important role for bone regeneration.
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Affiliation(s)
- Lunguo Xia
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Tingting Wu
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
- College & Hospital of Stomatology, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, 230032, China
| | - Lei Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Peng Mei
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Lu Liu
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Ruomei Li
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Mengmeng Shu
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
| | - Zhiguang Huan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bing Fang
- Department of Orthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, 200011, China
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5
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Gao Y, Zhang Q, Sun J, Liang Y, Zhang M, Zhao M, Zhang K, Dong C, Ma Q, Liu W, Li W, Chen Y, Han L, Jin F. Extracellular vesicles derived from PM2.5‐exposed alveolar epithelial cells mediate endothelial adhesion and atherosclerosis in ApoE
−/−
mice. FASEB J 2022; 36:e22161. [PMID: 35061300 DOI: 10.1096/fj.202100927rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 12/26/2021] [Accepted: 12/29/2021] [Indexed: 12/23/2022]
Affiliation(s)
- Yongheng Gao
- Department of Respiration Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Qian Zhang
- Department of Respiration Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Jinbo Sun
- Department of Urology General Hospital of the Central Theater Command Wuhan China
| | - Yuan Liang
- Department of Geriatrics 920th Hospital of Joint Logistics Support Force Kunming China
| | - Minlong Zhang
- Department of Respiration The 309th Hospital of the Chinese People's Liberation Army Beijing China
| | - Mingxuan Zhao
- Research Center of Clinical Pharmacology the First Affiliated Hospital of Yunnan University of Chinese Medicine Kunming China
| | - Kailiang Zhang
- Department of Orthopedics Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Chuan Dong
- Department of Orthopedics Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Qiong Ma
- Department of Orthopedics Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Wei Liu
- Department of Respiration Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Wangping Li
- Department of Respiration Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Yanwei Chen
- Department of Respiration Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Luyao Han
- Department of Respiration Tangdu Hospital Fourth Military Medical University Xi'an China
| | - Faguang Jin
- Department of Respiration Tangdu Hospital Fourth Military Medical University Xi'an China
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Cardiovascular Diseases and Pharmacomicrobiomics: A Perspective on Possible Treatment Relevance. Biomedicines 2021; 9:biomedicines9101338. [PMID: 34680455 PMCID: PMC8533057 DOI: 10.3390/biomedicines9101338] [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: 07/30/2021] [Revised: 09/20/2021] [Accepted: 09/23/2021] [Indexed: 12/21/2022] Open
Abstract
Cardiovascular diseases (CVDs), the most common cause of mortality in rich countries, include a wide variety of pathologies of the heart muscle and vascular system that compromise the proper functioning of the heart. Most of the risk factors for cardiovascular diseases are well-known: lipid disorders, high serum LDL cholesterol, hypertension, smoking, obesity, diabetes, male sex and physical inactivity. Currently, much evidence shows that: (i) the human microbiota plays a crucial role in maintaining the organism’s healthy status; and (ii) a link exists between microbiota and cardiovascular function that, if dysregulated, could potentially correlate with CVDs. This scenario led the scientific community to carefully analyze the role of the microbiota in response to drugs, considering this the right path to improve the effectiveness of disease treatment. In this review, we examine heart diseases and highlight how the microbiota actually plays a preponderant role in their development. Finally, we investigate pharmacomicrobiomics—a new interesting field—and the microbiota’s role in modulating the response to drugs, to improve their effectiveness by making their action targeted, focusing particular attention on cardiovascular diseases and on innovative potential treatments.
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7
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Coletta S, Battaggia G, Della Bella C, Furlani M, Hauke M, Faass L, D'Elios MM, Josenhans C, de Bernard M. ADP-heptose enables Helicobacter pylori to exploit macrophages as a survival niche by suppressing antigen-presenting HLA-II expression. FEBS Lett 2021; 595:2160-2168. [PMID: 34216493 DOI: 10.1002/1873-3468.14156] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 06/30/2021] [Accepted: 06/30/2021] [Indexed: 12/15/2022]
Abstract
The persistence of Helicobacter pylori in the human gastric mucosa implies that the immune response fails to clear the infection. We found that H. pylori compromises the antigen presentation ability of macrophages, because of the decline of the presenting molecules HLA-II. Here, we reveal that the main bacterial factor responsible for this effect is ADP-heptose, an intermediate metabolite in the biosynthetic pathway of lipopolysaccharide (LPS) that elicits a pro-inflammatory response in gastric epithelial cells. In macrophages, it upregulates the expression of miR146b which, in turn, would downmodulate CIITA, the master regulator for HLA-II genes. Hence, H. pylori, utilizing ADP-heptose, exploits a specific arm of macrophage response to establish its survival niche in the face of the immune defense elicited in the gastric mucosa.
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Affiliation(s)
- Sara Coletta
- Department of Biology, University of Padova, Italy
| | | | - Chiara Della Bella
- Department of Experimental and Clinical Medicine, University of Florence, Italy
| | | | - Martina Hauke
- Medical Microbiology and Hospital Epidemiology, Max von Pettenkofer Institute, LMU Munich, Germany
| | - Larissa Faass
- Medical Microbiology and Hospital Epidemiology, Max von Pettenkofer Institute, LMU Munich, Germany
| | - Mario M D'Elios
- Department of Experimental and Clinical Medicine, University of Florence, Italy
| | - Christine Josenhans
- Medical Microbiology and Hospital Epidemiology, Max von Pettenkofer Institute, LMU Munich, Germany
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8
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Elkoshi Z. The Binary Classification Of Chronic Diseases. J Inflamm Res 2019; 12:319-333. [PMID: 31908517 PMCID: PMC6927256 DOI: 10.2147/jir.s227279] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/07/2019] [Indexed: 12/19/2022] Open
Abstract
Acute diseases start with an insult and end when insult disappears. If the trauma induces an immune reaction (which happens in most cases), this reaction must be terminated with some type of resolution mechanism, when the cause of the trauma ceases. Chronicity develops if insult is permanent or if the resolution mechanism is defective. Another way to reach disease chronicity is a positive feedback loop, whereby the immune reaction activates an internal, insult-like reaction. A distinction between chronic states characterized by a persistent, low suppressive effect and those characterized by a persistent, high suppressive effect of regulatory T cells (Treg), is proposed. This two-class division represents two ways to reach chronicity: (a) by maintaining inflammatory reaction long after insult disappears ("low Treg"), or (b) by suppressing inflammatory reaction prior to the disappearance of insult ("high Treg"). This two-class division may explain the strong association between certain pathogens and cancer, on one hand, and between several other pathogens and autoimmunity, on the other hand. The weak association between autoimmune diseases and HIV infection and the relatively weak association between autoimmune diseases and cancer may be elucidated as well. In addition, the model rationalizes why immune-modulating drugs, which are effective in cancer, are also effective in "high Treg" viral infections, while corticosteroids, which are generally effective in autoimmune diseases, are also effective in other "low Treg" diseases (such as asthma, atopic dermatitis, and "low Treg" infections) but are not effective in solid malignancies and "high Treg" infections. Moreover, the model expounds why certain bacteria inhibit tumor growth and why these very bacteria induce autoimmune diseases.
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Affiliation(s)
- Zeev Elkoshi
- Taro Pharmaceutical Industries, Haifa Bay, Israel
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9
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Shiotsugu S, Okinaga T, Habu M, Yoshiga D, Yoshioka I, Nishihara T, Ariyoshi W. The Biological Effects of Interleukin-17A on Adhesion Molecules Expression and Foam Cell Formation in Atherosclerotic Lesions. J Interferon Cytokine Res 2019; 39:694-702. [DOI: 10.1089/jir.2019.0034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Shohei Shiotsugu
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
- Division of Oral Medicine, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | | | - Manabu Habu
- Division of Oral and Maxillofacial Surgery, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Daigo Yoshiga
- Division of Oral Medicine, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Izumi Yoshioka
- Division of Oral Medicine, Department of Science and Physical Functions, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Tatsuji Nishihara
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
| | - Wataru Ariyoshi
- Division of Infections and Molecular Biology, Department of Health Promotion, Kyushu Dental University, Kitakyushu, Fukuoka, Japan
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10
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Troilo A, Grassi A, Petrone L, Cianchi F, Benagiano M, Bella CD, Capitani N, Bitetti J, D'Elios S, Tapinassi S, Azzurri A, Alnwaisri H, Romagnoli J, Bizzaro N, Bergman M, Baldari CT, D'Elios MM. Intrinsic factor recognition promotes T helper 17/T helper 1 autoimmune gastric inflammation in patients with pernicious anemia. Oncotarget 2019; 10:2921-2929. [PMID: 31080562 PMCID: PMC6499598 DOI: 10.18632/oncotarget.26874] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/03/2019] [Indexed: 02/06/2023] Open
Abstract
The intrinsic factor is the major humoral autoantigen in pernicious anemia/autoimmune gastritis. Although many studies have examined the autoantibody response to intrinsic factor and H+,K+-ATPase, no information is available on possible pathogenic mechanisms mediated by intrinsic factor - specific gastric T cells. Aim of this study was to investigate intrinsic factor-specific T cells in the gastric mucosa of pernicious anemia patients and define their functional properties. For the first time we provide evidence that gastric mucosa of pernicious anemia patients harbour a high proportion (20%) of autoreactive activated CD4+ T-cell clones that specifically recognize intrinsic factor. Most of these clones (94%) showed a T helper 17 or T helper 1 profile. All intrinsic factor-specific clones produced tumor necrosis factor-α, interleukin-21 and provided substantial help for B-cell immunoglobulin production. Most mucosa-derived intrinsic factor-specific T-cell clones expressed cytotoxicity against target cells. Our results indicate that activation of intrinsic factor-specific T helper 17 and T helper 1 T cells in the gastric mucosa represent a key effector mechanism in pernicious anemia suggesting that the T helper 17/T helper 1 pathway may represent a novel target for the prevention and treatment of the disease.
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Affiliation(s)
- Arianna Troilo
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Alessia Grassi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Luisa Petrone
- Endocrinology Unit, Careggi Hospital, Florence, Italy
| | - Fabio Cianchi
- Department of Surgery, University of Florence, Florence, Italy
| | - Marisa Benagiano
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Chiara Della Bella
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Nagaja Capitani
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Jacopo Bitetti
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Sofia D'Elios
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Simona Tapinassi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | | | - Heba Alnwaisri
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | | | | | - Mathijs Bergman
- Amsterdam Institute for Molecules, Medicines and Systems, Vrije University, Amsterdam, The Netherlands
| | | | - Mario Milco D'Elios
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
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11
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Benagiano M, Bianchi P, D'Elios MM, Brosens I, Benagiano G. Autoimmune diseases: Role of steroid hormones. Best Pract Res Clin Obstet Gynaecol 2019; 60:24-34. [PMID: 31047850 DOI: 10.1016/j.bpobgyn.2019.03.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 03/01/2019] [Indexed: 02/06/2023]
Abstract
Autoimmune diseases (AIDs) are a heterogeneous group of disorders in terms of clinical manifestations, pathogenesis, and prevalence, and there is no agreement to date on a common classification. Adaptive immune responses are responsible for the existence of AIDs, although innate immunity is also involved in misguiding the immune response against self-antigens. Hormones, in general, and in particular steroid hormones, play a critical role in the physiology and pathology of the immune system, especially in adaptive immunity. Hormonal factors, alone or in relation to age, sex, and reproductive status, are involved in conditioning the onset of a number of AIDs. There is a well-defined sexual dimorphism for human AIDs. At the same time, the classic view has been that steroid hormones have well-defined effects, with one type, estrogens, being "pro-inflammatory" and the other two progestogens (progesterone and its synthetic analogs) and androgens being "anti-inflammatory." Although this view has been considered too simplistic and seems contradicted by numerous observations, it remains valid: progestogens and androgens are immunosuppressive and therefore protective against AIDs, whereas estrogens are immune-stimulatory and therefore pathogenic in AIDs.
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Affiliation(s)
- Marisa Benagiano
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Paola Bianchi
- Department of Medico-Surgical Sciences and Translational Medicine, Sant'Andrea Hospital, Sapienza, University of Rome, Rome, Italy.
| | - Mario Milco D'Elios
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Ivo Brosens
- Faculty of Medicine, Catholic University of Leuven, Leuven, Belgium
| | - Giuseppe Benagiano
- Department of Obstetrics, Gynaecology and Urology, Policlinico Umberto I, Sapienza, University of Rome, Rome, Italy
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12
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Benagiano M, Borghi MO, Romagnoli J, Mahler M, Bella CD, Grassi A, Capitani N, Emmi G, Troilo A, Silvestri E, Emmi L, Alnwaisri H, Bitetti J, Tapinassi S, Prisco D, Baldari CT, Meroni PL, D'Elios MM. Interleukin-17/Interleukin-21 and Interferon-γ producing T cells specific for β2 Glycoprotein I in atherosclerosis inflammation of systemic lupus erythematosus patients with antiphospholipid syndrome. Haematologica 2019; 104:2519-2527. [PMID: 30872365 PMCID: PMC6959190 DOI: 10.3324/haematol.2018.209536] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 03/06/2019] [Indexed: 12/24/2022] Open
Abstract
Systemic lupus erythematosus is frequently associated with antiphospholipid
syndrome. Patients with lupus-antiphospholipid syndrome are characterized by
recurrent arterial/venous thrombosis, miscarriages, and persistent presence of
autoantibodies against phospholipid-binding proteins, such as
β2-Glycoprotein I. We investigated the cytokine production induced by
β2-Glycoprotein I in activated T cells that infiltrate in
vivo atherosclerotic lesions of lupus-antiphospholipid syndrome
patients. We examined the helper function of β2-Glycoprotein I-specific
T cells for tissue factor production, as well as their cytolytic potential and
their helper function for antibody production. Lupus-antiphospholipid syndrome
patients harbor in vivo activated CD4+ T cells that
recognize β2-Glycoprotein I in atherosclerotic lesions.
β2-Glycoprotein I induces T-cell proliferation and expression of both
Interleukin-17/Interleukin-21 and Interferon-γ in plaque-derived T-cell
clones. β2-Glycoprotein I-specific T cells display strong help for
monocyte tissue factor production, and promote antibody production in autologous
B cells. Moreover, plaque-derived β2-Glycoprotein I-specific
CD4+ T lymphocytes express both perforin-mediated and
Fas/FasLigand-mediated-cytotoxicity. Altogether, our results indicate that
β2-Glycoprotein I is able to elicit a local
Interleukin-17/Interleukin-21 and Interferon-γ inflammation in
lupus-antiphospholipid syndrome patients that might lead, if unabated, to plaque
instability and subsequent arterial thrombosis, suggesting that the T helper
17/T helper 1 pathway may represent a novel target for the prevention and
treatment of the disease.
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Affiliation(s)
- Marisa Benagiano
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Maria Orietta Borghi
- IRCCS, Istituto Auxologico Italiano, Laboratory of Immunorheumatology, Cusano Milanino, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | | | | | - Chiara Della Bella
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Alessia Grassi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Nagaja Capitani
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Giacomo Emmi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Internal Interdisciplinary Medicine, Lupus Clinic, AOU Careggi, Florence, Italy
| | - Arianna Troilo
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Elena Silvestri
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Lorenzo Emmi
- Internal Interdisciplinary Medicine, Lupus Clinic, AOU Careggi, Florence, Italy
| | - Heba Alnwaisri
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Jacopo Bitetti
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Simona Tapinassi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Domenico Prisco
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Internal Interdisciplinary Medicine, Lupus Clinic, AOU Careggi, Florence, Italy
| | | | - Pier Luigi Meroni
- IRCCS, Istituto Auxologico Italiano, Laboratory of Immunorheumatology, Cusano Milanino, Italy
| | - Mario Milco D'Elios
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy .,Internal Interdisciplinary Medicine, Lupus Clinic, AOU Careggi, Florence, Italy
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13
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Lai CH, Huang JC, Cheng HH, Wu MC, Huang MZ, Hsu HY, Chen YA, Hsu CY, Pan YJ, Chu YT, Chen TJ, Wu YF, Sit WY, Liu JS, Chiu YF, Wang HJ, Wang WC. Helicobacter pylori cholesterol glucosylation modulates autophagy for increasing intracellular survival in macrophages. Cell Microbiol 2018; 20:e12947. [PMID: 30151951 DOI: 10.1111/cmi.12947] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/11/2018] [Accepted: 08/13/2018] [Indexed: 12/17/2022]
Abstract
Cholesterol-α-glucosyltransferase (CGT) encoded by the type 1 capsular polysaccharide biosynthesis protein J (capJ) gene of Helicobacter pylori converts cellular cholesterol into cholesteryl glucosides. H. pylori infection induces autophagy that may increase bacterial survival in epithelial cells. However, the role of H. pylori CGT that exploits lipid rafts in interfering with autophagy for bacterial survival in macrophages has not been investigated. Here, we show that wild-type H. pylori carrying CGT modulates cholesterol to trigger autophagy and restrain autophagosome fusion with lysosomes, permitting a significantly higher bacterial burden in macrophages than that in a capJ-knockout (∆CapJ) mutant. Knockdown of autophagy-related protein 12 impairs autophagosome maturation and decreases the survival of internalised H. pylori in macrophages. These results demonstrate that CGT plays a crucial role in the manipulation of the autophagy process to impair macrophage clearance of H. pylori.
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Affiliation(s)
- Chih-Ho Lai
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Pediatrics, Chang Gung Memorial Hospital, Linkuo, Taiwan.,Graduate Institute of Biomedical Sciences, School of Medicine, Department of Laboratory Medicine, China Medical University and Hospital, Taichung, Taiwan.,Department of Nursing, Asia University, Taichung, Taiwan
| | - Ju-Chun Huang
- Graduate Institute of Biomedical Sciences, School of Medicine, Department of Laboratory Medicine, China Medical University and Hospital, Taichung, Taiwan
| | - Hsin-Hung Cheng
- Biomedical Science and Engineering Center, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Molecular and Cellular Biology, Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Meng-Chen Wu
- Biomedical Science and Engineering Center, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Molecular and Cellular Biology, Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Mei-Zi Huang
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Hui-Ying Hsu
- Graduate Institute of Biomedical Sciences, School of Medicine, Department of Laboratory Medicine, China Medical University and Hospital, Taichung, Taiwan
| | - Yu-An Chen
- Graduate Institute of Biomedical Sciences, School of Medicine, Department of Laboratory Medicine, China Medical University and Hospital, Taichung, Taiwan
| | - Chung-Yao Hsu
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Jiun Pan
- Graduate Institute of Biomedical Sciences, School of Medicine, Department of Laboratory Medicine, China Medical University and Hospital, Taichung, Taiwan
| | - Yen-Ting Chu
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Tsan-Jan Chen
- Biomedical Science and Engineering Center, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Molecular and Cellular Biology, Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Yu-Fang Wu
- Biomedical Science and Engineering Center, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Molecular and Cellular Biology, Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Wei Yang Sit
- Biomedical Science and Engineering Center, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Molecular and Cellular Biology, Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Jai-Shin Liu
- Biomedical Science and Engineering Center, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Molecular and Cellular Biology, Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Ya-Fang Chiu
- Department of Microbiology and Immunology, Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Pediatrics, Chang Gung Memorial Hospital, Linkuo, Taiwan
| | - Hung-Jung Wang
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Zhunan, Taiwan
| | - Wen-Ching Wang
- Biomedical Science and Engineering Center, National Tsing Hua University, Hsinchu, Taiwan.,Institute of Molecular and Cellular Biology, Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan
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14
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Barth RF, Maximilian Buja L, Cao L, Brodsky SV. An Obesity Paradox: Increased Body Mass Index Is Associated with Decreased Aortic Atherosclerosis. Curr Hypertens Rep 2018; 19:55. [PMID: 28593612 DOI: 10.1007/s11906-017-0753-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Brodsky et al. (Cardiovasc Pathol 25(6), 515-520, 2016) recently have reported that there was an unexpected and highly significant inverse correlation between body mass index (BMI) and atherosclerosis of the aortas of morbidly obese decedents (BMI >40 kg/m2). In a series of 304 decedents, 65 of whom were morbidly obese, minimal or no atherosclerosis was seen in 46 of them (70%) versus 20 (30%) who had severe atherosclerosis (P = 0.008). This obesity paradox was unexpected and raises important questions about the etiology and pathogenesis of atherosclerosis, which will be the subject of this commentary. The concept of healthy versus unhealthy adiposity may in part provide an explanation for the "obesity paradox." Another factor that will be considered is the possible role of adipokines and their genetic determinants that may significantly reduce the risk of developing aortic atherosclerosis in morbidly obese individuals. Considering the marked variability in the pattern and extent of atherosclerosis of the aorta, hemodynamic factors and endothelial cell shear stress may be the most important determinants that might explain the obesity paradox that we have observed. Finally, the possible role of gut microbiota and inflammation as factors in the etiopathogenesis of atherosclerosis will be considered, but their importance is less clear than that of hemodynamic factors. We conclude with the remarkable finding that a 5300-year-old, well-preserved mummy of the "Iceman," Ötzi had atherosclerotic disease of a number of major arteries and the interesting questions that this raises.
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Affiliation(s)
- Rolf F Barth
- Department of Pathology, The Ohio State University, 4132 Graves Hall, 333 W. 10th Ave, Columbus, OH, 43210, USA.
| | - L Maximilian Buja
- McGovern Medical School, Department of Pathology and Laboratory Medicine, University of Texas, 6431 Fannin St. MSB2.276, Houston, TX, 77030, USA
| | - Lei Cao
- Department of Cancer Biology and Genetics, The Ohio State University, 910 Biological Research Tower, 460 W. 12th Ave, Columbus, OH, 43210, USA
| | - Sergey V Brodsky
- Department of Pathology, The Ohio State University, B078 Graves Hall, 333 W. 10th Ave, Columbus, OH, 43210, USA
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15
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Brosens I, Benagiano M, Puttemans P, D'Elios MM, Benagiano G. The placental bed vascular pathology revisited: a risk indicator for cardiovascular disease. J Matern Fetal Neonatal Med 2017; 32:1556-1564. [PMID: 29172831 DOI: 10.1080/14767058.2017.1409718] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AIM The present paper intends in the first place to clarify the confusing terminology for describing the vascular pathology of the placental bed in relation to long-term risk of cardiovascular disease. METHODS Systematic review of relevant topics. RESULTS The maternal blood supply to the placenta is achieved by some 100 utero-placental spiral arteries with an outside diameter varying between 200 and 600 microns. Defective physiological changes of the myometrial segment of utero-placental spiral arteries and, particularly in preeclampsia associated to hypertensive disease, the presence of atherosclerosis in their proximal segment are a cause of obstructive vascular pathology. On the other hand, basal arteries which supply the inner myometrium and basal decidua are not affected by physiological change and maintain their musculoelastic structure. They can be identified by their external diameter of less than 120 microns. Acute atherosis is an aspecific vascular lesion that occurs in basal as well as spiral arteries inside, as well as outside, the placental bed in association with a variety of obstetrical conditions. CONCLUSIONS An increased risk of future cardiovascular disease, should be linked to atherosis or, at a later stage, atherosclerosis of utero-placental spiral arteries, rather than to that of decidual basal arteries.
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Affiliation(s)
- Ivo Brosens
- a Leuven Institute for Fertility and Embryology , Leuven , Belgium
| | - Marisa Benagiano
- b Department of Experimental and Clinical Medicine , University of Florence , Florence , Italy
| | | | - Mario M D'Elios
- b Department of Experimental and Clinical Medicine , University of Florence , Florence , Italy
| | - Giuseppe Benagiano
- c Department of Gynecology, Obstetrics and Urology , Sapienza, University of Rome , Rome , Italy
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16
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Pagliari M, Munari F, Toffoletto M, Lonardi S, Chemello F, Codolo G, Millino C, Della Bella C, Pacchioni B, Vermi W, Fassan M, de Bernard M, Cagnin S. Helicobacter pylori Affects the Antigen Presentation Activity of Macrophages Modulating the Expression of the Immune Receptor CD300E through miR-4270. Front Immunol 2017; 8:1288. [PMID: 29085364 PMCID: PMC5649134 DOI: 10.3389/fimmu.2017.01288] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/25/2017] [Indexed: 12/12/2022] Open
Abstract
Helicobacter pylori (Hp) is a Gram-negative bacterium that infects the human gastric mucosa, leading to chronic inflammation. If not eradicated with antibiotic treatment, the bacterium persists in the human stomach for decades increasing the risk to develop chronic gastritis, gastroduodenal ulcer, and gastric adenocarcinoma. The lifelong persistence of Hp in the human stomach suggests that the host response fails to clear the infection. It has been recently shown that during Hp infection phagocytic cells promote high Hp loads rather than contributing to bacterial clearance. Within these cells Hp survives in "megasomes," large structures arising from homotypic fusion of phagosomes, but the mechanism that Hp employs to avoid phagocytic killing is not completely understood. Here, we show that Hp infection induces the downregulation of specific microRNAs involved in the regulation of transcripts codifying for inflammatory proteins. miR-4270 targets the most upregulated gene: the immune receptor CD300E, whose expression is strictly dependent on Hp infection. CD300E engagement enhances the pro-inflammatory potential of macrophages, but in parallel it affects their ability to express and expose MHC class II molecules on the plasma membrane, without altering phagocytosis. This effect compromises the possibility for effector T cells to recognize and activate the killing potential of macrophages, which, in turn would become a survival niche for the bacterium. Taken together, our data add another piece to the complicate puzzle represented by the long-life coexistence between Hp and the human host and contribute with new insights toward understanding the regulation and function of the immune receptor CD300E.
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Affiliation(s)
| | - Fabio Munari
- Department of Biomedical Sciences, University of Padua, Venetian Institute of Molecular Medicine (VIMM), Padua, Italy
| | | | - Silvia Lonardi
- Department of Molecular and Translational Medicine, Section of Pathology, University of Brescia, Brescia, Italy
| | - Francesco Chemello
- Department of Biology, University of Padua, Padua, Italy.,CRIBI Biotechnology Center, University of Padua, Padua, Italy
| | - Gaia Codolo
- Department of Biology, University of Padua, Padua, Italy
| | - Caterina Millino
- Department of Biology, University of Padua, Padua, Italy.,CRIBI Biotechnology Center, University of Padua, Padua, Italy
| | | | - Beniamina Pacchioni
- Department of Biology, University of Padua, Padua, Italy.,CRIBI Biotechnology Center, University of Padua, Padua, Italy
| | - William Vermi
- Department of Molecular and Translational Medicine, Section of Pathology, University of Brescia, Brescia, Italy
| | - Matteo Fassan
- Department of Medicine, University of Padua, Padua, Italy
| | | | - Stefano Cagnin
- Department of Biology, University of Padua, Padua, Italy.,CRIBI Biotechnology Center, University of Padua, Padua, Italy
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17
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Della Bella C, Benagiano M, De Gennaro M, Gomez-Morales MA, Ludovisi A, D'Elios S, Luchi S, Pozio E, D'Elios MM, Bruschi F. T-cell clones in human trichinellosis: Evidence for a mixed Th1/Th2 response. Parasite Immunol 2017; 39. [PMID: 28106258 DOI: 10.1111/pim.12412] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 01/15/2017] [Indexed: 01/19/2023]
Abstract
In humans, studies on the cellular immune response against Trichinella are scarce. Aim of this study was to characterize the cytokine profile of T cells specific for Trichinella britovi in trichinellosis patients. Peripheral blood mononuclear cells (PBMC) were obtained from five patients involved in a trichinellosis outbreak caused by T. britovi, which occurred in 2013 in Tuscany (Italy). All the patients resulted positive for Trichinella-specific IgG, IgE and presented eosinophilia. T cells were investigated for their proliferation to excretory/secretory antigens from Trichinella spiralis muscle larvae (TsES) and for their cytokine profile. A total of 284 CD4+ and 42 CD8+ T-cell clones were obtained from the TsES-specific T-cell lines from PBMC. All T-cell clones proliferated in response to mitogen. Of the 284 CD4+ T-cell clones generated from TsES-specific T-cell lines, 135 (47%) proliferated significantly to TsES; 26% CD8+ T-cell clones showed proliferation to TsES. In the series of the 135 TsES-specific CD4+ clones, 51% expressed a Th2 profile, 30% a Th0 and 19% Th1. In the series of the 11 TsES-specific CD8+ T-cell clones, 18% were Tc2, 45% Tc0 and 36% Tc1. In human trichinellosis, the cellular immune response is, during the chronic phase, mixed Th1/Th2.
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Affiliation(s)
- C Della Bella
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | - M Benagiano
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | | | - M A Gomez-Morales
- Department of Infectious, Parasitic and Immune Mediated Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - A Ludovisi
- Department of Infectious, Parasitic and Immune Mediated Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - S D'Elios
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | - S Luchi
- Ospedale di Lucca, Lucca, Italy
| | - E Pozio
- Department of Infectious, Parasitic and Immune Mediated Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - M M D'Elios
- Department of Experimental and Clinical Medicine, Università degli Studi di Firenze, Florence, Italy
| | - F Bruschi
- Department of Translational Research, N.T.M.S., Università di Pisa, Pisa, Italy.,National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
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18
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Conti P, Lessiani G, Kritas SK, Ronconi G, Caraffa A, Theoharides TC. Mast cells emerge as mediators of atherosclerosis: Special emphasis on IL-37 inhibition. Tissue Cell 2017; 49:393-400. [PMID: 28420489 DOI: 10.1016/j.tice.2017.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/10/2017] [Accepted: 04/10/2017] [Indexed: 02/06/2023]
Abstract
In atherosclerosis lipoproteins stimulate the innate immune response, leading to the release of inflammatory cytokines and chemokines. Hypercholesterolemia may activate the synthesis and release of inflammatory cytokines such as IL-1, which induces TNF release in mast cells (MCs). IL-1 and IL-1 family members orchestrate a broadening list of inflammatory diseases, including atherosclerosis. MCs are implicated in the pathophysiology of several diseases including allergy and inflammation. Activated MCs, located perivascularly, contribute to inflammation in atherosclerosis by producing inflammatory cytokines. MC IL-1-activation leads to the immediate release of inflammatory chemical mediators and TNF, and late inflammatory compounds such as cytokines. MCs can be activated by exogenous cytokines, antigens, microbial products (LPS) and neurotransmitters and generate IL-1 beta, TNF and several other inflammatory cytokines/chemokines along with PGD2, leukotrienes, histamine and proteases. MCs activated with IL-1 induce selective release of IL-6 without degranulation. TNF emerges as one of the most potent inflammatory cytokines involved in the response due to LDL. Cytokines, such as IL-1, IL-6, IL-33 and TNF, are generated in the inflammatory sites by both macrophages and MCs, mediating atherosclerosis. IL-37 (IL-1 family member 7) binds IL-18Ra chain and acts by an intracellular mechanism down-regulating the expression of pro-inflammatory signals cJun, MAP kinase p38a, STAT transcription factors and p53. Blocking IL-1 with IL-37 alleviates the symptoms in patients with inflammatory diseases including arteriosclerosis. The impact of IL-37 on inflammatory cytokines mediating atherosclerosis is beneficial and protective. However, more studies are needed to better define this mechanism and the safety and tolerability of IL-37.
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Affiliation(s)
- Pio Conti
- Immunology Division, Postgraduate Medical School, University of Chieti-Pescara, Viale Unità dell'Italia 73, 66013, Chieti, Italy.
| | - Gianfranco Lessiani
- Angiology Unit, Medicine and Geriatria, Villa Serena Hospital, Città Sant'Angelo, Italy
| | | | - Gianpaolo Ronconi
- Clinica dei Pazienti del Territorio, Policlinico Gemelli, Roma, Italy
| | | | - Theoharis C Theoharides
- Molecular Immunopharmacology and Drug Discovery Laboratory, Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA, USA
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19
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Rojas JM, Arán-Sekul T, Cortés E, Jaldín R, Ordenes K, Orrego PR, González J, Araya JE, Catalán A. Phospholipase D from Loxosceles laeta Spider Venom Induces IL-6, IL-8, CXCL1/GRO-α, and CCL2/MCP-1 Production in Human Skin Fibroblasts and Stimulates Monocytes Migration. Toxins (Basel) 2017; 9:toxins9040125. [PMID: 28379166 PMCID: PMC5408199 DOI: 10.3390/toxins9040125] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 03/16/2017] [Accepted: 03/28/2017] [Indexed: 11/24/2022] Open
Abstract
Cutaneous loxoscelism envenomation by Loxosceles spiders is characterized by the development of a dermonecrotic lesion, strong inflammatory response, the production of pro-inflammatory mediators, and leukocyte migration to the bite site. The role of phospholipase D (PLD) from Loxosceles in the recruitment and migration of monocytes to the envenomation site has not yet been described. This study reports on the expression and production profiles of cytokines and chemokines in human skin fibroblasts treated with catalytically active and inactive recombinant PLDs from Loxosceles laeta (rLlPLD) and lipid inflammatory mediators ceramide 1-phosphate (C1P) and lysophosphatidic acid (LPA), and the evaluation of their roles in monocyte migration. Recombinant rLlPLD1 (active) and rLlPLD2 (inactive) isoforms induce interleukin (IL)-6, IL-8, CXCL1/GRO-α, and CCL2/monocyte chemoattractant protein-1 (MCP-1) expression and secretion in fibroblasts. Meanwhile, C1P and LPA only exhibited a minor effect on the expression and secretion of these cytokines and chemokines. Moreover, neutralization of both enzymes with anti-rLlPLD1 antibodies completely inhibited the secretion of these cytokines and chemokines. Importantly, conditioned media from fibroblasts, treated with rLlPLDs, stimulated the transmigration of THP-1 monocytes. Our data demonstrate the direct role of PLDs in chemotactic mediator synthesis for monocytes in human skin fibroblasts and indicate that inflammatory processes play an important role during loxoscelism.
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Affiliation(s)
- José M Rojas
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Tomás Arán-Sekul
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Emmanuel Cortés
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Romina Jaldín
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Kely Ordenes
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Patricio R Orrego
- Departamento Biomédico, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Jorge González
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Jorge E Araya
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
| | - Alejandro Catalán
- Laboratorio de Parasitología Molecular, Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Antofagasta, Antofagasta, CP 1270300, Chile.
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20
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Benagiano M, Gerosa M, Romagnoli J, Mahler M, Borghi MO, Grassi A, Della Bella C, Emmi G, Amedei A, Silvestri E, Emmi L, Prisco D, Meroni PL, D'Elios MM. β2 Glycoprotein I Recognition Drives Th1 Inflammation in Atherosclerotic Plaques of Patients with Primary Antiphospholipid Syndrome. THE JOURNAL OF IMMUNOLOGY 2017; 198:2640-2648. [PMID: 28193831 DOI: 10.4049/jimmunol.1600305] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 01/24/2017] [Indexed: 01/08/2023]
Abstract
Antiphospholipid syndrome (APS) is characterized by recurrent arterial/venous thrombosis and miscarriages in the persistent presence of autoantibodies against phospholipid-binding proteins (aPLs), such as β2 glycoprotein I (β2GPI). In addition to the aPL thrombophilic effect, arterial thrombosis was related to accelerated atherosclerosis in animal models; however, contrasting findings were reported in primary APS patients with regard to the increased number of plaques or abnormal arterial wall thickness. We investigated the cytokine production induced by β2GPI in activated T cells that infiltrate in vivo atherosclerotic lesions of primary APS patients with atherothrombosis. We also examined the helper function of β2GPI-specific T cells for monocyte matrix metalloproteinase-9 and tissue factor production, as well as their cytolytic potential and their helper function for Ab production. APS patients with atherothrombosis harbor in vivo-activated CD4+ T cells that recognize β2GPI in atherothrombotic lesions. β2GPI induces T cell proliferation and IFN-γ expression in plaque-derived T cell clones. β2GPI-specific T cells display helper function for monocyte matrix metalloproteinase-9 and tissue factor production and promote Ig production in autologous B cells. Moreover, plaque-derived β2GPI-specific CD4+ T lymphocytes express perforin-mediated and Fas/Fas ligand-mediated cytotoxicity. β2GPI, and especially the DI domain, drive a local Th1 inflammatory response, with subsequent plaque instability that eventually favors atherothrombosis. This finding may explain the association between aPLs and arterial thrombosis, despite the lack of evidence of surrogate markers for atherosclerosis in primary APS.
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Affiliation(s)
- Marisa Benagiano
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Maria Gerosa
- Department of Clinical Sciences and Community Health, Lupus Clinic, Institute Gaetano Pini, University of Milan, 20122 Milan, Italy
| | - Jacopo Romagnoli
- Department of Surgery, Catholic University of Rome, 00136 Rome, Italy
| | | | - Maria O Borghi
- Department of Clinical Sciences and Community Health, Lupus Clinic, Institute Gaetano Pini, University of Milan, 20122 Milan, Italy.,Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, 20095 Cusano Milanino, Italy; and
| | - Alessia Grassi
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Chiara Della Bella
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Giacomo Emmi
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy.,Internal Interdisciplinary Medicine, Lupus Clinic, Florence Careggi Hospital, 50134 Florence, Italy
| | - Elena Silvestri
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy
| | - Lorenzo Emmi
- Internal Interdisciplinary Medicine, Lupus Clinic, Florence Careggi Hospital, 50134 Florence, Italy
| | - Domenico Prisco
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy.,Internal Interdisciplinary Medicine, Lupus Clinic, Florence Careggi Hospital, 50134 Florence, Italy
| | - Pier Luigi Meroni
- Department of Clinical Sciences and Community Health, Lupus Clinic, Institute Gaetano Pini, University of Milan, 20122 Milan, Italy; .,Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, 20095 Cusano Milanino, Italy; and
| | - Mario M D'Elios
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; .,Internal Interdisciplinary Medicine, Lupus Clinic, Florence Careggi Hospital, 50134 Florence, Italy
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21
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D'Elios MM, Vallese F, Capitani N, Benagiano M, Bernardini ML, Rossi M, Rossi GP, Ferrari M, Baldari CT, Zanotti G, de Bernard M, Codolo G. The Helicobacter cinaedi antigen CAIP participates in atherosclerotic inflammation by promoting the differentiation of macrophages in foam cells. Sci Rep 2017; 7:40515. [PMID: 28074932 PMCID: PMC5225449 DOI: 10.1038/srep40515] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 12/06/2016] [Indexed: 01/09/2023] Open
Abstract
Recent studies have shown that certain specific microbial infections participate in atherosclerosis by inducing inflammation and immune reactions, but how the pathogens implicated in this pathology trigger the host responses remains unknown. In this study we show that Helicobacter cinaedi (Hc) is a human pathogen linked to atherosclerosis development since at least 27% of sera from atherosclerotic patients specifically recognize a protein of the Hc proteome, that we named Cinaedi Atherosclerosis Inflammatory Protein (CAIP) (n = 71). CAIP appears to be implicated in this pathology because atheromatous plaques isolated from atherosclerotic patients are enriched in CAIP-specific T cells (10%) which, in turn, we show to drive a Th1 inflammation, an immunopathological response typically associated to atherosclerosis. Recombinant CAIP promotes the differentiation and maintenance of the pro-inflammatory profile of human macrophages and triggers the formation of foam cells, which are a hallmark of atherosclerosis. This study identifies CAIP as a relevant factor in atherosclerosis inflammation linked to Hc infection and suggests that preventing and eradicating Hc infection could reduce the incidence of atherosclerosis.
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Affiliation(s)
- Mario Milco D'Elios
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Francesca Vallese
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Nagaja Capitani
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Department of Life Sciences, University of Siena, Siena, Italy
| | - Marisa Benagiano
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Maria Lina Bernardini
- Department of Biology and Biotechnology, "C. Darwin", Sapienza University of Rome, Rome, Italy.,Institute Pasteur Italy - Fondazione Cenci Bolognetti, Rome, Italy
| | - Mirko Rossi
- Department of Food Hygiene and Environmental Health, University of Helsinki, Helsinki, Finland
| | - Gian Paolo Rossi
- Internal Medicine, Department of Medicine-DIMED, University of Padua, Italy
| | - Mauro Ferrari
- Vascular Surgery Unit, Cisanello University Hospital AOUP, Pisa, Italy
| | | | - Giuseppe Zanotti
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | | | - Gaia Codolo
- Department of Biology, University of Padua, Padua, Italy
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22
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Emmi G, Silvestri E, Bella CD, Grassi A, Benagiano M, Cianchi F, Squatrito D, Cantarini L, Emmi L, Selmi C, Prisco D, D’Elios MM. Cytotoxic Th1 and Th17 cells infiltrate the intestinal mucosa of Behcet patients and exhibit high levels of TNF-α in early phases of the disease. Medicine (Baltimore) 2016; 95:e5516. [PMID: 27930541 PMCID: PMC5266013 DOI: 10.1097/md.0000000000005516] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Gastrointestinal involvement is one of the most serious in Behçet disease, potentially leading to severe complications. Aim of this study was to investigate at mucosal level the T-cell responses in Behçet patients with early intestinal involvement. METHODS We isolated T cells from intestinal mucosa of 8 patients with intestinal symptoms started within 6 months. T lymphocytes were cloned and analyzed for surface phenotype and cytokines production. RESULTS We obtained 382 T-cell clones: 324 were CD4+ and 58 were CD8+. Within the 324 CD4+ clones, 195 were able to secrete IFN-γ and TNF-α, but not IL-4, nor IL-17 thus showing a polarized Th1 profile, whereas CD4 clones producing both IFN-γ and IL-17 (Th1/Th17 profile) were 79. Likewise, the number of CD8 clones producing type 1 cytokines was higher than those of CD8 clones producing both type 1 and 2 cytokines.Almost all intestinal-derived T-cell clones expressed perforin-mediated cytotoxicity and Fas-Fas Ligand-mediated pro-apoptotic activity. CONCLUSIONS Our results indicate that in the early stages of the disease, both Th1 and Th17 cells drive inflammation leading to mucosal damage via abnormal and long-lasting cytokines production as well as via both perforin- and Fas-Fas ligand-mediated cytotoxicity. Finally, all the T cells at mucosal level were able to produce large amount of TNF-α, suggesting that its production is a property of intestinal T cells of patients with early active intestinal disease. These results support the therapy with anti-TNF-α agents and suggest the use of anti-IL-17 monoclonal antibodies in Behçet patients with early intestinal involvement.
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Affiliation(s)
- Giacomo Emmi
- Department of Experimental and Clinical Medicine, University of Florence
| | - Elena Silvestri
- Department of Experimental and Clinical Medicine, University of Florence
| | - Chiara Della Bella
- Department of Experimental and Clinical Medicine, University of Florence
| | - Alessia Grassi
- Department of Experimental and Clinical Medicine, University of Florence
| | - Marisa Benagiano
- Department of Experimental and Clinical Medicine, University of Florence
| | | | - Danilo Squatrito
- Department of Experimental and Clinical Medicine, University of Florence
| | - Luca Cantarini
- Research Center of Systemic Autoinflammatory Diseases and Behçet's Disease Clinic, Department of Medical Sciences, Surgery and Neurosciences, University of Siena
| | - Lorenzo Emmi
- SOD Interdisciplinary Internal Medicine, Center for Autoimmune Systemic Diseases –Behçet Center and Lupus Clinic – AOU Careggi
| | - Carlo Selmi
- Rheumatology and Clinical Immunology, Humanitas Research Hospital
- BIOMETRA Department, University of Milan, Milan, Italy
| | - Domenico Prisco
- Department of Experimental and Clinical Medicine, University of Florence
- SOD Interdisciplinary Internal Medicine, Center for Autoimmune Systemic Diseases –Behçet Center and Lupus Clinic – AOU Careggi
| | - Mario Milco D’Elios
- Department of Experimental and Clinical Medicine, University of Florence
- SOD Interdisciplinary Internal Medicine, Center for Autoimmune Systemic Diseases –Behçet Center and Lupus Clinic – AOU Careggi
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23
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An obesity paradox: an inverse correlation between body mass index and atherosclerosis of the aorta. Cardiovasc Pathol 2016; 25:515-520. [PMID: 27683962 DOI: 10.1016/j.carpath.2016.09.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 08/17/2016] [Accepted: 09/07/2016] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND AIMS Morbid obesity generally has been associated with higher morbidity and mortality for a variety of diseases. However, a number of exceptions to this have been reported and referred to as the "obesity paradox." The purpose of the present study was to obtain objective data on aortic atherosclerosis and its relationship to body mass index (BMI, kg/m2), based on autopsy findings in a large cohort of overweight and obese decedents. METHODS Decedents were ≥18 years who had autopsies between 2003 and 2014, a subset of whom were morbidly obese (BMI≥40). Autopsy findings were reviewed and compared to a control group (BMI<40) who had consecutive autopsies performed between January 2013 and June 2014. Atherosclerosis was assessed by gross pathologic examination using a semiquantitative grading scale (from 0 to 3), and for statistical analysis, the scores were stratified into two groups: nonsevere (<2) or severe (≥2). RESULTS There were 304 decedents in the study: 66 were morbidly obese (BMI≥40), 94 were either Class I or II obese (BMI 30-40), 127 were either overweight (BMI 25.0-29.9) or normal weight (BMI 20-24.9), and 17 were underweight (BMI<20). Decedents with mild atherosclerosis were significantly younger than those with severe disease (55.2 vs. 67.3, P<.0001). Decedents were further stratified by age and BMI. Univariate analysis revealed that decedents >60 years were more likely to have severe atherosclerosis than those ≤60 years (61% vs. 30%, P<.0001). There was a highly significant (P=.008) inverse relationship between severe aortic atherosclerosis and BMI. Twenty of 66 decedents (30%) with a BMI≥40 had severe atherosclerosis vs. 122 of 238 decedents (51%) with BMIs<40 (P=.001). As BMI increased, the probability of developing severe disease decreased. Hypertension increased the probability of having severe atherosclerosis (54% vs. 33%, P=.007). After adjusting for other covariates, multivariable analysis revealed that age and hypertension were still positively correlated with the severity of atherosclerosis (P=.014 and 0.028, respectively), and the inverse relationship between BMI and atherosclerosis remained (adjusted relative risk of BMI≥40 vs. <40=0.64, 95% confidence interval: 0.4-1; P=.03). CONCLUSIONS Our data extend the previously described obesity paradox to another disease entity, atherosclerosis of the aorta. Morbid obesity appeared to have a protective effect for developing severe aortic atherosclerosis, for the reasons for which are yet to be determined. However, the mean age at death of decedents with BMIs≥40 was younger than those with BMIs in the 20-30 range (55.9 vs. 63.2 years, P=.001), confirming that morbid obesity was not associated with increased longevity.
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Abstract
Bacterial sphingomyelinases and phospholipases are a heterogeneous group of esterases which are usually surface associated or secreted by a wide variety of Gram-positive and Gram-negative bacteria. These enzymes hydrolyze sphingomyelin and glycerophospholipids, respectively, generating products identical to the ones produced by eukaryotic enzymes which play crucial roles in distinct physiological processes, including membrane dynamics, cellular signaling, migration, growth, and death. Several bacterial sphingomyelinases and phospholipases are essential for virulence of extracellular, facultative, or obligate intracellular pathogens, as these enzymes contribute to phagosomal escape or phagosomal maturation avoidance, favoring tissue colonization, infection establishment and progression, or immune response evasion. This work presents a classification proposal for bacterial sphingomyelinases and phospholipases that considers not only their enzymatic activities but also their structural aspects. An overview of the main physiopathological activities is provided for each enzyme type, as are examples in which inactivation of a sphingomyelinase- or a phospholipase-encoding gene impairs the virulence of a pathogen. The identification of sphingomyelinases and phospholipases important for bacterial pathogenesis and the development of inhibitors for these enzymes could generate candidate vaccines and therapeutic agents, which will diminish the impacts of the associated human and animal diseases.
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25
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Hu Y, Wang X, Yu S, Hou Y, Ma D, Hou M. Neutralizations of IL-17A and IL-21 regulate regulatory T cell/T-helper 17 imbalance via T-helper 17-associated signaling pathway in immune thrombocytopenia. Expert Opin Ther Targets 2016; 19:723-32. [PMID: 25976230 DOI: 10.1517/14728222.2015.1016499] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE The imbalance of regulatory T cell/T-helper 17 (Treg/Th17) is critical for the pathogenesis of immune thrombocytopenia (ITP) and IL-17A and IL-21 are overexpressed in ITP. The effects and mechanisms of IL-17A and IL-21 in Treg/Th17 imbalance and ITP pathophysiology are not clarified. METHODS Peripheral blood mononuclear cells (PBMCs) and CD3(+) T cells from ITP patients and healthy controls were treated with cytokines or antibodies to increase or neutralize IL-17A or IL-21 levels for 72 h. Treg/Th17 differentiation, apoptosis, proliferation and Th17 differentiation-associated transcriptional factors were analyzed. RESULTS Natural Treg/Th17 decreased in newly diagnosed ITP patients and recovered after remission. IL-17A or IL-21 increased Th17, decreased Tregs and downregulated Treg/Th17 in vitro. Conversely, neutralization of IL-17A or IL-21 decreased Th17, increased Tregs and up-regulated Treg/Th17. The reverse effects of IL-17A or IL-21 were mediated by Th17-associated transcriptional factors. IL-17A or IL-21 enhanced STAT-1, STAT-3, STAT-5 or RAR-related orphan receptor C (RORC), whereas anti-IL-17A or anti-IL-21 mAb downregulated STAT-1, STAT-5 or RORC transcripts in ITP PBMCs. Proliferation showed no significant difference. IL-21 inhibited apoptosis in ITP PBMCs. CONCLUSION IL-17A and IL-21 induce Th17 and inhibit Tregs re-differentiation via Th17-associated signaling pathway in ITP patients in vitro. It highlights the potential value of IL-17A or IL-21 blockade as a novel therapeutic target for ITP.
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Affiliation(s)
- Yu Hu
- Shandong University, Qilu Hospital, Department of Hematology , Jinan , China
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26
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Ryu H, Chung Y. Regulation of IL-17 in atherosclerosis and related autoimmunity. Cytokine 2015; 74:219-27. [DOI: 10.1016/j.cyto.2015.03.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/11/2015] [Accepted: 03/12/2015] [Indexed: 12/14/2022]
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27
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Del Porto F, Proietta M, di Gioia C, Cifani N, Dito R, Fantozzi C, Ferri L, Fabriani L, Rossi M, Tritapepe L, Taurino M. FGF-23 levels in patients with critical carotid artery stenosis. Intern Emerg Med 2015; 10:437-44. [PMID: 25573621 DOI: 10.1007/s11739-014-1183-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 12/20/2014] [Indexed: 11/27/2022]
Abstract
The aim of this study was to evaluate fibroblast growth factor (FGF)-23 serum levels and its tissue expression in patients with critical carotid artery stenosis (CAS). We selected 35 patients with critical CAS undergoing carotid thromboendoarterectomy. In each patient, FGF-23 serum levels were evaluated just prior to the surgery (t0) and 30 min (t1) thereafter. Moreover, macrophage cytokines were measured at baselines. Carotid artery specimens were used for immune histochemistry. On the basis of the histology, the patients were divided into 2 groups: A with complicated plaque and B with uncomplicated plaque. Twenty complicated plaques (57.14%, group A,) and 15 uncomplicated (42.86%, group B) were evaluated: calcifications were present in 16/20 (80%) complicated plaques and in 6/15 (40%) uncomplicated plaques. An inflammatory infiltrate was observed in 26/35 carotid samples: 18/26 (69.23%) complicated and 8/26 (30.76%) uncomplicated. FGF-23(+) cells were present in 17/20 complicated (85%) and in 8 uncomplicated (53%) plaques. The double-staining immunofluorescence confirmed that macrophage cells (CD68(+)) were also positive for FGF-23 staining. Serum levels of FGF-23 were significantly higher in group A versus group B at t0 (p < 0.05) and t1 (p 0.0047). Moreover, in group A patients a significant increase of FGF-23 serum levels was observed at t1 in comparison with t0 (p 0.0011). Our results suggest that FGF-23 acts in the late phases of atherosclerotic disease and may potentially represent a marker of complications in critical CAS.
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Affiliation(s)
- Flavia Del Porto
- Dipartimento di Medicina Clinica e Molecolare, Facoltà di Medicina e Psicologia, UOC Medicina 3, Azienda Ospedaliera Sant'Andrea, Università "La Sapienza", Rome, Italy,
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28
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Amedei A, Pimpinelli N, Grassi A, Bella CD, Niccolai E, Brancati S, Benagiano M, D'Elios S, Bosi A, D'Elios MM. Skin CD30(+) T cells and circulating levels of soluble CD30 are increased in patients with graft versus host disease. AUTOIMMUNITY HIGHLIGHTS 2015; 5:21-6. [PMID: 26000151 PMCID: PMC4389013 DOI: 10.1007/s13317-013-0054-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 07/30/2013] [Indexed: 11/17/2022]
Abstract
Objective To determine serum soluble CD30 (sCD30) levels in patients with graft versus host disease (GVHD). Methods Serum soluble CD30 levels and IgE levels were assayed by a sensitive ELISA in 57 patients with bone marrow transplantation, and in 44 healthy controls. We analyzed the type of effector T cells in patients with GVHD. Results Serum levels of sCD30 and serum IgE levels were significantly higher (p values <0.05) in patients with acute and chronic GVHD than in healthy controls. We found that CD30+ T-cells are present in the skin of patients with GVHD. Conclusion These results suggest that serum sCD30 levels may be helpful for the management of patients with bone marrow transplantation.
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Affiliation(s)
- Amedeo Amedei
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Nicola Pimpinelli
- Dipartimento di Chirurgia e Medicina Traslazionale, Università di Firenze, Florence, Italy
| | - Alessia Grassi
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Chiara Della Bella
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Elena Niccolai
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Simona Brancati
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Marisa Benagiano
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Sofia D'Elios
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Alberto Bosi
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
| | - Mario M D'Elios
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Largo Brambilla 3, 50134 Florence, Italy
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29
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Spencer C, Brown HA. Biochemical characterization of a Pseudomonas aeruginosa phospholipase D. Biochemistry 2015; 54:1208-18. [PMID: 25565226 PMCID: PMC4337821 DOI: 10.1021/bi501291t] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Phospholipase D is a ubiquitous protein in eukaryotes that hydrolyzes phospholipids to generate the signaling lipid phosphatidic acid (PtdOH). PldA, a Pseudomonas aeruginosa PLD, is a secreted protein that targets bacterial and eukaryotic cells. Here we have characterized the in vitro factors that modulate enzymatic activity of PldA, including divalent cations and phosphoinositides. We have identified several similarities between the eukaryotic-like PldA and the human PLD isoforms, as well as several properties in which the enzymes diverge. Notable differences include the substrate preference and transphosphatidylation efficiency for PldA. These findings offer new insights into potential regulatory mechanisms of PldA and its role in pathogenesis.
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Affiliation(s)
- Cierra Spencer
- Department of Pharmacology, and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - H. Alex Brown
- Department of Pharmacology, and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Biochemistry, and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
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He C, Yang Z, Lu NH. Helicobacter pylori-an infectious risk factor for atherosclerosis? J Atheroscler Thromb 2014; 21:1229-42. [PMID: 25342566 DOI: 10.5551/jat.25775] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Accumulating evidence implicates Helicobacter pylori (H. pylori) infection in the pathogenesis of certain diseases localized outside the stomach, particularly those characterized by persistent and low-grade systematic inflammation. Recently, the role of H. pylori infection in the development of atherosclerosis and its clinical complications has received attention. Atherosclerosis is a high-cost disease, and acute events resulting from this condition rank first among morbidity and mortality statistics in most industrialized countries. Atherosclerosis is a multifactorial disorder, and traditional risk factors explain only 50% of its etiology. Therefore, identifying new risk factors for atherosclerosis is necessary. Serological studies indicate that chronic H. pylori infection, especially that with more virulent strains, may predispose patients to the onset of atherosclerosis and related adverse clinical events, and PCR studies have detected H. pylori DNA in atherosclerotic plaques, although this finding remains controversial. If this association were to be confirmed, its importance to public health would be substantial, as the eradication of H. pylori is more straightforward and less costly than the long-term treatment of other risk factors. This review investigates the potential relationship between H. pylori infection and atherosclerosis from both epidemiological and pathogenic perspectives and characterizes the potential mechanisms underlying this correlation.
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Affiliation(s)
- Cong He
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University
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31
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Suwara MI, Vanaudenaerde BM, Verleden SE, Vos R, Green NJ, Ward C, Borthwick LA, Vandermeulen E, Lordan J, Van Raemdonck DE, Corris PA, Verleden GM, Fisher AJ. Mechanistic differences between phenotypes of chronic lung allograft dysfunction after lung transplantation. Transpl Int 2014; 27:857-67. [PMID: 24750386 PMCID: PMC4282071 DOI: 10.1111/tri.12341] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 01/14/2014] [Accepted: 04/14/2014] [Indexed: 12/12/2022]
Abstract
Distinct phenotypes of chronic lung allograft dysfunction (CLAD) after lung transplantation are emerging with lymphocytic bronchiolitis (LB)/azithromycin reversible allograft dysfunction (ARAD), classical or fibrotic bronchiolitis obliterans syndrome (BOS), and restrictive allograft syndrome (RAS) proposed as separate entities. We have additionally identified lung transplant recipients with prior LB, demonstrating persistent airway neutrophilia (PAN) despite azithromycin treatment. The aim of this study was to evaluate differences in the airway microenvironment in different phenotypes of CLAD. Bronchoalveolar lavage (BAL) from recipients identified as stable (control), LB/ARAD, PAN, BOS, and RAS were evaluated for differential cell counts and concentrations of IL-1α, IL-1β, IL-6, IL-8, and TNF-α. Primary human bronchial epithelial cells were exposed to BAL supernatants from different phenotypes and their viability measured. BOS and RAS showed increased BAL neutrophilia but no change in cytokine concentrations compared with prediagnosis. In both LB/ARAD and PAN, significant increases in IL-1α, IL-1β, and IL-8 were present. BAL IL-6 and TNF-α concentrations were increased in PAN and only this phenotype demonstrated decreased epithelial cell viability after exposure to BAL fluid. This study demonstrates clear differences in the airway microenvironment between different CLAD phenotypes. Systematic phenotyping of CLAD may help the development of more personalized approaches to treatment.
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Affiliation(s)
- Monika I Suwara
- Fibrosis Research Group, Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK
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Bachmann NL, Polkinghorne A, Timms P. Chlamydia genomics: providing novel insights into chlamydial biology. Trends Microbiol 2014; 22:464-72. [PMID: 24882432 DOI: 10.1016/j.tim.2014.04.013] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 04/18/2014] [Accepted: 04/28/2014] [Indexed: 12/12/2022]
Abstract
Chlamydiaceae are obligate intracellular pathogens that have successfully evolved to colonize a diverse range of hosts. There are currently 11 described species of Chlamydia, most of which have a significant impact on the health of humans or animals. Expanding chlamydial genome sequence information has revolutionized our understanding of chlamydial biology, including aspects of their unique lifecycle, host-pathogen interactions, and genetic differences between Chlamydia strains associated with different host and tissue tropisms. This review summarizes the major highlights of chlamydial genomics and reflects on the considerable impact these have had on understanding the biology of chlamydial pathogens and the changing nature of genomics tools in the 'post-genomics' era.
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Affiliation(s)
- Nathan L Bachmann
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4558, Australia
| | - Adam Polkinghorne
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4558, Australia
| | - Peter Timms
- Faculty of Science, Health, Education and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4558, Australia.
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Marangoni A, Bergamini C, Fato R, Cavallini C, Donati M, Nardini P, Foschi C, Cevenini R. Infection of human monocytes by Chlamydia pneumoniae and Chlamydia trachomatis: an in vitro comparative study. BMC Res Notes 2014; 7:230. [PMID: 24721461 PMCID: PMC3984436 DOI: 10.1186/1756-0500-7-230] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 04/03/2014] [Indexed: 12/24/2022] Open
Abstract
Background An increasing number of studies suggest that chlamydiae can infect immune cells. The altered immune cell function could contribute to the progression of several chronic inflammatory diseases. The aim of this study was to comparatively evaluate Chlamydia pneumoniae (CP) and Chlamydia trachomatis (CT) interactions with in vitro infected human blood monocytes. Results Fresh isolated monocytes were infected with viable CP and CT elementary bodies and infectivity was evaluated by recultivating disrupted monocytes in permissive epithelial cells. The production of reactive oxygen and nitrogen species was studied in the presence of specific fluorescent probes. Moreover, TNF-α, INF-α, INF-β and INF-γ gene expression was determined. CT clearance from monocytes was complete at any time points after infection, while CP was able to survive up to 48 hours after infection. When NADPH oxydase or nitric oxide synthase inhibitors were used, CT infectivity in monocytes was restored, even if at low level, and CT recovery’s rate was comparable to CP one. CT-infected monocytes produced significantly higher levels of reactive species compared with CP-infected monocytes, at very early time points after infection. In the same meanwhile, TNF-α and INF-γ gene expression was significantly increased in CT-infected monocytes. Conclusions Our data confirm that CP, but not CT, is able to survive in infected monocytes up to 48 hours post-infection. The delay in reactive species and cytokines production by CP-infected monocytes seems to be crucial for CP survival.
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Affiliation(s)
- Antonella Marangoni
- Microbiology, DIMES, University of Bologna, S,Orsola Hospital, via Massarenti 9, 40138 Bologna, Italy.
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Significant association between serum interleukin-6 and Helicobacter pylori antibody levels among H. pylori-positive Japanese adults. Mediators Inflamm 2013; 2013:142358. [PMID: 24453409 PMCID: PMC3881527 DOI: 10.1155/2013/142358] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 11/30/2013] [Indexed: 12/14/2022] Open
Abstract
Background. Interleukin-6 (IL-6) is a multifunctional cytokine produced by many types of cells. Inflammation plays a key role in the pathogenesis of atherosclerosis that is an underlying cause of coronary heart disease (CHD). Since the 1990s, some studies have shown an association between H. pylori infection and CHD, which may be mediated by inflammation. Therefore, this study aimed to evaluate the association between serum anti-H. pylori IgG levels and serum IL-6 levels in H. pylori-infected adults. Methods. We enrolled 158 subjects who visited a clinic located in an urban area to be tested for H. pylori infection, using the 13C-urea breath test, and who were found to be infected and subsequently received eradication. Results. The geometric mean serum IL-6 level was 1.78 pg/mL for men, 1.57 pg/mL for women, and 1.64 pg/mL overall. Logarithms of serum IL-6 levels were positively correlated with logarithms of serum H. pylori IgG levels (r = 0.24, P = 0.002). In multiple linear regression analysis adjusting for sex and age, the serum IL-6 level was still significantly associated with the IgG level in all subjects (β = 0.18, P = 0.012). Conclusion. Higher H. pylori IgG levels were significantly associated with higher serum IL-6 levels among H. pylori-infected individuals.
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Andrew DW, Cochrane M, Schripsema JH, Ramsey KH, Dando SJ, O’Meara CP, Timms P, Beagley KW. The duration of Chlamydia muridarum genital tract infection and associated chronic pathological changes are reduced in IL-17 knockout mice but protection is not increased further by immunization. PLoS One 2013; 8:e76664. [PMID: 24073293 PMCID: PMC3779189 DOI: 10.1371/journal.pone.0076664] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Accepted: 08/25/2013] [Indexed: 12/12/2022] Open
Abstract
IL-17 is believed to be important for protection against extracellular pathogens, where clearance is dependent on neutrophil recruitment and local activation of epithelial cell defences. However, the role of IL-17 in protection against intracellular pathogens such as Chlamydia is less clear. We have compared (i) the course of natural genital tract C. muridarum infection, (ii) the development of oviduct pathology and (iii) the development of vaccine-induced immunity against infection in wild type (WT) BALB/c and IL-17 knockout mice (IL-17-/-) to determine if IL-17-mediated immunity is implicated in the development of infection-induced pathology and/or protection. Both the magnitude and duration of genital infection was significantly reduced in IL-17-/- mice compared to BALB/c. Similarly, hydrosalpinx was also greatly reduced in IL-17-/- mice and this correlated with reduced neutrophil and macrophage infiltration of oviduct tissues. Matrix metalloproteinase (MMP) 9 and MMP2 were increased in WT oviducts compared to IL-17-/- animals at day 7 post-infection. In contrast, oviducts from IL-17-/- mice contained higher MMP9 and MMP2 at day 21. Infection also elicited higher levels of Chlamydia-neutralizing antibody in serum of IL-17-/- mice than WT mice. Following intranasal immunization with C. muridarumMajor Outer Membrane Protein (MOMP) and cholera toxin plus CpG adjuvants, significantly higher levels of chlamydial MOMP-specific IgG and IgA were found in serum and vaginal washes of IL-17-/- mice. T cell proliferation and IFNγ production by splenocytes was greater in WT animals following in vitro re-stimulation, however vaccination was only effective at reducing infection in WT, not IL-17-/- mice. Intranasal or transcutaneous immunization protected WT but not IL-17-/- mice against hydrosalpinx development. Our data show that in the absence of IL-17, the severity of C. muridarum genital infection and associated oviduct pathology are significantly attenuated, however neither infection or pathology can be reduced further by vaccination protocols that effectively protect WT mice.
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Affiliation(s)
- Dean W. Andrew
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Melanie Cochrane
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Justin H. Schripsema
- Microbiology and Immunology Department, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, Illinois, United States of America
| | - Kyle H. Ramsey
- Microbiology and Immunology Department, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, Illinois, United States of America
| | - Samantha J. Dando
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Connor P. O’Meara
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Peter Timms
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
| | - Kenneth W. Beagley
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland, Australia
- * E-mail:
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Landsem A, Nielsen EW, Fure H, Christiansen D, Ludviksen JK, Lambris JD, Østerud B, Mollnes TE, Brekke OL. C1-inhibitor efficiently inhibits Escherichia coli-induced tissue factor mRNA up-regulation, monocyte tissue factor expression and coagulation activation in human whole blood. Clin Exp Immunol 2013; 173:217-29. [PMID: 23607270 DOI: 10.1111/cei.12098] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/27/2013] [Indexed: 12/14/2022] Open
Abstract
Both the complement system and tissue factor (TF), a key initiating component of coagulation, are activated in sepsis, and cross-talk occurs between the complement and coagulation systems. C1-inhibitor (C1-INH) can act as a regulator in both systems. Our aim in this study was to examine this cross-talk by investigating the effects of C1-INH on Escherichia coli-induced haemostasis and inflammation. Fresh human whole blood collected in lepirudin was incubated with E. coli or ultrapurified E. coli lipopolysaccharide (LPS) in the absence or presence of C1-INH or protease-inactivated C1-INH. C3 activation was blocked by compstatin, a specific C3 convertase inhibitor. TF mRNA was measured using reverse transcription-quantitative polymerase chain reaction (RT-qPCR), and TF surface expression was measured by flow cytometry. In plasma, the terminal complement complex, prothrombin F1·2 (PTF1·2) and long pentraxin 3 (PTX3) were measured by enzyme-linked immunosorbent assay (ELISA). Cytokines were analysed using a multiplex kit. C1-INH (1·25-5 mg/ml) reduced both LPS- and E. coli-induced coagulation, measured as a reduction of PTF1·2 in plasma, efficiently and dose-dependently (P < 0·05). Both LPS and E. coli induced marked up-regulation of TF mRNA levels and surface expression on whole blood monocytes. This up-regulation was reduced efficiently by treatment with C1-INH (P < 0·05). C1-INH reduced the release of PTX3 (P < 0·05) and virtually all cytokines measured (P < 0·05). Complement activation was inhibited more efficiently with compstatin than with C1-INH. C1-INH inhibited most of the other readouts more efficiently, consistent with additional non-complement-dependent effects. These results indicate that complement plays a role in activating coagulation during sepsis and that C1-INH is a broad-spectrum attenuator of the inflammatory and haemostatic responses.
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Affiliation(s)
- A Landsem
- Department of Laboratory Medicine, Nordland Hospital, Bodø, Norway
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Pedicino D, Giglio AF, Galiffa VA, Cialdella P, Trotta F, Graziani F, Liuzzo G. Infections, immunity and atherosclerosis: Pathogenic mechanisms and unsolved questions. Int J Cardiol 2013; 166:572-83. [DOI: 10.1016/j.ijcard.2012.05.098] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 05/02/2012] [Accepted: 05/27/2012] [Indexed: 01/19/2023]
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Joshi R, Khandelwal B, Joshi D, Gupta OP. Chlamydophila pneumoniae infection and cardiovascular disease. NORTH AMERICAN JOURNAL OF MEDICAL SCIENCES 2013; 5:169-81. [PMID: 23626952 PMCID: PMC3632020 DOI: 10.4103/1947-2714.109178] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Atherosclerosis is a multifactorial vascular inflammatory process; however, the inciting cause for inflammation remains unclear. Two decades ago, Chlamydophila pneumoniae (formerly Chlamydia pneumoniae) infection was proposed as a putative etiologic agent. We performed a PubMed search using the keywords Chlamydia and atherosclerosis in a Boolean query to identify published studies on C. pneumoniae and its role in atherogenesis, and to understand research interest in this topic. We found 1,652 published articles on this topic between 1991 and 2011. We analyzed relevant published studies and found various serological, molecular, and animal modeling studies in the early period. Encouraged by positive results from these studies, more than a dozen antibiotic clinical-trials were subsequently conducted, which did not find clinical benefits of anti-Chlamydophila drug therapy. While many researchers believe that the organism is still important, negative clinical trials had a similar impact on overall research interest. With many novel mechanisms identified for atherogenesis, there is a need for newer paradigms in Chlamydophila-atherosclerosis research.
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Affiliation(s)
- Rajnish Joshi
- Department of Medicine, Sikkim Manipal Institute of Medical Sciences, Gangtok, India
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Chalubinski M, Wojdan K, Dorantowicz R, Jackowska P, Gorzelak P, Broncel M. Comprehensive insight into immune regulatory mechanisms and vascular wall determinants of atherogenesis - emerging perspectives of immunomodulation. Arch Med Sci 2013; 9:159-65. [PMID: 23515919 PMCID: PMC3598149 DOI: 10.5114/aoms.2013.33355] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Revised: 07/12/2012] [Accepted: 10/02/2012] [Indexed: 12/14/2022] Open
Abstract
For many years atherosclerosis was believed to be the passive accumulation of cholesterol in vessel walls. Today the picture is more complex, as immune processes occur in atherogenesis. Considerable attention is focused on the particular role of adaptive immune responses orchestrated by T cell subsets. Since the role of Th1/Th2 balance and Th1 cell domination in atherogenesis is already known, the involvement of regulatory T lymphocytes and recently described Th17 cells raises new concerns. On one hand, each of these cells may specifically drive responses of vascular wall tissues and immune cells; however, they are subject to the control of a plethora of tissue- and pathogen-derived agents. Due to ineffective tissue regeneration, remodeling of the vascular wall occurs. The understanding of the immune regulatory network gives perspectives of innovative immunomodulatory therapies of atherosclerosis and the prevention of its complications, such as coronary artery disease.
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Affiliation(s)
- Maciej Chalubinski
- Laboratory of Tissue Pharmacology, Department of Internal Medicine and Clinical Pharmacology, Medical University of Lodz, Poland
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Swardfager W, Winer DA, Herrmann N, Winer S, Lanctôt KL. Interleukin-17 in post-stroke neurodegeneration. Neurosci Biobehav Rev 2013; 37:436-47. [PMID: 23370232 DOI: 10.1016/j.neubiorev.2013.01.021] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 11/10/2012] [Accepted: 01/20/2013] [Indexed: 12/15/2022]
Abstract
Stroke is a leading cause of physical disability with neurodegenerative sequelae such as dementia and depression causing significant excess morbidity. Stroke severity can be exacerbated by apoptotic cell death in ischemic tissue, of which inflammatory activity is a key determinant. Studies have identified harmful and beneficial sets of T lymphocytes that infiltrate the brain post-stroke and their activation signals, suggesting that they might be targeted for therapeutic benefit. Animal models and human studies implicate interleukin(IL)-17 and its congeners (e.g. IL-23, IL-21) as mediators of tissue damage in the delayed phase of the inflammatory cascade and the involvement of T lymphocytes in propagating IL-17 release. In this review, we highlight the current understanding of IL-17 secreting cells, including sets of CD4(+) αβ and CD4(-) γδ T lymphocytes, as potentially important mediators of brain pathology post-stroke. Interactions between the IL-17 axis and innate pathways, positive feedback mechanisms that prolong or amplify IL-17, and IL-17 regulatory pathways may offer intervention targets to enhance recovery, prevent long-term decline, and improve quality of life.
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Affiliation(s)
- Walter Swardfager
- Neuropsychopharmacology Research Group, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario M4N 3M5, Canada
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Profumo E, Buttari B, Saso L, Capoano R, Salvati B, Riganò R. T lymphocyte autoreactivity in inflammatory mechanisms regulating atherosclerosis. ScientificWorldJournal 2012; 2012:157534. [PMID: 23304078 PMCID: PMC3529860 DOI: 10.1100/2012/157534] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 11/22/2012] [Indexed: 02/06/2023] Open
Abstract
Atherosclerosis has been clearly demonstrated to be a chronic inflammatory disease of the arterial wall. Both cells of the innate and the acquired immune system, particularly monocytes and T lymphocytes, are implicated in the atherogenic process, producing different cytokines with pro- and anti-inflammatory effects. The majority of pathogenic T cells involved in atherosclerosis are of the Th1 profile, that has been correlated positively with coronary artery disease. Many studies conducted to evaluate the molecular factors responsible for the activation of T cells have demonstrated that the main antigenic targets in atherosclerosis are modified endogenous structures. These self-molecules activate autoimmune reactions mainly characterized by the production of Th1 cytokines, thus sustaining the inflammatory mechanisms involved in endothelial dysfunction and plaque development. In this paper we will summarize the different T-cell subsets involved in atherosclerosis and the best characterized autoantigens involved in cardiovascular inflammation.
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Affiliation(s)
- Elisabetta Profumo
- Dipartimento di Malattie Infettive, Parassitarie ed Immunomediate, Istituto Superiore di Sanità, viale Regina Elena 299, 00161 Rome, Italy
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Businaro R. Neuroimmunology of the atherosclerotic plaque: a morphological approach. J Neuroimmune Pharmacol 2012; 8:15-27. [PMID: 23150034 DOI: 10.1007/s11481-012-9421-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 11/05/2012] [Indexed: 01/13/2023]
Abstract
Atherosclerosis is a chronic inflammatory process, lasting for several decades until the onset of its clinical manifestations. The progression of the atherosclerotic lesion to a stable fibrotic plaque, narrowing the vascular lumen, or to a vulnerable plaque leading to main vascular complications, is associated to the involvement of several cell subpopulations of the innate as well as of the adaptive immunity, and to the release of chemokines and pro-inflammatory cytokines. Emerging evidence outlines that the cardiovascular risk is dependent on stress-mediators influencing cell migration and vascular remodeling. The view that atherosclerosis is initiated by monocytes and lymphocytes adhering to dysfunctional endothelial cells is substantiated by experimental and clinical observations. Macrophages, dendritic cells, T and B lymphocytes, granulocytes accumulating into the subendothelial space secrete and are stimulated by soluble factors, including peptides, proteases and cytokines acting synergistically. The final step of the disease, leading to plaque destabilization and rupture, is induced by the release, at the level of the fibrous cap, of metalloproteinases and elastases by the activated leukocytes which accumulate locally. Recruitment of specific cell subpopulations as well as the progression of atherosclerotic lesions towards a stable or an unstable phenotype, are related to the unbalance between pro-atherogenic and anti-atherogenic factors. In this connection stress hormones deserve particular attention, since their role in vascular remodeling, via vascular smooth cell proliferation, as well as in neoangiogenesis, via stimulation of endothelial cell proliferation and migration, has been already established.
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Affiliation(s)
- Rita Businaro
- Department of Medico-Surgical Sciences and Biotechnology, Sapienza University of Rome, Corso della Repubblica 79, 04100 Latina, Italy.
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Chiappini E, Della Bella C, Bonsignori F, Sollai S, Amedei A, Galli L, Niccolai E, Del Prete G, Singh M, D'Elios MM, de Martino M. Potential role of M. tuberculosis specific IFN-γ and IL-2 ELISPOT assays in discriminating children with active or latent tuberculosis. PLoS One 2012; 7:e46041. [PMID: 23029377 PMCID: PMC3461005 DOI: 10.1371/journal.pone.0046041] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 08/27/2012] [Indexed: 11/25/2022] Open
Abstract
Background Although currently available IGRA have been reported to be promising markers for TB infection, they cannot distinguish active tuberculosis (TB) from latent infection (LTBI). Objective Children with LTBI, active TB disease or uninfected were prospectively evaluated by an in-house ELISPOT assay in order to investigate possible immunological markers for a differential diagnosis between LTBI and active TB. Methods Children at risk for TB infection prospectively enrolled in our infectious disease unit were evaluated by in-house IFN-γ and IL-2 based ELISPOT assays using a panel of Mycobacterium tuberculosis antigens. Results Twenty-nine children were classified as uninfected, 21 as LTBI and 25 as active TB cases (including 5 definite and 20 probable cases). Significantly higher IFN-γ ELISPOT responses were observed in infected vs. uninfected children for ESAT-6 (p<0.0001), CFP-10 (p<0.0001), TB 10.3 (p = 0.003), and AlaDH (p = 0.001), while differences were not significant considering Ag85B (p = 0.063), PstS1 (p = 0.512), and HspX (16 kDa) (p = 0.139). IL-2 ELISPOT assay responses were different for ESAT-6 (p<0.0001), CFP-10 (p<0.0001), TB 10.3 (p<0.0001), HspX (16 kDa) (p<0.0001), PstS1 (p<0.0001) and AlaDH (p = 0.001); but not for Ag85B (p = 0.063). Comparing results between children with LTBI and those with TB disease differences were significant for IFN-γ ELISPOT only for AlaDH antigen (p = 0.021) and for IL-2 ELISPOT assay for AlaDH (p<0.0001) and TB 10.3 antigen (p = 0.043). ROC analyses demonstrated sensitivity of 100% and specificity of 81% of AlaDH-IL-2 ELISPOT assay in discriminating between latent and active TB using a cut off of 12.5 SCF per million PBMCs. Conclusion Our data suggest that IL-2 based ELISPOT with AlaDH antigen may be of help in discriminating children with active from those with latent TB.
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Affiliation(s)
- Elena Chiappini
- Anna Meyer University Hospital, Department of Science for Woman and Child Health, University of Florence, Italy.
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Simon T, Taleb S, Danchin N, Laurans L, Rousseau B, Cattan S, Montely JM, Dubourg O, Tedgui A, Kotti S, Mallat Z. Circulating levels of interleukin-17 and cardiovascular outcomes in patients with acute myocardial infarction. Eur Heart J 2012; 34:570-7. [DOI: 10.1093/eurheartj/ehs263] [Citation(s) in RCA: 121] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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The emerging role of IL-17 in the pathogenesis of psoriasis: preclinical and clinical findings. J Invest Dermatol 2012; 133:17-26. [PMID: 22673731 DOI: 10.1038/jid.2012.194] [Citation(s) in RCA: 325] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although the histological changes seen in psoriasis have long been well characterized, the underlying cellular and molecular mechanisms have only begun to be elucidated over the past 20 years. Proinflammatory factors such as tumor necrosis factor (TNF)-α have a central role in psoriasis pathogenesis, and many T-helper 1 (Th1) cytokines and messenger RNAs are elevated in psoriatic lesions. IL-17A, IL-17F, and other Th17 cell-derived cytokines have been shown in murine models to induce features that mimic human psoriasis. This review focuses on the emerging biology of the IL-17 cytokine family in psoriasis, and on the molecular and genetic information gained from animal models and human clinical studies that confirm IL-17 as a crucial proinflammatory cytokine in psoriasis. Expression of IL-17A, IL-17C, and IL-17F is strikingly increased in psoriatic lesions, and successful therapy is associated with restoration of the expression of a wide range of genes (including effector molecules downstream of IL-17 such as cytokines, chemokines, and antimicrobial peptides) to near-normal levels. Therapeutic agents in development that target IL-17 are discussed, and an emerging model of the key role of IL-17 in the pathogenesis of psoriasis is presented.
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