1
|
van Woudenbergh E, van Rooijen DM, Veldman-Wolf JJ, Nicolaie MA, Huynen MA, van der Klis FRM, de Jonge MI, den Hartog G. Effect of age and season on respiratory mucosal immune marker profiles. J Allergy Clin Immunol 2024; 153:1681-1691.e12. [PMID: 38142822 DOI: 10.1016/j.jaci.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 12/05/2023] [Accepted: 12/07/2023] [Indexed: 12/26/2023]
Abstract
BACKGROUND The upper respiratory tract is continuously exposed to microorganisms and noxious elements, leading to local immune responses and the secretion of immune markers. While several studies describe immune marker profiles in respiratory mucosal samples in defined patient cohorts, mucosal immune profiles from the general population during the different seasons are lacking. Such baseline profiles are essential to understand the effect of various exposures to the mucosal immune system throughout life. OBJECTIVE We sought to establish baseline local upper respiratory mucosal immune profiles in the general population and assess these profiles with regard to age, sex, seasonality, and basic health and lifestyle factors. METHODS We measured the concentrations of 35 immune markers involved in a broad range of immunological processes at the mucosa in nasopharyngeal swab samples from 951 individuals, aged 0 to 86 years, from a nationwide study. RESULTS Clustering analysis showed that immune marker profiles clearly reflected immunological functions, such as tissue regeneration and antiviral responses. Immune marker concentrations changed strongly with seasonality and age, with the most profound changes occurring in the first 25 years of life; they were also associated with sex, body mass index, smoking, mild symptoms of airway infection, and chronic asthma and hay fever. CONCLUSION Immunological analyses of noninvasive mucosal samples provide insight into mucosal immune responses to microbial and noxious element exposure in the general population. These data provide a baseline for future studies on respiratory mucosal immune responses and for the development of mucosal immune-based diagnostics.
Collapse
Affiliation(s)
- Esther van Woudenbergh
- Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, The Netherlands; Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Debbie M van Rooijen
- Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Janine J Veldman-Wolf
- Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Mioara A Nicolaie
- Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Martijn A Huynen
- Centre for Molecular and Biomolecular Informatics, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Fiona R M van der Klis
- Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Marien I de Jonge
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Gerco den Hartog
- Centre for Immunology of Infectious Diseases and Vaccines, National Institute for Public Health and the Environment, Bilthoven, The Netherlands; Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands.
| |
Collapse
|
2
|
Liu Y, Fu L, Liu Z. The Role and Clinical Relevance of Osteopontin in Allergic Airway Diseases. J Clin Med 2023; 12:jcm12062433. [PMID: 36983433 PMCID: PMC10057512 DOI: 10.3390/jcm12062433] [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: 02/14/2023] [Revised: 03/06/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
The airway epithelium is exposed to numerous external irritants including infectious agents, environmental allergens, and atmospheric pollutants, releasing epithelial cytokines including thymic stromal lymphopoietin (TSLP), IL-33, and IL-25 and initiating downstream type 2 (IL-4, IL-13, and IL-5) and IgE-driven pathways. These pathways trigger the initiation and progression of allergic airway diseases, including chronic rhinosinusitis with nasal polyps (CRSwNP), allergic rhinitis (AR), and allergic asthma. However, the use of biological agents that target downstream cytokines, such as IL-5, IL-4, and IL-13 receptors and IgE, might not be sufficient to manage some patients successfully. Instead of blocking downstream cytokines, targeting upstream epithelial cytokines has been proposed to address the complex immunologic networks associated with allergic airway diseases. Osteopontin (OPN), an extracellular matrix glyco-phosphoprotein, is a key mediator involved in Th1-related diseases, including systemic lupus erythematosus, multiple sclerosis, inflammatory bowel disease, and rheumatoid arthritis. Emerging evidence, including ours, indicates that epithelial-cell-derived OPN also plays an essential role in Th2-skewed airway diseases, including CRSwNP, AR, and allergic asthma involving the Th17 response. Therefore, we reviewed the current knowledge of epithelial-cell-derived OPN in the pathogenesis of three type-2-biased airway diseases and provided a direction for its future investigation and clinical relevance.
Collapse
Affiliation(s)
- Yang Liu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Clinical Research Center for Nasal Inflammatory Diseases, Wuhan 430030, China
| | - Li Fu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Clinical Research Center for Nasal Inflammatory Diseases, Wuhan 430030, China
| | - Zheng Liu
- Department of Otolaryngology-Head and Neck Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Institute of Allergy and Clinical Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Clinical Research Center for Nasal Inflammatory Diseases, Wuhan 430030, China
| |
Collapse
|
3
|
Zeng Q, Xi L, Zeng Y, Liu W, Zhou L. Osteopontin mediated eosinophils activation by group II innate lymphoid cells. World Allergy Organ J 2022; 15:100659. [PMID: 36017066 PMCID: PMC9389302 DOI: 10.1016/j.waojou.2022.100659] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/14/2022] [Accepted: 05/23/2022] [Indexed: 12/02/2022] Open
Abstract
Background Osteopontin (OPN) can regulate Th2 inflammation in allergic rhinitis (AR). A recent study suggested that group II innate lymphoid cells (ILC2s) were very important for airway inflammation. But the role of OPN in ILC2s regulation is not explored. Methods Purified ILC2s were stimulated by human recombinant OPN. The expression of GATA3 and RORα was assayed using real-time polymerase chain reaction (PCR) and enzyme linked immunosorbent assay. MiR-181a was transfected into eosinophils to test the OPN production. The protein concentrations of interleukin (IL)-5 and IL-13 were examined using ELISA. Purified eosinophils and ILC2s were cocultured and stimulated by OPN and the activation of eosinophils was detected by ELISA. Results After OPN stimulation, the ILC2s proliferation, the mRNA levels of GATA3 and RORα, the protein of GATA3, RORα, IL-5 and IL-13 expression were up-regulated significantly in a dose dependent manner. Eosinophils cultured alone transfected with miR-181a mimics produced less OPN protein compared with eosinophils transfected with miR-control, whereas OPN production was significantly promoted when miR-181a inhibitor was transfected. In the eosinophils and ILC2s coculture system, eosinophil cationic protein (ECP) production induced by OPN or IL-33 were significantly higher than ECP production in eosinophils culture system. OPN presented similar potency with IL-33 in the activation of eosinophils. When anti-IL-5 antibody was added, the production of ECP was significantly inhibited. Conclusions Our data for the first time provided new evidence that OPN played important roles in innate immunity of AR by regulation of ILC2s and the interaction between ILC2s and eosinophils.
Collapse
Affiliation(s)
| | | | | | - Wenlong Liu
- Corresponding author. Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9, Jinsui Road, Guangzhou, 510623, China
| | - Lifeng Zhou
- Corresponding author. Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9, Jinsui Road, Guangzhou, 510623, China
| |
Collapse
|
4
|
Noro Y, Miyata H, Furuta T, Sugita Y, Suzuki Y, Kusumi M, Tanabe M, Shomori K. Tumefactive eosinophil-rich non-granulomatous small vessel vasculitis in the cerebrum in a patient with idiopathic hypereosinophilic syndrome. Neuropathology 2022; 42:239-244. [PMID: 35411628 PMCID: PMC9541515 DOI: 10.1111/neup.12810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/16/2022] [Accepted: 02/27/2022] [Indexed: 11/26/2022]
Abstract
The definite diagnosis of central nervous system vasculitis requires pathological verification by biopsy or surgical resection of the lesion, which may not always be feasible. A 74-year-old woman with a history of allergic rhinitis, but not asthma, presented with slowly progressive left hemiparesis. Magnetic resonance imaging of the head revealed a heterogeneously enhancing mass involving the right internal capsule and corona radiata. Histological examination of the resected specimen revealed eosinophil-rich non-granulomatous small vessel vasculitis with no neutrophil infiltration or foci of microbial infection. Epstein-Barr virus in situ hybridization was negative, and polymerase chain reaction tests for both T-cell receptor gamma and immunoglobulin heavy-chain variable region genes did not show rearrangements, excluding the possibility of lymphoma and lymphoproliferative disorders. Blood hypereosinophilia and elevated erythrocyte sedimentation rate were observed; however, anti-neutrophil cytoplasmic antibodies were not detected. A biopsy of the erythema in the hips and thighs revealed perivasculitis with eosinophilic infiltration within the dermis. Chest computed tomography revealed multiple small nodules in the lungs. Her symptoms, aside from hemiparesis, disappeared after corticosteroid administration. The clinicopathological features were similar to eosinophilic granulomatosis with polyangiitis but did not meet its current classification criteria and definition. This patient is the first reported case of idiopathic eosinophilic vasculitis or idiopathic hypereosinophilic syndrome-associated vasculitis affecting the small vessels in the brain. Further clinicopathological studies enrolling similar cases are necessary to establish the disease concept and unravel the underlying pathogenesis.
Collapse
Affiliation(s)
- Yoshifumi Noro
- Department of Neuropathology, Research Institute for Brain and Blood Vessels, Akita Cerebrospinal and Cardiovascular Center, Akita, Japan.,Akita University School of Medicine, Akita, Japan
| | - Hajime Miyata
- Department of Neuropathology, Research Institute for Brain and Blood Vessels, Akita Cerebrospinal and Cardiovascular Center, Akita, Japan
| | - Takuya Furuta
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Yasuo Sugita
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan.,Department of Neuropathology, St. Mary's Hospital, Kurume, Japan
| | - Yuki Suzuki
- Department of Neurology, San-in Rosai Hospital, Yonago, Japan
| | | | - Michiharu Tanabe
- Department of Neurosurgery, San-in Rosai Hospital, Yonago, Japan
| | - Kohei Shomori
- Department of Pathology, San-in Rosai Hospital, Yonago, Japan
| |
Collapse
|
5
|
Hansakon A, Png CW, Zhang Y, Angkasekwinai P. Macrophage-Derived Osteopontin Influences the Amplification of Cryptococcus neoformans-Promoting Type 2 Immune Response. THE JOURNAL OF IMMUNOLOGY 2021; 207:2107-2117. [PMID: 34526375 DOI: 10.4049/jimmunol.2100202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 08/10/2021] [Indexed: 11/19/2022]
Abstract
A multifunctional glycoprotein, osteopontin (OPN), can modulate the function of macrophages, resulting in either protective or deleterious effects in various inflammatory diseases and infection in the lungs. Although macrophages play the critical roles in mediating host defenses against cryptococcosis or cryptococcal pathogenesis, the involvement of macrophage-derived OPN in pulmonary infection caused by fungus Cryptococcus has not been elucidated. Thus, our current study aimed to investigate the contribution of OPN to the regulation of host immune response and macrophage function using a mouse model of pulmonary cryptococcosis. We found that OPN was predominantly expressed in alveolar macrophages during C. neoformans infection. Systemic treatment of OPN during C. neoformans infection resulted in an enhanced pulmonary fungal load and an early onset of type 2 inflammation within the lung, as indicated by the increase of pulmonary eosinophil infiltration, type 2 cytokine production, and M2-associated gene expression. Moreover, CRISPR/Cas9-mediated OPN knockout murine macrophages had enhanced ability to clear the intracellular fungus and altered macrophage phenotype from pathogenic M2 to protective M1. Altogether, our data suggested that macrophage-derived OPN contributes to the elaboration of C. neoformans-induced type 2 immune responses and polarization of M2s that promote fungal survival and proliferation within macrophages.
Collapse
Affiliation(s)
- Adithap Hansakon
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand.,Graduate Program in Biomedical Science, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand
| | - Chin Wen Png
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, Singapore, Singapore.,Immunology Programme, Life Science Institute, National University of Singapore, Singapore, Singapore; and
| | - Yongliang Zhang
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, Singapore, Singapore.,Immunology Programme, Life Science Institute, National University of Singapore, Singapore, Singapore; and
| | - Pornpimon Angkasekwinai
- Department of Medical Technology, Faculty of Allied Health Sciences, Thammasat University, Pathumthani, Thailand; .,Research Unit in Molecular Pathogenesis and Immunology of Infectious Diseases, Thammasat University, Pathumthani, Thailand
| |
Collapse
|
6
|
The Role of Th17 Cells and IL-17 in Th2 Immune Responses of Allergic Conjunctivitis. J Ophthalmol 2020; 2020:6917185. [PMID: 32566265 PMCID: PMC7267877 DOI: 10.1155/2020/6917185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/12/2020] [Indexed: 11/24/2022] Open
Abstract
Allergic conjunctivitis (AC) is a common allergic disease that is often associated with the onset of rhinitis or asthma. The incidence of AC has increased significantly in recent years possibly due to air pollution and climate warming. AC seriously affects patients' quality of life and work efficiency. Th (T-helper) 2 immune responses and type I hypersensitivity reactions are generally considered the basis of occurrence of AC. It has been found that new subpopulations of T-helper cells, Th17 cells that produce interleukin-17 (IL-17), play an important role in the Th2-mediated pathogenesis of conjunctivitis. Studies have shown that Th17 cells are involved in a variety of immune inflammation, including psoriasis, rheumatoid arthritis, inflammatory bowel disease, systemic lupus erythematosus, and asthma. However, the role of Th17 and IL-17 in AC is unclear. This paper will focus on how T-helper 17 cells and interleukin-17 are activated in the Th2 immune response of allergic conjunctivitis and how they promote the Th2 immune response of AC.
Collapse
|
7
|
Topsakal M, Kaçar N, Demirkan N, Aybek H, Tosun Yıldırım H, İmren IG, Özden MG. Osteopontin in chronic urticaria: Elevated plasma levels and significantly increased osteopontin expression in patients' skin samples compared to controls. Dermatol Ther 2020; 33:e13328. [PMID: 32220120 DOI: 10.1111/dth.13328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/16/2020] [Accepted: 03/22/2020] [Indexed: 12/01/2022]
Affiliation(s)
- Mustafa Topsakal
- Department of Dermatology, Denizli State Hospital, Denizli, Turkey
| | - Nida Kaçar
- Department of Dermatology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Neşe Demirkan
- Department of Pathology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Hülya Aybek
- Department of Biochemistry, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Hülya Tosun Yıldırım
- Department of Pathology, Antalya Research and Training Hospital, Antalya, Turkey
| | - Işıl G İmren
- Department of Dermatology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Müge G Özden
- Department of Dermatology, Faculty of Medicine, Ondokuz Mayıs University, Samsun, Turkey
| |
Collapse
|
8
|
Giraldo-Cadavid LF, Perdomo-Sanchez K, Córdoba-Gravini JL, Escamilla MI, Suarez M, Gelvez N, Gozal D, Duenas-Meza E. Allergic Rhinitis and OSA in Children Residing at a High Altitude. Chest 2019; 157:384-393. [PMID: 31589842 DOI: 10.1016/j.chest.2019.09.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 09/06/2019] [Accepted: 09/09/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND OSA affects 2% to 4 % of the pediatric population; allergic rhinitis (AR) has been identified as a risk factor in sleep-disordered breathing, but no studies evaluating such an association have been conducted in high-altitude environments. The goal of this study was to assess whether the severity of AR is associated with the severity of OSA in children undergoing polysomnography (PSG) in the high-altitude city of Bogotá, Colombia. METHODS A cross-sectional observational study of children with AR was conducted. Severity of AR was evaluated by using the AR health-related quality of life questionnaire for children (ESPRINT-15) and the Allergic Rhinitis and its Impact on Asthma (ARIA) classification. Diagnosis and severity of OSA were established by using PSG. Potential associations between AR severity and OSA severity were assessed by using binary logistic regression and the Spearman correlation coefficient (ρ). RESULTS A total of 99 children (mean age, 7.9 years; 45% female) were included; 53% had OSA. An ESPRINT-15 score was associated with severe OSA (OR, 2.0; 95% CI, 1.12-6.04; P = .01). Patients with moderate/severe persistent rhinitis according to ARIA exhibited a 10.1-fold greater risk of severe OSA (OR, 10.15; 95% CI, 1.15-89.0). Furthermore, the apnea-hypopnea index was associated with the ESPRINT-15 score (ρ = 0.215; P = .03) and with the ARIA severity scale (P = .04; ρ = 0.203). CONCLUSIONS In symptomatic children with AR residing at a high altitude, increasing AR severity is associated with more severe OSA.
Collapse
Affiliation(s)
- Luis Fernando Giraldo-Cadavid
- Interventional Pulmonology, Fundacion Neumologica Colombiana, Epidemiology and Biostatistics Department, University of La Sabana, School of Medicine, Chía, Colombia
| | - Karen Perdomo-Sanchez
- Pediatrics, University of La Sabana, School of Medicine, Fundacion Neumologica Colombiana, Bogotá, Colombia
| | - Jorge Luis Córdoba-Gravini
- Pediatrics, University of La Sabana, School of Medicine, Fundacion Neumologica Colombiana, Bogotá, Colombia
| | - Maria Isabel Escamilla
- Pediatrics, University of La Sabana, School of Medicine, Fundacion Neumologica Colombiana, Bogotá, Colombia
| | - Miguel Suarez
- Pediatrics, University of La Sabana, School of Medicine, Fundacion Neumologica Colombiana, Bogotá, Colombia
| | - Natalia Gelvez
- Otorhinolaryngology and Sleep Medicine, Fundacion Neumologica Colombiana, Bogotá, Colombia
| | - David Gozal
- Division of Pediatric Pulmonology and Child Health Research Institute, Department of Child Health, University of Missouri School of Medicine, and Women's and Children's Hospital, University of Missouri Health System, Columbia, MO
| | - Elida Duenas-Meza
- Pediatrics, Pulmonary Medicine and Sleep Medicine, Fundacion Neumologica Colombiana, Bogotá, Colombia.
| |
Collapse
|
9
|
Liu W, Ouyang H, Zeng Q, Luo R, Lu G. Decreased Treg-derived miR-181a and miR-155 correlated with reduced number and function of Treg cells in allergic rhinitis children. Eur Arch Otorhinolaryngol 2019; 276:1089-1094. [PMID: 30673848 DOI: 10.1007/s00405-019-05304-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 01/18/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Regulatory cells (Tregs) have been proved to be deeply involved in allergic airway inflammation. This study aims to evaluate the expression of miRNA in children with AR and their association with Tregs as well as the severity of AR. METHODS Twenty-five AR children and 20 healthy children were enrolled in this study. The Treg-cell percentage and expression of IL-10 and TGF-β were detected by flow cytometry and enzyme-linked immunosorbent assay. The microRNA microarray analysis in purified Tregs was performed and differentially expressed microRNAs were confirmed by quantitative polymerase chain reaction (qPCR). RESULTS Children with AR had lower percentage of Tregs and expression of IL-10 and TGF-beta compared with control children. We found that significantly lower levels of miR-155 and miR-181a in Tregs from AR than healthy controls. Furthermore, intracellular miR-155 and miR-181a level were positively correlated with percentage of Tregs and expression of IL-10 and TGF-beta. Similarly, total nasal severity scores (TNSS) were found to be negatively correlated with miR-155 and miR-181a levels. CONCLUSION Decreased Treg-derived miR-181a and miR-155 were correlated with reduced number and function of Tregs in AR children. The intracellular miR-155 and miR-181a levels may serve as predictors of disease severity in childhood AR.
Collapse
Affiliation(s)
- Wenlong Liu
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9, Jinsui Road, Guangzhou, 510623, China.
| | - Hong Ouyang
- Department of Otolaryngology, Renhe Hospital, Three Gorges University, Yi Chang, China
| | - Qingxiang Zeng
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9, Jinsui Road, Guangzhou, 510623, China
| | - Renzhong Luo
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9, Jinsui Road, Guangzhou, 510623, China
| | - Gen Lu
- Department of Respiratory Medicine, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, No. 9, Jinsui Road, Guangzhou, 510623, China.
| |
Collapse
|
10
|
Role of Leptin/Osteopontin Axis in the Function of Eosinophils in Allergic Rhinitis with Obesity. Mediators Inflamm 2018; 2018:9138904. [PMID: 30473626 PMCID: PMC6220382 DOI: 10.1155/2018/9138904] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 08/05/2018] [Accepted: 09/26/2018] [Indexed: 12/28/2022] Open
Abstract
Background Allergic rhinitis (AR) is characterized by tissue and blood eosinophilia. Previous studies showed enhanced eosinophilia in allergic rhinitis patients with obesity, suggesting an association between obesity and eosinophilia. However, the interaction and mechanism between obesity and eosinophilia is still unclear. Methods We recruited thirty AR children and 30 controls in this study. Expression of leptin and osteopontin (OPN) proteins in serum was detected, and correlation analysis with eosinophilia was performed. The effect of leptin or OPN on eosinophil apoptosis, adhesion, migration, and activation of eosinophil was examined. Ovalbumin-sensitized mice were established to prove the role of obesity on eosinophil regulation by leptin and OPN. Results We found that upregulated serum and nasal leptin and OPN expression in AR were positively correlated with eosinophilia and eosinophil cationic protein levels. Leptin or OPN inhibited eosinophil apoptosis, demonstrated as inhibited DNA fragmentation and phosphatidylserine (PS) redistribution (P < 0.05). Leptin and OPN promote expression of cluster of differentiation 18 (CD-18) and intercellular adhesion molecule 1 (ICAM-1) and inhibit expression of ICAM-1 and L-selectin by eosinophils, which contribute to the adhesion of eosinophils. Leptin and OPN mediated migration and activation of eosinophil through phosphatidylinositol-3-OH kinase (PI3K) pathway. Obese AR mice presented with more severe eosinophilia and symptoms compared with nonobese AR mice or control mice. Immunochemistry staining of leptin and OPN of nasal turbinate in obese AR mice was also stronger than those in nonobese AR mice or control mice. Anti-OPN, anti-leptin, and anti-α4 treatments reduce nasal eosinophilia inflammation and clinical symptoms in model mice. Conclusion Our results suggested that in an obese state, upregulation of leptin and OPN regulates apoptosis, adhesion, migration, and activation of eosinophils, and this process may be mediated by the PI3K and anti-α4 pathways.
Collapse
|
11
|
Liu W, Zeng Q, Zhou L, Li Y, Chen Y, Luo R. Leptin/osteopontin axis contributes to enhanced T helper 17 type responses in allergic rhinitis. Pediatr Allergy Immunol 2018; 29:622-629. [PMID: 29806975 DOI: 10.1111/pai.12926] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/12/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND Recent studies suggest that T helper 17 (Th17) cell subset, a distinct pro-inflammatory CD4 + T cell lineage, may play an important role in the pathophysiology of allergic rhinitis (AR). However, the regulation of Th17 response in allergic disease is not well characterized. METHODS Thirty AR and 30 healthy children were enrolled. Serum leptin and OPN levels were measured, and their correlation with IL-17 expression was analyzed using enzyme-linked immunosorbent assay (ELISA). Th17 cell differentiation and cytokine production in peripheral blood mononuclear cell (PBMCs) stimulated by leptin and OPN and related inhibitors were analyzed by ELISA. AR mice models were also established to verify the effect of leptin and OPN on Th17 cell regulation. Immunoprecipitation was performed to explore the interaction between OPN and leptin in Th17 cells. RESULTS Our results showed that elevated serum leptin and OPN in AR children were correlated with serum IL-17 level (r = .53, P < .01). The recombinant leptin and OPN enhanced Th17 responses from PBMCs synergistically through nuclear factor κB (NF-κB), mitogen-activated protein kinase (MAPK), and c-Jun N-terminal kinase (JNK) pathway and β3 integrin receptor. The AR mice showed as more severe Th17 responses and symptoms compared with control mice. Immunoprecipitation showed that OPN and leptin may interact with each other directly, and this process may be mediated by β3 integrin. CONCLUSIONS Our data provide evidence that upregulation of leptin and OPN promotes Th17 responses in AR, and this process may be achieved through NF-κB, MAPK, and JNK pathway and β3 integrin.
Collapse
Affiliation(s)
- Wenlong Liu
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Qingxiang Zeng
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Lifeng Zhou
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yan Li
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yanqiu Chen
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - RenZhong Luo
- Department of Otolaryngology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| |
Collapse
|
12
|
Leptin/Osteopontin Axis Regulated Type 2T Helper Cell Response in Allergic Rhinitis with Obesity. EBioMedicine 2018; 32:43-49. [PMID: 29885866 PMCID: PMC6020855 DOI: 10.1016/j.ebiom.2018.05.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/30/2018] [Accepted: 05/30/2018] [Indexed: 12/25/2022] Open
Abstract
The prevalence of allergic rhinitis (AR) and obesity in children increased concurrently during recent decades. However, the molecular pathway involved in the interaction between obesity and AR is still unclear. We aimed to investigate the interaction between leptin and osteopontin (OPN) and their effect on T helper (TH) response in the development of AR in children. Thirty AR and 30 healthy children with or without obesity were enrolled. Serum leptin and OPN levels were measured and their relationship with TH1/2 cytokines was analyzed. TH cell differentiation and cytokine production in peripheral blood mononuclear cells (PBMCs) stimulated by leptin and/or OPN were analyzed by enzyme linked immunosorbent assay (ELISA). Obese AR mice models were established to verify the effect of obesity on leptin and OPN as well TH regulation. Immunoprecipitation was performed to confirm the interaction between OPN and leptin in CD4+ T cells. Our results showed elevated serum leptin and OPN in AR children correlated with TH2 cytokines expression. Leptin and OPN enhanced TH2 inflammation in house dust mite stimulated PBMCs from AR children synergistically. Obese AR mice showed as more severe inflammatory reaction, symptoms and expression of nasal leptin and OPN compared with other groups. Immunoprecipitation suggested that OPN and leptin may interact with each other and this process may be mediated by α4 integrin and PI3K/AKT pathway in CD4+ T cells. Our data provide evidence that leptin-mediated OPN upregulation promote TH2 inflammation in AR and this process is achieved through the α4 integrin and PI3K/AKT signaling pathways. Previous studies suggested that both leptin and osteopontin are increased in allergic rhinitis patients and related to the severity of disease. We also provide evidence that leptin and osteopontin contributes to TH2-skewed airway diseases. In the present study, our data suggested that obesity and allergic rhinitis interacted closely through leptin and OPN, and these cytokines may be used as potential biomarkers for disease severity of allergic rhinitis despite that more studies were needed.
Collapse
|
13
|
Sampayo-Escobar V, Green R, Cheung MB, Bedi R, Mohapatra S, Mohapatra SS. Osteopontin plays a pivotal role in increasing severity of respiratory syncytial virus infection. PLoS One 2018; 13:e0192709. [PMID: 29677209 PMCID: PMC5909912 DOI: 10.1371/journal.pone.0192709] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 01/29/2018] [Indexed: 12/27/2022] Open
Abstract
The molecular mechanisms underlying susceptibility to severe respiratory syncytial virus (RSV) infection remain poorly understood. Herein, we report on the role of osteopontin (OPN) in regulation of RSV infection in human epithelial cells and how interleukin-1 beta (IL-1β), a cytokine secreted soon after RSV infection, when persistently expressed can induce OPN expression leading to increased viral infection. We first compared OPN expression in two human epithelial cell lines: HEK-293 and HEp-2. In contrast to HEp-2, HEK-293 expresses low levels of pro-caspase-1 resulting in decreased IL-1β expression in response to RSV infection. We found a correlation between low IL-1β levels and a delay in induction of OPN expression in RSV-infected HEK-293 cells compared to HEp-2. This phenomenon could partially explain the high susceptibility of HEp-2 cells to RSV infection versus the moderate susceptibility of HEK-293 cells. Also, HEK-293 cells expressing low levels of pro-caspase-1 exhibit decreased IL-1β expression and delayed OPN expression in response to RSV infection. HEK-293 cells incubated with human rIL-1β showed a dose-dependent increase in OPN expression upon RSV infection. Also, incubation with rOPN increased RSV viral load. Moreover, HEp-2 cells or mice infected with a mucogenic RSV strain RSV-L19F showed elevated levels of OPN in contrast to mice infected with the laboratory RSV strain rA2. This correlated with elevated levels of OPN following infection with RSV-L19F compared to rA2. Together, these results demonstrate that increased OPN expression is regulated in part by IL-1β, and the interplay between IL-1β and OPN signaling may play a pivotal role in the spread of RSV infection.
Collapse
Affiliation(s)
- Viviana Sampayo-Escobar
- James A Haley Veterans Affairs Hospital, Tampa, Florida, United States of America
- Department of Internal Medicine, Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida, United States of America
| | - Ryan Green
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida, United States of America
| | - Michael B. Cheung
- James A Haley Veterans Affairs Hospital, Tampa, Florida, United States of America
- Department of Internal Medicine, Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida, United States of America
| | - Raminder Bedi
- James A Haley Veterans Affairs Hospital, Tampa, Florida, United States of America
- Department of Internal Medicine, Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida, United States of America
| | - Subhra Mohapatra
- James A Haley Veterans Affairs Hospital, Tampa, Florida, United States of America
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida, United States of America
- * E-mail: (SM); (SSM)
| | - Shyam S. Mohapatra
- James A Haley Veterans Affairs Hospital, Tampa, Florida, United States of America
- Department of Internal Medicine, Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, Florida, United States of America
- * E-mail: (SM); (SSM)
| |
Collapse
|
14
|
Tear osteopontin level and its relationship with local Th1/Th2/Th17/Treg cytokines in children with allergic conjunctivitis. Allergol Immunopathol (Madr) 2018; 46:144-148. [PMID: 29279263 DOI: 10.1016/j.aller.2017.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/11/2017] [Accepted: 05/19/2017] [Indexed: 11/23/2022]
Abstract
BACKGROUND Allergic conjunctivitis (AC) is one of the most common allergic ocular diseases worldwide. Osteopontin (OPN), as a recently described Th2 inflammation related protein, may play a role in the pathogenesis of AC. The aim of this study was to identify the expression of OPN in children with AC. METHODS Eighty AC children (seasonal and perennial AC) and twenty controls were enrolled in this study. Serum and tears of different time points (during and out of the pollen season) were collected and used for enzyme-linked immunosorbent assay (ELISA) of OPN and T-help cell related cytokines, respectively. The relationship between serum and tears OPN and Th1/2/17Treg related cytokines as well as disease severity were analysed. RESULTS Our results showed that expression of tear OPN protein by perennial AC patients increased significantly compared with controls or seasonal AC patients out of the pollen season. Tear OPN expression was positively related to local Th2/17 cytokines and negatively related to IL-10 and TGF-β expression. The tear OPN expression was also significantly related to disease severity. CONCLUSION Tear OPN reflects the local clinical status of ocular allergy and might play an important pathophysiological role in local Th2/17/Treg inflammation in children with AC.
Collapse
|
15
|
Abstract
BACKGROUND It is thought that airway inflammation is more common in obese asthmatic patients because inflammation is harder to control and does not respond well to glucocorticoid treatment. OBJECTIVE This study's aim was to investigate the effect of obesity on airway and systemic inflammation in children with asthma and to identify the biomarkers that play a role in this inflammation. METHODS The study included patients aged 6-16 years who were diagnosed with asthma in the paediatric allergy outpatient clinic of Bagcilar Training and Research Hospital in Turkey. Complete blood count parameters were compared between three groups: obese asthmatic (n=43), obese non-asthmatic (n=45), and non-obese non-asthmatic (control group, n=30). Levels of high-sensitive CRP (hs-CRP), neutrophil gelatinase-associated lipocalin (NGAL), osteopontin (OPN), and matrix metalloproteinase-9 (MMP-9), and 25(OH)-vitamin D were compared between the groups. RESULTS No statistically significant differences were observed in 25(OH)-vitamin D, NGAL, OPN, hs-CRP, and MMP-9 levels between groups. There was a statistically significant negative correlation between FEV1/FVC and NGAL and MMP-9. CONCLUSION This is the first study to investigate levels of hs-CRP, NGAL, OPN, MMP-9, and 25(OH)-vitamin D in obese asthmatic children. Larger studies with sputum and BAL examinations are required to determine the potential of biomarkers for identifying inflammation in obese asthmatic children.
Collapse
|
16
|
Circulating Clusterin and Osteopontin Levels in Asthma and Asthmatic Pregnancy. Can Respir J 2017; 2017:1602039. [PMID: 29200898 PMCID: PMC5672608 DOI: 10.1155/2017/1602039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 08/17/2017] [Accepted: 09/20/2017] [Indexed: 12/18/2022] Open
Abstract
Asthma in pregnancy poses a risk of adverse outcomes. Osteopontin and clusterin emerged as asthma biomarkers; however, their circulating levels during pregnancy are unknown yet. This cross-sectional study investigated peripheral osteopontin and clusterin levels and their relationship to disease control in 26 asthmatic pregnant (AP), 22 asthmatic nonpregnant (ANP), and 25 healthy pregnant (HP) women and 12 healthy controls (HNP). Osteopontin levels of ANP and HNP were similar (2.142 [1.483-2.701] versus 2.075 [1.680-2.331] ng/mL, p = 0.7331). Pregnancy caused a marked elevation in both healthy (HP: 3.037 [2.439-4.015] ng/ml, p = 0.003 versus HNP) and asthmatic (AP: 2.693 [1.581-3.620] ng/ml) patients; thus the pregnant groups did not differ (p = 0.3541). Circulating clusterin levels were comparable in ANP and HNP (109.2 [95.59-116.3] versus 108.8 [97.94-115.3] µg/mL, p = 0.8730) and the level was lower in HP (98.80 [84.26-105.5] µg/mL, p = 0.0344 versus HNP). In contrast, the level was higher in AP (111.7 [98.84-125.6] µg/mL, p = 0.0091 versus HP). In ANP, a positive correlation of PEF (r = 0.3405; p = 0.0221) and a negative correlation of Raw (r = -0.3723; p = 0.0128) to clusterin level were detected. Circulating osteopontin level increases in pregnancy regardless of concomitant well-controlled asthma, indicating its gestational role. Clusterin level decreases in healthy but not in asthmatic pregnancy and correlates directly with lung function.
Collapse
|
17
|
Yenigun A, Sezen S, Calim OF, Ozturan O. Evaluation of the eosinophil-to-lymphocyte ratio in pediatric patients with allergic rhinitis. Am J Rhinol Allergy 2016; 30:e21-5. [PMID: 26980381 DOI: 10.2500/ajra.2016.30.4296] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Allergic rhinitis is a type 1 hypersensitivity reaction of the nasal mucosa, the primary mediator of which is immunoglobulin E. Allergic rhinitis occurs in children and adolescents. OBJECTIVE This study examined the relationship between allergies and the eosinophil-to-lymphocyte ratio in children with allergic rhinitis with a positive skin-prick test. STUDY DESIGN This study was planned and performed as a case-control study. METHODS There were 695 patients who presented to our clinic who were enrolled in the study. Only group 4 fit the criteria for allergic rhinitis. Group 1 (nonsensitized asymptomatic [control group]), group 2 (nonsensitized symptomatic), group 3 (sensitized asymptomatic), and group 4 (sensitized symptomatic). The patients' allergy symptoms and skin test results were assessed and compared. The eosinophil-to-lymphocyte ratio for each patient was calculated. The eosinophil and lymphocyte counts and the eosinophil-to-lymphocyte ratio were calculated for each group. RESULTS The eosinophil-to-lymphocyte ratio and eosinophil counts in groups 3 and 4 were significantly higher (p < 0.001 and p < 0.001, respectively) than those in groups 1 and 2. The lymphocyte counts in groups 3 and 4 were significantly lower (p = 0.046) than those of groups 1 and 2. CONCLUSIONS The eosinophil-to-lymphocyte ratio may be used in conjunction with skin-prick testing in pediatric patients with allergic rhinitis. This parameter is inexpensive to measure and easy to use and calculate.
Collapse
Affiliation(s)
- Alper Yenigun
- Department of Otorhinolaryngology, Faculty of Medicine, Bezmialem Vakif University, Fatih, Istanbul, Turkey
| | | | | | | |
Collapse
|
18
|
Correlation between Serum Osteopontin and miR-181a Levels in Allergic Rhinitis Children. Mediators Inflamm 2016; 2016:9471215. [PMID: 27199509 PMCID: PMC4856918 DOI: 10.1155/2016/9471215] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 03/18/2016] [Accepted: 04/04/2016] [Indexed: 12/14/2022] Open
Abstract
Background. Osteopontin (OPN) has been proved to be associated with allergic airway inflammation. However, the roles of OPN and its regulation in childhood allergic rhinitis (AR) are poorly understood. Objective. This study aims to evaluate the expression of OPN and miR-181a in children with AR and their association with Th1/Th2 immune response. Methods. Children who suffered from AR were included along with control subjects. Serum was collected to examine the level of OPN and Th1/Th2 cytokines by enzyme-linked immunosorbent assay (ELISA) and the level of miR-181a by quantitative polymerase chain reaction (qPCR). Results. Children with AR had significantly higher serum levels of OPN and lower serum levels of miR-181a than healthy controls. Furthermore, serum levels of OPN were positively correlated with Th2 cytokine and negatively correlated with Th1 cytokine. On the contrary, miR-181a level had a negative correlation with IL-4/IL-5 and positive correlation with IFN-γ/IL-12. More importantly, there was also significant negative correlation between OPN and miR-181a. Conclusion. The OPN protein and miR-181a levels may serve as predictors of disease severity in childhood AR and appear to be promising targets for modulating AR.
Collapse
|
19
|
Wang C, Wang K, Liu S, Qin X, Chen K, Zhang T. Decreased level of osteopontin in children with allergic rhinitis during sublingual immunotherapy. Int J Pediatr Otorhinolaryngol 2016; 81:15-20. [PMID: 26810282 DOI: 10.1016/j.ijporl.2015.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 11/30/2015] [Accepted: 12/03/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Sublingual immunotherapy (SLIT) is proven to be very effective in the treatment of allergic rhinitis (AR), but its regulatory mechanism and biomarkers for predicting efficacy are still unknown. Osteopontin (OPN), as a recently described Th2 inflammation related protein, plays key role in the pathogenesis of AR. The aim of this study was to identify the expression and role of OPN during SLIT in children. METHODS Fifty house dust mite (HDM)-sensitized children with AR were enrolled in this study. AR children received HDM allergen extract or placebo for SLIT. Serum of different time points during treatment was collected and used for enzyme-linked immuno sorbent assay (ELISA) of OPN and related cytokines, respectively. Peripheral blood mononuclear cells from children after SLIT or placebo treatment were collected and stimulated with HDM with or without OPN/anti-OPN after one year's treatment. RESULTS Our results showed that expression of OPN protein was decreased after one year's therapy. The decreased OPN expression was positively related to decreased Th2 cytokines and negatively related to enhanced IL-10 and TGF-β expression. In vitro experiments confirmed that children received SLIT treatment showed decreased production of Th2 cytokines by PBMCs after HDM stimulation. CONCLUSION During SLIT, decreased OPN expression was related to low Th2 cytokine expression and enhanced IL-10 and TGF-β expression. High serum OPN expression predicts poor treatment efficacy. OPN may be used as a biomarker for SLIT treatment.
Collapse
Affiliation(s)
- Chunrui Wang
- Department of Otolaryngology, First Affiliated Hospital to Harbin Medical University, Harbin, China
| | - Kai Wang
- Department of Otolaryngology, Ningbo Medical Treatment Center Lihuili Hospital, Ningbo, China
| | - Shaoting Liu
- Department of Otolaryngology, First Affiliated Hospital to Harbin Medical University, Harbin, China
| | - Xiaowei Qin
- Department of Otolaryngology, First Affiliated Hospital to Harbin Medical University, Harbin, China
| | - Kewa Chen
- Department of Otolaryngology, First Affiliated Hospital to Harbin Medical University, Harbin, China
| | - Tianhong Zhang
- Department of Otolaryngology, First Affiliated Hospital to Harbin Medical University, Harbin, China.
| |
Collapse
|
20
|
Scadding GW, Eifan A, Penagos M, Dumitru A, Switzer A, McMahon O, Phippard D, Togias A, Durham SR, Shamji MH. Local and systemic effects of cat allergen nasal provocation. Clin Exp Allergy 2015; 45:613-23. [PMID: 25303516 PMCID: PMC4778413 DOI: 10.1111/cea.12434] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/29/2014] [Accepted: 09/01/2014] [Indexed: 01/05/2023]
Abstract
Background Cat allergen is widely distributed in homes and schools; allergic sensitization is common. Objective To develop a model of cat allergen nasal challenge to establish dose–response and time–course characteristics and investigate local and systemic biomarkers of allergic inflammation. Methods Nineteen cat‐allergic individuals underwent titrated nasal challenge, range 0.243 to 14.6 μg/mL Fel d1, and matched diluent‐only provocation. Clinical response to 8 h was assessed by symptom scores and peak nasal inspiratory flow (PNIF). Nasal fluid was collected using polyurethane sponges and analysed by ImmunoCAP and multiplex assays. Whole blood flow cytometry for basophil surface CD63, CD107a, and CD203c was carried out at baseline and 6 h post‐challenge. Results A dose–response to allergen was seen in symptom scores and PNIF, maximal at 10 000 BU/mL (4.87 μg/mL Fel d1), P < 0.0001 vs. diluent. Nasal fluid tryptase was elevated at 5 min after challenge (P < 0.05 vs. diluent); eotaxin, IL‐4, ‐5, ‐9, and ‐13 were increased at 8 h (P < 0.05 to P < 0.0001 vs. diluent); TSLP was undetectable; IL‐10, IL‐17A, and IL‐33 were unchanged compared to diluent challenge. Nasal fluid IL‐5 and IL‐13 correlated inversely with PNIF after challenge (IL‐5, r = −0.79, P < 0.0001; IL‐13, r = −0.60, P = 0.006). Surface expression of CD63 and CD107a was greater at 6 h than at baseline, both in the presence (both P < 0.05) and absence (CD63, P < 0.01; CD107a, P < 0.05) of in vitro allergen stimulation; no changes were seen on diluent challenge day. Conclusions Cat allergen nasal challenge produces local and systemic Th2‐driven inflammatory responses and has potential as a surrogate outcome measure in clinical trials.
Collapse
Affiliation(s)
- G W Scadding
- Allergy and Clinical Immunology, Imperial College London, London, UK
| | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Akelma A, Cizmeci M, Kanburoglu M, Bozkaya D, Catal F, Mete E, Kutukoglu I, Namuslu M. Elevated level of serum osteopontin in school-age children with asthma. Allergol Immunopathol (Madr) 2014; 42:275-81. [PMID: 23578778 DOI: 10.1016/j.aller.2013.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/18/2012] [Accepted: 01/02/2013] [Indexed: 10/27/2022]
Abstract
BACKGROUND The role of osteopontin (OPN) has not been elucidated in childhood asthma. OBJECTIVE Our purpose was to investigate whether OPN levels change due to allergic inflammation in pre-school and school-age children. METHODS In this prospective, cross-sectional study, 42 healthy children and a total of 51 children with asthma were recruited. OPN levels and its association with clinical and laboratory parameters were investigated in the study population. The asthma group were divided into two groups with respect to age, ≤ 5-years (n = 23) and >5-years (n = 28), and labelled Asthma Group 1 and Asthma Group 2, respectively. OPN levels were compared between subgroups. RESULTS Serum OPN levels were significantly higher in the asthma group when compared to the control group (p = 0.004). OPN levels were similar in Asthma Group 1 and control groups, whereas it was found to be higher in Asthma Group 2 (p>0.025, p = 0.001, respectively). In the >5-years age asthmatic group, OPN levels of the patients with allergic rhinitis (n = 15) were higher than those of the patients (n=13) without allergic rhinitis (p = 0.021). CONCLUSION The study underscores the relationship between childhood asthma and OPN as the first study in the literature. In this study we found that OPN, which plays a role in Th2 mediated inflammation, may also play a role in childhood asthma. The fact that OPN levels do not increase in preschool-age children with asthma might be due to the transient wheezing in this group.
Collapse
|
22
|
Abstract
Allergic rhinitis, particularly seasonal allergic rhinitis, is considered a classic Th2-mediated disease, with important contributions to pathology by interleukins 4, 5 and 13. As such, allergic rhinitis is an excellent model for studying allergic inflammation, with findings potentially relevant to the mechanism of lower airways inflammation seen in allergic asthma. However, recent evidence has revealed roles for additional non-Th2 cytokines in asthma, including IL-17 family cytokines and epithelial-derived cytokines. Additionally, putative roles for epithelial-derived cytokines and innate lymphoid cells have been described in chronic rhinosinusitis with nasal polyps. Here, evidence for the involvement of different cytokines and cytokine groups in allergic rhinitis is considered.
Collapse
Affiliation(s)
- Guy Scadding
- Allergy and Clinical Immunology, Imperial College, London, South Kensington Campus, London, SW7 2AZ, UK,
| |
Collapse
|