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Lu HF, Zhou YC, Luo DD, Yang DH, Wang XJ, Cheng BH, Zeng XH. ILC2s: Unraveling the innate immune orchestrators in allergic inflammation. Int Immunopharmacol 2024; 131:111899. [PMID: 38513576 DOI: 10.1016/j.intimp.2024.111899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 03/05/2024] [Accepted: 03/17/2024] [Indexed: 03/23/2024]
Abstract
The prevalence rate of allergic diseases including asthma, atopic rhinitis (AR) and atopic dermatitis (AD) has been significantly increasing in recent decades due to environmental changes and social developments. With the study of innate lymphoid cells, the crucial role played by type 2 innate lymphoid cells (ILC2s) have been progressively unveiled in allergic diseases. ILC2s, which are a subset of innate lymphocytes initiate allergic responses. They respond swiftly during the onset of allergic reactions and produce type 2 cytokines, working in conjunction with T helper type 2 (Th2) cells to induce and sustain type 2 immune responses. The role of ILC2s represents an intriguing frontier in immunology; however, the intricate immune mechanisms of ILC2s in allergic responses remain relatively poorly understood. To gain a comphrehensive understanding of the research progress of ILC2, we summarize recent advances in ILC2s biology in pathologic allergic inflammation to inspire novel approaches for managing allergic diseases.
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Affiliation(s)
- Hui-Fei Lu
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China; Department of Otolaryngology, Shenzhen Key Laboratory of Otolaryngology, Shenzhen Institute of Otolaryngology, Shenzhen Longgang Otolaryngology Hospital, Shenzhen, 518172, China
| | - Yi-Chi Zhou
- Department of Gastroenterology, Beijing University of Chinese Medicine Shenzhen Hospital (Longgang), Shenzhen 518172, China
| | - Dan-Dan Luo
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China
| | - Dun-Hui Yang
- Department of Otolaryngology, Shenzhen Key Laboratory of Otolaryngology, Shenzhen Institute of Otolaryngology, Shenzhen Longgang Otolaryngology Hospital, Shenzhen, 518172, China
| | - Xi-Jia Wang
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China
| | - Bao-Hui Cheng
- Department of Otolaryngology, Shenzhen Key Laboratory of Otolaryngology, Shenzhen Institute of Otolaryngology, Shenzhen Longgang Otolaryngology Hospital, Shenzhen, 518172, China.
| | - Xian-Hai Zeng
- Department of Graduate and Scientific Research, Zhuhai Campus of Zunyi Medical University, Zhuhai 519041, China; Department of Otolaryngology, Shenzhen Key Laboratory of Otolaryngology, Shenzhen Institute of Otolaryngology, Shenzhen Longgang Otolaryngology Hospital, Shenzhen, 518172, China.
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Febuxostat Alleviates Allergic Rhinitis by Inhibiting Inflammation and Monocyte Adhesion in Human Nasal Epithelial Cells via Regulating KLF6. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:9092311. [PMID: 36118091 PMCID: PMC9477640 DOI: 10.1155/2022/9092311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/16/2022] [Indexed: 11/25/2022]
Abstract
Introduction Febuxostat is a novel inhibitor of xanthine oxidase that suppresses cell adhesion molecules-mediated (CAMs) inflammation by activating KLF6. In this study, we explored the therapeutic function and potential mechanisms of febuxostat against allergic rhinitis (AR). Methods We investigated the role of febuxostat through in vitro cell and in vivo animal experiments. Human nasal epithelial cells (hNECs) were cultured with histamine as an in vitro model. To establish the AR animal model, rats were exposed to ovalbumin. Rats were randomly grouped into control, model, 7.5 mg/kg febuxostat, and 15 mg/kg febuxostat groups. Results In the in vitro study, we found significantly increased release of lactate dehydrogenase, elevated production of inflammatory factors and chemokines, and upregulated CAMs in histamine-treated hNECs. However, these results were significantly reversed for the 10 and 20 μM febuxostat treatments. The enhanced adhesion between hNECs and monocytes induced by histamine was dramatically repressed by febuxostat. In the vivo experiments, we observed that febuxostat ameliorated the increased sneezing times, the number of nose scratching episodes, and elevated HE pathological scores as well as alleviated the inflammation in nasal mucous tissues of AR mice. We found that KLF6, which was downregulated in histamine-treated hNECs, was significantly upregulated by febuxostat. The inhibitory effects of febuxostat on the expression levels of CAMs and adhesion between histamine-treated hNECs and monocytes were significantly abolished by the knockdown of KLF6. Conclusion Febuxostat alleviates AR by inhibiting inflammation and monocyte adhesion in human nasal epithelial cells through the regulation of KLF6.
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Xie Y, Ju X, Beaudin S, Wiltshire L, Oliveria JP, MacLean J, Sommer DD, Cusack R, Li O, Banerjee P, Keith PK, O'Byrne PM, Bauer RN, Staton T, Gauvreau GM, Sehmi R. Effect of intranasal corticosteroid treatment on allergen-induced changes in group 2 innate lymphoid cells in allergic rhinitis with mild asthma. Allergy 2021; 76:2797-2808. [PMID: 33784411 DOI: 10.1111/all.14835] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 02/07/2021] [Accepted: 02/10/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Allergic rhinitis is characterized by rhinorrhea, nasal congestion, sneezing and nasal pruritus. Group 2 innate lymphoid cells (ILC2s), CD4+ T cells and eosinophils in nasal mucosa are increased significantly after nasal allergen challenge (NAC). Effects of intranasal corticosteroids (INCS) on ILC2s remain to be investigated. METHODS Subjects (n = 10) with allergic rhinitis and mild asthma were enrolled in a single-blind, placebo-controlled, sequential treatment study and treated twice daily with intranasal triamcinolone acetonide (220 µg) or placebo for 14 days, separated by a 7-day washout period. Following treatment, subjects underwent NAC and upper airway function was assessed. Cells from the nasal mucosa and blood, sampled 24 h post-NAC, underwent flow cytometric enumeration for ILC2s, CD4+ T and eosinophil progenitor (EoPs) levels. Cell differentials and cytokine levels were assessed in nasal lavage. RESULTS Treatment with INCS significantly attenuated ILC2s, IL-5+ /IL-13+ ILC2s, HLA-DR+ ILC2s and CD4+ T cells in the nasal mucosa, 24 h post-NAC. EoP in nasal mucosa was significantly increased, while mature eosinophils were significantly decreased, 24 h post-NAC in INCS versus placebo treatment arm. Following INCS treatment, IL-2, IL-4, IL-5 and IL-13 were significantly attenuated 24 h post-NAC accompanied by significant improvement in upper airway function. CONCLUSION Pre-treatment with INCS attenuates allergen-induced increases in ILC2s, CD4+ T cells and terminal differentiation of EoPs in the nasal mucosa of allergic rhinitis patients with mild asthma, with little systemic effect. Attenuation of HLA-DR expression by ILC2s may be an additional mechanism by which steroids modulate adaptive immune responses in the upper airways.
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Affiliation(s)
- Yanqing Xie
- Department of Medicine McMaster University Hamilton ON Canada
- State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory Disease Guangzhou Institute of Respiratory Health the First Affiliated Hospital of Guangzhou Medical University Guangzhou Guangdong China
| | - Xiaotian Ju
- Department of Medicine McMaster University Hamilton ON Canada
| | - Suzanne Beaudin
- Department of Medicine McMaster University Hamilton ON Canada
| | | | - John Paul Oliveria
- Department of Medicine McMaster University Hamilton ON Canada
- Department of Pathology Stanford University Palo Alto CA USA
| | - Jonathan MacLean
- Department of Surgery Otolaryngology, Head & Neck Surgery Division McMaster University Hamilton ON Canada
| | - Doron D. Sommer
- Department of Surgery Otolaryngology, Head & Neck Surgery Division McMaster University Hamilton ON Canada
| | - Ruth Cusack
- Department of Medicine McMaster University Hamilton ON Canada
| | - Olga Li
- Genentech Inc South San Francisco CA USA
| | | | - Paul K. Keith
- Department of Medicine McMaster University Hamilton ON Canada
| | - Paul M. O'Byrne
- Department of Medicine McMaster University Hamilton ON Canada
| | | | | | | | - Roma Sehmi
- Department of Medicine McMaster University Hamilton ON Canada
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Cakir Cetin A, Ecevit MC, Gumustekin M, Pekcetin C, Ozbal S, Efe H, Koca P, Akcay O, Tuncok Y. Therapeutic effects of melatonin on an ovalbumin-induced allergic rhinitis model in rats. Auris Nasus Larynx 2021; 48:1109-1119. [PMID: 33965284 DOI: 10.1016/j.anl.2021.04.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 04/08/2021] [Accepted: 04/16/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE We aimed to investigate the therapeutic effects of melatonin in an experimental AR model. METHODS Thirty-two Wistar rats were randomised into four groups (n = 8 each). The experimental AR model was established in the saline (SF), ethanol, and melatonin groups via intraperitoneal (i.p.) injections and intranasal application of ovalbumin. The SF, ethanol, and melatonin groups received daily i.p. saline, 2% ethanol dissolved in saline, and 10 mg/kg melatonin dissolved in 2% ethanol and saline. The control group received the same amount of i.p. and intranasal saline. Total nasal symptom scores were recorded in all rats on days 1 (baseline), 15, 20, 25, and 30. Serum ovalbumin-specific IgE, IL-13, and melatonin levels were measured on days 1 (baseline), 15, and 30. The nasal mucosa of all rats was scored histopathologically. RESULTS The total nasal symptom scores and serum ovalbumin-specific IgE values of the SF, ethanol, and melatonin groups were significantly higher on day 15 than those of the control group. On day 30, the scores and serum ovalbumin-specific IgE values of the melatonin group were similar to those of the control, whereas the SF and ethanol groups had statistically higher scores. The histological scores of the SF and ethanol groups were significantly higher than those of the control and melatonin groups, but no significant difference was found between the melatonin and control groups. CONCLUSION Melatonin reduced total nasal symptom scores and serum ovalbumin-specific IgE levels and improved histological inflammation parameters in the ovalbumin-induced rat experimental AR model.
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Affiliation(s)
- Asli Cakir Cetin
- Department of Otorhinolaryngology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey.
| | - Mustafa Cenk Ecevit
- Department of Otorhinolaryngology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
| | - Mukaddes Gumustekin
- Department of Pharmacology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
| | - Cetin Pekcetin
- Department of Histology & Embriology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
| | - Seda Ozbal
- Department of Histology & Embriology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
| | - Hande Efe
- Department of Medical Biology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
| | - Pelin Koca
- Department of Pharmacology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
| | - Ozge Akcay
- Department of Pharmacology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
| | - Yesim Tuncok
- Department of Pharmacology, Dokuz Eylul University, School of Medicine, Izmir 35340, Turkey
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Lai WY, Wei CC, Wan L, Mai CH, Lin CL, Tsai JD. Allergic rhinitis and dental-supporting tissue diseases in children. Medicine (Baltimore) 2021; 100:e24780. [PMID: 33607828 PMCID: PMC7899888 DOI: 10.1097/md.0000000000024780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 01/27/2021] [Indexed: 01/05/2023] Open
Abstract
The etiology of dental-supporting tissue diseases in children is multi factorial and not merely related to oral hygiene. Therefore, in the present study, we investigated the relationship between children <18 years old with allergic rhinitis (AR) and the risk of dental-supporting tissue diseases.Data from the National Health Insurance Research Database (NHIRD) of Taiwan were used to conduct a retrospective longitudinal cohort study. The study cohort comprised 378,160 patients with AR (AR group) and 378,160 patients without AR (non-AR group), who were selected through frequency matching based on age, sex, and the index year. The study patients were followed until dental-supporting tissue diseases occurrence, withdrawal from the National Health Insurance program, or December 31, 2013. Cox proportional hazards regression analysis was conducted to calculate the risk of dental-supporting tissue diseases in the AR group after adjustment for age, sex, and relative comorbidities.The adjusted HRs of periodontal, pulp, and periapical diseases in AR children were higher than those in the non-AR controls (1.51, 95% CI: 1.50 to 1.53; 1.06, 95% CI: 1.05 to 1.07, respectively). The AR to non-AR HRs of these inflammatory dental diseases were particularly higher in children <6 years old and in boys. The HRs of periodontal, pulp, and periapical diseases were greatest in those with >5 AR-related medical visits/year (5.57, 95% CI: 5.50 to 5.56; 4.06, 95% CI: 4.00 to 4.12, respectively).Children with AR had a greater risk of inflammatory dental-supporting tissue diseases, particularly those <6 years old with primary teeth, boys, and those with severe persistent AR.
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Affiliation(s)
- Wan-Yu Lai
- Department of Chinese Medicine, China Medical University Hospital
- School of Chinese Medicine, China Medical University
| | - Chang-Ching Wei
- Children's Hospital, China Medical University Hospital
- School of Medicine, China Medical University, Taichung
| | - Lei Wan
- School of Chinese Medicine, China Medical University
| | - Chen-Hao Mai
- Department of Pediatrics, Chang Bing Show Chwan Memorial Hospital, Changhua County
| | - Cheng-Li Lin
- Management Office for Health Data, China Medical University Hospital
- Institute of Biostatistics, China Medical University
| | - Jeng-Dau Tsai
- School of Medicine, Chung Shan Medical University
- Department of Pediatrics, Chung Shan Medical University Hospital, Taichung, Taiwan
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