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Liu A, Zhang Y, Lin Y, Li X, Wang S, Pu W, Liu X, Jiang Z, Xiao Z. A rat model of adenoid hypertrophy constructed by using ovalbumin and lipopolysaccharides to induce allergy, chronic inflammation, and chronic intermittent hypoxia. Animal Model Exp Med 2024. [PMID: 38572767 DOI: 10.1002/ame2.12396] [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: 08/30/2023] [Accepted: 01/18/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND Adenoid hypertrophy (AH) is a common pediatric disease that significantly impacts the growth and quality of life of children. However, there is no replicable and valid model for AH. METHODS An AH rat model was developed via comprehensive allergic sensitization, chronic inflammation induction, and chronic intermittent hypoxia (CIH). The modeling process involved three steps: female Sprague-Dawley rats (aged 4-5 weeks) were used for modeling. Allergen sensitization was induced via intraperitoneal administration and intranasal provocation using ovalbumin (OVA); chronic nasal inflammation was induced through intranasal lipopolysaccharide (LPS) administration for sustained nasal irritation; CIH akin to obstructive sleep apnea/hypopnea syndrome was induced using an animal hypoxia chamber. Postmodel establishment, behaviors, and histological changes in nasopharynx-associated lymphoid tissue (NALT) and nasal mucosa were assessed. Arterial blood gas analysis and quantification of serum and tissue levels of (interleukin) IL-4 and IL-13, OVA-specific immunoglobulin E (sIgE), eosinophil cationic protein (ECP), tumor necrosis factor (TNF-α), IL-17, and transforming growth factor (TGF)-β were conducted for assessment. The treatment group received a combination of mometasone furoate and montelukast sodium for a week and then was evaluated. RESULTS Rats exhibited notable nasal symptoms and hypoxia after modeling. Histopathological analysis revealed NALT follicle hypertrophy and nasal mucosa inflammatory cell infiltration. Elevated IL-4, IL-13, IL-17, OVA-sIgE, ECP, and TNF-α levels and reduced TGF-β levels were observed in the serum and tissue of model-group rats. After a week of treatment, the treatment group exhibited symptom and inflammatory factor improvement. CONCLUSION The model effectively simulates AH symptoms and pathological changes. But it should be further validated for genetic, immunological, and hormonal backgrounds in the currently used and other strains and species.
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Affiliation(s)
- Anqi Liu
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yixing Zhang
- Department of Pediatrics, Lishui Hospital of Traditional Chinese Medicine, Lishui, China
| | - Yan Lin
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xuejun Li
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuming Wang
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wenyan Pu
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiuxiu Liu
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhiyan Jiang
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhen Xiao
- Department of Pediatrics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Liu W, Jiang H, Liu X, Zheng Y, Liu Y, Pan F, Yu F, Li Z, Gu M, Du Q, Li X, Zhang H, Han D. Altered intestinal microbiota enhances adenoid hypertrophy by disrupting the immune balance. Front Immunol 2023; 14:1277351. [PMID: 38090578 PMCID: PMC10715246 DOI: 10.3389/fimmu.2023.1277351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/06/2023] [Indexed: 12/18/2023] Open
Abstract
Introduction Adenoid hypertrophy (AH) is a common upper respiratory disorder in children. Disturbances of gut microbiota have been implicated in AH. However, the interplay of alteration of gut microbiome and enlarged adenoids remains elusive. Methods 119 AH children and 100 healthy controls were recruited, and microbiome profiling of fecal samples in participants was performed using 16S rRNA gene sequencing. Fecal microbiome transplantation (FMT) was conducted to verify the effects of gut microbiota on immune response in mice. Results In AH individuals, only a slight decrease of diversity in bacterial community was found, while significant changes of microbial composition were observed between these two groups. Compared with HCs, decreased abundances of Akkermansia, Oscillospiraceae and Eubacterium coprostanoligenes genera and increased abundances of Bacteroides, Faecalibacterium, Ruminococcus gnavus genera were revealed in AH patients. The abundance of Bacteroides remained stable with age in AH children. Notably, a microbial marker panel of 8 OTUs were identified, which discriminated AH from HC individuals with an area under the curve (AUC) of 0.9851 in the discovery set, and verified in the geographically different validation set, achieving an AUC of 0.9782. Furthermore, transfer of mice with fecal microbiota from AH patients dramatically reduced the proportion of Treg subsets within peripheral blood and nasal-associated lymphoid tissue (NALT) and promoted the expansion of Th2 cells in NALT. Conclusion These findings highlight the effect of the altered gut microbiota in the AH pathogenesis.
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Affiliation(s)
- Wenxin Liu
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Huier Jiang
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiling Liu
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Ministry of Justice, Shanghai, China
| | - Yue Zheng
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yanan Liu
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fen Pan
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fangyuan Yu
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhi Li
- Department of Pathology, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Meizhen Gu
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qingqing Du
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoyan Li
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hong Zhang
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Dingding Han
- Department of Clinical Laboratory, Shanghai Children’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Institute of Pediatric Infection, Immunity, and Critical Care Medicine, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Medical School, Guangxi University, Nanning, China
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Zhu Y, Wang S, Yang Y, Shen B, Wang A, Zhang X, Zhang X, Li N, Gao Z, Liu Y, Zhu J, Wei Z, Guan J, Su K, Liu F, Gu M, Yin S. Adenoid lymphocyte heterogeneity in pediatric adenoid hypertrophy and obstructive sleep apnea. Front Immunol 2023; 14:1186258. [PMID: 37283767 PMCID: PMC10239814 DOI: 10.3389/fimmu.2023.1186258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/09/2023] [Indexed: 06/08/2023] Open
Abstract
Introduction Adenoid hypertrophy is the main cause of obstructive sleep apnea in children. Previous studies have suggested that pathogenic infections and local immune system disorders in the adenoids are associated with adenoid hypertrophy. The abnormalities in the number and function of various lymphocyte subsets in the adenoids may play a role in this association. However, changes in the proportion of lymphocyte subsets in hypertrophic adenoids remain unclear. Methods To identify patterns of lymphocyte subsets in hypertrophic adenoids, we used multicolor flow cytometry to analyze the lymphocyte subset composition in two groups of children: the mild to moderate hypertrophy group (n = 10) and the severe hypertrophy group (n = 5). Results A significant increase in naïve lymphocytes and a decrease in effector lymphocytes were found in severe hypertrophic adenoids. Discussion This finding suggests that abnormal lymphocyte differentiation or migration may contribute to the development of adenoid hypertrophy. Our study provides valuable insights and clues into the immunological mechanism underlying adenoid hypertrophy.
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Affiliation(s)
- Yaxin Zhu
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shengming Wang
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingchao Yang
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bojun Shen
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Anzhao Wang
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoman Zhang
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoxu Zhang
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Niannian Li
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenfei Gao
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuenan Liu
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jingyu Zhu
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhicheng Wei
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian Guan
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kaiming Su
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Feng Liu
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Meizhen Gu
- Department of Otolaryngology Head and Neck Surgery, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Shankai Yin
- Department of Otolaryngology Head and Neck Surgery and Center of Sleep Medicine, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Ye C, Guo X, Wu J, Wang M, Ding H, Ren X. CCL20/CCR6 Mediated Macrophage Activation and Polarization Can Promote Adenoid Epithelial Inflammation in Adenoid Hypertrophy. J Inflamm Res 2022; 15:6843-6855. [PMID: 36583131 PMCID: PMC9793726 DOI: 10.2147/jir.s390210] [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: 09/17/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Background Adenoid hypertrophy (AH) is a chronic or acute obstruction-related ailment of the upper respiratory tract that arises as an inflammatory response to exposure of bacteria, viruses or allergies. Activation and polarization of macrophages are key processes in inflammation-related disorders like AH and CCL20/CCR6 axis is a critical therapeutic target. Purpose To determine that CCL20/CCR6 mediated macrophage activation and polarization can promote adenoid epithelial inflammation in AH. Methods To support this claim, CCL20 and CCR6 expressions were studied in clinical AH samples. In addition, the expressions of cytokines such as TNF-α, IL-1β, IL-6, IL-17, IL-10 and TGF-β were analysed. In vitro, human adenoid epithelial cells were co-cultured with polarized THP-1 and T lymphocyte H9 cells to study the expressions of several inflammatory markers. Results The expressions of M1 macrophage markers CD86 and IL-17 were significantly increased, whereas the expressions of M2 macrophage markers CD206 and FOXP3 were significantly decreased. The THP-1 cells were successfully polarized to M0, M1 and M2 macrophages. The survival of macrophages improved after 24 hr of induction and enhanced TGF-β expression was observed. The expressions of the inflammatory cytokines IL-6, TNF-α, IL-1β and CCL20 increased significantly. Conclusion Collectively, these results suggest that the CCL20/CCR6 mediated macrophage activation and polarization into M1-type macrophages can promote adenoid epithelial inflammation in AH. Further studies are warranted to determine the roles of inflammatory markers in the pathophysiology of AH and identifying potential targets.
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Affiliation(s)
- Chenchen Ye
- The First Clinical College, Nanjing University of Chinese Medicine, Nanjing, 210046, People’s Republic of China,Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Xinxue Guo
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Jiani Wu
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Minhua Wang
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Haiyan Ding
- Department of Pediatrics, Yixing Hospital of Traditional Chinese Medicine, Yixing, 214200, People’s Republic of China
| | - Xianzhi Ren
- The First Clinical College, Nanjing University of Chinese Medicine, Nanjing, 210046, People’s Republic of China,Department of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210046, People’s Republic of China,Department of Pediatrics, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, 210046, People’s Republic of China,Correspondence: Xianzhi Ren, Department of Pediatrics, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, 210046, People’s Republic of China, Email
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Wu X, Pan Z, Liu W, Zha S, Song Y, Zhang Q, Hu K. The Discovery, Validation, and Function of Hypoxia-Related Gene Biomarkers for Obstructive Sleep Apnea. Front Med (Lausanne) 2022; 9:813459. [PMID: 35372438 PMCID: PMC8970318 DOI: 10.3389/fmed.2022.813459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 02/10/2022] [Indexed: 11/13/2022] Open
Abstract
While there is emerging evidence that hypoxia critically contributes to the pathobiology of obstructive sleep apnea (OSA), the diagnostic value of measuring hypoxia or its surrogates in OSA remains unclear. Here we investigated the diagnostic value of hypoxia-related genes and explored their potential molecular mechanisms of action in OSA. Expression data from OSA and control subjects were downloaded from the Gene Expression Omnibus database. Differentially-expressed genes (DEGs) between OSA and control subjects were identified using the limma R package and their biological functions investigated with the clusterProfiler R package. Hypoxia-related DEGs in OSA were obtained by overlapping DEGs with hypoxia-related genes. The diagnostic value of hypoxia-related DEGs in OSA was evaluated by receiver operating curve (ROC) analysis. Random forest (RF) and lasso machine learning algorithms were used to construct diagnostic models to distinguish OSA from control. Geneset enrichment analysis (GSEA) was performed to explore pathways related to key hypoxia-related genes in OSA. Sixty-three genes associated with hypoxia, transcriptional regulation, and inflammation were identified as differentially expressed between OSA and control samples. By intersecting these with known hypoxia-related genes, 17 hypoxia-related DEGs related to OSA were identified. Protein-protein interaction network analysis showed that 16 hypoxia-related genes interacted, and their diagnostic value was further explored. The 16 hypoxia-related genes accurately predicted OSA with AUCs >0.7. A lasso model constructed using AREG, ATF3, ZFP36, and DUSP1 had a better performance and accuracy in classifying OSA and control samples compared with an RF model as assessed by multiple metrics. Moreover, GSEA revealed that AREG, ATF3, ZFP36, and DUSP1 may regulate OSA via inflammation and contribute to OSA-related cancer risk. Here we constructed a reliable diagnostic model for OSA based on hypoxia-related genes. Furthermore, these transcriptional changes may contribute to the etiology, pathogenesis, and sequelae of OSA.
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Gao K, Li Y, Yue Z, Han J, Zhou X, Wang X. Down-regulation of anti-inflammatory TIPE2 may aggravate adenoidal hypertrophy in children. FEBS Open Bio 2020; 10:761-766. [PMID: 32100476 PMCID: PMC7193160 DOI: 10.1002/2211-5463.12821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/10/2020] [Accepted: 02/24/2020] [Indexed: 11/11/2022] Open
Abstract
Adenoidal hypertrophy (AH) is a common disorder in the pediatric population, with common symptoms including mouth breathing, nasal congestion, hyponasal speech, snoring and obstructive sleep apnea. Although the pathogenesis of AH has not been fully elucidated, recent studies have indicated that immune responses may play an important role in AH. Tumor necrosis factor‐alpha (TNF‐α)‐induced protein‐8 like‐2 (TIPE2) is a newly identified protein that negatively regulates the activation of inflammatory pathways. Here, we investigated the effect of TIPE2 in AH in children. We observed that the levels of TNF‐α and interleukin‐6 were greater in the adenoid tissue of AH children than in healthy control subjects (P < 0.01), and this increase was positively correlated with the severity of AH. The level of TIPE2 expression was decreased compared with control and was negatively correlated with AH. TIPE2 overexpression in primary human monocytes (isolated from adenoid tissue of children with AH) inhibited the activation of nuclear factor‐κB and the expression of TNF‐α and interleukin‐6. These results suggest that overexpression of TIPE2 may attenuate AH through inactivation of the nuclear factor‐κB signaling pathway.
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Affiliation(s)
- Kun Gao
- Department of Otorhinolaryngology-Head and Neck Surgery, Shandong Provincial Hospital affiliated to Shandong University, Jinan City, China
| | - Yanzhong Li
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan City, China
| | - Zhiyong Yue
- Department of Otorhinolaryngology-Head and Neck Surgery, Shandong Provincial Hospital affiliated to Shandong University, Jinan City, China
| | - Jie Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Shandong Provincial Hospital affiliated to Shandong University, Jinan City, China
| | - Xuanchen Zhou
- Department of Otorhinolaryngology-Head and Neck Surgery, Shandong Provincial Hospital affiliated to Shandong University, Jinan City, China
| | - Xiaoting Wang
- Department of Otorhinolaryngology-Head and Neck Surgery, Shandong Provincial Hospital affiliated to Shandong University, Jinan City, China
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Min HJ, Kim KS. IL-17C expression and its correlation with pediatric adenoids: a preliminary study. Int J Med Sci 2020; 17:2603-2610. [PMID: 33162788 PMCID: PMC7645328 DOI: 10.7150/ijms.49244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/09/2020] [Indexed: 11/05/2022] Open
Abstract
Objective: Interleukin-17 (IL-17) C is a cytokine expressed by epithelial cells in response to bacterial stimulation. In contrast to other members of the IL-17 family of cytokines, IL-17C is upregulated early during infection, maintains integrity of the epithelial layer barrier, and mediates the innate immune response. We investigated the expression profile of IL-17C in pediatric adenoids. Methods: Pediatric adenoid tissues and lavage fluids were collected from a total of 38 subjects. The Limulus amebocyte lysate test and real-time PCR using Staphylococcus aureus primers were performed to evaluate bacterial contents in adenoids. Expression of IL-17RE in adenoids was analyzed using real-time polymerase chain reaction and western blot. The expression of IL-17C was evaluated by western blot and immunohistochemistry and compared between allergic rhinitis (AR) and control subjects. The levels of Hsp27, Hsp70, and IL-17C in adenoid lavage fluids were evaluated by enzyme-linked immunosorbent assay, and the correlation between these molecules was statistically analyzed. Results: The pediatric adenoids were found to be exposed to bacteria and had a normal flora comprising both gram-negative and -positive bacteria. IL-17RE, an IL-17C specific receptor, was highly expressed in the epithelium of adenoids. IL-17C was expressed in all evaluated adenoid tissue samples, irrespective of the allergic status of the patient. IL-17C secretion was detected in half of the adenoid lavage fluid samples and was associated with Hsp70 level. Conclusion: Our findings indicate the possible role of pediatric adenoids in innate immunity modulation via an innate immunity-associated cytokine.
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Affiliation(s)
- Hyun Jin Min
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Kyung Soo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Republic of Korea
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Lagravère MO, Zecca PA, Caprioglio A, Fastuca R. Metabolic effects of treatment in patients with obstructive sleep apnea: a systematic review. Minerva Pediatr 2019; 71:380-389. [DOI: 10.23736/s0026-4946.18.05223-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Min HJ, Park JS, Kim CE, Kim KS. Profiling of heat shock proteins 27 and 70 in adenoids of children. Eur Arch Otorhinolaryngol 2019; 276:2483-2489. [PMID: 31240454 DOI: 10.1007/s00405-019-05528-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 06/18/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE Heat shock protein (HSP)27 and 70 are molecular chaperones that may have immunomodulatory functions. We determined if and at what levels each are expressed in the adenoids of pediatric subjects. We also examined tissue distributions, associated clinical characteristics, and antibacterial effects. METHODS Western blot, enzyme-linked immunosorbent assay (ELISA), and immunohistochemistry were applied to adenoidal tissues and lavage fluids obtained from children (N = 40) undergoing adenotonsillectomy. RESULTS Via western blot and ELISA, both HSP27 and 70 were regularly detected in adenoidal tissue and in lavage fluid samples. HSP27 was highly expressed in epithelium, whereas HSP70 showed strong subepithelial positivity and bore a significant relation to adenoidal size. Assayed levels of HSP27 and 70 correlated inversely, and their addition to culture media independently increased bacterial numbers (Staphylococcus aureus). Upon the precipitation of each from adenoidal lavage fluids, bacterial counts declined. CONCLUSIONS HSP27 and 70 are readily expressed in the adenoids of children and may be implicated in immunologic responses.
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Affiliation(s)
- Hyun Jin Min
- Department of Otorhinolaryngo-Logy-Head and Neck Surgery, Chung-Ang University Hospital, College of Medicine, 224-1 Heukseok-dong, Dongjak-gu, Seoul, 156-755, Republic of Korea.,Chung-Ang University Hospital, Biomedical Research Institute, 224-1 Heukseok-dong, Dongjak-gu, Seoul, 156-755, Republic of Korea
| | - Joon Soon Park
- Department of Otorhinolaryngo-Logy-Head and Neck Surgery, Chung-Ang University Hospital, College of Medicine, 224-1 Heukseok-dong, Dongjak-gu, Seoul, 156-755, Republic of Korea
| | - Chang Eurn Kim
- Department of Otorhinolaryngo-Logy-Head and Neck Surgery, Chung-Ang University Hospital, College of Medicine, 224-1 Heukseok-dong, Dongjak-gu, Seoul, 156-755, Republic of Korea
| | - Kyung Soo Kim
- Department of Otorhinolaryngo-Logy-Head and Neck Surgery, Chung-Ang University Hospital, College of Medicine, 224-1 Heukseok-dong, Dongjak-gu, Seoul, 156-755, Republic of Korea.
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Smith DF, Amin RS. OSA and Cardiovascular Risk in Pediatrics. Chest 2019; 156:402-413. [PMID: 30790552 DOI: 10.1016/j.chest.2019.02.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 01/21/2019] [Accepted: 02/08/2019] [Indexed: 02/07/2023] Open
Abstract
OSA occurs in approximately 1% to 5% of children in the United States. Long-term cardiovascular risks associated with OSA in the adult population are well documented. Although changes in BP regulation occur in children with OSA, the pathways leading to chronic cardiovascular risks of OSA in children are less clear. Risk factors associated with cardiovascular disease in adult populations could carry the same future risk for children. It is imperative to determine whether known mechanisms of cardiovascular diseases in adults are like those that lead to pediatric disease. Early pathophysiologic changes may lead to a lifetime burden of cardiovascular disease and early mortality. With this perspective in mind, our review discusses pathways leading to cardiovascular pathology in children with OSA and provides a comprehensive overview of recent research findings related to cardiovascular sequelae in the pediatric population.
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Affiliation(s)
- David F Smith
- Division of Pediatric Otolaryngology-Head and Neck Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Division of Pulmonary and Sleep Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Raouf S Amin
- Division of Pulmonary and Sleep Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.
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Kyd JM, Hotomi M, Kono M, Kurabi A, Pichichero M, Ryan A, Swords WE, Thornton R. Panel 5: Immunology. Otolaryngol Head Neck Surg 2017; 156:S63-S75. [DOI: 10.1177/0194599816663886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Objective To perform a state-of-the-art review of the literature from January 2012 through May 2015 on studies that advanced our knowledge of the innate and adaptive immunology related to otitis media. This review also proposes future directions for research in this area. Data Sources PubMed database of the National Library of Medicine. Review Methods Three subpanels comprising experts in the field focused on sections relevant to cytokines, innate immunity, and adaptive immunity. The review focused on animal, cell line, and human studies and was critical in relation to the recommendations from the previous publication and for determination of the proposed goals and priorities. The panel met at the 18th International Symposium on Recent Advances in Otitis Media in June 2015 to consolidate its prior search results and discuss, plan, and refine the review. The panel approved the final draft. Conclusion From 2012 to 2014, tremendous progresses in immunology of otitis media were established—especially in the areas of innate immunity associated with the pathogenesis of otitis media. Implications for Practice The advances of the past 4 years formed the basis for a series of short- and long-term research goals in an effort to guide the field. Accomplishing these goals will provide opportunities for the development of novel interventions, including new ways to better treat and prevent otitis media, especially for recurrent otitis media.
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Affiliation(s)
| | | | | | - Arwa Kurabi
- University of California, San Diego, California, USA
| | | | - Allen Ryan
- University of California, San Diego, California, USA
| | - W. Edward Swords
- Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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Kwon OE, Park SH, Kim SS, Shim HS, Kim MG, Kim YI, Kim SH, Yeo SG. Increased IL-17 and 22 mRNA expression in pediatric patients with otitis media with effusion. Int J Pediatr Otorhinolaryngol 2016; 90:188-192. [PMID: 27729129 DOI: 10.1016/j.ijporl.2016.09.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 08/24/2016] [Accepted: 09/20/2016] [Indexed: 12/30/2022]
Abstract
OBJECTIVES Middle ear effusion has been reported to be associated with immune responses in patients with otitis media with effusion (OME). Although various cytokines are involved in immunologic responses in patients with OME, no study to date has assessed the involvement of the pro-inflammatory cytokines interleukin (IL)-17 and IL-22. This study analyzed the levels of expression of IL-17 and IL-22 in the middle ear effusion of patients with OME. METHODS Patients aged <11 years who were diagnosed with chronic OME and underwent ventilation tube insertion from May 2013 to August 2015 were enrolled. Effusion fluid samples were obtained during surgery and levels of IL-17 and IL-22 mRNAs assessed by real-time PCR. IL-17 and IL-22 mRNA levels were compared in patients with effusion fluid positive and negative for bacteria; in patients with and without accompanying diseases, recurrent disease, and re-operation; and relative to fluid characteristics. RESULTS The study cohort included 70 pediatric patients, 46 boys and 24 girls, of mean age 4.31 ± 2.11 years. The levels of IL-17 and IL-22 mRNA were higher in patients with than without sinusitis, but only IL-22 mRNA levels differed significantly (p < 0.05). The level of IL-17 mRNA was significantly higher in patients who did than did not undergo T&A (p < 0.05). The level of IL-22 expression was significantly higher in mucoid and purulent middle ear fluid samples than in serous fluid samples (p < 0.05). CONCLUSION IL-17 and IL-22 mRNAs are involved in the pathophysiology of OME and are significantly higher in subjects with than without accompanying diseases.
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Affiliation(s)
- Oh Eun Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Sang Hyun Park
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Sung Su Kim
- Department of Biochemistry and Molecular Biology, Medical Science and Engineering Research Center for Bioreaction to Reactive Oxygen Species, BK-21, School of Medicine, Kyung Hee University, Seoul, 130-701, South Korea
| | - Haeng Seon Shim
- Department of Anesthesiology and Pain Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Min Gyeong Kim
- Department of Anesthesiology and Pain Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, South Korea
| | - Young Il Kim
- Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, South Korea
| | - Sang Hoon Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Seung Geun Yeo
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, South Korea; Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, South Korea.
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Th17/Treg balance in children with obstructive sleep apnea syndrome and the relationship with allergic rhinitis. Int J Pediatr Otorhinolaryngol 2015; 79:1448-54. [PMID: 26166452 DOI: 10.1016/j.ijporl.2015.06.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 06/19/2015] [Accepted: 06/20/2015] [Indexed: 02/04/2023]
Abstract
OBJECTIVE This study aims to explore the role of the Th17 to Treg cell ratio in children with OSA and its relationship with allergic rhinitis. METHODS The study included 127 children diagnosed with OSA by polysomnography (PSG) testing and 29 children without OSA. The 127 children with OSA were divided into the following groups: OSA with moderate adenoidal hypertrophy (n=47), OSA with severe adenoidal hypertrophy (n=49), and OSA complicated by allergic rhinitis (AR) (n=31). The adenoids of the 29 children without OSA were mildly hypertrophic. We measured the number of Th17 and Treg cells, the levels of related serum cytokines in cellular secretions, and the expression of key transcription factors in both the peripheral blood and adenoid tissue. The Th17/Treg ratio was calculated and analyzed between groups. The numbers of Th17 and Treg cells were measured by flow cytometry; the secreted IL-17, IL-10, and TGF-β were measured by ELISA; and the expression levels of RORγt and Foxp3 were measured by RT-PCR. RESULTS Compared with the control group, OSA children exhibited a significant increase in the number of peripheral Th17 cells, Th17-related cytokine secretion (IL-17), and RORγt mRNA levels, whereas they exhibited a decrease in the number of Treg cells, Treg-related cytokine secretions (IL-10, TGF-β) and Foxp3 mRNA levels. The Th17/Treg ratio was higher (p<0.05) in the OSA groups than in the control group. The Th17/Treg ratio was correlated with the size of the adenoids. We also found that the Th17/Treg balance in OSA patients was complicated by allergic rhinitis; the increase was significantly larger in the AR group (p<0.05, p=0.021) than in OSA groups without AR. These results were observed in both the peripheral blood and local adenoid tissue. CONCLUSION The Th17/Treg imbalance may increase the risk of developing OSA, and AR may promote the development of the disease. These results provide an alternative explanation for OSA pathogenesis that warrants additional research and presents new directions for the prevention and treatment of OSA in children.
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Ying L, Li H, Pan Z, Ma S, Zhang P, Wang Q, Lu G, Zhou J. Relationship of redundant Th17 cells and IL-17A, but not IL-17 F, with the severity of obstructive sleep apnoea/hypopnoea syndrome (OSAHS). BMC Pulm Med 2014; 14:84. [PMID: 24885744 PMCID: PMC4026153 DOI: 10.1186/1471-2466-14-84] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 05/08/2014] [Indexed: 01/05/2023] Open
Abstract
Background The pathogenesis of obstructive sleep apnoea/hypopnoea syndrome (OSAHS), a highly prevalent disease, is not completely understood. The purpose of this study was to investigate the contributions of Th17 cells and the Th17-associated cytokines IL-17A and IL-17 F to OSAHS. Methods 46 male patients with a clinical suspicion of OSAHS were enrolled and divided into four groups based on their polysomnography results: controls and mild, moderate, and severe OSAHS. The serum levels of IL-17A and IL-17 F were determined by enzyme linked immunosorbent assay (ELISA), pulmonary arterial pressure (PAP) was determined by echocardiography, and Th17 cell frequencies in peripheral blood were measured by flow cytometry. Results Serum IL-17A levels in the severe group were elevated (median value: control group 0.89 pg/ml, mild OSAHS 1.02 pg/ml, moderate OSAHS 1.18 pg/ml, and severe OSAHS 1.62 pg/ml; p < 0.05) and positively correlated with AHI (r = 0.52, p < 0.05) but negatively related to the mean O2 saturation and lowest O2 saturation (r = −0.349, p < 0.05; and r = −0.336, p < 0.05, respectively). Although the frequencies of Th17 cells in the OSAHS groups were higher than that in the control group, these differences were not significant (p = 0.275). Pulmonary arterial hypertension was not present in our patients as the median PAP of the normal control and the mild, moderate, and severe OSAHS groups were 26, 27.5, 24.5, and 25.5 mmHg, respectively (p = 0.676). Conclusion IL-17A may be involved in the pathogenesis of OSAHS and may represent a target for therapeutic intervention.
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Affiliation(s)
| | - Hequan Li
- Department of Respiratory Diseases, First Affiliated Hospital of Zhejiang, University School of Medicine, Zhejiang University, Zhejiang, P,R, China.
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Yan G, Xi Y, Xu S, Lin Y, Chen J, Dai H, Xia J, Li C, Li Q, Li Z, Qi Z. Inhibition of accelerated rejection mediated by alloreactive CD4⁺ memory T cells and prolonged allograft survival by arsenic trioxide. Immunol Invest 2014; 42:438-54. [PMID: 23802174 DOI: 10.3109/08820139.2013.801986] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The aim of this study was to evaluate and determine the potential mechanisms of As₂O₃ in accelerated rejection mediated by alloreactive CD4⁺ memory T cells. Vascularized heterotopic cardiac transplantation from C57BL/6 mice to nude mice (pre-transferred CD4⁺ memory T cells) was performed on Day 0, and As₂O₃ was administered to recipient mice from Day 0 to 10. As a result, As₂O₃ could reduce the proliferation of allo-primed CD4⁺ memory T cells in vitro in MLR and the baseline rate of proliferation was restored by the addition of exogenous IL-2. In vivo, compared with the control[+] group, the mean survival time of cardiac allografts in the As₂O₃ group was prolonged from 5.8 ± 0.7 to 14.2 ± 2.5 days. Five days after transplantation, the relative gene expression of IL-2, IFN-γ and Foxp3 was reduced in the grafts by As₂O₃ treatment, but the expression of IL-10 and TGF-β was increased. Correspondingly, the proportions of CD4⁺ T cells, CD4⁺ memory T cells and regulatory T cells (Tregs), both in recipient spleens and lymph nodes, were lowered. These results indicate the potential of As2O3 as a novel immunosuppressant targeting CD4⁺ memory T cells.
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Affiliation(s)
- Guoliang Yan
- Basic Medical Department of Medical College, Xiamen University, Xiamen City, Fujian Province, P. R. China
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Avalos-Martínez CE, Rodríguez-Alba JC, Berrón-Ruiz L, Romero-Ramírez H, Santos-Argumedo L, Jiménez-Zamudio LA, Domínguez-López ML, Vega-López A, García-Latorre E. Measurement of suppressor activity of T CD4⁺CD25⁺ T reg cells using bromodeoxyuridine incorporation assay. Immunol Invest 2013; 42:369-81. [PMID: 23883202 DOI: 10.3109/08820139.2013.773337] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The suppressor effect of T regulatory lymphocytes in co-cultures with T effector cells obtained by magnetic columns from healthy donors and activated by CD3/CD28 was measured by a proliferation assay using BrdU incorporation and an ELISA test. Tritiated thymidine incorporation was used as a reference since it is the gold standard for proliferation assays. Both methods were used simultaneously in the same samples in order to compare them. Correlation between them was statistically significant (p < 0.001). The purification using magnetic columns was very efficient since CD4⁺CD25⁺ cells were also FOXP3⁺ therefore; they were identified as suppressor T cells. The use of BrdU incorporation in suppression assays is an excellent method that avoids the use of radioactive contaminating materials.
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Affiliation(s)
- Claudia E Avalos-Martínez
- Laboratorio de Inmunoquímica I, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Miguel Hidalgo, Mexico
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The treg/th17 imbalance in patients with obstructive sleep apnoea syndrome. Mediators Inflamm 2012; 2012:815308. [PMID: 23345934 PMCID: PMC3549368 DOI: 10.1155/2012/815308] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 12/10/2012] [Indexed: 02/07/2023] Open
Abstract
Obstructive sleep apnoea syndrome (OSAS) is a chronic inflammatory disease regulated by T lymphocytes. Our purpose is to assess the pattern of Th17 cells and CD4+CD25+Foxp3+ regulatory T (Treg) cells in peripheral blood of patients with OSAS. Fourty-four OSAS men and 20 healthy volunteers were enrolled. Twenty-three patients were classified into mild to moderate group and 21 cases were classified into severe group according to the severity of OSAS. We detected the frequencies of Th17 and Treg and related serum cytokines secretion and expressions of key transcription factors. OSAS patients revealed significant increase in peripheral Th17 number, Th17-related cytokines (IL-17 and IL-6), and RORγt mRNA levels. They also presented a significant decrease in Treg number, Treg-related cytokines (TGF-β1), and Foxp3 mRNA levels as compared with normal persons. As a result, the Th17/Treg ratios were markedly more upregulated in OSAS patients than those in control group. Furthermore, the Th17/Treg ratio was positively related to the severity of OSAS and serum levels of C-reactive protein. The development of OSAS may be associated with peripheral Th17/Treg imbalance and characterized by a proinflammatory cytokine microenvironment. These results opened an alternative explanation for the substantial activation of immune cells in OSAS and the development of related complications.
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