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Steffan BN, Townsend EA, Denlinger LC, Johansson MW. Eosinophil-Epithelial Cell Interactions in Asthma. Int Arch Allergy Immunol 2024:1-15. [PMID: 38885626 DOI: 10.1159/000539309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 05/07/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Eosinophils have numerous roles in type 2 inflammation depending on their activation states in the blood and airway or after encounter with inflammatory mediators. Airway epithelial cells have a sentinel role in the lung and, by instructing eosinophils, likely have a foundational role in asthma pathogenesis. SUMMARY In this review, we discuss various topics related to eosinophil-epithelial cell interactions in asthma, including the influence of eosinophils and eosinophil products, e.g., granule proteins, on epithelial cell function, expression, secretion, and plasticity; the effects of epithelial released factors, including oxylipins, cytokines, and other mediators on eosinophils, e.g., on their activation, expression, and survival; possible mechanisms of eosinophil-epithelial cell adhesion; and the role of intra-epithelial eosinophils in asthma. KEY MESSAGES We suggest that eosinophils and their products can have both injurious and beneficial effects on airway epithelial cells in asthma and that there are bidirectional interactions and signaling between eosinophils and airway epithelial cells in asthma.
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Affiliation(s)
- Breanne N Steffan
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Elizabeth A Townsend
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
- Department of Anesthesiology, University of Wisconsin, Madison, Wisconsin, USA
| | - Loren C Denlinger
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Mats W Johansson
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, University of Wisconsin, Madison, Wisconsin, USA
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Liu QQ, Tian CJ, Li N, Chen ZC, Guo YL, Cheng DJ, Tang XY, Zhang XY. Brain-derived neurotrophic factor promotes airway smooth muscle cell proliferation in asthma through regulation of transient receptor potential channel-mediated autophagy. Mol Immunol 2023; 158:22-34. [PMID: 37094390 DOI: 10.1016/j.molimm.2023.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 03/15/2023] [Accepted: 04/04/2023] [Indexed: 04/26/2023]
Abstract
OBJECTIVE Increased proliferation of airway smooth muscle cells (ASMCs) is a key feature of airway remodeling in asthma. This study aims to determine whether brain-derived neurotrophic factor (BDNF) regulates ASMC proliferation and airway remodeling via the transient receptor potential channels (TRPCs)/autophagy axis. METHODS Human ASMCs were isolated and passively sensitized with human asthmatic serum. Protein levels of BDNF and its receptor TrkB, TRPC1/3/6, autophagy markers, intracellular Ca2+ concentration ([Ca2+]i), LC3 immunofluorescence, cell proliferation, cell cycle population were examined. Wistar rats were sensitized with OVA to establish asthma models. RESULTS In asthmatic serum-sensitized human ASMCs, BDNF overexpression or recombinant BDNF (rhBDNF) increased TrkB/TRPC1/3/6 axis, [Ca2+]i, autophagy level, cell proliferation, cell number in the S+G2/M phase and decreased cell number in the G0/G1 phase, whereas BDNF knockdown exerted the opposite effects. Furthermore, TRPC channel blocker SKF96365 and TRPC1/3/6 knockdown reversed the effects of the rhBDNF-mediated induction of [Ca2+]i, autophagy level, cell proliferation and cell number in the S+G2/M phase. Moreover, the autophagy inhibitor (3-MA) rescued the rhBDNF-mediated induction of cell proliferation and cell number in the S+G2/M phase. Further in vivo assays revealed that BDNF altered the pathology of airway remodeling, promoted the infiltration of inflammatory cells, promoted the proliferation of ASMCs, and upregulated the protein levels of TrkB, TRPC1/3/6, and autophagy markers in asthma model rats. CONCLUSION We conclude that BDNF promotes ASMCs proliferation in asthma through TRPC-mediated autophagy induction.
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Affiliation(s)
- Qian-Qian Liu
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Henan University, China
| | - Cui-Jie Tian
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Zhengzhou University, China
| | - Nan Li
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Zhengzhou University, China
| | - Zhuo-Chang Chen
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Zhengzhou University, China
| | - Ya-Li Guo
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Zhengzhou University, China
| | - Dong-Jun Cheng
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Zhengzhou University, China
| | - Xue-Yi Tang
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Zhengzhou University, China
| | - Xiao-Yu Zhang
- Department of Respiratory Disease and Intensive Care, Henan Provincial People's Hospital, China; Department of Respiratory Disease and Intensive Care, People's Hospital of Zhengzhou University, China.
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Nerve growth factor causes epinephrine release dysfunction by regulating phenotype alterations and the function of adrenal medullary chromaffin cells in mice with allergic rhinitis. Mol Med Rep 2023; 27:39. [PMID: 36601769 PMCID: PMC9835056 DOI: 10.3892/mmr.2023.12926] [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: 09/06/2022] [Accepted: 12/06/2022] [Indexed: 01/04/2023] Open
Abstract
The presence of allergic rhinitis (AR) is an increased risk factor for the occurrence of bronchial asthma (BA). Nerve growth factor (NGF), in addition to its key role in the development and differentiation of neurons, may also be an important inflammatory factor in AR and BA. However, the pathogenesis of the progression of AR to BA remains to be elucidated. The present study aimed to investigate the ability of NGF to mediate nasobronchial interactions and explore possible underlying molecular mechanisms. In the present study, an AR mouse model was established and histology of nasal mucosa tissue injury was determined. The level of phenylethanolamine N‑methyl transferase in adrenal medulla was determined by immunofluorescence. Primary adrenal medullary chromaffin cells (AMCCs) were isolated and cultured from the adrenal medulla of mice. The expression levels of synaptophysin (SYP), STAT1, JAK1, p38 and ERK in NGF‑treated and untreated AMCCs were detected by reverse‑transcription‑quantitative PCR and western blotting. The epinephrine (EPI) and norepinephrine (NE) concentrations were measured by ELISA. It was found that the expression of SYP in AMCCs was enhanced in the presence of NGF, whereas, the concentration of EPI decreased significantly under the same conditions. Furthermore, NGF mediated the phenotypic and functional changes of AMCCs, resulting in decreased EPI secretion via JAK1/STAT1, p38 and ERK signaling. In conclusion, these findings could provide novel evidence for the role of NGF in regulating neuroendocrine mechanisms.
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Rubin L, Stabler CT, Schumacher-Klinger A, Marcinkiewicz C, Lelkes PI, Lazarovici P. Neurotrophic factors and their receptors in lung development and implications in lung diseases. Cytokine Growth Factor Rev 2021; 59:84-94. [PMID: 33589358 DOI: 10.1016/j.cytogfr.2021.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 01/29/2021] [Indexed: 12/14/2022]
Abstract
Although lung innervation has been described by many studies in humans and rodents, the regulation of the respiratory system induced by neurotrophins is not fully understood. Here, we review current knowledge on the role of neurotrophins and the expression and function of their receptors in neurogenesis, vasculogenesis and during the embryonic development of the respiratory tree and highlight key implications relevant to respiratory diseases.
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Affiliation(s)
- Limor Rubin
- Allergy and Clinical Immunology Unit, Department of Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
| | - Collin T Stabler
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, PA, USA.
| | - Adi Schumacher-Klinger
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel.
| | - Cezary Marcinkiewicz
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, PA, USA.
| | - Peter I Lelkes
- Department of Bioengineering, College of Engineering, Temple University, Philadelphia, PA, USA.
| | - Philip Lazarovici
- School of Pharmacy Institute for Drug Research, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel.
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Smith CA, Paskhover B, Mammis A. Molecular mechanisms of trigeminal neuralgia: A systematic review. Clin Neurol Neurosurg 2020; 200:106397. [PMID: 33338828 DOI: 10.1016/j.clineuro.2020.106397] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 01/14/2023]
Abstract
OBJECTIVE To conduct a systematic review of the available literature for primary research articles identifying potential gene mutations, polymorphisms and other molecular regulatory mechanisms related to trigeminal neuralgia in order to identify the genetic and molecular models of primary trigeminal neuralgia currently being investigated. METHODS PubMed and Web of Science were systematically searched to identify primary research articles discussing genetic predictors of trigeminal neuralgia and neuropathic pain that were published prior to July 2020. This review was conducted according to PRISMA guidelines. RESULTS Out of the 333 articles originally identified, a total of 14 papers were selected for study inclusion. These articles included 5 human studies, 6 mouse studies and 3 rat studies. Four articles investigated sodium channels, 1 investigated a sodium channel and nerve growth factor receptor, 2 investigated potassium channels, 1 investigated calcium channels, 1 investigated the downstream regulatory element antagonist modulator protein, 1 investigated the dynorphin-kappa opioid receptor system, 1 investigated TRPA1, 1 investigated the Nrg1/ErbB3/ErbB2 signaling complex, 1 investigated a serotonin transporter and 1 investigated potassium channels, sodium channels, calcium channels, chloride channels, TRP channels and gap junctions. CONCLUSION Researchers have identified multiple genetic and molecular targets involved with potential pathophysiologies that have a relationship to the creation of trigeminal neuralgia. At this time, there does not seem to be clear causal frontrunner, demonstrating the possibility that genetic predisposition to trigeminal neuralgia may involve multiple genes and/or downstream products, such as ion channels.
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Affiliation(s)
- Cynthia A Smith
- Rutgers New Jersey Medical School, Department of Neurological Surgery, Newark, NJ, USA.
| | - Boris Paskhover
- Rutgers New Jersey Medical School, Department of Otolaryngology - Head & Neck Surgery, Newark, NJ, USA.
| | - Antonios Mammis
- NYU Grossman School of Medicine, Department of Neurosurgery, New York, NY, USA.
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Sreter KB, Popovic-Grle S, Lampalo M, Konjevod M, Tudor L, Nikolac Perkovic M, Jukic I, Bingulac-Popovic J, Safic Stanic H, Markeljevic J, Pivac N, Svob Strac D. Plasma Brain-Derived Neurotrophic Factor (BDNF) Concentration and BDNF/ TrkB Gene Polymorphisms in Croatian Adults with Asthma. J Pers Med 2020; 10:jpm10040189. [PMID: 33114368 PMCID: PMC7712770 DOI: 10.3390/jpm10040189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/18/2020] [Accepted: 10/22/2020] [Indexed: 12/14/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF) and its tropomyosin-related kinase B (TrkB) receptor might contribute to normal lung functioning and immune responses; however, their role in asthma remains unclear. Plasma BDNF concentrations, as well as BDNF and NTRK2 (TrkB gene) polymorphisms, were investigated in 120 asthma patients and 120 healthy individuals using enzyme-linked immunosorbent assay and polymerase chain reaction, respectively. The genotype and allele frequencies of BDNF Val66Met (rs6265) and NTRK2 rs1439050 polymorphisms did not differ between healthy individuals and asthma patients, nor between patients grouped according to severity or different asthma phenotypes. Although plasma BDNF concentrations were higher among healthy subjects carrying the BDNF Val66Met GG genotype compared to the A allele carriers, such differences were not detected in asthma patients, suggesting the influences of other factors. Plasma BDNF concentration was not affected by NTRK2 rs1439050 polymorphism. Asthma patients had higher plasma BDNF concentrations than control subjects; however, no differences were found between patients subdivided according to asthma severity, or Type-2, allergic, and eosinophilic asthma. Higher plasma BDNF levels were observed in asthma patients with aspirin sensitivity and aspirin-exacerbated respiratory disease. These results suggest that plasma BDNF may serve as a potential peripheral biomarker for asthma, particularly asthma with aspirin sensitivity.
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Affiliation(s)
- Katherina B. Sreter
- Department of Clinical Immunology, Pulmonology and Rheumatology, University Hospital Centre “Sestre Milosrdnice”, 10000 Zagreb, Croatia; (K.B.S.); (J.M.)
| | - Sanja Popovic-Grle
- Clinic for Lung Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia; (S.P.-G.); (M.L.)
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Marina Lampalo
- Clinic for Lung Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia; (S.P.-G.); (M.L.)
| | - Marcela Konjevod
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Lucija Tudor
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Matea Nikolac Perkovic
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Irena Jukic
- Croatian Institute of Transfusion Medicine, 10000 Zagreb, Croatia; (I.J.); (J.B.-P.); (H.S.S.)
- Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
| | - Jasna Bingulac-Popovic
- Croatian Institute of Transfusion Medicine, 10000 Zagreb, Croatia; (I.J.); (J.B.-P.); (H.S.S.)
| | - Hana Safic Stanic
- Croatian Institute of Transfusion Medicine, 10000 Zagreb, Croatia; (I.J.); (J.B.-P.); (H.S.S.)
| | - Jasenka Markeljevic
- Department of Clinical Immunology, Pulmonology and Rheumatology, University Hospital Centre “Sestre Milosrdnice”, 10000 Zagreb, Croatia; (K.B.S.); (J.M.)
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Nela Pivac
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
| | - Dubravka Svob Strac
- Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia; (M.K.); (L.T.); (M.N.P.); (N.P.)
- Correspondence: ; Tel.: +385-1-457-1365
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Costa GMF, Rocha LPC, Siqueira SRDTD, Moreira PR, Almeida-Leite CM. No Association of Polymorphisms in Nav1.7 or Nerve Growth Factor Receptor Genes with Trigeminal Neuralgia. PAIN MEDICINE 2020; 20:1362-1369. [PMID: 30307573 DOI: 10.1093/pm/pny191] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Trigeminal neuralgia is defined as a sudden severe shock-like pain within the distribution of the trigeminal nerve. Pain is a subjective experience that is influenced by gender, culture, environment, psychological traits, and genes. Sodium channels and nerve growth factor play important roles in the transmission of nociceptive signals and pain. The aim of this study was to investigate the occurrence of Nav1.7 sodium channel and nerve growth factor receptor TrkA gene polymorphisms (SCN9A/rs6746030 and NTRK1/rs633, respectively) in trigeminal neuralgia patients. METHODS Ninety-six subjects from pain specialty centers in the southeastern region of Brazil were divided into 2 groups: 48 with classical trigeminal neuralgia diagnosis and 48 controls. Pain was evaluated using the visual analog scale and multidimensional McGill Pain Questionnaire. Genomic DNA was obtained from oral swabs in all individuals and was analyzed by real-time polymerase chain reaction. RESULTS No association was observed between evaluated polymorphisms and trigeminal neuralgia. For allele analyses, patients and controls had similar frequencies for both genes. Genotype distribution or allele frequencies of polymorphisms analyzed here did not correlate to pain scores. CONCLUSIONS Although no association of evaluated polymorphisms and trigeminal neuralgia diagnosis or pain severity was observed, our data do not exclude the possibility that other genotypes affecting the expression of Nav1.7 or TrkA are associated with the disease. Further studies should investigate distinct genetic polymorphisms and epigenetic factors that may be important in expression of these molecules.
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Affiliation(s)
- Grazielle Mara Ferreira Costa
- Programa de Pós-Graduação em Patologia, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Luiz Paulo C Rocha
- Programa de Pós-Graduação em Biologia Celular, Instituto de Ciências Biológicas (ICB), UFMG, Belo Horizonte, MG, Brazil
| | | | - Paula Rocha Moreira
- Programa de Pós-Graduação em Biologia Celular, Instituto de Ciências Biológicas (ICB), UFMG, Belo Horizonte, MG, Brazil.,Departamento de Morfologia, ICB, UFMG, Belo Horizonte, MG, Brazil
| | - Camila Megale Almeida-Leite
- Programa de Pós-Graduação em Patologia, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.,Departamento de Morfologia, ICB, UFMG, Belo Horizonte, MG, Brazil
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Neuroinflammatory Gene Expression Pattern Is Similar between Allergic Rhinitis and Atopic Dermatitis but Distinct from Atopic Asthma. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7196981. [PMID: 32596360 PMCID: PMC7305544 DOI: 10.1155/2020/7196981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/22/2020] [Accepted: 05/05/2020] [Indexed: 11/18/2022]
Abstract
Methods In the study, we included 86 children diagnosed with atopic asthma (n = 25), allergic rhinitis (n = 20), and atopic dermatitis (n = 20) and healthy control subjects (n = 21) of Caucasian origin from the Polish population. The blood leukocyte expression of 31 genes involved in neuroinflammatory response (neurotrophins, their receptors, neuropeptides, and histamine signaling pathway) was analysed using TaqMan low-density arrays. The relative expression of selected proteins from plasma was done using TaqMan Protein Assays. Statistical analysis was done using Statistica. Results Blood expression of 31 genes related to neuroimmune interactions showed significant increase in both allergic diseases, allergic rhinitis and atopic dermatitis, in comparison to the control group. We found 12 genes significantly increased in allergic rhinitis and 9 genes in which the expression was elevated in atopic dermatitis. Moreover, 9 genes with changed expression in atopic dermatitis overlapped with those in allergic rhinitis. Atopic asthma showed 5 genes with altered expression. The peripheral expression of neuroinflammatory genes in the human study was verified in target tissues (nasal epithelium and skin) in a rat model of allergic inflammation. Conclusions A common pattern of neuroinflammatory gene expression between allergic rhinitis and atopic dermatitis may reflect similar changes in sensory nerve function during chronic allergic inflammation.
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Kicic A, de Jong E, Ling KM, Nichol K, Anderson D, Wark PAB, Knight DA, Bosco A, Stick SM. Assessing the unified airway hypothesis in children via transcriptional profiling of the airway epithelium. J Allergy Clin Immunol 2020; 145:1562-1573. [PMID: 32113981 DOI: 10.1016/j.jaci.2020.02.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 02/13/2020] [Accepted: 02/19/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Emerging evidence suggests that disease vulnerability is expressed throughout the airways, the so-called unified airway hypothesis, but the evidence to support this is predominantly indirect. OBJECTIVES We sought to establish the transcriptomic profiles of the upper and lower airways and determine their level of similarity irrespective of airway symptoms (wheeze) and allergy. METHODS We performed RNA sequencing on upper and lower airway epithelial cells from 63 children with or without wheeze and accompanying atopy, using differential gene expression and gene coexpression analyses to determine transcriptional similarity. RESULTS We observed approximately 91% homology in the expressed genes between the 2 sites. When coexpressed genes were grouped into modules relating to biological functions, all were found to be conserved between the 2 regions, resulting in a consensus network containing 16 modules associated with ribosomal function, metabolism, gene expression, mitochondrial activity, and antiviral responses through IFN activity. Although symptom-associated gene expression changes were more prominent in the lower airway, they were reflected in nasal epithelium and included IL-1 receptor like 1, prostaglandin-endoperoxide synthase 1, CCL26, and periostin. Through network analysis we identified a cluster of coexpressed genes associated with atopic wheeze in the lower airway, which could equally distinguish atopic and nonatopic phenotypes in upper airway samples. CONCLUSIONS We show that the upper and lower airways are significantly conserved in their transcriptional composition, and that variations associated with disease are present in both nasal and tracheal epithelium. Findings from this study supporting a unified airway imply that clinical insight regarding the lower airway in health and disease can be gained from studying the nasal epithelium.
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Affiliation(s)
- Anthony Kicic
- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia; Occupation and Environment, School of Public Health, Curtin University, Perth, Australia; School of Biomedical Sciences, The University of Western Australia, Nedlands, Australia; Department of Respiratory Medicine, Princess Margaret Hospital for Children, Perth, Australia; Centre for Cell Therapy and Regenerative Medicine, School of Medicine and Pharmacology, The University of Western Australia and Harry Perkins Institute of Medical Research, Nedlands, Australia.
| | - Emma de Jong
- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia
| | - Kak-Ming Ling
- School of Biomedical Sciences, The University of Western Australia, Nedlands, Australia
| | - Kristy Nichol
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia; Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, Newcastle, Australia
| | - Denise Anderson
- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia
| | - Peter A B Wark
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia; Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, Newcastle, Australia
| | - Darryl A Knight
- School of Medicine and Public Health, University of Newcastle, Callaghan, Australia; Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, Newcastle, Australia; Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Anthony Bosco
- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia
| | - Stephen M Stick
- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia; School of Biomedical Sciences, The University of Western Australia, Nedlands, Australia; Department of Respiratory Medicine, Princess Margaret Hospital for Children, Perth, Australia; Centre for Cell Therapy and Regenerative Medicine, School of Medicine and Pharmacology, The University of Western Australia and Harry Perkins Institute of Medical Research, Nedlands, Australia
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- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia
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- Telethon Kids Institute, Centre for Health Research, The University of Western Australia, Nedlands, Australia; Robinson Research Institute, University of Adelaide, Adelaide, Australia; Hunter Medical Research Institute, Priority Research Centre for Asthma and Respiratory Disease, New Lambton Heights, Australia
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Maltese PE, Michelini S, Baronio M, Bertelli M. Molecular foundations of chiropractic therapy. ACTA BIO-MEDICA : ATENEI PARMENSIS 2019; 90:93-102. [PMID: 31577263 PMCID: PMC7233649 DOI: 10.23750/abm.v90i10-s.8768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 08/06/2019] [Indexed: 11/23/2022]
Abstract
Background and aim: Alternative medicine is a broad term used to encompass different therapies, including chiropractic. Chiropractic was called “a science of healing without drugs” by its founder, David Daniel Palmer. It is based on the idea that the body has a powerful self-healing ability and that there is a relationship between body structure and function that affects health. In particular, chiropractic assumes that the nervous system controls the human body through nerves branching from the vertebral column and spinal cord. Researchers do not fully understand how chiropractic therapies affect pain, but chiropractic is widely used today to treat chronic pain, such as back pain. Different studies with animal models have demonstrated that chiropractic therapies mediate neuroplasticity, specifically through modulation of neurotrophins. No studies have yet been published on interaction between neurotrophin gene polymorphisms and chiropractic treatment. Methods: We searched PubMed with the following keywords: chiropractic, neuroplasticity, neurotrophin gene polymorphism for a panorama of on the molecular mechanisms of chiropractic therapy. Results: From the material collected, we identified a set of genes and some functional polymorphisms that could be correlated with better response to chiropractic therapy. Conclusions: Further association studies will be necessary to confirm hypotheses of a correlation between single nucleotide polymorphisms in specific genes and better response to chiropractic therapy. (www.actabiomedica.it)
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Ece A, Coşkun S, Şahin C, Tan I, Karabel D, Çim A. BDNF and NGF gene polymorphisms and urine BDNF-NGF levels in children with primary monosymptomatic nocturnal enuresis. J Pediatr Urol 2019; 15:255.e1-255.e7. [PMID: 30981636 DOI: 10.1016/j.jpurol.2019.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 03/13/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The pathophysiology and genetic influences in nocturnal enuresis have not been fully elucidated. Delayed neuronal maturation has been suggested as a pathogenetic mechanism in primary monosymptomatic nocturnal enuresis (PMNE). Brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) are neurotrophins affecting maturation of the nervous system. OBJECTIVE The aim of this preliminary study was to investigate BDNF and NGF gene polymorphisms and urine levels of BDNF and NGF in children with PMNE as a first time. STUDY DESIGN The single-nucleotide polymorphisms of BDNF (rs6265:G > A:Val66Met; rs8192466:C > T:Thr2Ile) and NGF (rs6330:C > T:Ala35Val, rs11466112:C > T:Arg221Trp) were investigated by comparing 104 children with PMNE and 140 healthy control subjects. Children with non-PMNE were excluded. DNA isolation and detection of polymorphisms were performed by real-time polymerase chain reaction. In addition, urine BDNF and NGF levels of 47 PMNE and 29 healthy children were measured by enzyme-linked immunosorbent assay method and normalized to urine creatinine (Cr) concentration for comparisons. RESULTS There were no differences in genotype and allele frequencies of BDNF rs6265 and NGF rs6330 polymorphisms between patients with PMNE and the control group (P > 0.05). No mutant alleles were found in BDNF rs8192466 and NGF rs11466112 polymorphisms in either group. Children with PMNE had higher urine BDNF/Cr (0.020 ± 0.010 vs 0.010 ± 0.002; P = 0.008) and NGF/Cr ratio (3.01 ± 1.87 pg/mg vs 1.77 ± 0.26 pg/mg; P = 0.002) compared with the control subjects. However, no significant differences were found in BDNF/Cr and NGF/Cr values between GG, GA, and AA genotypes of BDNF rs6265 polymorphism and CC and CT genotypes of NGF rs6330 polymorphism (P > 0.05). DISCUSSION In this study, no association of BDNF and NGF gene polymorphisms with PMNE was found, and urine neurotrophin concentrations were not directly influenced by investigated polymorphisms. Although, previously increased urine neurotrophin secretion has been found in detrusor overactivity, bladder inflammation, and dysfunctional voiding, this preliminary results also showed an increase in neurotrophins in PMNE. Higher urine neurotrophin levels may be related to delayed and continued neuronal maturation or increased production of neurotrophins in the bladder. The increased urine neurotrophins in PMNE may be an indicator of increased sensory nerve excitability of the bladder, contributing to the development of enuresis. CONCLUSION This study showed that investigated neurotrophin gene polymorphisms did not make a significant contribution to the development of PMNE, but urine levels of neurotrophin gene products were higher in PMNE. Owing to the complexity and heterogeneity of genotype-phenotype relationships in enuresis, further studies are needed in PMNE.
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Affiliation(s)
- A Ece
- Dicle University, School of Medicine, Department of Pediatric Nephrology, Diyarbakir, Turkey.
| | - S Coşkun
- Dicle University, School of Medicine, Department of Medical Genetics, Diyarbakir, Turkey
| | - C Şahin
- Dicle University, School of Medicine, Department of Pediatrics, Diyarbakir, Turkey
| | - I Tan
- Dicle University, School of Medicine, Department of Pediatrics, Diyarbakir, Turkey
| | - D Karabel
- Dicle University, School of Medicine, Department of Pediatrics, Diyarbakir, Turkey
| | - A Çim
- Dicle University, School of Medicine, Department of Medical Genetics, Diyarbakir, Turkey
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12
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Renz H. DNA methylation and a biomarker panel to predict asthma development. J Allergy Clin Immunol 2019; 144:49-50. [PMID: 30981596 DOI: 10.1016/j.jaci.2019.04.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/04/2019] [Accepted: 04/05/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Harald Renz
- Institute of Laboratory Medicine, Universities of Giessen, and the Marburg Lung Center (UGMLC), Philipps-Universität Marburg, German Center for Lung Research (DZL), Marburg, Germany.
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Forno E, Wang T, Qi C, Yan Q, Xu CJ, Boutaoui N, Han YY, Weeks DE, Jiang Y, Rosser F, Vonk JM, Brouwer S, Acosta-Perez E, Colón-Semidey A, Alvarez M, Canino G, Koppelman GH, Chen W, Celedón JC. DNA methylation in nasal epithelium, atopy, and atopic asthma in children: a genome-wide study. THE LANCET RESPIRATORY MEDICINE 2018; 7:336-346. [PMID: 30584054 DOI: 10.1016/s2213-2600(18)30466-1] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 10/26/2018] [Accepted: 10/30/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND Epigenetic mechanisms could alter the airway epithelial barrier and ultimately lead to atopic diseases such as asthma. We aimed to identify DNA methylation profiles that are associated with-and could accurately classify-atopy and atopic asthma in school-aged children. METHODS We did a genome-wide study of DNA methylation in nasal epithelium and atopy or atopic asthma in 483 Puerto Rican children aged 9-20 years, recruited using multistage probability sampling. Atopy was defined as at least one positive IgE (≥0·35 IU/mL) to common aeroallergens, and asthma was defined as a physician's diagnosis plus wheeze in the previous year. Significant (false discovery rate p<0·01) methylation signals were correlated with gene expression, and top CpGs were validated by pyrosequencing. We then replicated our top methylation findings in a cohort of 72 predominantly African American children, and in 432 children from a European birth cohort. Next, we tested classification models based on nasal methylation for atopy or atopic asthma in all cohorts. FINDINGS DNA methylation profiles were markedly different between children with (n=312) and without (n=171) atopy in the Puerto Rico discovery cohort, recruited from Feb 12, 2014, until May 8, 2017. After adjustment for covariates and multiple testing, we found 8664 differentially methylated CpGs by atopy, with false discovery rate-adjusted p values ranging from 9·58 × 10-17 to 2·18 × 10-22 for the top 30 CpGs. These CpGs were in or near genes relevant to epithelial barrier function, including CDHR3 and CDH26, and in other genes related to airway epithelial integrity and immune regulation, such as FBXL7, NTRK1, and SLC9A3. Moreover, 28 of the top 30 CpGs replicated in the same direction in both independent cohorts. Classification models of atopy based on nasal methylation performed well in the Puerto Rico cohort (area under the curve [AUC] 0·93-0·94 and accuracy 85-88%) and in both replication cohorts (AUC 0·74-0·92, accuracy 68-82%). The models also performed well for atopic asthma in the Puerto Rico cohort (AUC 0·95-1·00, accuracy 88%) and the replication cohorts (AUC 0·82-0·88, accuracy 86%). INTERPRETATION We identified specific methylation profiles in airway epithelium that are associated with atopy and atopic asthma in children, and a nasal methylation panel that could classify children by atopy or atopic asthma. Our findings support the feasibility of using the nasal methylome for future clinical applications, such as predicting the development of asthma among wheezing infants. FUNDING US National Institutes of Health.
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Affiliation(s)
- Erick Forno
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Ting Wang
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Cancan Qi
- Department of Pediatric Pulmonology and Pediatric Allergy, Beatrix Children's Hospital, Groningen, Netherlands; GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Qi Yan
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Cheng-Jian Xu
- Department of Pediatric Pulmonology and Pediatric Allergy, Beatrix Children's Hospital, Groningen, Netherlands; GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Nadia Boutaoui
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Yueh-Ying Han
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Daniel E Weeks
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Yale Jiang
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; School of Medicine, Tsinghua University, Beijing, China
| | - Franziska Rosser
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Judith M Vonk
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Sharon Brouwer
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, Netherlands; Department of Pathology and Medical Biology, Experimental Pulmonology and Inflammation Research, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Edna Acosta-Perez
- Behavioral Sciences Research Institute of Puerto Rico, Medical Science Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - Angel Colón-Semidey
- Department of Pediatrics, Medical Science Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - María Alvarez
- Department of Pediatrics, Medical Science Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - Glorisa Canino
- Behavioral Sciences Research Institute of Puerto Rico, Medical Science Campus, University of Puerto Rico, San Juan, Puerto Rico
| | - Gerard H Koppelman
- Department of Pediatric Pulmonology and Pediatric Allergy, Beatrix Children's Hospital, Groningen, Netherlands; GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Wei Chen
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Juan C Celedón
- Division of Pulmonary Medicine, Children's Hospital of Pittsburgh of UPMC, Pittsburgh, PA, USA; Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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Chronic asthma-induced behavioral and hippocampal neuronal morphological changes are concurrent with BDNF, cofilin1 and Cdc42/RhoA alterations in immature mice. Brain Res Bull 2018; 143:194-206. [PMID: 30227235 DOI: 10.1016/j.brainresbull.2018.09.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 09/03/2018] [Accepted: 09/11/2018] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Recent studies have found that persistent hypoxia caused by chronic asthma, especially during childhood, affects the development and function of the brain, but the mechanism is unclear. In the present study, BDNF and its signal pathway was investigated in mediating chronic asthma induced-neuronal changes that lead to behavior alterations. METHODS The chronic asthma model was induced by sensitization with ovalbumin for more than 9 weeks in immature mice. Morris water maze test (MWMT), open field test (OFT) and elevated plus maze test (EPMT) were used to conduct behavioral evaluation. Neuronal morphology in hippocampal CA1, CA3 and DG was assessed using ImageJ's Sholl plugin and RESCONSTRUCT software. BDNF signaling pathway related molecules was determined by Western blotting. RESULTS Chronic asthma does affect the behavioral performances of immature mice evaluated in MWMT, OFT, and EPMT. The analysis by three-dimensional reconstruction software found that following the behavioral alteration of asthmatic mice, dendritic changes also occurred in hippocampal neurons, including shortened dendrite length, significantly reduced number of dendritic branches, decreased density of dendritic spines, and reduced percentage of functional dendritic spine types. At the same time, by immunofluorescence and western blotting, we also found that alterations in dendritic morphology were consistent with activation of cofilin1 and changes in BDNF-Cdc42/RhoA levels. Some of the changes mentioned above can be alleviated by intranasal administration of budesonide. CONCLUSION Our data suggest that response similar to nicotine withdrawal or/and hypoxia induced by childhood chronic asthma enhances the BDNF-Cdc42/RhoA signaling pathway and activates cofilin1, leading to the remodeling of actin, causing the loss of dendritic spines and atrophy of dendrites, eventually resulting in behavioral alterations.
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Sherkawy MM, Abo-Youssef AM, Salama AAA, Ismaiel IE. Fluoxetine protects against OVA induced bronchial asthma and depression in rats. Eur J Pharmacol 2018; 837:25-32. [PMID: 30145150 DOI: 10.1016/j.ejphar.2018.08.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 08/17/2018] [Accepted: 08/21/2018] [Indexed: 10/28/2022]
Abstract
Depression is very common in asthmatic patients and may increases risk for morbidity and mortality. The present work aimed to investigate the protective effect of fluoxetine, on behavioral and biochemical changes, associated with ovalbumin (OVA) - induced bronchial asthma and depression in rats. Rats were sensitized with intraperitoneal administration of OVA plus aluminum hydroxide for 3 consecutive days then at day 11 followed by OVA intranasal challenge at days 19, 20, 21. Rats were either pretreated with dexamethasone, fluoxetine10mg/kg or fluoxetine 20 mg/kg. At the end of the experiment, various tests were performed, including open field, forced swimming and respiratory function tests. Blood was drawn for serum IgE detection. Finally, rats were euthanized, brain-derived neurotrophic factor (BDNF) was estimated in bronchoalveolar lavage (BAL) fluid and lung content of reduced glutathione (GSH), superoxide dismutase (SOD), tumor necrosis factor-alpha (TNF-α) and interleukin 4 (IL-4) were determined. Histopathological study was also performed. The results showed that fluoxetine significantly ameliorated OVA- induced biochemical and behavioral changes. Fluoxetine may protect against OVA-induced asthma and depression in rats. This effect may be mediated at least in part by its antioxidant, anti-inflammatory and immunosuppressant effect.
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Affiliation(s)
- Marwa M Sherkawy
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
| | - Amira M Abo-Youssef
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
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Stepanyan A, Zakharyan R, Simonyan A, Tsakanova G, Arakelyan A. Involvement of polymorphisms of the nerve growth factor and its receptor encoding genes in the etiopathogenesis of ischemic stroke. BMC MEDICAL GENETICS 2018; 19:33. [PMID: 29499660 PMCID: PMC5834891 DOI: 10.1186/s12881-018-0551-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 02/23/2018] [Indexed: 11/25/2022]
Abstract
Background Despite the important role of the nerve growth factor in the survival and maintenance of neurons in ischemic stroke, data regarding the relationships between variations in the encoding gene and stroke are lacking. In the present study, we evaluated the association of the functional polymorphisms in NGF (rs6330) and NGFR (rs2072446 and rs734194) genes with ischemic stroke in an Armenian population. Methods In total, 370 unrelated individuals of Armenian nationality were enrolled in this study. Genomic DNA samples of patients and healthy controls were genotyped using polymerase chain reaction with sequence-specific primers. Results The results obtained indicate that the minor allele of rs6330 (Pcorr = 2.4E-10) and rs2072446 (Pcorr = 0.02) are significantly overrepresented in stroke group, while the minor allele of rs734194 (Pcorr = 8.5E-10) was underrepresented in diseased subjects. Single nucleotide polymorphisms in NGF gene (rs6330) and NGFR gene (rs2072446 and rs734194) are associated with the disease. Furthermore, it was shown that the carriage of the NGF rs6330*T minor allele is associated with increased infarct volume and higher risk of recurrent stroke. Conclusions In conclusion, our findings suggest that the NGF rs6330*T and NGFR rs2072446*T minor alleles might be nominated as a risk factor for developing ischemic stroke and NGFR rs734194*G minor allele as a protective against this disease at least in Armenian population.
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Affiliation(s)
- Ani Stepanyan
- Institute of Molecular Biology NAS RA, 7 Hasratyan Str, 0014, Yerevan, Armenia.
| | - Roksana Zakharyan
- Institute of Molecular Biology NAS RA, 7 Hasratyan Str, 0014, Yerevan, Armenia
| | - Arsen Simonyan
- Hospital and Polyclinic №2 CJSC, 54 Aram Str, 0002, Yerevan, Armenia
| | - Gohar Tsakanova
- Institute of Molecular Biology NAS RA, 7 Hasratyan Str, 0014, Yerevan, Armenia
| | - Arsen Arakelyan
- Institute of Molecular Biology NAS RA, 7 Hasratyan Str, 0014, Yerevan, Armenia
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Abstract
PURPOSE OF REVIEW Asthma is a chronic airway disease that affects more than 300 million people worldwide. Current treatment focuses on symptomatic relief by temporally dampening inflammation and relaxing the airway. Novel combative strategies against asthma and hopefully a cure are yet to be developed. The goal of this review is to summarize recent literature on neurotrophins (NTs) in experimental models and clinical settings of asthma research. RECENT FINDINGS We highlight studies of early phases of asthma that collectively reveal a profound impact of elevated NT levels following initial detrimental insults on long-term airway dysfunction. We hope this review will foster insights into the complex interaction between NTs, nerves, immune cells, and airway structural cells during a critical time window of development and disease susceptibility. Future studies are required to better understand the role of NTs in asthma pathophysiology and to evaluate whether NTs and their receptors may serve as new drug targets.
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Affiliation(s)
- Juliana Barrios
- The Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Xingbin Ai
- Division of Pulmonary and Critical Care Medicine, Brigham & Women's Hospital, Boston, MA, 02115, USA.
- Pulmonary and Critical Care Medicine, Brigham & Women's Hospital, Thorn Building, Rm. 905, 75 Francis Street, Boston, MA, 02115, USA.
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18
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Li N, Duan G, Sun J, Guo S, Wang Q, Zheng H, Wang C, Zhu C, Liu Y, Zhang X. Associations between single-nucleotide polymorphisms in the NTRK1 gene and basal pain sensitivity in young Han Chinese women. Neurosci Lett 2018; 662:312-317. [DOI: 10.1016/j.neulet.2017.10.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 10/13/2017] [Accepted: 10/16/2017] [Indexed: 02/06/2023]
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Knipping K, Knippels LMJ, Dupont C, Garssen J. Serum biomarkers for allergy in children. Pediatr Allergy Immunol 2017; 28:114-123. [PMID: 27590735 DOI: 10.1111/pai.12649] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/01/2016] [Indexed: 01/09/2023]
Abstract
A large number of studies investigating various biomarkers for allergy have been published over the past decades. The aim of this review was to evaluate these biomarkers on their diagnostic and/or predictive value. To this date, no single or specific biomarker for allergy has been identified. As allergy is not one disease, but a collection of a number of allergic conditions, it is more plausible a combination of clinical history, clinical readouts, and diagnostic markers will be needed.
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Affiliation(s)
- Karen Knipping
- Nutricia Research, Utrecht, the Netherlands.,Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands
| | - Léon M J Knippels
- Nutricia Research, Utrecht, the Netherlands.,Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands
| | | | - Johan Garssen
- Nutricia Research, Utrecht, the Netherlands.,Division of Pharmacology, Faculty of Science, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, the Netherlands
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Aravamudan B, Thompson MA, Pabelick CM, Prakash YS. Mechanisms of BDNF regulation in asthmatic airway smooth muscle. Am J Physiol Lung Cell Mol Physiol 2016; 311:L270-9. [PMID: 27317689 DOI: 10.1152/ajplung.00414.2015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 06/09/2016] [Indexed: 12/17/2022] Open
Abstract
Brain-derived neurotrophic factor (BDNF), a neurotrophin produced by airway smooth muscle (ASM), enhances inflammation effects on airway contractility, supporting the idea that locally produced growth factors influence airway diseases such as asthma. We endeavored to dissect intrinsic mechanisms regulating endogenous, as well as inflammation (TNF-α)-induced BDNF secretion in ASM of nonasthmatic vs. asthmatic humans. We focused on specific Ca(2+) regulation- and inflammation-related signaling cascades and quantified BDNF secretion. We find that TNF-α enhances BDNF release by ASM cells, via several mechanisms relevant to asthma, including transient receptor potential channels TRPC3 and TRPC6 (but not TRPC1), ERK 1/2, PI3K, PLC, and PKC cascades, Rho kinase, and transcription factors cAMP response element binding protein and nuclear factor of activated T cells. Basal BDNF expression and secretion are elevated in asthmatic ASM and increase further with TNF-α exposure, involving many of these regulatory mechanisms. We conclude that airway BDNF secretion is regulated at multiple levels, providing a basis for autocrine effects of BDNF under conditions of inflammation and disease, with potential downstream influences on contractility and remodeling.
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Affiliation(s)
| | | | - Christina M Pabelick
- Departments of Anesthesiology, Mayo Clinic, Rochester, Minnesota; and Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
| | - Y S Prakash
- Departments of Anesthesiology, Mayo Clinic, Rochester, Minnesota; and Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
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Association between Val66Met polymorphisms in brain-derived neurotrophic factor gene and asthma risk: a meta-analysis. Inflamm Res 2015; 64:875-83. [PMID: 26289094 DOI: 10.1007/s00011-015-0869-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 08/03/2015] [Accepted: 08/11/2015] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE The Val66Met polymorphisms in brain-derived neurotrophic factor (BDNF) gene have been reported to be associated with asthma risk, while the results are inconclusive. Considering a single study may lack the power to provide reliable conclusion, we performed a meta-analysis to investigate the association between the Val66Met polymorphisms and asthma susceptibility. METHODS A comprehensive literature search of PubMed, Embase, China National Knowledge Infrastructure (CNKI) and Wanfang databases was conducted before February 12, 2015. The pooled odds ratio (OR) with 95 % confidence intervals (CIs) were calculated. RESULTS Six eligible studies with a total of 3501 subjects were finally included in this meta-analysis. Overall, a significantly increased risk was detected in the Val66Met G allele (G vs. A: OR 1.33, 95 % CI 1.19-1.49, P = 5.61E-07; GG vs. GA + AA: OR 1.48, 95 % CI 1.20-1.83, P = 3.14E-04; GG vs. GA: OR 1.48, 95 % CI 1.17-1.89, P = 0.001; GG vs. AA: OR 1.62, 95 % CI 1.20-2.19, P = 0.002). Moreover, stratification by ethnicity indicated marked association between the Val66Met G allele and asthma risk in Caucasians (G vs. A: OR 1.29, 95 % CI 1.12-1.49, P = 0.001; GG + GA vs. AA: OR 1.59, 95 % CI 1.03-2.46, P = 0.039; GG vs. GA + AA: OR 1.32, 95 % CI 1.11-1.57, P = 0.001; GG vs. GA: OR 1.28, 95 % CI 1.07-1.53, P = 0.007; GG vs. AA: OR 1.72, 95 % CI 1.11-2.68, P = 0.015). CONCLUSION Our present meta-analysis suggests that the Val66Met polymorphisms in BDNF gene are potentially associated with asthma risk in Caucasians. Further well-designed case-control studies with larger sample size and more ethnic groups are needed to confirm these conclusions.
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Jesenak M, Babusikova E, Evinova A, Banovcin P, Dobrota D. Val66Met polymorphism in the BDNF gene in children with bronchial asthma. Pediatr Pulmonol 2015; 50:631-7. [PMID: 24863266 DOI: 10.1002/ppul.23065] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 04/21/2014] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Bronchial asthma is a chronic respiratory disease characterized by airway inflammation. There is increasing evidence that neurotrophins play an important role in the development and maintenance of neurogenic airway inflammation in chronic allergic diseases. WORKING HYPOTHESIS Brain-derived neurotrophic factor (BDNF) is a member of the neurotrophin family and has several important functions in the airways. There are only a few reports on the association between genetic variations in the BDNF gene and various allergic diseases, and the results are generally conflicting. Therefore, we aimed to study the functional polymorphism Val66Met (also called rs6265 or G196A) in the BDNF gene in a group of asthmatic children and healthy controls. STUDY DESIGN, PATIENT-SELECTION, AND METHODOLOGY We studied 248 asthmatic patients (aged 12.28 ± 0.24 years) and 249 healthy children (aged 13.14 ± 0.48 years). Analysis of the Val66Met polymorphism of the BDNF gene was performed by polymerase chain reaction (PCR) and PCR products were digested by PmlI. RESULTS The prevalence of the Val66Met polymorphisms (Val/Val, Val/Met, and Met/Met) was 61.7%, 33.5%, and 4.8% in asthmatics, respectively, and 47.0%, 51.8%, and 1.2% in healthy subjects, respectively. We observed a significant association of the Met/Met variant genotype with asthmatics (OR = 4.17, 95% CI = 1.16-14.96, P = 0.018). The Val/Met genotype was protective against bronchial asthma (OR = 0.69, 95% CI = 0.48-0.99, P = 0.045), especially in girls (OR = 0.34, 95% CI = 0.20-0.59, P = 0.001). CONCLUSION Specific BDNF gene polymorphism may contribute to bronchial asthma susceptibility. Our study suggested the positive association between selected functional BDNF polymorphism (rs6265) and asthma in children.
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Affiliation(s)
- Milos Jesenak
- Department of Paediatrics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Eva Babusikova
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Andrea Evinova
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Peter Banovcin
- Department of Paediatrics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
| | - Dusan Dobrota
- Department of Medical Biochemistry, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Martin, Slovakia
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