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Li Y, Yu C, Li P, Qian X, Song P, Gao X. A Preliminary Report on the Correlation Between Nasal Function and the Different Phases of the Nasal Cycle. EAR, NOSE & THROAT JOURNAL 2024; 103:339-343. [PMID: 34463151 DOI: 10.1177/01455613211041788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE To explore whether the different phases of the nasal cycle have a significant effect on nasal temperature, the nasal mucosal clearance rate, and levels of nasal nitric oxide (nNO) and to investigate the correlation between these nasal conditions. METHODS The study participants were divided into 2 groups: the control group and the rhinitis group. The participants' nasal temperature, cilia clearance rate, and nNO levels were measured during different phases of the nasal cycle (the congestion phase and decongestion phase) in the control group and before and after undergoing inferior turbinate ablation in the rhinitis group. RESULTS The temperature of the nasal cavity in the control group was significantly higher in the congestion phase than in the decongestion phase (P = .0025), while in the rhinitis group, the temperature of the nasal cavity decreased significantly after inferior turbinate ablation (P = .001). In the control group, the nasal mucosa clearance time was significantly shorter in the congestion phase than in the decongestion phase (P = .001), and in the rhinitis group, the clearance time of the nasal mucosa was significantly shortened after the operation (P = .0025). In the control group, the levels of nNO were significantly higher in the congestion phase than in the decongestion phase (P = .025), while in the rhinitis group, nNO levels decreased significantly after the operation (P = .005). CONCLUSION The function of the nasal cavity changes in different phases of the nasal cycle. Therefore, when evaluating the impact of various factors on nasal function, factors associated with the nasal cycle should also be considered. Inferior turbinate plasma ablation can improve the ciliary function of the nasal mucosa, reduce the temperature of the nasal cavity, and reduce nNO levels.
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Affiliation(s)
- Yihan Li
- Department of Otolaryngology, HUADONG Sanatorium, Wuxi, Jiangsu Province, China
| | - Chenjie Yu
- Department of Otorhinolaryngology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
| | - Peizhong Li
- Department of Otolaryngology, Head and Neck Surgery, The No 1 Hospital of Huaian, Nanjing Medical University, Nanjing, China
| | - Xiaoyun Qian
- Department of Otorhinolaryngology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
| | - Panpan Song
- Department of Otorhinolaryngology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
| | - Xia Gao
- Department of Otorhinolaryngology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu Provincial Key Medical Discipline (Laboratory), Nanjing, China
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Rebrova S, Emelyanov A, Sergeeva G, Korneenkov A. Markers of eosinophilic airway inflammation in patients with asthma and allergic rhinitis. Allergy Asthma Proc 2024; 45:e9-e13. [PMID: 38151732 DOI: 10.2500/aap.2024.45.230077] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Background: Measurement of airway inflammation is an important step to determine phenotype of asthma and allergic rhinitis (AR). Objective: To assess the level of nitric oxide in exhaled air (FeNO), nasal fraction of nitric oxide (nasal NO), their relationship with clinical control and blood eosinophils in patients with steroid-naive mild and moderate asthma and AR. Methods: One hundred forty-seven patients (65 men), ages 26-49.5 years (mean age, 32 years) with AR (n = 81) or AR and concomitant asthma (n = 46) and 20 healthy subjects were included in a single-center cohort study. All the patients underwent spirometry with reversibility test. Control of asthma and AR was assessed by using the Asthma Control Questionnaire and the visual analog scale, respectively. Levels of FeNO and nasal NO were measured by chemiluminescent analyzer, peripheral blood eosinophils were counted by automatic analyzer. Results: The FeNO level was significantly elevated in the patients with asthma and concomitant AR compared with the healthy subjects and was associated with control of both asthma and AR. There was no correlation between nasal NO and control of AR. Receiver operating characteristic analysis revealed that the level of eosinophils of 150 cells/μL may be a cutoff for lower airway eosinophilic inflammation. Blood eosinophils count was unable to distinguish eosinophilic and non-eosinophilic upper airway inflammation. Conclusion: We confirm that FeNO but not nasal NO is a marker of eosinophilic airway inflammation in patients with mild-moderate steroid-naive AR and concomitant asthma. A blood eosinophil level of ≥150 cells/µL may be a simple marker of eosinophilic airway inflammation in patients with asthma. However, its low specificity requires repeated measurements and use in combination with other biomarkers.
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Affiliation(s)
- Svetlana Rebrova
- From the Saint-Petersburg Scientific Research Institute of Ear, Throat, Nose and Speech, Saint-Petersburg, Russia, and
| | - Alexander Emelyanov
- Department of Respiratory Medicine, North-Western Medical University named I.I. Mechnikov, Saint-Petersburg, Russia
| | - Galina Sergeeva
- Department of Respiratory Medicine, North-Western Medical University named I.I. Mechnikov, Saint-Petersburg, Russia
| | - Alexey Korneenkov
- From the Saint-Petersburg Scientific Research Institute of Ear, Throat, Nose and Speech, Saint-Petersburg, Russia, and
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Paternò S, Pisani L, Zanconato S, Ferraro VA, Carraro S. Role of Nasal Nitric Oxide in Primary Ciliary Dyskinesia and Other Respiratory Conditions in Children. Int J Mol Sci 2023; 24:16159. [PMID: 38003348 PMCID: PMC10671569 DOI: 10.3390/ijms242216159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/02/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Nitric oxide (NO) is produced within the airways and released with exhalation. Nasal NO (nNO) can be measured in a non-invasive way, with different devices and techniques according to the age and cooperation of the patients. Here, we conducted a narrative review of the literature to examine the relationship between nNO and some respiratory diseases with a particular focus on primary ciliary dyskinesia (PCD). A total of 115 papers were assessed, and 50 were eventually included in the review. nNO in PCD is low (below 77 nL/min), and its measurement has a clear diagnostic value when evaluated in a clinically suggestive phenotype. Many studies have evaluated the role of NO as a molecular mediator as well as the association between nNO values and genotype or ciliary function. As far as other respiratory diseases are concerned, nNO is low in chronic rhinosinusitis and cystic fibrosis, while increased values have been found in allergic rhinitis. Nonetheless, the role in the diagnosis and prognosis of these conditions has not been fully clarified.
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Affiliation(s)
| | | | | | | | - Silvia Carraro
- Unit of Pediatric Allergy and Respiratory Medicine, Women’s and Children’s Health Department, University of Padova, 35128 Padova, Italy; (S.P.); (L.P.); (S.Z.); (V.A.F.)
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Brindisi G, Gori A, Anania C, Martinelli I, Capponi M, De Castro G, Zicari AM. Subcutaneous Immunotherapy (SCIT) with the New Polymerized Molecular Allergoid Alt a1: A Pilot Study in Children with Allergic Rhinitis Sensitized to Alternaria Alternata. J Clin Med 2023; 12:4327. [PMID: 37445362 DOI: 10.3390/jcm12134327] [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: 05/16/2023] [Revised: 06/22/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND We followed the effects of a new SCIT with a chemically polymerized allergen Alt a1, evaluating the trend of clinical and functional parameters in an observational-prospective study. METHODS 42 children with AR and intermittent asthma sensitized to A.A.: 17 patients started SCIT (Modigoid®), and 25 continued symptomatic therapy. At the initial visit (T0), all patients performed total IgE (tIgE) and specific IgE (sIgE) for Alt a1, nasal nitric oxide (nFeNo), nasal cytology, anterior active rhinomanometry (AAR) and spirometry. After 24 months (T1), they repeated the same procedures as in T0. RESULTS Patients treated with Modigoid presented a statistically significant (p < 0.001) reduction of nFeNO (T0:1651.06 ± 149.18; T1: 1394.12 ± 108.98), tIgE (T0: 311.48 ± 144.18; T1: 164.73 ± 50.69), sIgE for Alt a1 (T0: 28.59 ± 12.69; T1: 19.54 ± 7.37), an improvement of nasal airflow (T0: 71.62 ± 8.66; T1: 95.12 ± 5.91), nasal eosinophils (T0: 20.59 ± 2.35; T1: 14.88 ± 1.65) and FEV1 (T0: 95.58 ± 7.91; T1: 116.64 ± 5.94). CONCLUSIONS The new SCIT for Alt a1 significantly improves AR symptoms from a subjective, objective point of view and laboratory and functional parameters.
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Affiliation(s)
- Giulia Brindisi
- Department of Mother-Child, Urological Science, Sapienza University of Rome, 00161 Rome, Italy
- Department of Translational and Precision Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Alessandra Gori
- Department of Mother-Child, Urological Science, Sapienza University of Rome, 00161 Rome, Italy
| | - Caterina Anania
- Department of Mother-Child, Urological Science, Sapienza University of Rome, 00161 Rome, Italy
| | - Ivana Martinelli
- Department of Mother-Child, Urological Science, Sapienza University of Rome, 00161 Rome, Italy
| | - Martina Capponi
- Department of Mother-Child, Urological Science, Sapienza University of Rome, 00161 Rome, Italy
| | - Giovanna De Castro
- Department of Mother-Child, Urological Science, Sapienza University of Rome, 00161 Rome, Italy
| | - Anna Maria Zicari
- Department of Mother-Child, Urological Science, Sapienza University of Rome, 00161 Rome, Italy
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Lundberg JO, Weitzberg E. Nitric oxide signaling in health and disease. Cell 2022; 185:2853-2878. [DOI: 10.1016/j.cell.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/01/2022] [Accepted: 06/06/2022] [Indexed: 10/16/2022]
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Parisi GF, Manti S, Papale M, Amato M, Licari A, Marseglia GL, Leonardi S. Nasal Nitric Oxide and Nasal Cytology as Predictive Markers of Short-Term Sublingual Allergen-Specific Immunotherapy Efficacy in Children with Allergic Rhinitis. Am J Rhinol Allergy 2021; 36:323-329. [PMID: 34866408 DOI: 10.1177/19458924211060592] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Few studies have been conducted on the short-term response to sublingual immunotherapy (SLIT). OBJECTIVE The purpose of our experimental trial was to evaluate if two markers such as nasal nitric oxide (nNO) and nasal cytology could be useful to identify a precocious clinical efficacy of SLIT treatment. METHODS We enrolled 34 children aged 6 to 14 years old with diagnosis of allergic rhinitis (AR) and documented sensitization towards house dust mites. We started allergoid-monomeric tablets immunotherapy along with any conventional therapy for AR and we evaluated at baseline (T0), after one (T1), two (T2), three (T3), and six months (T6) the effects of the treatment through the study of: i) a visual analogue scale (VAS 1-10); ii) measurement of nNO; iii) measurement of FeNO; iv) nasal cytology; v) spirometry; and vi) evaluation of any conventional therapy. RESULTS We observed an improvement in symptoms evaluated by global VAS (T0 vs. T6: 47.13 vs. 17.57; p < .05) and a statistically significant reduction of nNO (1035.2 ± 956.08 vs. 139.2 ± 59.01; p < .05). In this case, significance was reached when the patients completed the 6 months of treatment. Cytological evaluation revealed significant reduction in nasal eosinophils (T0 vs. T6: 87% vs. 16%; p < .01). Moreover, at T0, 56% of patients had also neutrophils that were reduced up to the 8% at T6 (p < .05). CONCLUSIONS Our data confirm the effectiveness of SLIT treatment from a clinical perspective and identifies two biomarkers, such as nNO and nasal cytology, as predictive of treatment efficacy in the short term.
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Li YH, Yu CJ, Qian XY, Song PP, Gao X. The correlation between FeNO and nNO in allergic rhinitis and bronchial asthma. Medicine (Baltimore) 2021; 100:e27314. [PMID: 34596130 PMCID: PMC8483846 DOI: 10.1097/md.0000000000027314] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/04/2021] [Indexed: 01/05/2023] Open
Abstract
This study aimed to evaluate the correlation between fractional exhaled nitric oxide (FeNO) and nasal nitric oxide (nNO) in allergic rhinitis (AR) and patients with or without bronchial asthma (BA).A total of 90 patients who were diagnosed with persistent AR (AR group, n = 30), BA (BA group, n = 30), or allergic rhinitis with bronchial asthma (AR-BA) (AR-BA group, n = 30), were enrolled in this study, along with 30 healthy adult volunteers (control group, n = 30). The participants were further divided into 2 groups based on the results of a skin-prick test (SPT): a highly atopic group (SPT = 3+ and above) and a moderately atopic group (SPT = 2+ and below). All participants underwent FeNO and nNO measurement, an absolute blood eosinophil count, total serum immunoglobulin measurement, and horizontal baseline lung capacity determination.The results showed that the FeNO levels in the 3 observation groups were significantly higher than those in the control group (P < .01), and in the BA group they were significantly higher than in the AR-BA group (P < .01). The levels of nNO in both the AR group and the AR-BA group were higher than those in the control group and the BA group (P < .01), but there was no significant difference between the AR group and the AR-BA group (P > .05). The levels of nNO in the BA group were also significantly different from those in the control group (P < .01).FeNO and nNO are positively correlated with the degree of AR in patients with BA; therefore, nNO levels can be used as an inflammatory marker of AR in patients with BA. FeNO can also be used as an inflammatory marker of AR in patients complicated with BA as a warning indicator of asthma.
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Affiliation(s)
- Yi-Han Li
- Department of Otolaryngology, HUADONG Sanatorium, Wuxi, Jiangsu Province, China
| | - Chen-Jie Yu
- Department of Otolaryngology, Head and Neck Surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, China
| | - Xiao-Yun Qian
- Department of Otolaryngology, Head and Neck Surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, China
| | - Pan-Pan Song
- Department of Otolaryngology, Head and Neck Surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, China
| | - Xia Gao
- Department of Otolaryngology, Head and Neck Surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, China
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Brindisi G, De Vittori V, De Nola R, Di Mauro A, De Castro G, Baldassarre ME, Cicinelli E, Cinicola B, Duse M, Zicari AM. The Role of Nasal Nitric Oxide and Anterior Active Rhinomanometry in the Diagnosis of Allergic Rhinitis and Asthma: A Message for Pediatric Clinical Practice. J Asthma Allergy 2021; 14:265-274. [PMID: 33790581 PMCID: PMC8006956 DOI: 10.2147/jaa.s275692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 12/05/2020] [Indexed: 12/14/2022] Open
Abstract
Background Allergic rhinitis (AR) and asthma are two common atopic diseases, often associated with a common ethiopathogenesis characterized by a Th2 inflammatory response with the release of many biomarkers, such as nitric oxide (NO). Purpose To evaluate and compare inflammatory (nFeNO and eFeNO) and functional (mNF and FEV1) parameters in AR children with or without asthma in comparison to controls. Secondly, we aimed to identify nFeNO cut-off values and verify their reliability to predict the presence of rhinitis or asthma alone or in combination. Patients and Methods We enrolled 160 children (6-12 years of age) with AR and/or asthma divided into four groups: controls, AR, asthma, and AR + asthma. All children underwent the following inflammatory and functional measurements: nFeNO, eFeNO, mNF and FEV1. Results We observed that levels of nFeNO were extremely higher in children with AR and even more in those with AR + asthma in respect to controls. Notably, all the pathological conditions, especially AR + asthma, showed significantly lower values of mNF compared to healthy children. A negative correlation linked mNF and nFeNO. Then, we found eFeNO values significantly higher in all the pathological groups compared to controls, with major values of this marker in patients affected by asthma and AR + asthma, as well as FEV1 values significantly lower in all the disease groups, especially in children with asthma and AR+ asthma. ROC curve analysis showed that nFeNO was a great predictor for rhinitis alone or with asthma, revealing an accurate cut-off of 662 ppb. Conclusion nFeNO measurement is non-invasive, easy to perform, economic and a valuable test in case of AR alone or in association with asthma. Thus, it should be used in patients with rhinitis, together with anterior active rhinomanometry (AAR) to diagnose and estimate the degree of nasal obstruction but also in children with asthma to assess their nasal involvement and improve the therapeutic management.
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Affiliation(s)
- Giulia Brindisi
- Pediatrics Department, Umberto I Hospital, Sapienza University, Rome, 00161, Italy
| | - Valentina De Vittori
- Pediatrics Department, Umberto I Hospital, Sapienza University, Rome, 00161, Italy
| | - Rosalba De Nola
- Department of Biomedical Science and Human Oncology, Gynecology and Obstetrics Section, "Aldo Moro" University of Bari, Bari, 70124, Italy.,Department of Tissues and Organs Transplantation and Cellular Therapies, "Aldo Moro" University of Bari, Bari, 70124, Italy
| | - Antonio Di Mauro
- Department of Biomedical Sciences and Human Oncology-Neonatology and Neonatal Intensive Care Unit, "Aldo Moro" University of Bari, Bari, 70124, Italy
| | - Giovanna De Castro
- Pediatrics Department, Umberto I Hospital, Sapienza University, Rome, 00161, Italy
| | - Maria Elisabetta Baldassarre
- Department of Biomedical Sciences and Human Oncology-Neonatology and Neonatal Intensive Care Unit, "Aldo Moro" University of Bari, Bari, 70124, Italy
| | - Ettore Cicinelli
- Department of Biomedical Science and Human Oncology, Gynecology and Obstetrics Section, "Aldo Moro" University of Bari, Bari, 70124, Italy
| | - Bianca Cinicola
- Pediatrics Department, Umberto I Hospital, Sapienza University, Rome, 00161, Italy
| | - Marzia Duse
- Pediatrics Department, Umberto I Hospital, Sapienza University, Rome, 00161, Italy
| | - Anna Maria Zicari
- Pediatrics Department, Umberto I Hospital, Sapienza University, Rome, 00161, Italy
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Nasal Nitric Oxide Measurement in Primary Ciliary Dyskinesia. A Technical Paper on Standardized Testing Protocols. Ann Am Thorac Soc 2021; 17:e1-e12. [PMID: 31770003 DOI: 10.1513/annalsats.201904-347ot] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Nasal nitric oxide concentrations are extremely low in primary ciliary dyskinesia (PCD), and measurement of this nasal gas is recommended as a PCD diagnostic test in cooperative patients aged 5 years and older. However, nasal nitric oxide measurements must be performed with chemiluminescence analyzers using a standardized protocol to ensure proper results, because nasal nitric oxide values can be influenced by various internal and external factors. Repeat nasal nitric oxide testing on separate visits is required to ensure that low diagnostic values are persistent and consistent with PCD. This technical paper presents the standard operating procedures for nasal nitric oxide measurement used by the PCD Foundation Clinical and Research Centers Network at various specialty centers across North America. Adherence to this document ensures reliable nasal nitric oxide testing and high diagnostic accuracy when employed in a population with appropriate clinical phenotypes for PCD.
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10
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Gostelie R, Stegeman I, Berkers G, Bittermann J, Ligtenberg-van der Drift I, van Kipshagen PJ, de Winter - de Groot K, Speleman L. The impact of ivacaftor on sinonasal pathology in S1251N-mediated cystic fibrosis patients. PLoS One 2020; 15:e0235638. [PMID: 32687499 PMCID: PMC7371187 DOI: 10.1371/journal.pone.0235638] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/19/2020] [Indexed: 12/19/2022] Open
Abstract
IMPORTANCE Sinonasal symptoms in patients suffering from cystic fibrosis can negatively influence the quality of life and sinuses can be a niche for pathogens causing infection and inflammation leading to a decrease of lung function. Ivacaftor, a potentiator of the Cystic Fibrosis Transmembrane Conductance Regulator protein, has shown improvement in pulmonary function in cystic fibrosis patients with different forms of class III gating mutations. However, the effects of ivacaftor on sinonasal pathology have hardly been studied. OBJECTIVE To determine the impact of ivacaftor therapy on sinonasal pathology in patients with cystic fibrosis with an S1251N mutation. DESIGN Prospective observational mono-center cohort study, between June 2015 and December 2016. SETTING A tertiary referral center in Utrecht, The Netherlands. PARTICIPANTS Eight patients with cystic fibrosis with an S1251N mutation, treated with the potentiator ivacaftor were investigated. EXPOSURES Ivacaftor (Kalydeco, VX-770) therapy. Computed tomography imaging of paranasal sinuses. Nasal nitric oxide concentration measurements and nasal endoscopy. MAIN OUTCOMES AND MEASURES Primary outcome is opacification of paranasal sinuses examined with computed tomography scan analysis and scaled by the modified Lund-Mackay score before and one year after treatment. Secondary outcomes are nasal nitric oxide concentration levels, sinonasal symptoms and nasal endoscopic findings before and approximately two months and in some cases one year after treatment. RESULTS Computed tomography scan analysis showed a significant decrease in opacification of the majority of paranasal sinuses comparing the opacification score per paranasal sinus before and after one year of treatment with ivacaftor. Median nasal nitric oxide levels significantly improved from 220.00 (IQR:136.00-341.18) to 462.84 (IQR:233.17-636.25) (p = 0.017) parts per billion. Likewise, the majority of sinonasal symptoms and nasal endoscopic pathology decreased or resolved at two months after the use of ivacaftor. CONCLUSION AND RELEVANCE Ivacaftor appears to improve sinonasal outcome parameters and thereby sinonasal health in patients with cystic fibrosis with an S1251N mutation.
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Affiliation(s)
- Romee Gostelie
- University Medical Center, Utrecht University, Utrecht, The Netherlands
| | - Inge Stegeman
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center, Utrecht University, Utrecht, The Netherlands
| | - Gitte Berkers
- Department of Pediatric Respiratory Medicine and Allergology, Cystic Fibrosis Center, University Medical Center, Utrecht University, Utrecht, The Netherlands
| | - Joost Bittermann
- Department of Pediatric Otorhinolaryngology, University Medical Center, Utrecht University, Utrecht, The Netherlands
| | - Ivonne Ligtenberg-van der Drift
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center, Utrecht University, Utrecht, The Netherlands
| | | | - Karin de Winter - de Groot
- Department of Pediatric Respiratory Medicine and Allergology, Cystic Fibrosis Center, University Medical Center, Utrecht University, Utrecht, The Netherlands
| | - Lucienne Speleman
- Department of Pediatric Otorhinolaryngology, University Medical Center, Utrecht University, Utrecht, The Netherlands
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Poeta M, Maglione M, Borrelli M, Santamaria F. Non-cystic fibrosis bronchiectasis in children and adolescents: Neglected and emerging issues. Pediatr Neonatol 2020; 61:255-262. [PMID: 31672477 DOI: 10.1016/j.pedneo.2019.09.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 07/16/2019] [Accepted: 09/24/2019] [Indexed: 12/14/2022] Open
Abstract
Pediatric non-cystic fibrosis (CF) bronchiectasis is characterized by endobronchial suppuration, airway neutrophilic inflammation and poor mucus clearance and is associated with persistent productive cough due to recurrent airway infections. Most recommendations are based on expert opinion or extrapolated from CF practice. The present narrative review aims to address some issues on the management of children or adolescents with non CF-bronchiectasis that still require attention, and analyze what available literature offers to reply to open questions. We focused on the potential offered by technological advances on lung disease assessment through novel chest imaging techniques and new or old pulmonary function tests. We also summarized the main novelties in the disease prevention and treatment. Finally, a novel diagnostic algorithm is proposed, that might help physicians in the daily clinical decision-making process. Future directions for research on pediatric non-CF bronchiectasis should include larger study populations and longer prospective clinical trials, as well as new clinical and laboratory endpoints to determine the underlying mechanisms of lung disease progression and support the role of new and existing treatments.
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Affiliation(s)
- Marco Poeta
- Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy
| | - Marco Maglione
- Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy
| | - Melissa Borrelli
- Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy
| | - Francesca Santamaria
- Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy.
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Galiniak S, Biesiadecki M, Aebisher D, Rachel M. Nasal nitric oxide in upper airways in children with asthma and allergic rhinitis. Adv Med Sci 2020; 65:127-133. [PMID: 31927424 DOI: 10.1016/j.advms.2019.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 07/09/2019] [Accepted: 11/18/2019] [Indexed: 12/21/2022]
Abstract
PURPOSE The aim of this study is to compare levels of nasal nitric oxide (nNO) in pediatric patients with respiratory diseases. MATERIALS AND METHODS nNO was measured by an electrochemical analyzer in 179 patients aged 7-15 with asthma, allergic rhinitis or with asthma and allergic rhinitis and in healthy children recruited from a local allergology clinic. Correlations between nNO levels and patient clinical parameters were assessed. RESULTS nNO was significantly higher in patients with allergic rhinitis (2316.3 ± 442.33 ppb, p < 0.001) as well as with asthma and allergic rhinitis (2399.9 ± 446.73 ppb, p < 0.001) compared to asthmatic and healthy children (1066.4 ± 416.75; 836.2 ± 333.47 ppb, respectively). A receiver operating characteristic curve analysis revealed that a cut-off value of 1545 ppb nNO and 1459 ppb nNO has sensitivity of 100% and specificity of 100% in distinguishing allergic rhinitis and combined asthma and allergic rhinitis from healthy subjects. A positive correlation between nNO and age and height was determined only in groups of healthy controls. We found no association between nNO level and clinical parameters including percent of eosinophils and total IgE. CONCLUSION Levels of nNO are currently measured by different analyzers and with different methods, so assessment of nNO is in need of standardization improvement to become a more reliable tool. However, because it is cheap, painless and fast, it may be helpful in combination with recognition of clinical symptoms and typical diagnostic methods, especially in estimation of inflammation.
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Affiliation(s)
| | | | - David Aebisher
- Faculty of Medicine, Rzeszów University, Rzeszów, Poland
| | - Marta Rachel
- Faculty of Medicine, Rzeszów University, Rzeszów, Poland; Allergology Outpatient Department, Provincial Hospital No 2, Rzeszow, Poland
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Wen YS, Lin CY, Yang KD, Hung CH, Chang YJ, Tsai YG. Nasal nitric oxide is a useful biomarker for acute unilateral maxillary sinusitis in pediatric allergic rhinitis: A prospective observational cohort study. World Allergy Organ J 2019; 12:100027. [PMID: 31193296 PMCID: PMC6526296 DOI: 10.1016/j.waojou.2019.100027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 03/08/2019] [Accepted: 03/15/2019] [Indexed: 12/19/2022] Open
Abstract
Background Nasal nitric oxide (nNO) could be a biomarker for nasal passage inflammation and sinus ostial patency. We have aimed to investigate the nNO concentration and the effect of antibiotic therapy in children with perennial allergic rhinitis (PAR) children with/without acute bacterial sinusitis. Methods We enrolled a cohort of 90 and 31 children with PAR, without and with acute unilateral maxillary sinusitis, and 79 normal children. Acute bacterial maxillary sinusitis was diagnosed based on clinical signs and symptoms, radiographic examination and nasal fibroendoscopy. Rhinitis control assessment test (RCAT), rhinomanometry, nNO and fractional exhaled NO (FENO) measurements were performed before and 2 weeks after antibiotic therapy. Results We found significantly higher mean nNO levels, FENO values, and total nasal resistance in children with PAR than in normal children (p < 0.05). Acute unilateral maxillary sinusitis was associated with lower lesion-side nNO levels, higher FENO values, total nasal resistance, and poor RCAT scores (p < 0.05). In multivariate analysis, age, IgE, and acute maxillary sinusitis were significant factors influencing nNO levels in children with PAR. The lesion-side nNO levels, FENO values, total nasal resistance, and RCAT scores were reversed after antibiotic therapy (p < 0.05). The lesion-side nNO levels were significantly correlated to nasal obstructive scores (r = 0.59, p < 0.05) and expiratory nasal resistance (r = -0.54, p < 0.05) in the acute maxillary sinusitis. A cut-off nNO value of 538 ppb showed 100% sensitivity and 94.9% specificity, to predict PAR from normal children. An nNO value of 462 ppb showed 100% sensitivity and 100% specificity to discriminate between the lesion-side and the unaffected sinus-side in PAR children with acute unilateral maxillary sinusitis. Conclusions We conclude that the obstruction of NO from the sinus into the nasal passage is the likely explanation for the decreased lesion-side nNO levels in acute unilateral maxillary sinusitis. nNO is a non-invasive biomarker with high sensitivity to diagnose and monitor treatment responses of PAR patients with acute rhinosinusitis. Both nNO and FENO levels return to baseline following antibiotic therapy, supporting the "one airway one disease" concept.
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Affiliation(s)
- Yung-Sung Wen
- Department of Otorhinolaryngology, Head and Neck Surgery, Changhua Christian Hospital, Changhua, Taiwan.,Department of Otorhinolaryngology, Head and Neck Surgery, Yunlin Christian Hospital, Xiluo, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Ching-Yuang Lin
- Clinical Immunological Center and College of Medicine, China Medical University Hospital, Taiwan
| | - Kuender D Yang
- Departments of Pediatrics, Mackay Memorial Hospital, and Institute of Biomedical Sciences, Mackay Medical College, Taipei, Taiwan
| | | | - Yu-Jun Chang
- Epidemiology and Biostatistics Center, Changhua Christian Hospital, Changhua, Taiwan
| | - Yi-Giien Tsai
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,School of Medicine, Kaohsiung Medical University, Taiwan.,Department of Pediatrics, Changhua Christian Children Hospital, Changhua, Taiwan
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14
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Rybnikar T, Senkerik M, Chladek J, Chladkova J, Kalfert D, Skoloudik L. Adenoid hypertrophy affects screening for primary ciliary dyskinesia using nasal nitric oxide. Int J Pediatr Otorhinolaryngol 2018; 115:6-9. [PMID: 30368395 DOI: 10.1016/j.ijporl.2018.09.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/29/2018] [Accepted: 09/13/2018] [Indexed: 12/14/2022]
Abstract
AIM In patients with primary ciliary dyskinesia (PCD), the release of nitric oxide (NO) is extremely low by epithelia of the nasopharynx and sinuses. Measurement of nasal NO (nNO) is recommended as a screening test for PCD. The study aimed to evaluate if adenoids affects nNO and may deteriorate the performance of the test. METHODS In 48 nonallergic patients between 5 and 18 years of age with chronic symptoms of nasal obstruction and indications for adenoidectomy, the measurements of nNO by chemiluminescence analyser and nasal patency by active anterior rhinomanometry were performed both before and after adenoidectomy. Adenoidal tissue size was graded during surgery under general anaesthesia using transoral endoscopy. RESULTS Patients were stratified into groups with adenoids grades 1, 2 and 3 (<1/3, 1/3-2/3 and > 2/3 of the choana and post-nasal space covered by adenoids). Before adenoidectomy, the median of nNO decreased with the increasing grade of adenoids (920, 663, and 491 ppb, P < 0.05). The rhinomanometry results were comparable and showed no correlation with nNO. Seven patients (14.6%) were incorrectly classified to have PCD based on a subthreshold value of the volume flow of nNO (FnNO < 77 nL/min). Following adenoidectomy, nNO of the grade 3 patients increased by 107 ppb (P < 0.05) and no differences were found between groups (P = 0.40). All patients had the postadenoidectomy FnNO >77 nL/min. CONCLUSIONS nNO and FnNO are reduced in nonallergic children with obstructive adenoids. Adenoid hypertrophy can potentially cause a false positive result of the test for PCD.
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Affiliation(s)
- Tomas Rybnikar
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Hradec Kralove, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
| | - Marian Senkerik
- Department of Pediatrics and Neonatology, Regional Hospital, Pardubice, Czech Republic
| | - Jaroslav Chladek
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
| | - Jirina Chladkova
- Department of Pediatrics, University Hospital Hradec Kralove, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
| | - David Kalfert
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Motol, Charles University, First Faculty of Medicine, Prague, Czech Republic.
| | - Lukas Skoloudik
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Hradec Kralove, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
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15
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Adams PS, Zahid M, Khalifa O, Feingold B, Lo CW. Low Nasal NO in Congenital Heart Disease With Systemic Right Ventricle and Postcardiac Transplantation. J Am Heart Assoc 2017; 6:JAHA.117.007447. [PMID: 29212650 PMCID: PMC5779050 DOI: 10.1161/jaha.117.007447] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background NO bioavailability has not been systematically examined in congenital heart disease (CHD). To assess NO in patients with CHD, we measured nasal NO (nNO) generated by the nasal epithelia, given blood NO is difficult to measure (half‐life, <2 ms). Given NO's role in hemodynamic regulation and the association of NO bioavailability with heart failure risk, we hypothesized NO levels may differ with varying severity of CHD physiologic characteristics. Methods and Results Six‐hundred eighteen subjects, 483 with CHD and 135 controls, had nNO measured noninvasively via the nares using American Thoracic Society/European Respiratory Society guidelines. Subjects were dichotomized as having low or normal nNO based on age‐specific cutoff values. Prevalence of low nNO was examined by various CHD physiologic feature types. Low nNO was more prevalent with CHD than controls (odds ratio, 2.28; P=0.001). A logistic regression model showed overall significance (P=0.035) for single ventricle, systemic right ventricle, ventricular dysfunction, oxygen desaturation, and heterotaxy predicting low nNO, with systemic right ventricle independently having twice the odds of low nNO (odds ratio, 2.04; P=0.014). Patients with low nNO had a higher risk of experiencing heart transplant or death (hazard ratio, 2.75; P=0.048), and heart transplant recipients (N=16) exhibited 5 times the odds of low nNO (69% versus 30%; odds ratio, 5.1; P=0.001). Conclusions Patients with CHD have increased prevalence of low nNO, with highest odds seen with systemic right ventricle and heart transplant. Further studies are needed to investigate heart failure risks in patients with CHD with left versus right systemic ventricle physiologic characteristics and utility of low nNO for predicting heart failure risk.
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Affiliation(s)
- Phillip S Adams
- Division of Pediatric Anesthesiology, Department of Anesthesiology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Maliha Zahid
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Omar Khalifa
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Brian Feingold
- Division of Pediatric Cardiology, Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Cecilia W Lo
- Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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16
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Mirra V, Werner C, Santamaria F. Primary Ciliary Dyskinesia: An Update on Clinical Aspects, Genetics, Diagnosis, and Future Treatment Strategies. Front Pediatr 2017; 5:135. [PMID: 28649564 PMCID: PMC5465251 DOI: 10.3389/fped.2017.00135] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 05/22/2017] [Indexed: 01/26/2023] Open
Abstract
Primary ciliary dyskinesia (PCD) is an orphan disease (MIM 244400), autosomal recessive inherited, characterized by motile ciliary dysfunction. The estimated prevalence of PCD is 1:10,000 to 1:20,000 live-born children, but true prevalence could be even higher. PCD is characterized by chronic upper and lower respiratory tract disease, infertility/ectopic pregnancy, and situs anomalies, that occur in ≈50% of PCD patients (Kartagener syndrome), and these may be associated with congenital heart abnormalities. Most patients report a daily year-round wet cough or nose congestion starting in the first year of life. Daily wet cough, associated with recurrent infections exacerbations, results in the development of chronic suppurative lung disease, with localized-to-diffuse bronchiectasis. No diagnostic test is perfect for confirming PCD. Diagnosis can be challenging and relies on a combination of clinical data, nasal nitric oxide levels plus cilia ultrastructure and function analysis. Adjunctive tests include genetic analysis and repeated tests in ciliary culture specimens. There are currently 33 known genes associated with PCD and correlations between genotype and ultrastructural defects have been increasingly demonstrated. Comprehensive genetic testing may hopefully screen young infants before symptoms occur, thus improving survival. Recent surprising advances in PCD genetic designed a novel approach called "gene editing" to restore gene function and normalize ciliary motility, opening up new avenues for treating PCD. Currently, there are no data from randomized clinical trials to support any specific treatment, thus, management strategies are usually extrapolated from cystic fibrosis. The goal of treatment is to prevent exacerbations, slowing the progression of lung disease. The therapeutic mainstay includes airway clearance maneuvers mainly with nebulized hypertonic saline and chest physiotherapy, and prompt and aggressive administration of antibiotics. Standardized care at specialized centers using a multidisciplinary approach that imposes surveillance of lung function and of airway biofilm composition likely improves patients' outcome. Pediatricians, neonatologists, pulmonologists, and ENT surgeons should maintain high awareness of PCD and refer patients to the specialized center before sustained irreversible lung damage develops. The recent creation of a network of PCD clinical centers, focusing on improving diagnosis and treatment, will hopefully help to improve care and knowledge of PCD patients.
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Affiliation(s)
- Virginia Mirra
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
- Department of Pediatrics, Federico II University, Naples, Italy
| | - Claudius Werner
- Department of General Pediatrics, University Children’s Hospital Muenster, Muenster, Germany
| | - Francesca Santamaria
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
- Department of Pediatrics, Federico II University, Naples, Italy
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17
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Wang PP, Wang GX, Ge WT, Tang LX, Zhang J, Ni X. Nasal nitric oxide in allergic rhinitis in children and its relationship to severity and treatment. Allergy Asthma Clin Immunol 2017; 13:20. [PMID: 28396691 PMCID: PMC5381136 DOI: 10.1186/s13223-017-0191-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 03/09/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Nasal nitrous oxide (nNO) is increased in allergic rhinitis (AR), but not in asthma, and is a non-invasive marker for inflammation in the nasal passages. METHODS Levels of nNO were measured and compared in healthy children and children with mild and moderate-to-severe AR. Levels of nNO before and after treatment with steroids and/or antihistamine were then compared in the 2 AR groups. Their relationship to quality of life and nasal symptom and reactivity to outdoor and outdoor allergens were examined. RESULTS nNO levels were higher in mild AR than in healthy children and higher in moderate-to-severe AR than in mild AR. One month steroid and/or antihistamine treatment lowered nNO levels to control levels in mild AR and approximately halfway to control levels in moderate-to-severe AR. nNO levels had a weak correlation to quality of life questions and a fair correlation to nasal symptom scores before treatment. This correlation was weakened or lost after treatment, and no correlation was seen between nNO levels and responses to indoor or outdoor allergens. CONCLUSION nNO levels in children with AR may be useful for assessing the response to treatment. Their relationship to quality of life, nasal symptoms, and sensitivity to specific allergens needs further study.
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Affiliation(s)
- Peng-Peng Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, 56 Nan Li Shi Road Xi Cheng District, Beijing, 100045 People's Republic of China
| | - Gui-Xiang Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, 56 Nan Li Shi Road Xi Cheng District, Beijing, 100045 People's Republic of China
| | - Wen-Tong Ge
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, 56 Nan Li Shi Road Xi Cheng District, Beijing, 100045 People's Republic of China
| | - Li-Xing Tang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, 56 Nan Li Shi Road Xi Cheng District, Beijing, 100045 People's Republic of China
| | - Jie Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, 56 Nan Li Shi Road Xi Cheng District, Beijing, 100045 People's Republic of China
| | - Xin Ni
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, 56 Nan Li Shi Road Xi Cheng District, Beijing, 100045 People's Republic of China
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18
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Beydon N, Chambellan A, Alberti C, de Blic J, Clément A, Escudier E, Le Bourgeois M. Technical and practical issues for tidal breathing measurements of nasal nitric oxide in children. Pediatr Pulmonol 2015; 50:1374-82. [PMID: 25731630 DOI: 10.1002/ppul.23167] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 01/29/2015] [Accepted: 02/10/2015] [Indexed: 11/06/2022]
Abstract
To promote early screening of patients with suspected Primary Ciliary Dyskinesia (PCD), nasal nitric oxide (nNO) measurements during tidal breathing (TB) have been developed for children unable to ensure velum closure (VC) during breath hold or expiration against resistance. To investigate technical and practical issues related to TB-nNO methods in children referred for suspected or asserted PCD, we recorded, in a prospective multicenter study, TB-nNO (calculated as the mean of 5 peaks, 10 or 30 sec during tidal breathing) and VC-nNO when available. We studied 142 children (PCD diagnosis asserted in 47, excluded in 39). Nasal NO values were significantly different according to methods, VC-nNO being higher than TB-nNO (TB-nNO 5 peaks higher than mean of 10 or 30 sec). Specificity (90-94%) and sensitivity (86-97%) were similar between TB-nNO and VC-nNO methods. Age was more correlated with VC-nNO than with TB-nNO. TB-nNO could differ between the two nostrils by more than 10% (or 10 ppb when nNO absolute value lower 100 ppb) in 32-43% of the tested children, according to the different tidal breathing values, and was reproducible in the long term but influenced by ambient NO. Despite TB-nNO values being lower than VC-nNO, TB-nNO was found to be as discriminant for PCD, and probably more discriminant in children less than 8 years old, as the VC method. These results were obtained using the chemiluminescence technique which allows an easier assessment of relevant factors such as nasal permeability and ambient NO than the electrochemical technique.
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Affiliation(s)
- Nicole Beydon
- APHP, Unité Fonctionnelle de Physiologie-Explorations Fonctionnelles Respiratoires, Hôpital Armand-Trousseau, Paris, France.,INSERM U938, Centre de Recherche Saint Antoine, Paris, France
| | - Arnaud Chambellan
- INSERM UMR915, Laboratoire d'Explorations Fonctionnelles, Faculté de médecine, CHU de Nantes, L'institut du thorax, Université de Nantes, France
| | - Corinne Alberti
- AP-HP, Hopital Robert Debré, Unité d'Epidémiologie Clinique, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, UMR-S 1123, Paris, France.,Inserm, CIC-EC 1426 et U1123, Paris, France
| | - Jacques de Blic
- APHP, Service de Pneumologie et Allergologie Pédiatriques, Hôpital Necker-Enfants Malades, Paris, France.,Université Paris Descartes, Paris, France
| | - Annick Clément
- AP-HP, Centre de Référence des Maladies Respiratoires Rares, Service de pneumologie pédiatrique, Hôpital Armand-Trousseau, Paris, France.,Université Pierre et Marie Curie, Paris, France
| | - Estelle Escudier
- INSERM UMR_S933, Université Pierre et Marie Curie (UPMC) - Paris 6; et service de Génétique et Embryologie médicales, AP-HP, Hôpital Armand Trousseau, Paris, France
| | - Muriel Le Bourgeois
- APHP, Service de Pneumologie et Allergologie Pédiatriques, Hôpital Necker-Enfants Malades, Paris, France
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19
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Establishing normative nasal nitric oxide values in infants. Respir Med 2015; 109:1126-30. [PMID: 26233707 DOI: 10.1016/j.rmed.2015.07.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 07/02/2015] [Accepted: 07/13/2015] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Primary ciliary dyskinesia (PCD), a disease of impaired respiratory cilia motility, is often difficult to diagnose. Recent studies show low nasal nitric oxide (nNO) is closely linked to PCD, allowing the use of nNO measurement for PCD assessments. Nasal NO cutoff values for PCD are stratified by age, given nNO levels normally increase with age. However, normative values for nNO have not been established for infants less than 1 year old. In this study, we aim to establish normative values for nNO in infants and determine their utility in guiding infant PCD assessment. METHODS AND RESULTS We obtained 42 nNO values from infants less than 1 year old without a history of PCD or recurrent sinopulmonary disease. Using regression analysis, we estimated the mean age-adjusted nNO values and established a 95% prediction interval (PI) for normal nNO. Using these findings, we were able to show 14 of 15 infant PCD patients had abnormally low nNO with values below the 95% PI. CONCLUSIONS In this study we determined a regression model that best fits normative nNO values for infants less than 1 year old. This model identified the majority of PCD infants as having abnormally low nNO. These findings suggest nNO measurement can help guide PCD assessment in infants, and perhaps other pulmonary diseases with a link to low nNO. With early assessments, earlier clinical intervention may be possible to slow disease progression and help reduce pulmonary morbidity.
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