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Metabolites of L-ARG in Exhaled Breath Condensate and Serum Are Not Biomarkers of Bronchial Asthma in Children. J Clin Med 2022; 11:jcm11010252. [PMID: 35011992 PMCID: PMC8746037 DOI: 10.3390/jcm11010252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 11/17/2022] Open
Abstract
(1) Background: L-arginine (L-ARG) and its metabolites are involved in some aspects of asthma pathogenesis (airway inflammation, oxidative stress, bronchial responsiveness, collagen deposition). Published data indicate that lungs are a critical organ for the regulation of L-ARG metabolism and that alterations in L-ARG metabolism may be significant for asthma. The aim of this study was to assess the levels of L-ARG and its metabolites in pediatric patients with asthma in serum and exhaled breath condensate (EBC) by mass spectrometric analysis and compare them with non-asthmatic children. (2) Methods: Sixty-five children (37 pediatric patients with bronchial asthma and 28 healthy control subjects) aged 6–17 participated in the study. All participants underwent a clinical visit, lung tests, allergy tests with common aeroallergens, and serum and EBC collection. The levels of biomarkers were determined in both serum and EBC. Analytical chromatography was conducted using an Acquity UPLC system equipped with a cooled autosampler and an Acquity HSS T3 column. Mass spectrometric analysis was conducted using the Xevo G2 QTOF MS with electrospray ionization (ESI) in positive ion mode. (3) Results: Asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA) levels in serum and EBC did not differ significantly in asthmatic children and healthy control subjects. We found no correlation between forced expiratory volume in one second (FEV1) and L-ARG and its metabolites, as well as between interleukin-4 (IL-4) serum level and L-ARG and its metabolites. Concentrations of ADMA, SDMA, citrulline (CIT), and ornithine (ORN) were higher in serum than EBC in asthmatics and non-asthmatics. By contrast, concentrations of dimethylarginine (DMA) were higher in EBC than serum. ADMA/L-ARG, SDMA/L-ARG, and DMA/L-ARG ratios were significantly higher in EBC than in serum in asthmatics and in non-asthmatics. (4) Conclusions: Serum and EBC concentrations of L-ARG and its metabolites were not an indicator of pediatric bronchial asthma in our study.
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Marei ES, El-Maghraby DF, Ashry K. Correlation of vitamin D and asymmetric dimethylarginine in children with bronchial asthma. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2021. [DOI: 10.1080/16878507.2021.1923898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Elham S. Marei
- Health Radiation Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Dina F. El-Maghraby
- Health Radiation Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
| | - Khaled Ashry
- Health Radiation Research Department, National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
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Garden FL, Toelle BG, Mihrshahi S, Webb KL, Almqvist C, Tovey ER, Brew BK, Ayer JG, Skilton MR, Jones G, Ferreira MAR, Cowie CT, Weber-Chrysochoou C, Britton WJ, Celermajer DS, Leeder SR, Peat JK, Marks GB. Cohort profile: The Childhood Asthma Prevention Study (CAPS). Int J Epidemiol 2019; 47:1736-1736k. [PMID: 29800224 DOI: 10.1093/ije/dyy078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2018] [Indexed: 12/22/2022] Open
Affiliation(s)
- Frances L Garden
- South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.,Ingham Institute for Applied Medical Research, Sydney, NSW, Australia.,Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Brett G Toelle
- Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia.,Sydney Local Health District, Sydney, NSW, Australia
| | - Seema Mihrshahi
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Karen L Webb
- Nutrition Policy Institute, University of California, Berkeley, CA, USA
| | - Catarina Almqvist
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Euan R Tovey
- Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Bronwyn K Brew
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Julian G Ayer
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Heart Centre for Children, Children's Hospital at Westmead, Westmead, NSW, Australia
| | - Michael R Skilton
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Boden Institute of Obesity, Nutrition, Exercise and Eating Disorders, University of Sydney, Sydney, NSW, Australia
| | - Graham Jones
- School of Science and Health, Western Sydney University, Sydney, NSW, Australia
| | | | - Christine T Cowie
- South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.,Ingham Institute for Applied Medical Research, Sydney, NSW, Australia.,Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia
| | | | - Warwick J Britton
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Mycobacterial Research Program, Centenary Institute, Sydney, NSW, Australia
| | - David S Celermajer
- Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia.,Department of Cardiology, Royal Prince Alfred Hospital, Sydney, NSW, Australia
| | - Stephen R Leeder
- Menzies Centre for Health Policy, University of Sydney, Sydney, NSW, Australia
| | - Jennifer K Peat
- Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia
| | - Guy B Marks
- South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia.,Ingham Institute for Applied Medical Research, Sydney, NSW, Australia.,Woolcock Institute of Medical Research, University of Sydney, Sydney, NSW, Australia
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4
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Positive correlation of airway resistance and serum asymmetric dimethylarginine (ADMA) in bronchial asthma patients lacking evidence for systemic inflammation. Allergy Asthma Clin Immunol 2018; 14:2. [PMID: 29308071 PMCID: PMC5751874 DOI: 10.1186/s13223-017-0226-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 12/15/2017] [Indexed: 11/23/2022] Open
Abstract
Background Contribution of nitric-oxide (NO) pathway to the pathogenesis of bronchial asthma (asthma) is ambiguous as NO may confer both protective and detrimental effects depending on the NO synthase (NOS) isoforms, tissue compartments and underlying pathological conditions (e.g. systemic inflammation). Asymmetric dimethylarginine (ADMA) is an endogenous inhibitor and uncoupler of NOS with distinct selectivity for NOS isoforms. In a cross-sectional study, we assessed whether ADMA is an independent predictor of airway resistance (Raw) in therapy-controlled asthma. Methods 154 therapy-controlled asthma patients were recruited. ADMA, symmetric dimethylarginine and arginine were quantitated by HPLC with fluorescent detection. Pulmonary function test was done using whole-body plethysmography, quality of life via St. George’s Respiratory questionnaire (SGRQ). Multiple linear regression was used to identify independent determinants of Raw. The final model was stratified based on therapy control. Results Evidence for systemic inflammation indicated by CRP and procalcitonin was lacking in our sample. Log Raw showed significant positive correlation with log ADMA in the whole data set and well-controlled but not in the not well-controlled stratum (Spearman correlation coefficients: 0.27, p < 0.001; 0.30, p < 0.001; 0.12, p = 0.51 respectively). This relationship remained significant after adjusting for confounders by multiple linear regression (β = 0.22, CI 0.054, 0.383 p = 0.01). FEF 25–75% % predicted and SGRQ Total score showed significant negative while SGRQ Activity score showed significant positive correlation with Raw in the final model. Conclusions Positive correlation between Raw and ADMA in the absence of systemic inflammation implies that higher ADMA has detrimental effect on NO homeostasis and can contribute to a poor outcome in asthma.
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EL-Alameey IR, Fathy GA, Shady MMA, Ali A, Fathy HA, Youness ER, Nasr SA. Relationship of Oxidant and Antioxidant Markers to Asthma Severity in Egyptian Asthmatic Children. Open Access Maced J Med Sci 2017; 5:645-650. [PMID: 28932307 PMCID: PMC5591596 DOI: 10.3889/oamjms.2017.149] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/18/2017] [Accepted: 06/20/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Asthma is a chronic airway disease which is characterized by oxidant antioxidant imbalance with the generation of oxidative stress related mediators. AIM The study aimed to evaluate the role of asymmetric dimethylarginine, and malondialdehyde as oxidant markers and serum paraoxonase activity as an antioxidant marker in asthma, and to determine their relationship to the asthma severity and lung function among asthmatic children in Egypt. PATIENTS AND METHODS This case control study was conducted on sixty patients with asthma compared with sixty apparently healthy children of matched age and sex. RESULTS Serum concentrations of oxidant markers as asymmetric dimethylarginine and malondialdehyde were significantly increased in asthmatic patients while anti-oxidant marker as paraoxonase activity was significantly decreased compared to healthy controls (P < 0.05). ANOVA test revealed highly significant elevation of the serum concentrations of oxidant markers while anti-oxidant marker was significantly decreased in severe asthmatic patients (P < 0.001) compared to the patients with moderate and mild asthma respectively. Serum malondialdehyde concentration was a strong predictor of asthma severity by multiple regression analysis (P < 0.05). CONCLUSION The study revealed an imbalance between oxidative and antioxidant defence systems in asthmatic children. Serum concentration of malondialdehyde was the most predictive biomarker having a significant association with asthma severity.
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Affiliation(s)
| | - Gihan A. Fathy
- National Research Centre, Child Health Department, Egypt
| | | | - Alaa Ali
- National Research Centre, Child Health Department, Egypt
| | - Hanan A. Fathy
- National Center for Radiation Research and Technology, Pediatric Department, Egypt
| | | | - Soha A. Nasr
- National Research Centre, Clinical Pathology, Egypt
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Mason P, Scarpa MC, Guarnieri G, Giordano G, Baraldi E, Maestrelli P. Exhaled nitric oxide dynamics in asthmatic reactions induced by diisocyanates. Clin Exp Allergy 2016; 46:1531-1539. [PMID: 27533788 DOI: 10.1111/cea.12798] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 07/01/2016] [Accepted: 07/05/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND Isocyanate-induced asthmatic reactions are associated with delayed increase in fractional exhaled nitric oxide measured at expiratory flow of 50 mL/s (FeNO50), a biomarker of airway inflammation. The time course of FeNO increase is compatible with the activation of NO synthase, but the origin of NO production in the lung is undetermined. OBJECTIVE The aim of this study was to define the dynamics of airway and alveolar NO during specific inhalation challenge (SIC) with isocyanates and the role of asymmetric dimethylarginine (ADMA), an endogenous inhibitor of NO synthase. METHODS Spirometry, exhaled NO parameters (FeNO50, bronchial wall NO concentration, NO airway diffusing capacity, NO flux to luminal space, alveolar NO) and ADMA levels in exhaled breath condensate were measured before and at intervals up to 24 h after exposure to isocyanates. The results were compared between 17 SIC-positive and eight SIC-negative subjects. RESULTS A significant FeNO50 increase in SIC-positive subjects was detected 24 h after exposure and was associated with the augmented NO flux from airway wall to the lumen, whereas airway NO diffusion and alveolar NO were not affected. The changes in NO dynamics were specific for the subjects who developed an asthmatic reaction, but were independent from the pattern and magnitude of bronchoconstriction. There was no evidence that exhaled NO is modulated by the changes in ADMA concentration. CONCLUSIONS AND CLINICAL RELEVANCE Because isocyanate-induced increase in FeNO50 was almost exclusively determined by the increase in NO flux, the use of FeNO50 appears adequate to monitor the exhaled NO dynamics during SIC. FeNO50 measurement may provide additional information to spirometry, because bronchoconstriction and airway inflammatory responses are dissociated.
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Affiliation(s)
- P Mason
- Department of Cardiologic, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - M C Scarpa
- Department of Cardiologic, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - G Guarnieri
- Department of Cardiologic, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - G Giordano
- Women's and Children's Health Department, University of Padova, Padova, Italy
| | - E Baraldi
- Women's and Children's Health Department, University of Padova, Padova, Italy
| | - P Maestrelli
- Department of Cardiologic, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
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Abstract
Nitric oxide (NO) is important in the regulation of airway tone and airway responsiveness. Alterations in the L-arginine metabolism resulting in reduced availability of the substrate L-arginine for NO synthases, as well as the presence of NO synthase inhibitors such as asymmetric dimethylarginine, contribute to the reduced NO formation and airway dysfunction in asthma. Therapeutic interventions aiming to modulate the impaired L-arginine metabolism may help correct the enhanced airway tone and responsiveness in asthma.
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Affiliation(s)
- Jeremy A Scott
- Division of Biomedical Sciences, Department of Health Sciences, Faculty of Health and Behavioural Sciences, Northern Ontario School of Medicine, Lakehead University, 955 Oliver Road Thunder Bay, Ontario P7B 5E1, Canada
| | - Hartmut Grasemann
- Program in Physiology and Experimental Medicine, Research Institute, and Division of Respiratory Medicine, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario M5G 1X8, Canada.
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