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Harper A, Chapel M, Hodgson G, Malinowski K, Yates I, Garle M, Ralevic V. GYY4137, a hydrogen sulfide donor, protects against endothelial dysfunction in porcine coronary arteries exposed to myeloperoxidase and hypochlorous acid. Vascul Pharmacol 2023; 152:107199. [PMID: 37500030 DOI: 10.1016/j.vph.2023.107199] [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: 04/06/2022] [Revised: 07/12/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
BACKGROUND AND AIMS Myeloperoxidase (MPO) and its principal reaction product hypochlorous acid (HOCl) are part of the innate immune response but are also associated with endothelial dysfunction, thought to involve a reduction in nitric oxide (NO) bioavailability. We aimed to investigate the effect of MPO and HOCl on vasorelaxation of coronary arteries and to assess directly the involvement of NO. In addition, we hypothesised that the slow release hydrogen sulfide (H2S) donor GYY4137 would salvage coronary artery endothelial function in the presence of MPO and HOCl. METHODS AND RESULTS Contractility of porcine coronary artery segments was measured using isometric tension recording. Incubation with MPO (50 ng/ml) plus hydrogen peroxide (H2O2) (30 μM; substrate for MPO) impaired endothelium-dependent vasorelaxation to bradykinin in coronary arteries. HOCl (10-500 μM) also impaired endothelium-dependent relaxations. There was no effect of MPO plus H2O2, or HOCl, on endothelium-independent relaxations to 5'-N-ethylcarboxamidoadenosine and sodium nitroprusside. L-NAME (300 μM), a NO synthase inhibitor, attenuated bradykinin relaxations, leaving L-NAME-resistant relaxations to bradykinin mediated by endothelium-dependent hyperpolarization. In the presence of L-NAME, MPO plus H2O2 largely failed to impair endothelium-dependent relaxations to bradykinin. Similarly, HOCl failed to inhibit endothelium-dependent relaxations to bradykinin in the presence of L-NAME. GYY4137 (1-100 μM) protected endothelium-dependent relaxations to bradykinin from dysfunction caused by MPO plus H2O2, and HOCl, with no effect alone on bradykinin relaxation responses. The specific MPO inhibitor aminobenzoic acid hydrazide (ABAH) (1 and 10 μM) also protected against MPO plus H2O2-induced endothelial dysfunction (at 10 μM ABAH), but was less potent than GYY4137. CONCLUSIONS MPO plus H2O2, and HOCl, impair coronary artery endothelium-dependent vasorelaxation via inhibition of NO. GYY4137 protects against endothelial dysfunction in arteries exposed to MPO plus H2O2, and HOCl. H2S donors such as GYY4137 are possible therapeutic options to control excessive MPO activity in cardiovascular diseases.
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Affiliation(s)
- Andrew Harper
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Maike Chapel
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Grace Hodgson
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | | | - Imogen Yates
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Michael Garle
- School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Vera Ralevic
- School of Life Sciences, University of Nottingham, Nottingham, UK.
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Abdel-Rasoul GM, El-Sayed Abu-Salem M, Abdel-Azeem Salem E, Younis FE, Abdel-Monaem AM, Allam HK. Respiratory health disorders among workers in some Egyptian welding enterprises. Toxicol Ind Health 2022; 38:53-62. [PMID: 35072568 DOI: 10.1177/07482337211064950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Welding fumes contain a complex mixture of metallic oxides that pose a risk to welders' respiratory systems. This study aimed to evaluate respiratory health disorders among workers in some Egyptian welding enterprises and their relationship to the workplace environment. This research was performed from January 1st, 2019 to February 28th, 2021 in welding enterprises in Birket El-Sabaa, a randomly selected district of Menoufia governorate, Egypt. A cross-sectional comparative study was conducted on 110 welders and 110 non-occupationally exposed subjects. Environmental studies were carried out for total welding fumes, respirable dust, and manganese air levels. Spirometric measures and manganese levels in whole blood were applied. Analysis of the personal air samples revealed that the mean values of welding fumes, respirable dust, and manganese air levels were higher than the international permissible levels. Welders had a higher significant prevalence of respiratory manifestations (rhinitis, cough, expectoration, wheezes, dyspnea, and chronic bronchitis) as well as decreased spirometric measures (FVC%, FEV1%, FEV1/FVC%, and FEF25-75%) than controls. The mean value of whole blood manganese level was statistically significantly higher among welders than that of the controls (3.35 ± 0.5 and 1.81 ± 0.79 ng/mL; respectively). A significant relationship was reported between longer work time and the prevalence of respiratory manifestations and decreased spirometric measurements. The use of masks/respirators was associated with a reduced prevalence of respiratory manifestations. Finally, welders that are exposed to welding fumes at concentrations higher than the permissible levels in welding establishments suffer from adverse respiratory problems, as shown by increased prevalence of respiratory manifestations and lower spirometric measurements. Regular use of high-quality personal protective equipment, especially masks, as well as periodic medical examinations for welders, is highly urged.
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Affiliation(s)
- Gaafar M Abdel-Rasoul
- Public Health and Community Medicine Department, Faculty of Medicine, 68872Menoufia University, Shebin El-Kom, Egypt
| | - Mahmoud El-Sayed Abu-Salem
- Public Health and Community Medicine Department, Faculty of Medicine, 68872Menoufia University, Shebin El-Kom, Egypt
| | - Eman Abdel-Azeem Salem
- Public Health and Community Medicine Department, Faculty of Medicine, 68872Menoufia University, Shebin El-Kom, Egypt
| | - Faten E Younis
- Public Health and Community Medicine Department, Faculty of Medicine, 68872Menoufia University, Shebin El-Kom, Egypt
| | - Amira M Abdel-Monaem
- Public Health and Community Medicine Department, Faculty of Medicine, 68872Menoufia University, Shebin El-Kom, Egypt
| | - Heba K Allam
- Public Health and Community Medicine Department, Faculty of Medicine, 68872Menoufia University, Shebin El-Kom, Egypt
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Caponnetto P, Emma R, Benfatto F, Ferlito S, Gulino A, Maniaci A, Lechien JR, Ingrassia A, Cocuzza S, Polosa R. Saccharin test: Methodological validation and systematic review of the literature. EAR, NOSE & THROAT JOURNAL 2021:1455613211064044. [PMID: 34915769 DOI: 10.1177/01455613211064044] [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] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVES Saccharin test (ST) is a convenient method to assess the efficiency of mucociliary clearance, the primary defense mechanism of the upper airways' tract. The study objectives are to: (1) substantiate its short- (3 days) and long-term (30 days) repeatability; (2) assess its tolerability; (3) conduct a systematic literature review and to compare our results with the existing evidence. METHODS Twenty-nine healthy subjects were enrolled in an observational prospective study to perform an ST on three separate visits (at baseline; at follow-up visits at day 3 and at day 30). Transit times were recorded and self-reported nasal and general symptoms noted. A systematic review of the literature was conducted to compare our results with the existing literature. RESULTS The mean values (±SD) of ST transit time (STTT) were 7.085 (±2.19), 7.788 (±2.11), and 7.790 (±2.06) minutes at baseline, day 3, and day 30, respectively. Significant linear regression analysis was observed between day 3 and baseline (r = .193; P = .019) and day 30 and baseline (r = .182 P = .024). Significant agreement for the intrasession repeatability was observed with an ICC = .354 (P = .001). Outcomes' comparisons between baseline vs day 3 (P = .197) and baseline vs day 30 (P = .173) were not statistically significant. ST was well tolerated. Concordance with existing literature's data and high level of STTT repeatability were confirmed by the qualitative analysis. CONCLUSION STTT reproducibility was good both in the short- and long-term. ST tolerability was very good. Our study data are consistent with the existing literature, indicating ST as a sound methodology for detection of early respiratory health changes and for specific regulatory application in respiratory research.
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Affiliation(s)
- Pasquale Caponnetto
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico - V. Emanuele", 9298University of Catania, Catania, Italy
- Center of Excellence for the Acceleration of Harm Reduction (CoEHAR), 9298University of Catania, Catania, Italy
| | - Rosalia Emma
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico - V. Emanuele", 9298University of Catania, Catania, Italy
- Center of Excellence for the Acceleration of Harm Reduction (CoEHAR), 9298University of Catania, Catania, Italy
| | - Francesca Benfatto
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico - V. Emanuele", 9298University of Catania, Catania, Italy
| | - Salvatore Ferlito
- Department of Medical Science, Surgical Science and Advanced Technologies "G.F, Ingrassia", 9298University of Catania, Catania, Italy
| | - Alessandro Gulino
- Department of Medical Science, Surgical Science and Advanced Technologies "G.F, Ingrassia", 9298University of Catania, Catania, Italy
| | - Antonino Maniaci
- Department of Medical Science, Surgical Science and Advanced Technologies "G.F, Ingrassia", 9298University of Catania, Catania, Italy
| | - Jerome R Lechien
- Department of Human Anatomy and Experimental Oncology, Faculty of Medicine, UMONS Research Institute for Health Sciences and Technology, 54521University of Mons (UMons), Mons, Belgium
| | - Angelo Ingrassia
- Department of Medical Science, Surgical Science and Advanced Technologies "G.F, Ingrassia", 9298University of Catania, Catania, Italy
| | - Salvatore Cocuzza
- Department of Medical Science, Surgical Science and Advanced Technologies "G.F, Ingrassia", 9298University of Catania, Catania, Italy
| | - Riccardo Polosa
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico - V. Emanuele", 9298University of Catania, Catania, Italy
- Center of Excellence for the Acceleration of Harm Reduction (CoEHAR), 9298University of Catania, Catania, Italy
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Uzeloto JS, Ramos D, Silva BSDA, Lima MBPD, Silva RN, Camillo CA, Ramos EMC. Mucociliary Clearance of Different Respiratory Conditions: A Clinical Study. Int Arch Otorhinolaryngol 2021; 25:e35-e40. [PMID: 33542749 PMCID: PMC7850890 DOI: 10.1055/s-0039-3402495] [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: 07/22/2019] [Accepted: 11/11/2019] [Indexed: 10/27/2022] Open
Abstract
Introduction Mucociliary clearance (MCC) is the first line of defense of the pulmonary system. Mucociliary clearance impairment may lead to increased risk of respiratory infections, lung injury, pulmonary repair problems, chronic dysfunctions and progression of respiratory diseases. Objective To characterize the MCC of active and passive smokers and individuals with chronic obstructive pulmonary disease (COPD) and compare the MCC behaviors between men and women of different age groups. Methods Patients with COPD (current smokers and ex-smokers) and apparently healthy individuals (current smokers, passive smokers and nonsmokers) were evaluated. All of the subjects underwent lung function and MCC evaluation (saccharin transport test [STT]). Smokers (with or without COPD) were questioned about the smoking history. Results A total of 418 individuals aged 16 to 82 years old, of both genders, were evaluated. The STT values of active and passive smokers were statistically higher than those of the control group ( p < 0.01). Men of the control group had lower values of STT than active smokers (9.7 ± 7.1 and 15.4 ± 10.1 minute, respectively, p < 0.01). In addition, higher MCC velocity was observed in women that are current smokers (11.7 ± 6.8 minute) compared with men (15.4 ± 10.1 minute) in this group ( p = 0.01). Among the younger age groups (< 50 years old), only passive smokers presented higher STT in relation to the control group. Conclusion Passive and active smoking are factors that influence negatively the MCC, and passive smokers may present losses of this mechanism at a younger age. Additionally, male smokers present worse MCC than male nonsmokers.
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Affiliation(s)
- Juliana Souza Uzeloto
- Departament of Physiotherapy, Universidade Estadual Paulista "Júlio de Mesquita Filho", Presidente Prudente, SP, Brazil
| | - Dionei Ramos
- Departament of Physiotherapy, Universidade Estadual Paulista "Júlio de Mesquita Filho", Presidente Prudente, SP, Brazil
| | | | | | - Rebeca Nunes Silva
- Departament of Physiotherapy, Universidade Estadual Paulista "Júlio de Mesquita Filho", Presidente Prudente, SP, Brazil
| | | | - Ercy Mara Cipulo Ramos
- Departament of Physiotherapy, Universidade Estadual Paulista "Júlio de Mesquita Filho", Presidente Prudente, SP, Brazil
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Dos Santos Arcas C, Lin-Wang HT, Umeda IIK, de Sousa MG, Utiyama DMO, de Padua Mansur A, Macchione M, Hirata MH, Nakagawa NK. Smoking load reduction is insufficient to downregulate miR-301b, a lung cancer promoter. Sci Rep 2020; 10:21112. [PMID: 33273694 PMCID: PMC7713348 DOI: 10.1038/s41598-020-78242-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 11/20/2020] [Indexed: 12/23/2022] Open
Abstract
Several circulating miRNAs identified in the plasma of smokers have been implicated as promoters of nasopharyngeal and lung carcinoma. To investigate the plasma profile of miRNAs in subjects who reduces the number of smoked cigarettes and who quit after six months. We accompanied 28 individuals enrolled in a Smoking Cessation Program over 6 months. At Baseline, clinical characteristics, co-morbidities, and smoking history were similar among subjects. After 6 months, two groups were defined: who successfully quitted smoking (named "quitters", n = 18, mean age 57 years, 11 male) and who reduced the number of cigarettes smoked (20-90%) but failed to quit smoking (named "smokers", n = 10, mean age 52 years, 3 male). No significant clinical changes were observed between groups at baseline and after a 6-month period, however, quitters showed significant downregulations in seven miRNAs at baseline: miR-17 (- 2.90-fold, p = 0.029), miR-20a (- 3.80-fold, p = 0.021); miR-20b (- 4.71-fold, p = 0.027); miR-30a (- 3.95-fold, p = 0.024); miR-93 (- 3.63-fold, p = 0.022); miR-125a (- 1.70-fold, p = 0.038); and miR-195 (- 5.37-fold, p = 0.002), and after a 6-month period in 6 miRNAs: miR-17 (- 5.30-fold, p = 0.012), miR-20a (- 2.04-fold, p = 0.017), miR-20b (- 5.44-fold, p = 0.017), miR-93 (- 4.00-fold, p = 0.041), miR-101 (- 4.82-fold, p = 0.047) and miR-125b (- 3.65-fold, p = 0.025). Using time comparisons, only quitters had significant downregulation in miR-301b (- 2.29-fold, p = 0.038) after 6-month. Reductions in the number of smoked cigarettes was insufficient to change the plasma profile of miRNA after 6 months. Only quitting smoking (100% reduction) significantly downregulated miR-301b related to hypoxic conditions, promotion of cell proliferation, decreases in apoptosis, cancer development, and progression as increases in radiotherapy and chemotherapy resistance.
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Affiliation(s)
- Camila Dos Santos Arcas
- Department of Physiotherapy, LIM-54, Faculdade de Medicina da Universidade de São Paulo, Av. Dr. Arnaldo, 455 room 1150, São Paulo, São Paulo, 01246-930, Brazil
| | - Hui Tzu Lin-Wang
- Dante Pazzanese Institute of Cardiology São Paulo State, São Paulo, Brazil
| | - Iracema Ioco Kikuchi Umeda
- Department of Physiotherapy, LIM-54, Faculdade de Medicina da Universidade de São Paulo, Av. Dr. Arnaldo, 455 room 1150, São Paulo, São Paulo, 01246-930, Brazil
- Dante Pazzanese Institute of Cardiology São Paulo State, São Paulo, Brazil
| | | | | | - Antonio de Padua Mansur
- Department of Cardiopneumology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Mariangela Macchione
- Department of Pathology, LIM05, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Mario Hiroyuki Hirata
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Naomi Kondo Nakagawa
- Department of Physiotherapy, LIM-54, Faculdade de Medicina da Universidade de São Paulo, Av. Dr. Arnaldo, 455 room 1150, São Paulo, São Paulo, 01246-930, Brazil.
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Emma R, Caponnetto P, Cibella F, Caruso M, Conte G, Benfatto F, Ferlito S, Gulino A, Polosa R. Short and Long Term Repeatability of Saccharin Transit Time in Current, Former, and Never Smokers. Front Physiol 2020; 11:1109. [PMID: 33071804 PMCID: PMC7537769 DOI: 10.3389/fphys.2020.01109] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/11/2020] [Indexed: 11/24/2022] Open
Abstract
Smoking progressively damages the efficiency of mucociliary clearance (MCC) defense mechanisms, thus contributing to increased susceptibility to respiratory infections. Prolonged mucociliary clearance transit time (MCCTT) caused by chronic smoking has been investigated by saccharin test, but little data is available about its short- and long-term reproducibility. Moreover, it is not known if MCC impairment can be reversed when stopping smoking. Objective of the study is to investigate and compare short (3 days) and long term (30 days) repeatability of baseline saccharin transit time (STT) among current, former, and never smokers. STT results were analyzed in 39 current, 40 former, and 40 never smokers. Significant (p < 0.0001) short-term and long-term repeatability of STT were observed in current (R squared = 0.398 and 0.672, for short- and long-term, respectively) and former smokers (R squared = 0.714 and 0.595, for short- and long-term, respectively). Significant differences in MCCTT were observed among the three study groups (p < 0.0001); the median (IQR) MCCTT being 13.15 (10.24–17.25), 7.26 (6.18–9.17), and 7.24 (5.73–8.73) minutes for current, former and never smokers, respectively. Comparison between current smokers and former smokers was significantly different (p < 0.0001). There was no significant difference between former and never smokers. The Saccharin test was well tolerated by all participants. We have shown for the first time high level repeatability in both current and former smokers. Moreover, MCC impairment can be completely reversed, former smokers exhibiting similar STT as never smokers. Measurement of STT is a sensitive biomarker of physiological effect for the detection of early respiratory health changes and may be useful for clinical research.
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Affiliation(s)
- Rosalia Emma
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico-V. Emanuele", University of Catania, Catania, Italy.,Center of Excellence for the Acceleration of Harm Reduction (CoEHAR), Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Pasquale Caponnetto
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico-V. Emanuele", University of Catania, Catania, Italy.,Center of Excellence for the Acceleration of Harm Reduction (CoEHAR), Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
| | - Fabio Cibella
- National Research Council, Institute of Biomedicine and Molecular Immunology, Palermo, Italy
| | - Massimo Caruso
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico-V. Emanuele", University of Catania, Catania, Italy.,Center of Excellence for the Acceleration of Harm Reduction (CoEHAR), Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy.,Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Gianluca Conte
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico-V. Emanuele", University of Catania, Catania, Italy
| | - Francesca Benfatto
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico-V. Emanuele", University of Catania, Catania, Italy
| | - Salvatore Ferlito
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F., Ingrassia", University of Catania, Catania, Italy
| | - Alessandro Gulino
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F., Ingrassia", University of Catania, Catania, Italy
| | - Riccardo Polosa
- Centre for the Prevention and Treatment of Tobacco Addiction (CPCT), Teaching Hospital "Policlinico-V. Emanuele", University of Catania, Catania, Italy.,Center of Excellence for the Acceleration of Harm Reduction (CoEHAR), Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy.,Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy
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Prasetyo A, Sadhana U, Budiman J. Nasal Mucociliary Clearance in Smokers: A Systematic Review. Int Arch Otorhinolaryngol 2020; 25:e160-e169. [PMID: 33542766 PMCID: PMC7851360 DOI: 10.1055/s-0040-1702965] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 12/18/2019] [Indexed: 11/02/2022] Open
Abstract
Introduction Smoking is one of the most important causes of mortality and morbidity in the world, as it is related to the risk factor and etiology of respiratory-tract diseases. Long-term smoking causes both structural and functional damage in the respiratory airways, leading to changes in nasal mucociliary clearance (NMC). Objectives The aim of the present study was to look systematically into the current literature and carefully collect and analyze results to explore NMC in smokers. Data Synthesis Two independent reviewers conducted a literature search on some Electronic database: Pubmed, Medline, Ebsco, Springer Link, Science Direct, Scopus, and Proquest searching for articles fulfilling the inclusion and exclusion criteria. The lead author independently assessed the risk of bias of each of the included studies and discussed their assessments with the other two authors to achieve consensus. Of the 1,654 articles identified in the database search, 16 met the criteria for this review. Most of the articles (15 out of 16) showed the impairment of NMC in smokers. Conclusion The present systematic review suggests that there is an impairment of NMC in smokers. The impairment is not only observed in cigarette smoking, but also in passive smoking, bidi smoking, electronic smoking, and hookah smoking. The impairment of NMC in chronic exposure to smoking is caused by the ciliotoxic effect, hypersecretion and viscoelastic change of mucous, airway surface liquid depletion, increased oxidative stress, and deteriorations in the inflammatory and immune systems.
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Affiliation(s)
- Awal Prasetyo
- Department of Biomedical Science, Faculty of Medicine, Diponegoro University, Semarang, Indonesia.,Department of Anatomic Pathology, Faculty of Medicine, Diponegoro University - Dr. Kariadi Hospital, Semarang, Indonesia
| | - Udadi Sadhana
- Department of Anatomic Pathology, Faculty of Medicine, Diponegoro University - Dr. Kariadi Hospital, Semarang, Indonesia
| | - Jethro Budiman
- Department of Biomedical Science, Faculty of Medicine, Diponegoro University, Semarang, Indonesia.,Department of Anatomic Pathology, Faculty of Medicine, Diponegoro University - Dr. Kariadi Hospital, Semarang, Indonesia.,Department of Emergency Unit, Panti Wilasa Citarum Hospital, Semarang, Indonesia
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Glennon SG, Huedo-Medina T, Rawal S, Hoffman HJ, Litt MD, Duffy VB. Chronic Cigarette Smoking Associates Directly and Indirectly with Self-Reported Olfactory Alterations: Analysis of the 2011-2014 National Health and Nutrition Examination Survey. Nicotine Tob Res 2020; 21:818-827. [PMID: 29121272 DOI: 10.1093/ntr/ntx242] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 11/07/2017] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Population-based studies show inconsistent effects of cigarette smoking on olfactory function. We aimed to identify direct and indirect associations between measures of smoking exposure/nicotine dependence and altered olfaction in a nationally representative sample of adults. METHODS NHANES 2011-2014 (n = 7418) participants (mean age = 57.8 ± 12.2 years) self-reported olfaction and related health and demographic risks. Affirmative answers to three questions defined altered olfaction (olfactory problems in the past years; worse ability since age 25; phantom smells). Smoking (never, former, current) was self-reported by chronicity (pack years, PY) and dependency (time to first cigarette upon waking) and verified by serum cotinine. Associations were tested with logistic regression, reporting odds ratios (ORs) and 95% confidence intervals (CIs), and mediation models. RESULTS Estimated prevalence of altered olfaction was 22.3%, with age-related increases. Nearly half of the sample were former/current smokers (47.4%). Controlling for olfactory-related risks, ≥10 PY smokers had significantly greater odds of altered olfaction versus never smokers (OR 1.36, CI: 1.06-1.74). The odds of altered olfaction were heightened among current smokers (≥10 PY) who also had high nicotine dependence (smoked ≤30 min of waking) (OR 1.41, CI: 1.01-1.99). Light smokers (≤10 PY smokers) did not show increased odds versus never smokers. Current smokers who also were heavy drinkers (≥4 drinks/day) had the highest odds for altered olfaction (OR 1.96, CI: 1.20-3.19). Olfactory-related pathologies (sinonasal problems, serious head injury, tonsillectomy, xerostomia) partially mediated the association between smoking and altered olfaction. CONCLUSIONS Chronic cigarette smoking was associated with increased odds of self-reported olfactory alterations, directly and indirectly via olfactory-related pathologies. IMPLICATIONS Analysis of the US nationally representative data revealed significant positive associations between chronic smoking and alterations in the sense of smell. Rates of smell alteration (self-reported problems in the past year, losses with aging, and phantom smells) increased from 23% among adults to 33% for chronic smokers and 38% for chronic smokers who also reported heavy drinking. Chronic smoking showed associations with smell alteration that were direct and indirect through exposure to olfactory-related pathologies (naso-sinus problems, dry mouth, head/facial injury). Smell alteration can impact smokers' quality of life by challenging the ability to sense warning odors, food flavor, and olfactory-stimulated emotions and memories.
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Affiliation(s)
| | - Tania Huedo-Medina
- Department of Allied Health Sciences, University of Connecticut, Storrs, CT
| | - Shristi Rawal
- Department of Nutritional Sciences, School of Health Professions, Rutgers University, Newark, NJ
| | - Howard J Hoffman
- Epidemiology and Statistics Program, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD
| | - Mark D Litt
- Department of Behavioral Sciences and Community Health, University of Connecticut School of Medicine, Farmington, CT
| | - Valerie B Duffy
- Department of Allied Health Sciences, University of Connecticut, Storrs, CT
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Schneller LM, McIntosh S, Li D, Rahman I, Ossip D, Goniewicz M, O'Connor RJ. Tobacco use and chemosensory impairments among current adult tobacco users in the US: Data from NHANES 2013-2014. Tob Induc Dis 2019; 16:43. [PMID: 31516441 PMCID: PMC6659548 DOI: 10.18332/tid/94202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/25/2018] [Accepted: 08/10/2018] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Among US adults 40 years and older, about 23% report problems with their ability to smell, and 19% report problems with their ability to taste. Chemosenses are a first line of defence against environmental hazards (e.g. fires and leaking gas). A potential risk factor of chemosensory disorders includes nicotine product use, such as cigarette use. This study aims to assess the relationship of taste and smell alterations with type of recent nicotine product use (e.g. inhaled versus smokeless), recent cigarette use, and mentholation status based on data from NHANES 2013–2014. METHODS A total of 3186 men and women, 40 years and older, from NHANES 2013–2014 were assessed for smell and taste impairment, according to their recent nicotine product use. Taste impairment was identified as inability to identify quinine as bitter in the whole-mouth taste test. Impairment of smell was defined as failing to identify six or more of eight specific odors. Logistic regression models were adjusted for age, gender, and race/ethnicity. RESULTS Approximately 13% of participants failed the smell examination. No significant association between smell examination outcome and recent nicotine product use was found, though recent cigarette use showed a trend toward positive association (OR=1.66, 95% CI: 0.76–3.63) and mentholation status showed a trend toward negative association (OR=0.57, 95% CI: 0.22–1.49) on smell examination results. About 17% of participants failed the taste examination, and trends toward positive association were seen between taste examination outcomes and both recent nicotine product use (OR=1.28, 95% CI: 0.99–1.65) and recent cigarette use (OR=1.30, 95% CI: 0.50–3.40). CONCLUSIONS Findings indicate that recent use of nicotine products has an inconsistent relationship to dysfunctions in taste and smell. However, limiting the use of inhaled nicotine products, such as from cigarette use, could prove beneficial to a person’s taste and smell ability.
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Affiliation(s)
| | | | - Dongmei Li
- University of Rochester, Rochester, United States
| | - Irfan Rahman
- University of Rochester, Rochester, United States
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10
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Bengtsson C, Jonsson L, Holmström M, Hellgren J, Franklin K, Gíslason T, Holm M, Johannessen A, Jõgi R, Schlünssen V, Janson C, Lindberg E. Incident Chronic Rhinosinusitis Is Associated With Impaired Sleep Quality: Results of the RHINE Study. J Clin Sleep Med 2019; 15:899-905. [PMID: 31138385 DOI: 10.5664/jcsm.7846] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 02/18/2019] [Indexed: 12/23/2022]
Abstract
STUDY OBJECTIVES Chronic rhinosinusitis (CRS) is a common inflammatory disease of the nasal cavity and paranasal sinuses. Associations between CRS and poor sleep quality have been reported. This 10-year follow-up study investigates possible associations between incident CRS and sleep quality. METHODS A questionnaire was sent to 16,500 individuals in Sweden, Norway, Denmark, Iceland and Estonia in 2000. It included questions on airway diseases, age, sex, body mass index, smoking habits, comorbidities, education and sleep quality. In 2010, a second questionnaire was sent to the same individuals, with a response rate of 53%. A subgroup of 5,145 individuals without nasal symptoms in 2000 was studied. Multiple logistic regression was performed to examine associations between CRS (defined according to the European position paper on rhinosinusitis and nasal polyps epidemiological criteria) at follow-up and sleep quality, with adjustment for potential confounders. Individuals with the respective sleep problem at baseline were excluded. RESULTS Over 10 years, 141 (2.7%) of the individuals without nasal symptoms in 2000 had developed CRS. CRS was associated with difficulties inducing sleep (adjusted odds ratio 2.81 [95% CI 1.67-4.70]), difficulties maintaining sleep (2.07 [1.35-3.18]), early morning awakening (3.03 [1.91-4.81]), insomnia (2.21 [1.46-3.35]), excessive daytime sleepiness (2.85 [1.79-4.55]), and snoring (3.31 [2.07-5.31]). Three insomnia symptoms at baseline increased the risk of CRS at follow-up by 5.00 (1.93-12.99). CONCLUSIONS Incident CRS is associated with impaired sleep quality and excessive daytime sleepiness. Insomnia symptoms may be a risk factor for the development of CRS.
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Affiliation(s)
- Caroline Bengtsson
- Department of Surgical Sciences, Otorhinolaryngology, Head and Neck Surgery, Uppsala University, Uppsala, Sweden
| | - Lars Jonsson
- Department of Surgical Sciences, Otorhinolaryngology, Head and Neck Surgery, Uppsala University, Uppsala, Sweden
| | - Mats Holmström
- Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska University Hospital, Huddinge, Sweden
| | - Johan Hellgren
- Department of Otorhinolaryngology, Head and Neck Surgery, Sahlgrenska Academy, Gothenburg, Institute of Clinical Science, University of Gothenburg, Sweden
| | - Karl Franklin
- Department of Surgical and Perioperative Sciences, Surgery, Umeå University, Umeå, Sweden
| | - Tórarinn Gíslason
- Department of Respiratory Medicine and Sleep, University of Iceland, Reykjavik, Iceland
| | - Mathias Holm
- Department of Occupational and Environmental Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Ane Johannessen
- Department of Global Public Health and Primary Care, Centre for International Health, University of Bergen, Bergen, Norway.,Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - Rain Jõgi
- Department of Pulmonology, Tartu University Hospital, Tartu, Estonia
| | - Vivi Schlünssen
- Department of Public Health, Aarhus University, Aarhus, Denmark, National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Christer Janson
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Eva Lindberg
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
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Proteomics of exhaled breath condensate in stable COPD and non-COPD controls using tandem mass tags (TMTs) quantitative mass spectrometry: A pilot study. J Proteomics 2019; 206:103392. [PMID: 31129269 DOI: 10.1016/j.jprot.2019.103392] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 05/04/2019] [Accepted: 05/14/2019] [Indexed: 01/08/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is a type of obstructive lung disease characterized by long-term breathing problems and poor airflow. Exhaled breath condensate (EBC) is now a safe and clinically significant measurement which has a huge potential to measure biomarkers in COPD. Previous studies profiled the pooled EBC samples from COPD or control participants due to technological limitations. In our study, 32 COPD patients and 28 control individuals were enrolled, and their EBC were collected. After matching with sex, age and smoking history, EBC samples of 19 COPD patients and 19 control individuals were analyzed using tandem mass tags (TMTs) quantitative mass spectrometry individually. A total of 257 proteins were identified. Compared with control group, 24 proteins (15 upregulated and 9 downregulated) were differentially expressed in COPD patients. The GO analysis of these differential proteins expressed mostly in the cytoplasm, and the KEGG analysis showed they had a predominant role in inflammatory response. And ACTB, UBC, TUBB and CCT2 involving in cell motility and cytoskeleton played important role in the interaction-net of these proteins. To sum up, we found some proteins might be novel biomarkers of EBC in COPD and TMTs was available to analyze proteomics in individual EBC samples. SIGNIFICANCE: It is still difficult to understand the mechanism of airway inflammation in COPD. Exhaled breath condensate(EBC) might be a great study object, but due to technological limitations, researchers preferred to use pooled EBC samples. This study analyzed individual EBC samples, which would deepen our understanding of the pathogenesis of COPD. And this method can be applied to individual EBC samples for further airway investigations of different purpose and different complexity.
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12
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Jubinville É, Routhier J, Maranda-Robitaille M, Pineault M, Milad N, Talbot M, Beaulieu MJ, Aubin S, Paré MÈ, Laplante M, Morissette MC. Pharmacological activation of liver X receptor during cigarette smoke exposure adversely affects alveolar macrophages and pulmonary surfactant homeostasis. Am J Physiol Lung Cell Mol Physiol 2019; 316:L669-L678. [PMID: 30702343 DOI: 10.1152/ajplung.00482.2018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Smoking alters pulmonary reverse lipid transport and leads to intracellular lipid accumulation in alveolar macrophages. We investigated whether stimulating reverse lipid transport with an agonist of the liver X receptor (LXR) would help alveolar macrophages limit lipid accumulation and dampen lung inflammation in response to cigarette smoke. Mice were exposed to cigarette smoke and treated intraperitoneally with the LXR agonist T0901317. Expression of lipid capture and lipid export genes was assessed in lung tissue and alveolar macrophages. Pulmonary inflammation was assessed in the bronchoalveolar lavage (BAL). Finally, cholesterol efflux capacity and pulmonary surfactant levels were determined. In room air-exposed mice, T0901317 increased the expression of lipid export genes in macrophages and the whole lung and increased cholesterol efflux capacity without inducing inflammation or affecting the pulmonary surfactant. However, cigarette smoke-exposed mice treated with T0901317 showed a marked increase in BAL neutrophils, IL-1α, C-C motif chemokine ligand 2, and granulocyte-colony-stimulating factor levels. T0901317 treatment in cigarette smoke-exposed mice failed to increase the ability of alveolar macrophages to export cholesterol and markedly exacerbated IL-1α release. Finally, T0901317 led to pulmonary surfactant depletion only in cigarette smoke-exposed mice. This study shows that hyperactivation of LXR and the associated lipid capture/export mechanisms only have minor pulmonary effects on the normal lung. However, in the context of cigarette smoke exposure, where the pulmonary surfactant is constantly oxidized, hyperactivation of LXR has dramatic adverse effects, once again showing the central role of lipid homeostasis in the pulmonary response to cigarette smoke exposure.
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Affiliation(s)
- Éric Jubinville
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Joanie Routhier
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | | | - Marie Pineault
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Nadia Milad
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Maude Talbot
- Faculty of Medicine, Université Laval , Quebec City, Quebec , Canada
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Marie-Josée Beaulieu
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Sophie Aubin
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Marie-Ève Paré
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
| | - Mathieu Laplante
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
- Department of Medicine, Université Laval , Quebec City, Quebec , Canada
- Centre de Recherche sur le Cancer de l'Université Laval, Quebec City, Quebec, Canada
| | - Mathieu C Morissette
- Quebec Heart and Lung Institute, Université Laval , Quebec City, Quebec , Canada
- Department of Medicine, Université Laval , Quebec City, Quebec , Canada
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13
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Heightened olfactory dysfunction and oral irritation among chronic smokers and heightened propylthiouracil (PROP) bitterness among menthol smokers. Physiol Behav 2018; 201:111-122. [PMID: 30557565 DOI: 10.1016/j.physbeh.2018.12.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 12/05/2018] [Accepted: 12/13/2018] [Indexed: 12/14/2022]
Abstract
Chronic cigarette smoking may influence chemosensory function, which in turn, may affect cigarette usage. Because menthol in cigarettes can attenuate nicotine bitterness, choice of menthol/nonmenthol cigarettes may be influenced by ability to perceive bitterness. We examined chemosensory function of chronic smokers, hypothesizing they would show altered function in comparison to non-smokers and by menthol cigarette preference. In laboratory-based measures, chronic smokers (N = 135; 84 menthol smokers) self-reported their chemosensory function and participated in smell (identification task with perceived intensity) and taste (quinine and NaCl intensity on tongue-tip and whole mouth) testing. A taste genetics probe (propylthiouracil (PROP) bitterness) also was assessed. Self-reported and measured chemosensory function were compared with nationally-representative 2013-2014 National Health and Nutrition Examination Survey (NHANES) data generated with similar measures. The taste measures also were compared between smokers and age- and sex-matched non-smokers from a laboratory database. Frequencies of self-reported smell and taste alterations among smokers exceeded NHANES prevalence estimates for non-smokers. The rate of measured smell dysfunction also exceeded NHANES prevalence for hyposmia. Compared to non-smokers, smokers reported elevated tongue-tip and whole mouth intensities from 1 M NaCl, with no significant differences in whole mouth quinine or 0.32 M NaCl. Inconsistent with previous hypotheses, smokers were not more likely to report depressed PROP bitterness than non-smokers. However, as expected, menthol smokers reported greater PROP bitterness than non-menthol smokers. In conclusion, chemosensory alterations were more frequent among chronic smokers, including hyposmia and heightened intensity from NaCl at an oral-irritant concentration. PROP supertasters were most likely to prefer mentholated cigarettes.
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Yii ACA, Tay T, Choo XN, Koh MSY, Tee AKH, Wang D. Precision medicine in united airways disease: A "treatable traits" approach. Allergy 2018; 73:1964-1978. [PMID: 29869791 DOI: 10.1111/all.13496] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2018] [Indexed: 12/21/2022]
Abstract
United airways disease (UAD) is the concept that the upper and lower airways, which are anatomically and immunologically related, form a single organ. According to this concept, upper and lower airway diseases are frequently comorbid because they reflect manifestations of a single underlying disease at different sites of the respiratory tract. Allergic asthma-allergic rhinitis is the archetypal UAD, but emerging data indicate that UAD is a heterogeneous condition and consists of multiple phenotypes (observable clinical characteristics) and endotypes (pathobiologic mechanisms). The UAD paradigm also extends to myriad sinonasal diseases (eg, chronic rhinosinusitis with or without nasal polyps) and lower airway diseases (eg, bronchiectasis, chronic obstructive pulmonary disease). Here, we review currently known phenoendotypes of UAD and propose a "treatable traits" approach for the classification and management of UAD, wherein pathophysiological mechanisms and factors contributing to disease are identified and targeted for treatment. Treatable traits in UAD can be analyzed according to a framework comprising airway inflammation (eosinophilic, neutrophilic), impaired airway mucosal defense (impaired mucociliary clearance, antibody deficiency), and exogenous cofactors (allergic sensitizers, tobacco smoke, microbes). Appreciation of treatable traits is necessary in advancing the effort to deliver precise treatments and achieve better outcomes in patients with UAD.
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Affiliation(s)
- A. C. A. Yii
- Department of Respiratory and Critical Care Medicine Changi General Hospital Singapore
- Duke‐National University of Singapore Medical School Singapore
| | - T.‐R. Tay
- Department of Respiratory and Critical Care Medicine Changi General Hospital Singapore
| | - X. N. Choo
- Department of Respiratory and Critical Care Medicine Changi General Hospital Singapore
| | - M. S. Y. Koh
- Department of Respiratory and Critical Care Medicine Singapore General Hospital Singapore
- Duke‐National University of Singapore Medical School Singapore
| | - A. K. H. Tee
- Department of Respiratory and Critical Care Medicine Changi General Hospital Singapore
| | - D.‐Y. Wang
- Department of Otolaryngology National University of Singapore Singapore
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15
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Titz B, Kogel U, Martin F, Schlage WK, Xiang Y, Nury C, Dijon S, Baumer K, Peric D, Bornand D, Dulize R, Phillips B, Leroy P, Vuillaume G, Lebrun S, Elamin A, Guedj E, Trivedi K, Ivanov NV, Vanscheeuwijck P, Peitsch MC, Hoeng J. A 90-day OECD TG 413 rat inhalation study with systems toxicology endpoints demonstrates reduced exposure effects of the aerosol from the carbon heated tobacco product version 1.2 (CHTP1.2) compared with cigarette smoke. II. Systems toxicology assessment. Food Chem Toxicol 2018; 115:284-301. [PMID: 29545142 DOI: 10.1016/j.fct.2018.02.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 02/27/2018] [Indexed: 12/11/2022]
Abstract
Modified risk tobacco products (MRTPs) have the potential to reduce smoking-related health risks. The Carbon Heated Tobacco Product 1.2 (CHTP1.2) is a potential MRTP that uses a pressed carbon heat source to generate an aerosol by heating tobacco. Here, we report the results from the systems toxicology arm of a 90-day rat inhalation study (OECD test guideline 413) to assess the effects of CHTP1.2 aerosol compared with cigarette smoke (CS). Transcriptomics, proteomics, and lipidomics analyses complemented the standard endpoints. In the respiratory nasal epithelium, CS induced an adaptive tissue and inflammatory response, which was much weaker after CHTP1.2 aerosol exposure, mostly limited to the highest CHTP1.2 concentration (at twice the 3R4F CS concentration: 50 vs. 23 μg nicotine/L), in female rats. In the lungs, the effects of CS exposure included inflammatory and cellular stress responses, which were absent or much lower after CHTP1.2 aerosol exposure. Outside of the respiratory tract, CS and CHTP1.2 aerosol induced effects that were previously associated with exposure to any nicotine-containing aerosol, e.g., lower lipid concentrations in serum. Overall, this systems toxicology analysis complements and confirms the results from classical toxicological endpoints and further suggests potentially reduced respiratory health risks of CHTP1.2.
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Affiliation(s)
- Bjoern Titz
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Ulrike Kogel
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Florian Martin
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Walter K Schlage
- Biology Consultant, Max-Baermann-Str. 21, 51429, Bergisch Gladbach, Germany
| | - Yang Xiang
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Catherine Nury
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Sophie Dijon
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Karine Baumer
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Dariusz Peric
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - David Bornand
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Remi Dulize
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Blaine Phillips
- PMI R&D, Philip Morris International Research Laboratories Pte. Ltd., Science Park II, Singapore(2)
| | - Patrice Leroy
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Gregory Vuillaume
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Stefan Lebrun
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Ashraf Elamin
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Emmanuel Guedj
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Keyur Trivedi
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Nikolai V Ivanov
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Patrick Vanscheeuwijck
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2)
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchatel, Switzerland(2).
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Forty years of reference values for respiratory system impedance in adults: 1977–2017. Respir Med 2018; 136:37-47. [DOI: 10.1016/j.rmed.2018.01.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/22/2018] [Accepted: 01/27/2018] [Indexed: 11/22/2022]
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17
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Dülger S, Akdeniz Ö, Solmaz F, Şengören Dikiş Ö, Yildiz T. Evaluation of nasal mucociliary clearance using saccharin test in smokers: A prospective study. CLINICAL RESPIRATORY JOURNAL 2017; 12:1706-1710. [PMID: 29105352 DOI: 10.1111/crj.12733] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/17/2017] [Accepted: 10/22/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND AND AIM Nasal mucociliary clearance time (NMCT) can be measured with the saccharine clearance test which is an inexpensive and easy method. The aim of the present study was to compare and evaluate NMCT using the saccharine clearance test in smokers and non-smokers. MATERIALS AND METHODS Eighty-five patients whose ages ranged from 18 to 65 years were included in the study. Fifty of the patients were smokers (Group 1) while 35 were healthy, non-smoking volunteers (Group 2). Saccharin clearance test was used to evaluate NMCT in both groups. The results obtained were compared and the statistical analyses were performed using the Statistical Package for Social Sciences (SPSS). RESULTS NMCT was statistically significantly higher in Group 1 as compared to Group 2 (P < .001, Mann-Whitney U test). However, in cumulative smoking duration (pack-year), Fagerström test values and gender categories, there was no statistically significant difference in the average NMCT values of the two groups (P = .943 vs P = .812 respectively), P = .45). CONCLUSION Mucociliary activity, the primary defence mechanism of the respiratory epithelium, is significantly depressed in smokers. Our findings showed that the said depression is not associated with the number of cigarettes smoked, duration of smoking or nicotine dependence.
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Affiliation(s)
- Seyhan Dülger
- Department of Pulmonology, Yüksek İhtisas Education and Training Hospital, Bursa, Turkey
| | - Önder Akdeniz
- Department of Autorhinolaryngology, Esentepe Hospital, Bursa, Turkey
| | - Fevzi Solmaz
- Department of Otorhinolaryngology, Yüksek İhtisas Education and Training Hospital, Bursa, Turkey
| | - Özlem Şengören Dikiş
- Department of Pulmonology, Yüksek İhtisas Education and Training Hospital, Bursa, Turkey
| | - Tekin Yildiz
- Department of Pulmonology, Yüksek İhtisas Education and Training Hospital, Bursa, Turkey
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18
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The lung microbiome. Emerg Top Life Sci 2017; 1:313-324. [PMID: 33525774 DOI: 10.1042/etls20170043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/31/2017] [Accepted: 09/29/2017] [Indexed: 12/17/2022]
Abstract
Historically, our understanding of lung microbiology has relied on insight gained through culture-based diagnostic approaches that employ selective culture conditions to isolate specific pathogens. The relatively recent development of culture-independent microbiota-profiling techniques, particularly 16S rRNA (ribosomal ribonucleic acid) gene amplicon sequencing, has enabled more comprehensive characterisation of the microbial content of respiratory samples. The widespread application of such techniques has led to a fundamental shift in our view of respiratory microbiology. Rather than a sterile lung environment that can become colonised by microbes during infection, it appears that a more nuanced balance exists between what we consider respiratory health and disease, mediated by mechanisms that influence the clearance of microbes from the lungs. Where airway defences are compromised, the ongoing transient exposure of the lower airways to microbes can lead to the establishment of complex microbial communities within the lung. Importantly, the characteristics of these communities, and the manner in which they influence lung pathogenesis, can be very different from those of their constituent members when viewed in isolation. The lung microbiome, a construct that incorporates microbes, their genetic material, and the products of microbial genes, is increasingly central to our understanding of the regulation of respiratory physiology and the processes that underlie lung pathogenesis.
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Talikka M, Martin F, Sewer A, Vuillaume G, Leroy P, Luettich K, Chaudhary N, Peck MJ, Peitsch MC, Hoeng J. Mechanistic Evaluation of the Impact of Smoking and Chronic Obstructive Pulmonary Disease on the Nasal Epithelium. CLINICAL MEDICINE INSIGHTS-CIRCULATORY RESPIRATORY AND PULMONARY MEDICINE 2017; 11:1179548417710928. [PMID: 28620266 PMCID: PMC5466113 DOI: 10.1177/1179548417710928] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 04/04/2017] [Indexed: 12/27/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is one of the major causes of chronic morbidity and mortality worldwide. The development of markers of COPD onset is hampered by the lack of accessibility to the primary target tissue, and there is a need to consider other sample sources as surrogates for biomarker research. Airborne toxicants pass through the nasal epithelium before reaching the lower airways, and the similarity with bronchial histology makes it an attractive surrogate for lower airways. In this work, we describe the transcriptomics findings from the nasal epithelia of subjects enrolled in a clinical study focusing on the identification of COPD biomarkers. Transcriptomic data were analyzed using the biological network approach that enabled us to pinpoint the biological processes affected in the upper respiratory tract in response to smoking and mild-to-moderate COPD. Our results indicated that nasal and lower airway immune responses were considerably different in COPD subjects and caution should be exercised when using upper airway samples as a surrogate for the lower airway. Nevertheless, the network approach described here could present a sensitive means of identifying smokers at risk of developing COPD.
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Affiliation(s)
- Marja Talikka
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Florian Martin
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Alain Sewer
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Grégory Vuillaume
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Patrice Leroy
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Karsta Luettich
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Nveed Chaudhary
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Michael J Peck
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Manuel C Peitsch
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
| | - Julia Hoeng
- Philip Morris Products SA and Research & Development (R&D), Philip Morris International, Neuchâtel, Switzerland
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Uzeloto JS, Ramos D, C F Freire AP, G D Christofaro D, Mara C Ramos E. Nasal mucociliary transportability of male and female smokers. Braz J Otorhinolaryngol 2017; 84:311-317. [PMID: 28442373 PMCID: PMC9449236 DOI: 10.1016/j.bjorl.2017.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/17/2017] [Accepted: 03/23/2017] [Indexed: 11/29/2022] Open
Abstract
Introduction Female smoker's present increased susceptibility to several diseases when compared to the opposite gender. However, there are no studies showing differences in nasal mucociliary transport behavior between male and female smokers. Objective To compare the nasal mucociliary transportability in male and female smokers and non-smokers, taking into consideration age, anthropometric data, smoking load and pulmonary function. Methods The analysis included 139 individuals (33 men and 37 women smokers and 32 men and 37 women non-smokers). All participants answered an initial interview to obtain personal data and smoking load. Anthropometric data and carbon monoxide in the exhaled air were assessed. Individuals also performed pulmonary function test and Saccharin Transit Time test. To compare saccharin transit time values between men and women, smokers and non-smokers, stratification of all independent variables was performed (sociodemographic, smoking and respiratory variables) into two categories: below and above the median values. Results There was no difference between men and women, smokers and non-smokers, regarding nasal mucociliary transportability. Significant differences were only observed between non-smokers. Among those with less forced vital capacity values (<97.37% of predicted), women presented mucociliary transport faster than men. Moreover, it was observed influence of BMI and COex (women smokers), FCV and FEV1 (men non-smokers) and FEF25–75% (women non-smokers) on saccharin transit time values. Conclusion Based on the findings of this study, nasal mucociliary transport in male and female adult smokers, apparently healthy, are similar.
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Affiliation(s)
- Juliana Souza Uzeloto
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, São Paulo, SP, Brazil.
| | - Dionei Ramos
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, São Paulo, SP, Brazil
| | - Ana Paula C F Freire
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, São Paulo, SP, Brazil
| | - Diego G D Christofaro
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, São Paulo, SP, Brazil
| | - Ercy Mara C Ramos
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências e Tecnologia, São Paulo, SP, Brazil
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Cavalcante de Sá M, Nakagawa NK, Saldiva de André CD, Carvalho-Oliveira R, de Santana Carvalho T, Nicola ML, de André PA, Nascimento Saldiva PH, Vaisberg M. Aerobic exercise in polluted urban environments: effects on airway defense mechanisms in young healthy amateur runners. J Breath Res 2016; 10:046018. [DOI: 10.1088/1752-7163/10/4/046018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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22
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Zhou Z, Chen P, Peng H. Are healthy smokers really healthy? Tob Induc Dis 2016; 14:35. [PMID: 27891067 PMCID: PMC5111288 DOI: 10.1186/s12971-016-0101-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 11/10/2016] [Indexed: 12/21/2022] Open
Abstract
Cigarette smoke contains more than 4500 chemicals which have toxic, mutagenic and carcinogenic effects. Strong evidences have shown that current smokers take a significantly higher risk of cardiovascular diseases, chronic obstructive pulmonary disease (COPD) and lung cancer than nonsmokers. However, less attention has been paid to the smoking induced abnormalities in the individuals defined as healthy smokers who are normal with spirometry, radiographic images, routine physical exam and categorized as healthy control group in many researches. Actually, ‘healthy smokers’ are not healthy. This narrative review focuses on the smoking related pathophysiologic changes mainly in the respiratory system of healthy smokers, including inflammation and immune changes, genetic alterations, structural changes and pulmonary dysfunction.
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Affiliation(s)
- Zijing Zhou
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, Hunan 410011 People's Republic of China
| | - Ping Chen
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, Hunan 410011 People's Republic of China
| | - Hong Peng
- Department of Respiratory Medicine, the Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, Hunan 410011 People's Republic of China
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Evaluation of the Tobacco Heating System 2.2. Part 7: Systems toxicological assessment of a mentholated version revealed reduced cellular and molecular exposure effects compared with mentholated and non-mentholated cigarette smoke. Regul Toxicol Pharmacol 2016; 81 Suppl 2:S123-S138. [DOI: 10.1016/j.yrtph.2016.11.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 10/31/2016] [Accepted: 11/01/2016] [Indexed: 12/29/2022]
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24
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Neves CDC, Lacerda ACR, Lage VKS, Lima LP, Tossige-Gomes R, Fonseca SF, Rocha-Vieira E, Teixeira MM, Mendonça VA. Oxidative stress and skeletal muscle dysfunction are present in healthy smokers. ACTA ACUST UNITED AC 2016; 49:e5512. [PMID: 27783809 PMCID: PMC5089233 DOI: 10.1590/1414-431x20165512] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Accepted: 09/12/2016] [Indexed: 12/21/2022]
Abstract
Chronic exposure to cigarette smoke seems to be related to an increase of pro-inflammatory cytokines, oxidative stress and changes in muscular and physical performances of healthy smokers. However, these parameters have not yet been evaluated simultaneously in previous studies. The participants of this study were healthy males divided into two groups: smokers (n=20) and non-smokers (n=20). Inflammation was evaluated by measuring plasma levels of the cytokines IL-10, IL-6 e TNF-α, and of the soluble receptors sTNFR1 and sTNFR2. Oxidative stress was evaluated by determination of thiobarbituric acid reactive substances (TBARS) plasma levels, total antioxidant capacity of plasma and erythrocytes activity of the antioxidant enzymes superoxide dismutase (SOD) and catalase. Muscular performance was evaluated by measuring the peak torque of knee flexors and extensors, and by determining the total work of the knee extensors. Physical performance was assessed by measuring the peak oxygen uptake (VO2 peak), the maximum heart rate (HRmax) and the walking distance in the shuttle walking test. Smokers showed an increase in the levels of the sTNFR1 and TBARS and a decrease in the total antioxidant capacity of plasma, in the catalase activity and in the total work (P<0.05). IL-6, IL-10, sTNFR2, SOD, peak torque, VO2 peak, HRmax and walking distance were similar between groups. Smokers presented increased oxidative stress and skeletal muscle dysfunction, demonstrating that the changes in molecular and muscular parameters occur simultaneously in healthy smokers.
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Affiliation(s)
- C D C Neves
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil.,Laboratório de Inflamação e Metabolismo, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - A C R Lacerda
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - V K S Lage
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil.,Laboratório de Inflamação e Metabolismo, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - L P Lima
- Laboratório de Inflamação e Metabolismo, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - R Tossige-Gomes
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - S F Fonseca
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - E Rocha-Vieira
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil
| | - M M Teixeira
- Laboratório de Imunofarmacologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - V A Mendonça
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Sociedade Brasileira de Fisiologia, Diamantina, MG, Brasil.,Laboratório de Inflamação e Metabolismo, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
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Utiyama DMO, Yoshida CT, Goto DM, de Santana Carvalho T, de Paula Santos U, Koczulla AR, Saldiva PHN, Nakagawa NK. The effects of smoking and smoking cessation on nasal mucociliary clearance, mucus properties and inflammation. Clinics (Sao Paulo) 2016; 71:344-50. [PMID: 27438569 PMCID: PMC4930664 DOI: 10.6061/clinics/2016(06)10] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/05/2016] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE The aim of the present study was to assess nasal mucociliary clearance, mucus properties and inflammation in smokers and subjects enrolled in a Smoking Cessation Program (referred to as quitters). METHOD A total of 33 subjects with a median (IQR) smoking history of 34 (20-58) pack years were examined for nasal mucociliary clearance using a saccharine transit test, mucus properties using contact angle and sneeze clearability tests, and quantification of inflammatory and epithelial cells, IL-6 and IL-8 concentrations in nasal lavage fluid. Twenty quitters (mean age: 51 years, 9 male) were assessed at baseline, 1 month, 3 months and 12 months after smoking cessation, and 13 smokers (mean age: 52 years, 6 male) were assessed at baseline and after 12 months. Clinicaltrials.gov: NCT02136550. RESULTS Smokers and quitters showed similar demographic characteristics and morbidities. At baseline, all subjects showed impaired nasal mucociliary clearance (mean 17.6 min), although 63% and 85% of the quitters demonstrated significant nasal mucociliary clearance improvement at 1 month and 12 months, respectively. At 12 months, quitters also showed mucus sneeze clearability improvement (∼26%), an increased number of macrophages (2-fold) and no changes in mucus contact angle or cytokine concentrations. CONCLUSION This study showed that smoking cessation induced early improvements in nasal mucociliary clearance independent of mucus properties and inflammation. Changes in mucus properties were observed after only 12 months of smoking cessation.
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Affiliation(s)
- Daniela Mitiyo Odagiri Utiyama
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional</org-name>LIM-34, São Paulo/SP, Brazil
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Patologia, LIM-5, São Paulo/SP, Brazil
| | - Carolina Tieko Yoshida
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional</org-name>LIM-34, São Paulo/SP, Brazil
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Patologia, LIM-5, São Paulo/SP, Brazil
| | | | - Tômas de Santana Carvalho
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional</org-name>LIM-34, São Paulo/SP, Brazil
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Patologia, LIM-5, São Paulo/SP, Brazil
| | - Ubiratan de Paula Santos
- Faculdade de Medicina da Universidade de São Paulo, Heart Institute (InCor), Pulmonary Division, Smoking Cessation Group, São Paulo/SP, Brazil
| | | | | | - Naomi Kondo Nakagawa
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Fisioterapia, Fonoaudiologia e Terapia Ocupacional</org-name>LIM-34, São Paulo/SP, Brazil
- Faculdade de Medicina da Universidade de São Paulo, Departamento de Patologia, LIM-5, São Paulo/SP, Brazil
- E-mail:
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Lärstad M, Almstrand AC, Larsson P, Bake B, Larsson S, Ljungström E, Mirgorodskaya E, Olin AC. Surfactant Protein A in Exhaled Endogenous Particles Is Decreased in Chronic Obstructive Pulmonary Disease (COPD) Patients: A Pilot Study. PLoS One 2015; 10:e0144463. [PMID: 26656890 PMCID: PMC4676630 DOI: 10.1371/journal.pone.0144463] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 11/18/2015] [Indexed: 01/24/2023] Open
Abstract
Background Exhaled, endogenous particles are formed from the epithelial lining fluid in small airways, where surfactant protein A (SP-A) plays an important role in pulmonary host defense. Based on the knowledge that chronic obstructive pulmonary disease (COPD) starts in the small airway epithelium, we hypothesized that chronic inflammation modulates peripheral exhaled particle SP-A and albumin levels. The main objective of this explorative study was to compare the SP-A and albumin contents in exhaled particles from patients with COPD and healthy subjects and to determine exhaled particle number concentrations. Methods Patients with stable COPD ranging from moderate to very severe (n = 13), and healthy non-smoking subjects (n = 12) were studied. Subjects performed repeated breath maneuvers allowing for airway closure and re-opening, and exhaled particles were optically counted and collected on a membrane using the novel PExA® instrument setup. Immunoassays were used to quantify SP-A and albumin. Results COPD patients exhibited significantly lower SP-A mass content of the exhaled particles (2.7 vs. 3.9 weight percent, p = 0.036) and lower particle number concentration (p<0.0001) than healthy subjects. Albumin mass contents were similar for both groups. Conclusions Decreased levels of SP-A may lead to impaired host defense functions of surfactant in the airways, contributing to increased susceptibility to COPD exacerbations. SP-A in exhaled particles from small airways may represent a promising non-invasive biomarker of disease in COPD patients.
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Affiliation(s)
- Mona Lärstad
- Department of Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- * E-mail:
| | - Ann-Charlotte Almstrand
- Department of Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Per Larsson
- Department of Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Björn Bake
- Department of Respiratory Medicine and Allergology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Sven Larsson
- Department of Respiratory Medicine and Allergology, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Evert Ljungström
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Ekaterina Mirgorodskaya
- Department of Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Anna-Carin Olin
- Department of Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
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Leite MR, Ramos EMC, Kalva-Filho CA, Freire APCF, de Alencar Silva BS, Nicolino J, de Toledo-Arruda AC, Papoti M, Vanderlei LCM, Ramos D. Effects of 12 weeks of aerobic training on autonomic modulation, mucociliary clearance, and aerobic parameters in patients with COPD. Int J Chron Obstruct Pulmon Dis 2015; 10:2549-57. [PMID: 26648712 PMCID: PMC4664442 DOI: 10.2147/copd.s81363] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Introduction Patients with chronic obstructive pulmonary disease (COPD) exhibit aerobic function, autonomic nervous system, and mucociliary clearance alterations. These parameters can be attenuated by aerobic training, which can be applied with continuous or interval efforts. However, the possible effects of aerobic training, using progressively both continuous and interval sessions (ie, linear periodization), require further investigation. Aim To analyze the effects of 12-week aerobic training using continuous and interval sessions on autonomic modulation, mucociliary clearance, and aerobic function in patients with COPD. Methods Sixteen patients with COPD were divided into an aerobic (continuous and interval) training group (AT) (n=10) and a control group (CG) (n=6). An incremental test (initial speed of 2.0 km·h−1, constant slope of 3%, and increments of 0.5 km·h−1 every 2 minutes) was performed. The training group underwent training for 4 weeks at 60% of the peak velocity reached in the incremental test (vVO2peak) (50 minutes of continuous effort), followed by 4 weeks of sessions at 75% of vVO2peak (30 minutes of continuous effort), and 4 weeks of interval training (5×3-minute effort at vVO2peak, separated by 1 minute of passive recovery). Intensities were adjusted through an incremental test performed at the end of each period. Results The AT presented an increase in the high frequency index (ms2) (P=0.04), peak oxygen uptake (VO2peak) (P=0.01), vVO2peak (P=0.04), and anaerobic threshold (P=0.02). No significant changes were observed in the CG (P>0.21) group. Neither of the groups presented changes in mucociliary clearance after 12 weeks (AT: P=0.94 and CG: P=0.69). Conclusion Twelve weeks of aerobic training (continuous and interval sessions) positively influenced the autonomic modulation and aerobic parameters in patients with COPD. However, mucociliary clearance was not affected by aerobic training.
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Affiliation(s)
- Marceli Rocha Leite
- Department of Physiotherapy, São Paulo State University, Presidente Prudente, Brazil
| | | | | | | | | | - Juliana Nicolino
- Department of Physiotherapy, São Paulo State University, Presidente Prudente, Brazil
| | | | - Marcelo Papoti
- School of Physical Education and Sport of Ribeirão Preto, São Paulo University, Ribeirão Preto, São Paulo, Brazil
| | | | - Dionei Ramos
- Department of Physiotherapy, São Paulo State University, Presidente Prudente, Brazil
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Miłkowska-Dymanowska J, Białas AJ, Zalewska-Janowska A, Górski P, Piotrowski WJ. Underrecognized comorbidities of chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2015. [PMID: 26203239 PMCID: PMC4507790 DOI: 10.2147/copd.s82420] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
COPD is associated with different comorbid diseases, and their frequency increases with age. Comorbidities severely impact costs of health care, intensity of symptoms, quality of life and, most importantly, may contribute to life span shortening. Some comorbidities are well acknowledged and established in doctors’ awareness. However, both everyday practice and literature searches provide evidence of other, less recognized diseases, which are frequently associated with COPD. We call them underrecognized comorbidities, and the reason why this is so may be related to their relatively low clinical significance, inefficient literature data, or data ambiguity. In this review, we describe rhinosinusitis, skin abnormalities, eye diseases, different endocrinological disorders, and gastroesophageal reflux disease. Possible links to COPD pathogenesis have been discussed, if the data were available.
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Affiliation(s)
- Joanna Miłkowska-Dymanowska
- Department of Pneumology and Allergy, 1st Chair of Internal Medicine, Medical University of Lodz, Łódź, Poland ; Healthy Aging Research Centre (HARC), Medical University of Lodz, Łódź, Poland
| | - Adam J Białas
- Department of Pneumology and Allergy, 1st Chair of Internal Medicine, Medical University of Lodz, Łódź, Poland ; Healthy Aging Research Centre (HARC), Medical University of Lodz, Łódź, Poland
| | - Anna Zalewska-Janowska
- Unit of Psychodermatology, Chair of Clinical Immunology and Microbiology, Medical University of Lodz, Łódź, Poland
| | - Paweł Górski
- Department of Pneumology and Allergy, 1st Chair of Internal Medicine, Medical University of Lodz, Łódź, Poland ; Healthy Aging Research Centre (HARC), Medical University of Lodz, Łódź, Poland
| | - Wojciech J Piotrowski
- Department of Pneumology and Allergy, 1st Chair of Internal Medicine, Medical University of Lodz, Łódź, Poland ; Healthy Aging Research Centre (HARC), Medical University of Lodz, Łódź, Poland
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Mirowsky J, Gordon T. Noninvasive effects measurements for air pollution human studies: methods, analysis, and implications. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2015; 25:354-80. [PMID: 25605444 PMCID: PMC6659729 DOI: 10.1038/jes.2014.93] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/26/2014] [Accepted: 11/05/2014] [Indexed: 05/09/2023]
Abstract
Human exposure studies, compared with cell and animal models, are heavily relied upon to study the associations between health effects in humans and air pollutant inhalation. Human studies vary in exposure methodology, with some work conducted in controlled settings, whereas other studies are conducted in ambient environments. Human studies can also vary in the health metrics explored, as there exists a myriad of health effect end points commonly measured. In this review, we compiled mini reviews of the most commonly used noninvasive health effect end points that are suitable for panel studies of air pollution, broken into cardiovascular end points, respiratory end points, and biomarkers of effect from biological specimens. Pertinent information regarding each health end point and the suggested methods for mobile collection in the field are assessed. In addition, the clinical implications for each health end point are summarized, along with the factors identified that can modify each measurement. Finally, the important research findings regarding each health end point and air pollutant exposures were reviewed. It appeared that most of the adverse health effects end points explored were found to positively correlate with pollutant levels, although differences in study design, pollutants measured, and study population were found to influence the magnitude of these effects. Thus, this review is intended to act as a guide for researchers interested in conducting human exposure studies of air pollutants while in the field, although there can be a wider application for using these end points in many epidemiological study designs.
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Affiliation(s)
- Jaime Mirowsky
- Department of Environmental Medicine, New York University School of Medicine, Nelson Institute of Environmental Medicine, Tuxedo, New York, USA
| | - Terry Gordon
- Department of Environmental Medicine, New York University School of Medicine, Nelson Institute of Environmental Medicine, Tuxedo, New York, USA
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Exhaled Breath Condensate: Technical and Diagnostic Aspects. ScientificWorldJournal 2015; 2015:435160. [PMID: 26106641 PMCID: PMC4461795 DOI: 10.1155/2015/435160] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 04/21/2015] [Indexed: 01/18/2023] Open
Abstract
Purpose. The aim of this study was to evaluate the 30-year progress of research on exhaled breath condensate in a disease-based approach. Methods. We searched PubMed/Medline, ScienceDirect, and Google Scholar using the following keywords: exhaled breath condensate (EBC), biomarkers, pH, asthma, gastroesophageal reflux (GERD), smoking, COPD, lung cancer, NSCLC, mechanical ventilation, cystic fibrosis, pulmonary arterial hypertension (PAH), idiopathic pulmonary fibrosis, interstitial lung diseases, obstructive sleep apnea (OSA), and drugs. Results. We found 12600 related articles in total in Google Scholar, 1807 in ScienceDirect, and 1081 in PubMed/Medline, published from 1980 to October 2014. 228 original investigation and review articles were eligible. Conclusions. There is rapidly increasing number of innovative articles, covering all the areas of modern respiratory medicine and expanding EBC potential clinical applications to other fields of internal medicine. However, the majority of published papers represent the results of small-scale studies and thus current knowledge must be further evaluated in large cohorts. In regard to the potential clinical use of EBC-analysis, several limitations must be pointed out, including poor reproducibility of biomarkers and absence of large surveys towards determination of reference-normal values. In conclusion, contemporary EBC-analysis is an intriguing achievement, but still in early stage when it comes to its application in clinical practice.
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Wang F, Zou Y, Shen Y, Zhong Y, Lv Y, Huang D, Chen K, Li Q, Qing L, Xia B, Su C, Ma S, Yang X. Synergistic impaired effect between smoking and manganese dust exposure on pulmonary ventilation function in Guangxi manganese-exposed workers healthy cohort (GXMEWHC). PLoS One 2015; 10:e0116558. [PMID: 25664879 PMCID: PMC4321994 DOI: 10.1371/journal.pone.0116558] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 12/10/2014] [Indexed: 11/18/2022] Open
Abstract
Purpose The aims of this study were to investigate the effects of manganese (Mn) dust exposure on lung functions and evaluate the potential synergistic effect between smoking and Mn dust exposure among refinery workers. Methods A retrospective study including 1658 workers in a ferromanganese refinery was conducted, with subjects who were from the Guangxi manganese-exposed workers healthy cohort (GXMEWHC). Based on the Mn manganese cumulative exposure index (Mn-CEI), all subjects were divided into the low exposure group (n = 682) and the high exposure group (n = 976). A pulmonary function test was performed using an electronic spirometer, including the values and percentages of FVC, FEV1, FEV1/FVC, MMEF, PEFR, MVV, respectively. Results No significant effect of Mn dust exposure on the pulmonary function was found in the female workers (all p>0.05). However, there was an obvious decrease in the male workers in the high exposure group compared with those in the low exposure group (FVC -60 ml, FEV1 -120 ml, MMEF -260 ml/s, MVV -5.06 L, all p<0.05). In the high exposure group, the reduction in FVC% predicted, MMEF and MMEF% predicted was 1.0%, 210 mL/s, and 4.9%, respectively. In particular, among the exposed subjects smokers had a statistically significant decrease in lung function compared with non-smokers and the reduction in FVC% predicted, MMEF and MMEF% predicted was 1.0%, 210 mL/s, and 4.9%, respectively (p<0.05). Partial correlation analysis showed that there was also negative correlation between Mn-CEI and decreased changes in MMEF (r = -0.159, p = 0.018) and also MMEF% predicted (r = -0.163, p = 0.015). Conclusions Mn dust can impair the pulmonary ventilation function of male workers but not females, and individual smoking habits and manganese exposure had a synergistic effect on the lung function decrease.
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Affiliation(s)
- Fenfen Wang
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yuefei Shen
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yaoqiu Zhong
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yingnan Lv
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Damin Huang
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Kangcheng Chen
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Qin Li
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Li Qing
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Bing Xia
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Cheng Su
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Shuyan Ma
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiaobo Yang
- Department of occupational health and environmental health, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, China
- * E-mail:
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Ross CL, Galloway-Phillipps N, Armstrong PC, Mitchell JA, Warner TD, Brearley C, Ito M, Tunstall T, Elkin S, Kon OM, Hansel TT, Paul-Clark MJ. Protocol for a human in vivo model of acute cigarette smoke inhalation challenge in smokers with COPD: monitoring the nasal and systemic immune response using a network biology approach. BMJ Open 2015; 5:e005750. [PMID: 25631307 PMCID: PMC4316420 DOI: 10.1136/bmjopen-2014-005750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Cigarette smoke contributes to a diverse range of diseases including chronic obstructive pulmonary disease (COPD), cardiovascular disorders and many cancers. There currently is a need for human challenge models, to assess the acute effects of a controlled cigarette smoke stimulus, followed by serial sampling of blood and respiratory tissue for advanced molecular profiling. We employ precision sampling of nasal mucosal lining fluid by absorption to permit soluble mediators measurement in eluates. Serial nasal curettage was used for transcriptomic analysis of mucosal tissue. METHODS AND ANALYSIS Three groups of strictly defined patients will be studied: 12 smokers with COPD (GOLD Stage 2) with emphysema, 12 matched smokers with normal lung function and no evidence of emphysema, and 12 matched never smokers with normal spirometry. Patients in the smoking groups are current smokers, and will be given full support to stop smoking immediately after this study. In giving a controlled cigarette smoke stimulus, all patients will have abstained from smoking for 12 h, and will smoke two cigarettes with expiration through the nose in a ventilated chamber. Before and after inhalation of cigarette smoke, a series of samples will be taken from the blood, nasal mucosal lining fluid and nasal tissue by curettage. Analysis of plasma nicotine and metabolites in relation to levels of soluble inflammatory mediators in nasal lining fluid and blood, as well as assessing nasal transcriptomics, ex vivo blood platelet aggregation and leucocyte responses to toll-like receptor agonists will be undertaken. IMPLICATIONS Development of acute cigarette smoke challenge models has promise for the study of molecular effects of smoking in a range of pathological processes. ETHICS AND DISSEMINATION This study was approved by the West London National Research Ethics Committee (12/LO/1101). The study findings will be presented at conferences and will be reported in peer-reviewed journals.
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Affiliation(s)
- Clare L Ross
- Imperial Clinical Respiratory Research Unit (ICRRU) and Biomedical Research Centre (BMRC), Centre for Respiratory Infection (CRI), St Mary's Hospital, Imperial College, London, UK
| | | | - Paul C Armstrong
- William Harvey Research Institute, Barts and The London, Queen Mary's School of Medicine and Dentistry, London, UK
| | - Jane A Mitchell
- National Heart and Lung Institute, Imperial College, London, UK
| | - Timothy D Warner
- William Harvey Research Institute, Barts and The London, Queen Mary's School of Medicine and Dentistry, London, UK
| | | | - Mari Ito
- Dainippon Sumitomo Pharma Co Ltd, Osaka, Japan
- Department of Molecular Regulation for intractable Diseases, Institute of Medical Science, Tokyo Medical University, Tokyo, Japan
| | - Tanushree Tunstall
- Imperial Clinical Respiratory Research Unit (ICRRU) and Biomedical Research Centre (BMRC), Centre for Respiratory Infection (CRI), St Mary's Hospital, Imperial College, London, UK
| | - Sarah Elkin
- Imperial Clinical Respiratory Research Unit (ICRRU) and Biomedical Research Centre (BMRC), Centre for Respiratory Infection (CRI), St Mary's Hospital, Imperial College, London, UK
| | - Onn Min Kon
- Imperial Clinical Respiratory Research Unit (ICRRU) and Biomedical Research Centre (BMRC), Centre for Respiratory Infection (CRI), St Mary's Hospital, Imperial College, London, UK
| | - Trevor T Hansel
- Imperial Clinical Respiratory Research Unit (ICRRU) and Biomedical Research Centre (BMRC), Centre for Respiratory Infection (CRI), St Mary's Hospital, Imperial College, London, UK
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Talikka M, Kostadinova R, Xiang Y, Mathis C, Sewer A, Majeed S, Kuehn D, Frentzel S, Merg C, Geertz M, Martin F, Ivanov NV, Peitsch MC, Hoeng J. The response of human nasal and bronchial organotypic tissue cultures to repeated whole cigarette smoke exposure. Int J Toxicol 2014; 33:506-17. [PMID: 25297719 DOI: 10.1177/1091581814551647] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Exposure to cigarette smoke (CS) is linked to the development of respiratory diseases, and there is a need to understand the mechanisms whereby CS causes damage. Although animal models have provided valuable insights into smoking-related respiratory tract damage, modern toxicity testing calls for reliable in vitro models as alternatives for animal experimentation. We report on a repeated whole mainstream CS exposure of nasal and bronchial organotypic tissue cultures that mimic the morphological, physiological, and molecular attributes of the human respiratory tract. Despite the similar cellular staining and cytokine secretion in both tissue types, the transcriptomic analyses in the context of biological network models identified similar and diverse biological processes that were impacted by CS-exposed nasal and bronchial cultures. Our results demonstrate that nasal and bronchial tissue cultures are appropriate in vitro models for the assessment of CS-induced adverse effects in the respiratory system and promising alternative to animal experimentation.
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Affiliation(s)
- Marja Talikka
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Radina Kostadinova
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Yang Xiang
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Carole Mathis
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Alain Sewer
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Shoaib Majeed
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Diana Kuehn
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Stefan Frentzel
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Celine Merg
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Marcel Geertz
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Florian Martin
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Nikolai V Ivanov
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Manuel C Peitsch
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
| | - Julia Hoeng
- Philip Morris International R&D, Philip Morris Products S.A., Neuchâtel, Switzerland
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Brant TCS, Yoshida CT, Carvalho TDS, Nicola ML, Martins JA, Braga LM, Oliveira RCD, Leyton V, André CSD, Saldiva PHN, Rubin BK, Nakagawa NK. Mucociliary clearance, airway inflammation and nasal symptoms in urban motorcyclists. Clinics (Sao Paulo) 2014; 69:867-70. [PMID: 25628001 PMCID: PMC4286667 DOI: 10.6061/clinics/2014(12)13] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 11/11/2014] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES There is evidence that outdoor workers exposed to high levels of air pollution exhibit airway inflammation and increased airway symptoms. We hypothesized that these workers would experience increased airway symptoms and decreased nasal mucociliary clearance associated with their exposure to air pollution. METHODS In total, 25 non-smoking commercial motorcyclists, aged 18-44 years, were included in this study. These drivers work 8-12 hours per day, 5 days per week, driving on urban streets. Nasal mucociliary clearance was measured by the saccharine transit test; airway acidification was measured by assessing the pH of exhaled breath condensate; and airway symptoms were measured by the Sino-nasal Outcome Test-20 questionnaire. To assess personal air pollution exposure, the subjects used a passive-diffusion nitrogen dioxide (NO2) concentration-monitoring system during the 14 days before each assessment. The associations between NO2 and the airway outcomes were analyzed using the Mann-Whitney test and the Chi-Square test. Clinicaltrials.gov: NCT01976039. RESULTS Compared with clearance in healthy adult males, mucociliary clearance was decreased in 32% of the motorcyclists. Additionally, 64% of the motorcyclists had airway acidification and 92% experienced airway symptoms. The median personal NO2 exposure level was 75 mg/m3 for these subjects and a significant association was observed between NO2 and impaired mucociliary clearance (p=0.036). CONCLUSION Non-smoking commercial motorcyclists exhibit increased airway symptoms and airway acidification as well as decreased nasal mucociliary clearance, all of which are significantly associated with the amount of exposure to air pollution.
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Affiliation(s)
- Tereza C S Brant
- Department of Pathology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Carolina T Yoshida
- Department of Physiotherapy, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Tomas de S Carvalho
- Department of Physiotherapy, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Marina L Nicola
- Department of Physiotherapy, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Jocimar A Martins
- Physical Therapy Department, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lays M Braga
- Department of Physiotherapy, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Regiani C de Oliveira
- Department of Pathology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Vilma Leyton
- Department of Legal Medicine, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Carmen S de André
- Institute of Mathematics and Statistics, University of São Paulo, São Paulo, SP, Brazil
| | - Paulo H N Saldiva
- Department of Pathology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Bruce K Rubin
- Department of Pediatrics, Virginia Commonwealth University School of Medicine, Richmond, Virginia, USA
| | - Naomi K Nakagawa
- Department of Pathology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
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